Index: frontend/node_modules/eslint/LICENSE
===================================================================
--- frontend/node_modules/eslint/LICENSE	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/LICENSE	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,19 @@
+Copyright OpenJS Foundation and other contributors, <www.openjsf.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
Index: frontend/node_modules/eslint/README.md
===================================================================
--- frontend/node_modules/eslint/README.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/README.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,304 @@
+[![npm version](https://img.shields.io/npm/v/eslint.svg)](https://www.npmjs.com/package/eslint)
+[![Downloads](https://img.shields.io/npm/dm/eslint.svg)](https://www.npmjs.com/package/eslint)
+[![Build Status](https://github.com/eslint/eslint/workflows/CI/badge.svg)](https://github.com/eslint/eslint/actions)
+[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Feslint%2Feslint.svg?type=shield)](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Feslint%2Feslint?ref=badge_shield)
+<br />
+[![Open Collective Backers](https://img.shields.io/opencollective/backers/eslint)](https://opencollective.com/eslint)
+[![Open Collective Sponsors](https://img.shields.io/opencollective/sponsors/eslint)](https://opencollective.com/eslint)
+[![Follow us on Twitter](https://img.shields.io/twitter/follow/geteslint?label=Follow&style=social)](https://twitter.com/intent/user?screen_name=geteslint)
+
+# ESLint
+
+[Website](https://eslint.org) |
+[Configure ESLint](https://eslint.org/docs/latest/use/configure) |
+[Rules](https://eslint.org/docs/rules/) |
+[Contribute to ESLint](https://eslint.org/docs/latest/contribute) |
+[Report Bugs](https://eslint.org/docs/latest/contribute/report-bugs) |
+[Code of Conduct](https://eslint.org/conduct) |
+[Twitter](https://twitter.com/geteslint) |
+[Discord](https://eslint.org/chat) |
+[Mastodon](https://fosstodon.org/@eslint)
+
+ESLint is a tool for identifying and reporting on patterns found in ECMAScript/JavaScript code. In many ways, it is similar to JSLint and JSHint with a few exceptions:
+
+* ESLint uses [Espree](https://github.com/eslint/espree) for JavaScript parsing.
+* ESLint uses an AST to evaluate patterns in code.
+* ESLint is completely pluggable, every single rule is a plugin and you can add more at runtime.
+
+## Table of Contents
+
+1. [Installation and Usage](#installation-and-usage)
+2. [Configuration](#configuration)
+3. [Code of Conduct](#code-of-conduct)
+4. [Filing Issues](#filing-issues)
+5. [Frequently Asked Questions](#frequently-asked-questions)
+6. [Releases](#releases)
+7. [Security Policy](#security-policy)
+8. [Semantic Versioning Policy](#semantic-versioning-policy)
+9. [Stylistic Rule Updates](#stylistic-rule-updates)
+10. [License](#license)
+11. [Team](#team)
+12. [Sponsors](#sponsors)
+13. [Technology Sponsors](#technology-sponsors)
+
+## Installation and Usage
+
+Prerequisites: [Node.js](https://nodejs.org/) (`^12.22.0`, `^14.17.0`, or `>=16.0.0`) built with SSL support. (If you are using an official Node.js distribution, SSL is always built in.)
+
+You can install and configure ESLint using this command:
+
+```shell
+npm init @eslint/config
+```
+
+After that, you can run ESLint on any file or directory like this:
+
+```shell
+./node_modules/.bin/eslint yourfile.js
+```
+
+## Configuration
+
+After running `npm init @eslint/config`, you'll have an `.eslintrc` file in your directory. In it, you'll see some rules configured like this:
+
+```json
+{
+    "rules": {
+        "semi": ["error", "always"],
+        "quotes": ["error", "double"]
+    }
+}
+```
+
+The names `"semi"` and `"quotes"` are the names of [rules](https://eslint.org/docs/rules) in ESLint. The first value is the error level of the rule and can be one of these values:
+
+* `"off"` or `0` - turn the rule off
+* `"warn"` or `1` - turn the rule on as a warning (doesn't affect exit code)
+* `"error"` or `2` - turn the rule on as an error (exit code will be 1)
+
+The three error levels allow you fine-grained control over how ESLint applies rules (for more configuration options and details, see the [configuration docs](https://eslint.org/docs/latest/use/configure)).
+
+## Code of Conduct
+
+ESLint adheres to the [JS Foundation Code of Conduct](https://eslint.org/conduct).
+
+## Filing Issues
+
+Before filing an issue, please be sure to read the guidelines for what you're reporting:
+
+* [Bug Report](https://eslint.org/docs/latest/contribute/report-bugs)
+* [Propose a New Rule](https://eslint.org/docs/latest/contribute/propose-new-rule)
+* [Proposing a Rule Change](https://eslint.org/docs/latest/contribute/propose-rule-change)
+* [Request a Change](https://eslint.org/docs/latest/contribute/request-change)
+
+## Frequently Asked Questions
+
+### I'm using JSCS, should I migrate to ESLint?
+
+Yes. [JSCS has reached end of life](https://eslint.org/blog/2016/07/jscs-end-of-life) and is no longer supported.
+
+We have prepared a [migration guide](https://eslint.org/docs/latest/use/migrating-from-jscs) to help you convert your JSCS settings to an ESLint configuration.
+
+We are now at or near 100% compatibility with JSCS. If you try ESLint and believe we are not yet compatible with a JSCS rule/configuration, please create an issue (mentioning that it is a JSCS compatibility issue) and we will evaluate it as per our normal process.
+
+### Does Prettier replace ESLint?
+
+No, ESLint and Prettier have diffent jobs: ESLint is a linter (looking for problematic patterns) and Prettier is a code formatter. Using both tools is common, refer to [Prettier's documentation](https://prettier.io/docs/en/install#eslint-and-other-linters) to learn how to configure them to work well with each other.
+
+### Why can't ESLint find my plugins?
+
+* Make sure your plugins (and ESLint) are both in your project's `package.json` as devDependencies (or dependencies, if your project uses ESLint at runtime).
+* Make sure you have run `npm install` and all your dependencies are installed.
+* Make sure your plugins' peerDependencies have been installed as well. You can use `npm view eslint-plugin-myplugin peerDependencies` to see what peer dependencies `eslint-plugin-myplugin` has.
+
+### Does ESLint support JSX?
+
+Yes, ESLint natively supports parsing JSX syntax (this must be enabled in [configuration](https://eslint.org/docs/latest/use/configure)). Please note that supporting JSX syntax *is not* the same as supporting React. React applies specific semantics to JSX syntax that ESLint doesn't recognize. We recommend using [eslint-plugin-react](https://www.npmjs.com/package/eslint-plugin-react) if you are using React and want React semantics.
+
+### What ECMAScript versions does ESLint support?
+
+ESLint has full support for ECMAScript 3, 5 (default), 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, and 2023. You can set your desired ECMAScript syntax (and other settings, like global variables or your target environments) through [configuration](https://eslint.org/docs/latest/use/configure).
+
+### What about experimental features?
+
+ESLint's parser only officially supports the latest final ECMAScript standard. We will make changes to core rules in order to avoid crashes on stage 3 ECMAScript syntax proposals (as long as they are implemented using the correct experimental ESTree syntax). We may make changes to core rules to better work with language extensions (such as JSX, Flow, and TypeScript) on a case-by-case basis.
+
+In other cases (including if rules need to warn on more or fewer cases due to new syntax, rather than just not crashing), we recommend you use other parsers and/or rule plugins. If you are using Babel, you can use [@babel/eslint-parser](https://www.npmjs.com/package/@babel/eslint-parser) and [@babel/eslint-plugin](https://www.npmjs.com/package/@babel/eslint-plugin) to use any option available in Babel.
+
+Once a language feature has been adopted into the ECMAScript standard (stage 4 according to the [TC39 process](https://tc39.github.io/process-document/)), we will accept issues and pull requests related to the new feature, subject to our [contributing guidelines](https://eslint.org/docs/latest/contribute). Until then, please use the appropriate parser and plugin(s) for your experimental feature.
+
+### Where to ask for help?
+
+Open a [discussion](https://github.com/eslint/eslint/discussions) or stop by our [Discord server](https://eslint.org/chat).
+
+### Why doesn't ESLint lock dependency versions?
+
+Lock files like `package-lock.json` are helpful for deployed applications. They ensure that dependencies are consistent between environments and across deployments.
+
+Packages like `eslint` that get published to the npm registry do not include lock files. `npm install eslint` as a user will respect version constraints in ESLint's `package.json`. ESLint and its dependencies will be included in the user's lock file if one exists, but ESLint's own lock file would not be used.
+
+We intentionally don't lock dependency versions so that we have the latest compatible dependency versions in development and CI that our users get when installing ESLint in a project.
+
+The Twilio blog has a [deeper dive](https://www.twilio.com/blog/lockfiles-nodejs) to learn more.
+
+## Releases
+
+We have scheduled releases every two weeks on Friday or Saturday. You can follow a [release issue](https://github.com/eslint/eslint/issues?q=is%3Aopen+is%3Aissue+label%3Arelease) for updates about the scheduling of any particular release.
+
+## Security Policy
+
+ESLint takes security seriously. We work hard to ensure that ESLint is safe for everyone and that security issues are addressed quickly and responsibly. Read the full [security policy](https://github.com/eslint/.github/blob/master/SECURITY.md).
+
+## Semantic Versioning Policy
+
+ESLint follows [semantic versioning](https://semver.org). However, due to the nature of ESLint as a code quality tool, it's not always clear when a minor or major version bump occurs. To help clarify this for everyone, we've defined the following semantic versioning policy for ESLint:
+
+* Patch release (intended to not break your lint build)
+    * A bug fix in a rule that results in ESLint reporting fewer linting errors.
+    * A bug fix to the CLI or core (including formatters).
+    * Improvements to documentation.
+    * Non-user-facing changes such as refactoring code, adding, deleting, or modifying tests, and increasing test coverage.
+    * Re-releasing after a failed release (i.e., publishing a release that doesn't work for anyone).
+* Minor release (might break your lint build)
+    * A bug fix in a rule that results in ESLint reporting more linting errors.
+    * A new rule is created.
+    * A new option to an existing rule that does not result in ESLint reporting more linting errors by default.
+    * A new addition to an existing rule to support a newly-added language feature (within the last 12 months) that will result in ESLint reporting more linting errors by default.
+    * An existing rule is deprecated.
+    * A new CLI capability is created.
+    * New capabilities to the public API are added (new classes, new methods, new arguments to existing methods, etc.).
+    * A new formatter is created.
+    * `eslint:recommended` is updated and will result in strictly fewer linting errors (e.g., rule removals).
+* Major release (likely to break your lint build)
+    * `eslint:recommended` is updated and may result in new linting errors (e.g., rule additions, most rule option updates).
+    * A new option to an existing rule that results in ESLint reporting more linting errors by default.
+    * An existing formatter is removed.
+    * Part of the public API is removed or changed in an incompatible way. The public API includes:
+        * Rule schemas
+        * Configuration schema
+        * Command-line options
+        * Node.js API
+        * Rule, formatter, parser, plugin APIs
+
+According to our policy, any minor update may report more linting errors than the previous release (ex: from a bug fix). As such, we recommend using the tilde (`~`) in `package.json` e.g. `"eslint": "~3.1.0"` to guarantee the results of your builds.
+
+## Stylistic Rule Updates
+
+Stylistic rules are frozen according to [our policy](https://eslint.org/blog/2020/05/changes-to-rules-policies) on how we evaluate new rules and rule changes.
+This means:
+
+* **Bug fixes**: We will still fix bugs in stylistic rules.
+* **New ECMAScript features**: We will also make sure stylistic rules are compatible with new ECMAScript features.
+* **New options**: We will **not** add any new options to stylistic rules unless an option is the only way to fix a bug or support a newly-added ECMAScript feature.
+
+## License
+
+[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Feslint%2Feslint.svg?type=large)](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Feslint%2Feslint?ref=badge_large)
+
+## Team
+
+These folks keep the project moving and are resources for help.
+
+<!-- NOTE: This section is autogenerated. Do not manually edit.-->
+
+<!--teamstart-->
+
+### Technical Steering Committee (TSC)
+
+The people who manage releases, review feature requests, and meet regularly to ensure ESLint is properly maintained.
+
+<table><tbody><tr><td align="center" valign="top" width="11%">
+<a href="https://github.com/nzakas">
+<img src="https://github.com/nzakas.png?s=75" width="75" height="75" alt="Nicholas C. Zakas's Avatar"><br />
+Nicholas C. Zakas
+</a>
+</td><td align="center" valign="top" width="11%">
+<a href="https://github.com/mdjermanovic">
+<img src="https://github.com/mdjermanovic.png?s=75" width="75" height="75" alt="Milos Djermanovic's Avatar"><br />
+Milos Djermanovic
+</a>
+</td></tr></tbody></table>
+
+### Reviewers
+
+The people who review and implement new features.
+
+<table><tbody><tr><td align="center" valign="top" width="11%">
+<a href="https://github.com/aladdin-add">
+<img src="https://github.com/aladdin-add.png?s=75" width="75" height="75" alt="唯然's Avatar"><br />
+唯然
+</a>
+</td><td align="center" valign="top" width="11%">
+<a href="https://github.com/snitin315">
+<img src="https://github.com/snitin315.png?s=75" width="75" height="75" alt="Nitin Kumar's Avatar"><br />
+Nitin Kumar
+</a>
+</td></tr></tbody></table>
+
+### Committers
+
+The people who review and fix bugs and help triage issues.
+
+<table><tbody><tr><td align="center" valign="top" width="11%">
+<a href="https://github.com/bmish">
+<img src="https://github.com/bmish.png?s=75" width="75" height="75" alt="Bryan Mishkin's Avatar"><br />
+Bryan Mishkin
+</a>
+</td><td align="center" valign="top" width="11%">
+<a href="https://github.com/fasttime">
+<img src="https://github.com/fasttime.png?s=75" width="75" height="75" alt="Francesco Trotta's Avatar"><br />
+Francesco Trotta
+</a>
+</td><td align="center" valign="top" width="11%">
+<a href="https://github.com/ota-meshi">
+<img src="https://github.com/ota-meshi.png?s=75" width="75" height="75" alt="Yosuke Ota's Avatar"><br />
+Yosuke Ota
+</a>
+</td><td align="center" valign="top" width="11%">
+<a href="https://github.com/Tanujkanti4441">
+<img src="https://github.com/Tanujkanti4441.png?s=75" width="75" height="75" alt="Tanuj Kanti's Avatar"><br />
+Tanuj Kanti
+</a>
+</td></tr></tbody></table>
+
+### Website Team
+
+Team members who focus specifically on eslint.org
+
+<table><tbody><tr><td align="center" valign="top" width="11%">
+<a href="https://github.com/amareshsm">
+<img src="https://github.com/amareshsm.png?s=75" width="75" height="75" alt="Amaresh  S M's Avatar"><br />
+Amaresh  S M
+</a>
+</td><td align="center" valign="top" width="11%">
+<a href="https://github.com/harish-sethuraman">
+<img src="https://github.com/harish-sethuraman.png?s=75" width="75" height="75" alt="Strek's Avatar"><br />
+Strek
+</a>
+</td><td align="center" valign="top" width="11%">
+<a href="https://github.com/kecrily">
+<img src="https://github.com/kecrily.png?s=75" width="75" height="75" alt="Percy Ma's Avatar"><br />
+Percy Ma
+</a>
+</td></tr></tbody></table>
+
+<!--teamend-->
+
+## Sponsors
+
+The following companies, organizations, and individuals support ESLint's ongoing maintenance and development. [Become a Sponsor](https://opencollective.com/eslint) to get your logo on our README and website.
+
+<!-- NOTE: This section is autogenerated. Do not manually edit.-->
+<!--sponsorsstart-->
+<h3>Platinum Sponsors</h3>
+<p><a href="#"><img src="https://images.opencollective.com/2021-frameworks-fund/logo.png" alt="Chrome Frameworks Fund" height="undefined"></a> <a href="https://automattic.com"><img src="https://images.opencollective.com/automattic/d0ef3e1/logo.png" alt="Automattic" height="undefined"></a></p><h3>Gold Sponsors</h3>
+<p><a href="https://engineering.salesforce.com"><img src="https://images.opencollective.com/salesforce/ca8f997/logo.png" alt="Salesforce" height="96"></a> <a href="https://www.airbnb.com/"><img src="https://images.opencollective.com/airbnb/d327d66/logo.png" alt="Airbnb" height="96"></a></p><h3>Silver Sponsors</h3>
+<p><a href="https://liftoff.io/"><img src="https://images.opencollective.com/liftoff/5c4fa84/logo.png" alt="Liftoff" height="64"></a> <a href="https://americanexpress.io"><img src="https://avatars.githubusercontent.com/u/3853301?v=4" alt="American Express" height="64"></a> <a href="https://www.workleap.com"><img src="https://avatars.githubusercontent.com/u/53535748?u=d1e55d7661d724bf2281c1bfd33cb8f99fe2465f&v=4" alt="Workleap" height="64"></a></p><h3>Bronze Sponsors</h3>
+<p><a href="https://themeisle.com"><img src="https://images.opencollective.com/themeisle/d5592fe/logo.png" alt="ThemeIsle" height="32"></a> <a href="https://www.crosswordsolver.org/anagram-solver/"><img src="https://images.opencollective.com/anagram-solver/2666271/logo.png" alt="Anagram Solver" height="32"></a> <a href="https://icons8.com/"><img src="https://images.opencollective.com/icons8/7fa1641/logo.png" alt="Icons8" height="32"></a> <a href="https://discord.com"><img src="https://images.opencollective.com/discordapp/f9645d9/logo.png" alt="Discord" height="32"></a> <a href="https://transloadit.com/"><img src="https://avatars.githubusercontent.com/u/125754?v=4" alt="Transloadit" height="32"></a> <a href="https://www.ignitionapp.com"><img src="https://avatars.githubusercontent.com/u/5753491?v=4" alt="Ignition" height="32"></a> <a href="https://nx.dev"><img src="https://avatars.githubusercontent.com/u/23692104?v=4" alt="Nx" height="32"></a> <a href="https://herocoders.com"><img src="https://avatars.githubusercontent.com/u/37549774?v=4" alt="HeroCoders" height="32"></a></p>
+<!--sponsorsend-->
+
+## Technology Sponsors
+
+* Site search ([eslint.org](https://eslint.org)) is sponsored by [Algolia](https://www.algolia.com)
+* Hosting for ([eslint.org](https://eslint.org)) is sponsored by [Netlify](https://www.netlify.com)
+* Password management is sponsored by [1Password](https://www.1password.com)
Index: frontend/node_modules/eslint/bin/eslint.js
===================================================================
--- frontend/node_modules/eslint/bin/eslint.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/bin/eslint.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,173 @@
+#!/usr/bin/env node
+
+/**
+ * @fileoverview Main CLI that is run via the eslint command.
+ * @author Nicholas C. Zakas
+ */
+
+/* eslint no-console:off -- CLI */
+
+"use strict";
+
+// must do this initialization *before* other requires in order to work
+if (process.argv.includes("--debug")) {
+    require("debug").enable("eslint:*,-eslint:code-path,eslintrc:*");
+}
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Read data from stdin til the end.
+ *
+ * Note: See
+ * - https://github.com/nodejs/node/blob/master/doc/api/process.md#processstdin
+ * - https://github.com/nodejs/node/blob/master/doc/api/process.md#a-note-on-process-io
+ * - https://lists.gnu.org/archive/html/bug-gnu-emacs/2016-01/msg00419.html
+ * - https://github.com/nodejs/node/issues/7439 (historical)
+ *
+ * On Windows using `fs.readFileSync(STDIN_FILE_DESCRIPTOR, "utf8")` seems
+ * to read 4096 bytes before blocking and never drains to read further data.
+ *
+ * The investigation on the Emacs thread indicates:
+ *
+ * > Emacs on MS-Windows uses pipes to communicate with subprocesses; a
+ * > pipe on Windows has a 4K buffer. So as soon as Emacs writes more than
+ * > 4096 bytes to the pipe, the pipe becomes full, and Emacs then waits for
+ * > the subprocess to read its end of the pipe, at which time Emacs will
+ * > write the rest of the stuff.
+ * @returns {Promise<string>} The read text.
+ */
+function readStdin() {
+    return new Promise((resolve, reject) => {
+        let content = "";
+        let chunk = "";
+
+        process.stdin
+            .setEncoding("utf8")
+            .on("readable", () => {
+                while ((chunk = process.stdin.read()) !== null) {
+                    content += chunk;
+                }
+            })
+            .on("end", () => resolve(content))
+            .on("error", reject);
+    });
+}
+
+/**
+ * Get the error message of a given value.
+ * @param {any} error The value to get.
+ * @returns {string} The error message.
+ */
+function getErrorMessage(error) {
+
+    // Lazy loading because this is used only if an error happened.
+    const util = require("util");
+
+    // Foolproof -- third-party module might throw non-object.
+    if (typeof error !== "object" || error === null) {
+        return String(error);
+    }
+
+    // Use templates if `error.messageTemplate` is present.
+    if (typeof error.messageTemplate === "string") {
+        try {
+            const template = require(`../messages/${error.messageTemplate}.js`);
+
+            return template(error.messageData || {});
+        } catch {
+
+            // Ignore template error then fallback to use `error.stack`.
+        }
+    }
+
+    // Use the stacktrace if it's an error object.
+    if (typeof error.stack === "string") {
+        return error.stack;
+    }
+
+    // Otherwise, dump the object.
+    return util.format("%o", error);
+}
+
+/**
+ * Tracks error messages that are shown to the user so we only ever show the
+ * same message once.
+ * @type {Set<string>}
+ */
+const displayedErrors = new Set();
+
+/**
+ * Tracks whether an unexpected error was caught
+ * @type {boolean}
+ */
+let hadFatalError = false;
+
+/**
+ * Catch and report unexpected error.
+ * @param {any} error The thrown error object.
+ * @returns {void}
+ */
+function onFatalError(error) {
+    process.exitCode = 2;
+    hadFatalError = true;
+
+    const { version } = require("../package.json");
+    const message = `
+Oops! Something went wrong! :(
+
+ESLint: ${version}
+
+${getErrorMessage(error)}`;
+
+    if (!displayedErrors.has(message)) {
+        console.error(message);
+        displayedErrors.add(message);
+    }
+}
+
+//------------------------------------------------------------------------------
+// Execution
+//------------------------------------------------------------------------------
+
+(async function main() {
+    process.on("uncaughtException", onFatalError);
+    process.on("unhandledRejection", onFatalError);
+
+    // Call the config initializer if `--init` is present.
+    if (process.argv.includes("--init")) {
+
+        // `eslint --init` has been moved to `@eslint/create-config`
+        console.warn("You can also run this command directly using 'npm init @eslint/config'.");
+
+        const spawn = require("cross-spawn");
+
+        spawn.sync("npm", ["init", "@eslint/config"], { encoding: "utf8", stdio: "inherit" });
+        return;
+    }
+
+    // Otherwise, call the CLI.
+    const exitCode = await require("../lib/cli").execute(
+        process.argv,
+        process.argv.includes("--stdin") ? await readStdin() : null,
+        true
+    );
+
+    /*
+     * If an uncaught exception or unhandled rejection was detected in the meantime,
+     * keep the fatal exit code 2 that is already assigned to `process.exitCode`.
+     * Without this condition, exit code 2 (unsuccessful execution) could be overwritten with
+     * 1 (successful execution, lint problems found) or even 0 (successful execution, no lint problems found).
+     * This ensures that unexpected errors that seemingly don't affect the success
+     * of the execution will still cause a non-zero exit code, as it's a common
+     * practice and the default behavior of Node.js to exit with non-zero
+     * in case of an uncaught exception or unhandled rejection.
+     *
+     * Otherwise, assign the exit code returned from CLI.
+     */
+    if (!hadFatalError) {
+        process.exitCode = exitCode;
+    }
+}()).catch(onFatalError);
Index: frontend/node_modules/eslint/conf/config-schema.js
===================================================================
--- frontend/node_modules/eslint/conf/config-schema.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/conf/config-schema.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,93 @@
+/*
+ * STOP!!! DO NOT MODIFY.
+ *
+ * This file is part of the ongoing work to move the eslintrc-style config
+ * system into the @eslint/eslintrc package. This file needs to remain
+ * unchanged in order for this work to proceed.
+ *
+ * If you think you need to change this file, please contact @nzakas first.
+ *
+ * Thanks in advance for your cooperation.
+ */
+
+/**
+ * @fileoverview Defines a schema for configs.
+ * @author Sylvan Mably
+ */
+
+"use strict";
+
+const baseConfigProperties = {
+    $schema: { type: "string" },
+    env: { type: "object" },
+    extends: { $ref: "#/definitions/stringOrStrings" },
+    globals: { type: "object" },
+    overrides: {
+        type: "array",
+        items: { $ref: "#/definitions/overrideConfig" },
+        additionalItems: false
+    },
+    parser: { type: ["string", "null"] },
+    parserOptions: { type: "object" },
+    plugins: { type: "array" },
+    processor: { type: "string" },
+    rules: { type: "object" },
+    settings: { type: "object" },
+    noInlineConfig: { type: "boolean" },
+    reportUnusedDisableDirectives: { type: "boolean" },
+
+    ecmaFeatures: { type: "object" } // deprecated; logs a warning when used
+};
+
+const configSchema = {
+    definitions: {
+        stringOrStrings: {
+            oneOf: [
+                { type: "string" },
+                {
+                    type: "array",
+                    items: { type: "string" },
+                    additionalItems: false
+                }
+            ]
+        },
+        stringOrStringsRequired: {
+            oneOf: [
+                { type: "string" },
+                {
+                    type: "array",
+                    items: { type: "string" },
+                    additionalItems: false,
+                    minItems: 1
+                }
+            ]
+        },
+
+        // Config at top-level.
+        objectConfig: {
+            type: "object",
+            properties: {
+                root: { type: "boolean" },
+                ignorePatterns: { $ref: "#/definitions/stringOrStrings" },
+                ...baseConfigProperties
+            },
+            additionalProperties: false
+        },
+
+        // Config in `overrides`.
+        overrideConfig: {
+            type: "object",
+            properties: {
+                excludedFiles: { $ref: "#/definitions/stringOrStrings" },
+                files: { $ref: "#/definitions/stringOrStringsRequired" },
+                ...baseConfigProperties
+            },
+            required: ["files"],
+            additionalProperties: false
+        }
+    },
+
+    $ref: "#/definitions/objectConfig"
+};
+
+module.exports = configSchema;
Index: frontend/node_modules/eslint/conf/default-cli-options.js
===================================================================
--- frontend/node_modules/eslint/conf/default-cli-options.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/conf/default-cli-options.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,32 @@
+/**
+ * @fileoverview Default CLIEngineOptions.
+ * @author Ian VanSchooten
+ */
+
+"use strict";
+
+module.exports = {
+    configFile: null,
+    baseConfig: false,
+    rulePaths: [],
+    useEslintrc: true,
+    envs: [],
+    globals: [],
+    extensions: null,
+    ignore: true,
+    ignorePath: void 0,
+    cache: false,
+
+    /*
+     * in order to honor the cacheFile option if specified
+     * this option should not have a default value otherwise
+     * it will always be used
+     */
+    cacheLocation: "",
+    cacheFile: ".eslintcache",
+    cacheStrategy: "metadata",
+    fix: false,
+    allowInlineConfig: true,
+    reportUnusedDisableDirectives: void 0,
+    globInputPaths: true
+};
Index: frontend/node_modules/eslint/conf/globals.js
===================================================================
--- frontend/node_modules/eslint/conf/globals.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/conf/globals.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,154 @@
+/**
+ * @fileoverview Globals for ecmaVersion/sourceType
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//-----------------------------------------------------------------------------
+// Globals
+//-----------------------------------------------------------------------------
+
+const commonjs = {
+    exports: true,
+    global: false,
+    module: false,
+    require: false
+};
+
+const es3 = {
+    Array: false,
+    Boolean: false,
+    constructor: false,
+    Date: false,
+    decodeURI: false,
+    decodeURIComponent: false,
+    encodeURI: false,
+    encodeURIComponent: false,
+    Error: false,
+    escape: false,
+    eval: false,
+    EvalError: false,
+    Function: false,
+    hasOwnProperty: false,
+    Infinity: false,
+    isFinite: false,
+    isNaN: false,
+    isPrototypeOf: false,
+    Math: false,
+    NaN: false,
+    Number: false,
+    Object: false,
+    parseFloat: false,
+    parseInt: false,
+    propertyIsEnumerable: false,
+    RangeError: false,
+    ReferenceError: false,
+    RegExp: false,
+    String: false,
+    SyntaxError: false,
+    toLocaleString: false,
+    toString: false,
+    TypeError: false,
+    undefined: false,
+    unescape: false,
+    URIError: false,
+    valueOf: false
+};
+
+const es5 = {
+    ...es3,
+    JSON: false
+};
+
+const es2015 = {
+    ...es5,
+    ArrayBuffer: false,
+    DataView: false,
+    Float32Array: false,
+    Float64Array: false,
+    Int16Array: false,
+    Int32Array: false,
+    Int8Array: false,
+    Map: false,
+    Promise: false,
+    Proxy: false,
+    Reflect: false,
+    Set: false,
+    Symbol: false,
+    Uint16Array: false,
+    Uint32Array: false,
+    Uint8Array: false,
+    Uint8ClampedArray: false,
+    WeakMap: false,
+    WeakSet: false
+};
+
+// no new globals in ES2016
+const es2016 = {
+    ...es2015
+};
+
+const es2017 = {
+    ...es2016,
+    Atomics: false,
+    SharedArrayBuffer: false
+};
+
+// no new globals in ES2018
+const es2018 = {
+    ...es2017
+};
+
+// no new globals in ES2019
+const es2019 = {
+    ...es2018
+};
+
+const es2020 = {
+    ...es2019,
+    BigInt: false,
+    BigInt64Array: false,
+    BigUint64Array: false,
+    globalThis: false
+};
+
+const es2021 = {
+    ...es2020,
+    AggregateError: false,
+    FinalizationRegistry: false,
+    WeakRef: false
+};
+
+const es2022 = {
+    ...es2021
+};
+
+const es2023 = {
+    ...es2022
+};
+
+const es2024 = {
+    ...es2023
+};
+
+
+//-----------------------------------------------------------------------------
+// Exports
+//-----------------------------------------------------------------------------
+
+module.exports = {
+    commonjs,
+    es3,
+    es5,
+    es2015,
+    es2016,
+    es2017,
+    es2018,
+    es2019,
+    es2020,
+    es2021,
+    es2022,
+    es2023,
+    es2024
+};
Index: frontend/node_modules/eslint/conf/replacements.json
===================================================================
--- frontend/node_modules/eslint/conf/replacements.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/conf/replacements.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,22 @@
+{
+    "rules": {
+        "generator-star": ["generator-star-spacing"],
+        "global-strict": ["strict"],
+        "no-arrow-condition": ["no-confusing-arrow", "no-constant-condition"],
+        "no-comma-dangle": ["comma-dangle"],
+        "no-empty-class": ["no-empty-character-class"],
+        "no-empty-label": ["no-labels"],
+        "no-extra-strict": ["strict"],
+        "no-reserved-keys": ["quote-props"],
+        "no-space-before-semi": ["semi-spacing"],
+        "no-wrap-func": ["no-extra-parens"],
+        "space-after-function-name": ["space-before-function-paren"],
+        "space-after-keywords": ["keyword-spacing"],
+        "space-before-function-parentheses": ["space-before-function-paren"],
+        "space-before-keywords": ["keyword-spacing"],
+        "space-in-brackets": ["object-curly-spacing", "array-bracket-spacing", "computed-property-spacing"],
+        "space-return-throw-case": ["keyword-spacing"],
+        "space-unary-word-ops": ["space-unary-ops"],
+        "spaced-line-comment": ["spaced-comment"]
+    }
+}
Index: frontend/node_modules/eslint/conf/rule-type-list.json
===================================================================
--- frontend/node_modules/eslint/conf/rule-type-list.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/conf/rule-type-list.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,28 @@
+{
+    "types": {
+        "problem": [],
+        "suggestion": [],
+        "layout": []
+    },
+    "deprecated": [],
+    "removed": [
+        { "removed": "generator-star", "replacedBy": ["generator-star-spacing"] },
+        { "removed": "global-strict", "replacedBy": ["strict"] },
+        { "removed": "no-arrow-condition", "replacedBy": ["no-confusing-arrow", "no-constant-condition"] },
+        { "removed": "no-comma-dangle", "replacedBy": ["comma-dangle"] },
+        { "removed": "no-empty-class", "replacedBy": ["no-empty-character-class"] },
+        { "removed": "no-empty-label", "replacedBy": ["no-labels"] },
+        { "removed": "no-extra-strict", "replacedBy": ["strict"] },
+        { "removed": "no-reserved-keys", "replacedBy": ["quote-props"] },
+        { "removed": "no-space-before-semi", "replacedBy": ["semi-spacing"] },
+        { "removed": "no-wrap-func", "replacedBy": ["no-extra-parens"] },
+        { "removed": "space-after-function-name", "replacedBy": ["space-before-function-paren"] },
+        { "removed": "space-after-keywords", "replacedBy": ["keyword-spacing"] },
+        { "removed": "space-before-function-parentheses", "replacedBy": ["space-before-function-paren"] },
+        { "removed": "space-before-keywords", "replacedBy": ["keyword-spacing"] },
+        { "removed": "space-in-brackets", "replacedBy": ["object-curly-spacing", "array-bracket-spacing"] },
+        { "removed": "space-return-throw-case", "replacedBy": ["keyword-spacing"] },
+        { "removed": "space-unary-word-ops", "replacedBy": ["space-unary-ops"] },
+        { "removed": "spaced-line-comment", "replacedBy": ["spaced-comment"] }
+    ]
+}
Index: frontend/node_modules/eslint/lib/api.js
===================================================================
--- frontend/node_modules/eslint/lib/api.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/api.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,54 @@
+/**
+ * @fileoverview Expose out ESLint and CLI to require.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//-----------------------------------------------------------------------------
+// Requirements
+//-----------------------------------------------------------------------------
+
+const { ESLint, FlatESLint } = require("./eslint");
+const { shouldUseFlatConfig } = require("./eslint/flat-eslint");
+const { Linter } = require("./linter");
+const { RuleTester } = require("./rule-tester");
+const { SourceCode } = require("./source-code");
+
+//-----------------------------------------------------------------------------
+// Functions
+//-----------------------------------------------------------------------------
+
+/**
+ * Loads the correct ESLint constructor given the options.
+ * @param {Object} [options] The options object
+ * @param {boolean} [options.useFlatConfig] Whether or not to use a flat config
+ * @param {string} [options.cwd] The current working directory
+ * @returns {Promise<ESLint|LegacyESLint>} The ESLint constructor
+ */
+async function loadESLint({ useFlatConfig, cwd = process.cwd() } = {}) {
+
+    /*
+     * Note: The v9.x version of this function doesn't have a cwd option
+     * because it's not used. It's only used in the v8.x version of this
+     * function.
+     */
+
+    const shouldESLintUseFlatConfig = typeof useFlatConfig === "boolean"
+        ? useFlatConfig
+        : await shouldUseFlatConfig({ cwd });
+
+    return shouldESLintUseFlatConfig ? FlatESLint : ESLint;
+}
+
+//-----------------------------------------------------------------------------
+// Exports
+//-----------------------------------------------------------------------------
+
+module.exports = {
+    Linter,
+    loadESLint,
+    ESLint,
+    RuleTester,
+    SourceCode
+};
Index: frontend/node_modules/eslint/lib/cli-engine/cli-engine.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/cli-engine.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/cli-engine.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,1078 @@
+/**
+ * @fileoverview Main CLI object.
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+/*
+ * The CLI object should *not* call process.exit() directly. It should only return
+ * exit codes. This allows other programs to use the CLI object and still control
+ * when the program exits.
+ */
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const fs = require("fs");
+const path = require("path");
+const defaultOptions = require("../../conf/default-cli-options");
+const pkg = require("../../package.json");
+
+
+const {
+    Legacy: {
+        ConfigOps,
+        naming,
+        CascadingConfigArrayFactory,
+        IgnorePattern,
+        getUsedExtractedConfigs,
+        ModuleResolver
+    }
+} = require("@eslint/eslintrc");
+
+const { FileEnumerator } = require("./file-enumerator");
+
+const { Linter } = require("../linter");
+const builtInRules = require("../rules");
+const loadRules = require("./load-rules");
+const hash = require("./hash");
+const LintResultCache = require("./lint-result-cache");
+
+const debug = require("debug")("eslint:cli-engine");
+const validFixTypes = new Set(["directive", "problem", "suggestion", "layout"]);
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+// For VSCode IntelliSense
+/** @typedef {import("../shared/types").ConfigData} ConfigData */
+/** @typedef {import("../shared/types").DeprecatedRuleInfo} DeprecatedRuleInfo */
+/** @typedef {import("../shared/types").LintMessage} LintMessage */
+/** @typedef {import("../shared/types").SuppressedLintMessage} SuppressedLintMessage */
+/** @typedef {import("../shared/types").ParserOptions} ParserOptions */
+/** @typedef {import("../shared/types").Plugin} Plugin */
+/** @typedef {import("../shared/types").RuleConf} RuleConf */
+/** @typedef {import("../shared/types").Rule} Rule */
+/** @typedef {import("../shared/types").FormatterFunction} FormatterFunction */
+/** @typedef {ReturnType<CascadingConfigArrayFactory.getConfigArrayForFile>} ConfigArray */
+/** @typedef {ReturnType<ConfigArray.extractConfig>} ExtractedConfig */
+
+/**
+ * The options to configure a CLI engine with.
+ * @typedef {Object} CLIEngineOptions
+ * @property {boolean} [allowInlineConfig] Enable or disable inline configuration comments.
+ * @property {ConfigData} [baseConfig] Base config object, extended by all configs used with this CLIEngine instance
+ * @property {boolean} [cache] Enable result caching.
+ * @property {string} [cacheLocation] The cache file to use instead of .eslintcache.
+ * @property {string} [configFile] The configuration file to use.
+ * @property {string} [cwd] The value to use for the current working directory.
+ * @property {string[]} [envs] An array of environments to load.
+ * @property {string[]|null} [extensions] An array of file extensions to check.
+ * @property {boolean|Function} [fix] Execute in autofix mode. If a function, should return a boolean.
+ * @property {string[]} [fixTypes] Array of rule types to apply fixes for.
+ * @property {string[]} [globals] An array of global variables to declare.
+ * @property {boolean} [ignore] False disables use of .eslintignore.
+ * @property {string} [ignorePath] The ignore file to use instead of .eslintignore.
+ * @property {string|string[]} [ignorePattern] One or more glob patterns to ignore.
+ * @property {boolean} [useEslintrc] False disables looking for .eslintrc
+ * @property {string} [parser] The name of the parser to use.
+ * @property {ParserOptions} [parserOptions] An object of parserOption settings to use.
+ * @property {string[]} [plugins] An array of plugins to load.
+ * @property {Record<string,RuleConf>} [rules] An object of rules to use.
+ * @property {string[]} [rulePaths] An array of directories to load custom rules from.
+ * @property {boolean|string} [reportUnusedDisableDirectives] `true`, `"error"` or '"warn"' adds reports for unused eslint-disable directives
+ * @property {boolean} [globInputPaths] Set to false to skip glob resolution of input file paths to lint (default: true). If false, each input file paths is assumed to be a non-glob path to an existing file.
+ * @property {string} [resolvePluginsRelativeTo] The folder where plugins should be resolved from, defaulting to the CWD
+ */
+
+/**
+ * A linting result.
+ * @typedef {Object} LintResult
+ * @property {string} filePath The path to the file that was linted.
+ * @property {LintMessage[]} messages All of the messages for the result.
+ * @property {SuppressedLintMessage[]} suppressedMessages All of the suppressed messages for the result.
+ * @property {number} errorCount Number of errors for the result.
+ * @property {number} fatalErrorCount Number of fatal errors for the result.
+ * @property {number} warningCount Number of warnings for the result.
+ * @property {number} fixableErrorCount Number of fixable errors for the result.
+ * @property {number} fixableWarningCount Number of fixable warnings for the result.
+ * @property {string} [source] The source code of the file that was linted.
+ * @property {string} [output] The source code of the file that was linted, with as many fixes applied as possible.
+ */
+
+/**
+ * Linting results.
+ * @typedef {Object} LintReport
+ * @property {LintResult[]} results All of the result.
+ * @property {number} errorCount Number of errors for the result.
+ * @property {number} fatalErrorCount Number of fatal errors for the result.
+ * @property {number} warningCount Number of warnings for the result.
+ * @property {number} fixableErrorCount Number of fixable errors for the result.
+ * @property {number} fixableWarningCount Number of fixable warnings for the result.
+ * @property {DeprecatedRuleInfo[]} usedDeprecatedRules The list of used deprecated rules.
+ */
+
+/**
+ * Private data for CLIEngine.
+ * @typedef {Object} CLIEngineInternalSlots
+ * @property {Map<string, Plugin>} additionalPluginPool The map for additional plugins.
+ * @property {string} cacheFilePath The path to the cache of lint results.
+ * @property {CascadingConfigArrayFactory} configArrayFactory The factory of configs.
+ * @property {(filePath: string) => boolean} defaultIgnores The default predicate function to check if a file ignored or not.
+ * @property {FileEnumerator} fileEnumerator The file enumerator.
+ * @property {ConfigArray[]} lastConfigArrays The list of config arrays that the last `executeOnFiles` or `executeOnText` used.
+ * @property {LintResultCache|null} lintResultCache The cache of lint results.
+ * @property {Linter} linter The linter instance which has loaded rules.
+ * @property {CLIEngineOptions} options The normalized options of this instance.
+ */
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/** @type {WeakMap<CLIEngine, CLIEngineInternalSlots>} */
+const internalSlotsMap = new WeakMap();
+
+/**
+ * Determines if each fix type in an array is supported by ESLint and throws
+ * an error if not.
+ * @param {string[]} fixTypes An array of fix types to check.
+ * @returns {void}
+ * @throws {Error} If an invalid fix type is found.
+ */
+function validateFixTypes(fixTypes) {
+    for (const fixType of fixTypes) {
+        if (!validFixTypes.has(fixType)) {
+            throw new Error(`Invalid fix type "${fixType}" found.`);
+        }
+    }
+}
+
+/**
+ * It will calculate the error and warning count for collection of messages per file
+ * @param {LintMessage[]} messages Collection of messages
+ * @returns {Object} Contains the stats
+ * @private
+ */
+function calculateStatsPerFile(messages) {
+    const stat = {
+        errorCount: 0,
+        fatalErrorCount: 0,
+        warningCount: 0,
+        fixableErrorCount: 0,
+        fixableWarningCount: 0
+    };
+
+    for (let i = 0; i < messages.length; i++) {
+        const message = messages[i];
+
+        if (message.fatal || message.severity === 2) {
+            stat.errorCount++;
+            if (message.fatal) {
+                stat.fatalErrorCount++;
+            }
+            if (message.fix) {
+                stat.fixableErrorCount++;
+            }
+        } else {
+            stat.warningCount++;
+            if (message.fix) {
+                stat.fixableWarningCount++;
+            }
+        }
+    }
+    return stat;
+}
+
+/**
+ * It will calculate the error and warning count for collection of results from all files
+ * @param {LintResult[]} results Collection of messages from all the files
+ * @returns {Object} Contains the stats
+ * @private
+ */
+function calculateStatsPerRun(results) {
+    const stat = {
+        errorCount: 0,
+        fatalErrorCount: 0,
+        warningCount: 0,
+        fixableErrorCount: 0,
+        fixableWarningCount: 0
+    };
+
+    for (let i = 0; i < results.length; i++) {
+        const result = results[i];
+
+        stat.errorCount += result.errorCount;
+        stat.fatalErrorCount += result.fatalErrorCount;
+        stat.warningCount += result.warningCount;
+        stat.fixableErrorCount += result.fixableErrorCount;
+        stat.fixableWarningCount += result.fixableWarningCount;
+    }
+
+    return stat;
+}
+
+/**
+ * Processes an source code using ESLint.
+ * @param {Object} config The config object.
+ * @param {string} config.text The source code to verify.
+ * @param {string} config.cwd The path to the current working directory.
+ * @param {string|undefined} config.filePath The path to the file of `text`. If this is undefined, it uses `<text>`.
+ * @param {ConfigArray} config.config The config.
+ * @param {boolean} config.fix If `true` then it does fix.
+ * @param {boolean} config.allowInlineConfig If `true` then it uses directive comments.
+ * @param {boolean|string} config.reportUnusedDisableDirectives If `true`, `"error"` or '"warn"', then it reports unused `eslint-disable` comments.
+ * @param {FileEnumerator} config.fileEnumerator The file enumerator to check if a path is a target or not.
+ * @param {Linter} config.linter The linter instance to verify.
+ * @returns {LintResult} The result of linting.
+ * @private
+ */
+function verifyText({
+    text,
+    cwd,
+    filePath: providedFilePath,
+    config,
+    fix,
+    allowInlineConfig,
+    reportUnusedDisableDirectives,
+    fileEnumerator,
+    linter
+}) {
+    const filePath = providedFilePath || "<text>";
+
+    debug(`Lint ${filePath}`);
+
+    /*
+     * Verify.
+     * `config.extractConfig(filePath)` requires an absolute path, but `linter`
+     * doesn't know CWD, so it gives `linter` an absolute path always.
+     */
+    const filePathToVerify = filePath === "<text>" ? path.join(cwd, filePath) : filePath;
+    const { fixed, messages, output } = linter.verifyAndFix(
+        text,
+        config,
+        {
+            allowInlineConfig,
+            filename: filePathToVerify,
+            fix,
+            reportUnusedDisableDirectives,
+
+            /**
+             * Check if the linter should adopt a given code block or not.
+             * @param {string} blockFilename The virtual filename of a code block.
+             * @returns {boolean} `true` if the linter should adopt the code block.
+             */
+            filterCodeBlock(blockFilename) {
+                return fileEnumerator.isTargetPath(blockFilename);
+            }
+        }
+    );
+
+    // Tweak and return.
+    const result = {
+        filePath,
+        messages,
+        suppressedMessages: linter.getSuppressedMessages(),
+        ...calculateStatsPerFile(messages)
+    };
+
+    if (fixed) {
+        result.output = output;
+    }
+    if (
+        result.errorCount + result.warningCount > 0 &&
+        typeof result.output === "undefined"
+    ) {
+        result.source = text;
+    }
+
+    return result;
+}
+
+/**
+ * Returns result with warning by ignore settings
+ * @param {string} filePath File path of checked code
+ * @param {string} baseDir Absolute path of base directory
+ * @returns {LintResult} Result with single warning
+ * @private
+ */
+function createIgnoreResult(filePath, baseDir) {
+    let message;
+    const isHidden = filePath.split(path.sep)
+        .find(segment => /^\./u.test(segment));
+    const isInNodeModules = baseDir && path.relative(baseDir, filePath).startsWith("node_modules");
+
+    if (isHidden) {
+        message = "File ignored by default.  Use a negated ignore pattern (like \"--ignore-pattern '!<relative/path/to/filename>'\") to override.";
+    } else if (isInNodeModules) {
+        message = "File ignored by default. Use \"--ignore-pattern '!node_modules/*'\" to override.";
+    } else {
+        message = "File ignored because of a matching ignore pattern. Use \"--no-ignore\" to override.";
+    }
+
+    return {
+        filePath: path.resolve(filePath),
+        messages: [
+            {
+                ruleId: null,
+                fatal: false,
+                severity: 1,
+                message,
+                nodeType: null
+            }
+        ],
+        suppressedMessages: [],
+        errorCount: 0,
+        fatalErrorCount: 0,
+        warningCount: 1,
+        fixableErrorCount: 0,
+        fixableWarningCount: 0
+    };
+}
+
+/**
+ * Get a rule.
+ * @param {string} ruleId The rule ID to get.
+ * @param {ConfigArray[]} configArrays The config arrays that have plugin rules.
+ * @returns {Rule|null} The rule or null.
+ */
+function getRule(ruleId, configArrays) {
+    for (const configArray of configArrays) {
+        const rule = configArray.pluginRules.get(ruleId);
+
+        if (rule) {
+            return rule;
+        }
+    }
+    return builtInRules.get(ruleId) || null;
+}
+
+/**
+ * Checks whether a message's rule type should be fixed.
+ * @param {LintMessage} message The message to check.
+ * @param {ConfigArray[]} lastConfigArrays The list of config arrays that the last `executeOnFiles` or `executeOnText` used.
+ * @param {string[]} fixTypes An array of fix types to check.
+ * @returns {boolean} Whether the message should be fixed.
+ */
+function shouldMessageBeFixed(message, lastConfigArrays, fixTypes) {
+    if (!message.ruleId) {
+        return fixTypes.has("directive");
+    }
+
+    const rule = message.ruleId && getRule(message.ruleId, lastConfigArrays);
+
+    return Boolean(rule && rule.meta && fixTypes.has(rule.meta.type));
+}
+
+/**
+ * Collect used deprecated rules.
+ * @param {ConfigArray[]} usedConfigArrays The config arrays which were used.
+ * @returns {IterableIterator<DeprecatedRuleInfo>} Used deprecated rules.
+ */
+function *iterateRuleDeprecationWarnings(usedConfigArrays) {
+    const processedRuleIds = new Set();
+
+    // Flatten used configs.
+    /** @type {ExtractedConfig[]} */
+    const configs = usedConfigArrays.flatMap(getUsedExtractedConfigs);
+
+    // Traverse rule configs.
+    for (const config of configs) {
+        for (const [ruleId, ruleConfig] of Object.entries(config.rules)) {
+
+            // Skip if it was processed.
+            if (processedRuleIds.has(ruleId)) {
+                continue;
+            }
+            processedRuleIds.add(ruleId);
+
+            // Skip if it's not used.
+            if (!ConfigOps.getRuleSeverity(ruleConfig)) {
+                continue;
+            }
+            const rule = getRule(ruleId, usedConfigArrays);
+
+            // Skip if it's not deprecated.
+            if (!(rule && rule.meta && rule.meta.deprecated)) {
+                continue;
+            }
+
+            // This rule was used and deprecated.
+            yield {
+                ruleId,
+                replacedBy: rule.meta.replacedBy || []
+            };
+        }
+    }
+}
+
+/**
+ * Checks if the given message is an error message.
+ * @param {LintMessage} message The message to check.
+ * @returns {boolean} Whether or not the message is an error message.
+ * @private
+ */
+function isErrorMessage(message) {
+    return message.severity === 2;
+}
+
+
+/**
+ * return the cacheFile to be used by eslint, based on whether the provided parameter is
+ * a directory or looks like a directory (ends in `path.sep`), in which case the file
+ * name will be the `cacheFile/.cache_hashOfCWD`
+ *
+ * if cacheFile points to a file or looks like a file then it will just use that file
+ * @param {string} cacheFile The name of file to be used to store the cache
+ * @param {string} cwd Current working directory
+ * @returns {string} the resolved path to the cache file
+ */
+function getCacheFile(cacheFile, cwd) {
+
+    /*
+     * make sure the path separators are normalized for the environment/os
+     * keeping the trailing path separator if present
+     */
+    const normalizedCacheFile = path.normalize(cacheFile);
+
+    const resolvedCacheFile = path.resolve(cwd, normalizedCacheFile);
+    const looksLikeADirectory = normalizedCacheFile.slice(-1) === path.sep;
+
+    /**
+     * return the name for the cache file in case the provided parameter is a directory
+     * @returns {string} the resolved path to the cacheFile
+     */
+    function getCacheFileForDirectory() {
+        return path.join(resolvedCacheFile, `.cache_${hash(cwd)}`);
+    }
+
+    let fileStats;
+
+    try {
+        fileStats = fs.lstatSync(resolvedCacheFile);
+    } catch {
+        fileStats = null;
+    }
+
+
+    /*
+     * in case the file exists we need to verify if the provided path
+     * is a directory or a file. If it is a directory we want to create a file
+     * inside that directory
+     */
+    if (fileStats) {
+
+        /*
+         * is a directory or is a file, but the original file the user provided
+         * looks like a directory but `path.resolve` removed the `last path.sep`
+         * so we need to still treat this like a directory
+         */
+        if (fileStats.isDirectory() || looksLikeADirectory) {
+            return getCacheFileForDirectory();
+        }
+
+        // is file so just use that file
+        return resolvedCacheFile;
+    }
+
+    /*
+     * here we known the file or directory doesn't exist,
+     * so we will try to infer if its a directory if it looks like a directory
+     * for the current operating system.
+     */
+
+    // if the last character passed is a path separator we assume is a directory
+    if (looksLikeADirectory) {
+        return getCacheFileForDirectory();
+    }
+
+    return resolvedCacheFile;
+}
+
+/**
+ * Convert a string array to a boolean map.
+ * @param {string[]|null} keys The keys to assign true.
+ * @param {boolean} defaultValue The default value for each property.
+ * @param {string} displayName The property name which is used in error message.
+ * @throws {Error} Requires array.
+ * @returns {Record<string,boolean>} The boolean map.
+ */
+function toBooleanMap(keys, defaultValue, displayName) {
+    if (keys && !Array.isArray(keys)) {
+        throw new Error(`${displayName} must be an array.`);
+    }
+    if (keys && keys.length > 0) {
+        return keys.reduce((map, def) => {
+            const [key, value] = def.split(":");
+
+            if (key !== "__proto__") {
+                map[key] = value === void 0
+                    ? defaultValue
+                    : value === "true";
+            }
+
+            return map;
+        }, {});
+    }
+    return void 0;
+}
+
+/**
+ * Create a config data from CLI options.
+ * @param {CLIEngineOptions} options The options
+ * @returns {ConfigData|null} The created config data.
+ */
+function createConfigDataFromOptions(options) {
+    const {
+        ignorePattern,
+        parser,
+        parserOptions,
+        plugins,
+        rules
+    } = options;
+    const env = toBooleanMap(options.envs, true, "envs");
+    const globals = toBooleanMap(options.globals, false, "globals");
+
+    if (
+        env === void 0 &&
+        globals === void 0 &&
+        (ignorePattern === void 0 || ignorePattern.length === 0) &&
+        parser === void 0 &&
+        parserOptions === void 0 &&
+        plugins === void 0 &&
+        rules === void 0
+    ) {
+        return null;
+    }
+    return {
+        env,
+        globals,
+        ignorePatterns: ignorePattern,
+        parser,
+        parserOptions,
+        plugins,
+        rules
+    };
+}
+
+/**
+ * Checks whether a directory exists at the given location
+ * @param {string} resolvedPath A path from the CWD
+ * @throws {Error} As thrown by `fs.statSync` or `fs.isDirectory`.
+ * @returns {boolean} `true` if a directory exists
+ */
+function directoryExists(resolvedPath) {
+    try {
+        return fs.statSync(resolvedPath).isDirectory();
+    } catch (error) {
+        if (error && (error.code === "ENOENT" || error.code === "ENOTDIR")) {
+            return false;
+        }
+        throw error;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * Core CLI.
+ */
+class CLIEngine {
+
+    /**
+     * Creates a new instance of the core CLI engine.
+     * @param {CLIEngineOptions} providedOptions The options for this instance.
+     * @param {Object} [additionalData] Additional settings that are not CLIEngineOptions.
+     * @param {Record<string,Plugin>|null} [additionalData.preloadedPlugins] Preloaded plugins.
+     */
+    constructor(providedOptions, { preloadedPlugins } = {}) {
+        const options = Object.assign(
+            Object.create(null),
+            defaultOptions,
+            { cwd: process.cwd() },
+            providedOptions
+        );
+
+        if (options.fix === void 0) {
+            options.fix = false;
+        }
+
+        const additionalPluginPool = new Map();
+
+        if (preloadedPlugins) {
+            for (const [id, plugin] of Object.entries(preloadedPlugins)) {
+                additionalPluginPool.set(id, plugin);
+            }
+        }
+
+        const cacheFilePath = getCacheFile(
+            options.cacheLocation || options.cacheFile,
+            options.cwd
+        );
+        const configArrayFactory = new CascadingConfigArrayFactory({
+            additionalPluginPool,
+            baseConfig: options.baseConfig || null,
+            cliConfig: createConfigDataFromOptions(options),
+            cwd: options.cwd,
+            ignorePath: options.ignorePath,
+            resolvePluginsRelativeTo: options.resolvePluginsRelativeTo,
+            rulePaths: options.rulePaths,
+            specificConfigPath: options.configFile,
+            useEslintrc: options.useEslintrc,
+            builtInRules,
+            loadRules,
+            getEslintRecommendedConfig: () => require("@eslint/js").configs.recommended,
+            getEslintAllConfig: () => require("@eslint/js").configs.all
+        });
+        const fileEnumerator = new FileEnumerator({
+            configArrayFactory,
+            cwd: options.cwd,
+            extensions: options.extensions,
+            globInputPaths: options.globInputPaths,
+            errorOnUnmatchedPattern: options.errorOnUnmatchedPattern,
+            ignore: options.ignore
+        });
+        const lintResultCache =
+            options.cache ? new LintResultCache(cacheFilePath, options.cacheStrategy) : null;
+        const linter = new Linter({ cwd: options.cwd });
+
+        /** @type {ConfigArray[]} */
+        const lastConfigArrays = [configArrayFactory.getConfigArrayForFile()];
+
+        // Store private data.
+        internalSlotsMap.set(this, {
+            additionalPluginPool,
+            cacheFilePath,
+            configArrayFactory,
+            defaultIgnores: IgnorePattern.createDefaultIgnore(options.cwd),
+            fileEnumerator,
+            lastConfigArrays,
+            lintResultCache,
+            linter,
+            options
+        });
+
+        // setup special filter for fixes
+        if (options.fix && options.fixTypes && options.fixTypes.length > 0) {
+            debug(`Using fix types ${options.fixTypes}`);
+
+            // throw an error if any invalid fix types are found
+            validateFixTypes(options.fixTypes);
+
+            // convert to Set for faster lookup
+            const fixTypes = new Set(options.fixTypes);
+
+            // save original value of options.fix in case it's a function
+            const originalFix = (typeof options.fix === "function")
+                ? options.fix : () => true;
+
+            options.fix = message => shouldMessageBeFixed(message, lastConfigArrays, fixTypes) && originalFix(message);
+        }
+    }
+
+    getRules() {
+        const { lastConfigArrays } = internalSlotsMap.get(this);
+
+        return new Map(function *() {
+            yield* builtInRules;
+
+            for (const configArray of lastConfigArrays) {
+                yield* configArray.pluginRules;
+            }
+        }());
+    }
+
+    /**
+     * Returns results that only contains errors.
+     * @param {LintResult[]} results The results to filter.
+     * @returns {LintResult[]} The filtered results.
+     */
+    static getErrorResults(results) {
+        const filtered = [];
+
+        results.forEach(result => {
+            const filteredMessages = result.messages.filter(isErrorMessage);
+            const filteredSuppressedMessages = result.suppressedMessages.filter(isErrorMessage);
+
+            if (filteredMessages.length > 0) {
+                filtered.push({
+                    ...result,
+                    messages: filteredMessages,
+                    suppressedMessages: filteredSuppressedMessages,
+                    errorCount: filteredMessages.length,
+                    warningCount: 0,
+                    fixableErrorCount: result.fixableErrorCount,
+                    fixableWarningCount: 0
+                });
+            }
+        });
+
+        return filtered;
+    }
+
+    /**
+     * Outputs fixes from the given results to files.
+     * @param {LintReport} report The report object created by CLIEngine.
+     * @returns {void}
+     */
+    static outputFixes(report) {
+        report.results.filter(result => Object.prototype.hasOwnProperty.call(result, "output")).forEach(result => {
+            fs.writeFileSync(result.filePath, result.output);
+        });
+    }
+
+    /**
+     * Resolves the patterns passed into executeOnFiles() into glob-based patterns
+     * for easier handling.
+     * @param {string[]} patterns The file patterns passed on the command line.
+     * @returns {string[]} The equivalent glob patterns.
+     */
+    resolveFileGlobPatterns(patterns) {
+        const { options } = internalSlotsMap.get(this);
+
+        if (options.globInputPaths === false) {
+            return patterns.filter(Boolean);
+        }
+
+        const extensions = (options.extensions || [".js"]).map(ext => ext.replace(/^\./u, ""));
+        const dirSuffix = `/**/*.{${extensions.join(",")}}`;
+
+        return patterns.filter(Boolean).map(pathname => {
+            const resolvedPath = path.resolve(options.cwd, pathname);
+            const newPath = directoryExists(resolvedPath)
+                ? pathname.replace(/[/\\]$/u, "") + dirSuffix
+                : pathname;
+
+            return path.normalize(newPath).replace(/\\/gu, "/");
+        });
+    }
+
+    /**
+     * Executes the current configuration on an array of file and directory names.
+     * @param {string[]} patterns An array of file and directory names.
+     * @throws {Error} As may be thrown by `fs.unlinkSync`.
+     * @returns {LintReport} The results for all files that were linted.
+     */
+    executeOnFiles(patterns) {
+        const {
+            cacheFilePath,
+            fileEnumerator,
+            lastConfigArrays,
+            lintResultCache,
+            linter,
+            options: {
+                allowInlineConfig,
+                cache,
+                cwd,
+                fix,
+                reportUnusedDisableDirectives
+            }
+        } = internalSlotsMap.get(this);
+        const results = [];
+        const startTime = Date.now();
+
+        // Clear the last used config arrays.
+        lastConfigArrays.length = 0;
+
+        // Delete cache file; should this do here?
+        if (!cache) {
+            try {
+                fs.unlinkSync(cacheFilePath);
+            } catch (error) {
+                const errorCode = error && error.code;
+
+                // Ignore errors when no such file exists or file system is read only (and cache file does not exist)
+                if (errorCode !== "ENOENT" && !(errorCode === "EROFS" && !fs.existsSync(cacheFilePath))) {
+                    throw error;
+                }
+            }
+        }
+
+        // Iterate source code files.
+        for (const { config, filePath, ignored } of fileEnumerator.iterateFiles(patterns)) {
+            if (ignored) {
+                results.push(createIgnoreResult(filePath, cwd));
+                continue;
+            }
+
+            /*
+             * Store used configs for:
+             * - this method uses to collect used deprecated rules.
+             * - `getRules()` method uses to collect all loaded rules.
+             * - `--fix-type` option uses to get the loaded rule's meta data.
+             */
+            if (!lastConfigArrays.includes(config)) {
+                lastConfigArrays.push(config);
+            }
+
+            // Skip if there is cached result.
+            if (lintResultCache) {
+                const cachedResult =
+                    lintResultCache.getCachedLintResults(filePath, config);
+
+                if (cachedResult) {
+                    const hadMessages =
+                        cachedResult.messages &&
+                        cachedResult.messages.length > 0;
+
+                    if (hadMessages && fix) {
+                        debug(`Reprocessing cached file to allow autofix: ${filePath}`);
+                    } else {
+                        debug(`Skipping file since it hasn't changed: ${filePath}`);
+                        results.push(cachedResult);
+                        continue;
+                    }
+                }
+            }
+
+            // Do lint.
+            const result = verifyText({
+                text: fs.readFileSync(filePath, "utf8"),
+                filePath,
+                config,
+                cwd,
+                fix,
+                allowInlineConfig,
+                reportUnusedDisableDirectives,
+                fileEnumerator,
+                linter
+            });
+
+            results.push(result);
+
+            /*
+             * Store the lint result in the LintResultCache.
+             * NOTE: The LintResultCache will remove the file source and any
+             * other properties that are difficult to serialize, and will
+             * hydrate those properties back in on future lint runs.
+             */
+            if (lintResultCache) {
+                lintResultCache.setCachedLintResults(filePath, config, result);
+            }
+        }
+
+        // Persist the cache to disk.
+        if (lintResultCache) {
+            lintResultCache.reconcile();
+        }
+
+        debug(`Linting complete in: ${Date.now() - startTime}ms`);
+        let usedDeprecatedRules;
+
+        return {
+            results,
+            ...calculateStatsPerRun(results),
+
+            // Initialize it lazily because CLI and `ESLint` API don't use it.
+            get usedDeprecatedRules() {
+                if (!usedDeprecatedRules) {
+                    usedDeprecatedRules = Array.from(
+                        iterateRuleDeprecationWarnings(lastConfigArrays)
+                    );
+                }
+                return usedDeprecatedRules;
+            }
+        };
+    }
+
+    /**
+     * Executes the current configuration on text.
+     * @param {string} text A string of JavaScript code to lint.
+     * @param {string} [filename] An optional string representing the texts filename.
+     * @param {boolean} [warnIgnored] Always warn when a file is ignored
+     * @returns {LintReport} The results for the linting.
+     */
+    executeOnText(text, filename, warnIgnored) {
+        const {
+            configArrayFactory,
+            fileEnumerator,
+            lastConfigArrays,
+            linter,
+            options: {
+                allowInlineConfig,
+                cwd,
+                fix,
+                reportUnusedDisableDirectives
+            }
+        } = internalSlotsMap.get(this);
+        const results = [];
+        const startTime = Date.now();
+        const resolvedFilename = filename && path.resolve(cwd, filename);
+
+
+        // Clear the last used config arrays.
+        lastConfigArrays.length = 0;
+        if (resolvedFilename && this.isPathIgnored(resolvedFilename)) {
+            if (warnIgnored) {
+                results.push(createIgnoreResult(resolvedFilename, cwd));
+            }
+        } else {
+            const config = configArrayFactory.getConfigArrayForFile(
+                resolvedFilename || "__placeholder__.js"
+            );
+
+            /*
+             * Store used configs for:
+             * - this method uses to collect used deprecated rules.
+             * - `getRules()` method uses to collect all loaded rules.
+             * - `--fix-type` option uses to get the loaded rule's meta data.
+             */
+            lastConfigArrays.push(config);
+
+            // Do lint.
+            results.push(verifyText({
+                text,
+                filePath: resolvedFilename,
+                config,
+                cwd,
+                fix,
+                allowInlineConfig,
+                reportUnusedDisableDirectives,
+                fileEnumerator,
+                linter
+            }));
+        }
+
+        debug(`Linting complete in: ${Date.now() - startTime}ms`);
+        let usedDeprecatedRules;
+
+        return {
+            results,
+            ...calculateStatsPerRun(results),
+
+            // Initialize it lazily because CLI and `ESLint` API don't use it.
+            get usedDeprecatedRules() {
+                if (!usedDeprecatedRules) {
+                    usedDeprecatedRules = Array.from(
+                        iterateRuleDeprecationWarnings(lastConfigArrays)
+                    );
+                }
+                return usedDeprecatedRules;
+            }
+        };
+    }
+
+    /**
+     * Returns a configuration object for the given file based on the CLI options.
+     * This is the same logic used by the ESLint CLI executable to determine
+     * configuration for each file it processes.
+     * @param {string} filePath The path of the file to retrieve a config object for.
+     * @throws {Error} If filepath a directory path.
+     * @returns {ConfigData} A configuration object for the file.
+     */
+    getConfigForFile(filePath) {
+        const { configArrayFactory, options } = internalSlotsMap.get(this);
+        const absolutePath = path.resolve(options.cwd, filePath);
+
+        if (directoryExists(absolutePath)) {
+            throw Object.assign(
+                new Error("'filePath' should not be a directory path."),
+                { messageTemplate: "print-config-with-directory-path" }
+            );
+        }
+
+        return configArrayFactory
+            .getConfigArrayForFile(absolutePath)
+            .extractConfig(absolutePath)
+            .toCompatibleObjectAsConfigFileContent();
+    }
+
+    /**
+     * Checks if a given path is ignored by ESLint.
+     * @param {string} filePath The path of the file to check.
+     * @returns {boolean} Whether or not the given path is ignored.
+     */
+    isPathIgnored(filePath) {
+        const {
+            configArrayFactory,
+            defaultIgnores,
+            options: { cwd, ignore }
+        } = internalSlotsMap.get(this);
+        const absolutePath = path.resolve(cwd, filePath);
+
+        if (ignore) {
+            const config = configArrayFactory
+                .getConfigArrayForFile(absolutePath)
+                .extractConfig(absolutePath);
+            const ignores = config.ignores || defaultIgnores;
+
+            return ignores(absolutePath);
+        }
+
+        return defaultIgnores(absolutePath);
+    }
+
+    /**
+     * Returns the formatter representing the given format or null if the `format` is not a string.
+     * @param {string} [format] The name of the format to load or the path to a
+     *      custom formatter.
+     * @throws {any} As may be thrown by requiring of formatter
+     * @returns {(FormatterFunction|null)} The formatter function or null if the `format` is not a string.
+     */
+    getFormatter(format) {
+
+        // default is stylish
+        const resolvedFormatName = format || "stylish";
+
+        // only strings are valid formatters
+        if (typeof resolvedFormatName === "string") {
+
+            // replace \ with / for Windows compatibility
+            const normalizedFormatName = resolvedFormatName.replace(/\\/gu, "/");
+
+            const slots = internalSlotsMap.get(this);
+            const cwd = slots ? slots.options.cwd : process.cwd();
+            const namespace = naming.getNamespaceFromTerm(normalizedFormatName);
+
+            let formatterPath;
+
+            // if there's a slash, then it's a file (TODO: this check seems dubious for scoped npm packages)
+            if (!namespace && normalizedFormatName.includes("/")) {
+                formatterPath = path.resolve(cwd, normalizedFormatName);
+            } else {
+                try {
+                    const npmFormat = naming.normalizePackageName(normalizedFormatName, "eslint-formatter");
+
+                    formatterPath = ModuleResolver.resolve(npmFormat, path.join(cwd, "__placeholder__.js"));
+                } catch {
+                    formatterPath = path.resolve(__dirname, "formatters", normalizedFormatName);
+                }
+            }
+
+            try {
+                return require(formatterPath);
+            } catch (ex) {
+                if (format === "table" || format === "codeframe") {
+                    ex.message = `The ${format} formatter is no longer part of core ESLint. Install it manually with \`npm install -D eslint-formatter-${format}\``;
+                } else {
+                    ex.message = `There was a problem loading formatter: ${formatterPath}\nError: ${ex.message}`;
+                }
+                throw ex;
+            }
+
+        } else {
+            return null;
+        }
+    }
+}
+
+CLIEngine.version = pkg.version;
+CLIEngine.getFormatter = CLIEngine.prototype.getFormatter;
+
+module.exports = {
+    CLIEngine,
+
+    /**
+     * Get the internal slots of a given CLIEngine instance for tests.
+     * @param {CLIEngine} instance The CLIEngine instance to get.
+     * @returns {CLIEngineInternalSlots} The internal slots.
+     */
+    getCLIEngineInternalSlots(instance) {
+        return internalSlotsMap.get(instance);
+    }
+};
Index: frontend/node_modules/eslint/lib/cli-engine/file-enumerator.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/file-enumerator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/file-enumerator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,547 @@
+/**
+ * @fileoverview `FileEnumerator` class.
+ *
+ * `FileEnumerator` class has two responsibilities:
+ *
+ * 1. Find target files by processing glob patterns.
+ * 2. Tie each target file and appropriate configuration.
+ *
+ * It provides a method:
+ *
+ * - `iterateFiles(patterns)`
+ *     Iterate files which are matched by given patterns together with the
+ *     corresponded configuration. This is for `CLIEngine#executeOnFiles()`.
+ *     While iterating files, it loads the configuration file of each directory
+ *     before iterate files on the directory, so we can use the configuration
+ *     files to determine target files.
+ *
+ * @example
+ * const enumerator = new FileEnumerator();
+ * const linter = new Linter();
+ *
+ * for (const { config, filePath } of enumerator.iterateFiles(["*.js"])) {
+ *     const code = fs.readFileSync(filePath, "utf8");
+ *     const messages = linter.verify(code, config, filePath);
+ *
+ *     console.log(messages);
+ * }
+ *
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const fs = require("fs");
+const path = require("path");
+const getGlobParent = require("glob-parent");
+const isGlob = require("is-glob");
+const escapeRegExp = require("escape-string-regexp");
+const { Minimatch } = require("minimatch");
+
+const {
+    Legacy: {
+        IgnorePattern,
+        CascadingConfigArrayFactory
+    }
+} = require("@eslint/eslintrc");
+const debug = require("debug")("eslint:file-enumerator");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const minimatchOpts = { dot: true, matchBase: true };
+const dotfilesPattern = /(?:(?:^\.)|(?:[/\\]\.))[^/\\.].*/u;
+const NONE = 0;
+const IGNORED_SILENTLY = 1;
+const IGNORED = 2;
+
+// For VSCode intellisense
+/** @typedef {ReturnType<CascadingConfigArrayFactory.getConfigArrayForFile>} ConfigArray */
+
+/**
+ * @typedef {Object} FileEnumeratorOptions
+ * @property {CascadingConfigArrayFactory} [configArrayFactory] The factory for config arrays.
+ * @property {string} [cwd] The base directory to start lookup.
+ * @property {string[]} [extensions] The extensions to match files for directory patterns.
+ * @property {boolean} [globInputPaths] Set to false to skip glob resolution of input file paths to lint (default: true). If false, each input file paths is assumed to be a non-glob path to an existing file.
+ * @property {boolean} [ignore] The flag to check ignored files.
+ * @property {string[]} [rulePaths] The value of `--rulesdir` option.
+ */
+
+/**
+ * @typedef {Object} FileAndConfig
+ * @property {string} filePath The path to a target file.
+ * @property {ConfigArray} config The config entries of that file.
+ * @property {boolean} ignored If `true` then this file should be ignored and warned because it was directly specified.
+ */
+
+/**
+ * @typedef {Object} FileEntry
+ * @property {string} filePath The path to a target file.
+ * @property {ConfigArray} config The config entries of that file.
+ * @property {NONE|IGNORED_SILENTLY|IGNORED} flag The flag.
+ * - `NONE` means the file is a target file.
+ * - `IGNORED_SILENTLY` means the file should be ignored silently.
+ * - `IGNORED` means the file should be ignored and warned because it was directly specified.
+ */
+
+/**
+ * @typedef {Object} FileEnumeratorInternalSlots
+ * @property {CascadingConfigArrayFactory} configArrayFactory The factory for config arrays.
+ * @property {string} cwd The base directory to start lookup.
+ * @property {RegExp|null} extensionRegExp The RegExp to test if a string ends with specific file extensions.
+ * @property {boolean} globInputPaths Set to false to skip glob resolution of input file paths to lint (default: true). If false, each input file paths is assumed to be a non-glob path to an existing file.
+ * @property {boolean} ignoreFlag The flag to check ignored files.
+ * @property {(filePath:string, dot:boolean) => boolean} defaultIgnores The default predicate function to ignore files.
+ */
+
+/** @type {WeakMap<FileEnumerator, FileEnumeratorInternalSlots>} */
+const internalSlotsMap = new WeakMap();
+
+/**
+ * Check if a string is a glob pattern or not.
+ * @param {string} pattern A glob pattern.
+ * @returns {boolean} `true` if the string is a glob pattern.
+ */
+function isGlobPattern(pattern) {
+    return isGlob(path.sep === "\\" ? pattern.replace(/\\/gu, "/") : pattern);
+}
+
+/**
+ * Get stats of a given path.
+ * @param {string} filePath The path to target file.
+ * @throws {Error} As may be thrown by `fs.statSync`.
+ * @returns {fs.Stats|null} The stats.
+ * @private
+ */
+function statSafeSync(filePath) {
+    try {
+        return fs.statSync(filePath);
+    } catch (error) {
+
+        /* c8 ignore next */
+        if (error.code !== "ENOENT") {
+            throw error;
+        }
+        return null;
+    }
+}
+
+/**
+ * Get filenames in a given path to a directory.
+ * @param {string} directoryPath The path to target directory.
+ * @throws {Error} As may be thrown by `fs.readdirSync`.
+ * @returns {import("fs").Dirent[]} The filenames.
+ * @private
+ */
+function readdirSafeSync(directoryPath) {
+    try {
+        return fs.readdirSync(directoryPath, { withFileTypes: true });
+    } catch (error) {
+
+        /* c8 ignore next */
+        if (error.code !== "ENOENT") {
+            throw error;
+        }
+        return [];
+    }
+}
+
+/**
+ * Create a `RegExp` object to detect extensions.
+ * @param {string[] | null} extensions The extensions to create.
+ * @returns {RegExp | null} The created `RegExp` object or null.
+ */
+function createExtensionRegExp(extensions) {
+    if (extensions) {
+        const normalizedExts = extensions.map(ext => escapeRegExp(
+            ext.startsWith(".")
+                ? ext.slice(1)
+                : ext
+        ));
+
+        return new RegExp(
+            `.\\.(?:${normalizedExts.join("|")})$`,
+            "u"
+        );
+    }
+    return null;
+}
+
+/**
+ * The error type when no files match a glob.
+ */
+class NoFilesFoundError extends Error {
+
+    /**
+     * @param {string} pattern The glob pattern which was not found.
+     * @param {boolean} globDisabled If `true` then the pattern was a glob pattern, but glob was disabled.
+     */
+    constructor(pattern, globDisabled) {
+        super(`No files matching '${pattern}' were found${globDisabled ? " (glob was disabled)" : ""}.`);
+        this.messageTemplate = "file-not-found";
+        this.messageData = { pattern, globDisabled };
+    }
+}
+
+/**
+ * The error type when there are files matched by a glob, but all of them have been ignored.
+ */
+class AllFilesIgnoredError extends Error {
+
+    /**
+     * @param {string} pattern The glob pattern which was not found.
+     */
+    constructor(pattern) {
+        super(`All files matched by '${pattern}' are ignored.`);
+        this.messageTemplate = "all-files-ignored";
+        this.messageData = { pattern };
+    }
+}
+
+/**
+ * This class provides the functionality that enumerates every file which is
+ * matched by given glob patterns and that configuration.
+ */
+class FileEnumerator {
+
+    /**
+     * Initialize this enumerator.
+     * @param {FileEnumeratorOptions} options The options.
+     */
+    constructor({
+        cwd = process.cwd(),
+        configArrayFactory = new CascadingConfigArrayFactory({
+            cwd,
+            getEslintRecommendedConfig: () => require("@eslint/js").configs.recommended,
+            getEslintAllConfig: () => require("@eslint/js").configs.all
+        }),
+        extensions = null,
+        globInputPaths = true,
+        errorOnUnmatchedPattern = true,
+        ignore = true
+    } = {}) {
+        internalSlotsMap.set(this, {
+            configArrayFactory,
+            cwd,
+            defaultIgnores: IgnorePattern.createDefaultIgnore(cwd),
+            extensionRegExp: createExtensionRegExp(extensions),
+            globInputPaths,
+            errorOnUnmatchedPattern,
+            ignoreFlag: ignore
+        });
+    }
+
+    /**
+     * Check if a given file is target or not.
+     * @param {string} filePath The path to a candidate file.
+     * @param {ConfigArray} [providedConfig] Optional. The configuration for the file.
+     * @returns {boolean} `true` if the file is a target.
+     */
+    isTargetPath(filePath, providedConfig) {
+        const {
+            configArrayFactory,
+            extensionRegExp
+        } = internalSlotsMap.get(this);
+
+        // If `--ext` option is present, use it.
+        if (extensionRegExp) {
+            return extensionRegExp.test(filePath);
+        }
+
+        // `.js` file is target by default.
+        if (filePath.endsWith(".js")) {
+            return true;
+        }
+
+        // use `overrides[].files` to check additional targets.
+        const config =
+            providedConfig ||
+            configArrayFactory.getConfigArrayForFile(
+                filePath,
+                { ignoreNotFoundError: true }
+            );
+
+        return config.isAdditionalTargetPath(filePath);
+    }
+
+    /**
+     * Iterate files which are matched by given glob patterns.
+     * @param {string|string[]} patternOrPatterns The glob patterns to iterate files.
+     * @throws {NoFilesFoundError|AllFilesIgnoredError} On an unmatched pattern.
+     * @returns {IterableIterator<FileAndConfig>} The found files.
+     */
+    *iterateFiles(patternOrPatterns) {
+        const { globInputPaths, errorOnUnmatchedPattern } = internalSlotsMap.get(this);
+        const patterns = Array.isArray(patternOrPatterns)
+            ? patternOrPatterns
+            : [patternOrPatterns];
+
+        debug("Start to iterate files: %o", patterns);
+
+        // The set of paths to remove duplicate.
+        const set = new Set();
+
+        for (const pattern of patterns) {
+            let foundRegardlessOfIgnored = false;
+            let found = false;
+
+            // Skip empty string.
+            if (!pattern) {
+                continue;
+            }
+
+            // Iterate files of this pattern.
+            for (const { config, filePath, flag } of this._iterateFiles(pattern)) {
+                foundRegardlessOfIgnored = true;
+                if (flag === IGNORED_SILENTLY) {
+                    continue;
+                }
+                found = true;
+
+                // Remove duplicate paths while yielding paths.
+                if (!set.has(filePath)) {
+                    set.add(filePath);
+                    yield {
+                        config,
+                        filePath,
+                        ignored: flag === IGNORED
+                    };
+                }
+            }
+
+            // Raise an error if any files were not found.
+            if (errorOnUnmatchedPattern) {
+                if (!foundRegardlessOfIgnored) {
+                    throw new NoFilesFoundError(
+                        pattern,
+                        !globInputPaths && isGlob(pattern)
+                    );
+                }
+                if (!found) {
+                    throw new AllFilesIgnoredError(pattern);
+                }
+            }
+        }
+
+        debug(`Complete iterating files: ${JSON.stringify(patterns)}`);
+    }
+
+    /**
+     * Iterate files which are matched by a given glob pattern.
+     * @param {string} pattern The glob pattern to iterate files.
+     * @returns {IterableIterator<FileEntry>} The found files.
+     */
+    _iterateFiles(pattern) {
+        const { cwd, globInputPaths } = internalSlotsMap.get(this);
+        const absolutePath = path.resolve(cwd, pattern);
+        const isDot = dotfilesPattern.test(pattern);
+        const stat = statSafeSync(absolutePath);
+
+        if (stat && stat.isDirectory()) {
+            return this._iterateFilesWithDirectory(absolutePath, isDot);
+        }
+        if (stat && stat.isFile()) {
+            return this._iterateFilesWithFile(absolutePath);
+        }
+        if (globInputPaths && isGlobPattern(pattern)) {
+            return this._iterateFilesWithGlob(pattern, isDot);
+        }
+
+        return [];
+    }
+
+    /**
+     * Iterate a file which is matched by a given path.
+     * @param {string} filePath The path to the target file.
+     * @returns {IterableIterator<FileEntry>} The found files.
+     * @private
+     */
+    _iterateFilesWithFile(filePath) {
+        debug(`File: ${filePath}`);
+
+        const { configArrayFactory } = internalSlotsMap.get(this);
+        const config = configArrayFactory.getConfigArrayForFile(filePath);
+        const ignored = this._isIgnoredFile(filePath, { config, direct: true });
+        const flag = ignored ? IGNORED : NONE;
+
+        return [{ config, filePath, flag }];
+    }
+
+    /**
+     * Iterate files in a given path.
+     * @param {string} directoryPath The path to the target directory.
+     * @param {boolean} dotfiles If `true` then it doesn't skip dot files by default.
+     * @returns {IterableIterator<FileEntry>} The found files.
+     * @private
+     */
+    _iterateFilesWithDirectory(directoryPath, dotfiles) {
+        debug(`Directory: ${directoryPath}`);
+
+        return this._iterateFilesRecursive(
+            directoryPath,
+            { dotfiles, recursive: true, selector: null }
+        );
+    }
+
+    /**
+     * Iterate files which are matched by a given glob pattern.
+     * @param {string} pattern The glob pattern to iterate files.
+     * @param {boolean} dotfiles If `true` then it doesn't skip dot files by default.
+     * @returns {IterableIterator<FileEntry>} The found files.
+     * @private
+     */
+    _iterateFilesWithGlob(pattern, dotfiles) {
+        debug(`Glob: ${pattern}`);
+
+        const { cwd } = internalSlotsMap.get(this);
+        const directoryPath = path.resolve(cwd, getGlobParent(pattern));
+        const absolutePath = path.resolve(cwd, pattern);
+        const globPart = absolutePath.slice(directoryPath.length + 1);
+
+        /*
+         * recursive if there are `**` or path separators in the glob part.
+         * Otherwise, patterns such as `src/*.js`, it doesn't need recursive.
+         */
+        const recursive = /\*\*|\/|\\/u.test(globPart);
+        const selector = new Minimatch(absolutePath, minimatchOpts);
+
+        debug(`recursive? ${recursive}`);
+
+        return this._iterateFilesRecursive(
+            directoryPath,
+            { dotfiles, recursive, selector }
+        );
+    }
+
+    /**
+     * Iterate files in a given path.
+     * @param {string} directoryPath The path to the target directory.
+     * @param {Object} options The options to iterate files.
+     * @param {boolean} [options.dotfiles] If `true` then it doesn't skip dot files by default.
+     * @param {boolean} [options.recursive] If `true` then it dives into sub directories.
+     * @param {InstanceType<Minimatch>} [options.selector] The matcher to choose files.
+     * @returns {IterableIterator<FileEntry>} The found files.
+     * @private
+     */
+    *_iterateFilesRecursive(directoryPath, options) {
+        debug(`Enter the directory: ${directoryPath}`);
+        const { configArrayFactory } = internalSlotsMap.get(this);
+
+        /** @type {ConfigArray|null} */
+        let config = null;
+
+        // Enumerate the files of this directory.
+        for (const entry of readdirSafeSync(directoryPath)) {
+            const filePath = path.join(directoryPath, entry.name);
+            const fileInfo = entry.isSymbolicLink() ? statSafeSync(filePath) : entry;
+
+            if (!fileInfo) {
+                continue;
+            }
+
+            // Check if the file is matched.
+            if (fileInfo.isFile()) {
+                if (!config) {
+                    config = configArrayFactory.getConfigArrayForFile(
+                        filePath,
+
+                        /*
+                         * We must ignore `ConfigurationNotFoundError` at this
+                         * point because we don't know if target files exist in
+                         * this directory.
+                         */
+                        { ignoreNotFoundError: true }
+                    );
+                }
+                const matched = options.selector
+
+                    // Started with a glob pattern; choose by the pattern.
+                    ? options.selector.match(filePath)
+
+                    // Started with a directory path; choose by file extensions.
+                    : this.isTargetPath(filePath, config);
+
+                if (matched) {
+                    const ignored = this._isIgnoredFile(filePath, { ...options, config });
+                    const flag = ignored ? IGNORED_SILENTLY : NONE;
+
+                    debug(`Yield: ${entry.name}${ignored ? " but ignored" : ""}`);
+                    yield {
+                        config: configArrayFactory.getConfigArrayForFile(filePath),
+                        filePath,
+                        flag
+                    };
+                } else {
+                    debug(`Didn't match: ${entry.name}`);
+                }
+
+            // Dive into the sub directory.
+            } else if (options.recursive && fileInfo.isDirectory()) {
+                if (!config) {
+                    config = configArrayFactory.getConfigArrayForFile(
+                        filePath,
+                        { ignoreNotFoundError: true }
+                    );
+                }
+                const ignored = this._isIgnoredFile(
+                    filePath + path.sep,
+                    { ...options, config }
+                );
+
+                if (!ignored) {
+                    yield* this._iterateFilesRecursive(filePath, options);
+                }
+            }
+        }
+
+        debug(`Leave the directory: ${directoryPath}`);
+    }
+
+    /**
+     * Check if a given file should be ignored.
+     * @param {string} filePath The path to a file to check.
+     * @param {Object} options Options
+     * @param {ConfigArray} [options.config] The config for this file.
+     * @param {boolean} [options.dotfiles] If `true` then this is not ignore dot files by default.
+     * @param {boolean} [options.direct] If `true` then this is a direct specified file.
+     * @returns {boolean} `true` if the file should be ignored.
+     * @private
+     */
+    _isIgnoredFile(filePath, {
+        config: providedConfig,
+        dotfiles = false,
+        direct = false
+    }) {
+        const {
+            configArrayFactory,
+            defaultIgnores,
+            ignoreFlag
+        } = internalSlotsMap.get(this);
+
+        if (ignoreFlag) {
+            const config =
+                providedConfig ||
+                configArrayFactory.getConfigArrayForFile(
+                    filePath,
+                    { ignoreNotFoundError: true }
+                );
+            const ignores =
+                config.extractConfig(filePath).ignores || defaultIgnores;
+
+            return ignores(filePath, dotfiles);
+        }
+
+        return !direct && defaultIgnores(filePath, dotfiles);
+    }
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = { FileEnumerator };
Index: frontend/node_modules/eslint/lib/cli-engine/formatters/checkstyle.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/formatters/checkstyle.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/formatters/checkstyle.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,60 @@
+/**
+ * @fileoverview CheckStyle XML reporter
+ * @author Ian Christian Myers
+ */
+"use strict";
+
+const xmlEscape = require("../xml-escape");
+
+//------------------------------------------------------------------------------
+// Helper Functions
+//------------------------------------------------------------------------------
+
+/**
+ * Returns the severity of warning or error
+ * @param {Object} message message object to examine
+ * @returns {string} severity level
+ * @private
+ */
+function getMessageType(message) {
+    if (message.fatal || message.severity === 2) {
+        return "error";
+    }
+    return "warning";
+
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    let output = "";
+
+    output += "<?xml version=\"1.0\" encoding=\"utf-8\"?>";
+    output += "<checkstyle version=\"4.3\">";
+
+    results.forEach(result => {
+        const messages = result.messages;
+
+        output += `<file name="${xmlEscape(result.filePath)}">`;
+
+        messages.forEach(message => {
+            output += [
+                `<error line="${xmlEscape(message.line || 0)}"`,
+                `column="${xmlEscape(message.column || 0)}"`,
+                `severity="${xmlEscape(getMessageType(message))}"`,
+                `message="${xmlEscape(message.message)}${message.ruleId ? ` (${message.ruleId})` : ""}"`,
+                `source="${message.ruleId ? xmlEscape(`eslint.rules.${message.ruleId}`) : ""}" />`
+            ].join(" ");
+        });
+
+        output += "</file>";
+
+    });
+
+    output += "</checkstyle>";
+
+    return output;
+};
Index: frontend/node_modules/eslint/lib/cli-engine/formatters/compact.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/formatters/compact.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/formatters/compact.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,60 @@
+/**
+ * @fileoverview Compact reporter
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helper Functions
+//------------------------------------------------------------------------------
+
+/**
+ * Returns the severity of warning or error
+ * @param {Object} message message object to examine
+ * @returns {string} severity level
+ * @private
+ */
+function getMessageType(message) {
+    if (message.fatal || message.severity === 2) {
+        return "Error";
+    }
+    return "Warning";
+
+}
+
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    let output = "",
+        total = 0;
+
+    results.forEach(result => {
+
+        const messages = result.messages;
+
+        total += messages.length;
+
+        messages.forEach(message => {
+
+            output += `${result.filePath}: `;
+            output += `line ${message.line || 0}`;
+            output += `, col ${message.column || 0}`;
+            output += `, ${getMessageType(message)}`;
+            output += ` - ${message.message}`;
+            output += message.ruleId ? ` (${message.ruleId})` : "";
+            output += "\n";
+
+        });
+
+    });
+
+    if (total > 0) {
+        output += `\n${total} problem${total !== 1 ? "s" : ""}`;
+    }
+
+    return output;
+};
Index: frontend/node_modules/eslint/lib/cli-engine/formatters/formatters-meta.json
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/formatters/formatters-meta.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/formatters/formatters-meta.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,46 @@
+[
+    {
+        "name": "checkstyle",
+        "description": "Outputs results to the [Checkstyle](https://checkstyle.sourceforge.io/) format."
+    },
+    {
+        "name": "compact",
+        "description": "Human-readable output format. Mimics the default output of JSHint."
+    },
+    {
+        "name": "html",
+        "description": "Outputs results to HTML. The `html` formatter is useful for visual presentation in the browser."
+    },
+    {
+        "name": "jslint-xml",
+        "description": "Outputs results to format compatible with the [JSLint Jenkins plugin](https://plugins.jenkins.io/jslint/)."
+    },
+    {
+        "name": "json-with-metadata",
+        "description": "Outputs JSON-serialized results. The `json-with-metadata` provides the same linting results as the [`json`](#json) formatter with additional metadata about the rules applied. The linting results are included in the `results` property and the rules metadata is included in the `metadata` property.\n\nAlternatively, you can use the [ESLint Node.js API](../../integrate/nodejs-api) to programmatically use ESLint."
+    },
+    {
+        "name": "json",
+        "description": "Outputs JSON-serialized results. The `json` formatter is useful when you want to programmatically work with the CLI's linting results.\n\nAlternatively, you can use the [ESLint Node.js API](../../integrate/nodejs-api) to programmatically use ESLint."
+    },
+    {
+        "name": "junit",
+        "description": "Outputs results to format compatible with the [JUnit Jenkins plugin](https://plugins.jenkins.io/junit/)."
+    },
+    {
+        "name": "stylish",
+        "description": "Human-readable output format. This is the default formatter."
+    },
+    {
+        "name": "tap",
+        "description": "Outputs results to the [Test Anything Protocol (TAP)](https://testanything.org/) specification format."
+    },
+    {
+        "name": "unix",
+        "description": "Outputs results to a format similar to many commands in UNIX-like systems. Parsable with tools such as [grep](https://www.gnu.org/software/grep/manual/grep.html), [sed](https://www.gnu.org/software/sed/manual/sed.html), and [awk](https://www.gnu.org/software/gawk/manual/gawk.html)."
+    },
+    {
+        "name": "visualstudio",
+        "description": "Outputs results to format compatible with the integrated terminal of the [Visual Studio](https://visualstudio.microsoft.com/) IDE. When using Visual Studio, you can click on the linting results in the integrated terminal to go to the issue in the source code."
+    }
+]
Index: frontend/node_modules/eslint/lib/cli-engine/formatters/html.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/formatters/html.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/formatters/html.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,351 @@
+/**
+ * @fileoverview HTML reporter
+ * @author Julian Laval
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const encodeHTML = (function() {
+    const encodeHTMLRules = {
+        "&": "&#38;",
+        "<": "&#60;",
+        ">": "&#62;",
+        '"': "&#34;",
+        "'": "&#39;"
+    };
+    const matchHTML = /[&<>"']/ug;
+
+    return function(code) {
+        return code
+            ? code.toString().replace(matchHTML, m => encodeHTMLRules[m] || m)
+            : "";
+    };
+}());
+
+/**
+ * Get the final HTML document.
+ * @param {Object} it data for the document.
+ * @returns {string} HTML document.
+ */
+function pageTemplate(it) {
+    const { reportColor, reportSummary, date, results } = it;
+
+    return `
+<!DOCTYPE html>
+<html>
+    <head>
+        <meta charset="UTF-8">
+        <title>ESLint Report</title>
+        <link rel="icon" type="image/png" sizes="any" href="data:image/png;base64,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">
+        <link rel="icon" type="image/svg+xml" href="data:image/svg+xml;base64,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">
+        <style>
+            body {
+                font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
+                font-size: 16px;
+                font-weight: normal;
+                margin: 0;
+                padding: 0;
+                color: #333;
+            }
+
+            #overview {
+                padding: 20px 30px;
+            }
+
+            td,
+            th {
+                padding: 5px 10px;
+            }
+
+            h1 {
+                margin: 0;
+            }
+
+            table {
+                margin: 30px;
+                width: calc(100% - 60px);
+                max-width: 1000px;
+                border-radius: 5px;
+                border: 1px solid #ddd;
+                border-spacing: 0;
+            }
+
+            th {
+                font-weight: 400;
+                font-size: medium;
+                text-align: left;
+                cursor: pointer;
+            }
+
+            td.clr-1,
+            td.clr-2,
+            th span {
+                font-weight: 700;
+            }
+
+            th span {
+                float: right;
+                margin-left: 20px;
+            }
+
+            th span::after {
+                content: "";
+                clear: both;
+                display: block;
+            }
+
+            tr:last-child td {
+                border-bottom: none;
+            }
+
+            tr td:first-child,
+            tr td:last-child {
+                color: #9da0a4;
+            }
+
+            #overview.bg-0,
+            tr.bg-0 th {
+                color: #468847;
+                background: #dff0d8;
+                border-bottom: 1px solid #d6e9c6;
+            }
+
+            #overview.bg-1,
+            tr.bg-1 th {
+                color: #f0ad4e;
+                background: #fcf8e3;
+                border-bottom: 1px solid #fbeed5;
+            }
+
+            #overview.bg-2,
+            tr.bg-2 th {
+                color: #b94a48;
+                background: #f2dede;
+                border-bottom: 1px solid #eed3d7;
+            }
+
+            td {
+                border-bottom: 1px solid #ddd;
+            }
+
+            td.clr-1 {
+                color: #f0ad4e;
+            }
+
+            td.clr-2 {
+                color: #b94a48;
+            }
+
+            td a {
+                color: #3a33d1;
+                text-decoration: none;
+            }
+
+            td a:hover {
+                color: #272296;
+                text-decoration: underline;
+            }
+        </style>
+    </head>
+    <body>
+        <div id="overview" class="bg-${reportColor}">
+            <h1>ESLint Report</h1>
+            <div>
+                <span>${reportSummary}</span> - Generated on ${date}
+            </div>
+        </div>
+        <table>
+            <tbody>
+                ${results}
+            </tbody>
+        </table>
+        <script type="text/javascript">
+            var groups = document.querySelectorAll("tr[data-group]");
+            for (i = 0; i < groups.length; i++) {
+                groups[i].addEventListener("click", function() {
+                    var inGroup = document.getElementsByClassName(this.getAttribute("data-group"));
+                    this.innerHTML = (this.innerHTML.indexOf("+") > -1) ? this.innerHTML.replace("+", "-") : this.innerHTML.replace("-", "+");
+                    for (var j = 0; j < inGroup.length; j++) {
+                        inGroup[j].style.display = (inGroup[j].style.display !== "none") ? "none" : "table-row";
+                    }
+                });
+            }
+        </script>
+    </body>
+</html>
+`.trimStart();
+}
+
+/**
+ * Given a word and a count, append an s if count is not one.
+ * @param {string} word A word in its singular form.
+ * @param {int} count A number controlling whether word should be pluralized.
+ * @returns {string} The original word with an s on the end if count is not one.
+ */
+function pluralize(word, count) {
+    return (count === 1 ? word : `${word}s`);
+}
+
+/**
+ * Renders text along the template of x problems (x errors, x warnings)
+ * @param {string} totalErrors Total errors
+ * @param {string} totalWarnings Total warnings
+ * @returns {string} The formatted string, pluralized where necessary
+ */
+function renderSummary(totalErrors, totalWarnings) {
+    const totalProblems = totalErrors + totalWarnings;
+    let renderedText = `${totalProblems} ${pluralize("problem", totalProblems)}`;
+
+    if (totalProblems !== 0) {
+        renderedText += ` (${totalErrors} ${pluralize("error", totalErrors)}, ${totalWarnings} ${pluralize("warning", totalWarnings)})`;
+    }
+    return renderedText;
+}
+
+/**
+ * Get the color based on whether there are errors/warnings...
+ * @param {string} totalErrors Total errors
+ * @param {string} totalWarnings Total warnings
+ * @returns {int} The color code (0 = green, 1 = yellow, 2 = red)
+ */
+function renderColor(totalErrors, totalWarnings) {
+    if (totalErrors !== 0) {
+        return 2;
+    }
+    if (totalWarnings !== 0) {
+        return 1;
+    }
+    return 0;
+}
+
+/**
+ * Get HTML (table row) describing a single message.
+ * @param {Object} it data for the message.
+ * @returns {string} HTML (table row) describing the message.
+ */
+function messageTemplate(it) {
+    const {
+        parentIndex,
+        lineNumber,
+        columnNumber,
+        severityNumber,
+        severityName,
+        message,
+        ruleUrl,
+        ruleId
+    } = it;
+
+    return `
+<tr style="display: none;" class="f-${parentIndex}">
+    <td>${lineNumber}:${columnNumber}</td>
+    <td class="clr-${severityNumber}">${severityName}</td>
+    <td>${encodeHTML(message)}</td>
+    <td>
+        <a href="${ruleUrl ? ruleUrl : ""}" target="_blank" rel="noopener noreferrer">${ruleId ? ruleId : ""}</a>
+    </td>
+</tr>
+`.trimStart();
+}
+
+/**
+ * Get HTML (table rows) describing the messages.
+ * @param {Array} messages Messages.
+ * @param {int} parentIndex Index of the parent HTML row.
+ * @param {Object} rulesMeta Dictionary containing metadata for each rule executed by the analysis.
+ * @returns {string} HTML (table rows) describing the messages.
+ */
+function renderMessages(messages, parentIndex, rulesMeta) {
+
+    /**
+     * Get HTML (table row) describing a message.
+     * @param {Object} message Message.
+     * @returns {string} HTML (table row) describing a message.
+     */
+    return messages.map(message => {
+        const lineNumber = message.line || 0;
+        const columnNumber = message.column || 0;
+        let ruleUrl;
+
+        if (rulesMeta) {
+            const meta = rulesMeta[message.ruleId];
+
+            if (meta && meta.docs && meta.docs.url) {
+                ruleUrl = meta.docs.url;
+            }
+        }
+
+        return messageTemplate({
+            parentIndex,
+            lineNumber,
+            columnNumber,
+            severityNumber: message.severity,
+            severityName: message.severity === 1 ? "Warning" : "Error",
+            message: message.message,
+            ruleId: message.ruleId,
+            ruleUrl
+        });
+    }).join("\n");
+}
+
+/**
+ * Get HTML (table row) describing the result for a single file.
+ * @param {Object} it data for the file.
+ * @returns {string} HTML (table row) describing the result for the file.
+ */
+function resultTemplate(it) {
+    const { color, index, filePath, summary } = it;
+
+    return `
+<tr class="bg-${color}" data-group="f-${index}">
+    <th colspan="4">
+        [+] ${encodeHTML(filePath)}
+        <span>${encodeHTML(summary)}</span>
+    </th>
+</tr>
+`.trimStart();
+}
+
+/**
+ * Render the results.
+ * @param {Array} results Test results.
+ * @param {Object} rulesMeta Dictionary containing metadata for each rule executed by the analysis.
+ * @returns {string} HTML string describing the results.
+ */
+function renderResults(results, rulesMeta) {
+    return results.map((result, index) => resultTemplate({
+        index,
+        color: renderColor(result.errorCount, result.warningCount),
+        filePath: result.filePath,
+        summary: renderSummary(result.errorCount, result.warningCount)
+    }) + renderMessages(result.messages, index, rulesMeta)).join("\n");
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results, data) {
+    let totalErrors,
+        totalWarnings;
+
+    const metaData = data ? data.rulesMeta : {};
+
+    totalErrors = 0;
+    totalWarnings = 0;
+
+    // Iterate over results to get totals
+    results.forEach(result => {
+        totalErrors += result.errorCount;
+        totalWarnings += result.warningCount;
+    });
+
+    return pageTemplate({
+        date: new Date(),
+        reportColor: renderColor(totalErrors, totalWarnings),
+        reportSummary: renderSummary(totalErrors, totalWarnings),
+        results: renderResults(results, metaData)
+    });
+};
Index: frontend/node_modules/eslint/lib/cli-engine/formatters/jslint-xml.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/formatters/jslint-xml.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/formatters/jslint-xml.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,41 @@
+/**
+ * @fileoverview JSLint XML reporter
+ * @author Ian Christian Myers
+ */
+"use strict";
+
+const xmlEscape = require("../xml-escape");
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    let output = "";
+
+    output += "<?xml version=\"1.0\" encoding=\"utf-8\"?>";
+    output += "<jslint>";
+
+    results.forEach(result => {
+        const messages = result.messages;
+
+        output += `<file name="${result.filePath}">`;
+
+        messages.forEach(message => {
+            output += [
+                `<issue line="${message.line}"`,
+                `char="${message.column}"`,
+                `evidence="${xmlEscape(message.source || "")}"`,
+                `reason="${xmlEscape(message.message || "")}${message.ruleId ? ` (${message.ruleId})` : ""}" />`
+            ].join(" ");
+        });
+
+        output += "</file>";
+
+    });
+
+    output += "</jslint>";
+
+    return output;
+};
Index: frontend/node_modules/eslint/lib/cli-engine/formatters/json-with-metadata.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/formatters/json-with-metadata.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/formatters/json-with-metadata.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,16 @@
+/**
+ * @fileoverview JSON reporter, including rules metadata
+ * @author Chris Meyer
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results, data) {
+    return JSON.stringify({
+        results,
+        metadata: data
+    });
+};
Index: frontend/node_modules/eslint/lib/cli-engine/formatters/json.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/formatters/json.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/formatters/json.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,13 @@
+/**
+ * @fileoverview JSON reporter
+ * @author Burak Yigit Kaya aka BYK
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+    return JSON.stringify(results);
+};
Index: frontend/node_modules/eslint/lib/cli-engine/formatters/junit.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/formatters/junit.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/formatters/junit.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,82 @@
+/**
+ * @fileoverview jUnit Reporter
+ * @author Jamund Ferguson
+ */
+"use strict";
+
+const xmlEscape = require("../xml-escape");
+const path = require("path");
+
+//------------------------------------------------------------------------------
+// Helper Functions
+//------------------------------------------------------------------------------
+
+/**
+ * Returns the severity of warning or error
+ * @param {Object} message message object to examine
+ * @returns {string} severity level
+ * @private
+ */
+function getMessageType(message) {
+    if (message.fatal || message.severity === 2) {
+        return "Error";
+    }
+    return "Warning";
+
+}
+
+/**
+ * Returns a full file path without extension
+ * @param {string} filePath input file path
+ * @returns {string} file path without extension
+ * @private
+ */
+function pathWithoutExt(filePath) {
+    return path.join(path.dirname(filePath), path.basename(filePath, path.extname(filePath)));
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    let output = "";
+
+    output += "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
+    output += "<testsuites>\n";
+
+    results.forEach(result => {
+
+        const messages = result.messages;
+        const classname = pathWithoutExt(result.filePath);
+
+        if (messages.length > 0) {
+            output += `<testsuite package="org.eslint" time="0" tests="${messages.length}" errors="${messages.length}" name="${result.filePath}">\n`;
+            messages.forEach(message => {
+                const type = message.fatal ? "error" : "failure";
+
+                output += `<testcase time="0" name="org.eslint.${message.ruleId || "unknown"}" classname="${classname}">`;
+                output += `<${type} message="${xmlEscape(message.message || "")}">`;
+                output += "<![CDATA[";
+                output += `line ${message.line || 0}, col `;
+                output += `${message.column || 0}, ${getMessageType(message)}`;
+                output += ` - ${xmlEscape(message.message || "")}`;
+                output += (message.ruleId ? ` (${message.ruleId})` : "");
+                output += "]]>";
+                output += `</${type}>`;
+                output += "</testcase>\n";
+            });
+            output += "</testsuite>\n";
+        } else {
+            output += `<testsuite package="org.eslint" time="0" tests="1" errors="0" name="${result.filePath}">\n`;
+            output += `<testcase time="0" name="${result.filePath}" classname="${classname}" />\n`;
+            output += "</testsuite>\n";
+        }
+
+    });
+
+    output += "</testsuites>\n";
+
+    return output;
+};
Index: frontend/node_modules/eslint/lib/cli-engine/formatters/stylish.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/formatters/stylish.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/formatters/stylish.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,101 @@
+/**
+ * @fileoverview Stylish reporter
+ * @author Sindre Sorhus
+ */
+"use strict";
+
+const chalk = require("chalk"),
+    stripAnsi = require("strip-ansi"),
+    table = require("text-table");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Given a word and a count, append an s if count is not one.
+ * @param {string} word A word in its singular form.
+ * @param {int} count A number controlling whether word should be pluralized.
+ * @returns {string} The original word with an s on the end if count is not one.
+ */
+function pluralize(word, count) {
+    return (count === 1 ? word : `${word}s`);
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    let output = "\n",
+        errorCount = 0,
+        warningCount = 0,
+        fixableErrorCount = 0,
+        fixableWarningCount = 0,
+        summaryColor = "yellow";
+
+    results.forEach(result => {
+        const messages = result.messages;
+
+        if (messages.length === 0) {
+            return;
+        }
+
+        errorCount += result.errorCount;
+        warningCount += result.warningCount;
+        fixableErrorCount += result.fixableErrorCount;
+        fixableWarningCount += result.fixableWarningCount;
+
+        output += `${chalk.underline(result.filePath)}\n`;
+
+        output += `${table(
+            messages.map(message => {
+                let messageType;
+
+                if (message.fatal || message.severity === 2) {
+                    messageType = chalk.red("error");
+                    summaryColor = "red";
+                } else {
+                    messageType = chalk.yellow("warning");
+                }
+
+                return [
+                    "",
+                    message.line || 0,
+                    message.column || 0,
+                    messageType,
+                    message.message.replace(/([^ ])\.$/u, "$1"),
+                    chalk.dim(message.ruleId || "")
+                ];
+            }),
+            {
+                align: ["", "r", "l"],
+                stringLength(str) {
+                    return stripAnsi(str).length;
+                }
+            }
+        ).split("\n").map(el => el.replace(/(\d+)\s+(\d+)/u, (m, p1, p2) => chalk.dim(`${p1}:${p2}`))).join("\n")}\n\n`;
+    });
+
+    const total = errorCount + warningCount;
+
+    if (total > 0) {
+        output += chalk[summaryColor].bold([
+            "\u2716 ", total, pluralize(" problem", total),
+            " (", errorCount, pluralize(" error", errorCount), ", ",
+            warningCount, pluralize(" warning", warningCount), ")\n"
+        ].join(""));
+
+        if (fixableErrorCount > 0 || fixableWarningCount > 0) {
+            output += chalk[summaryColor].bold([
+                "  ", fixableErrorCount, pluralize(" error", fixableErrorCount), " and ",
+                fixableWarningCount, pluralize(" warning", fixableWarningCount),
+                " potentially fixable with the `--fix` option.\n"
+            ].join(""));
+        }
+    }
+
+    // Resets output color, for prevent change on top level
+    return total > 0 ? chalk.reset(output) : "";
+};
Index: frontend/node_modules/eslint/lib/cli-engine/formatters/tap.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/formatters/tap.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/formatters/tap.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,95 @@
+/**
+ * @fileoverview TAP reporter
+ * @author Jonathan Kingston
+ */
+"use strict";
+
+const yaml = require("js-yaml");
+
+//------------------------------------------------------------------------------
+// Helper Functions
+//------------------------------------------------------------------------------
+
+/**
+ * Returns a canonical error level string based upon the error message passed in.
+ * @param {Object} message Individual error message provided by eslint
+ * @returns {string} Error level string
+ */
+function getMessageType(message) {
+    if (message.fatal || message.severity === 2) {
+        return "error";
+    }
+    return "warning";
+}
+
+/**
+ * Takes in a JavaScript object and outputs a TAP diagnostics string
+ * @param {Object} diagnostic JavaScript object to be embedded as YAML into output.
+ * @returns {string} diagnostics string with YAML embedded - TAP version 13 compliant
+ */
+function outputDiagnostics(diagnostic) {
+    const prefix = "  ";
+    let output = `${prefix}---\n`;
+
+    output += prefix + yaml.dump(diagnostic).split("\n").join(`\n${prefix}`);
+    output += "...\n";
+    return output;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+    let output = `TAP version 13\n1..${results.length}\n`;
+
+    results.forEach((result, id) => {
+        const messages = result.messages;
+        let testResult = "ok";
+        let diagnostics = {};
+
+        if (messages.length > 0) {
+            messages.forEach(message => {
+                const severity = getMessageType(message);
+                const diagnostic = {
+                    message: message.message,
+                    severity,
+                    data: {
+                        line: message.line || 0,
+                        column: message.column || 0,
+                        ruleId: message.ruleId || ""
+                    }
+                };
+
+                // This ensures a warning message is not flagged as error
+                if (severity === "error") {
+                    testResult = "not ok";
+                }
+
+                /*
+                 * If we have multiple messages place them under a messages key
+                 * The first error will be logged as message key
+                 * This is to adhere to TAP 13 loosely defined specification of having a message key
+                 */
+                if ("message" in diagnostics) {
+                    if (typeof diagnostics.messages === "undefined") {
+                        diagnostics.messages = [];
+                    }
+                    diagnostics.messages.push(diagnostic);
+                } else {
+                    diagnostics = diagnostic;
+                }
+            });
+        }
+
+        output += `${testResult} ${id + 1} - ${result.filePath}\n`;
+
+        // If we have an error include diagnostics
+        if (messages.length > 0) {
+            output += outputDiagnostics(diagnostics);
+        }
+
+    });
+
+    return output;
+};
Index: frontend/node_modules/eslint/lib/cli-engine/formatters/unix.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/formatters/unix.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/formatters/unix.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,58 @@
+/**
+ * @fileoverview unix-style formatter.
+ * @author oshi-shinobu
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helper Functions
+//------------------------------------------------------------------------------
+
+/**
+ * Returns a canonical error level string based upon the error message passed in.
+ * @param {Object} message Individual error message provided by eslint
+ * @returns {string} Error level string
+ */
+function getMessageType(message) {
+    if (message.fatal || message.severity === 2) {
+        return "Error";
+    }
+    return "Warning";
+
+}
+
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    let output = "",
+        total = 0;
+
+    results.forEach(result => {
+
+        const messages = result.messages;
+
+        total += messages.length;
+
+        messages.forEach(message => {
+
+            output += `${result.filePath}:`;
+            output += `${message.line || 0}:`;
+            output += `${message.column || 0}:`;
+            output += ` ${message.message} `;
+            output += `[${getMessageType(message)}${message.ruleId ? `/${message.ruleId}` : ""}]`;
+            output += "\n";
+
+        });
+
+    });
+
+    if (total > 0) {
+        output += `\n${total} problem${total !== 1 ? "s" : ""}`;
+    }
+
+    return output;
+};
Index: frontend/node_modules/eslint/lib/cli-engine/formatters/visualstudio.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/formatters/visualstudio.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/formatters/visualstudio.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,63 @@
+/**
+ * @fileoverview Visual Studio compatible formatter
+ * @author Ronald Pijnacker
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helper Functions
+//------------------------------------------------------------------------------
+
+/**
+ * Returns the severity of warning or error
+ * @param {Object} message message object to examine
+ * @returns {string} severity level
+ * @private
+ */
+function getMessageType(message) {
+    if (message.fatal || message.severity === 2) {
+        return "error";
+    }
+    return "warning";
+
+}
+
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = function(results) {
+
+    let output = "",
+        total = 0;
+
+    results.forEach(result => {
+
+        const messages = result.messages;
+
+        total += messages.length;
+
+        messages.forEach(message => {
+
+            output += result.filePath;
+            output += `(${message.line || 0}`;
+            output += message.column ? `,${message.column}` : "";
+            output += `): ${getMessageType(message)}`;
+            output += message.ruleId ? ` ${message.ruleId}` : "";
+            output += ` : ${message.message}`;
+            output += "\n";
+
+        });
+
+    });
+
+    if (total === 0) {
+        output += "no problems";
+    } else {
+        output += `\n${total} problem${total !== 1 ? "s" : ""}`;
+    }
+
+    return output;
+};
Index: frontend/node_modules/eslint/lib/cli-engine/hash.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/hash.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/hash.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,35 @@
+/**
+ * @fileoverview Defining the hashing function in one place.
+ * @author Michael Ficarra
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const murmur = require("imurmurhash");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// Private
+//------------------------------------------------------------------------------
+
+/**
+ * hash the given string
+ * @param {string} str the string to hash
+ * @returns {string} the hash
+ */
+function hash(str) {
+    return murmur(str).result().toString(36);
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = hash;
Index: frontend/node_modules/eslint/lib/cli-engine/index.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,7 @@
+"use strict";
+
+const { CLIEngine } = require("./cli-engine");
+
+module.exports = {
+    CLIEngine
+};
Index: frontend/node_modules/eslint/lib/cli-engine/lint-result-cache.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/lint-result-cache.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/lint-result-cache.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,203 @@
+/**
+ * @fileoverview Utility for caching lint results.
+ * @author Kevin Partington
+ */
+"use strict";
+
+//-----------------------------------------------------------------------------
+// Requirements
+//-----------------------------------------------------------------------------
+
+const assert = require("assert");
+const fs = require("fs");
+const fileEntryCache = require("file-entry-cache");
+const stringify = require("json-stable-stringify-without-jsonify");
+const pkg = require("../../package.json");
+const hash = require("./hash");
+
+const debug = require("debug")("eslint:lint-result-cache");
+
+//-----------------------------------------------------------------------------
+// Helpers
+//-----------------------------------------------------------------------------
+
+const configHashCache = new WeakMap();
+const nodeVersion = process && process.version;
+
+const validCacheStrategies = ["metadata", "content"];
+const invalidCacheStrategyErrorMessage = `Cache strategy must be one of: ${validCacheStrategies
+    .map(strategy => `"${strategy}"`)
+    .join(", ")}`;
+
+/**
+ * Tests whether a provided cacheStrategy is valid
+ * @param {string} cacheStrategy The cache strategy to use
+ * @returns {boolean} true if `cacheStrategy` is one of `validCacheStrategies`; false otherwise
+ */
+function isValidCacheStrategy(cacheStrategy) {
+    return (
+        validCacheStrategies.includes(cacheStrategy)
+    );
+}
+
+/**
+ * Calculates the hash of the config
+ * @param {ConfigArray} config The config.
+ * @returns {string} The hash of the config
+ */
+function hashOfConfigFor(config) {
+    if (!configHashCache.has(config)) {
+        configHashCache.set(config, hash(`${pkg.version}_${nodeVersion}_${stringify(config)}`));
+    }
+
+    return configHashCache.get(config);
+}
+
+//-----------------------------------------------------------------------------
+// Public Interface
+//-----------------------------------------------------------------------------
+
+/**
+ * Lint result cache. This wraps around the file-entry-cache module,
+ * transparently removing properties that are difficult or expensive to
+ * serialize and adding them back in on retrieval.
+ */
+class LintResultCache {
+
+    /**
+     * Creates a new LintResultCache instance.
+     * @param {string} cacheFileLocation The cache file location.
+     * @param {"metadata" | "content"} cacheStrategy The cache strategy to use.
+     */
+    constructor(cacheFileLocation, cacheStrategy) {
+        assert(cacheFileLocation, "Cache file location is required");
+        assert(cacheStrategy, "Cache strategy is required");
+        assert(
+            isValidCacheStrategy(cacheStrategy),
+            invalidCacheStrategyErrorMessage
+        );
+
+        debug(`Caching results to ${cacheFileLocation}`);
+
+        const useChecksum = cacheStrategy === "content";
+
+        debug(
+            `Using "${cacheStrategy}" strategy to detect changes`
+        );
+
+        this.fileEntryCache = fileEntryCache.create(
+            cacheFileLocation,
+            void 0,
+            useChecksum
+        );
+        this.cacheFileLocation = cacheFileLocation;
+    }
+
+    /**
+     * Retrieve cached lint results for a given file path, if present in the
+     * cache. If the file is present and has not been changed, rebuild any
+     * missing result information.
+     * @param {string} filePath The file for which to retrieve lint results.
+     * @param {ConfigArray} config The config of the file.
+     * @returns {Object|null} The rebuilt lint results, or null if the file is
+     *   changed or not in the filesystem.
+     */
+    getCachedLintResults(filePath, config) {
+
+        /*
+         * Cached lint results are valid if and only if:
+         * 1. The file is present in the filesystem
+         * 2. The file has not changed since the time it was previously linted
+         * 3. The ESLint configuration has not changed since the time the file
+         *    was previously linted
+         * If any of these are not true, we will not reuse the lint results.
+         */
+        const fileDescriptor = this.fileEntryCache.getFileDescriptor(filePath);
+        const hashOfConfig = hashOfConfigFor(config);
+        const changed =
+            fileDescriptor.changed ||
+            fileDescriptor.meta.hashOfConfig !== hashOfConfig;
+
+        if (fileDescriptor.notFound) {
+            debug(`File not found on the file system: ${filePath}`);
+            return null;
+        }
+
+        if (changed) {
+            debug(`Cache entry not found or no longer valid: ${filePath}`);
+            return null;
+        }
+
+        const cachedResults = fileDescriptor.meta.results;
+
+        // Just in case, not sure if this can ever happen.
+        if (!cachedResults) {
+            return cachedResults;
+        }
+
+        /*
+         * Shallow clone the object to ensure that any properties added or modified afterwards
+         * will not be accidentally stored in the cache file when `reconcile()` is called.
+         * https://github.com/eslint/eslint/issues/13507
+         * All intentional changes to the cache file must be done through `setCachedLintResults()`.
+         */
+        const results = { ...cachedResults };
+
+        // If source is present but null, need to reread the file from the filesystem.
+        if (results.source === null) {
+            debug(`Rereading cached result source from filesystem: ${filePath}`);
+            results.source = fs.readFileSync(filePath, "utf-8");
+        }
+
+        return results;
+    }
+
+    /**
+     * Set the cached lint results for a given file path, after removing any
+     * information that will be both unnecessary and difficult to serialize.
+     * Avoids caching results with an "output" property (meaning fixes were
+     * applied), to prevent potentially incorrect results if fixes are not
+     * written to disk.
+     * @param {string} filePath The file for which to set lint results.
+     * @param {ConfigArray} config The config of the file.
+     * @param {Object} result The lint result to be set for the file.
+     * @returns {void}
+     */
+    setCachedLintResults(filePath, config, result) {
+        if (result && Object.prototype.hasOwnProperty.call(result, "output")) {
+            return;
+        }
+
+        const fileDescriptor = this.fileEntryCache.getFileDescriptor(filePath);
+
+        if (fileDescriptor && !fileDescriptor.notFound) {
+            debug(`Updating cached result: ${filePath}`);
+
+            // Serialize the result, except that we want to remove the file source if present.
+            const resultToSerialize = Object.assign({}, result);
+
+            /*
+             * Set result.source to null.
+             * In `getCachedLintResults`, if source is explicitly null, we will
+             * read the file from the filesystem to set the value again.
+             */
+            if (Object.prototype.hasOwnProperty.call(resultToSerialize, "source")) {
+                resultToSerialize.source = null;
+            }
+
+            fileDescriptor.meta.results = resultToSerialize;
+            fileDescriptor.meta.hashOfConfig = hashOfConfigFor(config);
+        }
+    }
+
+    /**
+     * Persists the in-memory cache to disk.
+     * @returns {void}
+     */
+    reconcile() {
+        debug(`Persisting cached results: ${this.cacheFileLocation}`);
+        this.fileEntryCache.reconcile();
+    }
+}
+
+module.exports = LintResultCache;
Index: frontend/node_modules/eslint/lib/cli-engine/load-rules.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/load-rules.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/load-rules.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,46 @@
+/**
+ * @fileoverview Module for loading rules from files and directories.
+ * @author Michael Ficarra
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const fs = require("fs"),
+    path = require("path");
+
+const rulesDirCache = {};
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * Load all rule modules from specified directory.
+ * @param {string} relativeRulesDir Path to rules directory, may be relative.
+ * @param {string} cwd Current working directory
+ * @returns {Object} Loaded rule modules.
+ */
+module.exports = function(relativeRulesDir, cwd) {
+    const rulesDir = path.resolve(cwd, relativeRulesDir);
+
+    // cache will help performance as IO operation are expensive
+    if (rulesDirCache[rulesDir]) {
+        return rulesDirCache[rulesDir];
+    }
+
+    const rules = Object.create(null);
+
+    fs.readdirSync(rulesDir).forEach(file => {
+        if (path.extname(file) !== ".js") {
+            return;
+        }
+        rules[file.slice(0, -3)] = require(path.join(rulesDir, file));
+    });
+    rulesDirCache[rulesDir] = rules;
+
+    return rules;
+};
Index: frontend/node_modules/eslint/lib/cli-engine/xml-escape.js
===================================================================
--- frontend/node_modules/eslint/lib/cli-engine/xml-escape.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli-engine/xml-escape.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,34 @@
+/**
+ * @fileoverview XML character escaper
+ * @author George Chung
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * Returns the escaped value for a character
+ * @param {string} s string to examine
+ * @returns {string} severity level
+ * @private
+ */
+module.exports = function(s) {
+    return (`${s}`).replace(/[<>&"'\x00-\x1F\x7F\u0080-\uFFFF]/gu, c => { // eslint-disable-line no-control-regex -- Converting controls to entities
+        switch (c) {
+            case "<":
+                return "&lt;";
+            case ">":
+                return "&gt;";
+            case "&":
+                return "&amp;";
+            case "\"":
+                return "&quot;";
+            case "'":
+                return "&apos;";
+            default:
+                return `&#${c.charCodeAt(0)};`;
+        }
+    });
+};
Index: frontend/node_modules/eslint/lib/cli.js
===================================================================
--- frontend/node_modules/eslint/lib/cli.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/cli.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,471 @@
+/**
+ * @fileoverview Main CLI object.
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+/*
+ * NOTE: The CLI object should *not* call process.exit() directly. It should only return
+ * exit codes. This allows other programs to use the CLI object and still control
+ * when the program exits.
+ */
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const fs = require("fs"),
+    path = require("path"),
+    { promisify } = require("util"),
+    { ESLint } = require("./eslint"),
+    { FlatESLint, shouldUseFlatConfig } = require("./eslint/flat-eslint"),
+    createCLIOptions = require("./options"),
+    log = require("./shared/logging"),
+    RuntimeInfo = require("./shared/runtime-info"),
+    { normalizeSeverityToString } = require("./shared/severity");
+const { Legacy: { naming } } = require("@eslint/eslintrc");
+const { ModuleImporter } = require("@humanwhocodes/module-importer");
+
+const debug = require("debug")("eslint:cli");
+
+//------------------------------------------------------------------------------
+// Types
+//------------------------------------------------------------------------------
+
+/** @typedef {import("./eslint/eslint").ESLintOptions} ESLintOptions */
+/** @typedef {import("./eslint/eslint").LintMessage} LintMessage */
+/** @typedef {import("./eslint/eslint").LintResult} LintResult */
+/** @typedef {import("./options").ParsedCLIOptions} ParsedCLIOptions */
+/** @typedef {import("./shared/types").ResultsMeta} ResultsMeta */
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const mkdir = promisify(fs.mkdir);
+const stat = promisify(fs.stat);
+const writeFile = promisify(fs.writeFile);
+
+/**
+ * Predicate function for whether or not to apply fixes in quiet mode.
+ * If a message is a warning, do not apply a fix.
+ * @param {LintMessage} message The lint result.
+ * @returns {boolean} True if the lint message is an error (and thus should be
+ * autofixed), false otherwise.
+ */
+function quietFixPredicate(message) {
+    return message.severity === 2;
+}
+
+/**
+ * Translates the CLI options into the options expected by the ESLint constructor.
+ * @param {ParsedCLIOptions} cliOptions The CLI options to translate.
+ * @param {"flat"|"eslintrc"} [configType="eslintrc"] The format of the
+ *      config to generate.
+ * @returns {Promise<ESLintOptions>} The options object for the ESLint constructor.
+ * @private
+ */
+async function translateOptions({
+    cache,
+    cacheFile,
+    cacheLocation,
+    cacheStrategy,
+    config,
+    configLookup,
+    env,
+    errorOnUnmatchedPattern,
+    eslintrc,
+    ext,
+    fix,
+    fixDryRun,
+    fixType,
+    global,
+    ignore,
+    ignorePath,
+    ignorePattern,
+    inlineConfig,
+    parser,
+    parserOptions,
+    plugin,
+    quiet,
+    reportUnusedDisableDirectives,
+    reportUnusedDisableDirectivesSeverity,
+    resolvePluginsRelativeTo,
+    rule,
+    rulesdir,
+    warnIgnored
+}, configType) {
+
+    let overrideConfig, overrideConfigFile;
+    const importer = new ModuleImporter();
+
+    if (configType === "flat") {
+        overrideConfigFile = (typeof config === "string") ? config : !configLookup;
+        if (overrideConfigFile === false) {
+            overrideConfigFile = void 0;
+        }
+
+        let globals = {};
+
+        if (global) {
+            globals = global.reduce((obj, name) => {
+                if (name.endsWith(":true")) {
+                    obj[name.slice(0, -5)] = "writable";
+                } else {
+                    obj[name] = "readonly";
+                }
+                return obj;
+            }, globals);
+        }
+
+        overrideConfig = [{
+            languageOptions: {
+                globals,
+                parserOptions: parserOptions || {}
+            },
+            rules: rule ? rule : {}
+        }];
+
+        if (reportUnusedDisableDirectives || reportUnusedDisableDirectivesSeverity !== void 0) {
+            overrideConfig[0].linterOptions = {
+                reportUnusedDisableDirectives: reportUnusedDisableDirectives
+                    ? "error"
+                    : normalizeSeverityToString(reportUnusedDisableDirectivesSeverity)
+            };
+        }
+
+        if (parser) {
+            overrideConfig[0].languageOptions.parser = await importer.import(parser);
+        }
+
+        if (plugin) {
+            const plugins = {};
+
+            for (const pluginName of plugin) {
+
+                const shortName = naming.getShorthandName(pluginName, "eslint-plugin");
+                const longName = naming.normalizePackageName(pluginName, "eslint-plugin");
+
+                plugins[shortName] = await importer.import(longName);
+            }
+
+            overrideConfig[0].plugins = plugins;
+        }
+
+    } else {
+        overrideConfigFile = config;
+
+        overrideConfig = {
+            env: env && env.reduce((obj, name) => {
+                obj[name] = true;
+                return obj;
+            }, {}),
+            globals: global && global.reduce((obj, name) => {
+                if (name.endsWith(":true")) {
+                    obj[name.slice(0, -5)] = "writable";
+                } else {
+                    obj[name] = "readonly";
+                }
+                return obj;
+            }, {}),
+            ignorePatterns: ignorePattern,
+            parser,
+            parserOptions,
+            plugins: plugin,
+            rules: rule
+        };
+    }
+
+    const options = {
+        allowInlineConfig: inlineConfig,
+        cache,
+        cacheLocation: cacheLocation || cacheFile,
+        cacheStrategy,
+        errorOnUnmatchedPattern,
+        fix: (fix || fixDryRun) && (quiet ? quietFixPredicate : true),
+        fixTypes: fixType,
+        ignore,
+        overrideConfig,
+        overrideConfigFile
+    };
+
+    if (configType === "flat") {
+        options.ignorePatterns = ignorePattern;
+        options.warnIgnored = warnIgnored;
+    } else {
+        options.resolvePluginsRelativeTo = resolvePluginsRelativeTo;
+        options.rulePaths = rulesdir;
+        options.useEslintrc = eslintrc;
+        options.extensions = ext;
+        options.ignorePath = ignorePath;
+        if (reportUnusedDisableDirectives || reportUnusedDisableDirectivesSeverity !== void 0) {
+            options.reportUnusedDisableDirectives = reportUnusedDisableDirectives
+                ? "error"
+                : normalizeSeverityToString(reportUnusedDisableDirectivesSeverity);
+        }
+    }
+
+    return options;
+}
+
+/**
+ * Count error messages.
+ * @param {LintResult[]} results The lint results.
+ * @returns {{errorCount:number;fatalErrorCount:number,warningCount:number}} The number of error messages.
+ */
+function countErrors(results) {
+    let errorCount = 0;
+    let fatalErrorCount = 0;
+    let warningCount = 0;
+
+    for (const result of results) {
+        errorCount += result.errorCount;
+        fatalErrorCount += result.fatalErrorCount;
+        warningCount += result.warningCount;
+    }
+
+    return { errorCount, fatalErrorCount, warningCount };
+}
+
+/**
+ * Check if a given file path is a directory or not.
+ * @param {string} filePath The path to a file to check.
+ * @returns {Promise<boolean>} `true` if the given path is a directory.
+ */
+async function isDirectory(filePath) {
+    try {
+        return (await stat(filePath)).isDirectory();
+    } catch (error) {
+        if (error.code === "ENOENT" || error.code === "ENOTDIR") {
+            return false;
+        }
+        throw error;
+    }
+}
+
+/**
+ * Outputs the results of the linting.
+ * @param {ESLint} engine The ESLint instance to use.
+ * @param {LintResult[]} results The results to print.
+ * @param {string} format The name of the formatter to use or the path to the formatter.
+ * @param {string} outputFile The path for the output file.
+ * @param {ResultsMeta} resultsMeta Warning count and max threshold.
+ * @returns {Promise<boolean>} True if the printing succeeds, false if not.
+ * @private
+ */
+async function printResults(engine, results, format, outputFile, resultsMeta) {
+    let formatter;
+
+    try {
+        formatter = await engine.loadFormatter(format);
+    } catch (e) {
+        log.error(e.message);
+        return false;
+    }
+
+    const output = await formatter.format(results, resultsMeta);
+
+    if (output) {
+        if (outputFile) {
+            const filePath = path.resolve(process.cwd(), outputFile);
+
+            if (await isDirectory(filePath)) {
+                log.error("Cannot write to output file path, it is a directory: %s", outputFile);
+                return false;
+            }
+
+            try {
+                await mkdir(path.dirname(filePath), { recursive: true });
+                await writeFile(filePath, output);
+            } catch (ex) {
+                log.error("There was a problem writing the output file:\n%s", ex);
+                return false;
+            }
+        } else {
+            log.info(output);
+        }
+    }
+
+    return true;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * Encapsulates all CLI behavior for eslint. Makes it easier to test as well as
+ * for other Node.js programs to effectively run the CLI.
+ */
+const cli = {
+
+    /**
+     * Executes the CLI based on an array of arguments that is passed in.
+     * @param {string|Array|Object} args The arguments to process.
+     * @param {string} [text] The text to lint (used for TTY).
+     * @param {boolean} [allowFlatConfig] Whether or not to allow flat config.
+     * @returns {Promise<number>} The exit code for the operation.
+     */
+    async execute(args, text, allowFlatConfig) {
+        if (Array.isArray(args)) {
+            debug("CLI args: %o", args.slice(2));
+        }
+
+        /*
+         * Before doing anything, we need to see if we are using a
+         * flat config file. If so, then we need to change the way command
+         * line args are parsed. This is temporary, and when we fully
+         * switch to flat config we can remove this logic.
+         */
+
+        const usingFlatConfig = allowFlatConfig && await shouldUseFlatConfig();
+
+        debug("Using flat config?", usingFlatConfig);
+
+        const CLIOptions = createCLIOptions(usingFlatConfig);
+
+        /** @type {ParsedCLIOptions} */
+        let options;
+
+        try {
+            options = CLIOptions.parse(args);
+        } catch (error) {
+            debug("Error parsing CLI options:", error.message);
+
+            let errorMessage = error.message;
+
+            if (usingFlatConfig) {
+                errorMessage += "\nYou're using eslint.config.js, some command line flags are no longer available. Please see https://eslint.org/docs/latest/use/command-line-interface for details.";
+            }
+
+            log.error(errorMessage);
+            return 2;
+        }
+
+        const files = options._;
+        const useStdin = typeof text === "string";
+
+        if (options.help) {
+            log.info(CLIOptions.generateHelp());
+            return 0;
+        }
+        if (options.version) {
+            log.info(RuntimeInfo.version());
+            return 0;
+        }
+        if (options.envInfo) {
+            try {
+                log.info(RuntimeInfo.environment());
+                return 0;
+            } catch (err) {
+                debug("Error retrieving environment info");
+                log.error(err.message);
+                return 2;
+            }
+        }
+
+        if (options.printConfig) {
+            if (files.length) {
+                log.error("The --print-config option must be used with exactly one file name.");
+                return 2;
+            }
+            if (useStdin) {
+                log.error("The --print-config option is not available for piped-in code.");
+                return 2;
+            }
+
+            const engine = usingFlatConfig
+                ? new FlatESLint(await translateOptions(options, "flat"))
+                : new ESLint(await translateOptions(options));
+            const fileConfig =
+                await engine.calculateConfigForFile(options.printConfig);
+
+            log.info(JSON.stringify(fileConfig, null, "  "));
+            return 0;
+        }
+
+        debug(`Running on ${useStdin ? "text" : "files"}`);
+
+        if (options.fix && options.fixDryRun) {
+            log.error("The --fix option and the --fix-dry-run option cannot be used together.");
+            return 2;
+        }
+        if (useStdin && options.fix) {
+            log.error("The --fix option is not available for piped-in code; use --fix-dry-run instead.");
+            return 2;
+        }
+        if (options.fixType && !options.fix && !options.fixDryRun) {
+            log.error("The --fix-type option requires either --fix or --fix-dry-run.");
+            return 2;
+        }
+
+        if (options.reportUnusedDisableDirectives && options.reportUnusedDisableDirectivesSeverity !== void 0) {
+            log.error("The --report-unused-disable-directives option and the --report-unused-disable-directives-severity option cannot be used together.");
+            return 2;
+        }
+
+        const ActiveESLint = usingFlatConfig ? FlatESLint : ESLint;
+
+        const engine = new ActiveESLint(await translateOptions(options, usingFlatConfig ? "flat" : "eslintrc"));
+        let results;
+
+        if (useStdin) {
+            results = await engine.lintText(text, {
+                filePath: options.stdinFilename,
+
+                // flatConfig respects CLI flag and constructor warnIgnored, eslintrc forces true for backwards compatibility
+                warnIgnored: usingFlatConfig ? void 0 : true
+            });
+        } else {
+            results = await engine.lintFiles(files);
+        }
+
+        if (options.fix) {
+            debug("Fix mode enabled - applying fixes");
+            await ActiveESLint.outputFixes(results);
+        }
+
+        let resultsToPrint = results;
+
+        if (options.quiet) {
+            debug("Quiet mode enabled - filtering out warnings");
+            resultsToPrint = ActiveESLint.getErrorResults(resultsToPrint);
+        }
+
+        const resultCounts = countErrors(results);
+        const tooManyWarnings = options.maxWarnings >= 0 && resultCounts.warningCount > options.maxWarnings;
+        const resultsMeta = tooManyWarnings
+            ? {
+                maxWarningsExceeded: {
+                    maxWarnings: options.maxWarnings,
+                    foundWarnings: resultCounts.warningCount
+                }
+            }
+            : {};
+
+        if (await printResults(engine, resultsToPrint, options.format, options.outputFile, resultsMeta)) {
+
+            // Errors and warnings from the original unfiltered results should determine the exit code
+            const shouldExitForFatalErrors =
+                options.exitOnFatalError && resultCounts.fatalErrorCount > 0;
+
+            if (!resultCounts.errorCount && tooManyWarnings) {
+                log.error(
+                    "ESLint found too many warnings (maximum: %s).",
+                    options.maxWarnings
+                );
+            }
+
+            if (shouldExitForFatalErrors) {
+                return 2;
+            }
+
+            return (resultCounts.errorCount || tooManyWarnings) ? 1 : 0;
+        }
+
+        return 2;
+    }
+};
+
+module.exports = cli;
Index: frontend/node_modules/eslint/lib/config/default-config.js
===================================================================
--- frontend/node_modules/eslint/lib/config/default-config.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/config/default-config.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,67 @@
+/**
+ * @fileoverview Default configuration
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//-----------------------------------------------------------------------------
+// Requirements
+//-----------------------------------------------------------------------------
+
+const Rules = require("../rules");
+
+//-----------------------------------------------------------------------------
+// Helpers
+//-----------------------------------------------------------------------------
+
+exports.defaultConfig = [
+    {
+        plugins: {
+            "@": {
+
+                /*
+                 * Because we try to delay loading rules until absolutely
+                 * necessary, a proxy allows us to hook into the lazy-loading
+                 * aspect of the rules map while still keeping all of the
+                 * relevant configuration inside of the config array.
+                 */
+                rules: new Proxy({}, {
+                    get(target, property) {
+                        return Rules.get(property);
+                    },
+
+                    has(target, property) {
+                        return Rules.has(property);
+                    }
+                })
+            }
+        },
+        languageOptions: {
+            sourceType: "module",
+            ecmaVersion: "latest",
+            parser: require("espree"),
+            parserOptions: {}
+        }
+    },
+
+    // default ignores are listed here
+    {
+        ignores: [
+            "**/node_modules/",
+            ".git/"
+        ]
+    },
+
+    // intentionally empty config to ensure these files are globbed by default
+    {
+        files: ["**/*.js", "**/*.mjs"]
+    },
+    {
+        files: ["**/*.cjs"],
+        languageOptions: {
+            sourceType: "commonjs",
+            ecmaVersion: "latest"
+        }
+    }
+];
Index: frontend/node_modules/eslint/lib/config/flat-config-array.js
===================================================================
--- frontend/node_modules/eslint/lib/config/flat-config-array.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/config/flat-config-array.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,380 @@
+/**
+ * @fileoverview Flat Config Array
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//-----------------------------------------------------------------------------
+// Requirements
+//-----------------------------------------------------------------------------
+
+const { ConfigArray, ConfigArraySymbol } = require("@humanwhocodes/config-array");
+const { flatConfigSchema } = require("./flat-config-schema");
+const { RuleValidator } = require("./rule-validator");
+const { defaultConfig } = require("./default-config");
+const jsPlugin = require("@eslint/js");
+
+//-----------------------------------------------------------------------------
+// Helpers
+//-----------------------------------------------------------------------------
+
+/**
+ * Fields that are considered metadata and not part of the config object.
+ */
+const META_FIELDS = new Set(["name"]);
+
+const ruleValidator = new RuleValidator();
+
+/**
+ * Splits a plugin identifier in the form a/b/c into two parts: a/b and c.
+ * @param {string} identifier The identifier to parse.
+ * @returns {{objectName: string, pluginName: string}} The parts of the plugin
+ *      name.
+ */
+function splitPluginIdentifier(identifier) {
+    const parts = identifier.split("/");
+
+    return {
+        objectName: parts.pop(),
+        pluginName: parts.join("/")
+    };
+}
+
+/**
+ * Returns the name of an object in the config by reading its `meta` key.
+ * @param {Object} object The object to check.
+ * @returns {string?} The name of the object if found or `null` if there
+ *      is no name.
+ */
+function getObjectId(object) {
+
+    // first check old-style name
+    let name = object.name;
+
+    if (!name) {
+
+        if (!object.meta) {
+            return null;
+        }
+
+        name = object.meta.name;
+
+        if (!name) {
+            return null;
+        }
+    }
+
+    // now check for old-style version
+    let version = object.version;
+
+    if (!version) {
+        version = object.meta && object.meta.version;
+    }
+
+    // if there's a version then append that
+    if (version) {
+        return `${name}@${version}`;
+    }
+
+    return name;
+}
+
+/**
+ * Wraps a config error with details about where the error occurred.
+ * @param {Error} error The original error.
+ * @param {number} originalLength The original length of the config array.
+ * @param {number} baseLength The length of the base config.
+ * @returns {TypeError} The new error with details.
+ */
+function wrapConfigErrorWithDetails(error, originalLength, baseLength) {
+
+    let location = "user-defined";
+    let configIndex = error.index;
+
+    /*
+     * A config array is set up in this order:
+     * 1. Base config
+     * 2. Original configs
+     * 3. User-defined configs
+     * 4. CLI-defined configs
+     *
+     * So we need to adjust the index to account for the base config.
+     *
+     * - If the index is less than the base length, it's in the base config
+     *   (as specified by `baseConfig` argument to `FlatConfigArray` constructor).
+     * - If the index is greater than the base length but less than the original
+     *   length + base length, it's in the original config. The original config
+     *   is passed to the `FlatConfigArray` constructor as the first argument.
+     * - Otherwise, it's in the user-defined config, which is loaded from the
+     *   config file and merged with any command-line options.
+     */
+    if (error.index < baseLength) {
+        location = "base";
+    } else if (error.index < originalLength + baseLength) {
+        location = "original";
+        configIndex = error.index - baseLength;
+    } else {
+        configIndex = error.index - originalLength - baseLength;
+    }
+
+    return new TypeError(
+        `${error.message.slice(0, -1)} at ${location} index ${configIndex}.`,
+        { cause: error }
+    );
+}
+
+const originalBaseConfig = Symbol("originalBaseConfig");
+const originalLength = Symbol("originalLength");
+const baseLength = Symbol("baseLength");
+
+//-----------------------------------------------------------------------------
+// Exports
+//-----------------------------------------------------------------------------
+
+/**
+ * Represents an array containing configuration information for ESLint.
+ */
+class FlatConfigArray extends ConfigArray {
+
+    /**
+     * Creates a new instance.
+     * @param {*[]} configs An array of configuration information.
+     * @param {{basePath: string, shouldIgnore: boolean, baseConfig: FlatConfig}} options The options
+     *      to use for the config array instance.
+     */
+    constructor(configs, {
+        basePath,
+        shouldIgnore = true,
+        baseConfig = defaultConfig
+    } = {}) {
+        super(configs, {
+            basePath,
+            schema: flatConfigSchema
+        });
+
+        /**
+         * The original length of the array before any modifications.
+         * @type {number}
+         */
+        this[originalLength] = this.length;
+
+        if (baseConfig[Symbol.iterator]) {
+            this.unshift(...baseConfig);
+        } else {
+            this.unshift(baseConfig);
+        }
+
+        /**
+         * The length of the array after applying the base config.
+         * @type {number}
+         */
+        this[baseLength] = this.length - this[originalLength];
+
+        /**
+         * The base config used to build the config array.
+         * @type {Array<FlatConfig>}
+         */
+        this[originalBaseConfig] = baseConfig;
+        Object.defineProperty(this, originalBaseConfig, { writable: false });
+
+        /**
+         * Determines if `ignores` fields should be honored.
+         * If true, then all `ignores` fields are honored.
+         * if false, then only `ignores` fields in the baseConfig are honored.
+         * @type {boolean}
+         */
+        this.shouldIgnore = shouldIgnore;
+        Object.defineProperty(this, "shouldIgnore", { writable: false });
+    }
+
+    /**
+     * Normalizes the array by calling the superclass method and catching/rethrowing
+     * any ConfigError exceptions with additional details.
+     * @param {any} [context] The context to use to normalize the array.
+     * @returns {Promise<FlatConfigArray>} A promise that resolves when the array is normalized.
+     */
+    normalize(context) {
+        return super.normalize(context)
+            .catch(error => {
+                if (error.name === "ConfigError") {
+                    throw wrapConfigErrorWithDetails(error, this[originalLength], this[baseLength]);
+                }
+
+                throw error;
+
+            });
+    }
+
+    /**
+     * Normalizes the array by calling the superclass method and catching/rethrowing
+     * any ConfigError exceptions with additional details.
+     * @param {any} [context] The context to use to normalize the array.
+     * @returns {FlatConfigArray} The current instance.
+     * @throws {TypeError} If the config is invalid.
+     */
+    normalizeSync(context) {
+
+        try {
+
+            return super.normalizeSync(context);
+
+        } catch (error) {
+
+            if (error.name === "ConfigError") {
+                throw wrapConfigErrorWithDetails(error, this[originalLength], this[baseLength]);
+            }
+
+            throw error;
+
+        }
+
+    }
+
+    /* eslint-disable class-methods-use-this -- Desired as instance method */
+    /**
+     * Replaces a config with another config to allow us to put strings
+     * in the config array that will be replaced by objects before
+     * normalization.
+     * @param {Object} config The config to preprocess.
+     * @returns {Object} The preprocessed config.
+     */
+    [ConfigArraySymbol.preprocessConfig](config) {
+        if (config === "eslint:recommended") {
+
+            // if we are in a Node.js environment warn the user
+            if (typeof process !== "undefined" && process.emitWarning) {
+                process.emitWarning("The 'eslint:recommended' string configuration is deprecated and will be replaced by the @eslint/js package's 'recommended' config.");
+            }
+
+            return jsPlugin.configs.recommended;
+        }
+
+        if (config === "eslint:all") {
+
+            // if we are in a Node.js environment warn the user
+            if (typeof process !== "undefined" && process.emitWarning) {
+                process.emitWarning("The 'eslint:all' string configuration is deprecated and will be replaced by the @eslint/js package's 'all' config.");
+            }
+
+            return jsPlugin.configs.all;
+        }
+
+        /*
+         * If a config object has `ignores` and no other non-meta fields, then it's an object
+         * for global ignores. If `shouldIgnore` is false, that object shouldn't apply,
+         * so we'll remove its `ignores`.
+         */
+        if (
+            !this.shouldIgnore &&
+            !this[originalBaseConfig].includes(config) &&
+            config.ignores &&
+            Object.keys(config).filter(key => !META_FIELDS.has(key)).length === 1
+        ) {
+            /* eslint-disable-next-line no-unused-vars -- need to strip off other keys */
+            const { ignores, ...otherKeys } = config;
+
+            return otherKeys;
+        }
+
+        return config;
+    }
+
+    /**
+     * Finalizes the config by replacing plugin references with their objects
+     * and validating rule option schemas.
+     * @param {Object} config The config to finalize.
+     * @returns {Object} The finalized config.
+     * @throws {TypeError} If the config is invalid.
+     */
+    [ConfigArraySymbol.finalizeConfig](config) {
+
+        const { plugins, languageOptions, processor } = config;
+        let parserName, processorName;
+        let invalidParser = false,
+            invalidProcessor = false;
+
+        // Check parser value
+        if (languageOptions && languageOptions.parser) {
+            const { parser } = languageOptions;
+
+            if (typeof parser === "object") {
+                parserName = getObjectId(parser);
+
+                if (!parserName) {
+                    invalidParser = true;
+                }
+
+            } else {
+                invalidParser = true;
+            }
+        }
+
+        // Check processor value
+        if (processor) {
+            if (typeof processor === "string") {
+                const { pluginName, objectName: localProcessorName } = splitPluginIdentifier(processor);
+
+                processorName = processor;
+
+                if (!plugins || !plugins[pluginName] || !plugins[pluginName].processors || !plugins[pluginName].processors[localProcessorName]) {
+                    throw new TypeError(`Key "processor": Could not find "${localProcessorName}" in plugin "${pluginName}".`);
+                }
+
+                config.processor = plugins[pluginName].processors[localProcessorName];
+            } else if (typeof processor === "object") {
+                processorName = getObjectId(processor);
+
+                if (!processorName) {
+                    invalidProcessor = true;
+                }
+
+            } else {
+                invalidProcessor = true;
+            }
+        }
+
+        ruleValidator.validate(config);
+
+        // apply special logic for serialization into JSON
+        /* eslint-disable object-shorthand -- shorthand would change "this" value */
+        Object.defineProperty(config, "toJSON", {
+            value: function() {
+
+                if (invalidParser) {
+                    throw new Error("Could not serialize parser object (missing 'meta' object).");
+                }
+
+                if (invalidProcessor) {
+                    throw new Error("Could not serialize processor object (missing 'meta' object).");
+                }
+
+                return {
+                    ...this,
+                    plugins: Object.entries(plugins).map(([namespace, plugin]) => {
+
+                        const pluginId = getObjectId(plugin);
+
+                        if (!pluginId) {
+                            return namespace;
+                        }
+
+                        return `${namespace}:${pluginId}`;
+                    }),
+                    languageOptions: {
+                        ...languageOptions,
+                        parser: parserName
+                    },
+                    processor: processorName
+                };
+            }
+        });
+        /* eslint-enable object-shorthand -- ok to enable now */
+
+        return config;
+    }
+    /* eslint-enable class-methods-use-this -- Desired as instance method */
+
+}
+
+exports.FlatConfigArray = FlatConfigArray;
Index: frontend/node_modules/eslint/lib/config/flat-config-helpers.js
===================================================================
--- frontend/node_modules/eslint/lib/config/flat-config-helpers.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/config/flat-config-helpers.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,111 @@
+/**
+ * @fileoverview Shared functions to work with configs.
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//-----------------------------------------------------------------------------
+// Functions
+//-----------------------------------------------------------------------------
+
+/**
+ * Parses a ruleId into its plugin and rule parts.
+ * @param {string} ruleId The rule ID to parse.
+ * @returns {{pluginName:string,ruleName:string}} The plugin and rule
+ *      parts of the ruleId;
+ */
+function parseRuleId(ruleId) {
+    let pluginName, ruleName;
+
+    // distinguish between core rules and plugin rules
+    if (ruleId.includes("/")) {
+
+        // mimic scoped npm packages
+        if (ruleId.startsWith("@")) {
+            pluginName = ruleId.slice(0, ruleId.lastIndexOf("/"));
+        } else {
+            pluginName = ruleId.slice(0, ruleId.indexOf("/"));
+        }
+
+        ruleName = ruleId.slice(pluginName.length + 1);
+    } else {
+        pluginName = "@";
+        ruleName = ruleId;
+    }
+
+    return {
+        pluginName,
+        ruleName
+    };
+}
+
+/**
+ * Retrieves a rule instance from a given config based on the ruleId.
+ * @param {string} ruleId The rule ID to look for.
+ * @param {FlatConfig} config The config to search.
+ * @returns {import("../shared/types").Rule|undefined} The rule if found
+ *      or undefined if not.
+ */
+function getRuleFromConfig(ruleId, config) {
+
+    const { pluginName, ruleName } = parseRuleId(ruleId);
+
+    const plugin = config.plugins && config.plugins[pluginName];
+    let rule = plugin && plugin.rules && plugin.rules[ruleName];
+
+
+    // normalize function rules into objects
+    if (rule && typeof rule === "function") {
+        rule = {
+            create: rule
+        };
+    }
+
+    return rule;
+}
+
+/**
+ * Gets a complete options schema for a rule.
+ * @param {{create: Function, schema: (Array|null)}} rule A new-style rule object
+ * @returns {Object} JSON Schema for the rule's options.
+ */
+function getRuleOptionsSchema(rule) {
+
+    if (!rule) {
+        return null;
+    }
+
+    const schema = rule.schema || rule.meta && rule.meta.schema;
+
+    if (Array.isArray(schema)) {
+        if (schema.length) {
+            return {
+                type: "array",
+                items: schema,
+                minItems: 0,
+                maxItems: schema.length
+            };
+        }
+        return {
+            type: "array",
+            minItems: 0,
+            maxItems: 0
+        };
+
+    }
+
+    // Given a full schema, leave it alone
+    return schema || null;
+}
+
+
+//-----------------------------------------------------------------------------
+// Exports
+//-----------------------------------------------------------------------------
+
+module.exports = {
+    parseRuleId,
+    getRuleFromConfig,
+    getRuleOptionsSchema
+};
Index: frontend/node_modules/eslint/lib/config/flat-config-schema.js
===================================================================
--- frontend/node_modules/eslint/lib/config/flat-config-schema.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/config/flat-config-schema.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,598 @@
+/**
+ * @fileoverview Flat config schema
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//-----------------------------------------------------------------------------
+// Requirements
+//-----------------------------------------------------------------------------
+
+/*
+ * Note: This can be removed in ESLint v9 because structuredClone is available globally
+ * starting in Node.js v17.
+ */
+const structuredClone = require("@ungap/structured-clone").default;
+const { normalizeSeverityToNumber } = require("../shared/severity");
+
+//-----------------------------------------------------------------------------
+// Type Definitions
+//-----------------------------------------------------------------------------
+
+/**
+ * @typedef ObjectPropertySchema
+ * @property {Function|string} merge The function or name of the function to call
+ *      to merge multiple objects with this property.
+ * @property {Function|string} validate The function or name of the function to call
+ *      to validate the value of this property.
+ */
+
+//-----------------------------------------------------------------------------
+// Helpers
+//-----------------------------------------------------------------------------
+
+const ruleSeverities = new Map([
+    [0, 0], ["off", 0],
+    [1, 1], ["warn", 1],
+    [2, 2], ["error", 2]
+]);
+
+const globalVariablesValues = new Set([
+    true, "true", "writable", "writeable",
+    false, "false", "readonly", "readable", null,
+    "off"
+]);
+
+/**
+ * Check if a value is a non-null object.
+ * @param {any} value The value to check.
+ * @returns {boolean} `true` if the value is a non-null object.
+ */
+function isNonNullObject(value) {
+    return typeof value === "object" && value !== null;
+}
+
+/**
+ * Check if a value is a non-null non-array object.
+ * @param {any} value The value to check.
+ * @returns {boolean} `true` if the value is a non-null non-array object.
+ */
+function isNonArrayObject(value) {
+    return isNonNullObject(value) && !Array.isArray(value);
+}
+
+/**
+ * Check if a value is undefined.
+ * @param {any} value The value to check.
+ * @returns {boolean} `true` if the value is undefined.
+ */
+function isUndefined(value) {
+    return typeof value === "undefined";
+}
+
+/**
+ * Deeply merges two non-array objects.
+ * @param {Object} first The base object.
+ * @param {Object} second The overrides object.
+ * @param {Map<string, Map<string, Object>>} [mergeMap] Maps the combination of first and second arguments to a merged result.
+ * @returns {Object} An object with properties from both first and second.
+ */
+function deepMerge(first, second, mergeMap = new Map()) {
+
+    let secondMergeMap = mergeMap.get(first);
+
+    if (secondMergeMap) {
+        const result = secondMergeMap.get(second);
+
+        if (result) {
+
+            // If this combination of first and second arguments has been already visited, return the previously created result.
+            return result;
+        }
+    } else {
+        secondMergeMap = new Map();
+        mergeMap.set(first, secondMergeMap);
+    }
+
+    /*
+     * First create a result object where properties from the second object
+     * overwrite properties from the first. This sets up a baseline to use
+     * later rather than needing to inspect and change every property
+     * individually.
+     */
+    const result = {
+        ...first,
+        ...second
+    };
+
+    delete result.__proto__; // eslint-disable-line no-proto -- don't merge own property "__proto__"
+
+    // Store the pending result for this combination of first and second arguments.
+    secondMergeMap.set(second, result);
+
+    for (const key of Object.keys(second)) {
+
+        // avoid hairy edge case
+        if (key === "__proto__" || !Object.prototype.propertyIsEnumerable.call(first, key)) {
+            continue;
+        }
+
+        const firstValue = first[key];
+        const secondValue = second[key];
+
+        if (isNonArrayObject(firstValue) && isNonArrayObject(secondValue)) {
+            result[key] = deepMerge(firstValue, secondValue, mergeMap);
+        } else if (isUndefined(secondValue)) {
+            result[key] = firstValue;
+        }
+    }
+
+    return result;
+
+}
+
+/**
+ * Normalizes the rule options config for a given rule by ensuring that
+ * it is an array and that the first item is 0, 1, or 2.
+ * @param {Array|string|number} ruleOptions The rule options config.
+ * @returns {Array} An array of rule options.
+ */
+function normalizeRuleOptions(ruleOptions) {
+
+    const finalOptions = Array.isArray(ruleOptions)
+        ? ruleOptions.slice(0)
+        : [ruleOptions];
+
+    finalOptions[0] = ruleSeverities.get(finalOptions[0]);
+    return structuredClone(finalOptions);
+}
+
+//-----------------------------------------------------------------------------
+// Assertions
+//-----------------------------------------------------------------------------
+
+/**
+ * The error type when a rule's options are configured with an invalid type.
+ */
+class InvalidRuleOptionsError extends Error {
+
+    /**
+     * @param {string} ruleId Rule name being configured.
+     * @param {any} value The invalid value.
+     */
+    constructor(ruleId, value) {
+        super(`Key "${ruleId}": Expected severity of "off", 0, "warn", 1, "error", or 2.`);
+        this.messageTemplate = "invalid-rule-options";
+        this.messageData = { ruleId, value };
+    }
+}
+
+/**
+ * Validates that a value is a valid rule options entry.
+ * @param {string} ruleId Rule name being configured.
+ * @param {any} value The value to check.
+ * @returns {void}
+ * @throws {InvalidRuleOptionsError} If the value isn't a valid rule options.
+ */
+function assertIsRuleOptions(ruleId, value) {
+    if (typeof value !== "string" && typeof value !== "number" && !Array.isArray(value)) {
+        throw new InvalidRuleOptionsError(ruleId, value);
+    }
+}
+
+/**
+ * The error type when a rule's severity is invalid.
+ */
+class InvalidRuleSeverityError extends Error {
+
+    /**
+     * @param {string} ruleId Rule name being configured.
+     * @param {any} value The invalid value.
+     */
+    constructor(ruleId, value) {
+        super(`Key "${ruleId}": Expected severity of "off", 0, "warn", 1, "error", or 2.`);
+        this.messageTemplate = "invalid-rule-severity";
+        this.messageData = { ruleId, value };
+    }
+}
+
+/**
+ * Validates that a value is valid rule severity.
+ * @param {string} ruleId Rule name being configured.
+ * @param {any} value The value to check.
+ * @returns {void}
+ * @throws {InvalidRuleSeverityError} If the value isn't a valid rule severity.
+ */
+function assertIsRuleSeverity(ruleId, value) {
+    const severity = ruleSeverities.get(value);
+
+    if (typeof severity === "undefined") {
+        throw new InvalidRuleSeverityError(ruleId, value);
+    }
+}
+
+/**
+ * Validates that a given string is the form pluginName/objectName.
+ * @param {string} value The string to check.
+ * @returns {void}
+ * @throws {TypeError} If the string isn't in the correct format.
+ */
+function assertIsPluginMemberName(value) {
+    if (!/[@a-z0-9-_$]+(?:\/(?:[a-z0-9-_$]+))+$/iu.test(value)) {
+        throw new TypeError(`Expected string in the form "pluginName/objectName" but found "${value}".`);
+    }
+}
+
+/**
+ * Validates that a value is an object.
+ * @param {any} value The value to check.
+ * @returns {void}
+ * @throws {TypeError} If the value isn't an object.
+ */
+function assertIsObject(value) {
+    if (!isNonNullObject(value)) {
+        throw new TypeError("Expected an object.");
+    }
+}
+
+/**
+ * The error type when there's an eslintrc-style options in a flat config.
+ */
+class IncompatibleKeyError extends Error {
+
+    /**
+     * @param {string} key The invalid key.
+     */
+    constructor(key) {
+        super("This appears to be in eslintrc format rather than flat config format.");
+        this.messageTemplate = "eslintrc-incompat";
+        this.messageData = { key };
+    }
+}
+
+/**
+ * The error type when there's an eslintrc-style plugins array found.
+ */
+class IncompatiblePluginsError extends Error {
+
+    /**
+     * Creates a new instance.
+     * @param {Array<string>} plugins The plugins array.
+     */
+    constructor(plugins) {
+        super("This appears to be in eslintrc format (array of strings) rather than flat config format (object).");
+        this.messageTemplate = "eslintrc-plugins";
+        this.messageData = { plugins };
+    }
+}
+
+
+//-----------------------------------------------------------------------------
+// Low-Level Schemas
+//-----------------------------------------------------------------------------
+
+/** @type {ObjectPropertySchema} */
+const booleanSchema = {
+    merge: "replace",
+    validate: "boolean"
+};
+
+const ALLOWED_SEVERITIES = new Set(["error", "warn", "off", 2, 1, 0]);
+
+/** @type {ObjectPropertySchema} */
+const disableDirectiveSeveritySchema = {
+    merge(first, second) {
+        const value = second === void 0 ? first : second;
+
+        if (typeof value === "boolean") {
+            return value ? "warn" : "off";
+        }
+
+        return normalizeSeverityToNumber(value);
+    },
+    validate(value) {
+        if (!(ALLOWED_SEVERITIES.has(value) || typeof value === "boolean")) {
+            throw new TypeError("Expected one of: \"error\", \"warn\", \"off\", 0, 1, 2, or a boolean.");
+        }
+    }
+};
+
+/** @type {ObjectPropertySchema} */
+const deepObjectAssignSchema = {
+    merge(first = {}, second = {}) {
+        return deepMerge(first, second);
+    },
+    validate: "object"
+};
+
+//-----------------------------------------------------------------------------
+// High-Level Schemas
+//-----------------------------------------------------------------------------
+
+/** @type {ObjectPropertySchema} */
+const globalsSchema = {
+    merge: "assign",
+    validate(value) {
+
+        assertIsObject(value);
+
+        for (const key of Object.keys(value)) {
+
+            // avoid hairy edge case
+            if (key === "__proto__") {
+                continue;
+            }
+
+            if (key !== key.trim()) {
+                throw new TypeError(`Global "${key}" has leading or trailing whitespace.`);
+            }
+
+            if (!globalVariablesValues.has(value[key])) {
+                throw new TypeError(`Key "${key}": Expected "readonly", "writable", or "off".`);
+            }
+        }
+    }
+};
+
+/** @type {ObjectPropertySchema} */
+const parserSchema = {
+    merge: "replace",
+    validate(value) {
+
+        if (!value || typeof value !== "object" ||
+            (typeof value.parse !== "function" && typeof value.parseForESLint !== "function")
+        ) {
+            throw new TypeError("Expected object with parse() or parseForESLint() method.");
+        }
+
+    }
+};
+
+/** @type {ObjectPropertySchema} */
+const pluginsSchema = {
+    merge(first = {}, second = {}) {
+        const keys = new Set([...Object.keys(first), ...Object.keys(second)]);
+        const result = {};
+
+        // manually validate that plugins are not redefined
+        for (const key of keys) {
+
+            // avoid hairy edge case
+            if (key === "__proto__") {
+                continue;
+            }
+
+            if (key in first && key in second && first[key] !== second[key]) {
+                throw new TypeError(`Cannot redefine plugin "${key}".`);
+            }
+
+            result[key] = second[key] || first[key];
+        }
+
+        return result;
+    },
+    validate(value) {
+
+        // first check the value to be sure it's an object
+        if (value === null || typeof value !== "object") {
+            throw new TypeError("Expected an object.");
+        }
+
+        // make sure it's not an array, which would mean eslintrc-style is used
+        if (Array.isArray(value)) {
+            throw new IncompatiblePluginsError(value);
+        }
+
+        // second check the keys to make sure they are objects
+        for (const key of Object.keys(value)) {
+
+            // avoid hairy edge case
+            if (key === "__proto__") {
+                continue;
+            }
+
+            if (value[key] === null || typeof value[key] !== "object") {
+                throw new TypeError(`Key "${key}": Expected an object.`);
+            }
+        }
+    }
+};
+
+/** @type {ObjectPropertySchema} */
+const processorSchema = {
+    merge: "replace",
+    validate(value) {
+        if (typeof value === "string") {
+            assertIsPluginMemberName(value);
+        } else if (value && typeof value === "object") {
+            if (typeof value.preprocess !== "function" || typeof value.postprocess !== "function") {
+                throw new TypeError("Object must have a preprocess() and a postprocess() method.");
+            }
+        } else {
+            throw new TypeError("Expected an object or a string.");
+        }
+    }
+};
+
+/** @type {ObjectPropertySchema} */
+const rulesSchema = {
+    merge(first = {}, second = {}) {
+
+        const result = {
+            ...first,
+            ...second
+        };
+
+
+        for (const ruleId of Object.keys(result)) {
+
+            try {
+
+                // avoid hairy edge case
+                if (ruleId === "__proto__") {
+
+                    /* eslint-disable-next-line no-proto -- Though deprecated, may still be present */
+                    delete result.__proto__;
+                    continue;
+                }
+
+                result[ruleId] = normalizeRuleOptions(result[ruleId]);
+
+                /*
+                 * If either rule config is missing, then the correct
+                 * config is already present and we just need to normalize
+                 * the severity.
+                 */
+                if (!(ruleId in first) || !(ruleId in second)) {
+                    continue;
+                }
+
+                const firstRuleOptions = normalizeRuleOptions(first[ruleId]);
+                const secondRuleOptions = normalizeRuleOptions(second[ruleId]);
+
+                /*
+                 * If the second rule config only has a severity (length of 1),
+                 * then use that severity and keep the rest of the options from
+                 * the first rule config.
+                 */
+                if (secondRuleOptions.length === 1) {
+                    result[ruleId] = [secondRuleOptions[0], ...firstRuleOptions.slice(1)];
+                    continue;
+                }
+
+                /*
+                 * In any other situation, then the second rule config takes
+                 * precedence. That means the value at `result[ruleId]` is
+                 * already correct and no further work is necessary.
+                 */
+            } catch (ex) {
+                throw new Error(`Key "${ruleId}": ${ex.message}`, { cause: ex });
+            }
+
+        }
+
+        return result;
+
+
+    },
+
+    validate(value) {
+        assertIsObject(value);
+
+        /*
+         * We are not checking the rule schema here because there is no
+         * guarantee that the rule definition is present at this point. Instead
+         * we wait and check the rule schema during the finalization step
+         * of calculating a config.
+         */
+        for (const ruleId of Object.keys(value)) {
+
+            // avoid hairy edge case
+            if (ruleId === "__proto__") {
+                continue;
+            }
+
+            const ruleOptions = value[ruleId];
+
+            assertIsRuleOptions(ruleId, ruleOptions);
+
+            if (Array.isArray(ruleOptions)) {
+                assertIsRuleSeverity(ruleId, ruleOptions[0]);
+            } else {
+                assertIsRuleSeverity(ruleId, ruleOptions);
+            }
+        }
+    }
+};
+
+/** @type {ObjectPropertySchema} */
+const ecmaVersionSchema = {
+    merge: "replace",
+    validate(value) {
+        if (typeof value === "number" || value === "latest") {
+            return;
+        }
+
+        throw new TypeError("Expected a number or \"latest\".");
+    }
+};
+
+/** @type {ObjectPropertySchema} */
+const sourceTypeSchema = {
+    merge: "replace",
+    validate(value) {
+        if (typeof value !== "string" || !/^(?:script|module|commonjs)$/u.test(value)) {
+            throw new TypeError("Expected \"script\", \"module\", or \"commonjs\".");
+        }
+    }
+};
+
+/**
+ * Creates a schema that always throws an error. Useful for warning
+ * about eslintrc-style keys.
+ * @param {string} key The eslintrc key to create a schema for.
+ * @returns {ObjectPropertySchema} The schema.
+ */
+function createEslintrcErrorSchema(key) {
+    return {
+        merge: "replace",
+        validate() {
+            throw new IncompatibleKeyError(key);
+        }
+    };
+}
+
+const eslintrcKeys = [
+    "env",
+    "extends",
+    "globals",
+    "ignorePatterns",
+    "noInlineConfig",
+    "overrides",
+    "parser",
+    "parserOptions",
+    "reportUnusedDisableDirectives",
+    "root"
+];
+
+//-----------------------------------------------------------------------------
+// Full schema
+//-----------------------------------------------------------------------------
+
+const flatConfigSchema = {
+
+    // eslintrc-style keys that should always error
+    ...Object.fromEntries(eslintrcKeys.map(key => [key, createEslintrcErrorSchema(key)])),
+
+    // flat config keys
+    settings: deepObjectAssignSchema,
+    linterOptions: {
+        schema: {
+            noInlineConfig: booleanSchema,
+            reportUnusedDisableDirectives: disableDirectiveSeveritySchema
+        }
+    },
+    languageOptions: {
+        schema: {
+            ecmaVersion: ecmaVersionSchema,
+            sourceType: sourceTypeSchema,
+            globals: globalsSchema,
+            parser: parserSchema,
+            parserOptions: deepObjectAssignSchema
+        }
+    },
+    processor: processorSchema,
+    plugins: pluginsSchema,
+    rules: rulesSchema
+};
+
+//-----------------------------------------------------------------------------
+// Exports
+//-----------------------------------------------------------------------------
+
+module.exports = {
+    flatConfigSchema,
+    assertIsRuleSeverity,
+    assertIsRuleOptions
+};
Index: frontend/node_modules/eslint/lib/config/rule-validator.js
===================================================================
--- frontend/node_modules/eslint/lib/config/rule-validator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/config/rule-validator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,158 @@
+/**
+ * @fileoverview Rule Validator
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//-----------------------------------------------------------------------------
+// Requirements
+//-----------------------------------------------------------------------------
+
+const ajvImport = require("../shared/ajv");
+const ajv = ajvImport();
+const {
+    parseRuleId,
+    getRuleFromConfig,
+    getRuleOptionsSchema
+} = require("./flat-config-helpers");
+const ruleReplacements = require("../../conf/replacements.json");
+
+//-----------------------------------------------------------------------------
+// Helpers
+//-----------------------------------------------------------------------------
+
+/**
+ * Throws a helpful error when a rule cannot be found.
+ * @param {Object} ruleId The rule identifier.
+ * @param {string} ruleId.pluginName The ID of the rule to find.
+ * @param {string} ruleId.ruleName The ID of the rule to find.
+ * @param {Object} config The config to search in.
+ * @throws {TypeError} For missing plugin or rule.
+ * @returns {void}
+ */
+function throwRuleNotFoundError({ pluginName, ruleName }, config) {
+
+    const ruleId = pluginName === "@" ? ruleName : `${pluginName}/${ruleName}`;
+
+    const errorMessageHeader = `Key "rules": Key "${ruleId}"`;
+    let errorMessage = `${errorMessageHeader}: Could not find plugin "${pluginName}".`;
+
+    // if the plugin exists then we need to check if the rule exists
+    if (config.plugins && config.plugins[pluginName]) {
+        const replacementRuleName = ruleReplacements.rules[ruleName];
+
+        if (pluginName === "@" && replacementRuleName) {
+
+            errorMessage = `${errorMessageHeader}: Rule "${ruleName}" was removed and replaced by "${replacementRuleName}".`;
+
+        } else {
+
+            errorMessage = `${errorMessageHeader}: Could not find "${ruleName}" in plugin "${pluginName}".`;
+
+            // otherwise, let's see if we can find the rule name elsewhere
+            for (const [otherPluginName, otherPlugin] of Object.entries(config.plugins)) {
+                if (otherPlugin.rules && otherPlugin.rules[ruleName]) {
+                    errorMessage += ` Did you mean "${otherPluginName}/${ruleName}"?`;
+                    break;
+                }
+            }
+
+        }
+
+        // falls through to throw error
+    }
+
+    throw new TypeError(errorMessage);
+}
+
+//-----------------------------------------------------------------------------
+// Exports
+//-----------------------------------------------------------------------------
+
+/**
+ * Implements validation functionality for the rules portion of a config.
+ */
+class RuleValidator {
+
+    /**
+     * Creates a new instance.
+     */
+    constructor() {
+
+        /**
+         * A collection of compiled validators for rules that have already
+         * been validated.
+         * @type {WeakMap}
+         */
+        this.validators = new WeakMap();
+    }
+
+    /**
+     * Validates all of the rule configurations in a config against each
+     * rule's schema.
+     * @param {Object} config The full config to validate. This object must
+     *      contain both the rules section and the plugins section.
+     * @returns {void}
+     * @throws {Error} If a rule's configuration does not match its schema.
+     */
+    validate(config) {
+
+        if (!config.rules) {
+            return;
+        }
+
+        for (const [ruleId, ruleOptions] of Object.entries(config.rules)) {
+
+            // check for edge case
+            if (ruleId === "__proto__") {
+                continue;
+            }
+
+            /*
+             * If a rule is disabled, we don't do any validation. This allows
+             * users to safely set any value to 0 or "off" without worrying
+             * that it will cause a validation error.
+             *
+             * Note: ruleOptions is always an array at this point because
+             * this validation occurs after FlatConfigArray has merged and
+             * normalized values.
+             */
+            if (ruleOptions[0] === 0) {
+                continue;
+            }
+
+            const rule = getRuleFromConfig(ruleId, config);
+
+            if (!rule) {
+                throwRuleNotFoundError(parseRuleId(ruleId), config);
+            }
+
+            // Precompile and cache validator the first time
+            if (!this.validators.has(rule)) {
+                const schema = getRuleOptionsSchema(rule);
+
+                if (schema) {
+                    this.validators.set(rule, ajv.compile(schema));
+                }
+            }
+
+            const validateRule = this.validators.get(rule);
+
+            if (validateRule) {
+
+                validateRule(ruleOptions.slice(1));
+
+                if (validateRule.errors) {
+                    throw new Error(`Key "rules": Key "${ruleId}": ${
+                        validateRule.errors.map(
+                            error => `\tValue ${JSON.stringify(error.data)} ${error.message}.\n`
+                        ).join("")
+                    }`);
+                }
+            }
+        }
+    }
+}
+
+exports.RuleValidator = RuleValidator;
Index: frontend/node_modules/eslint/lib/eslint/eslint-helpers.js
===================================================================
--- frontend/node_modules/eslint/lib/eslint/eslint-helpers.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/eslint/eslint-helpers.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,932 @@
+/**
+ * @fileoverview Helper functions for ESLint class
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//-----------------------------------------------------------------------------
+// Requirements
+//-----------------------------------------------------------------------------
+
+const path = require("path");
+const fs = require("fs");
+const fsp = fs.promises;
+const isGlob = require("is-glob");
+const hash = require("../cli-engine/hash");
+const minimatch = require("minimatch");
+const fswalk = require("@nodelib/fs.walk");
+const globParent = require("glob-parent");
+const isPathInside = require("is-path-inside");
+
+//-----------------------------------------------------------------------------
+// Fixup references
+//-----------------------------------------------------------------------------
+
+const Minimatch = minimatch.Minimatch;
+const MINIMATCH_OPTIONS = { dot: true };
+
+//-----------------------------------------------------------------------------
+// Types
+//-----------------------------------------------------------------------------
+
+/**
+ * @typedef {Object} GlobSearch
+ * @property {Array<string>} patterns The normalized patterns to use for a search.
+ * @property {Array<string>} rawPatterns The patterns as entered by the user
+ *      before doing any normalization.
+ */
+
+//-----------------------------------------------------------------------------
+// Errors
+//-----------------------------------------------------------------------------
+
+/**
+ * The error type when no files match a glob.
+ */
+class NoFilesFoundError extends Error {
+
+    /**
+     * @param {string} pattern The glob pattern which was not found.
+     * @param {boolean} globEnabled If `false` then the pattern was a glob pattern, but glob was disabled.
+     */
+    constructor(pattern, globEnabled) {
+        super(`No files matching '${pattern}' were found${!globEnabled ? " (glob was disabled)" : ""}.`);
+        this.messageTemplate = "file-not-found";
+        this.messageData = { pattern, globDisabled: !globEnabled };
+    }
+}
+
+/**
+ * The error type when a search fails to match multiple patterns.
+ */
+class UnmatchedSearchPatternsError extends Error {
+
+    /**
+     * @param {Object} options The options for the error.
+     * @param {string} options.basePath The directory that was searched.
+     * @param {Array<string>} options.unmatchedPatterns The glob patterns
+     *      which were not found.
+     * @param {Array<string>} options.patterns The glob patterns that were
+     *      searched.
+     * @param {Array<string>} options.rawPatterns The raw glob patterns that
+     *      were searched.
+     */
+    constructor({ basePath, unmatchedPatterns, patterns, rawPatterns }) {
+        super(`No files matching '${rawPatterns}' in '${basePath}' were found.`);
+        this.basePath = basePath;
+        this.unmatchedPatterns = unmatchedPatterns;
+        this.patterns = patterns;
+        this.rawPatterns = rawPatterns;
+    }
+}
+
+/**
+ * The error type when there are files matched by a glob, but all of them have been ignored.
+ */
+class AllFilesIgnoredError extends Error {
+
+    /**
+     * @param {string} pattern The glob pattern which was not found.
+     */
+    constructor(pattern) {
+        super(`All files matched by '${pattern}' are ignored.`);
+        this.messageTemplate = "all-files-ignored";
+        this.messageData = { pattern };
+    }
+}
+
+
+//-----------------------------------------------------------------------------
+// General Helpers
+//-----------------------------------------------------------------------------
+
+/**
+ * Check if a given value is a non-empty string or not.
+ * @param {any} x The value to check.
+ * @returns {boolean} `true` if `x` is a non-empty string.
+ */
+function isNonEmptyString(x) {
+    return typeof x === "string" && x.trim() !== "";
+}
+
+/**
+ * Check if a given value is an array of non-empty strings or not.
+ * @param {any} x The value to check.
+ * @returns {boolean} `true` if `x` is an array of non-empty strings.
+ */
+function isArrayOfNonEmptyString(x) {
+    return Array.isArray(x) && x.every(isNonEmptyString);
+}
+
+//-----------------------------------------------------------------------------
+// File-related Helpers
+//-----------------------------------------------------------------------------
+
+/**
+ * Normalizes slashes in a file pattern to posix-style.
+ * @param {string} pattern The pattern to replace slashes in.
+ * @returns {string} The pattern with slashes normalized.
+ */
+function normalizeToPosix(pattern) {
+    return pattern.replace(/\\/gu, "/");
+}
+
+/**
+ * Check if a string is a glob pattern or not.
+ * @param {string} pattern A glob pattern.
+ * @returns {boolean} `true` if the string is a glob pattern.
+ */
+function isGlobPattern(pattern) {
+    return isGlob(path.sep === "\\" ? normalizeToPosix(pattern) : pattern);
+}
+
+
+/**
+ * Determines if a given glob pattern will return any results.
+ * Used primarily to help with useful error messages.
+ * @param {Object} options The options for the function.
+ * @param {string} options.basePath The directory to search.
+ * @param {string} options.pattern A glob pattern to match.
+ * @returns {Promise<boolean>} True if there is a glob match, false if not.
+ */
+function globMatch({ basePath, pattern }) {
+
+    let found = false;
+    const patternToUse = path.isAbsolute(pattern)
+        ? normalizeToPosix(path.relative(basePath, pattern))
+        : pattern;
+
+    const matcher = new Minimatch(patternToUse, MINIMATCH_OPTIONS);
+
+    const fsWalkSettings = {
+
+        deepFilter(entry) {
+            const relativePath = normalizeToPosix(path.relative(basePath, entry.path));
+
+            return !found && matcher.match(relativePath, true);
+        },
+
+        entryFilter(entry) {
+            if (found || entry.dirent.isDirectory()) {
+                return false;
+            }
+
+            const relativePath = normalizeToPosix(path.relative(basePath, entry.path));
+
+            if (matcher.match(relativePath)) {
+                found = true;
+                return true;
+            }
+
+            return false;
+        }
+    };
+
+    return new Promise(resolve => {
+
+        // using a stream so we can exit early because we just need one match
+        const globStream = fswalk.walkStream(basePath, fsWalkSettings);
+
+        globStream.on("data", () => {
+            globStream.destroy();
+            resolve(true);
+        });
+
+        // swallow errors as they're not important here
+        globStream.on("error", () => { });
+
+        globStream.on("end", () => {
+            resolve(false);
+        });
+        globStream.read();
+    });
+
+}
+
+/**
+ * Searches a directory looking for matching glob patterns. This uses
+ * the config array's logic to determine if a directory or file should
+ * be ignored, so it is consistent with how ignoring works throughout
+ * ESLint.
+ * @param {Object} options The options for this function.
+ * @param {string} options.basePath The directory to search.
+ * @param {Array<string>} options.patterns An array of glob patterns
+ *      to match.
+ * @param {Array<string>} options.rawPatterns An array of glob patterns
+ *      as the user inputted them. Used for errors.
+ * @param {FlatConfigArray} options.configs The config array to use for
+ *      determining what to ignore.
+ * @param {boolean} options.errorOnUnmatchedPattern Determines if an error
+ *      should be thrown when a pattern is unmatched.
+ * @returns {Promise<Array<string>>} An array of matching file paths
+ *      or an empty array if there are no matches.
+ * @throws {UnmatchedSearchPatternsError} If there is a pattern that doesn't
+ *      match any files.
+ */
+async function globSearch({
+    basePath,
+    patterns,
+    rawPatterns,
+    configs,
+    errorOnUnmatchedPattern
+}) {
+
+    if (patterns.length === 0) {
+        return [];
+    }
+
+    /*
+     * In this section we are converting the patterns into Minimatch
+     * instances for performance reasons. Because we are doing the same
+     * matches repeatedly, it's best to compile those patterns once and
+     * reuse them multiple times.
+     *
+     * To do that, we convert any patterns with an absolute path into a
+     * relative path and normalize it to Posix-style slashes. We also keep
+     * track of the relative patterns to map them back to the original
+     * patterns, which we need in order to throw an error if there are any
+     * unmatched patterns.
+     */
+    const relativeToPatterns = new Map();
+    const matchers = patterns.map((pattern, i) => {
+        const patternToUse = path.isAbsolute(pattern)
+            ? normalizeToPosix(path.relative(basePath, pattern))
+            : pattern;
+
+        relativeToPatterns.set(patternToUse, patterns[i]);
+
+        return new Minimatch(patternToUse, MINIMATCH_OPTIONS);
+    });
+
+    /*
+     * We track unmatched patterns because we may want to throw an error when
+     * they occur. To start, this set is initialized with all of the patterns.
+     * Every time a match occurs, the pattern is removed from the set, making
+     * it easy to tell if we have any unmatched patterns left at the end of
+     * search.
+     */
+    const unmatchedPatterns = new Set([...relativeToPatterns.keys()]);
+
+    const filePaths = (await new Promise((resolve, reject) => {
+
+        let promiseRejected = false;
+
+        /**
+         * Wraps a boolean-returning filter function. The wrapped function will reject the promise if an error occurs.
+         * @param {Function} filter A filter function to wrap.
+         * @returns {Function} A function similar to the wrapped filter that rejects the promise if an error occurs.
+         */
+        function wrapFilter(filter) {
+            return (...args) => {
+
+                // No need to run the filter if an error has been thrown.
+                if (!promiseRejected) {
+                    try {
+                        return filter(...args);
+                    } catch (error) {
+                        promiseRejected = true;
+                        reject(error);
+                    }
+                }
+                return false;
+            };
+        }
+
+        fswalk.walk(
+            basePath,
+            {
+                deepFilter: wrapFilter(entry => {
+                    const relativePath = normalizeToPosix(path.relative(basePath, entry.path));
+                    const matchesPattern = matchers.some(matcher => matcher.match(relativePath, true));
+
+                    return matchesPattern && !configs.isDirectoryIgnored(entry.path);
+                }),
+                entryFilter: wrapFilter(entry => {
+                    const relativePath = normalizeToPosix(path.relative(basePath, entry.path));
+
+                    // entries may be directories or files so filter out directories
+                    if (entry.dirent.isDirectory()) {
+                        return false;
+                    }
+
+                    /*
+                     * Optimization: We need to track when patterns are left unmatched
+                     * and so we use `unmatchedPatterns` to do that. There is a bit of
+                     * complexity here because the same file can be matched by more than
+                     * one pattern. So, when we start, we actually need to test every
+                     * pattern against every file. Once we know there are no remaining
+                     * unmatched patterns, then we can switch to just looking for the
+                     * first matching pattern for improved speed.
+                     */
+                    const matchesPattern = unmatchedPatterns.size > 0
+                        ? matchers.reduce((previousValue, matcher) => {
+                            const pathMatches = matcher.match(relativePath);
+
+                            /*
+                             * We updated the unmatched patterns set only if the path
+                             * matches and the file isn't ignored. If the file is
+                             * ignored, that means there wasn't a match for the
+                             * pattern so it should not be removed.
+                             *
+                             * Performance note: isFileIgnored() aggressively caches
+                             * results so there is no performance penalty for calling
+                             * it twice with the same argument.
+                             */
+                            if (pathMatches && !configs.isFileIgnored(entry.path)) {
+                                unmatchedPatterns.delete(matcher.pattern);
+                            }
+
+                            return pathMatches || previousValue;
+                        }, false)
+                        : matchers.some(matcher => matcher.match(relativePath));
+
+                    return matchesPattern && !configs.isFileIgnored(entry.path);
+                })
+            },
+            (error, entries) => {
+
+                // If the promise is already rejected, calling `resolve` or `reject` will do nothing.
+                if (error) {
+                    reject(error);
+                } else {
+                    resolve(entries);
+                }
+            }
+        );
+    })).map(entry => entry.path);
+
+    // now check to see if we have any unmatched patterns
+    if (errorOnUnmatchedPattern && unmatchedPatterns.size > 0) {
+        throw new UnmatchedSearchPatternsError({
+            basePath,
+            unmatchedPatterns: [...unmatchedPatterns].map(
+                pattern => relativeToPatterns.get(pattern)
+            ),
+            patterns,
+            rawPatterns
+        });
+    }
+
+    return filePaths;
+}
+
+/**
+ * Throws an error for unmatched patterns. The error will only contain information about the first one.
+ * Checks to see if there are any ignored results for a given search.
+ * @param {Object} options The options for this function.
+ * @param {string} options.basePath The directory to search.
+ * @param {Array<string>} options.patterns An array of glob patterns
+ *      that were used in the original search.
+ * @param {Array<string>} options.rawPatterns An array of glob patterns
+ *      as the user inputted them. Used for errors.
+ * @param {Array<string>} options.unmatchedPatterns A non-empty array of glob patterns
+ *      that were unmatched in the original search.
+ * @returns {void} Always throws an error.
+ * @throws {NoFilesFoundError} If the first unmatched pattern
+ *      doesn't match any files even when there are no ignores.
+ * @throws {AllFilesIgnoredError} If the first unmatched pattern
+ *      matches some files when there are no ignores.
+ */
+async function throwErrorForUnmatchedPatterns({
+    basePath,
+    patterns,
+    rawPatterns,
+    unmatchedPatterns
+}) {
+
+    const pattern = unmatchedPatterns[0];
+    const rawPattern = rawPatterns[patterns.indexOf(pattern)];
+
+    const patternHasMatch = await globMatch({
+        basePath,
+        pattern
+    });
+
+    if (patternHasMatch) {
+        throw new AllFilesIgnoredError(rawPattern);
+    }
+
+    // if we get here there are truly no matches
+    throw new NoFilesFoundError(rawPattern, true);
+}
+
+/**
+ * Performs multiple glob searches in parallel.
+ * @param {Object} options The options for this function.
+ * @param {Map<string,GlobSearch>} options.searches
+ *      An array of glob patterns to match.
+ * @param {FlatConfigArray} options.configs The config array to use for
+ *      determining what to ignore.
+ * @param {boolean} options.errorOnUnmatchedPattern Determines if an
+ *      unmatched glob pattern should throw an error.
+ * @returns {Promise<Array<string>>} An array of matching file paths
+ *      or an empty array if there are no matches.
+ */
+async function globMultiSearch({ searches, configs, errorOnUnmatchedPattern }) {
+
+    /*
+     * For convenience, we normalized the search map into an array of objects.
+     * Next, we filter out all searches that have no patterns. This happens
+     * primarily for the cwd, which is prepopulated in the searches map as an
+     * optimization. However, if it has no patterns, it means all patterns
+     * occur outside of the cwd and we can safely filter out that search.
+     */
+    const normalizedSearches = [...searches].map(
+        ([basePath, { patterns, rawPatterns }]) => ({ basePath, patterns, rawPatterns })
+    ).filter(({ patterns }) => patterns.length > 0);
+
+    const results = await Promise.allSettled(
+        normalizedSearches.map(
+            ({ basePath, patterns, rawPatterns }) => globSearch({
+                basePath,
+                patterns,
+                rawPatterns,
+                configs,
+                errorOnUnmatchedPattern
+            })
+        )
+    );
+
+    const filePaths = [];
+
+    for (let i = 0; i < results.length; i++) {
+
+        const result = results[i];
+        const currentSearch = normalizedSearches[i];
+
+        if (result.status === "fulfilled") {
+
+            // if the search was successful just add the results
+            if (result.value.length > 0) {
+                filePaths.push(...result.value);
+            }
+
+            continue;
+        }
+
+        // if we make it here then there was an error
+        const error = result.reason;
+
+        // unexpected errors should be re-thrown
+        if (!error.basePath) {
+            throw error;
+        }
+
+        if (errorOnUnmatchedPattern) {
+
+            await throwErrorForUnmatchedPatterns({
+                ...currentSearch,
+                unmatchedPatterns: error.unmatchedPatterns
+            });
+
+        }
+
+    }
+
+    return filePaths;
+
+}
+
+/**
+ * Finds all files matching the options specified.
+ * @param {Object} args The arguments objects.
+ * @param {Array<string>} args.patterns An array of glob patterns.
+ * @param {boolean} args.globInputPaths true to interpret glob patterns,
+ *      false to not interpret glob patterns.
+ * @param {string} args.cwd The current working directory to find from.
+ * @param {FlatConfigArray} args.configs The configs for the current run.
+ * @param {boolean} args.errorOnUnmatchedPattern Determines if an unmatched pattern
+ *      should throw an error.
+ * @returns {Promise<Array<string>>} The fully resolved file paths.
+ * @throws {AllFilesIgnoredError} If there are no results due to an ignore pattern.
+ * @throws {NoFilesFoundError} If no files matched the given patterns.
+ */
+async function findFiles({
+    patterns,
+    globInputPaths,
+    cwd,
+    configs,
+    errorOnUnmatchedPattern
+}) {
+
+    const results = [];
+    const missingPatterns = [];
+    let globbyPatterns = [];
+    let rawPatterns = [];
+    const searches = new Map([[cwd, { patterns: globbyPatterns, rawPatterns: [] }]]);
+
+    // check to see if we have explicit files and directories
+    const filePaths = patterns.map(filePath => path.resolve(cwd, filePath));
+    const stats = await Promise.all(
+        filePaths.map(
+            filePath => fsp.stat(filePath).catch(() => { })
+        )
+    );
+
+    stats.forEach((stat, index) => {
+
+        const filePath = filePaths[index];
+        const pattern = normalizeToPosix(patterns[index]);
+
+        if (stat) {
+
+            // files are added directly to the list
+            if (stat.isFile()) {
+                results.push(filePath);
+            }
+
+            // directories need extensions attached
+            if (stat.isDirectory()) {
+
+                // group everything in cwd together and split out others
+                if (isPathInside(filePath, cwd)) {
+                    ({ patterns: globbyPatterns, rawPatterns } = searches.get(cwd));
+                } else {
+                    if (!searches.has(filePath)) {
+                        searches.set(filePath, { patterns: [], rawPatterns: [] });
+                    }
+                    ({ patterns: globbyPatterns, rawPatterns } = searches.get(filePath));
+                }
+
+                globbyPatterns.push(`${normalizeToPosix(filePath)}/**`);
+                rawPatterns.push(pattern);
+            }
+
+            return;
+        }
+
+        // save patterns for later use based on whether globs are enabled
+        if (globInputPaths && isGlobPattern(pattern)) {
+
+            const basePath = path.resolve(cwd, globParent(pattern));
+
+            // group in cwd if possible and split out others
+            if (isPathInside(basePath, cwd)) {
+                ({ patterns: globbyPatterns, rawPatterns } = searches.get(cwd));
+            } else {
+                if (!searches.has(basePath)) {
+                    searches.set(basePath, { patterns: [], rawPatterns: [] });
+                }
+                ({ patterns: globbyPatterns, rawPatterns } = searches.get(basePath));
+            }
+
+            globbyPatterns.push(filePath);
+            rawPatterns.push(pattern);
+        } else {
+            missingPatterns.push(pattern);
+        }
+    });
+
+    // there were patterns that didn't match anything, tell the user
+    if (errorOnUnmatchedPattern && missingPatterns.length) {
+        throw new NoFilesFoundError(missingPatterns[0], globInputPaths);
+    }
+
+    // now we are safe to do the search
+    const globbyResults = await globMultiSearch({
+        searches,
+        configs,
+        errorOnUnmatchedPattern
+    });
+
+    return [
+        ...new Set([
+            ...results,
+            ...globbyResults.map(filePath => path.resolve(filePath))
+        ])
+    ];
+}
+
+//-----------------------------------------------------------------------------
+// Results-related Helpers
+//-----------------------------------------------------------------------------
+
+/**
+ * Checks if the given message is an error message.
+ * @param {LintMessage} message The message to check.
+ * @returns {boolean} Whether or not the message is an error message.
+ * @private
+ */
+function isErrorMessage(message) {
+    return message.severity === 2;
+}
+
+/**
+ * Returns result with warning by ignore settings
+ * @param {string} filePath File path of checked code
+ * @param {string} baseDir Absolute path of base directory
+ * @returns {LintResult} Result with single warning
+ * @private
+ */
+function createIgnoreResult(filePath, baseDir) {
+    let message;
+    const isInNodeModules = baseDir && path.dirname(path.relative(baseDir, filePath)).split(path.sep).includes("node_modules");
+
+    if (isInNodeModules) {
+        message = "File ignored by default because it is located under the node_modules directory. Use ignore pattern \"!**/node_modules/\" to disable file ignore settings or use \"--no-warn-ignored\" to suppress this warning.";
+    } else {
+        message = "File ignored because of a matching ignore pattern. Use \"--no-ignore\" to disable file ignore settings or use \"--no-warn-ignored\" to suppress this warning.";
+    }
+
+    return {
+        filePath: path.resolve(filePath),
+        messages: [
+            {
+                ruleId: null,
+                fatal: false,
+                severity: 1,
+                message,
+                nodeType: null
+            }
+        ],
+        suppressedMessages: [],
+        errorCount: 0,
+        warningCount: 1,
+        fatalErrorCount: 0,
+        fixableErrorCount: 0,
+        fixableWarningCount: 0
+    };
+}
+
+//-----------------------------------------------------------------------------
+// Options-related Helpers
+//-----------------------------------------------------------------------------
+
+
+/**
+ * Check if a given value is a valid fix type or not.
+ * @param {any} x The value to check.
+ * @returns {boolean} `true` if `x` is valid fix type.
+ */
+function isFixType(x) {
+    return x === "directive" || x === "problem" || x === "suggestion" || x === "layout";
+}
+
+/**
+ * Check if a given value is an array of fix types or not.
+ * @param {any} x The value to check.
+ * @returns {boolean} `true` if `x` is an array of fix types.
+ */
+function isFixTypeArray(x) {
+    return Array.isArray(x) && x.every(isFixType);
+}
+
+/**
+ * The error for invalid options.
+ */
+class ESLintInvalidOptionsError extends Error {
+    constructor(messages) {
+        super(`Invalid Options:\n- ${messages.join("\n- ")}`);
+        this.code = "ESLINT_INVALID_OPTIONS";
+        Error.captureStackTrace(this, ESLintInvalidOptionsError);
+    }
+}
+
+/**
+ * Validates and normalizes options for the wrapped CLIEngine instance.
+ * @param {FlatESLintOptions} options The options to process.
+ * @throws {ESLintInvalidOptionsError} If of any of a variety of type errors.
+ * @returns {FlatESLintOptions} The normalized options.
+ */
+function processOptions({
+    allowInlineConfig = true, // ← we cannot use `overrideConfig.noInlineConfig` instead because `allowInlineConfig` has side-effect that suppress warnings that show inline configs are ignored.
+    baseConfig = null,
+    cache = false,
+    cacheLocation = ".eslintcache",
+    cacheStrategy = "metadata",
+    cwd = process.cwd(),
+    errorOnUnmatchedPattern = true,
+    fix = false,
+    fixTypes = null, // ← should be null by default because if it's an array then it suppresses rules that don't have the `meta.type` property.
+    globInputPaths = true,
+    ignore = true,
+    ignorePatterns = null,
+    overrideConfig = null,
+    overrideConfigFile = null,
+    plugins = {},
+    warnIgnored = true,
+    ...unknownOptions
+}) {
+    const errors = [];
+    const unknownOptionKeys = Object.keys(unknownOptions);
+
+    if (unknownOptionKeys.length >= 1) {
+        errors.push(`Unknown options: ${unknownOptionKeys.join(", ")}`);
+        if (unknownOptionKeys.includes("cacheFile")) {
+            errors.push("'cacheFile' has been removed. Please use the 'cacheLocation' option instead.");
+        }
+        if (unknownOptionKeys.includes("configFile")) {
+            errors.push("'configFile' has been removed. Please use the 'overrideConfigFile' option instead.");
+        }
+        if (unknownOptionKeys.includes("envs")) {
+            errors.push("'envs' has been removed.");
+        }
+        if (unknownOptionKeys.includes("extensions")) {
+            errors.push("'extensions' has been removed.");
+        }
+        if (unknownOptionKeys.includes("resolvePluginsRelativeTo")) {
+            errors.push("'resolvePluginsRelativeTo' has been removed.");
+        }
+        if (unknownOptionKeys.includes("globals")) {
+            errors.push("'globals' has been removed. Please use the 'overrideConfig.languageOptions.globals' option instead.");
+        }
+        if (unknownOptionKeys.includes("ignorePath")) {
+            errors.push("'ignorePath' has been removed.");
+        }
+        if (unknownOptionKeys.includes("ignorePattern")) {
+            errors.push("'ignorePattern' has been removed. Please use the 'overrideConfig.ignorePatterns' option instead.");
+        }
+        if (unknownOptionKeys.includes("parser")) {
+            errors.push("'parser' has been removed. Please use the 'overrideConfig.languageOptions.parser' option instead.");
+        }
+        if (unknownOptionKeys.includes("parserOptions")) {
+            errors.push("'parserOptions' has been removed. Please use the 'overrideConfig.languageOptions.parserOptions' option instead.");
+        }
+        if (unknownOptionKeys.includes("rules")) {
+            errors.push("'rules' has been removed. Please use the 'overrideConfig.rules' option instead.");
+        }
+        if (unknownOptionKeys.includes("rulePaths")) {
+            errors.push("'rulePaths' has been removed. Please define your rules using plugins.");
+        }
+        if (unknownOptionKeys.includes("reportUnusedDisableDirectives")) {
+            errors.push("'reportUnusedDisableDirectives' has been removed. Please use the 'overrideConfig.linterOptions.reportUnusedDisableDirectives' option instead.");
+        }
+    }
+    if (typeof allowInlineConfig !== "boolean") {
+        errors.push("'allowInlineConfig' must be a boolean.");
+    }
+    if (typeof baseConfig !== "object") {
+        errors.push("'baseConfig' must be an object or null.");
+    }
+    if (typeof cache !== "boolean") {
+        errors.push("'cache' must be a boolean.");
+    }
+    if (!isNonEmptyString(cacheLocation)) {
+        errors.push("'cacheLocation' must be a non-empty string.");
+    }
+    if (
+        cacheStrategy !== "metadata" &&
+        cacheStrategy !== "content"
+    ) {
+        errors.push("'cacheStrategy' must be any of \"metadata\", \"content\".");
+    }
+    if (!isNonEmptyString(cwd) || !path.isAbsolute(cwd)) {
+        errors.push("'cwd' must be an absolute path.");
+    }
+    if (typeof errorOnUnmatchedPattern !== "boolean") {
+        errors.push("'errorOnUnmatchedPattern' must be a boolean.");
+    }
+    if (typeof fix !== "boolean" && typeof fix !== "function") {
+        errors.push("'fix' must be a boolean or a function.");
+    }
+    if (fixTypes !== null && !isFixTypeArray(fixTypes)) {
+        errors.push("'fixTypes' must be an array of any of \"directive\", \"problem\", \"suggestion\", and \"layout\".");
+    }
+    if (typeof globInputPaths !== "boolean") {
+        errors.push("'globInputPaths' must be a boolean.");
+    }
+    if (typeof ignore !== "boolean") {
+        errors.push("'ignore' must be a boolean.");
+    }
+    if (!isArrayOfNonEmptyString(ignorePatterns) && ignorePatterns !== null) {
+        errors.push("'ignorePatterns' must be an array of non-empty strings or null.");
+    }
+    if (typeof overrideConfig !== "object") {
+        errors.push("'overrideConfig' must be an object or null.");
+    }
+    if (!isNonEmptyString(overrideConfigFile) && overrideConfigFile !== null && overrideConfigFile !== true) {
+        errors.push("'overrideConfigFile' must be a non-empty string, null, or true.");
+    }
+    if (typeof plugins !== "object") {
+        errors.push("'plugins' must be an object or null.");
+    } else if (plugins !== null && Object.keys(plugins).includes("")) {
+        errors.push("'plugins' must not include an empty string.");
+    }
+    if (Array.isArray(plugins)) {
+        errors.push("'plugins' doesn't add plugins to configuration to load. Please use the 'overrideConfig.plugins' option instead.");
+    }
+    if (typeof warnIgnored !== "boolean") {
+        errors.push("'warnIgnored' must be a boolean.");
+    }
+    if (errors.length > 0) {
+        throw new ESLintInvalidOptionsError(errors);
+    }
+
+    return {
+        allowInlineConfig,
+        baseConfig,
+        cache,
+        cacheLocation,
+        cacheStrategy,
+
+        // when overrideConfigFile is true that means don't do config file lookup
+        configFile: overrideConfigFile === true ? false : overrideConfigFile,
+        overrideConfig,
+        cwd: path.normalize(cwd),
+        errorOnUnmatchedPattern,
+        fix,
+        fixTypes,
+        globInputPaths,
+        ignore,
+        ignorePatterns,
+        warnIgnored
+    };
+}
+
+
+//-----------------------------------------------------------------------------
+// Cache-related helpers
+//-----------------------------------------------------------------------------
+
+/**
+ * return the cacheFile to be used by eslint, based on whether the provided parameter is
+ * a directory or looks like a directory (ends in `path.sep`), in which case the file
+ * name will be the `cacheFile/.cache_hashOfCWD`
+ *
+ * if cacheFile points to a file or looks like a file then in will just use that file
+ * @param {string} cacheFile The name of file to be used to store the cache
+ * @param {string} cwd Current working directory
+ * @returns {string} the resolved path to the cache file
+ */
+function getCacheFile(cacheFile, cwd) {
+
+    /*
+     * make sure the path separators are normalized for the environment/os
+     * keeping the trailing path separator if present
+     */
+    const normalizedCacheFile = path.normalize(cacheFile);
+
+    const resolvedCacheFile = path.resolve(cwd, normalizedCacheFile);
+    const looksLikeADirectory = normalizedCacheFile.slice(-1) === path.sep;
+
+    /**
+     * return the name for the cache file in case the provided parameter is a directory
+     * @returns {string} the resolved path to the cacheFile
+     */
+    function getCacheFileForDirectory() {
+        return path.join(resolvedCacheFile, `.cache_${hash(cwd)}`);
+    }
+
+    let fileStats;
+
+    try {
+        fileStats = fs.lstatSync(resolvedCacheFile);
+    } catch {
+        fileStats = null;
+    }
+
+
+    /*
+     * in case the file exists we need to verify if the provided path
+     * is a directory or a file. If it is a directory we want to create a file
+     * inside that directory
+     */
+    if (fileStats) {
+
+        /*
+         * is a directory or is a file, but the original file the user provided
+         * looks like a directory but `path.resolve` removed the `last path.sep`
+         * so we need to still treat this like a directory
+         */
+        if (fileStats.isDirectory() || looksLikeADirectory) {
+            return getCacheFileForDirectory();
+        }
+
+        // is file so just use that file
+        return resolvedCacheFile;
+    }
+
+    /*
+     * here we known the file or directory doesn't exist,
+     * so we will try to infer if its a directory if it looks like a directory
+     * for the current operating system.
+     */
+
+    // if the last character passed is a path separator we assume is a directory
+    if (looksLikeADirectory) {
+        return getCacheFileForDirectory();
+    }
+
+    return resolvedCacheFile;
+}
+
+
+//-----------------------------------------------------------------------------
+// Exports
+//-----------------------------------------------------------------------------
+
+module.exports = {
+    isGlobPattern,
+    findFiles,
+
+    isNonEmptyString,
+    isArrayOfNonEmptyString,
+
+    createIgnoreResult,
+    isErrorMessage,
+
+    processOptions,
+
+    getCacheFile
+};
Index: frontend/node_modules/eslint/lib/eslint/eslint.js
===================================================================
--- frontend/node_modules/eslint/lib/eslint/eslint.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/eslint/eslint.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,707 @@
+/**
+ * @fileoverview Main API Class
+ * @author Kai Cataldo
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const path = require("path");
+const fs = require("fs");
+const { promisify } = require("util");
+const { CLIEngine, getCLIEngineInternalSlots } = require("../cli-engine/cli-engine");
+const BuiltinRules = require("../rules");
+const {
+    Legacy: {
+        ConfigOps: {
+            getRuleSeverity
+        }
+    }
+} = require("@eslint/eslintrc");
+const { version } = require("../../package.json");
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/** @typedef {import("../cli-engine/cli-engine").LintReport} CLIEngineLintReport */
+/** @typedef {import("../shared/types").DeprecatedRuleInfo} DeprecatedRuleInfo */
+/** @typedef {import("../shared/types").ConfigData} ConfigData */
+/** @typedef {import("../shared/types").LintMessage} LintMessage */
+/** @typedef {import("../shared/types").SuppressedLintMessage} SuppressedLintMessage */
+/** @typedef {import("../shared/types").Plugin} Plugin */
+/** @typedef {import("../shared/types").Rule} Rule */
+/** @typedef {import("../shared/types").LintResult} LintResult */
+/** @typedef {import("../shared/types").ResultsMeta} ResultsMeta */
+
+/**
+ * The main formatter object.
+ * @typedef LoadedFormatter
+ * @property {(results: LintResult[], resultsMeta: ResultsMeta) => string | Promise<string>} format format function.
+ */
+
+/**
+ * The options with which to configure the ESLint instance.
+ * @typedef {Object} ESLintOptions
+ * @property {boolean} [allowInlineConfig] Enable or disable inline configuration comments.
+ * @property {ConfigData} [baseConfig] Base config object, extended by all configs used with this instance
+ * @property {boolean} [cache] Enable result caching.
+ * @property {string} [cacheLocation] The cache file to use instead of .eslintcache.
+ * @property {"metadata" | "content"} [cacheStrategy] The strategy used to detect changed files.
+ * @property {string} [cwd] The value to use for the current working directory.
+ * @property {boolean} [errorOnUnmatchedPattern] If `false` then `ESLint#lintFiles()` doesn't throw even if no target files found. Defaults to `true`.
+ * @property {string[]} [extensions] An array of file extensions to check.
+ * @property {boolean|Function} [fix] Execute in autofix mode. If a function, should return a boolean.
+ * @property {string[]} [fixTypes] Array of rule types to apply fixes for.
+ * @property {boolean} [globInputPaths] Set to false to skip glob resolution of input file paths to lint (default: true). If false, each input file paths is assumed to be a non-glob path to an existing file.
+ * @property {boolean} [ignore] False disables use of .eslintignore.
+ * @property {string} [ignorePath] The ignore file to use instead of .eslintignore.
+ * @property {ConfigData} [overrideConfig] Override config object, overrides all configs used with this instance
+ * @property {string} [overrideConfigFile] The configuration file to use.
+ * @property {Record<string,Plugin>|null} [plugins] Preloaded plugins. This is a map-like object, keys are plugin IDs and each value is implementation.
+ * @property {"error" | "warn" | "off"} [reportUnusedDisableDirectives] the severity to report unused eslint-disable directives.
+ * @property {string} [resolvePluginsRelativeTo] The folder where plugins should be resolved from, defaulting to the CWD.
+ * @property {string[]} [rulePaths] An array of directories to load custom rules from.
+ * @property {boolean} [useEslintrc] False disables looking for .eslintrc.* files.
+ */
+
+/**
+ * A rules metadata object.
+ * @typedef {Object} RulesMeta
+ * @property {string} id The plugin ID.
+ * @property {Object} definition The plugin definition.
+ */
+
+/**
+ * Private members for the `ESLint` instance.
+ * @typedef {Object} ESLintPrivateMembers
+ * @property {CLIEngine} cliEngine The wrapped CLIEngine instance.
+ * @property {ESLintOptions} options The options used to instantiate the ESLint instance.
+ */
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const writeFile = promisify(fs.writeFile);
+
+/**
+ * The map with which to store private class members.
+ * @type {WeakMap<ESLint, ESLintPrivateMembers>}
+ */
+const privateMembersMap = new WeakMap();
+
+/**
+ * Check if a given value is a non-empty string or not.
+ * @param {any} x The value to check.
+ * @returns {boolean} `true` if `x` is a non-empty string.
+ */
+function isNonEmptyString(x) {
+    return typeof x === "string" && x.trim() !== "";
+}
+
+/**
+ * Check if a given value is an array of non-empty strings or not.
+ * @param {any} x The value to check.
+ * @returns {boolean} `true` if `x` is an array of non-empty strings.
+ */
+function isArrayOfNonEmptyString(x) {
+    return Array.isArray(x) && x.every(isNonEmptyString);
+}
+
+/**
+ * Check if a given value is a valid fix type or not.
+ * @param {any} x The value to check.
+ * @returns {boolean} `true` if `x` is valid fix type.
+ */
+function isFixType(x) {
+    return x === "directive" || x === "problem" || x === "suggestion" || x === "layout";
+}
+
+/**
+ * Check if a given value is an array of fix types or not.
+ * @param {any} x The value to check.
+ * @returns {boolean} `true` if `x` is an array of fix types.
+ */
+function isFixTypeArray(x) {
+    return Array.isArray(x) && x.every(isFixType);
+}
+
+/**
+ * The error for invalid options.
+ */
+class ESLintInvalidOptionsError extends Error {
+    constructor(messages) {
+        super(`Invalid Options:\n- ${messages.join("\n- ")}`);
+        this.code = "ESLINT_INVALID_OPTIONS";
+        Error.captureStackTrace(this, ESLintInvalidOptionsError);
+    }
+}
+
+/**
+ * Validates and normalizes options for the wrapped CLIEngine instance.
+ * @param {ESLintOptions} options The options to process.
+ * @throws {ESLintInvalidOptionsError} If of any of a variety of type errors.
+ * @returns {ESLintOptions} The normalized options.
+ */
+function processOptions({
+    allowInlineConfig = true, // ← we cannot use `overrideConfig.noInlineConfig` instead because `allowInlineConfig` has side-effect that suppress warnings that show inline configs are ignored.
+    baseConfig = null,
+    cache = false,
+    cacheLocation = ".eslintcache",
+    cacheStrategy = "metadata",
+    cwd = process.cwd(),
+    errorOnUnmatchedPattern = true,
+    extensions = null, // ← should be null by default because if it's an array then it suppresses RFC20 feature.
+    fix = false,
+    fixTypes = null, // ← should be null by default because if it's an array then it suppresses rules that don't have the `meta.type` property.
+    globInputPaths = true,
+    ignore = true,
+    ignorePath = null, // ← should be null by default because if it's a string then it may throw ENOENT.
+    overrideConfig = null,
+    overrideConfigFile = null,
+    plugins = {},
+    reportUnusedDisableDirectives = null, // ← should be null by default because if it's a string then it overrides the 'reportUnusedDisableDirectives' setting in config files. And we cannot use `overrideConfig.reportUnusedDisableDirectives` instead because we cannot configure the `error` severity with that.
+    resolvePluginsRelativeTo = null, // ← should be null by default because if it's a string then it suppresses RFC47 feature.
+    rulePaths = [],
+    useEslintrc = true,
+    ...unknownOptions
+}) {
+    const errors = [];
+    const unknownOptionKeys = Object.keys(unknownOptions);
+
+    if (unknownOptionKeys.length >= 1) {
+        errors.push(`Unknown options: ${unknownOptionKeys.join(", ")}`);
+        if (unknownOptionKeys.includes("cacheFile")) {
+            errors.push("'cacheFile' has been removed. Please use the 'cacheLocation' option instead.");
+        }
+        if (unknownOptionKeys.includes("configFile")) {
+            errors.push("'configFile' has been removed. Please use the 'overrideConfigFile' option instead.");
+        }
+        if (unknownOptionKeys.includes("envs")) {
+            errors.push("'envs' has been removed. Please use the 'overrideConfig.env' option instead.");
+        }
+        if (unknownOptionKeys.includes("globals")) {
+            errors.push("'globals' has been removed. Please use the 'overrideConfig.globals' option instead.");
+        }
+        if (unknownOptionKeys.includes("ignorePattern")) {
+            errors.push("'ignorePattern' has been removed. Please use the 'overrideConfig.ignorePatterns' option instead.");
+        }
+        if (unknownOptionKeys.includes("parser")) {
+            errors.push("'parser' has been removed. Please use the 'overrideConfig.parser' option instead.");
+        }
+        if (unknownOptionKeys.includes("parserOptions")) {
+            errors.push("'parserOptions' has been removed. Please use the 'overrideConfig.parserOptions' option instead.");
+        }
+        if (unknownOptionKeys.includes("rules")) {
+            errors.push("'rules' has been removed. Please use the 'overrideConfig.rules' option instead.");
+        }
+    }
+    if (typeof allowInlineConfig !== "boolean") {
+        errors.push("'allowInlineConfig' must be a boolean.");
+    }
+    if (typeof baseConfig !== "object") {
+        errors.push("'baseConfig' must be an object or null.");
+    }
+    if (typeof cache !== "boolean") {
+        errors.push("'cache' must be a boolean.");
+    }
+    if (!isNonEmptyString(cacheLocation)) {
+        errors.push("'cacheLocation' must be a non-empty string.");
+    }
+    if (
+        cacheStrategy !== "metadata" &&
+        cacheStrategy !== "content"
+    ) {
+        errors.push("'cacheStrategy' must be any of \"metadata\", \"content\".");
+    }
+    if (!isNonEmptyString(cwd) || !path.isAbsolute(cwd)) {
+        errors.push("'cwd' must be an absolute path.");
+    }
+    if (typeof errorOnUnmatchedPattern !== "boolean") {
+        errors.push("'errorOnUnmatchedPattern' must be a boolean.");
+    }
+    if (!isArrayOfNonEmptyString(extensions) && extensions !== null) {
+        errors.push("'extensions' must be an array of non-empty strings or null.");
+    }
+    if (typeof fix !== "boolean" && typeof fix !== "function") {
+        errors.push("'fix' must be a boolean or a function.");
+    }
+    if (fixTypes !== null && !isFixTypeArray(fixTypes)) {
+        errors.push("'fixTypes' must be an array of any of \"directive\", \"problem\", \"suggestion\", and \"layout\".");
+    }
+    if (typeof globInputPaths !== "boolean") {
+        errors.push("'globInputPaths' must be a boolean.");
+    }
+    if (typeof ignore !== "boolean") {
+        errors.push("'ignore' must be a boolean.");
+    }
+    if (!isNonEmptyString(ignorePath) && ignorePath !== null) {
+        errors.push("'ignorePath' must be a non-empty string or null.");
+    }
+    if (typeof overrideConfig !== "object") {
+        errors.push("'overrideConfig' must be an object or null.");
+    }
+    if (!isNonEmptyString(overrideConfigFile) && overrideConfigFile !== null) {
+        errors.push("'overrideConfigFile' must be a non-empty string or null.");
+    }
+    if (typeof plugins !== "object") {
+        errors.push("'plugins' must be an object or null.");
+    } else if (plugins !== null && Object.keys(plugins).includes("")) {
+        errors.push("'plugins' must not include an empty string.");
+    }
+    if (Array.isArray(plugins)) {
+        errors.push("'plugins' doesn't add plugins to configuration to load. Please use the 'overrideConfig.plugins' option instead.");
+    }
+    if (
+        reportUnusedDisableDirectives !== "error" &&
+        reportUnusedDisableDirectives !== "warn" &&
+        reportUnusedDisableDirectives !== "off" &&
+        reportUnusedDisableDirectives !== null
+    ) {
+        errors.push("'reportUnusedDisableDirectives' must be any of \"error\", \"warn\", \"off\", and null.");
+    }
+    if (
+        !isNonEmptyString(resolvePluginsRelativeTo) &&
+        resolvePluginsRelativeTo !== null
+    ) {
+        errors.push("'resolvePluginsRelativeTo' must be a non-empty string or null.");
+    }
+    if (!isArrayOfNonEmptyString(rulePaths)) {
+        errors.push("'rulePaths' must be an array of non-empty strings.");
+    }
+    if (typeof useEslintrc !== "boolean") {
+        errors.push("'useEslintrc' must be a boolean.");
+    }
+
+    if (errors.length > 0) {
+        throw new ESLintInvalidOptionsError(errors);
+    }
+
+    return {
+        allowInlineConfig,
+        baseConfig,
+        cache,
+        cacheLocation,
+        cacheStrategy,
+        configFile: overrideConfigFile,
+        cwd: path.normalize(cwd),
+        errorOnUnmatchedPattern,
+        extensions,
+        fix,
+        fixTypes,
+        globInputPaths,
+        ignore,
+        ignorePath,
+        reportUnusedDisableDirectives,
+        resolvePluginsRelativeTo,
+        rulePaths,
+        useEslintrc
+    };
+}
+
+/**
+ * Check if a value has one or more properties and that value is not undefined.
+ * @param {any} obj The value to check.
+ * @returns {boolean} `true` if `obj` has one or more properties that that value is not undefined.
+ */
+function hasDefinedProperty(obj) {
+    if (typeof obj === "object" && obj !== null) {
+        for (const key in obj) {
+            if (typeof obj[key] !== "undefined") {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+/**
+ * Create rulesMeta object.
+ * @param {Map<string,Rule>} rules a map of rules from which to generate the object.
+ * @returns {Object} metadata for all enabled rules.
+ */
+function createRulesMeta(rules) {
+    return Array.from(rules).reduce((retVal, [id, rule]) => {
+        retVal[id] = rule.meta;
+        return retVal;
+    }, {});
+}
+
+/** @type {WeakMap<ExtractedConfig, DeprecatedRuleInfo[]>} */
+const usedDeprecatedRulesCache = new WeakMap();
+
+/**
+ * Create used deprecated rule list.
+ * @param {CLIEngine} cliEngine The CLIEngine instance.
+ * @param {string} maybeFilePath The absolute path to a lint target file or `"<text>"`.
+ * @returns {DeprecatedRuleInfo[]} The used deprecated rule list.
+ */
+function getOrFindUsedDeprecatedRules(cliEngine, maybeFilePath) {
+    const {
+        configArrayFactory,
+        options: { cwd }
+    } = getCLIEngineInternalSlots(cliEngine);
+    const filePath = path.isAbsolute(maybeFilePath)
+        ? maybeFilePath
+        : path.join(cwd, "__placeholder__.js");
+    const configArray = configArrayFactory.getConfigArrayForFile(filePath);
+    const config = configArray.extractConfig(filePath);
+
+    // Most files use the same config, so cache it.
+    if (!usedDeprecatedRulesCache.has(config)) {
+        const pluginRules = configArray.pluginRules;
+        const retv = [];
+
+        for (const [ruleId, ruleConf] of Object.entries(config.rules)) {
+            if (getRuleSeverity(ruleConf) === 0) {
+                continue;
+            }
+            const rule = pluginRules.get(ruleId) || BuiltinRules.get(ruleId);
+            const meta = rule && rule.meta;
+
+            if (meta && meta.deprecated) {
+                retv.push({ ruleId, replacedBy: meta.replacedBy || [] });
+            }
+        }
+
+        usedDeprecatedRulesCache.set(config, Object.freeze(retv));
+    }
+
+    return usedDeprecatedRulesCache.get(config);
+}
+
+/**
+ * Processes the linting results generated by a CLIEngine linting report to
+ * match the ESLint class's API.
+ * @param {CLIEngine} cliEngine The CLIEngine instance.
+ * @param {CLIEngineLintReport} report The CLIEngine linting report to process.
+ * @returns {LintResult[]} The processed linting results.
+ */
+function processCLIEngineLintReport(cliEngine, { results }) {
+    const descriptor = {
+        configurable: true,
+        enumerable: true,
+        get() {
+            return getOrFindUsedDeprecatedRules(cliEngine, this.filePath);
+        }
+    };
+
+    for (const result of results) {
+        Object.defineProperty(result, "usedDeprecatedRules", descriptor);
+    }
+
+    return results;
+}
+
+/**
+ * An Array.prototype.sort() compatible compare function to order results by their file path.
+ * @param {LintResult} a The first lint result.
+ * @param {LintResult} b The second lint result.
+ * @returns {number} An integer representing the order in which the two results should occur.
+ */
+function compareResultsByFilePath(a, b) {
+    if (a.filePath < b.filePath) {
+        return -1;
+    }
+
+    if (a.filePath > b.filePath) {
+        return 1;
+    }
+
+    return 0;
+}
+
+/**
+ * Main API.
+ */
+class ESLint {
+
+    /**
+     * Creates a new instance of the main ESLint API.
+     * @param {ESLintOptions} options The options for this instance.
+     */
+    constructor(options = {}) {
+        const processedOptions = processOptions(options);
+        const cliEngine = new CLIEngine(processedOptions, { preloadedPlugins: options.plugins });
+        const {
+            configArrayFactory,
+            lastConfigArrays
+        } = getCLIEngineInternalSlots(cliEngine);
+        let updated = false;
+
+        /*
+         * Address `overrideConfig` to set override config.
+         * Operate the `configArrayFactory` internal slot directly because this
+         * functionality doesn't exist as the public API of CLIEngine.
+         */
+        if (hasDefinedProperty(options.overrideConfig)) {
+            configArrayFactory.setOverrideConfig(options.overrideConfig);
+            updated = true;
+        }
+
+        // Update caches.
+        if (updated) {
+            configArrayFactory.clearCache();
+            lastConfigArrays[0] = configArrayFactory.getConfigArrayForFile();
+        }
+
+        // Initialize private properties.
+        privateMembersMap.set(this, {
+            cliEngine,
+            options: processedOptions
+        });
+    }
+
+    /**
+     * The version text.
+     * @type {string}
+     */
+    static get version() {
+        return version;
+    }
+
+    /**
+     * Outputs fixes from the given results to files.
+     * @param {LintResult[]} results The lint results.
+     * @returns {Promise<void>} Returns a promise that is used to track side effects.
+     */
+    static async outputFixes(results) {
+        if (!Array.isArray(results)) {
+            throw new Error("'results' must be an array");
+        }
+
+        await Promise.all(
+            results
+                .filter(result => {
+                    if (typeof result !== "object" || result === null) {
+                        throw new Error("'results' must include only objects");
+                    }
+                    return (
+                        typeof result.output === "string" &&
+                        path.isAbsolute(result.filePath)
+                    );
+                })
+                .map(r => writeFile(r.filePath, r.output))
+        );
+    }
+
+    /**
+     * Returns results that only contains errors.
+     * @param {LintResult[]} results The results to filter.
+     * @returns {LintResult[]} The filtered results.
+     */
+    static getErrorResults(results) {
+        return CLIEngine.getErrorResults(results);
+    }
+
+    /**
+     * Returns meta objects for each rule represented in the lint results.
+     * @param {LintResult[]} results The results to fetch rules meta for.
+     * @returns {Object} A mapping of ruleIds to rule meta objects.
+     */
+    getRulesMetaForResults(results) {
+
+        const resultRuleIds = new Set();
+
+        // first gather all ruleIds from all results
+
+        for (const result of results) {
+            for (const { ruleId } of result.messages) {
+                resultRuleIds.add(ruleId);
+            }
+            for (const { ruleId } of result.suppressedMessages) {
+                resultRuleIds.add(ruleId);
+            }
+        }
+
+        // create a map of all rules in the results
+
+        const { cliEngine } = privateMembersMap.get(this);
+        const rules = cliEngine.getRules();
+        const resultRules = new Map();
+
+        for (const [ruleId, rule] of rules) {
+            if (resultRuleIds.has(ruleId)) {
+                resultRules.set(ruleId, rule);
+            }
+        }
+
+        return createRulesMeta(resultRules);
+
+    }
+
+    /**
+     * Executes the current configuration on an array of file and directory names.
+     * @param {string[]} patterns An array of file and directory names.
+     * @returns {Promise<LintResult[]>} The results of linting the file patterns given.
+     */
+    async lintFiles(patterns) {
+        if (!isNonEmptyString(patterns) && !isArrayOfNonEmptyString(patterns)) {
+            throw new Error("'patterns' must be a non-empty string or an array of non-empty strings");
+        }
+        const { cliEngine } = privateMembersMap.get(this);
+
+        return processCLIEngineLintReport(
+            cliEngine,
+            cliEngine.executeOnFiles(patterns)
+        );
+    }
+
+    /**
+     * Executes the current configuration on text.
+     * @param {string} code A string of JavaScript code to lint.
+     * @param {Object} [options] The options.
+     * @param {string} [options.filePath] The path to the file of the source code.
+     * @param {boolean} [options.warnIgnored] When set to true, warn if given filePath is an ignored path.
+     * @returns {Promise<LintResult[]>} The results of linting the string of code given.
+     */
+    async lintText(code, options = {}) {
+        if (typeof code !== "string") {
+            throw new Error("'code' must be a string");
+        }
+        if (typeof options !== "object") {
+            throw new Error("'options' must be an object, null, or undefined");
+        }
+        const {
+            filePath,
+            warnIgnored = false,
+            ...unknownOptions
+        } = options || {};
+
+        const unknownOptionKeys = Object.keys(unknownOptions);
+
+        if (unknownOptionKeys.length > 0) {
+            throw new Error(`'options' must not include the unknown option(s): ${unknownOptionKeys.join(", ")}`);
+        }
+
+        if (filePath !== void 0 && !isNonEmptyString(filePath)) {
+            throw new Error("'options.filePath' must be a non-empty string or undefined");
+        }
+        if (typeof warnIgnored !== "boolean") {
+            throw new Error("'options.warnIgnored' must be a boolean or undefined");
+        }
+
+        const { cliEngine } = privateMembersMap.get(this);
+
+        return processCLIEngineLintReport(
+            cliEngine,
+            cliEngine.executeOnText(code, filePath, warnIgnored)
+        );
+    }
+
+    /**
+     * Returns the formatter representing the given formatter name.
+     * @param {string} [name] The name of the formatter to load.
+     * The following values are allowed:
+     * - `undefined` ... Load `stylish` builtin formatter.
+     * - A builtin formatter name ... Load the builtin formatter.
+     * - A third-party formatter name:
+     *   - `foo` → `eslint-formatter-foo`
+     *   - `@foo` → `@foo/eslint-formatter`
+     *   - `@foo/bar` → `@foo/eslint-formatter-bar`
+     * - A file path ... Load the file.
+     * @returns {Promise<LoadedFormatter>} A promise resolving to the formatter object.
+     * This promise will be rejected if the given formatter was not found or not
+     * a function.
+     */
+    async loadFormatter(name = "stylish") {
+        if (typeof name !== "string") {
+            throw new Error("'name' must be a string");
+        }
+
+        const { cliEngine, options } = privateMembersMap.get(this);
+        const formatter = cliEngine.getFormatter(name);
+
+        if (typeof formatter !== "function") {
+            throw new Error(`Formatter must be a function, but got a ${typeof formatter}.`);
+        }
+
+        return {
+
+            /**
+             * The main formatter method.
+             * @param {LintResult[]} results The lint results to format.
+             * @param {ResultsMeta} resultsMeta Warning count and max threshold.
+             * @returns {string | Promise<string>} The formatted lint results.
+             */
+            format(results, resultsMeta) {
+                let rulesMeta = null;
+
+                results.sort(compareResultsByFilePath);
+
+                return formatter(results, {
+                    ...resultsMeta,
+                    get cwd() {
+                        return options.cwd;
+                    },
+                    get rulesMeta() {
+                        if (!rulesMeta) {
+                            rulesMeta = createRulesMeta(cliEngine.getRules());
+                        }
+
+                        return rulesMeta;
+                    }
+                });
+            }
+        };
+    }
+
+    /**
+     * Returns a configuration object for the given file based on the CLI options.
+     * This is the same logic used by the ESLint CLI executable to determine
+     * configuration for each file it processes.
+     * @param {string} filePath The path of the file to retrieve a config object for.
+     * @returns {Promise<ConfigData>} A configuration object for the file.
+     */
+    async calculateConfigForFile(filePath) {
+        if (!isNonEmptyString(filePath)) {
+            throw new Error("'filePath' must be a non-empty string");
+        }
+        const { cliEngine } = privateMembersMap.get(this);
+
+        return cliEngine.getConfigForFile(filePath);
+    }
+
+    /**
+     * Checks if a given path is ignored by ESLint.
+     * @param {string} filePath The path of the file to check.
+     * @returns {Promise<boolean>} Whether or not the given path is ignored.
+     */
+    async isPathIgnored(filePath) {
+        if (!isNonEmptyString(filePath)) {
+            throw new Error("'filePath' must be a non-empty string");
+        }
+        const { cliEngine } = privateMembersMap.get(this);
+
+        return cliEngine.isPathIgnored(filePath);
+    }
+}
+
+/**
+ * The type of configuration used by this class.
+ * @type {string}
+ * @static
+ */
+ESLint.configType = "eslintrc";
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = {
+    ESLint,
+
+    /**
+     * Get the private class members of a given ESLint instance for tests.
+     * @param {ESLint} instance The ESLint instance to get.
+     * @returns {ESLintPrivateMembers} The instance's private class members.
+     */
+    getESLintPrivateMembers(instance) {
+        return privateMembersMap.get(instance);
+    }
+};
Index: frontend/node_modules/eslint/lib/eslint/flat-eslint.js
===================================================================
--- frontend/node_modules/eslint/lib/eslint/flat-eslint.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/eslint/flat-eslint.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,1159 @@
+/**
+ * @fileoverview Main class using flat config
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+// Note: Node.js 12 does not support fs/promises.
+const fs = require("fs").promises;
+const { existsSync } = require("fs");
+const path = require("path");
+const findUp = require("find-up");
+const { version } = require("../../package.json");
+const { Linter } = require("../linter");
+const { getRuleFromConfig } = require("../config/flat-config-helpers");
+const {
+    Legacy: {
+        ConfigOps: {
+            getRuleSeverity
+        },
+        ModuleResolver,
+        naming
+    }
+} = require("@eslint/eslintrc");
+
+const {
+    findFiles,
+    getCacheFile,
+
+    isNonEmptyString,
+    isArrayOfNonEmptyString,
+
+    createIgnoreResult,
+    isErrorMessage,
+
+    processOptions
+} = require("./eslint-helpers");
+const { pathToFileURL } = require("url");
+const { FlatConfigArray } = require("../config/flat-config-array");
+const LintResultCache = require("../cli-engine/lint-result-cache");
+
+/*
+ * This is necessary to allow overwriting writeFile for testing purposes.
+ * We can just use fs/promises once we drop Node.js 12 support.
+ */
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+// For VSCode IntelliSense
+/** @typedef {import("../shared/types").ConfigData} ConfigData */
+/** @typedef {import("../shared/types").DeprecatedRuleInfo} DeprecatedRuleInfo */
+/** @typedef {import("../shared/types").LintMessage} LintMessage */
+/** @typedef {import("../shared/types").LintResult} LintResult */
+/** @typedef {import("../shared/types").ParserOptions} ParserOptions */
+/** @typedef {import("../shared/types").Plugin} Plugin */
+/** @typedef {import("../shared/types").ResultsMeta} ResultsMeta */
+/** @typedef {import("../shared/types").RuleConf} RuleConf */
+/** @typedef {import("../shared/types").Rule} Rule */
+/** @typedef {ReturnType<ConfigArray.extractConfig>} ExtractedConfig */
+
+/**
+ * The options with which to configure the ESLint instance.
+ * @typedef {Object} FlatESLintOptions
+ * @property {boolean} [allowInlineConfig] Enable or disable inline configuration comments.
+ * @property {ConfigData} [baseConfig] Base config object, extended by all configs used with this instance
+ * @property {boolean} [cache] Enable result caching.
+ * @property {string} [cacheLocation] The cache file to use instead of .eslintcache.
+ * @property {"metadata" | "content"} [cacheStrategy] The strategy used to detect changed files.
+ * @property {string} [cwd] The value to use for the current working directory.
+ * @property {boolean} [errorOnUnmatchedPattern] If `false` then `ESLint#lintFiles()` doesn't throw even if no target files found. Defaults to `true`.
+ * @property {boolean|Function} [fix] Execute in autofix mode. If a function, should return a boolean.
+ * @property {string[]} [fixTypes] Array of rule types to apply fixes for.
+ * @property {boolean} [globInputPaths] Set to false to skip glob resolution of input file paths to lint (default: true). If false, each input file paths is assumed to be a non-glob path to an existing file.
+ * @property {boolean} [ignore] False disables all ignore patterns except for the default ones.
+ * @property {string[]} [ignorePatterns] Ignore file patterns to use in addition to config ignores. These patterns are relative to `cwd`.
+ * @property {ConfigData} [overrideConfig] Override config object, overrides all configs used with this instance
+ * @property {boolean|string} [overrideConfigFile] Searches for default config file when falsy;
+ *      doesn't do any config file lookup when `true`; considered to be a config filename
+ *      when a string.
+ * @property {Record<string,Plugin>} [plugins] An array of plugin implementations.
+ * @property {boolean} warnIgnored Show warnings when the file list includes ignored files
+ */
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const FLAT_CONFIG_FILENAMES = [
+    "eslint.config.js",
+    "eslint.config.mjs",
+    "eslint.config.cjs"
+];
+const debug = require("debug")("eslint:flat-eslint");
+const removedFormatters = new Set(["table", "codeframe"]);
+const privateMembers = new WeakMap();
+const importedConfigFileModificationTime = new Map();
+
+/**
+ * It will calculate the error and warning count for collection of messages per file
+ * @param {LintMessage[]} messages Collection of messages
+ * @returns {Object} Contains the stats
+ * @private
+ */
+function calculateStatsPerFile(messages) {
+    const stat = {
+        errorCount: 0,
+        fatalErrorCount: 0,
+        warningCount: 0,
+        fixableErrorCount: 0,
+        fixableWarningCount: 0
+    };
+
+    for (let i = 0; i < messages.length; i++) {
+        const message = messages[i];
+
+        if (message.fatal || message.severity === 2) {
+            stat.errorCount++;
+            if (message.fatal) {
+                stat.fatalErrorCount++;
+            }
+            if (message.fix) {
+                stat.fixableErrorCount++;
+            }
+        } else {
+            stat.warningCount++;
+            if (message.fix) {
+                stat.fixableWarningCount++;
+            }
+        }
+    }
+    return stat;
+}
+
+/**
+ * Create rulesMeta object.
+ * @param {Map<string,Rule>} rules a map of rules from which to generate the object.
+ * @returns {Object} metadata for all enabled rules.
+ */
+function createRulesMeta(rules) {
+    return Array.from(rules).reduce((retVal, [id, rule]) => {
+        retVal[id] = rule.meta;
+        return retVal;
+    }, {});
+}
+
+/**
+ * Return the absolute path of a file named `"__placeholder__.js"` in a given directory.
+ * This is used as a replacement for a missing file path.
+ * @param {string} cwd An absolute directory path.
+ * @returns {string} The absolute path of a file named `"__placeholder__.js"` in the given directory.
+ */
+function getPlaceholderPath(cwd) {
+    return path.join(cwd, "__placeholder__.js");
+}
+
+/** @type {WeakMap<ExtractedConfig, DeprecatedRuleInfo[]>} */
+const usedDeprecatedRulesCache = new WeakMap();
+
+/**
+ * Create used deprecated rule list.
+ * @param {CLIEngine} eslint The CLIEngine instance.
+ * @param {string} maybeFilePath The absolute path to a lint target file or `"<text>"`.
+ * @returns {DeprecatedRuleInfo[]} The used deprecated rule list.
+ */
+function getOrFindUsedDeprecatedRules(eslint, maybeFilePath) {
+    const {
+        configs,
+        options: { cwd }
+    } = privateMembers.get(eslint);
+    const filePath = path.isAbsolute(maybeFilePath)
+        ? maybeFilePath
+        : getPlaceholderPath(cwd);
+    const config = configs.getConfig(filePath);
+
+    // Most files use the same config, so cache it.
+    if (config && !usedDeprecatedRulesCache.has(config)) {
+        const retv = [];
+
+        if (config.rules) {
+            for (const [ruleId, ruleConf] of Object.entries(config.rules)) {
+                if (getRuleSeverity(ruleConf) === 0) {
+                    continue;
+                }
+                const rule = getRuleFromConfig(ruleId, config);
+                const meta = rule && rule.meta;
+
+                if (meta && meta.deprecated) {
+                    retv.push({ ruleId, replacedBy: meta.replacedBy || [] });
+                }
+            }
+        }
+
+
+        usedDeprecatedRulesCache.set(config, Object.freeze(retv));
+    }
+
+    return config ? usedDeprecatedRulesCache.get(config) : Object.freeze([]);
+}
+
+/**
+ * Processes the linting results generated by a CLIEngine linting report to
+ * match the ESLint class's API.
+ * @param {CLIEngine} eslint The CLIEngine instance.
+ * @param {CLIEngineLintReport} report The CLIEngine linting report to process.
+ * @returns {LintResult[]} The processed linting results.
+ */
+function processLintReport(eslint, { results }) {
+    const descriptor = {
+        configurable: true,
+        enumerable: true,
+        get() {
+            return getOrFindUsedDeprecatedRules(eslint, this.filePath);
+        }
+    };
+
+    for (const result of results) {
+        Object.defineProperty(result, "usedDeprecatedRules", descriptor);
+    }
+
+    return results;
+}
+
+/**
+ * An Array.prototype.sort() compatible compare function to order results by their file path.
+ * @param {LintResult} a The first lint result.
+ * @param {LintResult} b The second lint result.
+ * @returns {number} An integer representing the order in which the two results should occur.
+ */
+function compareResultsByFilePath(a, b) {
+    if (a.filePath < b.filePath) {
+        return -1;
+    }
+
+    if (a.filePath > b.filePath) {
+        return 1;
+    }
+
+    return 0;
+}
+
+/**
+ * Searches from the current working directory up until finding the
+ * given flat config filename.
+ * @param {string} cwd The current working directory to search from.
+ * @returns {Promise<string|undefined>} The filename if found or `undefined` if not.
+ */
+function findFlatConfigFile(cwd) {
+    return findUp(
+        FLAT_CONFIG_FILENAMES,
+        { cwd }
+    );
+}
+
+/**
+ * Load the config array from the given filename.
+ * @param {string} filePath The filename to load from.
+ * @returns {Promise<any>} The config loaded from the config file.
+ */
+async function loadFlatConfigFile(filePath) {
+    debug(`Loading config from ${filePath}`);
+
+    const fileURL = pathToFileURL(filePath);
+
+    debug(`Config file URL is ${fileURL}`);
+
+    const mtime = (await fs.stat(filePath)).mtime.getTime();
+
+    /*
+     * Append a query with the config file's modification time (`mtime`) in order
+     * to import the current version of the config file. Without the query, `import()` would
+     * cache the config file module by the pathname only, and then always return
+     * the same version (the one that was actual when the module was imported for the first time).
+     *
+     * This ensures that the config file module is loaded and executed again
+     * if it has been changed since the last time it was imported.
+     * If it hasn't been changed, `import()` will just return the cached version.
+     *
+     * Note that we should not overuse queries (e.g., by appending the current time
+     * to always reload the config file module) as that could cause memory leaks
+     * because entries are never removed from the import cache.
+     */
+    fileURL.searchParams.append("mtime", mtime);
+
+    /*
+     * With queries, we can bypass the import cache. However, when import-ing a CJS module,
+     * Node.js uses the require infrastructure under the hood. That includes the require cache,
+     * which caches the config file module by its file path (queries have no effect).
+     * Therefore, we also need to clear the require cache before importing the config file module.
+     * In order to get the same behavior with ESM and CJS config files, in particular - to reload
+     * the config file only if it has been changed, we track file modification times and clear
+     * the require cache only if the file has been changed.
+     */
+    if (importedConfigFileModificationTime.get(filePath) !== mtime) {
+        delete require.cache[filePath];
+    }
+
+    const config = (await import(fileURL)).default;
+
+    importedConfigFileModificationTime.set(filePath, mtime);
+
+    return config;
+}
+
+/**
+ * Determines which config file to use. This is determined by seeing if an
+ * override config file was passed, and if so, using it; otherwise, as long
+ * as override config file is not explicitly set to `false`, it will search
+ * upwards from the cwd for a file named `eslint.config.js`.
+ * @param {import("./eslint").ESLintOptions} options The ESLint instance options.
+ * @returns {{configFilePath:string|undefined,basePath:string,error:Error|null}} Location information for
+ *      the config file.
+ */
+async function locateConfigFileToUse({ configFile, cwd }) {
+
+    // determine where to load config file from
+    let configFilePath;
+    let basePath = cwd;
+    let error = null;
+
+    if (typeof configFile === "string") {
+        debug(`Override config file path is ${configFile}`);
+        configFilePath = path.resolve(cwd, configFile);
+    } else if (configFile !== false) {
+        debug("Searching for eslint.config.js");
+        configFilePath = await findFlatConfigFile(cwd);
+
+        if (configFilePath) {
+            basePath = path.resolve(path.dirname(configFilePath));
+        } else {
+            error = new Error("Could not find config file.");
+        }
+
+    }
+
+    return {
+        configFilePath,
+        basePath,
+        error
+    };
+
+}
+
+/**
+ * Calculates the config array for this run based on inputs.
+ * @param {FlatESLint} eslint The instance to create the config array for.
+ * @param {import("./eslint").ESLintOptions} options The ESLint instance options.
+ * @returns {FlatConfigArray} The config array for `eslint``.
+ */
+async function calculateConfigArray(eslint, {
+    cwd,
+    baseConfig,
+    overrideConfig,
+    configFile,
+    ignore: shouldIgnore,
+    ignorePatterns
+}) {
+
+    // check for cached instance
+    const slots = privateMembers.get(eslint);
+
+    if (slots.configs) {
+        return slots.configs;
+    }
+
+    const { configFilePath, basePath, error } = await locateConfigFileToUse({ configFile, cwd });
+
+    // config file is required to calculate config
+    if (error) {
+        throw error;
+    }
+
+    const configs = new FlatConfigArray(baseConfig || [], { basePath, shouldIgnore });
+
+    // load config file
+    if (configFilePath) {
+        const fileConfig = await loadFlatConfigFile(configFilePath);
+
+        if (Array.isArray(fileConfig)) {
+            configs.push(...fileConfig);
+        } else {
+            configs.push(fileConfig);
+        }
+    }
+
+    // add in any configured defaults
+    configs.push(...slots.defaultConfigs);
+
+    // append command line ignore patterns
+    if (ignorePatterns && ignorePatterns.length > 0) {
+
+        let relativeIgnorePatterns;
+
+        /*
+         * If the config file basePath is different than the cwd, then
+         * the ignore patterns won't work correctly. Here, we adjust the
+         * ignore pattern to include the correct relative path. Patterns
+         * passed as `ignorePatterns` are relative to the cwd, whereas
+         * the config file basePath can be an ancestor of the cwd.
+         */
+        if (basePath === cwd) {
+            relativeIgnorePatterns = ignorePatterns;
+        } else {
+
+            const relativeIgnorePath = path.relative(basePath, cwd);
+
+            relativeIgnorePatterns = ignorePatterns.map(pattern => {
+                const negated = pattern.startsWith("!");
+                const basePattern = negated ? pattern.slice(1) : pattern;
+
+                return (negated ? "!" : "") +
+                path.posix.join(relativeIgnorePath, basePattern);
+            });
+        }
+
+        /*
+         * Ignore patterns are added to the end of the config array
+         * so they can override default ignores.
+         */
+        configs.push({
+            ignores: relativeIgnorePatterns
+        });
+    }
+
+    if (overrideConfig) {
+        if (Array.isArray(overrideConfig)) {
+            configs.push(...overrideConfig);
+        } else {
+            configs.push(overrideConfig);
+        }
+    }
+
+    await configs.normalize();
+
+    // cache the config array for this instance
+    slots.configs = configs;
+
+    return configs;
+}
+
+/**
+ * Processes an source code using ESLint.
+ * @param {Object} config The config object.
+ * @param {string} config.text The source code to verify.
+ * @param {string} config.cwd The path to the current working directory.
+ * @param {string|undefined} config.filePath The path to the file of `text`. If this is undefined, it uses `<text>`.
+ * @param {FlatConfigArray} config.configs The config.
+ * @param {boolean} config.fix If `true` then it does fix.
+ * @param {boolean} config.allowInlineConfig If `true` then it uses directive comments.
+ * @param {Linter} config.linter The linter instance to verify.
+ * @returns {LintResult} The result of linting.
+ * @private
+ */
+function verifyText({
+    text,
+    cwd,
+    filePath: providedFilePath,
+    configs,
+    fix,
+    allowInlineConfig,
+    linter
+}) {
+    const filePath = providedFilePath || "<text>";
+
+    debug(`Lint ${filePath}`);
+
+    /*
+     * Verify.
+     * `config.extractConfig(filePath)` requires an absolute path, but `linter`
+     * doesn't know CWD, so it gives `linter` an absolute path always.
+     */
+    const filePathToVerify = filePath === "<text>" ? getPlaceholderPath(cwd) : filePath;
+    const { fixed, messages, output } = linter.verifyAndFix(
+        text,
+        configs,
+        {
+            allowInlineConfig,
+            filename: filePathToVerify,
+            fix,
+
+            /**
+             * Check if the linter should adopt a given code block or not.
+             * @param {string} blockFilename The virtual filename of a code block.
+             * @returns {boolean} `true` if the linter should adopt the code block.
+             */
+            filterCodeBlock(blockFilename) {
+                return configs.getConfig(blockFilename) !== void 0;
+            }
+        }
+    );
+
+    // Tweak and return.
+    const result = {
+        filePath: filePath === "<text>" ? filePath : path.resolve(filePath),
+        messages,
+        suppressedMessages: linter.getSuppressedMessages(),
+        ...calculateStatsPerFile(messages)
+    };
+
+    if (fixed) {
+        result.output = output;
+    }
+
+    if (
+        result.errorCount + result.warningCount > 0 &&
+        typeof result.output === "undefined"
+    ) {
+        result.source = text;
+    }
+
+    return result;
+}
+
+/**
+ * Checks whether a message's rule type should be fixed.
+ * @param {LintMessage} message The message to check.
+ * @param {FlatConfig} config The config for the file that generated the message.
+ * @param {string[]} fixTypes An array of fix types to check.
+ * @returns {boolean} Whether the message should be fixed.
+ */
+function shouldMessageBeFixed(message, config, fixTypes) {
+    if (!message.ruleId) {
+        return fixTypes.has("directive");
+    }
+
+    const rule = message.ruleId && getRuleFromConfig(message.ruleId, config);
+
+    return Boolean(rule && rule.meta && fixTypes.has(rule.meta.type));
+}
+
+/**
+ * Creates an error to be thrown when an array of results passed to `getRulesMetaForResults` was not created by the current engine.
+ * @returns {TypeError} An error object.
+ */
+function createExtraneousResultsError() {
+    return new TypeError("Results object was not created from this ESLint instance.");
+}
+
+/**
+ * Creates a fixer function based on the provided fix, fixTypesSet, and config.
+ * @param {Function|boolean} fix The original fix option.
+ * @param {Set<string>} fixTypesSet A set of fix types to filter messages for fixing.
+ * @param {FlatConfig} config The config for the file that generated the message.
+ * @returns {Function|boolean} The fixer function or the original fix value.
+ */
+function getFixerForFixTypes(fix, fixTypesSet, config) {
+    if (!fix || !fixTypesSet) {
+        return fix;
+    }
+
+    const originalFix = (typeof fix === "function") ? fix : () => true;
+
+    return message => shouldMessageBeFixed(message, config, fixTypesSet) && originalFix(message);
+}
+
+//-----------------------------------------------------------------------------
+// Main API
+//-----------------------------------------------------------------------------
+
+/**
+ * Primary Node.js API for ESLint.
+ */
+class FlatESLint {
+
+    /**
+     * Creates a new instance of the main ESLint API.
+     * @param {FlatESLintOptions} options The options for this instance.
+     */
+    constructor(options = {}) {
+
+        const defaultConfigs = [];
+        const processedOptions = processOptions(options);
+        const linter = new Linter({
+            cwd: processedOptions.cwd,
+            configType: "flat"
+        });
+
+        const cacheFilePath = getCacheFile(
+            processedOptions.cacheLocation,
+            processedOptions.cwd
+        );
+
+        const lintResultCache = processedOptions.cache
+            ? new LintResultCache(cacheFilePath, processedOptions.cacheStrategy)
+            : null;
+
+        privateMembers.set(this, {
+            options: processedOptions,
+            linter,
+            cacheFilePath,
+            lintResultCache,
+            defaultConfigs,
+            configs: null
+        });
+
+        /**
+         * If additional plugins are passed in, add that to the default
+         * configs for this instance.
+         */
+        if (options.plugins) {
+
+            const plugins = {};
+
+            for (const [pluginName, plugin] of Object.entries(options.plugins)) {
+                plugins[naming.getShorthandName(pluginName, "eslint-plugin")] = plugin;
+            }
+
+            defaultConfigs.push({
+                plugins
+            });
+        }
+
+    }
+
+    /**
+     * The version text.
+     * @type {string}
+     */
+    static get version() {
+        return version;
+    }
+
+    /**
+     * Outputs fixes from the given results to files.
+     * @param {LintResult[]} results The lint results.
+     * @returns {Promise<void>} Returns a promise that is used to track side effects.
+     */
+    static async outputFixes(results) {
+        if (!Array.isArray(results)) {
+            throw new Error("'results' must be an array");
+        }
+
+        await Promise.all(
+            results
+                .filter(result => {
+                    if (typeof result !== "object" || result === null) {
+                        throw new Error("'results' must include only objects");
+                    }
+                    return (
+                        typeof result.output === "string" &&
+                        path.isAbsolute(result.filePath)
+                    );
+                })
+                .map(r => fs.writeFile(r.filePath, r.output))
+        );
+    }
+
+    /**
+     * Returns results that only contains errors.
+     * @param {LintResult[]} results The results to filter.
+     * @returns {LintResult[]} The filtered results.
+     */
+    static getErrorResults(results) {
+        const filtered = [];
+
+        results.forEach(result => {
+            const filteredMessages = result.messages.filter(isErrorMessage);
+            const filteredSuppressedMessages = result.suppressedMessages.filter(isErrorMessage);
+
+            if (filteredMessages.length > 0) {
+                filtered.push({
+                    ...result,
+                    messages: filteredMessages,
+                    suppressedMessages: filteredSuppressedMessages,
+                    errorCount: filteredMessages.length,
+                    warningCount: 0,
+                    fixableErrorCount: result.fixableErrorCount,
+                    fixableWarningCount: 0
+                });
+            }
+        });
+
+        return filtered;
+    }
+
+    /**
+     * Returns meta objects for each rule represented in the lint results.
+     * @param {LintResult[]} results The results to fetch rules meta for.
+     * @returns {Object} A mapping of ruleIds to rule meta objects.
+     * @throws {TypeError} When the results object wasn't created from this ESLint instance.
+     * @throws {TypeError} When a plugin or rule is missing.
+     */
+    getRulesMetaForResults(results) {
+
+        // short-circuit simple case
+        if (results.length === 0) {
+            return {};
+        }
+
+        const resultRules = new Map();
+        const {
+            configs,
+            options: { cwd }
+        } = privateMembers.get(this);
+
+        /*
+         * We can only accurately return rules meta information for linting results if the
+         * results were created by this instance. Otherwise, the necessary rules data is
+         * not available. So if the config array doesn't already exist, just throw an error
+         * to let the user know we can't do anything here.
+         */
+        if (!configs) {
+            throw createExtraneousResultsError();
+        }
+
+        for (const result of results) {
+
+            /*
+             * Normalize filename for <text>.
+             */
+            const filePath = result.filePath === "<text>"
+                ? getPlaceholderPath(cwd) : result.filePath;
+            const allMessages = result.messages.concat(result.suppressedMessages);
+
+            for (const { ruleId } of allMessages) {
+                if (!ruleId) {
+                    continue;
+                }
+
+                /*
+                 * All of the plugin and rule information is contained within the
+                 * calculated config for the given file.
+                 */
+                const config = configs.getConfig(filePath);
+
+                if (!config) {
+                    throw createExtraneousResultsError();
+                }
+                const rule = getRuleFromConfig(ruleId, config);
+
+                // ignore unknown rules
+                if (rule) {
+                    resultRules.set(ruleId, rule);
+                }
+            }
+        }
+
+        return createRulesMeta(resultRules);
+    }
+
+    /**
+     * Executes the current configuration on an array of file and directory names.
+     * @param {string|string[]} patterns An array of file and directory names.
+     * @returns {Promise<LintResult[]>} The results of linting the file patterns given.
+     */
+    async lintFiles(patterns) {
+        if (!isNonEmptyString(patterns) && !isArrayOfNonEmptyString(patterns)) {
+            throw new Error("'patterns' must be a non-empty string or an array of non-empty strings");
+        }
+
+        const {
+            cacheFilePath,
+            lintResultCache,
+            linter,
+            options: eslintOptions
+        } = privateMembers.get(this);
+        const configs = await calculateConfigArray(this, eslintOptions);
+        const {
+            allowInlineConfig,
+            cache,
+            cwd,
+            fix,
+            fixTypes,
+            globInputPaths,
+            errorOnUnmatchedPattern,
+            warnIgnored
+        } = eslintOptions;
+        const startTime = Date.now();
+        const fixTypesSet = fixTypes ? new Set(fixTypes) : null;
+
+        // Delete cache file; should this be done here?
+        if (!cache && cacheFilePath) {
+            debug(`Deleting cache file at ${cacheFilePath}`);
+
+            try {
+                await fs.unlink(cacheFilePath);
+            } catch (error) {
+                const errorCode = error && error.code;
+
+                // Ignore errors when no such file exists or file system is read only (and cache file does not exist)
+                if (errorCode !== "ENOENT" && !(errorCode === "EROFS" && !existsSync(cacheFilePath))) {
+                    throw error;
+                }
+            }
+        }
+
+        const filePaths = await findFiles({
+            patterns: typeof patterns === "string" ? [patterns] : patterns,
+            cwd,
+            globInputPaths,
+            configs,
+            errorOnUnmatchedPattern
+        });
+
+        debug(`${filePaths.length} files found in: ${Date.now() - startTime}ms`);
+
+        /*
+         * Because we need to process multiple files, including reading from disk,
+         * it is most efficient to start by reading each file via promises so that
+         * they can be done in parallel. Then, we can lint the returned text. This
+         * ensures we are waiting the minimum amount of time in between lints.
+         */
+        const results = await Promise.all(
+
+            filePaths.map(filePath => {
+
+                const config = configs.getConfig(filePath);
+
+                /*
+                 * If a filename was entered that cannot be matched
+                 * to a config, then notify the user.
+                 */
+                if (!config) {
+                    if (warnIgnored) {
+                        return createIgnoreResult(filePath, cwd);
+                    }
+
+                    return void 0;
+                }
+
+                // Skip if there is cached result.
+                if (lintResultCache) {
+                    const cachedResult =
+                        lintResultCache.getCachedLintResults(filePath, config);
+
+                    if (cachedResult) {
+                        const hadMessages =
+                            cachedResult.messages &&
+                            cachedResult.messages.length > 0;
+
+                        if (hadMessages && fix) {
+                            debug(`Reprocessing cached file to allow autofix: ${filePath}`);
+                        } else {
+                            debug(`Skipping file since it hasn't changed: ${filePath}`);
+                            return cachedResult;
+                        }
+                    }
+                }
+
+
+                // set up fixer for fixTypes if necessary
+                const fixer = getFixerForFixTypes(fix, fixTypesSet, config);
+
+                return fs.readFile(filePath, "utf8")
+                    .then(text => {
+
+                        // do the linting
+                        const result = verifyText({
+                            text,
+                            filePath,
+                            configs,
+                            cwd,
+                            fix: fixer,
+                            allowInlineConfig,
+                            linter
+                        });
+
+                        /*
+                         * Store the lint result in the LintResultCache.
+                         * NOTE: The LintResultCache will remove the file source and any
+                         * other properties that are difficult to serialize, and will
+                         * hydrate those properties back in on future lint runs.
+                         */
+                        if (lintResultCache) {
+                            lintResultCache.setCachedLintResults(filePath, config, result);
+                        }
+
+                        return result;
+                    });
+
+            })
+        );
+
+        // Persist the cache to disk.
+        if (lintResultCache) {
+            lintResultCache.reconcile();
+        }
+
+        const finalResults = results.filter(result => !!result);
+
+        return processLintReport(this, {
+            results: finalResults
+        });
+    }
+
+    /**
+     * Executes the current configuration on text.
+     * @param {string} code A string of JavaScript code to lint.
+     * @param {Object} [options] The options.
+     * @param {string} [options.filePath] The path to the file of the source code.
+     * @param {boolean} [options.warnIgnored] When set to true, warn if given filePath is an ignored path.
+     * @returns {Promise<LintResult[]>} The results of linting the string of code given.
+     */
+    async lintText(code, options = {}) {
+
+        // Parameter validation
+
+        if (typeof code !== "string") {
+            throw new Error("'code' must be a string");
+        }
+
+        if (typeof options !== "object") {
+            throw new Error("'options' must be an object, null, or undefined");
+        }
+
+        // Options validation
+
+        const {
+            filePath,
+            warnIgnored,
+            ...unknownOptions
+        } = options || {};
+
+        const unknownOptionKeys = Object.keys(unknownOptions);
+
+        if (unknownOptionKeys.length > 0) {
+            throw new Error(`'options' must not include the unknown option(s): ${unknownOptionKeys.join(", ")}`);
+        }
+
+        if (filePath !== void 0 && !isNonEmptyString(filePath)) {
+            throw new Error("'options.filePath' must be a non-empty string or undefined");
+        }
+
+        if (typeof warnIgnored !== "boolean" && typeof warnIgnored !== "undefined") {
+            throw new Error("'options.warnIgnored' must be a boolean or undefined");
+        }
+
+        // Now we can get down to linting
+
+        const {
+            linter,
+            options: eslintOptions
+        } = privateMembers.get(this);
+        const configs = await calculateConfigArray(this, eslintOptions);
+        const {
+            allowInlineConfig,
+            cwd,
+            fix,
+            fixTypes,
+            warnIgnored: constructorWarnIgnored
+        } = eslintOptions;
+        const results = [];
+        const startTime = Date.now();
+        const fixTypesSet = fixTypes ? new Set(fixTypes) : null;
+        const resolvedFilename = path.resolve(cwd, filePath || "__placeholder__.js");
+        const config = configs.getConfig(resolvedFilename);
+
+        const fixer = getFixerForFixTypes(fix, fixTypesSet, config);
+
+        // Clear the last used config arrays.
+        if (resolvedFilename && await this.isPathIgnored(resolvedFilename)) {
+            const shouldWarnIgnored = typeof warnIgnored === "boolean" ? warnIgnored : constructorWarnIgnored;
+
+            if (shouldWarnIgnored) {
+                results.push(createIgnoreResult(resolvedFilename, cwd));
+            }
+        } else {
+
+            // Do lint.
+            results.push(verifyText({
+                text: code,
+                filePath: resolvedFilename.endsWith("__placeholder__.js") ? "<text>" : resolvedFilename,
+                configs,
+                cwd,
+                fix: fixer,
+                allowInlineConfig,
+                linter
+            }));
+        }
+
+        debug(`Linting complete in: ${Date.now() - startTime}ms`);
+
+        return processLintReport(this, {
+            results
+        });
+
+    }
+
+    /**
+     * Returns the formatter representing the given formatter name.
+     * @param {string} [name] The name of the formatter to load.
+     * The following values are allowed:
+     * - `undefined` ... Load `stylish` builtin formatter.
+     * - A builtin formatter name ... Load the builtin formatter.
+     * - A third-party formatter name:
+     *   - `foo` → `eslint-formatter-foo`
+     *   - `@foo` → `@foo/eslint-formatter`
+     *   - `@foo/bar` → `@foo/eslint-formatter-bar`
+     * - A file path ... Load the file.
+     * @returns {Promise<Formatter>} A promise resolving to the formatter object.
+     * This promise will be rejected if the given formatter was not found or not
+     * a function.
+     */
+    async loadFormatter(name = "stylish") {
+        if (typeof name !== "string") {
+            throw new Error("'name' must be a string");
+        }
+
+        // replace \ with / for Windows compatibility
+        const normalizedFormatName = name.replace(/\\/gu, "/");
+        const namespace = naming.getNamespaceFromTerm(normalizedFormatName);
+
+        // grab our options
+        const { cwd } = privateMembers.get(this).options;
+
+
+        let formatterPath;
+
+        // if there's a slash, then it's a file (TODO: this check seems dubious for scoped npm packages)
+        if (!namespace && normalizedFormatName.includes("/")) {
+            formatterPath = path.resolve(cwd, normalizedFormatName);
+        } else {
+            try {
+                const npmFormat = naming.normalizePackageName(normalizedFormatName, "eslint-formatter");
+
+                // TODO: This is pretty dirty...would be nice to clean up at some point.
+                formatterPath = ModuleResolver.resolve(npmFormat, getPlaceholderPath(cwd));
+            } catch {
+                formatterPath = path.resolve(__dirname, "../", "cli-engine", "formatters", `${normalizedFormatName}.js`);
+            }
+        }
+
+        let formatter;
+
+        try {
+            formatter = (await import(pathToFileURL(formatterPath))).default;
+        } catch (ex) {
+
+            // check for formatters that have been removed
+            if (removedFormatters.has(name)) {
+                ex.message = `The ${name} formatter is no longer part of core ESLint. Install it manually with \`npm install -D eslint-formatter-${name}\``;
+            } else {
+                ex.message = `There was a problem loading formatter: ${formatterPath}\nError: ${ex.message}`;
+            }
+
+            throw ex;
+        }
+
+
+        if (typeof formatter !== "function") {
+            throw new TypeError(`Formatter must be a function, but got a ${typeof formatter}.`);
+        }
+
+        const eslint = this;
+
+        return {
+
+            /**
+             * The main formatter method.
+             * @param {LintResults[]} results The lint results to format.
+             * @param {ResultsMeta} resultsMeta Warning count and max threshold.
+             * @returns {string} The formatted lint results.
+             */
+            format(results, resultsMeta) {
+                let rulesMeta = null;
+
+                results.sort(compareResultsByFilePath);
+
+                return formatter(results, {
+                    ...resultsMeta,
+                    cwd,
+                    get rulesMeta() {
+                        if (!rulesMeta) {
+                            rulesMeta = eslint.getRulesMetaForResults(results);
+                        }
+
+                        return rulesMeta;
+                    }
+                });
+            }
+        };
+    }
+
+    /**
+     * Returns a configuration object for the given file based on the CLI options.
+     * This is the same logic used by the ESLint CLI executable to determine
+     * configuration for each file it processes.
+     * @param {string} filePath The path of the file to retrieve a config object for.
+     * @returns {Promise<ConfigData|undefined>} A configuration object for the file
+     *      or `undefined` if there is no configuration data for the object.
+     */
+    async calculateConfigForFile(filePath) {
+        if (!isNonEmptyString(filePath)) {
+            throw new Error("'filePath' must be a non-empty string");
+        }
+        const options = privateMembers.get(this).options;
+        const absolutePath = path.resolve(options.cwd, filePath);
+        const configs = await calculateConfigArray(this, options);
+
+        return configs.getConfig(absolutePath);
+    }
+
+    /**
+     * Finds the config file being used by this instance based on the options
+     * passed to the constructor.
+     * @returns {string|undefined} The path to the config file being used or
+     *      `undefined` if no config file is being used.
+     */
+    async findConfigFile() {
+        const options = privateMembers.get(this).options;
+        const { configFilePath } = await locateConfigFileToUse(options);
+
+        return configFilePath;
+    }
+
+    /**
+     * Checks if a given path is ignored by ESLint.
+     * @param {string} filePath The path of the file to check.
+     * @returns {Promise<boolean>} Whether or not the given path is ignored.
+     */
+    async isPathIgnored(filePath) {
+        const config = await this.calculateConfigForFile(filePath);
+
+        return config === void 0;
+    }
+}
+
+/**
+ * The type of configuration used by this class.
+ * @type {string}
+ * @static
+ */
+FlatESLint.configType = "flat";
+
+/**
+ * Returns whether flat config should be used.
+ * @param {Object} [options] The options for this function.
+ * @param {string} [options.cwd] The current working directory.
+ * @returns {Promise<boolean>} Whether flat config should be used.
+ */
+async function shouldUseFlatConfig({ cwd = process.cwd() } = {}) {
+    switch (process.env.ESLINT_USE_FLAT_CONFIG) {
+        case "true":
+            return true;
+        case "false":
+            return false;
+        default:
+
+            /*
+             * If neither explicitly enabled nor disabled, then use the presence
+             * of a flat config file to determine enablement.
+             */
+            return !!(await findFlatConfigFile(cwd));
+    }
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = {
+    FlatESLint,
+    shouldUseFlatConfig
+};
Index: frontend/node_modules/eslint/lib/eslint/index.js
===================================================================
--- frontend/node_modules/eslint/lib/eslint/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/eslint/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,9 @@
+"use strict";
+
+const { ESLint } = require("./eslint");
+const { FlatESLint } = require("./flat-eslint");
+
+module.exports = {
+    ESLint,
+    FlatESLint
+};
Index: frontend/node_modules/eslint/lib/linter/apply-disable-directives.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/apply-disable-directives.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/apply-disable-directives.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,465 @@
+/**
+ * @fileoverview A module that filters reported problems based on `eslint-disable` and `eslint-enable` comments
+ * @author Teddy Katz
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/** @typedef {import("../shared/types").LintMessage} LintMessage */
+
+//------------------------------------------------------------------------------
+// Module Definition
+//------------------------------------------------------------------------------
+
+const escapeRegExp = require("escape-string-regexp");
+
+/**
+ * Compares the locations of two objects in a source file
+ * @param {{line: number, column: number}} itemA The first object
+ * @param {{line: number, column: number}} itemB The second object
+ * @returns {number} A value less than 1 if itemA appears before itemB in the source file, greater than 1 if
+ * itemA appears after itemB in the source file, or 0 if itemA and itemB have the same location.
+ */
+function compareLocations(itemA, itemB) {
+    return itemA.line - itemB.line || itemA.column - itemB.column;
+}
+
+/**
+ * Groups a set of directives into sub-arrays by their parent comment.
+ * @param {Iterable<Directive>} directives Unused directives to be removed.
+ * @returns {Directive[][]} Directives grouped by their parent comment.
+ */
+function groupByParentComment(directives) {
+    const groups = new Map();
+
+    for (const directive of directives) {
+        const { unprocessedDirective: { parentComment } } = directive;
+
+        if (groups.has(parentComment)) {
+            groups.get(parentComment).push(directive);
+        } else {
+            groups.set(parentComment, [directive]);
+        }
+    }
+
+    return [...groups.values()];
+}
+
+/**
+ * Creates removal details for a set of directives within the same comment.
+ * @param {Directive[]} directives Unused directives to be removed.
+ * @param {Token} commentToken The backing Comment token.
+ * @returns {{ description, fix, unprocessedDirective }[]} Details for later creation of output Problems.
+ */
+function createIndividualDirectivesRemoval(directives, commentToken) {
+
+    /*
+     * `commentToken.value` starts right after `//` or `/*`.
+     * All calculated offsets will be relative to this index.
+     */
+    const commentValueStart = commentToken.range[0] + "//".length;
+
+    // Find where the list of rules starts. `\S+` matches with the directive name (e.g. `eslint-disable-line`)
+    const listStartOffset = /^\s*\S+\s+/u.exec(commentToken.value)[0].length;
+
+    /*
+     * Get the list text without any surrounding whitespace. In order to preserve the original
+     * formatting, we don't want to change that whitespace.
+     *
+     *     // eslint-disable-line rule-one , rule-two , rule-three -- comment
+     *                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+     */
+    const listText = commentToken.value
+        .slice(listStartOffset) // remove directive name and all whitespace before the list
+        .split(/\s-{2,}\s/u)[0] // remove `-- comment`, if it exists
+        .trimEnd(); // remove all whitespace after the list
+
+    /*
+     * We can assume that `listText` contains multiple elements.
+     * Otherwise, this function wouldn't be called - if there is
+     * only one rule in the list, then the whole comment must be removed.
+     */
+
+    return directives.map(directive => {
+        const { ruleId } = directive;
+
+        const regex = new RegExp(String.raw`(?:^|\s*,\s*)(?<quote>['"]?)${escapeRegExp(ruleId)}\k<quote>(?:\s*,\s*|$)`, "u");
+        const match = regex.exec(listText);
+        const matchedText = match[0];
+        const matchStartOffset = listStartOffset + match.index;
+        const matchEndOffset = matchStartOffset + matchedText.length;
+
+        const firstIndexOfComma = matchedText.indexOf(",");
+        const lastIndexOfComma = matchedText.lastIndexOf(",");
+
+        let removalStartOffset, removalEndOffset;
+
+        if (firstIndexOfComma !== lastIndexOfComma) {
+
+            /*
+             * Since there are two commas, this must one of the elements in the middle of the list.
+             * Matched range starts where the previous rule name ends, and ends where the next rule name starts.
+             *
+             *     // eslint-disable-line rule-one , rule-two , rule-three -- comment
+             *                                    ^^^^^^^^^^^^^^
+             *
+             * We want to remove only the content between the two commas, and also one of the commas.
+             *
+             *     // eslint-disable-line rule-one , rule-two , rule-three -- comment
+             *                                     ^^^^^^^^^^^
+             */
+            removalStartOffset = matchStartOffset + firstIndexOfComma;
+            removalEndOffset = matchStartOffset + lastIndexOfComma;
+
+        } else {
+
+            /*
+             * This is either the first element or the last element.
+             *
+             * If this is the first element, matched range starts where the first rule name starts
+             * and ends where the second rule name starts. This is exactly the range we want
+             * to remove so that the second rule name will start where the first one was starting
+             * and thus preserve the original formatting.
+             *
+             *     // eslint-disable-line rule-one , rule-two , rule-three -- comment
+             *                            ^^^^^^^^^^^
+             *
+             * Similarly, if this is the last element, we've already matched the range we want to
+             * remove. The previous rule name will end where the last one was ending, relative
+             * to the content on the right side.
+             *
+             *     // eslint-disable-line rule-one , rule-two , rule-three -- comment
+             *                                               ^^^^^^^^^^^^^
+             */
+            removalStartOffset = matchStartOffset;
+            removalEndOffset = matchEndOffset;
+        }
+
+        return {
+            description: `'${ruleId}'`,
+            fix: {
+                range: [
+                    commentValueStart + removalStartOffset,
+                    commentValueStart + removalEndOffset
+                ],
+                text: ""
+            },
+            unprocessedDirective: directive.unprocessedDirective
+        };
+    });
+}
+
+/**
+ * Creates a description of deleting an entire unused disable comment.
+ * @param {Directive[]} directives Unused directives to be removed.
+ * @param {Token} commentToken The backing Comment token.
+ * @returns {{ description, fix, unprocessedDirective }} Details for later creation of an output Problem.
+ */
+function createCommentRemoval(directives, commentToken) {
+    const { range } = commentToken;
+    const ruleIds = directives.filter(directive => directive.ruleId).map(directive => `'${directive.ruleId}'`);
+
+    return {
+        description: ruleIds.length <= 2
+            ? ruleIds.join(" or ")
+            : `${ruleIds.slice(0, ruleIds.length - 1).join(", ")}, or ${ruleIds[ruleIds.length - 1]}`,
+        fix: {
+            range,
+            text: " "
+        },
+        unprocessedDirective: directives[0].unprocessedDirective
+    };
+}
+
+/**
+ * Parses details from directives to create output Problems.
+ * @param {Iterable<Directive>} allDirectives Unused directives to be removed.
+ * @returns {{ description, fix, unprocessedDirective }[]} Details for later creation of output Problems.
+ */
+function processUnusedDirectives(allDirectives) {
+    const directiveGroups = groupByParentComment(allDirectives);
+
+    return directiveGroups.flatMap(
+        directives => {
+            const { parentComment } = directives[0].unprocessedDirective;
+            const remainingRuleIds = new Set(parentComment.ruleIds);
+
+            for (const directive of directives) {
+                remainingRuleIds.delete(directive.ruleId);
+            }
+
+            return remainingRuleIds.size
+                ? createIndividualDirectivesRemoval(directives, parentComment.commentToken)
+                : [createCommentRemoval(directives, parentComment.commentToken)];
+        }
+    );
+}
+
+/**
+ * Collect eslint-enable comments that are removing suppressions by eslint-disable comments.
+ * @param {Directive[]} directives The directives to check.
+ * @returns {Set<Directive>} The used eslint-enable comments
+ */
+function collectUsedEnableDirectives(directives) {
+
+    /**
+     * A Map of `eslint-enable` keyed by ruleIds that may be marked as used.
+     * If `eslint-enable` does not have a ruleId, the key will be `null`.
+     * @type {Map<string|null, Directive>}
+     */
+    const enabledRules = new Map();
+
+    /**
+     * A Set of `eslint-enable` marked as used.
+     * It is also the return value of `collectUsedEnableDirectives` function.
+     * @type {Set<Directive>}
+     */
+    const usedEnableDirectives = new Set();
+
+    /*
+     * Checks the directives backwards to see if the encountered `eslint-enable` is used by the previous `eslint-disable`,
+     * and if so, stores the `eslint-enable` in `usedEnableDirectives`.
+     */
+    for (let index = directives.length - 1; index >= 0; index--) {
+        const directive = directives[index];
+
+        if (directive.type === "disable") {
+            if (enabledRules.size === 0) {
+                continue;
+            }
+            if (directive.ruleId === null) {
+
+                // If encounter `eslint-disable` without ruleId,
+                // mark all `eslint-enable` currently held in enabledRules as used.
+                // e.g.
+                //    /* eslint-disable */ <- current directive
+                //    /* eslint-enable rule-id1 */ <- used
+                //    /* eslint-enable rule-id2 */ <- used
+                //    /* eslint-enable */ <- used
+                for (const enableDirective of enabledRules.values()) {
+                    usedEnableDirectives.add(enableDirective);
+                }
+                enabledRules.clear();
+            } else {
+                const enableDirective = enabledRules.get(directive.ruleId);
+
+                if (enableDirective) {
+
+                    // If encounter `eslint-disable` with ruleId, and there is an `eslint-enable` with the same ruleId in enabledRules,
+                    // mark `eslint-enable` with ruleId as used.
+                    // e.g.
+                    //    /* eslint-disable rule-id */ <- current directive
+                    //    /* eslint-enable rule-id */ <- used
+                    usedEnableDirectives.add(enableDirective);
+                } else {
+                    const enabledDirectiveWithoutRuleId = enabledRules.get(null);
+
+                    if (enabledDirectiveWithoutRuleId) {
+
+                        // If encounter `eslint-disable` with ruleId, and there is no `eslint-enable` with the same ruleId in enabledRules,
+                        // mark `eslint-enable` without ruleId as used.
+                        // e.g.
+                        //    /* eslint-disable rule-id */ <- current directive
+                        //    /* eslint-enable */ <- used
+                        usedEnableDirectives.add(enabledDirectiveWithoutRuleId);
+                    }
+                }
+            }
+        } else if (directive.type === "enable") {
+            if (directive.ruleId === null) {
+
+                // If encounter `eslint-enable` without ruleId, the `eslint-enable` that follows it are unused.
+                // So clear enabledRules.
+                // e.g.
+                //    /* eslint-enable */ <- current directive
+                //    /* eslint-enable rule-id *// <- unused
+                //    /* eslint-enable */ <- unused
+                enabledRules.clear();
+                enabledRules.set(null, directive);
+            } else {
+                enabledRules.set(directive.ruleId, directive);
+            }
+        }
+    }
+    return usedEnableDirectives;
+}
+
+/**
+ * This is the same as the exported function, except that it
+ * doesn't handle disable-line and disable-next-line directives, and it always reports unused
+ * disable directives.
+ * @param {Object} options options for applying directives. This is the same as the options
+ * for the exported function, except that `reportUnusedDisableDirectives` is not supported
+ * (this function always reports unused disable directives).
+ * @returns {{problems: LintMessage[], unusedDirectives: LintMessage[]}} An object with a list
+ * of problems (including suppressed ones) and unused eslint-disable directives
+ */
+function applyDirectives(options) {
+    const problems = [];
+    const usedDisableDirectives = new Set();
+
+    for (const problem of options.problems) {
+        let disableDirectivesForProblem = [];
+        let nextDirectiveIndex = 0;
+
+        while (
+            nextDirectiveIndex < options.directives.length &&
+            compareLocations(options.directives[nextDirectiveIndex], problem) <= 0
+        ) {
+            const directive = options.directives[nextDirectiveIndex++];
+
+            if (directive.ruleId === null || directive.ruleId === problem.ruleId) {
+                switch (directive.type) {
+                    case "disable":
+                        disableDirectivesForProblem.push(directive);
+                        break;
+
+                    case "enable":
+                        disableDirectivesForProblem = [];
+                        break;
+
+                    // no default
+                }
+            }
+        }
+
+        if (disableDirectivesForProblem.length > 0) {
+            const suppressions = disableDirectivesForProblem.map(directive => ({
+                kind: "directive",
+                justification: directive.unprocessedDirective.justification
+            }));
+
+            if (problem.suppressions) {
+                problem.suppressions = problem.suppressions.concat(suppressions);
+            } else {
+                problem.suppressions = suppressions;
+                usedDisableDirectives.add(disableDirectivesForProblem[disableDirectivesForProblem.length - 1]);
+            }
+        }
+
+        problems.push(problem);
+    }
+
+    const unusedDisableDirectivesToReport = options.directives
+        .filter(directive => directive.type === "disable" && !usedDisableDirectives.has(directive));
+
+
+    const unusedEnableDirectivesToReport = new Set(
+        options.directives.filter(directive => directive.unprocessedDirective.type === "enable")
+    );
+
+    /*
+     * If directives has the eslint-enable directive,
+     * check whether the eslint-enable comment is used.
+     */
+    if (unusedEnableDirectivesToReport.size > 0) {
+        for (const directive of collectUsedEnableDirectives(options.directives)) {
+            unusedEnableDirectivesToReport.delete(directive);
+        }
+    }
+
+    const processed = processUnusedDirectives(unusedDisableDirectivesToReport)
+        .concat(processUnusedDirectives(unusedEnableDirectivesToReport));
+
+    const unusedDirectives = processed
+        .map(({ description, fix, unprocessedDirective }) => {
+            const { parentComment, type, line, column } = unprocessedDirective;
+
+            let message;
+
+            if (type === "enable") {
+                message = description
+                    ? `Unused eslint-enable directive (no matching eslint-disable directives were found for ${description}).`
+                    : "Unused eslint-enable directive (no matching eslint-disable directives were found).";
+            } else {
+                message = description
+                    ? `Unused eslint-disable directive (no problems were reported from ${description}).`
+                    : "Unused eslint-disable directive (no problems were reported).";
+            }
+            return {
+                ruleId: null,
+                message,
+                line: type === "disable-next-line" ? parentComment.commentToken.loc.start.line : line,
+                column: type === "disable-next-line" ? parentComment.commentToken.loc.start.column + 1 : column,
+                severity: options.reportUnusedDisableDirectives === "warn" ? 1 : 2,
+                nodeType: null,
+                ...options.disableFixes ? {} : { fix }
+            };
+        });
+
+    return { problems, unusedDirectives };
+}
+
+/**
+ * Given a list of directive comments (i.e. metadata about eslint-disable and eslint-enable comments) and a list
+ * of reported problems, adds the suppression information to the problems.
+ * @param {Object} options Information about directives and problems
+ * @param {{
+ *      type: ("disable"|"enable"|"disable-line"|"disable-next-line"),
+ *      ruleId: (string|null),
+ *      line: number,
+ *      column: number,
+ *      justification: string
+ * }} options.directives Directive comments found in the file, with one-based columns.
+ * Two directive comments can only have the same location if they also have the same type (e.g. a single eslint-disable
+ * comment for two different rules is represented as two directives).
+ * @param {{ruleId: (string|null), line: number, column: number}[]} options.problems
+ * A list of problems reported by rules, sorted by increasing location in the file, with one-based columns.
+ * @param {"off" | "warn" | "error"} options.reportUnusedDisableDirectives If `"warn"` or `"error"`, adds additional problems for unused directives
+ * @param {boolean} options.disableFixes If true, it doesn't make `fix` properties.
+ * @returns {{ruleId: (string|null), line: number, column: number, suppressions?: {kind: string, justification: string}}[]}
+ * An object with a list of reported problems, the suppressed of which contain the suppression information.
+ */
+module.exports = ({ directives, disableFixes, problems, reportUnusedDisableDirectives = "off" }) => {
+    const blockDirectives = directives
+        .filter(directive => directive.type === "disable" || directive.type === "enable")
+        .map(directive => Object.assign({}, directive, { unprocessedDirective: directive }))
+        .sort(compareLocations);
+
+    const lineDirectives = directives.flatMap(directive => {
+        switch (directive.type) {
+            case "disable":
+            case "enable":
+                return [];
+
+            case "disable-line":
+                return [
+                    { type: "disable", line: directive.line, column: 1, ruleId: directive.ruleId, unprocessedDirective: directive },
+                    { type: "enable", line: directive.line + 1, column: 0, ruleId: directive.ruleId, unprocessedDirective: directive }
+                ];
+
+            case "disable-next-line":
+                return [
+                    { type: "disable", line: directive.line + 1, column: 1, ruleId: directive.ruleId, unprocessedDirective: directive },
+                    { type: "enable", line: directive.line + 2, column: 0, ruleId: directive.ruleId, unprocessedDirective: directive }
+                ];
+
+            default:
+                throw new TypeError(`Unrecognized directive type '${directive.type}'`);
+        }
+    }).sort(compareLocations);
+
+    const blockDirectivesResult = applyDirectives({
+        problems,
+        directives: blockDirectives,
+        disableFixes,
+        reportUnusedDisableDirectives
+    });
+    const lineDirectivesResult = applyDirectives({
+        problems: blockDirectivesResult.problems,
+        directives: lineDirectives,
+        disableFixes,
+        reportUnusedDisableDirectives
+    });
+
+    return reportUnusedDisableDirectives !== "off"
+        ? lineDirectivesResult.problems
+            .concat(blockDirectivesResult.unusedDirectives)
+            .concat(lineDirectivesResult.unusedDirectives)
+            .sort(compareLocations)
+        : lineDirectivesResult.problems;
+};
Index: frontend/node_modules/eslint/lib/linter/code-path-analysis/code-path-analyzer.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/code-path-analysis/code-path-analyzer.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/code-path-analysis/code-path-analyzer.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,852 @@
+/**
+ * @fileoverview A class of the code path analyzer.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const assert = require("assert"),
+    { breakableTypePattern } = require("../../shared/ast-utils"),
+    CodePath = require("./code-path"),
+    CodePathSegment = require("./code-path-segment"),
+    IdGenerator = require("./id-generator"),
+    debug = require("./debug-helpers");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given node is a `case` node (not `default` node).
+ * @param {ASTNode} node A `SwitchCase` node to check.
+ * @returns {boolean} `true` if the node is a `case` node (not `default` node).
+ */
+function isCaseNode(node) {
+    return Boolean(node.test);
+}
+
+/**
+ * Checks if a given node appears as the value of a PropertyDefinition node.
+ * @param {ASTNode} node THe node to check.
+ * @returns {boolean} `true` if the node is a PropertyDefinition value,
+ *      false if not.
+ */
+function isPropertyDefinitionValue(node) {
+    const parent = node.parent;
+
+    return parent && parent.type === "PropertyDefinition" && parent.value === node;
+}
+
+/**
+ * Checks whether the given logical operator is taken into account for the code
+ * path analysis.
+ * @param {string} operator The operator found in the LogicalExpression node
+ * @returns {boolean} `true` if the operator is "&&" or "||" or "??"
+ */
+function isHandledLogicalOperator(operator) {
+    return operator === "&&" || operator === "||" || operator === "??";
+}
+
+/**
+ * Checks whether the given assignment operator is a logical assignment operator.
+ * Logical assignments are taken into account for the code path analysis
+ * because of their short-circuiting semantics.
+ * @param {string} operator The operator found in the AssignmentExpression node
+ * @returns {boolean} `true` if the operator is "&&=" or "||=" or "??="
+ */
+function isLogicalAssignmentOperator(operator) {
+    return operator === "&&=" || operator === "||=" || operator === "??=";
+}
+
+/**
+ * Gets the label if the parent node of a given node is a LabeledStatement.
+ * @param {ASTNode} node A node to get.
+ * @returns {string|null} The label or `null`.
+ */
+function getLabel(node) {
+    if (node.parent.type === "LabeledStatement") {
+        return node.parent.label.name;
+    }
+    return null;
+}
+
+/**
+ * Checks whether or not a given logical expression node goes different path
+ * between the `true` case and the `false` case.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} `true` if the node is a test of a choice statement.
+ */
+function isForkingByTrueOrFalse(node) {
+    const parent = node.parent;
+
+    switch (parent.type) {
+        case "ConditionalExpression":
+        case "IfStatement":
+        case "WhileStatement":
+        case "DoWhileStatement":
+        case "ForStatement":
+            return parent.test === node;
+
+        case "LogicalExpression":
+            return isHandledLogicalOperator(parent.operator);
+
+        case "AssignmentExpression":
+            return isLogicalAssignmentOperator(parent.operator);
+
+        default:
+            return false;
+    }
+}
+
+/**
+ * Gets the boolean value of a given literal node.
+ *
+ * This is used to detect infinity loops (e.g. `while (true) {}`).
+ * Statements preceded by an infinity loop are unreachable if the loop didn't
+ * have any `break` statement.
+ * @param {ASTNode} node A node to get.
+ * @returns {boolean|undefined} a boolean value if the node is a Literal node,
+ *   otherwise `undefined`.
+ */
+function getBooleanValueIfSimpleConstant(node) {
+    if (node.type === "Literal") {
+        return Boolean(node.value);
+    }
+    return void 0;
+}
+
+/**
+ * Checks that a given identifier node is a reference or not.
+ *
+ * This is used to detect the first throwable node in a `try` block.
+ * @param {ASTNode} node An Identifier node to check.
+ * @returns {boolean} `true` if the node is a reference.
+ */
+function isIdentifierReference(node) {
+    const parent = node.parent;
+
+    switch (parent.type) {
+        case "LabeledStatement":
+        case "BreakStatement":
+        case "ContinueStatement":
+        case "ArrayPattern":
+        case "RestElement":
+        case "ImportSpecifier":
+        case "ImportDefaultSpecifier":
+        case "ImportNamespaceSpecifier":
+        case "CatchClause":
+            return false;
+
+        case "FunctionDeclaration":
+        case "FunctionExpression":
+        case "ArrowFunctionExpression":
+        case "ClassDeclaration":
+        case "ClassExpression":
+        case "VariableDeclarator":
+            return parent.id !== node;
+
+        case "Property":
+        case "PropertyDefinition":
+        case "MethodDefinition":
+            return (
+                parent.key !== node ||
+                parent.computed ||
+                parent.shorthand
+            );
+
+        case "AssignmentPattern":
+            return parent.key !== node;
+
+        default:
+            return true;
+    }
+}
+
+/**
+ * Updates the current segment with the head segment.
+ * This is similar to local branches and tracking branches of git.
+ *
+ * To separate the current and the head is in order to not make useless segments.
+ *
+ * In this process, both "onCodePathSegmentStart" and "onCodePathSegmentEnd"
+ * events are fired.
+ * @param {CodePathAnalyzer} analyzer The instance.
+ * @param {ASTNode} node The current AST node.
+ * @returns {void}
+ */
+function forwardCurrentToHead(analyzer, node) {
+    const codePath = analyzer.codePath;
+    const state = CodePath.getState(codePath);
+    const currentSegments = state.currentSegments;
+    const headSegments = state.headSegments;
+    const end = Math.max(currentSegments.length, headSegments.length);
+    let i, currentSegment, headSegment;
+
+    // Fires leaving events.
+    for (i = 0; i < end; ++i) {
+        currentSegment = currentSegments[i];
+        headSegment = headSegments[i];
+
+        if (currentSegment !== headSegment && currentSegment) {
+
+            const eventName = currentSegment.reachable
+                ? "onCodePathSegmentEnd"
+                : "onUnreachableCodePathSegmentEnd";
+
+            debug.dump(`${eventName} ${currentSegment.id}`);
+
+            analyzer.emitter.emit(
+                eventName,
+                currentSegment,
+                node
+            );
+        }
+    }
+
+    // Update state.
+    state.currentSegments = headSegments;
+
+    // Fires entering events.
+    for (i = 0; i < end; ++i) {
+        currentSegment = currentSegments[i];
+        headSegment = headSegments[i];
+
+        if (currentSegment !== headSegment && headSegment) {
+
+            const eventName = headSegment.reachable
+                ? "onCodePathSegmentStart"
+                : "onUnreachableCodePathSegmentStart";
+
+            debug.dump(`${eventName} ${headSegment.id}`);
+
+            CodePathSegment.markUsed(headSegment);
+            analyzer.emitter.emit(
+                eventName,
+                headSegment,
+                node
+            );
+        }
+    }
+
+}
+
+/**
+ * Updates the current segment with empty.
+ * This is called at the last of functions or the program.
+ * @param {CodePathAnalyzer} analyzer The instance.
+ * @param {ASTNode} node The current AST node.
+ * @returns {void}
+ */
+function leaveFromCurrentSegment(analyzer, node) {
+    const state = CodePath.getState(analyzer.codePath);
+    const currentSegments = state.currentSegments;
+
+    for (let i = 0; i < currentSegments.length; ++i) {
+        const currentSegment = currentSegments[i];
+        const eventName = currentSegment.reachable
+            ? "onCodePathSegmentEnd"
+            : "onUnreachableCodePathSegmentEnd";
+
+        debug.dump(`${eventName} ${currentSegment.id}`);
+
+        analyzer.emitter.emit(
+            eventName,
+            currentSegment,
+            node
+        );
+    }
+
+    state.currentSegments = [];
+}
+
+/**
+ * Updates the code path due to the position of a given node in the parent node
+ * thereof.
+ *
+ * For example, if the node is `parent.consequent`, this creates a fork from the
+ * current path.
+ * @param {CodePathAnalyzer} analyzer The instance.
+ * @param {ASTNode} node The current AST node.
+ * @returns {void}
+ */
+function preprocess(analyzer, node) {
+    const codePath = analyzer.codePath;
+    const state = CodePath.getState(codePath);
+    const parent = node.parent;
+
+    switch (parent.type) {
+
+        // The `arguments.length == 0` case is in `postprocess` function.
+        case "CallExpression":
+            if (parent.optional === true && parent.arguments.length >= 1 && parent.arguments[0] === node) {
+                state.makeOptionalRight();
+            }
+            break;
+        case "MemberExpression":
+            if (parent.optional === true && parent.property === node) {
+                state.makeOptionalRight();
+            }
+            break;
+
+        case "LogicalExpression":
+            if (
+                parent.right === node &&
+                isHandledLogicalOperator(parent.operator)
+            ) {
+                state.makeLogicalRight();
+            }
+            break;
+
+        case "AssignmentExpression":
+            if (
+                parent.right === node &&
+                isLogicalAssignmentOperator(parent.operator)
+            ) {
+                state.makeLogicalRight();
+            }
+            break;
+
+        case "ConditionalExpression":
+        case "IfStatement":
+
+            /*
+             * Fork if this node is at `consequent`/`alternate`.
+             * `popForkContext()` exists at `IfStatement:exit` and
+             * `ConditionalExpression:exit`.
+             */
+            if (parent.consequent === node) {
+                state.makeIfConsequent();
+            } else if (parent.alternate === node) {
+                state.makeIfAlternate();
+            }
+            break;
+
+        case "SwitchCase":
+            if (parent.consequent[0] === node) {
+                state.makeSwitchCaseBody(false, !parent.test);
+            }
+            break;
+
+        case "TryStatement":
+            if (parent.handler === node) {
+                state.makeCatchBlock();
+            } else if (parent.finalizer === node) {
+                state.makeFinallyBlock();
+            }
+            break;
+
+        case "WhileStatement":
+            if (parent.test === node) {
+                state.makeWhileTest(getBooleanValueIfSimpleConstant(node));
+            } else {
+                assert(parent.body === node);
+                state.makeWhileBody();
+            }
+            break;
+
+        case "DoWhileStatement":
+            if (parent.body === node) {
+                state.makeDoWhileBody();
+            } else {
+                assert(parent.test === node);
+                state.makeDoWhileTest(getBooleanValueIfSimpleConstant(node));
+            }
+            break;
+
+        case "ForStatement":
+            if (parent.test === node) {
+                state.makeForTest(getBooleanValueIfSimpleConstant(node));
+            } else if (parent.update === node) {
+                state.makeForUpdate();
+            } else if (parent.body === node) {
+                state.makeForBody();
+            }
+            break;
+
+        case "ForInStatement":
+        case "ForOfStatement":
+            if (parent.left === node) {
+                state.makeForInOfLeft();
+            } else if (parent.right === node) {
+                state.makeForInOfRight();
+            } else {
+                assert(parent.body === node);
+                state.makeForInOfBody();
+            }
+            break;
+
+        case "AssignmentPattern":
+
+            /*
+             * Fork if this node is at `right`.
+             * `left` is executed always, so it uses the current path.
+             * `popForkContext()` exists at `AssignmentPattern:exit`.
+             */
+            if (parent.right === node) {
+                state.pushForkContext();
+                state.forkBypassPath();
+                state.forkPath();
+            }
+            break;
+
+        default:
+            break;
+    }
+}
+
+/**
+ * Updates the code path due to the type of a given node in entering.
+ * @param {CodePathAnalyzer} analyzer The instance.
+ * @param {ASTNode} node The current AST node.
+ * @returns {void}
+ */
+function processCodePathToEnter(analyzer, node) {
+    let codePath = analyzer.codePath;
+    let state = codePath && CodePath.getState(codePath);
+    const parent = node.parent;
+
+    /**
+     * Creates a new code path and trigger the onCodePathStart event
+     * based on the currently selected node.
+     * @param {string} origin The reason the code path was started.
+     * @returns {void}
+     */
+    function startCodePath(origin) {
+        if (codePath) {
+
+            // Emits onCodePathSegmentStart events if updated.
+            forwardCurrentToHead(analyzer, node);
+            debug.dumpState(node, state, false);
+        }
+
+        // Create the code path of this scope.
+        codePath = analyzer.codePath = new CodePath({
+            id: analyzer.idGenerator.next(),
+            origin,
+            upper: codePath,
+            onLooped: analyzer.onLooped
+        });
+        state = CodePath.getState(codePath);
+
+        // Emits onCodePathStart events.
+        debug.dump(`onCodePathStart ${codePath.id}`);
+        analyzer.emitter.emit("onCodePathStart", codePath, node);
+    }
+
+    /*
+     * Special case: The right side of class field initializer is considered
+     * to be its own function, so we need to start a new code path in this
+     * case.
+     */
+    if (isPropertyDefinitionValue(node)) {
+        startCodePath("class-field-initializer");
+
+        /*
+         * Intentional fall through because `node` needs to also be
+         * processed by the code below. For example, if we have:
+         *
+         * class Foo {
+         *     a = () => {}
+         * }
+         *
+         * In this case, we also need start a second code path.
+         */
+
+    }
+
+    switch (node.type) {
+        case "Program":
+            startCodePath("program");
+            break;
+
+        case "FunctionDeclaration":
+        case "FunctionExpression":
+        case "ArrowFunctionExpression":
+            startCodePath("function");
+            break;
+
+        case "StaticBlock":
+            startCodePath("class-static-block");
+            break;
+
+        case "ChainExpression":
+            state.pushChainContext();
+            break;
+        case "CallExpression":
+            if (node.optional === true) {
+                state.makeOptionalNode();
+            }
+            break;
+        case "MemberExpression":
+            if (node.optional === true) {
+                state.makeOptionalNode();
+            }
+            break;
+
+        case "LogicalExpression":
+            if (isHandledLogicalOperator(node.operator)) {
+                state.pushChoiceContext(
+                    node.operator,
+                    isForkingByTrueOrFalse(node)
+                );
+            }
+            break;
+
+        case "AssignmentExpression":
+            if (isLogicalAssignmentOperator(node.operator)) {
+                state.pushChoiceContext(
+                    node.operator.slice(0, -1), // removes `=` from the end
+                    isForkingByTrueOrFalse(node)
+                );
+            }
+            break;
+
+        case "ConditionalExpression":
+        case "IfStatement":
+            state.pushChoiceContext("test", false);
+            break;
+
+        case "SwitchStatement":
+            state.pushSwitchContext(
+                node.cases.some(isCaseNode),
+                getLabel(node)
+            );
+            break;
+
+        case "TryStatement":
+            state.pushTryContext(Boolean(node.finalizer));
+            break;
+
+        case "SwitchCase":
+
+            /*
+             * Fork if this node is after the 2st node in `cases`.
+             * It's similar to `else` blocks.
+             * The next `test` node is processed in this path.
+             */
+            if (parent.discriminant !== node && parent.cases[0] !== node) {
+                state.forkPath();
+            }
+            break;
+
+        case "WhileStatement":
+        case "DoWhileStatement":
+        case "ForStatement":
+        case "ForInStatement":
+        case "ForOfStatement":
+            state.pushLoopContext(node.type, getLabel(node));
+            break;
+
+        case "LabeledStatement":
+            if (!breakableTypePattern.test(node.body.type)) {
+                state.pushBreakContext(false, node.label.name);
+            }
+            break;
+
+        default:
+            break;
+    }
+
+    // Emits onCodePathSegmentStart events if updated.
+    forwardCurrentToHead(analyzer, node);
+    debug.dumpState(node, state, false);
+}
+
+/**
+ * Updates the code path due to the type of a given node in leaving.
+ * @param {CodePathAnalyzer} analyzer The instance.
+ * @param {ASTNode} node The current AST node.
+ * @returns {void}
+ */
+function processCodePathToExit(analyzer, node) {
+
+    const codePath = analyzer.codePath;
+    const state = CodePath.getState(codePath);
+    let dontForward = false;
+
+    switch (node.type) {
+        case "ChainExpression":
+            state.popChainContext();
+            break;
+
+        case "IfStatement":
+        case "ConditionalExpression":
+            state.popChoiceContext();
+            break;
+
+        case "LogicalExpression":
+            if (isHandledLogicalOperator(node.operator)) {
+                state.popChoiceContext();
+            }
+            break;
+
+        case "AssignmentExpression":
+            if (isLogicalAssignmentOperator(node.operator)) {
+                state.popChoiceContext();
+            }
+            break;
+
+        case "SwitchStatement":
+            state.popSwitchContext();
+            break;
+
+        case "SwitchCase":
+
+            /*
+             * This is the same as the process at the 1st `consequent` node in
+             * `preprocess` function.
+             * Must do if this `consequent` is empty.
+             */
+            if (node.consequent.length === 0) {
+                state.makeSwitchCaseBody(true, !node.test);
+            }
+            if (state.forkContext.reachable) {
+                dontForward = true;
+            }
+            break;
+
+        case "TryStatement":
+            state.popTryContext();
+            break;
+
+        case "BreakStatement":
+            forwardCurrentToHead(analyzer, node);
+            state.makeBreak(node.label && node.label.name);
+            dontForward = true;
+            break;
+
+        case "ContinueStatement":
+            forwardCurrentToHead(analyzer, node);
+            state.makeContinue(node.label && node.label.name);
+            dontForward = true;
+            break;
+
+        case "ReturnStatement":
+            forwardCurrentToHead(analyzer, node);
+            state.makeReturn();
+            dontForward = true;
+            break;
+
+        case "ThrowStatement":
+            forwardCurrentToHead(analyzer, node);
+            state.makeThrow();
+            dontForward = true;
+            break;
+
+        case "Identifier":
+            if (isIdentifierReference(node)) {
+                state.makeFirstThrowablePathInTryBlock();
+                dontForward = true;
+            }
+            break;
+
+        case "CallExpression":
+        case "ImportExpression":
+        case "MemberExpression":
+        case "NewExpression":
+        case "YieldExpression":
+            state.makeFirstThrowablePathInTryBlock();
+            break;
+
+        case "WhileStatement":
+        case "DoWhileStatement":
+        case "ForStatement":
+        case "ForInStatement":
+        case "ForOfStatement":
+            state.popLoopContext();
+            break;
+
+        case "AssignmentPattern":
+            state.popForkContext();
+            break;
+
+        case "LabeledStatement":
+            if (!breakableTypePattern.test(node.body.type)) {
+                state.popBreakContext();
+            }
+            break;
+
+        default:
+            break;
+    }
+
+    // Emits onCodePathSegmentStart events if updated.
+    if (!dontForward) {
+        forwardCurrentToHead(analyzer, node);
+    }
+    debug.dumpState(node, state, true);
+}
+
+/**
+ * Updates the code path to finalize the current code path.
+ * @param {CodePathAnalyzer} analyzer The instance.
+ * @param {ASTNode} node The current AST node.
+ * @returns {void}
+ */
+function postprocess(analyzer, node) {
+
+    /**
+     * Ends the code path for the current node.
+     * @returns {void}
+     */
+    function endCodePath() {
+        let codePath = analyzer.codePath;
+
+        // Mark the current path as the final node.
+        CodePath.getState(codePath).makeFinal();
+
+        // Emits onCodePathSegmentEnd event of the current segments.
+        leaveFromCurrentSegment(analyzer, node);
+
+        // Emits onCodePathEnd event of this code path.
+        debug.dump(`onCodePathEnd ${codePath.id}`);
+        analyzer.emitter.emit("onCodePathEnd", codePath, node);
+        debug.dumpDot(codePath);
+
+        codePath = analyzer.codePath = analyzer.codePath.upper;
+        if (codePath) {
+            debug.dumpState(node, CodePath.getState(codePath), true);
+        }
+
+    }
+
+    switch (node.type) {
+        case "Program":
+        case "FunctionDeclaration":
+        case "FunctionExpression":
+        case "ArrowFunctionExpression":
+        case "StaticBlock": {
+            endCodePath();
+            break;
+        }
+
+        // The `arguments.length >= 1` case is in `preprocess` function.
+        case "CallExpression":
+            if (node.optional === true && node.arguments.length === 0) {
+                CodePath.getState(analyzer.codePath).makeOptionalRight();
+            }
+            break;
+
+        default:
+            break;
+    }
+
+    /*
+     * Special case: The right side of class field initializer is considered
+     * to be its own function, so we need to end a code path in this
+     * case.
+     *
+     * We need to check after the other checks in order to close the
+     * code paths in the correct order for code like this:
+     *
+     *
+     * class Foo {
+     *     a = () => {}
+     * }
+     *
+     * In this case, The ArrowFunctionExpression code path is closed first
+     * and then we need to close the code path for the PropertyDefinition
+     * value.
+     */
+    if (isPropertyDefinitionValue(node)) {
+        endCodePath();
+    }
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * The class to analyze code paths.
+ * This class implements the EventGenerator interface.
+ */
+class CodePathAnalyzer {
+
+    /**
+     * @param {EventGenerator} eventGenerator An event generator to wrap.
+     */
+    constructor(eventGenerator) {
+        this.original = eventGenerator;
+        this.emitter = eventGenerator.emitter;
+        this.codePath = null;
+        this.idGenerator = new IdGenerator("s");
+        this.currentNode = null;
+        this.onLooped = this.onLooped.bind(this);
+    }
+
+    /**
+     * Does the process to enter a given AST node.
+     * This updates state of analysis and calls `enterNode` of the wrapped.
+     * @param {ASTNode} node A node which is entering.
+     * @returns {void}
+     */
+    enterNode(node) {
+        this.currentNode = node;
+
+        // Updates the code path due to node's position in its parent node.
+        if (node.parent) {
+            preprocess(this, node);
+        }
+
+        /*
+         * Updates the code path.
+         * And emits onCodePathStart/onCodePathSegmentStart events.
+         */
+        processCodePathToEnter(this, node);
+
+        // Emits node events.
+        this.original.enterNode(node);
+
+        this.currentNode = null;
+    }
+
+    /**
+     * Does the process to leave a given AST node.
+     * This updates state of analysis and calls `leaveNode` of the wrapped.
+     * @param {ASTNode} node A node which is leaving.
+     * @returns {void}
+     */
+    leaveNode(node) {
+        this.currentNode = node;
+
+        /*
+         * Updates the code path.
+         * And emits onCodePathStart/onCodePathSegmentStart events.
+         */
+        processCodePathToExit(this, node);
+
+        // Emits node events.
+        this.original.leaveNode(node);
+
+        // Emits the last onCodePathStart/onCodePathSegmentStart events.
+        postprocess(this, node);
+
+        this.currentNode = null;
+    }
+
+    /**
+     * This is called on a code path looped.
+     * Then this raises a looped event.
+     * @param {CodePathSegment} fromSegment A segment of prev.
+     * @param {CodePathSegment} toSegment A segment of next.
+     * @returns {void}
+     */
+    onLooped(fromSegment, toSegment) {
+        if (fromSegment.reachable && toSegment.reachable) {
+            debug.dump(`onCodePathSegmentLoop ${fromSegment.id} -> ${toSegment.id}`);
+            this.emitter.emit(
+                "onCodePathSegmentLoop",
+                fromSegment,
+                toSegment,
+                this.currentNode
+            );
+        }
+    }
+}
+
+module.exports = CodePathAnalyzer;
Index: frontend/node_modules/eslint/lib/linter/code-path-analysis/code-path-segment.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/code-path-analysis/code-path-segment.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/code-path-analysis/code-path-segment.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,263 @@
+/**
+ * @fileoverview The CodePathSegment class.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const debug = require("./debug-helpers");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given segment is reachable.
+ * @param {CodePathSegment} segment A segment to check.
+ * @returns {boolean} `true` if the segment is reachable.
+ */
+function isReachable(segment) {
+    return segment.reachable;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * A code path segment.
+ *
+ * Each segment is arranged in a series of linked lists (implemented by arrays)
+ * that keep track of the previous and next segments in a code path. In this way,
+ * you can navigate between all segments in any code path so long as you have a
+ * reference to any segment in that code path.
+ *
+ * When first created, the segment is in a detached state, meaning that it knows the
+ * segments that came before it but those segments don't know that this new segment
+ * follows it. Only when `CodePathSegment#markUsed()` is called on a segment does it
+ * officially become part of the code path by updating the previous segments to know
+ * that this new segment follows.
+ */
+class CodePathSegment {
+
+    /**
+     * Creates a new instance.
+     * @param {string} id An identifier.
+     * @param {CodePathSegment[]} allPrevSegments An array of the previous segments.
+     *   This array includes unreachable segments.
+     * @param {boolean} reachable A flag which shows this is reachable.
+     */
+    constructor(id, allPrevSegments, reachable) {
+
+        /**
+         * The identifier of this code path.
+         * Rules use it to store additional information of each rule.
+         * @type {string}
+         */
+        this.id = id;
+
+        /**
+         * An array of the next reachable segments.
+         * @type {CodePathSegment[]}
+         */
+        this.nextSegments = [];
+
+        /**
+         * An array of the previous reachable segments.
+         * @type {CodePathSegment[]}
+         */
+        this.prevSegments = allPrevSegments.filter(isReachable);
+
+        /**
+         * An array of all next segments including reachable and unreachable.
+         * @type {CodePathSegment[]}
+         */
+        this.allNextSegments = [];
+
+        /**
+         * An array of all previous segments including reachable and unreachable.
+         * @type {CodePathSegment[]}
+         */
+        this.allPrevSegments = allPrevSegments;
+
+        /**
+         * A flag which shows this is reachable.
+         * @type {boolean}
+         */
+        this.reachable = reachable;
+
+        // Internal data.
+        Object.defineProperty(this, "internal", {
+            value: {
+
+                // determines if the segment has been attached to the code path
+                used: false,
+
+                // array of previous segments coming from the end of a loop
+                loopedPrevSegments: []
+            }
+        });
+
+        /* c8 ignore start */
+        if (debug.enabled) {
+            this.internal.nodes = [];
+        }/* c8 ignore stop */
+    }
+
+    /**
+     * Checks a given previous segment is coming from the end of a loop.
+     * @param {CodePathSegment} segment A previous segment to check.
+     * @returns {boolean} `true` if the segment is coming from the end of a loop.
+     */
+    isLoopedPrevSegment(segment) {
+        return this.internal.loopedPrevSegments.includes(segment);
+    }
+
+    /**
+     * Creates the root segment.
+     * @param {string} id An identifier.
+     * @returns {CodePathSegment} The created segment.
+     */
+    static newRoot(id) {
+        return new CodePathSegment(id, [], true);
+    }
+
+    /**
+     * Creates a new segment and appends it after the given segments.
+     * @param {string} id An identifier.
+     * @param {CodePathSegment[]} allPrevSegments An array of the previous segments
+     *      to append to.
+     * @returns {CodePathSegment} The created segment.
+     */
+    static newNext(id, allPrevSegments) {
+        return new CodePathSegment(
+            id,
+            CodePathSegment.flattenUnusedSegments(allPrevSegments),
+            allPrevSegments.some(isReachable)
+        );
+    }
+
+    /**
+     * Creates an unreachable segment and appends it after the given segments.
+     * @param {string} id An identifier.
+     * @param {CodePathSegment[]} allPrevSegments An array of the previous segments.
+     * @returns {CodePathSegment} The created segment.
+     */
+    static newUnreachable(id, allPrevSegments) {
+        const segment = new CodePathSegment(id, CodePathSegment.flattenUnusedSegments(allPrevSegments), false);
+
+        /*
+         * In `if (a) return a; foo();` case, the unreachable segment preceded by
+         * the return statement is not used but must not be removed.
+         */
+        CodePathSegment.markUsed(segment);
+
+        return segment;
+    }
+
+    /**
+     * Creates a segment that follows given segments.
+     * This factory method does not connect with `allPrevSegments`.
+     * But this inherits `reachable` flag.
+     * @param {string} id An identifier.
+     * @param {CodePathSegment[]} allPrevSegments An array of the previous segments.
+     * @returns {CodePathSegment} The created segment.
+     */
+    static newDisconnected(id, allPrevSegments) {
+        return new CodePathSegment(id, [], allPrevSegments.some(isReachable));
+    }
+
+    /**
+     * Marks a given segment as used.
+     *
+     * And this function registers the segment into the previous segments as a next.
+     * @param {CodePathSegment} segment A segment to mark.
+     * @returns {void}
+     */
+    static markUsed(segment) {
+        if (segment.internal.used) {
+            return;
+        }
+        segment.internal.used = true;
+
+        let i;
+
+        if (segment.reachable) {
+
+            /*
+             * If the segment is reachable, then it's officially part of the
+             * code path. This loops through all previous segments to update
+             * their list of next segments. Because the segment is reachable,
+             * it's added to both `nextSegments` and `allNextSegments`.
+             */
+            for (i = 0; i < segment.allPrevSegments.length; ++i) {
+                const prevSegment = segment.allPrevSegments[i];
+
+                prevSegment.allNextSegments.push(segment);
+                prevSegment.nextSegments.push(segment);
+            }
+        } else {
+
+            /*
+             * If the segment is not reachable, then it's not officially part of the
+             * code path. This loops through all previous segments to update
+             * their list of next segments. Because the segment is not reachable,
+             * it's added only to `allNextSegments`.
+             */
+            for (i = 0; i < segment.allPrevSegments.length; ++i) {
+                segment.allPrevSegments[i].allNextSegments.push(segment);
+            }
+        }
+    }
+
+    /**
+     * Marks a previous segment as looped.
+     * @param {CodePathSegment} segment A segment.
+     * @param {CodePathSegment} prevSegment A previous segment to mark.
+     * @returns {void}
+     */
+    static markPrevSegmentAsLooped(segment, prevSegment) {
+        segment.internal.loopedPrevSegments.push(prevSegment);
+    }
+
+    /**
+     * Creates a new array based on an array of segments. If any segment in the
+     * array is unused, then it is replaced by all of its previous segments.
+     * All used segments are returned as-is without replacement.
+     * @param {CodePathSegment[]} segments The array of segments to flatten.
+     * @returns {CodePathSegment[]} The flattened array.
+     */
+    static flattenUnusedSegments(segments) {
+        const done = new Set();
+
+        for (let i = 0; i < segments.length; ++i) {
+            const segment = segments[i];
+
+            // Ignores duplicated.
+            if (done.has(segment)) {
+                continue;
+            }
+
+            // Use previous segments if unused.
+            if (!segment.internal.used) {
+                for (let j = 0; j < segment.allPrevSegments.length; ++j) {
+                    const prevSegment = segment.allPrevSegments[j];
+
+                    if (!done.has(prevSegment)) {
+                        done.add(prevSegment);
+                    }
+                }
+            } else {
+                done.add(segment);
+            }
+        }
+
+        return [...done];
+    }
+}
+
+module.exports = CodePathSegment;
Index: frontend/node_modules/eslint/lib/linter/code-path-analysis/code-path-state.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/code-path-analysis/code-path-state.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/code-path-analysis/code-path-state.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,2348 @@
+/**
+ * @fileoverview A class to manage state of generating a code path.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const CodePathSegment = require("./code-path-segment"),
+    ForkContext = require("./fork-context");
+
+//-----------------------------------------------------------------------------
+// Contexts
+//-----------------------------------------------------------------------------
+
+/**
+ * Represents the context in which a `break` statement can be used.
+ *
+ * A `break` statement without a label is only valid in a few places in
+ * JavaScript: any type of loop or a `switch` statement. Otherwise, `break`
+ * without a label causes a syntax error. For these contexts, `breakable` is
+ * set to `true` to indicate that a `break` without a label is valid.
+ *
+ * However, a `break` statement with a label is also valid inside of a labeled
+ * statement. For example, this is valid:
+ *
+ *     a : {
+ *         break a;
+ *     }
+ *
+ * The `breakable` property is set false for labeled statements to indicate
+ * that `break` without a label is invalid.
+ */
+class BreakContext {
+
+    /**
+     * Creates a new instance.
+     * @param {BreakContext} upperContext The previous `BreakContext`.
+     * @param {boolean} breakable Indicates if we are inside a statement where
+     *      `break` without a label will exit the statement.
+     * @param {string|null} label The label for the statement.
+     * @param {ForkContext} forkContext The current fork context.
+     */
+    constructor(upperContext, breakable, label, forkContext) {
+
+        /**
+         * The previous `BreakContext`
+         * @type {BreakContext}
+         */
+        this.upper = upperContext;
+
+        /**
+         * Indicates if we are inside a statement where `break` without a label
+         * will exit the statement.
+         * @type {boolean}
+         */
+        this.breakable = breakable;
+
+        /**
+         * The label associated with the statement.
+         * @type {string|null}
+         */
+        this.label = label;
+
+        /**
+         * The fork context for the `break`.
+         * @type {ForkContext}
+         */
+        this.brokenForkContext = ForkContext.newEmpty(forkContext);
+    }
+}
+
+/**
+ * Represents the context for `ChainExpression` nodes.
+ */
+class ChainContext {
+
+    /**
+     * Creates a new instance.
+     * @param {ChainContext} upperContext The previous `ChainContext`.
+     */
+    constructor(upperContext) {
+
+        /**
+         * The previous `ChainContext`
+         * @type {ChainContext}
+         */
+        this.upper = upperContext;
+
+        /**
+         * The number of choice contexts inside of the `ChainContext`.
+         * @type {number}
+         */
+        this.choiceContextCount = 0;
+
+    }
+}
+
+/**
+ * Represents a choice in the code path.
+ *
+ * Choices are created by logical operators such as `&&`, loops, conditionals,
+ * and `if` statements. This is the point at which the code path has a choice of
+ * which direction to go.
+ *
+ * The result of a choice might be in the left (test) expression of another choice,
+ * and in that case, may create a new fork. For example, `a || b` is a choice
+ * but does not create a new fork because the result of the expression is
+ * not used as the test expression in another expression. In this case,
+ * `isForkingAsResult` is false. In the expression `a || b || c`, the `a || b`
+ * expression appears as the test expression for `|| c`, so the
+ * result of `a || b` creates a fork because execution may or may not
+ * continue to `|| c`. `isForkingAsResult` for `a || b` in this case is true
+ * while `isForkingAsResult` for `|| c` is false. (`isForkingAsResult` is always
+ * false for `if` statements, conditional expressions, and loops.)
+ *
+ * All of the choices except one (`??`) operate on a true/false fork, meaning if
+ * true go one way and if false go the other (tracked by `trueForkContext` and
+ * `falseForkContext`). The `??` operator doesn't operate on true/false because
+ * the left expression is evaluated to be nullish or not, so only if nullish do
+ * we fork to the right expression (tracked by `nullishForkContext`).
+ */
+class ChoiceContext {
+
+    /**
+     * Creates a new instance.
+     * @param {ChoiceContext} upperContext The previous `ChoiceContext`.
+     * @param {string} kind The kind of choice. If it's a logical or assignment expression, this
+     *      is `"&&"` or `"||"` or `"??"`; if it's an `if` statement or
+     *      conditional expression, this is `"test"`; otherwise, this is `"loop"`.
+     * @param {boolean} isForkingAsResult Indicates if the result of the choice
+     *      creates a fork.
+     * @param {ForkContext} forkContext The containing `ForkContext`.
+     */
+    constructor(upperContext, kind, isForkingAsResult, forkContext) {
+
+        /**
+         * The previous `ChoiceContext`
+         * @type {ChoiceContext}
+         */
+        this.upper = upperContext;
+
+        /**
+         * The kind of choice. If it's a logical or assignment expression, this
+         * is `"&&"` or `"||"` or `"??"`; if it's an `if` statement or
+         * conditional expression, this is `"test"`; otherwise, this is `"loop"`.
+         * @type {string}
+         */
+        this.kind = kind;
+
+        /**
+         * Indicates if the result of the choice forks the code path.
+         * @type {boolean}
+         */
+        this.isForkingAsResult = isForkingAsResult;
+
+        /**
+         * The fork context for the `true` path of the choice.
+         * @type {ForkContext}
+         */
+        this.trueForkContext = ForkContext.newEmpty(forkContext);
+
+        /**
+         * The fork context for the `false` path of the choice.
+         * @type {ForkContext}
+         */
+        this.falseForkContext = ForkContext.newEmpty(forkContext);
+
+        /**
+         * The fork context for when the choice result is `null` or `undefined`.
+         * @type {ForkContext}
+         */
+        this.nullishForkContext = ForkContext.newEmpty(forkContext);
+
+        /**
+         * Indicates if any of `trueForkContext`, `falseForkContext`, or
+         * `nullishForkContext` have been updated with segments from a child context.
+         * @type {boolean}
+         */
+        this.processed = false;
+    }
+
+}
+
+/**
+ * Base class for all loop contexts.
+ */
+class LoopContextBase {
+
+    /**
+     * Creates a new instance.
+     * @param {LoopContext|null} upperContext The previous `LoopContext`.
+     * @param {string} type The AST node's `type` for the loop.
+     * @param {string|null} label The label for the loop from an enclosing `LabeledStatement`.
+     * @param {BreakContext} breakContext The context for breaking the loop.
+     */
+    constructor(upperContext, type, label, breakContext) {
+
+        /**
+         * The previous `LoopContext`.
+         * @type {LoopContext}
+         */
+        this.upper = upperContext;
+
+        /**
+         * The AST node's `type` for the loop.
+         * @type {string}
+         */
+        this.type = type;
+
+        /**
+         * The label for the loop from an enclosing `LabeledStatement`.
+         * @type {string|null}
+         */
+        this.label = label;
+
+        /**
+         * The fork context for when `break` is encountered.
+         * @type {ForkContext}
+         */
+        this.brokenForkContext = breakContext.brokenForkContext;
+    }
+}
+
+/**
+ * Represents the context for a `while` loop.
+ */
+class WhileLoopContext extends LoopContextBase {
+
+    /**
+     * Creates a new instance.
+     * @param {LoopContext|null} upperContext The previous `LoopContext`.
+     * @param {string|null} label The label for the loop from an enclosing `LabeledStatement`.
+     * @param {BreakContext} breakContext The context for breaking the loop.
+     */
+    constructor(upperContext, label, breakContext) {
+        super(upperContext, "WhileStatement", label, breakContext);
+
+        /**
+         * The hardcoded literal boolean test condition for
+         * the loop. Used to catch infinite or skipped loops.
+         * @type {boolean|undefined}
+         */
+        this.test = void 0;
+
+        /**
+         * The segments representing the test condition where `continue` will
+         * jump to. The test condition will typically have just one segment but
+         * it's possible for there to be more than one.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.continueDestSegments = null;
+    }
+}
+
+/**
+ * Represents the context for a `do-while` loop.
+ */
+class DoWhileLoopContext extends LoopContextBase {
+
+    /**
+     * Creates a new instance.
+     * @param {LoopContext|null} upperContext The previous `LoopContext`.
+     * @param {string|null} label The label for the loop from an enclosing `LabeledStatement`.
+     * @param {BreakContext} breakContext The context for breaking the loop.
+     * @param {ForkContext} forkContext The enclosing fork context.
+     */
+    constructor(upperContext, label, breakContext, forkContext) {
+        super(upperContext, "DoWhileStatement", label, breakContext);
+
+        /**
+         * The hardcoded literal boolean test condition for
+         * the loop. Used to catch infinite or skipped loops.
+         * @type {boolean|undefined}
+         */
+        this.test = void 0;
+
+        /**
+         * The segments at the start of the loop body. This is the only loop
+         * where the test comes at the end, so the first iteration always
+         * happens and we need a reference to the first statements.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.entrySegments = null;
+
+        /**
+         * The fork context to follow when a `continue` is found.
+         * @type {ForkContext}
+         */
+        this.continueForkContext = ForkContext.newEmpty(forkContext);
+    }
+}
+
+/**
+ * Represents the context for a `for` loop.
+ */
+class ForLoopContext extends LoopContextBase {
+
+    /**
+     * Creates a new instance.
+     * @param {LoopContext|null} upperContext The previous `LoopContext`.
+     * @param {string|null} label The label for the loop from an enclosing `LabeledStatement`.
+     * @param {BreakContext} breakContext The context for breaking the loop.
+     */
+    constructor(upperContext, label, breakContext) {
+        super(upperContext, "ForStatement", label, breakContext);
+
+        /**
+         * The hardcoded literal boolean test condition for
+         * the loop. Used to catch infinite or skipped loops.
+         * @type {boolean|undefined}
+         */
+        this.test = void 0;
+
+        /**
+         * The end of the init expression. This may change during the lifetime
+         * of the instance as we traverse the loop because some loops don't have
+         * an init expression.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.endOfInitSegments = null;
+
+        /**
+         * The start of the test expression. This may change during the lifetime
+         * of the instance as we traverse the loop because some loops don't have
+         * a test expression.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.testSegments = null;
+
+        /**
+         * The end of the test expression. This may change during the lifetime
+         * of the instance as we traverse the loop because some loops don't have
+         * a test expression.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.endOfTestSegments = null;
+
+        /**
+         * The start of the update expression. This may change during the lifetime
+         * of the instance as we traverse the loop because some loops don't have
+         * an update expression.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.updateSegments = null;
+
+        /**
+         * The end of the update expresion. This may change during the lifetime
+         * of the instance as we traverse the loop because some loops don't have
+         * an update expression.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.endOfUpdateSegments = null;
+
+        /**
+         * The segments representing the test condition where `continue` will
+         * jump to. The test condition will typically have just one segment but
+         * it's possible for there to be more than one. This may change during the
+         * lifetime of the instance as we traverse the loop because some loops
+         * don't have an update expression. When there is an update expression, this
+         * will end up pointing to that expression; otherwise it will end up pointing
+         * to the test expression.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.continueDestSegments = null;
+    }
+}
+
+/**
+ * Represents the context for a `for-in` loop.
+ *
+ * Terminology:
+ * - "left" means the part of the loop to the left of the `in` keyword. For
+ *   example, in `for (var x in y)`, the left is `var x`.
+ * - "right" means the part of the loop to the right of the `in` keyword. For
+ *   example, in `for (var x in y)`, the right is `y`.
+ */
+class ForInLoopContext extends LoopContextBase {
+
+    /**
+     * Creates a new instance.
+     * @param {LoopContext|null} upperContext The previous `LoopContext`.
+     * @param {string|null} label The label for the loop from an enclosing `LabeledStatement`.
+     * @param {BreakContext} breakContext The context for breaking the loop.
+     */
+    constructor(upperContext, label, breakContext) {
+        super(upperContext, "ForInStatement", label, breakContext);
+
+        /**
+         * The segments that came immediately before the start of the loop.
+         * This allows you to traverse backwards out of the loop into the
+         * surrounding code. This is necessary to evaluate the right expression
+         * correctly, as it must be evaluated in the same way as the left
+         * expression, but the pointer to these segments would otherwise be
+         * lost if not stored on the instance. Once the right expression has
+         * been evaluated, this property is no longer used.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.prevSegments = null;
+
+        /**
+         * Segments representing the start of everything to the left of the
+         * `in` keyword. This can be used to move forward towards
+         * `endOfLeftSegments`. `leftSegments` and `endOfLeftSegments` are
+         * effectively the head and tail of a doubly-linked list.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.leftSegments = null;
+
+        /**
+         * Segments representing the end of everything to the left of the
+         * `in` keyword. This can be used to move backward towards `leftSegments`.
+         * `leftSegments` and `endOfLeftSegments` are effectively the head
+         * and tail of a doubly-linked list.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.endOfLeftSegments = null;
+
+        /**
+         * The segments representing the left expression where `continue` will
+         * jump to. In `for-in` loops, `continue` must always re-execute the
+         * left expression each time through the loop. This contains the same
+         * segments as `leftSegments`, but is duplicated here so each loop
+         * context has the same property pointing to where `continue` should
+         * end up.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.continueDestSegments = null;
+    }
+}
+
+/**
+ * Represents the context for a `for-of` loop.
+ */
+class ForOfLoopContext extends LoopContextBase {
+
+    /**
+     * Creates a new instance.
+     * @param {LoopContext|null} upperContext The previous `LoopContext`.
+     * @param {string|null} label The label for the loop from an enclosing `LabeledStatement`.
+     * @param {BreakContext} breakContext The context for breaking the loop.
+     */
+    constructor(upperContext, label, breakContext) {
+        super(upperContext, "ForOfStatement", label, breakContext);
+
+        /**
+         * The segments that came immediately before the start of the loop.
+         * This allows you to traverse backwards out of the loop into the
+         * surrounding code. This is necessary to evaluate the right expression
+         * correctly, as it must be evaluated in the same way as the left
+         * expression, but the pointer to these segments would otherwise be
+         * lost if not stored on the instance. Once the right expression has
+         * been evaluated, this property is no longer used.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.prevSegments = null;
+
+        /**
+         * Segments representing the start of everything to the left of the
+         * `of` keyword. This can be used to move forward towards
+         * `endOfLeftSegments`. `leftSegments` and `endOfLeftSegments` are
+         * effectively the head and tail of a doubly-linked list.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.leftSegments = null;
+
+        /**
+         * Segments representing the end of everything to the left of the
+         * `of` keyword. This can be used to move backward towards `leftSegments`.
+         * `leftSegments` and `endOfLeftSegments` are effectively the head
+         * and tail of a doubly-linked list.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.endOfLeftSegments = null;
+
+        /**
+         * The segments representing the left expression where `continue` will
+         * jump to. In `for-in` loops, `continue` must always re-execute the
+         * left expression each time through the loop. This contains the same
+         * segments as `leftSegments`, but is duplicated here so each loop
+         * context has the same property pointing to where `continue` should
+         * end up.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.continueDestSegments = null;
+    }
+}
+
+/**
+ * Represents the context for any loop.
+ * @typedef {WhileLoopContext|DoWhileLoopContext|ForLoopContext|ForInLoopContext|ForOfLoopContext} LoopContext
+ */
+
+/**
+ * Represents the context for a `switch` statement.
+ */
+class SwitchContext {
+
+    /**
+     * Creates a new instance.
+     * @param {SwitchContext} upperContext The previous context.
+     * @param {boolean} hasCase Indicates if there is at least one `case` statement.
+     *      `default` doesn't count.
+     */
+    constructor(upperContext, hasCase) {
+
+        /**
+         * The previous context.
+         * @type {SwitchContext}
+         */
+        this.upper = upperContext;
+
+        /**
+         * Indicates if there is at least one `case` statement. `default` doesn't count.
+         * @type {boolean}
+         */
+        this.hasCase = hasCase;
+
+        /**
+         * The `default` keyword.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.defaultSegments = null;
+
+        /**
+         * The default case body starting segments.
+         * @type {Array<CodePathSegment>|null}
+         */
+        this.defaultBodySegments = null;
+
+        /**
+         * Indicates if a `default` case and is empty exists.
+         * @type {boolean}
+         */
+        this.foundEmptyDefault = false;
+
+        /**
+         * Indicates that a `default` exists and is the last case.
+         * @type {boolean}
+         */
+        this.lastIsDefault = false;
+
+        /**
+         * The number of fork contexts created. This is equivalent to the
+         * number of `case` statements plus a `default` statement (if present).
+         * @type {number}
+         */
+        this.forkCount = 0;
+    }
+}
+
+/**
+ * Represents the context for a `try` statement.
+ */
+class TryContext {
+
+    /**
+     * Creates a new instance.
+     * @param {TryContext} upperContext The previous context.
+     * @param {boolean} hasFinalizer Indicates if the `try` statement has a
+     *      `finally` block.
+     * @param {ForkContext} forkContext The enclosing fork context.
+     */
+    constructor(upperContext, hasFinalizer, forkContext) {
+
+        /**
+         * The previous context.
+         * @type {TryContext}
+         */
+        this.upper = upperContext;
+
+        /**
+         * Indicates if the `try` statement has a `finally` block.
+         * @type {boolean}
+         */
+        this.hasFinalizer = hasFinalizer;
+
+        /**
+         * Tracks the traversal position inside of the `try` statement. This is
+         * used to help determine the context necessary to create paths because
+         * a `try` statement may or may not have `catch` or `finally` blocks,
+         * and code paths behave differently in those blocks.
+         * @type {"try"|"catch"|"finally"}
+         */
+        this.position = "try";
+
+        /**
+         * If the `try` statement has a `finally` block, this affects how a
+         * `return` statement behaves in the `try` block. Without `finally`,
+         * `return` behaves as usual and doesn't require a fork; with `finally`,
+         * `return` forks into the `finally` block, so we need a fork context
+         * to track it.
+         * @type {ForkContext|null}
+         */
+        this.returnedForkContext = hasFinalizer
+            ? ForkContext.newEmpty(forkContext)
+            : null;
+
+        /**
+         * When a `throw` occurs inside of a `try` block, the code path forks
+         * into the `catch` or `finally` blocks, and this fork context tracks
+         * that path.
+         * @type {ForkContext}
+         */
+        this.thrownForkContext = ForkContext.newEmpty(forkContext);
+
+        /**
+         * Indicates if the last segment in the `try` block is reachable.
+         * @type {boolean}
+         */
+        this.lastOfTryIsReachable = false;
+
+        /**
+         * Indicates if the last segment in the `catch` block is reachable.
+         * @type {boolean}
+         */
+        this.lastOfCatchIsReachable = false;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Adds given segments into the `dest` array.
+ * If the `others` array does not include the given segments, adds to the `all`
+ * array as well.
+ *
+ * This adds only reachable and used segments.
+ * @param {CodePathSegment[]} dest A destination array (`returnedSegments` or `thrownSegments`).
+ * @param {CodePathSegment[]} others Another destination array (`returnedSegments` or `thrownSegments`).
+ * @param {CodePathSegment[]} all The unified destination array (`finalSegments`).
+ * @param {CodePathSegment[]} segments Segments to add.
+ * @returns {void}
+ */
+function addToReturnedOrThrown(dest, others, all, segments) {
+    for (let i = 0; i < segments.length; ++i) {
+        const segment = segments[i];
+
+        dest.push(segment);
+        if (!others.includes(segment)) {
+            all.push(segment);
+        }
+    }
+}
+
+/**
+ * Gets a loop context for a `continue` statement based on a given label.
+ * @param {CodePathState} state The state to search within.
+ * @param {string|null} label The label of a `continue` statement.
+ * @returns {LoopContext} A loop-context for a `continue` statement.
+ */
+function getContinueContext(state, label) {
+    if (!label) {
+        return state.loopContext;
+    }
+
+    let context = state.loopContext;
+
+    while (context) {
+        if (context.label === label) {
+            return context;
+        }
+        context = context.upper;
+    }
+
+    /* c8 ignore next */
+    return null;
+}
+
+/**
+ * Gets a context for a `break` statement.
+ * @param {CodePathState} state The state to search within.
+ * @param {string|null} label The label of a `break` statement.
+ * @returns {BreakContext} A context for a `break` statement.
+ */
+function getBreakContext(state, label) {
+    let context = state.breakContext;
+
+    while (context) {
+        if (label ? context.label === label : context.breakable) {
+            return context;
+        }
+        context = context.upper;
+    }
+
+    /* c8 ignore next */
+    return null;
+}
+
+/**
+ * Gets a context for a `return` statement. There is just one special case:
+ * if there is a `try` statement with a `finally` block, because that alters
+ * how `return` behaves; otherwise, this just passes through the given state.
+ * @param {CodePathState} state The state to search within
+ * @returns {TryContext|CodePathState} A context for a `return` statement.
+ */
+function getReturnContext(state) {
+    let context = state.tryContext;
+
+    while (context) {
+        if (context.hasFinalizer && context.position !== "finally") {
+            return context;
+        }
+        context = context.upper;
+    }
+
+    return state;
+}
+
+/**
+ * Gets a context for a `throw` statement. There is just one special case:
+ * if there is a `try` statement with a `finally` block and we are inside of
+ * a `catch` because that changes how `throw` behaves; otherwise, this just
+ * passes through the given state.
+ * @param {CodePathState} state The state to search within.
+ * @returns {TryContext|CodePathState} A context for a `throw` statement.
+ */
+function getThrowContext(state) {
+    let context = state.tryContext;
+
+    while (context) {
+        if (context.position === "try" ||
+            (context.hasFinalizer && context.position === "catch")
+        ) {
+            return context;
+        }
+        context = context.upper;
+    }
+
+    return state;
+}
+
+/**
+ * Removes a given value from a given array.
+ * @param {any[]} elements An array to remove the specific element.
+ * @param {any} value The value to be removed.
+ * @returns {void}
+ */
+function removeFromArray(elements, value) {
+    elements.splice(elements.indexOf(value), 1);
+}
+
+/**
+ * Disconnect given segments.
+ *
+ * This is used in a process for switch statements.
+ * If there is the "default" chunk before other cases, the order is different
+ * between node's and running's.
+ * @param {CodePathSegment[]} prevSegments Forward segments to disconnect.
+ * @param {CodePathSegment[]} nextSegments Backward segments to disconnect.
+ * @returns {void}
+ */
+function disconnectSegments(prevSegments, nextSegments) {
+    for (let i = 0; i < prevSegments.length; ++i) {
+        const prevSegment = prevSegments[i];
+        const nextSegment = nextSegments[i];
+
+        removeFromArray(prevSegment.nextSegments, nextSegment);
+        removeFromArray(prevSegment.allNextSegments, nextSegment);
+        removeFromArray(nextSegment.prevSegments, prevSegment);
+        removeFromArray(nextSegment.allPrevSegments, prevSegment);
+    }
+}
+
+/**
+ * Creates looping path between two arrays of segments, ensuring that there are
+ * paths going between matching segments in the arrays.
+ * @param {CodePathState} state The state to operate on.
+ * @param {CodePathSegment[]} unflattenedFromSegments Segments which are source.
+ * @param {CodePathSegment[]} unflattenedToSegments Segments which are destination.
+ * @returns {void}
+ */
+function makeLooped(state, unflattenedFromSegments, unflattenedToSegments) {
+
+    const fromSegments = CodePathSegment.flattenUnusedSegments(unflattenedFromSegments);
+    const toSegments = CodePathSegment.flattenUnusedSegments(unflattenedToSegments);
+    const end = Math.min(fromSegments.length, toSegments.length);
+
+    /*
+     * This loop effectively updates a doubly-linked list between two collections
+     * of segments making sure that segments in the same array indices are
+     * combined to create a path.
+     */
+    for (let i = 0; i < end; ++i) {
+
+        // get the segments in matching array indices
+        const fromSegment = fromSegments[i];
+        const toSegment = toSegments[i];
+
+        /*
+         * If the destination segment is reachable, then create a path from the
+         * source segment to the destination segment.
+         */
+        if (toSegment.reachable) {
+            fromSegment.nextSegments.push(toSegment);
+        }
+
+        /*
+         * If the source segment is reachable, then create a path from the
+         * destination segment back to the source segment.
+         */
+        if (fromSegment.reachable) {
+            toSegment.prevSegments.push(fromSegment);
+        }
+
+        /*
+         * Also update the arrays that don't care if the segments are reachable
+         * or not. This should always happen regardless of anything else.
+         */
+        fromSegment.allNextSegments.push(toSegment);
+        toSegment.allPrevSegments.push(fromSegment);
+
+        /*
+         * If the destination segment has at least two previous segments in its
+         * path then that means there was one previous segment before this iteration
+         * of the loop was executed. So, we need to mark the source segment as
+         * looped.
+         */
+        if (toSegment.allPrevSegments.length >= 2) {
+            CodePathSegment.markPrevSegmentAsLooped(toSegment, fromSegment);
+        }
+
+        // let the code path analyzer know that there's been a loop created
+        state.notifyLooped(fromSegment, toSegment);
+    }
+}
+
+/**
+ * Finalizes segments of `test` chunk of a ForStatement.
+ *
+ * - Adds `false` paths to paths which are leaving from the loop.
+ * - Sets `true` paths to paths which go to the body.
+ * @param {LoopContext} context A loop context to modify.
+ * @param {ChoiceContext} choiceContext A choice context of this loop.
+ * @param {CodePathSegment[]} head The current head paths.
+ * @returns {void}
+ */
+function finalizeTestSegmentsOfFor(context, choiceContext, head) {
+
+    /*
+     * If this choice context doesn't already contain paths from a
+     * child context, then add the current head to each potential path.
+     */
+    if (!choiceContext.processed) {
+        choiceContext.trueForkContext.add(head);
+        choiceContext.falseForkContext.add(head);
+        choiceContext.nullishForkContext.add(head);
+    }
+
+    /*
+     * If the test condition isn't a hardcoded truthy value, then `break`
+     * must follow the same path as if the test condition is false. To represent
+     * that, we append the path for when the loop test is false (represented by
+     * `falseForkContext`) to the `brokenForkContext`.
+     */
+    if (context.test !== true) {
+        context.brokenForkContext.addAll(choiceContext.falseForkContext);
+    }
+
+    context.endOfTestSegments = choiceContext.trueForkContext.makeNext(0, -1);
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * A class which manages state to analyze code paths.
+ */
+class CodePathState {
+
+    /**
+     * Creates a new instance.
+     * @param {IdGenerator} idGenerator An id generator to generate id for code
+     *   path segments.
+     * @param {Function} onLooped A callback function to notify looping.
+     */
+    constructor(idGenerator, onLooped) {
+
+        /**
+         * The ID generator to use when creating new segments.
+         * @type {IdGenerator}
+         */
+        this.idGenerator = idGenerator;
+
+        /**
+         * A callback function to call when there is a loop.
+         * @type {Function}
+         */
+        this.notifyLooped = onLooped;
+
+        /**
+         * The root fork context for this state.
+         * @type {ForkContext}
+         */
+        this.forkContext = ForkContext.newRoot(idGenerator);
+
+        /**
+         * Context for logical expressions, conditional expressions, `if` statements,
+         * and loops.
+         * @type {ChoiceContext}
+         */
+        this.choiceContext = null;
+
+        /**
+         * Context for `switch` statements.
+         * @type {SwitchContext}
+         */
+        this.switchContext = null;
+
+        /**
+         * Context for `try` statements.
+         * @type {TryContext}
+         */
+        this.tryContext = null;
+
+        /**
+         * Context for loop statements.
+         * @type {LoopContext}
+         */
+        this.loopContext = null;
+
+        /**
+         * Context for `break` statements.
+         * @type {BreakContext}
+         */
+        this.breakContext = null;
+
+        /**
+         * Context for `ChainExpression` nodes.
+         * @type {ChainContext}
+         */
+        this.chainContext = null;
+
+        /**
+         * An array that tracks the current segments in the state. The array
+         * starts empty and segments are added with each `onCodePathSegmentStart`
+         * event and removed with each `onCodePathSegmentEnd` event. Effectively,
+         * this is tracking the code path segment traversal as the state is
+         * modified.
+         * @type {Array<CodePathSegment>}
+         */
+        this.currentSegments = [];
+
+        /**
+         * Tracks the starting segment for this path. This value never changes.
+         * @type {CodePathSegment}
+         */
+        this.initialSegment = this.forkContext.head[0];
+
+        /**
+         * The final segments of the code path which are either `return` or `throw`.
+         * This is a union of the segments in `returnedForkContext` and `thrownForkContext`.
+         * @type {Array<CodePathSegment>}
+         */
+        this.finalSegments = [];
+
+        /**
+         * The final segments of the code path which are `return`. These
+         * segments are also contained in `finalSegments`.
+         * @type {Array<CodePathSegment>}
+         */
+        this.returnedForkContext = [];
+
+        /**
+         * The final segments of the code path which are `throw`. These
+         * segments are also contained in `finalSegments`.
+         * @type {Array<CodePathSegment>}
+         */
+        this.thrownForkContext = [];
+
+        /*
+         * We add an `add` method so that these look more like fork contexts and
+         * can be used interchangeably when a fork context is needed to add more
+         * segments to a path.
+         *
+         * Ultimately, we want anything added to `returned` or `thrown` to also
+         * be added to `final`. We only add reachable and used segments to these
+         * arrays.
+         */
+        const final = this.finalSegments;
+        const returned = this.returnedForkContext;
+        const thrown = this.thrownForkContext;
+
+        returned.add = addToReturnedOrThrown.bind(null, returned, thrown, final);
+        thrown.add = addToReturnedOrThrown.bind(null, thrown, returned, final);
+    }
+
+    /**
+     * A passthrough property exposing the current pointer as part of the API.
+     * @type {CodePathSegment[]}
+     */
+    get headSegments() {
+        return this.forkContext.head;
+    }
+
+    /**
+     * The parent forking context.
+     * This is used for the root of new forks.
+     * @type {ForkContext}
+     */
+    get parentForkContext() {
+        const current = this.forkContext;
+
+        return current && current.upper;
+    }
+
+    /**
+     * Creates and stacks new forking context.
+     * @param {boolean} forkLeavingPath A flag which shows being in a
+     *   "finally" block.
+     * @returns {ForkContext} The created context.
+     */
+    pushForkContext(forkLeavingPath) {
+        this.forkContext = ForkContext.newEmpty(
+            this.forkContext,
+            forkLeavingPath
+        );
+
+        return this.forkContext;
+    }
+
+    /**
+     * Pops and merges the last forking context.
+     * @returns {ForkContext} The last context.
+     */
+    popForkContext() {
+        const lastContext = this.forkContext;
+
+        this.forkContext = lastContext.upper;
+        this.forkContext.replaceHead(lastContext.makeNext(0, -1));
+
+        return lastContext;
+    }
+
+    /**
+     * Creates a new path.
+     * @returns {void}
+     */
+    forkPath() {
+        this.forkContext.add(this.parentForkContext.makeNext(-1, -1));
+    }
+
+    /**
+     * Creates a bypass path.
+     * This is used for such as IfStatement which does not have "else" chunk.
+     * @returns {void}
+     */
+    forkBypassPath() {
+        this.forkContext.add(this.parentForkContext.head);
+    }
+
+    //--------------------------------------------------------------------------
+    // ConditionalExpression, LogicalExpression, IfStatement
+    //--------------------------------------------------------------------------
+
+    /**
+     * Creates a context for ConditionalExpression, LogicalExpression, AssignmentExpression (logical assignments only),
+     * IfStatement, WhileStatement, DoWhileStatement, or ForStatement.
+     *
+     * LogicalExpressions have cases that it goes different paths between the
+     * `true` case and the `false` case.
+     *
+     * For Example:
+     *
+     *     if (a || b) {
+     *         foo();
+     *     } else {
+     *         bar();
+     *     }
+     *
+     * In this case, `b` is evaluated always in the code path of the `else`
+     * block, but it's not so in the code path of the `if` block.
+     * So there are 3 paths.
+     *
+     *     a -> foo();
+     *     a -> b -> foo();
+     *     a -> b -> bar();
+     * @param {string} kind A kind string.
+     *   If the new context is LogicalExpression's or AssignmentExpression's, this is `"&&"` or `"||"` or `"??"`.
+     *   If it's IfStatement's or ConditionalExpression's, this is `"test"`.
+     *   Otherwise, this is `"loop"`.
+     * @param {boolean} isForkingAsResult Indicates if the result of the choice
+     *      creates a fork.
+     * @returns {void}
+     */
+    pushChoiceContext(kind, isForkingAsResult) {
+        this.choiceContext = new ChoiceContext(this.choiceContext, kind, isForkingAsResult, this.forkContext);
+    }
+
+    /**
+     * Pops the last choice context and finalizes it.
+     * This is called upon leaving a node that represents a choice.
+     * @throws {Error} (Unreachable.)
+     * @returns {ChoiceContext} The popped context.
+     */
+    popChoiceContext() {
+        const poppedChoiceContext = this.choiceContext;
+        const forkContext = this.forkContext;
+        const head = forkContext.head;
+
+        this.choiceContext = poppedChoiceContext.upper;
+
+        switch (poppedChoiceContext.kind) {
+            case "&&":
+            case "||":
+            case "??":
+
+                /*
+                 * The `head` are the path of the right-hand operand.
+                 * If we haven't previously added segments from child contexts,
+                 * then we add these segments to all possible forks.
+                 */
+                if (!poppedChoiceContext.processed) {
+                    poppedChoiceContext.trueForkContext.add(head);
+                    poppedChoiceContext.falseForkContext.add(head);
+                    poppedChoiceContext.nullishForkContext.add(head);
+                }
+
+                /*
+                 * If this context is the left (test) expression for another choice
+                 * context, such as `a || b` in the expression `a || b || c`,
+                 * then we take the segments for this context and move them up
+                 * to the parent context.
+                 */
+                if (poppedChoiceContext.isForkingAsResult) {
+                    const parentContext = this.choiceContext;
+
+                    parentContext.trueForkContext.addAll(poppedChoiceContext.trueForkContext);
+                    parentContext.falseForkContext.addAll(poppedChoiceContext.falseForkContext);
+                    parentContext.nullishForkContext.addAll(poppedChoiceContext.nullishForkContext);
+                    parentContext.processed = true;
+
+                    // Exit early so we don't collapse all paths into one.
+                    return poppedChoiceContext;
+                }
+
+                break;
+
+            case "test":
+                if (!poppedChoiceContext.processed) {
+
+                    /*
+                     * The head segments are the path of the `if` block here.
+                     * Updates the `true` path with the end of the `if` block.
+                     */
+                    poppedChoiceContext.trueForkContext.clear();
+                    poppedChoiceContext.trueForkContext.add(head);
+                } else {
+
+                    /*
+                     * The head segments are the path of the `else` block here.
+                     * Updates the `false` path with the end of the `else`
+                     * block.
+                     */
+                    poppedChoiceContext.falseForkContext.clear();
+                    poppedChoiceContext.falseForkContext.add(head);
+                }
+
+                break;
+
+            case "loop":
+
+                /*
+                 * Loops are addressed in `popLoopContext()` so just return
+                 * the context without modification.
+                 */
+                return poppedChoiceContext;
+
+            /* c8 ignore next */
+            default:
+                throw new Error("unreachable");
+        }
+
+        /*
+         * Merge the true path with the false path to create a single path.
+         */
+        const combinedForkContext = poppedChoiceContext.trueForkContext;
+
+        combinedForkContext.addAll(poppedChoiceContext.falseForkContext);
+        forkContext.replaceHead(combinedForkContext.makeNext(0, -1));
+
+        return poppedChoiceContext;
+    }
+
+    /**
+     * Creates a code path segment to represent right-hand operand of a logical
+     * expression.
+     * This is called in the preprocessing phase when entering a node.
+     * @throws {Error} (Unreachable.)
+     * @returns {void}
+     */
+    makeLogicalRight() {
+        const currentChoiceContext = this.choiceContext;
+        const forkContext = this.forkContext;
+
+        if (currentChoiceContext.processed) {
+
+            /*
+             * This context was already assigned segments from a child
+             * choice context. In this case, we are concerned only about
+             * the path that does not short-circuit and so ends up on the
+             * right-hand operand of the logical expression.
+             */
+            let prevForkContext;
+
+            switch (currentChoiceContext.kind) {
+                case "&&": // if true then go to the right-hand side.
+                    prevForkContext = currentChoiceContext.trueForkContext;
+                    break;
+                case "||": // if false then go to the right-hand side.
+                    prevForkContext = currentChoiceContext.falseForkContext;
+                    break;
+                case "??": // Both true/false can short-circuit, so needs the third path to go to the right-hand side. That's nullishForkContext.
+                    prevForkContext = currentChoiceContext.nullishForkContext;
+                    break;
+                default:
+                    throw new Error("unreachable");
+            }
+
+            /*
+             * Create the segment for the right-hand operand of the logical expression
+             * and adjust the fork context pointer to point there. The right-hand segment
+             * is added at the end of all segments in `prevForkContext`.
+             */
+            forkContext.replaceHead(prevForkContext.makeNext(0, -1));
+
+            /*
+             * We no longer need this list of segments.
+             *
+             * Reset `processed` because we've removed the segments from the child
+             * choice context. This allows `popChoiceContext()` to continue adding
+             * segments later.
+             */
+            prevForkContext.clear();
+            currentChoiceContext.processed = false;
+
+        } else {
+
+            /*
+             * This choice context was not assigned segments from a child
+             * choice context, which means that it's a terminal logical
+             * expression.
+             *
+             * `head` is the segments for the left-hand operand of the
+             * logical expression.
+             *
+             * Each of the fork contexts below are empty at this point. We choose
+             * the path(s) that will short-circuit and add the segment for the
+             * left-hand operand to it. Ultimately, this will be the only segment
+             * in that path due to the short-circuting, so we are just seeding
+             * these paths to start.
+             */
+            switch (currentChoiceContext.kind) {
+                case "&&":
+
+                    /*
+                     * In most contexts, when a && expression evaluates to false,
+                     * it short circuits, so we need to account for that by setting
+                     * the `falseForkContext` to the left operand.
+                     *
+                     * When a && expression is the left-hand operand for a ??
+                     * expression, such as `(a && b) ?? c`, a nullish value will
+                     * also short-circuit in a different way than a false value,
+                     * so we also set the `nullishForkContext` to the left operand.
+                     * This path is only used with a ?? expression and is thrown
+                     * away for any other type of logical expression, so it's safe
+                     * to always add.
+                     */
+                    currentChoiceContext.falseForkContext.add(forkContext.head);
+                    currentChoiceContext.nullishForkContext.add(forkContext.head);
+                    break;
+                case "||": // the true path can short-circuit.
+                    currentChoiceContext.trueForkContext.add(forkContext.head);
+                    break;
+                case "??": // both can short-circuit.
+                    currentChoiceContext.trueForkContext.add(forkContext.head);
+                    currentChoiceContext.falseForkContext.add(forkContext.head);
+                    break;
+                default:
+                    throw new Error("unreachable");
+            }
+
+            /*
+             * Create the segment for the right-hand operand of the logical expression
+             * and adjust the fork context pointer to point there.
+             */
+            forkContext.replaceHead(forkContext.makeNext(-1, -1));
+        }
+    }
+
+    /**
+     * Makes a code path segment of the `if` block.
+     * @returns {void}
+     */
+    makeIfConsequent() {
+        const context = this.choiceContext;
+        const forkContext = this.forkContext;
+
+        /*
+         * If any result were not transferred from child contexts,
+         * this sets the head segments to both cases.
+         * The head segments are the path of the test expression.
+         */
+        if (!context.processed) {
+            context.trueForkContext.add(forkContext.head);
+            context.falseForkContext.add(forkContext.head);
+            context.nullishForkContext.add(forkContext.head);
+        }
+
+        context.processed = false;
+
+        // Creates new path from the `true` case.
+        forkContext.replaceHead(
+            context.trueForkContext.makeNext(0, -1)
+        );
+    }
+
+    /**
+     * Makes a code path segment of the `else` block.
+     * @returns {void}
+     */
+    makeIfAlternate() {
+        const context = this.choiceContext;
+        const forkContext = this.forkContext;
+
+        /*
+         * The head segments are the path of the `if` block.
+         * Updates the `true` path with the end of the `if` block.
+         */
+        context.trueForkContext.clear();
+        context.trueForkContext.add(forkContext.head);
+        context.processed = true;
+
+        // Creates new path from the `false` case.
+        forkContext.replaceHead(
+            context.falseForkContext.makeNext(0, -1)
+        );
+    }
+
+    //--------------------------------------------------------------------------
+    // ChainExpression
+    //--------------------------------------------------------------------------
+
+    /**
+     * Pushes a new `ChainExpression` context to the stack. This method is
+     * called when entering a `ChainExpression` node. A chain context is used to
+     * count forking in the optional chain then merge them on the exiting from the
+     * `ChainExpression` node.
+     * @returns {void}
+     */
+    pushChainContext() {
+        this.chainContext = new ChainContext(this.chainContext);
+    }
+
+    /**
+     * Pop a `ChainExpression` context from the stack. This method is called on
+     * exiting from each `ChainExpression` node. This merges all forks of the
+     * last optional chaining.
+     * @returns {void}
+     */
+    popChainContext() {
+        const context = this.chainContext;
+
+        this.chainContext = context.upper;
+
+        // pop all choice contexts of this.
+        for (let i = context.choiceContextCount; i > 0; --i) {
+            this.popChoiceContext();
+        }
+    }
+
+    /**
+     * Create a choice context for optional access.
+     * This method is called on entering to each `(Call|Member)Expression[optional=true]` node.
+     * This creates a choice context as similar to `LogicalExpression[operator="??"]` node.
+     * @returns {void}
+     */
+    makeOptionalNode() {
+        if (this.chainContext) {
+            this.chainContext.choiceContextCount += 1;
+            this.pushChoiceContext("??", false);
+        }
+    }
+
+    /**
+     * Create a fork.
+     * This method is called on entering to the `arguments|property` property of each `(Call|Member)Expression` node.
+     * @returns {void}
+     */
+    makeOptionalRight() {
+        if (this.chainContext) {
+            this.makeLogicalRight();
+        }
+    }
+
+    //--------------------------------------------------------------------------
+    // SwitchStatement
+    //--------------------------------------------------------------------------
+
+    /**
+     * Creates a context object of SwitchStatement and stacks it.
+     * @param {boolean} hasCase `true` if the switch statement has one or more
+     *   case parts.
+     * @param {string|null} label The label text.
+     * @returns {void}
+     */
+    pushSwitchContext(hasCase, label) {
+        this.switchContext = new SwitchContext(this.switchContext, hasCase);
+        this.pushBreakContext(true, label);
+    }
+
+    /**
+     * Pops the last context of SwitchStatement and finalizes it.
+     *
+     * - Disposes all forking stack for `case` and `default`.
+     * - Creates the next code path segment from `context.brokenForkContext`.
+     * - If the last `SwitchCase` node is not a `default` part, creates a path
+     *   to the `default` body.
+     * @returns {void}
+     */
+    popSwitchContext() {
+        const context = this.switchContext;
+
+        this.switchContext = context.upper;
+
+        const forkContext = this.forkContext;
+        const brokenForkContext = this.popBreakContext().brokenForkContext;
+
+        if (context.forkCount === 0) {
+
+            /*
+             * When there is only one `default` chunk and there is one or more
+             * `break` statements, even if forks are nothing, it needs to merge
+             * those.
+             */
+            if (!brokenForkContext.empty) {
+                brokenForkContext.add(forkContext.makeNext(-1, -1));
+                forkContext.replaceHead(brokenForkContext.makeNext(0, -1));
+            }
+
+            return;
+        }
+
+        const lastSegments = forkContext.head;
+
+        this.forkBypassPath();
+        const lastCaseSegments = forkContext.head;
+
+        /*
+         * `brokenForkContext` is used to make the next segment.
+         * It must add the last segment into `brokenForkContext`.
+         */
+        brokenForkContext.add(lastSegments);
+
+        /*
+         * Any value that doesn't match a `case` test should flow to the default
+         * case. That happens normally when the default case is last in the `switch`,
+         * but if it's not, we need to rewire some of the paths to be correct.
+         */
+        if (!context.lastIsDefault) {
+            if (context.defaultBodySegments) {
+
+                /*
+                 * There is a non-empty default case, so remove the path from the `default`
+                 * label to its body for an accurate representation.
+                 */
+                disconnectSegments(context.defaultSegments, context.defaultBodySegments);
+
+                /*
+                 * Connect the path from the last non-default case to the body of the
+                 * default case.
+                 */
+                makeLooped(this, lastCaseSegments, context.defaultBodySegments);
+
+            } else {
+
+                /*
+                 * There is no default case, so we treat this as if the last case
+                 * had a `break` in it.
+                 */
+                brokenForkContext.add(lastCaseSegments);
+            }
+        }
+
+        // Traverse up to the original fork context for the `switch` statement
+        for (let i = 0; i < context.forkCount; ++i) {
+            this.forkContext = this.forkContext.upper;
+        }
+
+        /*
+         * Creates a path from all `brokenForkContext` paths.
+         * This is a path after `switch` statement.
+         */
+        this.forkContext.replaceHead(brokenForkContext.makeNext(0, -1));
+    }
+
+    /**
+     * Makes a code path segment for a `SwitchCase` node.
+     * @param {boolean} isCaseBodyEmpty `true` if the body is empty.
+     * @param {boolean} isDefaultCase `true` if the body is the default case.
+     * @returns {void}
+     */
+    makeSwitchCaseBody(isCaseBodyEmpty, isDefaultCase) {
+        const context = this.switchContext;
+
+        if (!context.hasCase) {
+            return;
+        }
+
+        /*
+         * Merge forks.
+         * The parent fork context has two segments.
+         * Those are from the current `case` and the body of the previous case.
+         */
+        const parentForkContext = this.forkContext;
+        const forkContext = this.pushForkContext();
+
+        forkContext.add(parentForkContext.makeNext(0, -1));
+
+        /*
+         * Add information about the default case.
+         *
+         * The purpose of this is to identify the starting segments for the
+         * default case to make sure there is a path there.
+         */
+        if (isDefaultCase) {
+
+            /*
+             * This is the default case in the `switch`.
+             *
+             * We first save the current pointer as `defaultSegments` to point
+             * to the `default` keyword.
+             */
+            context.defaultSegments = parentForkContext.head;
+
+            /*
+             * If the body of the case is empty then we just set
+             * `foundEmptyDefault` to true; otherwise, we save a reference
+             * to the current pointer as `defaultBodySegments`.
+             */
+            if (isCaseBodyEmpty) {
+                context.foundEmptyDefault = true;
+            } else {
+                context.defaultBodySegments = forkContext.head;
+            }
+
+        } else {
+
+            /*
+             * This is not the default case in the `switch`.
+             *
+             * If it's not empty and there is already an empty default case found,
+             * that means the default case actually comes before this case,
+             * and that it will fall through to this case. So, we can now
+             * ignore the previous default case (reset `foundEmptyDefault` to false)
+             * and set `defaultBodySegments` to the current segments because this is
+             * effectively the new default case.
+             */
+            if (!isCaseBodyEmpty && context.foundEmptyDefault) {
+                context.foundEmptyDefault = false;
+                context.defaultBodySegments = forkContext.head;
+            }
+        }
+
+        // keep track if the default case ends up last
+        context.lastIsDefault = isDefaultCase;
+        context.forkCount += 1;
+    }
+
+    //--------------------------------------------------------------------------
+    // TryStatement
+    //--------------------------------------------------------------------------
+
+    /**
+     * Creates a context object of TryStatement and stacks it.
+     * @param {boolean} hasFinalizer `true` if the try statement has a
+     *   `finally` block.
+     * @returns {void}
+     */
+    pushTryContext(hasFinalizer) {
+        this.tryContext = new TryContext(this.tryContext, hasFinalizer, this.forkContext);
+    }
+
+    /**
+     * Pops the last context of TryStatement and finalizes it.
+     * @returns {void}
+     */
+    popTryContext() {
+        const context = this.tryContext;
+
+        this.tryContext = context.upper;
+
+        /*
+         * If we're inside the `catch` block, that means there is no `finally`,
+         * so we can process the `try` and `catch` blocks the simple way and
+         * merge their two paths.
+         */
+        if (context.position === "catch") {
+            this.popForkContext();
+            return;
+        }
+
+        /*
+         * The following process is executed only when there is a `finally`
+         * block.
+         */
+
+        const originalReturnedForkContext = context.returnedForkContext;
+        const originalThrownForkContext = context.thrownForkContext;
+
+        // no `return` or `throw` in `try` or `catch` so there's nothing left to do
+        if (originalReturnedForkContext.empty && originalThrownForkContext.empty) {
+            return;
+        }
+
+        /*
+         * The following process is executed only when there is a `finally`
+         * block and there was a `return` or `throw` in the `try` or `catch`
+         * blocks.
+         */
+
+        // Separate head to normal paths and leaving paths.
+        const headSegments = this.forkContext.head;
+
+        this.forkContext = this.forkContext.upper;
+        const normalSegments = headSegments.slice(0, headSegments.length / 2 | 0);
+        const leavingSegments = headSegments.slice(headSegments.length / 2 | 0);
+
+        // Forwards the leaving path to upper contexts.
+        if (!originalReturnedForkContext.empty) {
+            getReturnContext(this).returnedForkContext.add(leavingSegments);
+        }
+        if (!originalThrownForkContext.empty) {
+            getThrowContext(this).thrownForkContext.add(leavingSegments);
+        }
+
+        // Sets the normal path as the next.
+        this.forkContext.replaceHead(normalSegments);
+
+        /*
+         * If both paths of the `try` block and the `catch` block are
+         * unreachable, the next path becomes unreachable as well.
+         */
+        if (!context.lastOfTryIsReachable && !context.lastOfCatchIsReachable) {
+            this.forkContext.makeUnreachable();
+        }
+    }
+
+    /**
+     * Makes a code path segment for a `catch` block.
+     * @returns {void}
+     */
+    makeCatchBlock() {
+        const context = this.tryContext;
+        const forkContext = this.forkContext;
+        const originalThrownForkContext = context.thrownForkContext;
+
+        /*
+         * We are now in a catch block so we need to update the context
+         * with that information. This includes creating a new fork
+         * context in case we encounter any `throw` statements here.
+         */
+        context.position = "catch";
+        context.thrownForkContext = ForkContext.newEmpty(forkContext);
+        context.lastOfTryIsReachable = forkContext.reachable;
+
+        // Merge the thrown paths from the `try` and `catch` blocks
+        originalThrownForkContext.add(forkContext.head);
+        const thrownSegments = originalThrownForkContext.makeNext(0, -1);
+
+        // Fork to a bypass and the merged thrown path.
+        this.pushForkContext();
+        this.forkBypassPath();
+        this.forkContext.add(thrownSegments);
+    }
+
+    /**
+     * Makes a code path segment for a `finally` block.
+     *
+     * In the `finally` block, parallel paths are created. The parallel paths
+     * are used as leaving-paths. The leaving-paths are paths from `return`
+     * statements and `throw` statements in a `try` block or a `catch` block.
+     * @returns {void}
+     */
+    makeFinallyBlock() {
+        const context = this.tryContext;
+        let forkContext = this.forkContext;
+        const originalReturnedForkContext = context.returnedForkContext;
+        const originalThrownForContext = context.thrownForkContext;
+        const headOfLeavingSegments = forkContext.head;
+
+        // Update state.
+        if (context.position === "catch") {
+
+            // Merges two paths from the `try` block and `catch` block.
+            this.popForkContext();
+            forkContext = this.forkContext;
+
+            context.lastOfCatchIsReachable = forkContext.reachable;
+        } else {
+            context.lastOfTryIsReachable = forkContext.reachable;
+        }
+
+
+        context.position = "finally";
+
+        /*
+         * If there was no `return` or `throw` in either the `try` or `catch`
+         * blocks, then there's no further code paths to create for `finally`.
+         */
+        if (originalReturnedForkContext.empty && originalThrownForContext.empty) {
+
+            // This path does not leave.
+            return;
+        }
+
+        /*
+         * Create a parallel segment from merging returned and thrown.
+         * This segment will leave at the end of this `finally` block.
+         */
+        const segments = forkContext.makeNext(-1, -1);
+
+        for (let i = 0; i < forkContext.count; ++i) {
+            const prevSegsOfLeavingSegment = [headOfLeavingSegments[i]];
+
+            for (let j = 0; j < originalReturnedForkContext.segmentsList.length; ++j) {
+                prevSegsOfLeavingSegment.push(originalReturnedForkContext.segmentsList[j][i]);
+            }
+            for (let j = 0; j < originalThrownForContext.segmentsList.length; ++j) {
+                prevSegsOfLeavingSegment.push(originalThrownForContext.segmentsList[j][i]);
+            }
+
+            segments.push(
+                CodePathSegment.newNext(
+                    this.idGenerator.next(),
+                    prevSegsOfLeavingSegment
+                )
+            );
+        }
+
+        this.pushForkContext(true);
+        this.forkContext.add(segments);
+    }
+
+    /**
+     * Makes a code path segment from the first throwable node to the `catch`
+     * block or the `finally` block.
+     * @returns {void}
+     */
+    makeFirstThrowablePathInTryBlock() {
+        const forkContext = this.forkContext;
+
+        if (!forkContext.reachable) {
+            return;
+        }
+
+        const context = getThrowContext(this);
+
+        if (context === this ||
+            context.position !== "try" ||
+            !context.thrownForkContext.empty
+        ) {
+            return;
+        }
+
+        context.thrownForkContext.add(forkContext.head);
+        forkContext.replaceHead(forkContext.makeNext(-1, -1));
+    }
+
+    //--------------------------------------------------------------------------
+    // Loop Statements
+    //--------------------------------------------------------------------------
+
+    /**
+     * Creates a context object of a loop statement and stacks it.
+     * @param {string} type The type of the node which was triggered. One of
+     *   `WhileStatement`, `DoWhileStatement`, `ForStatement`, `ForInStatement`,
+     *   and `ForStatement`.
+     * @param {string|null} label A label of the node which was triggered.
+     * @throws {Error} (Unreachable - unknown type.)
+     * @returns {void}
+     */
+    pushLoopContext(type, label) {
+        const forkContext = this.forkContext;
+
+        // All loops need a path to account for `break` statements
+        const breakContext = this.pushBreakContext(true, label);
+
+        switch (type) {
+            case "WhileStatement":
+                this.pushChoiceContext("loop", false);
+                this.loopContext = new WhileLoopContext(this.loopContext, label, breakContext);
+                break;
+
+            case "DoWhileStatement":
+                this.pushChoiceContext("loop", false);
+                this.loopContext = new DoWhileLoopContext(this.loopContext, label, breakContext, forkContext);
+                break;
+
+            case "ForStatement":
+                this.pushChoiceContext("loop", false);
+                this.loopContext = new ForLoopContext(this.loopContext, label, breakContext);
+                break;
+
+            case "ForInStatement":
+                this.loopContext = new ForInLoopContext(this.loopContext, label, breakContext);
+                break;
+
+            case "ForOfStatement":
+                this.loopContext = new ForOfLoopContext(this.loopContext, label, breakContext);
+                break;
+
+            /* c8 ignore next */
+            default:
+                throw new Error(`unknown type: "${type}"`);
+        }
+    }
+
+    /**
+     * Pops the last context of a loop statement and finalizes it.
+     * @throws {Error} (Unreachable - unknown type.)
+     * @returns {void}
+     */
+    popLoopContext() {
+        const context = this.loopContext;
+
+        this.loopContext = context.upper;
+
+        const forkContext = this.forkContext;
+        const brokenForkContext = this.popBreakContext().brokenForkContext;
+
+        // Creates a looped path.
+        switch (context.type) {
+            case "WhileStatement":
+            case "ForStatement":
+                this.popChoiceContext();
+
+                /*
+                 * Creates the path from the end of the loop body up to the
+                 * location where `continue` would jump to.
+                 */
+                makeLooped(
+                    this,
+                    forkContext.head,
+                    context.continueDestSegments
+                );
+                break;
+
+            case "DoWhileStatement": {
+                const choiceContext = this.popChoiceContext();
+
+                if (!choiceContext.processed) {
+                    choiceContext.trueForkContext.add(forkContext.head);
+                    choiceContext.falseForkContext.add(forkContext.head);
+                }
+
+                /*
+                 * If this isn't a hardcoded `true` condition, then `break`
+                 * should continue down the path as if the condition evaluated
+                 * to false.
+                 */
+                if (context.test !== true) {
+                    brokenForkContext.addAll(choiceContext.falseForkContext);
+                }
+
+                /*
+                 * When the condition is true, the loop continues back to the top,
+                 * so create a path from each possible true condition back to the
+                 * top of the loop.
+                 */
+                const segmentsList = choiceContext.trueForkContext.segmentsList;
+
+                for (let i = 0; i < segmentsList.length; ++i) {
+                    makeLooped(
+                        this,
+                        segmentsList[i],
+                        context.entrySegments
+                    );
+                }
+                break;
+            }
+
+            case "ForInStatement":
+            case "ForOfStatement":
+                brokenForkContext.add(forkContext.head);
+
+                /*
+                 * Creates the path from the end of the loop body up to the
+                 * left expression (left of `in` or `of`) of the loop.
+                 */
+                makeLooped(
+                    this,
+                    forkContext.head,
+                    context.leftSegments
+                );
+                break;
+
+            /* c8 ignore next */
+            default:
+                throw new Error("unreachable");
+        }
+
+        /*
+         * If there wasn't a `break` statement in the loop, then we're at
+         * the end of the loop's path, so we make an unreachable segment
+         * to mark that.
+         *
+         * If there was a `break` statement, then we continue on into the
+         * `brokenForkContext`.
+         */
+        if (brokenForkContext.empty) {
+            forkContext.replaceHead(forkContext.makeUnreachable(-1, -1));
+        } else {
+            forkContext.replaceHead(brokenForkContext.makeNext(0, -1));
+        }
+    }
+
+    /**
+     * Makes a code path segment for the test part of a WhileStatement.
+     * @param {boolean|undefined} test The test value (only when constant).
+     * @returns {void}
+     */
+    makeWhileTest(test) {
+        const context = this.loopContext;
+        const forkContext = this.forkContext;
+        const testSegments = forkContext.makeNext(0, -1);
+
+        // Update state.
+        context.test = test;
+        context.continueDestSegments = testSegments;
+        forkContext.replaceHead(testSegments);
+    }
+
+    /**
+     * Makes a code path segment for the body part of a WhileStatement.
+     * @returns {void}
+     */
+    makeWhileBody() {
+        const context = this.loopContext;
+        const choiceContext = this.choiceContext;
+        const forkContext = this.forkContext;
+
+        if (!choiceContext.processed) {
+            choiceContext.trueForkContext.add(forkContext.head);
+            choiceContext.falseForkContext.add(forkContext.head);
+        }
+
+        /*
+         * If this isn't a hardcoded `true` condition, then `break`
+         * should continue down the path as if the condition evaluated
+         * to false.
+         */
+        if (context.test !== true) {
+            context.brokenForkContext.addAll(choiceContext.falseForkContext);
+        }
+        forkContext.replaceHead(choiceContext.trueForkContext.makeNext(0, -1));
+    }
+
+    /**
+     * Makes a code path segment for the body part of a DoWhileStatement.
+     * @returns {void}
+     */
+    makeDoWhileBody() {
+        const context = this.loopContext;
+        const forkContext = this.forkContext;
+        const bodySegments = forkContext.makeNext(-1, -1);
+
+        // Update state.
+        context.entrySegments = bodySegments;
+        forkContext.replaceHead(bodySegments);
+    }
+
+    /**
+     * Makes a code path segment for the test part of a DoWhileStatement.
+     * @param {boolean|undefined} test The test value (only when constant).
+     * @returns {void}
+     */
+    makeDoWhileTest(test) {
+        const context = this.loopContext;
+        const forkContext = this.forkContext;
+
+        context.test = test;
+
+        /*
+         * If there is a `continue` statement in the loop then `continueForkContext`
+         * won't be empty. We wire up the path from `continue` to the loop
+         * test condition and then continue the traversal in the root fork context.
+         */
+        if (!context.continueForkContext.empty) {
+            context.continueForkContext.add(forkContext.head);
+            const testSegments = context.continueForkContext.makeNext(0, -1);
+
+            forkContext.replaceHead(testSegments);
+        }
+    }
+
+    /**
+     * Makes a code path segment for the test part of a ForStatement.
+     * @param {boolean|undefined} test The test value (only when constant).
+     * @returns {void}
+     */
+    makeForTest(test) {
+        const context = this.loopContext;
+        const forkContext = this.forkContext;
+        const endOfInitSegments = forkContext.head;
+        const testSegments = forkContext.makeNext(-1, -1);
+
+        /*
+         * Update the state.
+         *
+         * The `continueDestSegments` are set to `testSegments` because we
+         * don't yet know if there is an update expression in this loop. So,
+         * from what we already know at this point, a `continue` statement
+         * will jump back to the test expression.
+         */
+        context.test = test;
+        context.endOfInitSegments = endOfInitSegments;
+        context.continueDestSegments = context.testSegments = testSegments;
+        forkContext.replaceHead(testSegments);
+    }
+
+    /**
+     * Makes a code path segment for the update part of a ForStatement.
+     * @returns {void}
+     */
+    makeForUpdate() {
+        const context = this.loopContext;
+        const choiceContext = this.choiceContext;
+        const forkContext = this.forkContext;
+
+        // Make the next paths of the test.
+        if (context.testSegments) {
+            finalizeTestSegmentsOfFor(
+                context,
+                choiceContext,
+                forkContext.head
+            );
+        } else {
+            context.endOfInitSegments = forkContext.head;
+        }
+
+        /*
+         * Update the state.
+         *
+         * The `continueDestSegments` are now set to `updateSegments` because we
+         * know there is an update expression in this loop. So, a `continue` statement
+         * in the loop will jump to the update expression first, and then to any
+         * test expression the loop might have.
+         */
+        const updateSegments = forkContext.makeDisconnected(-1, -1);
+
+        context.continueDestSegments = context.updateSegments = updateSegments;
+        forkContext.replaceHead(updateSegments);
+    }
+
+    /**
+     * Makes a code path segment for the body part of a ForStatement.
+     * @returns {void}
+     */
+    makeForBody() {
+        const context = this.loopContext;
+        const choiceContext = this.choiceContext;
+        const forkContext = this.forkContext;
+
+        /*
+         * Determine what to do based on which part of the `for` loop are present.
+         * 1. If there is an update expression, then `updateSegments` is not null and
+         *    we need to assign `endOfUpdateSegments`, and if there is a test
+         *    expression, we then need to create the looped path to get back to
+         *    the test condition.
+         * 2. If there is no update expression but there is a test expression,
+         *    then we only need to update the test segment information.
+         * 3. If there is no update expression and no test expression, then we
+         *    just save `endOfInitSegments`.
+         */
+        if (context.updateSegments) {
+            context.endOfUpdateSegments = forkContext.head;
+
+            /*
+             * In a `for` loop that has both an update expression and a test
+             * condition, execution flows from the test expression into the
+             * loop body, to the update expression, and then back to the test
+             * expression to determine if the loop should continue.
+             *
+             * To account for that, we need to make a path from the end of the
+             * update expression to the start of the test expression. This is
+             * effectively what creates the loop in the code path.
+             */
+            if (context.testSegments) {
+                makeLooped(
+                    this,
+                    context.endOfUpdateSegments,
+                    context.testSegments
+                );
+            }
+        } else if (context.testSegments) {
+            finalizeTestSegmentsOfFor(
+                context,
+                choiceContext,
+                forkContext.head
+            );
+        } else {
+            context.endOfInitSegments = forkContext.head;
+        }
+
+        let bodySegments = context.endOfTestSegments;
+
+        /*
+         * If there is a test condition, then there `endOfTestSegments` is also
+         * the start of the loop body. If there isn't a test condition then
+         * `bodySegments` will be null and we need to look elsewhere to find
+         * the start of the body.
+         *
+         * The body starts at the end of the init expression and ends at the end
+         * of the update expression, so we use those locations to determine the
+         * body segments.
+         */
+        if (!bodySegments) {
+
+            const prevForkContext = ForkContext.newEmpty(forkContext);
+
+            prevForkContext.add(context.endOfInitSegments);
+            if (context.endOfUpdateSegments) {
+                prevForkContext.add(context.endOfUpdateSegments);
+            }
+
+            bodySegments = prevForkContext.makeNext(0, -1);
+        }
+
+        /*
+         * If there was no test condition and no update expression, then
+         * `continueDestSegments` will be null. In that case, a
+         * `continue` should skip directly to the body of the loop.
+         * Otherwise, we want to keep the current `continueDestSegments`.
+         */
+        context.continueDestSegments = context.continueDestSegments || bodySegments;
+
+        // move pointer to the body
+        forkContext.replaceHead(bodySegments);
+    }
+
+    /**
+     * Makes a code path segment for the left part of a ForInStatement and a
+     * ForOfStatement.
+     * @returns {void}
+     */
+    makeForInOfLeft() {
+        const context = this.loopContext;
+        const forkContext = this.forkContext;
+        const leftSegments = forkContext.makeDisconnected(-1, -1);
+
+        // Update state.
+        context.prevSegments = forkContext.head;
+        context.leftSegments = context.continueDestSegments = leftSegments;
+        forkContext.replaceHead(leftSegments);
+    }
+
+    /**
+     * Makes a code path segment for the right part of a ForInStatement and a
+     * ForOfStatement.
+     * @returns {void}
+     */
+    makeForInOfRight() {
+        const context = this.loopContext;
+        const forkContext = this.forkContext;
+        const temp = ForkContext.newEmpty(forkContext);
+
+        temp.add(context.prevSegments);
+        const rightSegments = temp.makeNext(-1, -1);
+
+        // Update state.
+        context.endOfLeftSegments = forkContext.head;
+        forkContext.replaceHead(rightSegments);
+    }
+
+    /**
+     * Makes a code path segment for the body part of a ForInStatement and a
+     * ForOfStatement.
+     * @returns {void}
+     */
+    makeForInOfBody() {
+        const context = this.loopContext;
+        const forkContext = this.forkContext;
+        const temp = ForkContext.newEmpty(forkContext);
+
+        temp.add(context.endOfLeftSegments);
+        const bodySegments = temp.makeNext(-1, -1);
+
+        // Make a path: `right` -> `left`.
+        makeLooped(this, forkContext.head, context.leftSegments);
+
+        // Update state.
+        context.brokenForkContext.add(forkContext.head);
+        forkContext.replaceHead(bodySegments);
+    }
+
+    //--------------------------------------------------------------------------
+    // Control Statements
+    //--------------------------------------------------------------------------
+
+    /**
+     * Creates new context in which a `break` statement can be used. This occurs inside of a loop,
+     * labeled statement, or switch statement.
+     * @param {boolean} breakable Indicates if we are inside a statement where
+     *      `break` without a label will exit the statement.
+     * @param {string|null} label The label associated with the statement.
+     * @returns {BreakContext} The new context.
+     */
+    pushBreakContext(breakable, label) {
+        this.breakContext = new BreakContext(this.breakContext, breakable, label, this.forkContext);
+        return this.breakContext;
+    }
+
+    /**
+     * Removes the top item of the break context stack.
+     * @returns {Object} The removed context.
+     */
+    popBreakContext() {
+        const context = this.breakContext;
+        const forkContext = this.forkContext;
+
+        this.breakContext = context.upper;
+
+        // Process this context here for other than switches and loops.
+        if (!context.breakable) {
+            const brokenForkContext = context.brokenForkContext;
+
+            if (!brokenForkContext.empty) {
+                brokenForkContext.add(forkContext.head);
+                forkContext.replaceHead(brokenForkContext.makeNext(0, -1));
+            }
+        }
+
+        return context;
+    }
+
+    /**
+     * Makes a path for a `break` statement.
+     *
+     * It registers the head segment to a context of `break`.
+     * It makes new unreachable segment, then it set the head with the segment.
+     * @param {string|null} label A label of the break statement.
+     * @returns {void}
+     */
+    makeBreak(label) {
+        const forkContext = this.forkContext;
+
+        if (!forkContext.reachable) {
+            return;
+        }
+
+        const context = getBreakContext(this, label);
+
+
+        if (context) {
+            context.brokenForkContext.add(forkContext.head);
+        }
+
+        /* c8 ignore next */
+        forkContext.replaceHead(forkContext.makeUnreachable(-1, -1));
+    }
+
+    /**
+     * Makes a path for a `continue` statement.
+     *
+     * It makes a looping path.
+     * It makes new unreachable segment, then it set the head with the segment.
+     * @param {string|null} label A label of the continue statement.
+     * @returns {void}
+     */
+    makeContinue(label) {
+        const forkContext = this.forkContext;
+
+        if (!forkContext.reachable) {
+            return;
+        }
+
+        const context = getContinueContext(this, label);
+
+        if (context) {
+            if (context.continueDestSegments) {
+                makeLooped(this, forkContext.head, context.continueDestSegments);
+
+                // If the context is a for-in/of loop, this affects a break also.
+                if (context.type === "ForInStatement" ||
+                    context.type === "ForOfStatement"
+                ) {
+                    context.brokenForkContext.add(forkContext.head);
+                }
+            } else {
+                context.continueForkContext.add(forkContext.head);
+            }
+        }
+        forkContext.replaceHead(forkContext.makeUnreachable(-1, -1));
+    }
+
+    /**
+     * Makes a path for a `return` statement.
+     *
+     * It registers the head segment to a context of `return`.
+     * It makes new unreachable segment, then it set the head with the segment.
+     * @returns {void}
+     */
+    makeReturn() {
+        const forkContext = this.forkContext;
+
+        if (forkContext.reachable) {
+            getReturnContext(this).returnedForkContext.add(forkContext.head);
+            forkContext.replaceHead(forkContext.makeUnreachable(-1, -1));
+        }
+    }
+
+    /**
+     * Makes a path for a `throw` statement.
+     *
+     * It registers the head segment to a context of `throw`.
+     * It makes new unreachable segment, then it set the head with the segment.
+     * @returns {void}
+     */
+    makeThrow() {
+        const forkContext = this.forkContext;
+
+        if (forkContext.reachable) {
+            getThrowContext(this).thrownForkContext.add(forkContext.head);
+            forkContext.replaceHead(forkContext.makeUnreachable(-1, -1));
+        }
+    }
+
+    /**
+     * Makes the final path.
+     * @returns {void}
+     */
+    makeFinal() {
+        const segments = this.currentSegments;
+
+        if (segments.length > 0 && segments[0].reachable) {
+            this.returnedForkContext.add(segments);
+        }
+    }
+}
+
+module.exports = CodePathState;
Index: frontend/node_modules/eslint/lib/linter/code-path-analysis/code-path.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/code-path-analysis/code-path.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/code-path-analysis/code-path.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,342 @@
+/**
+ * @fileoverview A class of the code path.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const CodePathState = require("./code-path-state");
+const IdGenerator = require("./id-generator");
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * A code path.
+ */
+class CodePath {
+
+    /**
+     * Creates a new instance.
+     * @param {Object} options Options for the function (see below).
+     * @param {string} options.id An identifier.
+     * @param {string} options.origin The type of code path origin.
+     * @param {CodePath|null} options.upper The code path of the upper function scope.
+     * @param {Function} options.onLooped A callback function to notify looping.
+     */
+    constructor({ id, origin, upper, onLooped }) {
+
+        /**
+         * The identifier of this code path.
+         * Rules use it to store additional information of each rule.
+         * @type {string}
+         */
+        this.id = id;
+
+        /**
+         * The reason that this code path was started. May be "program",
+         * "function", "class-field-initializer", or "class-static-block".
+         * @type {string}
+         */
+        this.origin = origin;
+
+        /**
+         * The code path of the upper function scope.
+         * @type {CodePath|null}
+         */
+        this.upper = upper;
+
+        /**
+         * The code paths of nested function scopes.
+         * @type {CodePath[]}
+         */
+        this.childCodePaths = [];
+
+        // Initializes internal state.
+        Object.defineProperty(
+            this,
+            "internal",
+            { value: new CodePathState(new IdGenerator(`${id}_`), onLooped) }
+        );
+
+        // Adds this into `childCodePaths` of `upper`.
+        if (upper) {
+            upper.childCodePaths.push(this);
+        }
+    }
+
+    /**
+     * Gets the state of a given code path.
+     * @param {CodePath} codePath A code path to get.
+     * @returns {CodePathState} The state of the code path.
+     */
+    static getState(codePath) {
+        return codePath.internal;
+    }
+
+    /**
+     * The initial code path segment. This is the segment that is at the head
+     * of the code path.
+     * This is a passthrough to the underlying `CodePathState`.
+     * @type {CodePathSegment}
+     */
+    get initialSegment() {
+        return this.internal.initialSegment;
+    }
+
+    /**
+     * Final code path segments. These are the terminal (tail) segments in the
+     * code path, which is the combination of `returnedSegments` and `thrownSegments`.
+     * All segments in this array are reachable.
+     * This is a passthrough to the underlying `CodePathState`.
+     * @type {CodePathSegment[]}
+     */
+    get finalSegments() {
+        return this.internal.finalSegments;
+    }
+
+    /**
+     * Final code path segments that represent normal completion of the code path.
+     * For functions, this means both explicit `return` statements and implicit returns,
+     * such as the last reachable segment in a function that does not have an
+     * explicit `return` as this implicitly returns `undefined`. For scripts,
+     * modules, class field initializers, and class static blocks, this means
+     * all lines of code have been executed.
+     * These segments are also present in `finalSegments`.
+     * This is a passthrough to the underlying `CodePathState`.
+     * @type {CodePathSegment[]}
+     */
+    get returnedSegments() {
+        return this.internal.returnedForkContext;
+    }
+
+    /**
+     * Final code path segments that represent `throw` statements.
+     * This is a passthrough to the underlying `CodePathState`.
+     * These segments are also present in `finalSegments`.
+     * @type {CodePathSegment[]}
+     */
+    get thrownSegments() {
+        return this.internal.thrownForkContext;
+    }
+
+    /**
+     * Tracks the traversal of the code path through each segment. This array
+     * starts empty and segments are added or removed as the code path is
+     * traversed. This array always ends up empty at the end of a code path
+     * traversal. The `CodePathState` uses this to track its progress through
+     * the code path.
+     * This is a passthrough to the underlying `CodePathState`.
+     * @type {CodePathSegment[]}
+     * @deprecated
+     */
+    get currentSegments() {
+        return this.internal.currentSegments;
+    }
+
+    /**
+     * Traverses all segments in this code path.
+     *
+     *     codePath.traverseSegments((segment, controller) => {
+     *         // do something.
+     *     });
+     *
+     * This method enumerates segments in order from the head.
+     *
+     * The `controller` argument has two methods:
+     *
+     * - `skip()` - skips the following segments in this branch
+     * - `break()` - skips all following segments in the traversal
+     *
+     * A note on the parameters: the `options` argument is optional. This means
+     * the first argument might be an options object or the callback function.
+     * @param {Object} [optionsOrCallback] Optional first and last segments to traverse.
+     * @param {CodePathSegment} [optionsOrCallback.first] The first segment to traverse.
+     * @param {CodePathSegment} [optionsOrCallback.last] The last segment to traverse.
+     * @param {Function} callback A callback function.
+     * @returns {void}
+     */
+    traverseSegments(optionsOrCallback, callback) {
+
+        // normalize the arguments into a callback and options
+        let resolvedOptions;
+        let resolvedCallback;
+
+        if (typeof optionsOrCallback === "function") {
+            resolvedCallback = optionsOrCallback;
+            resolvedOptions = {};
+        } else {
+            resolvedOptions = optionsOrCallback || {};
+            resolvedCallback = callback;
+        }
+
+        // determine where to start traversing from based on the options
+        const startSegment = resolvedOptions.first || this.internal.initialSegment;
+        const lastSegment = resolvedOptions.last;
+
+        // set up initial location information
+        let record = null;
+        let index = 0;
+        let end = 0;
+        let segment = null;
+
+        // segments that have already been visited during traversal
+        const visited = new Set();
+
+        // tracks the traversal steps
+        const stack = [[startSegment, 0]];
+
+        // tracks the last skipped segment during traversal
+        let skippedSegment = null;
+
+        // indicates if we exited early from the traversal
+        let broken = false;
+
+        /**
+         * Maintains traversal state.
+         */
+        const controller = {
+
+            /**
+             * Skip the following segments in this branch.
+             * @returns {void}
+             */
+            skip() {
+                if (stack.length <= 1) {
+                    broken = true;
+                } else {
+                    skippedSegment = stack[stack.length - 2][0];
+                }
+            },
+
+            /**
+             * Stop traversal completely - do not traverse to any
+             * other segments.
+             * @returns {void}
+             */
+            break() {
+                broken = true;
+            }
+        };
+
+        /**
+         * Checks if a given previous segment has been visited.
+         * @param {CodePathSegment} prevSegment A previous segment to check.
+         * @returns {boolean} `true` if the segment has been visited.
+         */
+        function isVisited(prevSegment) {
+            return (
+                visited.has(prevSegment) ||
+                segment.isLoopedPrevSegment(prevSegment)
+            );
+        }
+
+        // the traversal
+        while (stack.length > 0) {
+
+            /*
+             * This isn't a pure stack. We use the top record all the time
+             * but don't always pop it off. The record is popped only if
+             * one of the following is true:
+             *
+             * 1) We have already visited the segment.
+             * 2) We have not visited *all* of the previous segments.
+             * 3) We have traversed past the available next segments.
+             *
+             * Otherwise, we just read the value and sometimes modify the
+             * record as we traverse.
+             */
+            record = stack[stack.length - 1];
+            segment = record[0];
+            index = record[1];
+
+            if (index === 0) {
+
+                // Skip if this segment has been visited already.
+                if (visited.has(segment)) {
+                    stack.pop();
+                    continue;
+                }
+
+                // Skip if all previous segments have not been visited.
+                if (segment !== startSegment &&
+                    segment.prevSegments.length > 0 &&
+                    !segment.prevSegments.every(isVisited)
+                ) {
+                    stack.pop();
+                    continue;
+                }
+
+                // Reset the skipping flag if all branches have been skipped.
+                if (skippedSegment && segment.prevSegments.includes(skippedSegment)) {
+                    skippedSegment = null;
+                }
+                visited.add(segment);
+
+                /*
+                 * If the most recent segment hasn't been skipped, then we call
+                 * the callback, passing in the segment and the controller.
+                 */
+                if (!skippedSegment) {
+                    resolvedCallback.call(this, segment, controller);
+
+                    // exit if we're at the last segment
+                    if (segment === lastSegment) {
+                        controller.skip();
+                    }
+
+                    /*
+                     * If the previous statement was executed, or if the callback
+                     * called a method on the controller, we might need to exit the
+                     * loop, so check for that and break accordingly.
+                     */
+                    if (broken) {
+                        break;
+                    }
+                }
+            }
+
+            // Update the stack.
+            end = segment.nextSegments.length - 1;
+            if (index < end) {
+
+                /*
+                 * If we haven't yet visited all of the next segments, update
+                 * the current top record on the stack to the next index to visit
+                 * and then push a record for the current segment on top.
+                 *
+                 * Setting the current top record's index lets us know how many
+                 * times we've been here and ensures that the segment won't be
+                 * reprocessed (because we only process segments with an index
+                 * of 0).
+                 */
+                record[1] += 1;
+                stack.push([segment.nextSegments[index], 0]);
+            } else if (index === end) {
+
+                /*
+                 * If we are at the last next segment, then reset the top record
+                 * in the stack to next segment and set its index to 0 so it will
+                 * be processed next.
+                 */
+                record[0] = segment.nextSegments[index];
+                record[1] = 0;
+            } else {
+
+                /*
+                 * If index > end, that means we have no more segments that need
+                 * processing. So, we pop that record off of the stack in order to
+                 * continue traversing at the next level up.
+                 */
+                stack.pop();
+            }
+        }
+    }
+}
+
+module.exports = CodePath;
Index: frontend/node_modules/eslint/lib/linter/code-path-analysis/debug-helpers.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/code-path-analysis/debug-helpers.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/code-path-analysis/debug-helpers.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,203 @@
+/**
+ * @fileoverview Helpers to debug for code path analysis.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const debug = require("debug")("eslint:code-path");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Gets id of a given segment.
+ * @param {CodePathSegment} segment A segment to get.
+ * @returns {string} Id of the segment.
+ */
+/* c8 ignore next */
+function getId(segment) { // eslint-disable-line jsdoc/require-jsdoc -- Ignoring
+    return segment.id + (segment.reachable ? "" : "!");
+}
+
+/**
+ * Get string for the given node and operation.
+ * @param {ASTNode} node The node to convert.
+ * @param {"enter" | "exit" | undefined} label The operation label.
+ * @returns {string} The string representation.
+ */
+function nodeToString(node, label) {
+    const suffix = label ? `:${label}` : "";
+
+    switch (node.type) {
+        case "Identifier": return `${node.type}${suffix} (${node.name})`;
+        case "Literal": return `${node.type}${suffix} (${node.value})`;
+        default: return `${node.type}${suffix}`;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = {
+
+    /**
+     * A flag that debug dumping is enabled or not.
+     * @type {boolean}
+     */
+    enabled: debug.enabled,
+
+    /**
+     * Dumps given objects.
+     * @param {...any} args objects to dump.
+     * @returns {void}
+     */
+    dump: debug,
+
+    /**
+     * Dumps the current analyzing state.
+     * @param {ASTNode} node A node to dump.
+     * @param {CodePathState} state A state to dump.
+     * @param {boolean} leaving A flag whether or not it's leaving
+     * @returns {void}
+     */
+    dumpState: !debug.enabled ? debug : /* c8 ignore next */ function(node, state, leaving) {
+        for (let i = 0; i < state.currentSegments.length; ++i) {
+            const segInternal = state.currentSegments[i].internal;
+
+            if (leaving) {
+                const last = segInternal.nodes.length - 1;
+
+                if (last >= 0 && segInternal.nodes[last] === nodeToString(node, "enter")) {
+                    segInternal.nodes[last] = nodeToString(node, void 0);
+                } else {
+                    segInternal.nodes.push(nodeToString(node, "exit"));
+                }
+            } else {
+                segInternal.nodes.push(nodeToString(node, "enter"));
+            }
+        }
+
+        debug([
+            `${state.currentSegments.map(getId).join(",")})`,
+            `${node.type}${leaving ? ":exit" : ""}`
+        ].join(" "));
+    },
+
+    /**
+     * Dumps a DOT code of a given code path.
+     * The DOT code can be visualized with Graphvis.
+     * @param {CodePath} codePath A code path to dump.
+     * @returns {void}
+     * @see http://www.graphviz.org
+     * @see http://www.webgraphviz.com
+     */
+    dumpDot: !debug.enabled ? debug : /* c8 ignore next */ function(codePath) {
+        let text =
+            "\n" +
+            "digraph {\n" +
+            "node[shape=box,style=\"rounded,filled\",fillcolor=white];\n" +
+            "initial[label=\"\",shape=circle,style=filled,fillcolor=black,width=0.25,height=0.25];\n";
+
+        if (codePath.returnedSegments.length > 0) {
+            text += "final[label=\"\",shape=doublecircle,style=filled,fillcolor=black,width=0.25,height=0.25];\n";
+        }
+        if (codePath.thrownSegments.length > 0) {
+            text += "thrown[label=\"✘\",shape=circle,width=0.3,height=0.3,fixedsize=true];\n";
+        }
+
+        const traceMap = Object.create(null);
+        const arrows = this.makeDotArrows(codePath, traceMap);
+
+        for (const id in traceMap) { // eslint-disable-line guard-for-in -- Want ability to traverse prototype
+            const segment = traceMap[id];
+
+            text += `${id}[`;
+
+            if (segment.reachable) {
+                text += "label=\"";
+            } else {
+                text += "style=\"rounded,dashed,filled\",fillcolor=\"#FF9800\",label=\"<<unreachable>>\\n";
+            }
+
+            if (segment.internal.nodes.length > 0) {
+                text += segment.internal.nodes.join("\\n");
+            } else {
+                text += "????";
+            }
+
+            text += "\"];\n";
+        }
+
+        text += `${arrows}\n`;
+        text += "}";
+        debug("DOT", text);
+    },
+
+    /**
+     * Makes a DOT code of a given code path.
+     * The DOT code can be visualized with Graphvis.
+     * @param {CodePath} codePath A code path to make DOT.
+     * @param {Object} traceMap Optional. A map to check whether or not segments had been done.
+     * @returns {string} A DOT code of the code path.
+     */
+    makeDotArrows(codePath, traceMap) {
+        const stack = [[codePath.initialSegment, 0]];
+        const done = traceMap || Object.create(null);
+        let lastId = codePath.initialSegment.id;
+        let text = `initial->${codePath.initialSegment.id}`;
+
+        while (stack.length > 0) {
+            const item = stack.pop();
+            const segment = item[0];
+            const index = item[1];
+
+            if (done[segment.id] && index === 0) {
+                continue;
+            }
+            done[segment.id] = segment;
+
+            const nextSegment = segment.allNextSegments[index];
+
+            if (!nextSegment) {
+                continue;
+            }
+
+            if (lastId === segment.id) {
+                text += `->${nextSegment.id}`;
+            } else {
+                text += `;\n${segment.id}->${nextSegment.id}`;
+            }
+            lastId = nextSegment.id;
+
+            stack.unshift([segment, 1 + index]);
+            stack.push([nextSegment, 0]);
+        }
+
+        codePath.returnedSegments.forEach(finalSegment => {
+            if (lastId === finalSegment.id) {
+                text += "->final";
+            } else {
+                text += `;\n${finalSegment.id}->final`;
+            }
+            lastId = null;
+        });
+
+        codePath.thrownSegments.forEach(finalSegment => {
+            if (lastId === finalSegment.id) {
+                text += "->thrown";
+            } else {
+                text += `;\n${finalSegment.id}->thrown`;
+            }
+            lastId = null;
+        });
+
+        return `${text};`;
+    }
+};
Index: frontend/node_modules/eslint/lib/linter/code-path-analysis/fork-context.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/code-path-analysis/fork-context.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/code-path-analysis/fork-context.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,349 @@
+/**
+ * @fileoverview A class to operate forking.
+ *
+ * This is state of forking.
+ * This has a fork list and manages it.
+ *
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const assert = require("assert"),
+    CodePathSegment = require("./code-path-segment");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines whether or not a given segment is reachable.
+ * @param {CodePathSegment} segment The segment to check.
+ * @returns {boolean} `true` if the segment is reachable.
+ */
+function isReachable(segment) {
+    return segment.reachable;
+}
+
+/**
+ * Creates a new segment for each fork in the given context and appends it
+ * to the end of the specified range of segments. Ultimately, this ends up calling
+ * `new CodePathSegment()` for each of the forks using the `create` argument
+ * as a wrapper around special behavior.
+ *
+ * The `startIndex` and `endIndex` arguments specify a range of segments in
+ * `context` that should become `allPrevSegments` for the newly created
+ * `CodePathSegment` objects.
+ *
+ * When `context.segmentsList` is `[[a, b], [c, d], [e, f]]`, `begin` is `0`, and
+ * `end` is `-1`, this creates two new segments, `[g, h]`. This `g` is appended to
+ * the end of the path from `a`, `c`, and `e`. This `h` is appended to the end of
+ * `b`, `d`, and `f`.
+ * @param {ForkContext} context An instance from which the previous segments
+ *      will be obtained.
+ * @param {number} startIndex The index of the first segment in the context
+ *      that should be specified as previous segments for the newly created segments.
+ * @param {number} endIndex The index of the last segment in the context
+ *      that should be specified as previous segments for the newly created segments.
+ * @param {Function} create A function that creates new `CodePathSegment`
+ *      instances in a particular way. See the `CodePathSegment.new*` methods.
+ * @returns {Array<CodePathSegment>} An array of the newly-created segments.
+ */
+function createSegments(context, startIndex, endIndex, create) {
+
+    /** @type {Array<Array<CodePathSegment>>} */
+    const list = context.segmentsList;
+
+    /*
+     * Both `startIndex` and `endIndex` work the same way: if the number is zero
+     * or more, then the number is used as-is. If the number is negative,
+     * then that number is added to the length of the segments list to
+     * determine the index to use. That means -1 for either argument
+     * is the last element, -2 is the second to last, and so on.
+     *
+     * So if `startIndex` is 0, `endIndex` is -1, and `list.length` is 3, the
+     * effective `startIndex` is 0 and the effective `endIndex` is 2, so this function
+     * will include items at indices 0, 1, and 2.
+     *
+     * Therefore, if `startIndex` is -1 and `endIndex` is -1, that means we'll only
+     * be using the last segment in `list`.
+     */
+    const normalizedBegin = startIndex >= 0 ? startIndex : list.length + startIndex;
+    const normalizedEnd = endIndex >= 0 ? endIndex : list.length + endIndex;
+
+    /** @type {Array<CodePathSegment>} */
+    const segments = [];
+
+    for (let i = 0; i < context.count; ++i) {
+
+        // this is passed into `new CodePathSegment` to add to code path.
+        const allPrevSegments = [];
+
+        for (let j = normalizedBegin; j <= normalizedEnd; ++j) {
+            allPrevSegments.push(list[j][i]);
+        }
+
+        // note: `create` is just a wrapper that augments `new CodePathSegment`.
+        segments.push(create(context.idGenerator.next(), allPrevSegments));
+    }
+
+    return segments;
+}
+
+/**
+ * Inside of a `finally` block we end up with two parallel paths. If the code path
+ * exits by a control statement (such as `break` or `continue`) from the `finally`
+ * block, then we need to merge the remaining parallel paths back into one.
+ * @param {ForkContext} context The fork context to work on.
+ * @param {Array<CodePathSegment>} segments Segments to merge.
+ * @returns {Array<CodePathSegment>} The merged segments.
+ */
+function mergeExtraSegments(context, segments) {
+    let currentSegments = segments;
+
+    /*
+     * We need to ensure that the array returned from this function contains no more
+     * than the number of segments that the context allows. `context.count` indicates
+     * how many items should be in the returned array to ensure that the new segment
+     * entries will line up with the already existing segment entries.
+     */
+    while (currentSegments.length > context.count) {
+        const merged = [];
+
+        /*
+         * Because `context.count` is a factor of 2 inside of a `finally` block,
+         * we can divide the segment count by 2 to merge the paths together.
+         * This loops through each segment in the list and creates a new `CodePathSegment`
+         * that has the segment and the segment two slots away as previous segments.
+         *
+         * If `currentSegments` is [a,b,c,d], this will create new segments e and f, such
+         * that:
+         *
+         * When `i` is 0:
+         * a->e
+         * c->e
+         *
+         * When `i` is 1:
+         * b->f
+         * d->f
+         */
+        for (let i = 0, length = Math.floor(currentSegments.length / 2); i < length; ++i) {
+            merged.push(CodePathSegment.newNext(
+                context.idGenerator.next(),
+                [currentSegments[i], currentSegments[i + length]]
+            ));
+        }
+
+        /*
+         * Go through the loop condition one more time to see if we have the
+         * number of segments for the context. If not, we'll keep merging paths
+         * of the merged segments until we get there.
+         */
+        currentSegments = merged;
+    }
+
+    return currentSegments;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * Manages the forking of code paths.
+ */
+class ForkContext {
+
+    /**
+     * Creates a new instance.
+     * @param {IdGenerator} idGenerator An identifier generator for segments.
+     * @param {ForkContext|null} upper The preceding fork context.
+     * @param {number} count The number of parallel segments in each element
+     *      of `segmentsList`.
+     */
+    constructor(idGenerator, upper, count) {
+
+        /**
+         * The ID generator that will generate segment IDs for any new
+         * segments that are created.
+         * @type {IdGenerator}
+         */
+        this.idGenerator = idGenerator;
+
+        /**
+         * The preceding fork context.
+         * @type {ForkContext|null}
+         */
+        this.upper = upper;
+
+        /**
+         * The number of elements in each element of `segmentsList`. In most
+         * cases, this is 1 but can be 2 when there is a `finally` present,
+         * which forks the code path outside of normal flow. In the case of nested
+         * `finally` blocks, this can be a multiple of 2.
+         * @type {number}
+         */
+        this.count = count;
+
+        /**
+         * The segments within this context. Each element in this array has
+         * `count` elements that represent one step in each fork. For example,
+         * when `segmentsList` is `[[a, b], [c, d], [e, f]]`, there is one path
+         * a->c->e and one path b->d->f, and `count` is 2 because each element
+         * is an array with two elements.
+         * @type {Array<Array<CodePathSegment>>}
+         */
+        this.segmentsList = [];
+    }
+
+    /**
+     * The segments that begin this fork context.
+     * @type {Array<CodePathSegment>}
+     */
+    get head() {
+        const list = this.segmentsList;
+
+        return list.length === 0 ? [] : list[list.length - 1];
+    }
+
+    /**
+     * Indicates if the context contains no segments.
+     * @type {boolean}
+     */
+    get empty() {
+        return this.segmentsList.length === 0;
+    }
+
+    /**
+     * Indicates if there are any segments that are reachable.
+     * @type {boolean}
+     */
+    get reachable() {
+        const segments = this.head;
+
+        return segments.length > 0 && segments.some(isReachable);
+    }
+
+    /**
+     * Creates new segments in this context and appends them to the end of the
+     * already existing `CodePathSegment`s specified by `startIndex` and
+     * `endIndex`.
+     * @param {number} startIndex The index of the first segment in the context
+     *      that should be specified as previous segments for the newly created segments.
+     * @param {number} endIndex The index of the last segment in the context
+     *      that should be specified as previous segments for the newly created segments.
+     * @returns {Array<CodePathSegment>} An array of the newly created segments.
+     */
+    makeNext(startIndex, endIndex) {
+        return createSegments(this, startIndex, endIndex, CodePathSegment.newNext);
+    }
+
+    /**
+     * Creates new unreachable segments in this context and appends them to the end of the
+     * already existing `CodePathSegment`s specified by `startIndex` and
+     * `endIndex`.
+     * @param {number} startIndex The index of the first segment in the context
+     *      that should be specified as previous segments for the newly created segments.
+     * @param {number} endIndex The index of the last segment in the context
+     *      that should be specified as previous segments for the newly created segments.
+     * @returns {Array<CodePathSegment>} An array of the newly created segments.
+     */
+    makeUnreachable(startIndex, endIndex) {
+        return createSegments(this, startIndex, endIndex, CodePathSegment.newUnreachable);
+    }
+
+    /**
+     * Creates new segments in this context and does not append them to the end
+     *  of the already existing `CodePathSegment`s specified by `startIndex` and
+     * `endIndex`. The `startIndex` and `endIndex` are only used to determine if
+     * the new segments should be reachable. If any of the segments in this range
+     * are reachable then the new segments are also reachable; otherwise, the new
+     * segments are unreachable.
+     * @param {number} startIndex The index of the first segment in the context
+     *      that should be considered for reachability.
+     * @param {number} endIndex The index of the last segment in the context
+     *      that should be considered for reachability.
+     * @returns {Array<CodePathSegment>} An array of the newly created segments.
+     */
+    makeDisconnected(startIndex, endIndex) {
+        return createSegments(this, startIndex, endIndex, CodePathSegment.newDisconnected);
+    }
+
+    /**
+     * Adds segments to the head of this context.
+     * @param {Array<CodePathSegment>} segments The segments to add.
+     * @returns {void}
+     */
+    add(segments) {
+        assert(segments.length >= this.count, `${segments.length} >= ${this.count}`);
+        this.segmentsList.push(mergeExtraSegments(this, segments));
+    }
+
+    /**
+     * Replaces the head segments with the given segments.
+     * The current head segments are removed.
+     * @param {Array<CodePathSegment>} replacementHeadSegments The new head segments.
+     * @returns {void}
+     */
+    replaceHead(replacementHeadSegments) {
+        assert(
+            replacementHeadSegments.length >= this.count,
+            `${replacementHeadSegments.length} >= ${this.count}`
+        );
+        this.segmentsList.splice(-1, 1, mergeExtraSegments(this, replacementHeadSegments));
+    }
+
+    /**
+     * Adds all segments of a given fork context into this context.
+     * @param {ForkContext} otherForkContext The fork context to add from.
+     * @returns {void}
+     */
+    addAll(otherForkContext) {
+        assert(otherForkContext.count === this.count);
+        this.segmentsList.push(...otherForkContext.segmentsList);
+    }
+
+    /**
+     * Clears all segments in this context.
+     * @returns {void}
+     */
+    clear() {
+        this.segmentsList = [];
+    }
+
+    /**
+     * Creates a new root context, meaning that there are no parent
+     * fork contexts.
+     * @param {IdGenerator} idGenerator An identifier generator for segments.
+     * @returns {ForkContext} New fork context.
+     */
+    static newRoot(idGenerator) {
+        const context = new ForkContext(idGenerator, null, 1);
+
+        context.add([CodePathSegment.newRoot(idGenerator.next())]);
+
+        return context;
+    }
+
+    /**
+     * Creates an empty fork context preceded by a given context.
+     * @param {ForkContext} parentContext The parent fork context.
+     * @param {boolean} shouldForkLeavingPath Indicates that we are inside of
+     *      a `finally` block and should therefore fork the path that leaves
+     *      `finally`.
+     * @returns {ForkContext} New fork context.
+     */
+    static newEmpty(parentContext, shouldForkLeavingPath) {
+        return new ForkContext(
+            parentContext.idGenerator,
+            parentContext,
+            (shouldForkLeavingPath ? 2 : 1) * parentContext.count
+        );
+    }
+}
+
+module.exports = ForkContext;
Index: frontend/node_modules/eslint/lib/linter/code-path-analysis/id-generator.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/code-path-analysis/id-generator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/code-path-analysis/id-generator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,45 @@
+/**
+ * @fileoverview A class of identifiers generator for code path segments.
+ *
+ * Each rule uses the identifier of code path segments to store additional
+ * information of the code path.
+ *
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * A generator for unique ids.
+ */
+class IdGenerator {
+
+    /**
+     * @param {string} prefix Optional. A prefix of generated ids.
+     */
+    constructor(prefix) {
+        this.prefix = String(prefix);
+        this.n = 0;
+    }
+
+    /**
+     * Generates id.
+     * @returns {string} A generated id.
+     */
+    next() {
+        this.n = 1 + this.n | 0;
+
+        /* c8 ignore start */
+        if (this.n < 0) {
+            this.n = 1;
+        }/* c8 ignore stop */
+
+        return this.prefix + this.n;
+    }
+}
+
+module.exports = IdGenerator;
Index: frontend/node_modules/eslint/lib/linter/config-comment-parser.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/config-comment-parser.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/config-comment-parser.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,185 @@
+/**
+ * @fileoverview Config Comment Parser
+ * @author Nicholas C. Zakas
+ */
+
+/* eslint class-methods-use-this: off -- Methods desired on instance */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const levn = require("levn"),
+    {
+        Legacy: {
+            ConfigOps
+        }
+    } = require("@eslint/eslintrc/universal"),
+    {
+        directivesPattern
+    } = require("../shared/directives");
+
+const debug = require("debug")("eslint:config-comment-parser");
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/** @typedef {import("../shared/types").LintMessage} LintMessage */
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * Object to parse ESLint configuration comments inside JavaScript files.
+ * @name ConfigCommentParser
+ */
+module.exports = class ConfigCommentParser {
+
+    /**
+     * Parses a list of "name:string_value" or/and "name" options divided by comma or
+     * whitespace. Used for "global" and "exported" comments.
+     * @param {string} string The string to parse.
+     * @param {Comment} comment The comment node which has the string.
+     * @returns {Object} Result map object of names and string values, or null values if no value was provided
+     */
+    parseStringConfig(string, comment) {
+        debug("Parsing String config");
+
+        const items = {};
+
+        // Collapse whitespace around `:` and `,` to make parsing easier
+        const trimmedString = string.replace(/\s*([:,])\s*/gu, "$1");
+
+        trimmedString.split(/\s|,+/u).forEach(name => {
+            if (!name) {
+                return;
+            }
+
+            // value defaults to null (if not provided), e.g: "foo" => ["foo", null]
+            const [key, value = null] = name.split(":");
+
+            items[key] = { value, comment };
+        });
+        return items;
+    }
+
+    /**
+     * Parses a JSON-like config.
+     * @param {string} string The string to parse.
+     * @param {Object} location Start line and column of comments for potential error message.
+     * @returns {({success: true, config: Object}|{success: false, error: LintMessage})} Result map object
+     */
+    parseJsonConfig(string, location) {
+        debug("Parsing JSON config");
+
+        let items = {};
+
+        // Parses a JSON-like comment by the same way as parsing CLI option.
+        try {
+            items = levn.parse("Object", string) || {};
+
+            // Some tests say that it should ignore invalid comments such as `/*eslint no-alert:abc*/`.
+            // Also, commaless notations have invalid severity:
+            //     "no-alert: 2 no-console: 2" --> {"no-alert": "2 no-console: 2"}
+            // Should ignore that case as well.
+            if (ConfigOps.isEverySeverityValid(items)) {
+                return {
+                    success: true,
+                    config: items
+                };
+            }
+        } catch {
+
+            debug("Levn parsing failed; falling back to manual parsing.");
+
+            // ignore to parse the string by a fallback.
+        }
+
+        /*
+         * Optionator cannot parse commaless notations.
+         * But we are supporting that. So this is a fallback for that.
+         */
+        items = {};
+        const normalizedString = string.replace(/([-a-zA-Z0-9/]+):/gu, "\"$1\":").replace(/(\]|[0-9])\s+(?=")/u, "$1,");
+
+        try {
+            items = JSON.parse(`{${normalizedString}}`);
+        } catch (ex) {
+            debug("Manual parsing failed.");
+
+            return {
+                success: false,
+                error: {
+                    ruleId: null,
+                    fatal: true,
+                    severity: 2,
+                    message: `Failed to parse JSON from '${normalizedString}': ${ex.message}`,
+                    line: location.start.line,
+                    column: location.start.column + 1,
+                    nodeType: null
+                }
+            };
+
+        }
+
+        return {
+            success: true,
+            config: items
+        };
+    }
+
+    /**
+     * Parses a config of values separated by comma.
+     * @param {string} string The string to parse.
+     * @returns {Object} Result map of values and true values
+     */
+    parseListConfig(string) {
+        debug("Parsing list config");
+
+        const items = {};
+
+        string.split(",").forEach(name => {
+            const trimmedName = name.trim().replace(/^(?<quote>['"]?)(?<ruleId>.*)\k<quote>$/us, "$<ruleId>");
+
+            if (trimmedName) {
+                items[trimmedName] = true;
+            }
+        });
+        return items;
+    }
+
+    /**
+     * Extract the directive and the justification from a given directive comment and trim them.
+     * @param {string} value The comment text to extract.
+     * @returns {{directivePart: string, justificationPart: string}} The extracted directive and justification.
+     */
+    extractDirectiveComment(value) {
+        const match = /\s-{2,}\s/u.exec(value);
+
+        if (!match) {
+            return { directivePart: value.trim(), justificationPart: "" };
+        }
+
+        const directive = value.slice(0, match.index).trim();
+        const justification = value.slice(match.index + match[0].length).trim();
+
+        return { directivePart: directive, justificationPart: justification };
+    }
+
+    /**
+     * Parses a directive comment into directive text and value.
+     * @param {Comment} comment The comment node with the directive to be parsed.
+     * @returns {{directiveText: string, directiveValue: string}} The directive text and value.
+     */
+    parseDirective(comment) {
+        const { directivePart } = this.extractDirectiveComment(comment.value);
+        const match = directivesPattern.exec(directivePart);
+        const directiveText = match[1];
+        const directiveValue = directivePart.slice(match.index + directiveText.length);
+
+        return { directiveText, directiveValue };
+    }
+};
Index: frontend/node_modules/eslint/lib/linter/index.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,13 @@
+"use strict";
+
+const { Linter } = require("./linter");
+const interpolate = require("./interpolate");
+const SourceCodeFixer = require("./source-code-fixer");
+
+module.exports = {
+    Linter,
+
+    // For testers.
+    SourceCodeFixer,
+    interpolate
+};
Index: frontend/node_modules/eslint/lib/linter/interpolate.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/interpolate.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/interpolate.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,28 @@
+/**
+ * @fileoverview Interpolate keys from an object into a string with {{ }} markers.
+ * @author Jed Fox
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = (text, data) => {
+    if (!data) {
+        return text;
+    }
+
+    // Substitution content for any {{ }} markers.
+    return text.replace(/\{\{([^{}]+?)\}\}/gu, (fullMatch, termWithWhitespace) => {
+        const term = termWithWhitespace.trim();
+
+        if (term in data) {
+            return data[term];
+        }
+
+        // Preserve old behavior: If parameter name not provided, don't replace it.
+        return fullMatch;
+    });
+};
Index: frontend/node_modules/eslint/lib/linter/linter.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/linter.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/linter.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,2119 @@
+/**
+ * @fileoverview Main Linter Class
+ * @author Gyandeep Singh
+ * @author aladdin-add
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const
+    path = require("path"),
+    eslintScope = require("eslint-scope"),
+    evk = require("eslint-visitor-keys"),
+    espree = require("espree"),
+    merge = require("lodash.merge"),
+    pkg = require("../../package.json"),
+    astUtils = require("../shared/ast-utils"),
+    {
+        directivesPattern
+    } = require("../shared/directives"),
+    {
+        Legacy: {
+            ConfigOps,
+            ConfigValidator,
+            environments: BuiltInEnvironments
+        }
+    } = require("@eslint/eslintrc/universal"),
+    Traverser = require("../shared/traverser"),
+    { SourceCode } = require("../source-code"),
+    CodePathAnalyzer = require("./code-path-analysis/code-path-analyzer"),
+    applyDisableDirectives = require("./apply-disable-directives"),
+    ConfigCommentParser = require("./config-comment-parser"),
+    NodeEventGenerator = require("./node-event-generator"),
+    createReportTranslator = require("./report-translator"),
+    Rules = require("./rules"),
+    createEmitter = require("./safe-emitter"),
+    SourceCodeFixer = require("./source-code-fixer"),
+    timing = require("./timing"),
+    ruleReplacements = require("../../conf/replacements.json");
+const { getRuleFromConfig } = require("../config/flat-config-helpers");
+const { FlatConfigArray } = require("../config/flat-config-array");
+const { RuleValidator } = require("../config/rule-validator");
+const { assertIsRuleOptions, assertIsRuleSeverity } = require("../config/flat-config-schema");
+const { normalizeSeverityToString } = require("../shared/severity");
+const debug = require("debug")("eslint:linter");
+const MAX_AUTOFIX_PASSES = 10;
+const DEFAULT_PARSER_NAME = "espree";
+const DEFAULT_ECMA_VERSION = 5;
+const commentParser = new ConfigCommentParser();
+const DEFAULT_ERROR_LOC = { start: { line: 1, column: 0 }, end: { line: 1, column: 1 } };
+const parserSymbol = Symbol.for("eslint.RuleTester.parser");
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/** @typedef {InstanceType<import("../cli-engine/config-array").ConfigArray>} ConfigArray */
+/** @typedef {InstanceType<import("../cli-engine/config-array").ExtractedConfig>} ExtractedConfig */
+/** @typedef {import("../shared/types").ConfigData} ConfigData */
+/** @typedef {import("../shared/types").Environment} Environment */
+/** @typedef {import("../shared/types").GlobalConf} GlobalConf */
+/** @typedef {import("../shared/types").LintMessage} LintMessage */
+/** @typedef {import("../shared/types").SuppressedLintMessage} SuppressedLintMessage */
+/** @typedef {import("../shared/types").ParserOptions} ParserOptions */
+/** @typedef {import("../shared/types").LanguageOptions} LanguageOptions */
+/** @typedef {import("../shared/types").Processor} Processor */
+/** @typedef {import("../shared/types").Rule} Rule */
+
+/* eslint-disable jsdoc/valid-types -- https://github.com/jsdoc-type-pratt-parser/jsdoc-type-pratt-parser/issues/4#issuecomment-778805577 */
+/**
+ * @template T
+ * @typedef {{ [P in keyof T]-?: T[P] }} Required
+ */
+/* eslint-enable jsdoc/valid-types -- https://github.com/jsdoc-type-pratt-parser/jsdoc-type-pratt-parser/issues/4#issuecomment-778805577 */
+
+/**
+ * @typedef {Object} DisableDirective
+ * @property {("disable"|"enable"|"disable-line"|"disable-next-line")} type Type of directive
+ * @property {number} line The line number
+ * @property {number} column The column number
+ * @property {(string|null)} ruleId The rule ID
+ * @property {string} justification The justification of directive
+ */
+
+/**
+ * The private data for `Linter` instance.
+ * @typedef {Object} LinterInternalSlots
+ * @property {ConfigArray|null} lastConfigArray The `ConfigArray` instance that the last `verify()` call used.
+ * @property {SourceCode|null} lastSourceCode The `SourceCode` instance that the last `verify()` call used.
+ * @property {SuppressedLintMessage[]} lastSuppressedMessages The `SuppressedLintMessage[]` instance that the last `verify()` call produced.
+ * @property {Map<string, Parser>} parserMap The loaded parsers.
+ * @property {Rules} ruleMap The loaded rules.
+ */
+
+/**
+ * @typedef {Object} VerifyOptions
+ * @property {boolean} [allowInlineConfig] Allow/disallow inline comments' ability
+ *      to change config once it is set. Defaults to true if not supplied.
+ *      Useful if you want to validate JS without comments overriding rules.
+ * @property {boolean} [disableFixes] if `true` then the linter doesn't make `fix`
+ *      properties into the lint result.
+ * @property {string} [filename] the filename of the source code.
+ * @property {boolean | "off" | "warn" | "error"} [reportUnusedDisableDirectives] Adds reported errors for
+ *      unused `eslint-disable` directives.
+ */
+
+/**
+ * @typedef {Object} ProcessorOptions
+ * @property {(filename:string, text:string) => boolean} [filterCodeBlock] the
+ *      predicate function that selects adopt code blocks.
+ * @property {Processor.postprocess} [postprocess] postprocessor for report
+ *      messages. If provided, this should accept an array of the message lists
+ *      for each code block returned from the preprocessor, apply a mapping to
+ *      the messages as appropriate, and return a one-dimensional array of
+ *      messages.
+ * @property {Processor.preprocess} [preprocess] preprocessor for source text.
+ *      If provided, this should accept a string of source text, and return an
+ *      array of code blocks to lint.
+ */
+
+/**
+ * @typedef {Object} FixOptions
+ * @property {boolean | ((message: LintMessage) => boolean)} [fix] Determines
+ *      whether fixes should be applied.
+ */
+
+/**
+ * @typedef {Object} InternalOptions
+ * @property {string | null} warnInlineConfig The config name what `noInlineConfig` setting came from. If `noInlineConfig` setting didn't exist, this is null. If this is a config name, then the linter warns directive comments.
+ * @property {"off" | "warn" | "error"} reportUnusedDisableDirectives (boolean values were normalized)
+ */
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines if a given object is Espree.
+ * @param {Object} parser The parser to check.
+ * @returns {boolean} True if the parser is Espree or false if not.
+ */
+function isEspree(parser) {
+    return !!(parser === espree || parser[parserSymbol] === espree);
+}
+
+/**
+ * Ensures that variables representing built-in properties of the Global Object,
+ * and any globals declared by special block comments, are present in the global
+ * scope.
+ * @param {Scope} globalScope The global scope.
+ * @param {Object} configGlobals The globals declared in configuration
+ * @param {{exportedVariables: Object, enabledGlobals: Object}} commentDirectives Directives from comment configuration
+ * @returns {void}
+ */
+function addDeclaredGlobals(globalScope, configGlobals, { exportedVariables, enabledGlobals }) {
+
+    // Define configured global variables.
+    for (const id of new Set([...Object.keys(configGlobals), ...Object.keys(enabledGlobals)])) {
+
+        /*
+         * `ConfigOps.normalizeConfigGlobal` will throw an error if a configured global value is invalid. However, these errors would
+         * typically be caught when validating a config anyway (validity for inline global comments is checked separately).
+         */
+        const configValue = configGlobals[id] === void 0 ? void 0 : ConfigOps.normalizeConfigGlobal(configGlobals[id]);
+        const commentValue = enabledGlobals[id] && enabledGlobals[id].value;
+        const value = commentValue || configValue;
+        const sourceComments = enabledGlobals[id] && enabledGlobals[id].comments;
+
+        if (value === "off") {
+            continue;
+        }
+
+        let variable = globalScope.set.get(id);
+
+        if (!variable) {
+            variable = new eslintScope.Variable(id, globalScope);
+
+            globalScope.variables.push(variable);
+            globalScope.set.set(id, variable);
+        }
+
+        variable.eslintImplicitGlobalSetting = configValue;
+        variable.eslintExplicitGlobal = sourceComments !== void 0;
+        variable.eslintExplicitGlobalComments = sourceComments;
+        variable.writeable = (value === "writable");
+    }
+
+    // mark all exported variables as such
+    Object.keys(exportedVariables).forEach(name => {
+        const variable = globalScope.set.get(name);
+
+        if (variable) {
+            variable.eslintUsed = true;
+            variable.eslintExported = true;
+        }
+    });
+
+    /*
+     * "through" contains all references which definitions cannot be found.
+     * Since we augment the global scope using configuration, we need to update
+     * references and remove the ones that were added by configuration.
+     */
+    globalScope.through = globalScope.through.filter(reference => {
+        const name = reference.identifier.name;
+        const variable = globalScope.set.get(name);
+
+        if (variable) {
+
+            /*
+             * Links the variable and the reference.
+             * And this reference is removed from `Scope#through`.
+             */
+            reference.resolved = variable;
+            variable.references.push(reference);
+
+            return false;
+        }
+
+        return true;
+    });
+}
+
+/**
+ * creates a missing-rule message.
+ * @param {string} ruleId the ruleId to create
+ * @returns {string} created error message
+ * @private
+ */
+function createMissingRuleMessage(ruleId) {
+    return Object.prototype.hasOwnProperty.call(ruleReplacements.rules, ruleId)
+        ? `Rule '${ruleId}' was removed and replaced by: ${ruleReplacements.rules[ruleId].join(", ")}`
+        : `Definition for rule '${ruleId}' was not found.`;
+}
+
+/**
+ * creates a linting problem
+ * @param {Object} options to create linting error
+ * @param {string} [options.ruleId] the ruleId to report
+ * @param {Object} [options.loc] the loc to report
+ * @param {string} [options.message] the error message to report
+ * @param {string} [options.severity] the error message to report
+ * @returns {LintMessage} created problem, returns a missing-rule problem if only provided ruleId.
+ * @private
+ */
+function createLintingProblem(options) {
+    const {
+        ruleId = null,
+        loc = DEFAULT_ERROR_LOC,
+        message = createMissingRuleMessage(options.ruleId),
+        severity = 2
+    } = options;
+
+    return {
+        ruleId,
+        message,
+        line: loc.start.line,
+        column: loc.start.column + 1,
+        endLine: loc.end.line,
+        endColumn: loc.end.column + 1,
+        severity,
+        nodeType: null
+    };
+}
+
+/**
+ * Creates a collection of disable directives from a comment
+ * @param {Object} options to create disable directives
+ * @param {("disable"|"enable"|"disable-line"|"disable-next-line")} options.type The type of directive comment
+ * @param {token} options.commentToken The Comment token
+ * @param {string} options.value The value after the directive in the comment
+ * comment specified no specific rules, so it applies to all rules (e.g. `eslint-disable`)
+ * @param {string} options.justification The justification of the directive
+ * @param {function(string): {create: Function}} options.ruleMapper A map from rule IDs to defined rules
+ * @returns {Object} Directives and problems from the comment
+ */
+function createDisableDirectives(options) {
+    const { commentToken, type, value, justification, ruleMapper } = options;
+    const ruleIds = Object.keys(commentParser.parseListConfig(value));
+    const directiveRules = ruleIds.length ? ruleIds : [null];
+    const result = {
+        directives: [], // valid disable directives
+        directiveProblems: [] // problems in directives
+    };
+
+    const parentComment = { commentToken, ruleIds };
+
+    for (const ruleId of directiveRules) {
+
+        // push to directives, if the rule is defined(including null, e.g. /*eslint enable*/)
+        if (ruleId === null || !!ruleMapper(ruleId)) {
+            if (type === "disable-next-line") {
+                result.directives.push({
+                    parentComment,
+                    type,
+                    line: commentToken.loc.end.line,
+                    column: commentToken.loc.end.column + 1,
+                    ruleId,
+                    justification
+                });
+            } else {
+                result.directives.push({
+                    parentComment,
+                    type,
+                    line: commentToken.loc.start.line,
+                    column: commentToken.loc.start.column + 1,
+                    ruleId,
+                    justification
+                });
+            }
+        } else {
+            result.directiveProblems.push(createLintingProblem({ ruleId, loc: commentToken.loc }));
+        }
+    }
+    return result;
+}
+
+/**
+ * Parses comments in file to extract file-specific config of rules, globals
+ * and environments and merges them with global config; also code blocks
+ * where reporting is disabled or enabled and merges them with reporting config.
+ * @param {SourceCode} sourceCode The SourceCode object to get comments from.
+ * @param {function(string): {create: Function}} ruleMapper A map from rule IDs to defined rules
+ * @param {string|null} warnInlineConfig If a string then it should warn directive comments as disabled. The string value is the config name what the setting came from.
+ * @returns {{configuredRules: Object, enabledGlobals: {value:string,comment:Token}[], exportedVariables: Object, problems: LintMessage[], disableDirectives: DisableDirective[]}}
+ * A collection of the directive comments that were found, along with any problems that occurred when parsing
+ */
+function getDirectiveComments(sourceCode, ruleMapper, warnInlineConfig) {
+    const configuredRules = {};
+    const enabledGlobals = Object.create(null);
+    const exportedVariables = {};
+    const problems = [];
+    const disableDirectives = [];
+    const validator = new ConfigValidator({
+        builtInRules: Rules
+    });
+
+    sourceCode.getInlineConfigNodes().filter(token => token.type !== "Shebang").forEach(comment => {
+        const { directivePart, justificationPart } = commentParser.extractDirectiveComment(comment.value);
+
+        const match = directivesPattern.exec(directivePart);
+
+        if (!match) {
+            return;
+        }
+        const directiveText = match[1];
+        const lineCommentSupported = /^eslint-disable-(next-)?line$/u.test(directiveText);
+
+        if (comment.type === "Line" && !lineCommentSupported) {
+            return;
+        }
+
+        if (warnInlineConfig) {
+            const kind = comment.type === "Block" ? `/*${directiveText}*/` : `//${directiveText}`;
+
+            problems.push(createLintingProblem({
+                ruleId: null,
+                message: `'${kind}' has no effect because you have 'noInlineConfig' setting in ${warnInlineConfig}.`,
+                loc: comment.loc,
+                severity: 1
+            }));
+            return;
+        }
+
+        if (directiveText === "eslint-disable-line" && comment.loc.start.line !== comment.loc.end.line) {
+            const message = `${directiveText} comment should not span multiple lines.`;
+
+            problems.push(createLintingProblem({
+                ruleId: null,
+                message,
+                loc: comment.loc
+            }));
+            return;
+        }
+
+        const directiveValue = directivePart.slice(match.index + directiveText.length);
+
+        switch (directiveText) {
+            case "eslint-disable":
+            case "eslint-enable":
+            case "eslint-disable-next-line":
+            case "eslint-disable-line": {
+                const directiveType = directiveText.slice("eslint-".length);
+                const options = { commentToken: comment, type: directiveType, value: directiveValue, justification: justificationPart, ruleMapper };
+                const { directives, directiveProblems } = createDisableDirectives(options);
+
+                disableDirectives.push(...directives);
+                problems.push(...directiveProblems);
+                break;
+            }
+
+            case "exported":
+                Object.assign(exportedVariables, commentParser.parseStringConfig(directiveValue, comment));
+                break;
+
+            case "globals":
+            case "global":
+                for (const [id, { value }] of Object.entries(commentParser.parseStringConfig(directiveValue, comment))) {
+                    let normalizedValue;
+
+                    try {
+                        normalizedValue = ConfigOps.normalizeConfigGlobal(value);
+                    } catch (err) {
+                        problems.push(createLintingProblem({
+                            ruleId: null,
+                            loc: comment.loc,
+                            message: err.message
+                        }));
+                        continue;
+                    }
+
+                    if (enabledGlobals[id]) {
+                        enabledGlobals[id].comments.push(comment);
+                        enabledGlobals[id].value = normalizedValue;
+                    } else {
+                        enabledGlobals[id] = {
+                            comments: [comment],
+                            value: normalizedValue
+                        };
+                    }
+                }
+                break;
+
+            case "eslint": {
+                const parseResult = commentParser.parseJsonConfig(directiveValue, comment.loc);
+
+                if (parseResult.success) {
+                    Object.keys(parseResult.config).forEach(name => {
+                        const rule = ruleMapper(name);
+                        const ruleValue = parseResult.config[name];
+
+                        if (!rule) {
+                            problems.push(createLintingProblem({ ruleId: name, loc: comment.loc }));
+                            return;
+                        }
+
+                        try {
+                            validator.validateRuleOptions(rule, name, ruleValue);
+                        } catch (err) {
+                            problems.push(createLintingProblem({
+                                ruleId: name,
+                                message: err.message,
+                                loc: comment.loc
+                            }));
+
+                            // do not apply the config, if found invalid options.
+                            return;
+                        }
+
+                        configuredRules[name] = ruleValue;
+                    });
+                } else {
+                    problems.push(parseResult.error);
+                }
+
+                break;
+            }
+
+            // no default
+        }
+    });
+
+    return {
+        configuredRules,
+        enabledGlobals,
+        exportedVariables,
+        problems,
+        disableDirectives
+    };
+}
+
+/**
+ * Parses comments in file to extract disable directives.
+ * @param {SourceCode} sourceCode The SourceCode object to get comments from.
+ * @param {function(string): {create: Function}} ruleMapper A map from rule IDs to defined rules
+ * @returns {{problems: LintMessage[], disableDirectives: DisableDirective[]}}
+ * A collection of the directive comments that were found, along with any problems that occurred when parsing
+ */
+function getDirectiveCommentsForFlatConfig(sourceCode, ruleMapper) {
+    const problems = [];
+    const disableDirectives = [];
+
+    sourceCode.getInlineConfigNodes().filter(token => token.type !== "Shebang").forEach(comment => {
+        const { directivePart, justificationPart } = commentParser.extractDirectiveComment(comment.value);
+
+        const match = directivesPattern.exec(directivePart);
+
+        if (!match) {
+            return;
+        }
+        const directiveText = match[1];
+        const lineCommentSupported = /^eslint-disable-(next-)?line$/u.test(directiveText);
+
+        if (comment.type === "Line" && !lineCommentSupported) {
+            return;
+        }
+
+        if (directiveText === "eslint-disable-line" && comment.loc.start.line !== comment.loc.end.line) {
+            const message = `${directiveText} comment should not span multiple lines.`;
+
+            problems.push(createLintingProblem({
+                ruleId: null,
+                message,
+                loc: comment.loc
+            }));
+            return;
+        }
+
+        const directiveValue = directivePart.slice(match.index + directiveText.length);
+
+        switch (directiveText) {
+            case "eslint-disable":
+            case "eslint-enable":
+            case "eslint-disable-next-line":
+            case "eslint-disable-line": {
+                const directiveType = directiveText.slice("eslint-".length);
+                const options = { commentToken: comment, type: directiveType, value: directiveValue, justification: justificationPart, ruleMapper };
+                const { directives, directiveProblems } = createDisableDirectives(options);
+
+                disableDirectives.push(...directives);
+                problems.push(...directiveProblems);
+                break;
+            }
+
+            // no default
+        }
+    });
+
+    return {
+        problems,
+        disableDirectives
+    };
+}
+
+/**
+ * Normalize ECMAScript version from the initial config
+ * @param {Parser} parser The parser which uses this options.
+ * @param {number} ecmaVersion ECMAScript version from the initial config
+ * @returns {number} normalized ECMAScript version
+ */
+function normalizeEcmaVersion(parser, ecmaVersion) {
+
+    if (isEspree(parser)) {
+        if (ecmaVersion === "latest") {
+            return espree.latestEcmaVersion;
+        }
+    }
+
+    /*
+     * Calculate ECMAScript edition number from official year version starting with
+     * ES2015, which corresponds with ES6 (or a difference of 2009).
+     */
+    return ecmaVersion >= 2015 ? ecmaVersion - 2009 : ecmaVersion;
+}
+
+/**
+ * Normalize ECMAScript version from the initial config into languageOptions (year)
+ * format.
+ * @param {any} [ecmaVersion] ECMAScript version from the initial config
+ * @returns {number} normalized ECMAScript version
+ */
+function normalizeEcmaVersionForLanguageOptions(ecmaVersion) {
+
+    switch (ecmaVersion) {
+        case 3:
+            return 3;
+
+        // void 0 = no ecmaVersion specified so use the default
+        case 5:
+        case void 0:
+            return 5;
+
+        default:
+            if (typeof ecmaVersion === "number") {
+                return ecmaVersion >= 2015 ? ecmaVersion : ecmaVersion + 2009;
+            }
+    }
+
+    /*
+     * We default to the latest supported ecmaVersion for everything else.
+     * Remember, this is for languageOptions.ecmaVersion, which sets the version
+     * that is used for a number of processes inside of ESLint. It's normally
+     * safe to assume people want the latest unless otherwise specified.
+     */
+    return espree.latestEcmaVersion + 2009;
+}
+
+const eslintEnvPattern = /\/\*\s*eslint-env\s(.+?)(?:\*\/|$)/gsu;
+
+/**
+ * Checks whether or not there is a comment which has "eslint-env *" in a given text.
+ * @param {string} text A source code text to check.
+ * @returns {Object|null} A result of parseListConfig() with "eslint-env *" comment.
+ */
+function findEslintEnv(text) {
+    let match, retv;
+
+    eslintEnvPattern.lastIndex = 0;
+
+    while ((match = eslintEnvPattern.exec(text)) !== null) {
+        if (match[0].endsWith("*/")) {
+            retv = Object.assign(
+                retv || {},
+                commentParser.parseListConfig(commentParser.extractDirectiveComment(match[1]).directivePart)
+            );
+        }
+    }
+
+    return retv;
+}
+
+/**
+ * Convert "/path/to/<text>" to "<text>".
+ * `CLIEngine#executeOnText()` method gives "/path/to/<text>" if the filename
+ * was omitted because `configArray.extractConfig()` requires an absolute path.
+ * But the linter should pass `<text>` to `RuleContext#filename` in that
+ * case.
+ * Also, code blocks can have their virtual filename. If the parent filename was
+ * `<text>`, the virtual filename is `<text>/0_foo.js` or something like (i.e.,
+ * it's not an absolute path).
+ * @param {string} filename The filename to normalize.
+ * @returns {string} The normalized filename.
+ */
+function normalizeFilename(filename) {
+    const parts = filename.split(path.sep);
+    const index = parts.lastIndexOf("<text>");
+
+    return index === -1 ? filename : parts.slice(index).join(path.sep);
+}
+
+/**
+ * Normalizes the possible options for `linter.verify` and `linter.verifyAndFix` to a
+ * consistent shape.
+ * @param {VerifyOptions} providedOptions Options
+ * @param {ConfigData} config Config.
+ * @returns {Required<VerifyOptions> & InternalOptions} Normalized options
+ */
+function normalizeVerifyOptions(providedOptions, config) {
+
+    const linterOptions = config.linterOptions || config;
+
+    // .noInlineConfig for eslintrc, .linterOptions.noInlineConfig for flat
+    const disableInlineConfig = linterOptions.noInlineConfig === true;
+    const ignoreInlineConfig = providedOptions.allowInlineConfig === false;
+    const configNameOfNoInlineConfig = config.configNameOfNoInlineConfig
+        ? ` (${config.configNameOfNoInlineConfig})`
+        : "";
+
+    let reportUnusedDisableDirectives = providedOptions.reportUnusedDisableDirectives;
+
+    if (typeof reportUnusedDisableDirectives === "boolean") {
+        reportUnusedDisableDirectives = reportUnusedDisableDirectives ? "error" : "off";
+    }
+    if (typeof reportUnusedDisableDirectives !== "string") {
+        if (typeof linterOptions.reportUnusedDisableDirectives === "boolean") {
+            reportUnusedDisableDirectives = linterOptions.reportUnusedDisableDirectives ? "warn" : "off";
+        } else {
+            reportUnusedDisableDirectives = linterOptions.reportUnusedDisableDirectives === void 0 ? "off" : normalizeSeverityToString(linterOptions.reportUnusedDisableDirectives);
+        }
+    }
+
+    return {
+        filename: normalizeFilename(providedOptions.filename || "<input>"),
+        allowInlineConfig: !ignoreInlineConfig,
+        warnInlineConfig: disableInlineConfig && !ignoreInlineConfig
+            ? `your config${configNameOfNoInlineConfig}`
+            : null,
+        reportUnusedDisableDirectives,
+        disableFixes: Boolean(providedOptions.disableFixes)
+    };
+}
+
+/**
+ * Combines the provided parserOptions with the options from environments
+ * @param {Parser} parser The parser which uses this options.
+ * @param {ParserOptions} providedOptions The provided 'parserOptions' key in a config
+ * @param {Environment[]} enabledEnvironments The environments enabled in configuration and with inline comments
+ * @returns {ParserOptions} Resulting parser options after merge
+ */
+function resolveParserOptions(parser, providedOptions, enabledEnvironments) {
+
+    const parserOptionsFromEnv = enabledEnvironments
+        .filter(env => env.parserOptions)
+        .reduce((parserOptions, env) => merge(parserOptions, env.parserOptions), {});
+    const mergedParserOptions = merge(parserOptionsFromEnv, providedOptions || {});
+    const isModule = mergedParserOptions.sourceType === "module";
+
+    if (isModule) {
+
+        /*
+         * can't have global return inside of modules
+         * TODO: espree validate parserOptions.globalReturn when sourceType is setting to module.(@aladdin-add)
+         */
+        mergedParserOptions.ecmaFeatures = Object.assign({}, mergedParserOptions.ecmaFeatures, { globalReturn: false });
+    }
+
+    mergedParserOptions.ecmaVersion = normalizeEcmaVersion(parser, mergedParserOptions.ecmaVersion);
+
+    return mergedParserOptions;
+}
+
+/**
+ * Converts parserOptions to languageOptions for backwards compatibility with eslintrc.
+ * @param {ConfigData} config Config object.
+ * @param {Object} config.globals Global variable definitions.
+ * @param {Parser} config.parser The parser to use.
+ * @param {ParserOptions} config.parserOptions The parserOptions to use.
+ * @returns {LanguageOptions} The languageOptions equivalent.
+ */
+function createLanguageOptions({ globals: configuredGlobals, parser, parserOptions }) {
+
+    const {
+        ecmaVersion,
+        sourceType
+    } = parserOptions;
+
+    return {
+        globals: configuredGlobals,
+        ecmaVersion: normalizeEcmaVersionForLanguageOptions(ecmaVersion),
+        sourceType,
+        parser,
+        parserOptions
+    };
+}
+
+/**
+ * Combines the provided globals object with the globals from environments
+ * @param {Record<string, GlobalConf>} providedGlobals The 'globals' key in a config
+ * @param {Environment[]} enabledEnvironments The environments enabled in configuration and with inline comments
+ * @returns {Record<string, GlobalConf>} The resolved globals object
+ */
+function resolveGlobals(providedGlobals, enabledEnvironments) {
+    return Object.assign(
+        Object.create(null),
+        ...enabledEnvironments.filter(env => env.globals).map(env => env.globals),
+        providedGlobals
+    );
+}
+
+/**
+ * Strips Unicode BOM from a given text.
+ * @param {string} text A text to strip.
+ * @returns {string} The stripped text.
+ */
+function stripUnicodeBOM(text) {
+
+    /*
+     * Check Unicode BOM.
+     * In JavaScript, string data is stored as UTF-16, so BOM is 0xFEFF.
+     * http://www.ecma-international.org/ecma-262/6.0/#sec-unicode-format-control-characters
+     */
+    if (text.charCodeAt(0) === 0xFEFF) {
+        return text.slice(1);
+    }
+    return text;
+}
+
+/**
+ * Get the options for a rule (not including severity), if any
+ * @param {Array|number} ruleConfig rule configuration
+ * @returns {Array} of rule options, empty Array if none
+ */
+function getRuleOptions(ruleConfig) {
+    if (Array.isArray(ruleConfig)) {
+        return ruleConfig.slice(1);
+    }
+    return [];
+
+}
+
+/**
+ * Analyze scope of the given AST.
+ * @param {ASTNode} ast The `Program` node to analyze.
+ * @param {LanguageOptions} languageOptions The parser options.
+ * @param {Record<string, string[]>} visitorKeys The visitor keys.
+ * @returns {ScopeManager} The analysis result.
+ */
+function analyzeScope(ast, languageOptions, visitorKeys) {
+    const parserOptions = languageOptions.parserOptions;
+    const ecmaFeatures = parserOptions.ecmaFeatures || {};
+    const ecmaVersion = languageOptions.ecmaVersion || DEFAULT_ECMA_VERSION;
+
+    return eslintScope.analyze(ast, {
+        ignoreEval: true,
+        nodejsScope: ecmaFeatures.globalReturn,
+        impliedStrict: ecmaFeatures.impliedStrict,
+        ecmaVersion: typeof ecmaVersion === "number" ? ecmaVersion : 6,
+        sourceType: languageOptions.sourceType || "script",
+        childVisitorKeys: visitorKeys || evk.KEYS,
+        fallback: Traverser.getKeys
+    });
+}
+
+/**
+ * Parses text into an AST. Moved out here because the try-catch prevents
+ * optimization of functions, so it's best to keep the try-catch as isolated
+ * as possible
+ * @param {string} text The text to parse.
+ * @param {LanguageOptions} languageOptions Options to pass to the parser
+ * @param {string} filePath The path to the file being parsed.
+ * @returns {{success: false, error: LintMessage}|{success: true, sourceCode: SourceCode}}
+ * An object containing the AST and parser services if parsing was successful, or the error if parsing failed
+ * @private
+ */
+function parse(text, languageOptions, filePath) {
+    const textToParse = stripUnicodeBOM(text).replace(astUtils.shebangPattern, (match, captured) => `//${captured}`);
+    const { ecmaVersion, sourceType, parser } = languageOptions;
+    const parserOptions = Object.assign(
+        { ecmaVersion, sourceType },
+        languageOptions.parserOptions,
+        {
+            loc: true,
+            range: true,
+            raw: true,
+            tokens: true,
+            comment: true,
+            eslintVisitorKeys: true,
+            eslintScopeManager: true,
+            filePath
+        }
+    );
+
+    /*
+     * Check for parsing errors first. If there's a parsing error, nothing
+     * else can happen. However, a parsing error does not throw an error
+     * from this method - it's just considered a fatal error message, a
+     * problem that ESLint identified just like any other.
+     */
+    try {
+        debug("Parsing:", filePath);
+        const parseResult = (typeof parser.parseForESLint === "function")
+            ? parser.parseForESLint(textToParse, parserOptions)
+            : { ast: parser.parse(textToParse, parserOptions) };
+
+        debug("Parsing successful:", filePath);
+        const ast = parseResult.ast;
+        const parserServices = parseResult.services || {};
+        const visitorKeys = parseResult.visitorKeys || evk.KEYS;
+
+        debug("Scope analysis:", filePath);
+        const scopeManager = parseResult.scopeManager || analyzeScope(ast, languageOptions, visitorKeys);
+
+        debug("Scope analysis successful:", filePath);
+
+        return {
+            success: true,
+
+            /*
+             * Save all values that `parseForESLint()` returned.
+             * If a `SourceCode` object is given as the first parameter instead of source code text,
+             * linter skips the parsing process and reuses the source code object.
+             * In that case, linter needs all the values that `parseForESLint()` returned.
+             */
+            sourceCode: new SourceCode({
+                text,
+                ast,
+                parserServices,
+                scopeManager,
+                visitorKeys
+            })
+        };
+    } catch (ex) {
+
+        // If the message includes a leading line number, strip it:
+        const message = `Parsing error: ${ex.message.replace(/^line \d+:/iu, "").trim()}`;
+
+        debug("%s\n%s", message, ex.stack);
+
+        return {
+            success: false,
+            error: {
+                ruleId: null,
+                fatal: true,
+                severity: 2,
+                message,
+                line: ex.lineNumber,
+                column: ex.column,
+                nodeType: null
+            }
+        };
+    }
+}
+
+/**
+ * Runs a rule, and gets its listeners
+ * @param {Rule} rule A normalized rule with a `create` method
+ * @param {Context} ruleContext The context that should be passed to the rule
+ * @throws {any} Any error during the rule's `create`
+ * @returns {Object} A map of selector listeners provided by the rule
+ */
+function createRuleListeners(rule, ruleContext) {
+    try {
+        return rule.create(ruleContext);
+    } catch (ex) {
+        ex.message = `Error while loading rule '${ruleContext.id}': ${ex.message}`;
+        throw ex;
+    }
+}
+
+// methods that exist on SourceCode object
+const DEPRECATED_SOURCECODE_PASSTHROUGHS = {
+    getSource: "getText",
+    getSourceLines: "getLines",
+    getAllComments: "getAllComments",
+    getNodeByRangeIndex: "getNodeByRangeIndex",
+    getComments: "getComments",
+    getCommentsBefore: "getCommentsBefore",
+    getCommentsAfter: "getCommentsAfter",
+    getCommentsInside: "getCommentsInside",
+    getJSDocComment: "getJSDocComment",
+    getFirstToken: "getFirstToken",
+    getFirstTokens: "getFirstTokens",
+    getLastToken: "getLastToken",
+    getLastTokens: "getLastTokens",
+    getTokenAfter: "getTokenAfter",
+    getTokenBefore: "getTokenBefore",
+    getTokenByRangeStart: "getTokenByRangeStart",
+    getTokens: "getTokens",
+    getTokensAfter: "getTokensAfter",
+    getTokensBefore: "getTokensBefore",
+    getTokensBetween: "getTokensBetween"
+};
+
+
+const BASE_TRAVERSAL_CONTEXT = Object.freeze(
+    Object.keys(DEPRECATED_SOURCECODE_PASSTHROUGHS).reduce(
+        (contextInfo, methodName) =>
+            Object.assign(contextInfo, {
+                [methodName](...args) {
+                    return this.sourceCode[DEPRECATED_SOURCECODE_PASSTHROUGHS[methodName]](...args);
+                }
+            }),
+        {}
+    )
+);
+
+/**
+ * Runs the given rules on the given SourceCode object
+ * @param {SourceCode} sourceCode A SourceCode object for the given text
+ * @param {Object} configuredRules The rules configuration
+ * @param {function(string): Rule} ruleMapper A mapper function from rule names to rules
+ * @param {string | undefined} parserName The name of the parser in the config
+ * @param {LanguageOptions} languageOptions The options for parsing the code.
+ * @param {Object} settings The settings that were enabled in the config
+ * @param {string} filename The reported filename of the code
+ * @param {boolean} disableFixes If true, it doesn't make `fix` properties.
+ * @param {string | undefined} cwd cwd of the cli
+ * @param {string} physicalFilename The full path of the file on disk without any code block information
+ * @returns {LintMessage[]} An array of reported problems
+ */
+function runRules(sourceCode, configuredRules, ruleMapper, parserName, languageOptions, settings, filename, disableFixes, cwd, physicalFilename) {
+    const emitter = createEmitter();
+    const nodeQueue = [];
+    let currentNode = sourceCode.ast;
+
+    Traverser.traverse(sourceCode.ast, {
+        enter(node, parent) {
+            node.parent = parent;
+            nodeQueue.push({ isEntering: true, node });
+        },
+        leave(node) {
+            nodeQueue.push({ isEntering: false, node });
+        },
+        visitorKeys: sourceCode.visitorKeys
+    });
+
+    /*
+     * Create a frozen object with the ruleContext properties and methods that are shared by all rules.
+     * All rule contexts will inherit from this object. This avoids the performance penalty of copying all the
+     * properties once for each rule.
+     */
+    const sharedTraversalContext = Object.freeze(
+        Object.assign(
+            Object.create(BASE_TRAVERSAL_CONTEXT),
+            {
+                getAncestors: () => sourceCode.getAncestors(currentNode),
+                getDeclaredVariables: node => sourceCode.getDeclaredVariables(node),
+                getCwd: () => cwd,
+                cwd,
+                getFilename: () => filename,
+                filename,
+                getPhysicalFilename: () => physicalFilename || filename,
+                physicalFilename: physicalFilename || filename,
+                getScope: () => sourceCode.getScope(currentNode),
+                getSourceCode: () => sourceCode,
+                sourceCode,
+                markVariableAsUsed: name => sourceCode.markVariableAsUsed(name, currentNode),
+                parserOptions: {
+                    ...languageOptions.parserOptions
+                },
+                parserPath: parserName,
+                languageOptions,
+                parserServices: sourceCode.parserServices,
+                settings
+            }
+        )
+    );
+
+    const lintingProblems = [];
+
+    Object.keys(configuredRules).forEach(ruleId => {
+        const severity = ConfigOps.getRuleSeverity(configuredRules[ruleId]);
+
+        // not load disabled rules
+        if (severity === 0) {
+            return;
+        }
+
+        const rule = ruleMapper(ruleId);
+
+        if (!rule) {
+            lintingProblems.push(createLintingProblem({ ruleId }));
+            return;
+        }
+
+        const messageIds = rule.meta && rule.meta.messages;
+        let reportTranslator = null;
+        const ruleContext = Object.freeze(
+            Object.assign(
+                Object.create(sharedTraversalContext),
+                {
+                    id: ruleId,
+                    options: getRuleOptions(configuredRules[ruleId]),
+                    report(...args) {
+
+                        /*
+                         * Create a report translator lazily.
+                         * In a vast majority of cases, any given rule reports zero errors on a given
+                         * piece of code. Creating a translator lazily avoids the performance cost of
+                         * creating a new translator function for each rule that usually doesn't get
+                         * called.
+                         *
+                         * Using lazy report translators improves end-to-end performance by about 3%
+                         * with Node 8.4.0.
+                         */
+                        if (reportTranslator === null) {
+                            reportTranslator = createReportTranslator({
+                                ruleId,
+                                severity,
+                                sourceCode,
+                                messageIds,
+                                disableFixes
+                            });
+                        }
+                        const problem = reportTranslator(...args);
+
+                        if (problem.fix && !(rule.meta && rule.meta.fixable)) {
+                            throw new Error("Fixable rules must set the `meta.fixable` property to \"code\" or \"whitespace\".");
+                        }
+                        if (problem.suggestions && !(rule.meta && rule.meta.hasSuggestions === true)) {
+                            if (rule.meta && rule.meta.docs && typeof rule.meta.docs.suggestion !== "undefined") {
+
+                                // Encourage migration from the former property name.
+                                throw new Error("Rules with suggestions must set the `meta.hasSuggestions` property to `true`. `meta.docs.suggestion` is ignored by ESLint.");
+                            }
+                            throw new Error("Rules with suggestions must set the `meta.hasSuggestions` property to `true`.");
+                        }
+                        lintingProblems.push(problem);
+                    }
+                }
+            )
+        );
+
+        const ruleListeners = timing.enabled ? timing.time(ruleId, createRuleListeners)(rule, ruleContext) : createRuleListeners(rule, ruleContext);
+
+        /**
+         * Include `ruleId` in error logs
+         * @param {Function} ruleListener A rule method that listens for a node.
+         * @returns {Function} ruleListener wrapped in error handler
+         */
+        function addRuleErrorHandler(ruleListener) {
+            return function ruleErrorHandler(...listenerArgs) {
+                try {
+                    return ruleListener(...listenerArgs);
+                } catch (e) {
+                    e.ruleId = ruleId;
+                    throw e;
+                }
+            };
+        }
+
+        if (typeof ruleListeners === "undefined" || ruleListeners === null) {
+            throw new Error(`The create() function for rule '${ruleId}' did not return an object.`);
+        }
+
+        // add all the selectors from the rule as listeners
+        Object.keys(ruleListeners).forEach(selector => {
+            const ruleListener = timing.enabled
+                ? timing.time(ruleId, ruleListeners[selector])
+                : ruleListeners[selector];
+
+            emitter.on(
+                selector,
+                addRuleErrorHandler(ruleListener)
+            );
+        });
+    });
+
+    // only run code path analyzer if the top level node is "Program", skip otherwise
+    const eventGenerator = nodeQueue[0].node.type === "Program"
+        ? new CodePathAnalyzer(new NodeEventGenerator(emitter, { visitorKeys: sourceCode.visitorKeys, fallback: Traverser.getKeys }))
+        : new NodeEventGenerator(emitter, { visitorKeys: sourceCode.visitorKeys, fallback: Traverser.getKeys });
+
+    nodeQueue.forEach(traversalInfo => {
+        currentNode = traversalInfo.node;
+
+        try {
+            if (traversalInfo.isEntering) {
+                eventGenerator.enterNode(currentNode);
+            } else {
+                eventGenerator.leaveNode(currentNode);
+            }
+        } catch (err) {
+            err.currentNode = currentNode;
+            throw err;
+        }
+    });
+
+    return lintingProblems;
+}
+
+/**
+ * Ensure the source code to be a string.
+ * @param {string|SourceCode} textOrSourceCode The text or source code object.
+ * @returns {string} The source code text.
+ */
+function ensureText(textOrSourceCode) {
+    if (typeof textOrSourceCode === "object") {
+        const { hasBOM, text } = textOrSourceCode;
+        const bom = hasBOM ? "\uFEFF" : "";
+
+        return bom + text;
+    }
+
+    return String(textOrSourceCode);
+}
+
+/**
+ * Get an environment.
+ * @param {LinterInternalSlots} slots The internal slots of Linter.
+ * @param {string} envId The environment ID to get.
+ * @returns {Environment|null} The environment.
+ */
+function getEnv(slots, envId) {
+    return (
+        (slots.lastConfigArray && slots.lastConfigArray.pluginEnvironments.get(envId)) ||
+        BuiltInEnvironments.get(envId) ||
+        null
+    );
+}
+
+/**
+ * Get a rule.
+ * @param {LinterInternalSlots} slots The internal slots of Linter.
+ * @param {string} ruleId The rule ID to get.
+ * @returns {Rule|null} The rule.
+ */
+function getRule(slots, ruleId) {
+    return (
+        (slots.lastConfigArray && slots.lastConfigArray.pluginRules.get(ruleId)) ||
+        slots.ruleMap.get(ruleId)
+    );
+}
+
+/**
+ * Normalize the value of the cwd
+ * @param {string | undefined} cwd raw value of the cwd, path to a directory that should be considered as the current working directory, can be undefined.
+ * @returns {string | undefined} normalized cwd
+ */
+function normalizeCwd(cwd) {
+    if (cwd) {
+        return cwd;
+    }
+    if (typeof process === "object") {
+        return process.cwd();
+    }
+
+    // It's more explicit to assign the undefined
+    // eslint-disable-next-line no-undefined -- Consistently returning a value
+    return undefined;
+}
+
+/**
+ * The map to store private data.
+ * @type {WeakMap<Linter, LinterInternalSlots>}
+ */
+const internalSlotsMap = new WeakMap();
+
+/**
+ * Throws an error when the given linter is in flat config mode.
+ * @param {Linter} linter The linter to check.
+ * @returns {void}
+ * @throws {Error} If the linter is in flat config mode.
+ */
+function assertEslintrcConfig(linter) {
+    const { configType } = internalSlotsMap.get(linter);
+
+    if (configType === "flat") {
+        throw new Error("This method cannot be used with flat config. Add your entries directly into the config array.");
+    }
+}
+
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * Object that is responsible for verifying JavaScript text
+ * @name Linter
+ */
+class Linter {
+
+    /**
+     * Initialize the Linter.
+     * @param {Object} [config] the config object
+     * @param {string} [config.cwd] path to a directory that should be considered as the current working directory, can be undefined.
+     * @param {"flat"|"eslintrc"} [config.configType="eslintrc"] the type of config used.
+     */
+    constructor({ cwd, configType } = {}) {
+        internalSlotsMap.set(this, {
+            cwd: normalizeCwd(cwd),
+            lastConfigArray: null,
+            lastSourceCode: null,
+            lastSuppressedMessages: [],
+            configType, // TODO: Remove after flat config conversion
+            parserMap: new Map([["espree", espree]]),
+            ruleMap: new Rules()
+        });
+
+        this.version = pkg.version;
+    }
+
+    /**
+     * Getter for package version.
+     * @static
+     * @returns {string} The version from package.json.
+     */
+    static get version() {
+        return pkg.version;
+    }
+
+    /**
+     * Same as linter.verify, except without support for processors.
+     * @param {string|SourceCode} textOrSourceCode The text to parse or a SourceCode object.
+     * @param {ConfigData} providedConfig An ESLintConfig instance to configure everything.
+     * @param {VerifyOptions} [providedOptions] The optional filename of the file being checked.
+     * @throws {Error} If during rule execution.
+     * @returns {(LintMessage|SuppressedLintMessage)[]} The results as an array of messages or an empty array if no messages.
+     */
+    _verifyWithoutProcessors(textOrSourceCode, providedConfig, providedOptions) {
+        const slots = internalSlotsMap.get(this);
+        const config = providedConfig || {};
+        const options = normalizeVerifyOptions(providedOptions, config);
+        let text;
+
+        // evaluate arguments
+        if (typeof textOrSourceCode === "string") {
+            slots.lastSourceCode = null;
+            text = textOrSourceCode;
+        } else {
+            slots.lastSourceCode = textOrSourceCode;
+            text = textOrSourceCode.text;
+        }
+
+        // Resolve parser.
+        let parserName = DEFAULT_PARSER_NAME;
+        let parser = espree;
+
+        if (typeof config.parser === "object" && config.parser !== null) {
+            parserName = config.parser.filePath;
+            parser = config.parser.definition;
+        } else if (typeof config.parser === "string") {
+            if (!slots.parserMap.has(config.parser)) {
+                return [{
+                    ruleId: null,
+                    fatal: true,
+                    severity: 2,
+                    message: `Configured parser '${config.parser}' was not found.`,
+                    line: 0,
+                    column: 0,
+                    nodeType: null
+                }];
+            }
+            parserName = config.parser;
+            parser = slots.parserMap.get(config.parser);
+        }
+
+        // search and apply "eslint-env *".
+        const envInFile = options.allowInlineConfig && !options.warnInlineConfig
+            ? findEslintEnv(text)
+            : {};
+        const resolvedEnvConfig = Object.assign({ builtin: true }, config.env, envInFile);
+        const enabledEnvs = Object.keys(resolvedEnvConfig)
+            .filter(envName => resolvedEnvConfig[envName])
+            .map(envName => getEnv(slots, envName))
+            .filter(env => env);
+
+        const parserOptions = resolveParserOptions(parser, config.parserOptions || {}, enabledEnvs);
+        const configuredGlobals = resolveGlobals(config.globals || {}, enabledEnvs);
+        const settings = config.settings || {};
+        const languageOptions = createLanguageOptions({
+            globals: config.globals,
+            parser,
+            parserOptions
+        });
+
+        if (!slots.lastSourceCode) {
+            const parseResult = parse(
+                text,
+                languageOptions,
+                options.filename
+            );
+
+            if (!parseResult.success) {
+                return [parseResult.error];
+            }
+
+            slots.lastSourceCode = parseResult.sourceCode;
+        } else {
+
+            /*
+             * If the given source code object as the first argument does not have scopeManager, analyze the scope.
+             * This is for backward compatibility (SourceCode is frozen so it cannot rebind).
+             */
+            if (!slots.lastSourceCode.scopeManager) {
+                slots.lastSourceCode = new SourceCode({
+                    text: slots.lastSourceCode.text,
+                    ast: slots.lastSourceCode.ast,
+                    parserServices: slots.lastSourceCode.parserServices,
+                    visitorKeys: slots.lastSourceCode.visitorKeys,
+                    scopeManager: analyzeScope(slots.lastSourceCode.ast, languageOptions)
+                });
+            }
+        }
+
+        const sourceCode = slots.lastSourceCode;
+        const commentDirectives = options.allowInlineConfig
+            ? getDirectiveComments(sourceCode, ruleId => getRule(slots, ruleId), options.warnInlineConfig)
+            : { configuredRules: {}, enabledGlobals: {}, exportedVariables: {}, problems: [], disableDirectives: [] };
+
+        // augment global scope with declared global variables
+        addDeclaredGlobals(
+            sourceCode.scopeManager.scopes[0],
+            configuredGlobals,
+            { exportedVariables: commentDirectives.exportedVariables, enabledGlobals: commentDirectives.enabledGlobals }
+        );
+
+        const configuredRules = Object.assign({}, config.rules, commentDirectives.configuredRules);
+        let lintingProblems;
+
+        try {
+            lintingProblems = runRules(
+                sourceCode,
+                configuredRules,
+                ruleId => getRule(slots, ruleId),
+                parserName,
+                languageOptions,
+                settings,
+                options.filename,
+                options.disableFixes,
+                slots.cwd,
+                providedOptions.physicalFilename
+            );
+        } catch (err) {
+            err.message += `\nOccurred while linting ${options.filename}`;
+            debug("An error occurred while traversing");
+            debug("Filename:", options.filename);
+            if (err.currentNode) {
+                const { line } = err.currentNode.loc.start;
+
+                debug("Line:", line);
+                err.message += `:${line}`;
+            }
+            debug("Parser Options:", parserOptions);
+            debug("Parser Path:", parserName);
+            debug("Settings:", settings);
+
+            if (err.ruleId) {
+                err.message += `\nRule: "${err.ruleId}"`;
+            }
+
+            throw err;
+        }
+
+        return applyDisableDirectives({
+            directives: commentDirectives.disableDirectives,
+            disableFixes: options.disableFixes,
+            problems: lintingProblems
+                .concat(commentDirectives.problems)
+                .sort((problemA, problemB) => problemA.line - problemB.line || problemA.column - problemB.column),
+            reportUnusedDisableDirectives: options.reportUnusedDisableDirectives
+        });
+    }
+
+    /**
+     * Verifies the text against the rules specified by the second argument.
+     * @param {string|SourceCode} textOrSourceCode The text to parse or a SourceCode object.
+     * @param {ConfigData|ConfigArray} config An ESLintConfig instance to configure everything.
+     * @param {(string|(VerifyOptions&ProcessorOptions))} [filenameOrOptions] The optional filename of the file being checked.
+     *      If this is not set, the filename will default to '<input>' in the rule context. If
+     *      an object, then it has "filename", "allowInlineConfig", and some properties.
+     * @returns {LintMessage[]} The results as an array of messages or an empty array if no messages.
+     */
+    verify(textOrSourceCode, config, filenameOrOptions) {
+        debug("Verify");
+
+        const { configType, cwd } = internalSlotsMap.get(this);
+
+        const options = typeof filenameOrOptions === "string"
+            ? { filename: filenameOrOptions }
+            : filenameOrOptions || {};
+
+        if (config) {
+            if (configType === "flat") {
+
+                /*
+                 * Because of how Webpack packages up the files, we can't
+                 * compare directly to `FlatConfigArray` using `instanceof`
+                 * because it's not the same `FlatConfigArray` as in the tests.
+                 * So, we work around it by assuming an array is, in fact, a
+                 * `FlatConfigArray` if it has a `getConfig()` method.
+                 */
+                let configArray = config;
+
+                if (!Array.isArray(config) || typeof config.getConfig !== "function") {
+                    configArray = new FlatConfigArray(config, { basePath: cwd });
+                    configArray.normalizeSync();
+                }
+
+                return this._distinguishSuppressedMessages(this._verifyWithFlatConfigArray(textOrSourceCode, configArray, options, true));
+            }
+
+            if (typeof config.extractConfig === "function") {
+                return this._distinguishSuppressedMessages(this._verifyWithConfigArray(textOrSourceCode, config, options));
+            }
+        }
+
+        /*
+         * If we get to here, it means `config` is just an object rather
+         * than a config array so we can go right into linting.
+         */
+
+        /*
+         * `Linter` doesn't support `overrides` property in configuration.
+         * So we cannot apply multiple processors.
+         */
+        if (options.preprocess || options.postprocess) {
+            return this._distinguishSuppressedMessages(this._verifyWithProcessor(textOrSourceCode, config, options));
+        }
+        return this._distinguishSuppressedMessages(this._verifyWithoutProcessors(textOrSourceCode, config, options));
+    }
+
+    /**
+     * Verify with a processor.
+     * @param {string|SourceCode} textOrSourceCode The source code.
+     * @param {FlatConfig} config The config array.
+     * @param {VerifyOptions&ProcessorOptions} options The options.
+     * @param {FlatConfigArray} [configForRecursive] The `ConfigArray` object to apply multiple processors recursively.
+     * @returns {(LintMessage|SuppressedLintMessage)[]} The found problems.
+     */
+    _verifyWithFlatConfigArrayAndProcessor(textOrSourceCode, config, options, configForRecursive) {
+        const filename = options.filename || "<input>";
+        const filenameToExpose = normalizeFilename(filename);
+        const physicalFilename = options.physicalFilename || filenameToExpose;
+        const text = ensureText(textOrSourceCode);
+        const preprocess = options.preprocess || (rawText => [rawText]);
+        const postprocess = options.postprocess || (messagesList => messagesList.flat());
+        const filterCodeBlock =
+            options.filterCodeBlock ||
+            (blockFilename => blockFilename.endsWith(".js"));
+        const originalExtname = path.extname(filename);
+
+        let blocks;
+
+        try {
+            blocks = preprocess(text, filenameToExpose);
+        } catch (ex) {
+
+            // If the message includes a leading line number, strip it:
+            const message = `Preprocessing error: ${ex.message.replace(/^line \d+:/iu, "").trim()}`;
+
+            debug("%s\n%s", message, ex.stack);
+
+            return [
+                {
+                    ruleId: null,
+                    fatal: true,
+                    severity: 2,
+                    message,
+                    line: ex.lineNumber,
+                    column: ex.column,
+                    nodeType: null
+                }
+            ];
+        }
+
+        const messageLists = blocks.map((block, i) => {
+            debug("A code block was found: %o", block.filename || "(unnamed)");
+
+            // Keep the legacy behavior.
+            if (typeof block === "string") {
+                return this._verifyWithFlatConfigArrayAndWithoutProcessors(block, config, options);
+            }
+
+            const blockText = block.text;
+            const blockName = path.join(filename, `${i}_${block.filename}`);
+
+            // Skip this block if filtered.
+            if (!filterCodeBlock(blockName, blockText)) {
+                debug("This code block was skipped.");
+                return [];
+            }
+
+            // Resolve configuration again if the file content or extension was changed.
+            if (configForRecursive && (text !== blockText || path.extname(blockName) !== originalExtname)) {
+                debug("Resolving configuration again because the file content or extension was changed.");
+                return this._verifyWithFlatConfigArray(
+                    blockText,
+                    configForRecursive,
+                    { ...options, filename: blockName, physicalFilename }
+                );
+            }
+
+            // Does lint.
+            return this._verifyWithFlatConfigArrayAndWithoutProcessors(
+                blockText,
+                config,
+                { ...options, filename: blockName, physicalFilename }
+            );
+        });
+
+        return postprocess(messageLists, filenameToExpose);
+    }
+
+    /**
+     * Same as linter.verify, except without support for processors.
+     * @param {string|SourceCode} textOrSourceCode The text to parse or a SourceCode object.
+     * @param {FlatConfig} providedConfig An ESLintConfig instance to configure everything.
+     * @param {VerifyOptions} [providedOptions] The optional filename of the file being checked.
+     * @throws {Error} If during rule execution.
+     * @returns {(LintMessage|SuppressedLintMessage)[]} The results as an array of messages or an empty array if no messages.
+     */
+    _verifyWithFlatConfigArrayAndWithoutProcessors(textOrSourceCode, providedConfig, providedOptions) {
+        const slots = internalSlotsMap.get(this);
+        const config = providedConfig || {};
+        const options = normalizeVerifyOptions(providedOptions, config);
+        let text;
+
+        // evaluate arguments
+        if (typeof textOrSourceCode === "string") {
+            slots.lastSourceCode = null;
+            text = textOrSourceCode;
+        } else {
+            slots.lastSourceCode = textOrSourceCode;
+            text = textOrSourceCode.text;
+        }
+
+        const languageOptions = config.languageOptions;
+
+        languageOptions.ecmaVersion = normalizeEcmaVersionForLanguageOptions(
+            languageOptions.ecmaVersion
+        );
+
+        // double check that there is a parser to avoid mysterious error messages
+        if (!languageOptions.parser) {
+            throw new TypeError(`No parser specified for ${options.filename}`);
+        }
+
+        // Espree expects this information to be passed in
+        if (isEspree(languageOptions.parser)) {
+            const parserOptions = languageOptions.parserOptions;
+
+            if (languageOptions.sourceType) {
+
+                parserOptions.sourceType = languageOptions.sourceType;
+
+                if (
+                    parserOptions.sourceType === "module" &&
+                    parserOptions.ecmaFeatures &&
+                    parserOptions.ecmaFeatures.globalReturn
+                ) {
+                    parserOptions.ecmaFeatures.globalReturn = false;
+                }
+            }
+        }
+
+        const settings = config.settings || {};
+
+        if (!slots.lastSourceCode) {
+            const parseResult = parse(
+                text,
+                languageOptions,
+                options.filename
+            );
+
+            if (!parseResult.success) {
+                return [parseResult.error];
+            }
+
+            slots.lastSourceCode = parseResult.sourceCode;
+        } else {
+
+            /*
+             * If the given source code object as the first argument does not have scopeManager, analyze the scope.
+             * This is for backward compatibility (SourceCode is frozen so it cannot rebind).
+             */
+            if (!slots.lastSourceCode.scopeManager) {
+                slots.lastSourceCode = new SourceCode({
+                    text: slots.lastSourceCode.text,
+                    ast: slots.lastSourceCode.ast,
+                    parserServices: slots.lastSourceCode.parserServices,
+                    visitorKeys: slots.lastSourceCode.visitorKeys,
+                    scopeManager: analyzeScope(slots.lastSourceCode.ast, languageOptions)
+                });
+            }
+        }
+
+        const sourceCode = slots.lastSourceCode;
+
+        /*
+         * Make adjustments based on the language options. For JavaScript,
+         * this is primarily about adding variables into the global scope
+         * to account for ecmaVersion and configured globals.
+         */
+        sourceCode.applyLanguageOptions(languageOptions);
+
+        const mergedInlineConfig = {
+            rules: {}
+        };
+        const inlineConfigProblems = [];
+
+        /*
+         * Inline config can be either enabled or disabled. If disabled, it's possible
+         * to detect the inline config and emit a warning (though this is not required).
+         * So we first check to see if inline config is allowed at all, and if so, we
+         * need to check if it's a warning or not.
+         */
+        if (options.allowInlineConfig) {
+
+            // if inline config should warn then add the warnings
+            if (options.warnInlineConfig) {
+                sourceCode.getInlineConfigNodes().forEach(node => {
+                    inlineConfigProblems.push(createLintingProblem({
+                        ruleId: null,
+                        message: `'${sourceCode.text.slice(node.range[0], node.range[1])}' has no effect because you have 'noInlineConfig' setting in ${options.warnInlineConfig}.`,
+                        loc: node.loc,
+                        severity: 1
+                    }));
+
+                });
+            } else {
+                const inlineConfigResult = sourceCode.applyInlineConfig();
+
+                inlineConfigProblems.push(
+                    ...inlineConfigResult.problems
+                        .map(createLintingProblem)
+                        .map(problem => {
+                            problem.fatal = true;
+                            return problem;
+                        })
+                );
+
+                // next we need to verify information about the specified rules
+                const ruleValidator = new RuleValidator();
+
+                for (const { config: inlineConfig, node } of inlineConfigResult.configs) {
+
+                    Object.keys(inlineConfig.rules).forEach(ruleId => {
+                        const rule = getRuleFromConfig(ruleId, config);
+                        const ruleValue = inlineConfig.rules[ruleId];
+
+                        if (!rule) {
+                            inlineConfigProblems.push(createLintingProblem({ ruleId, loc: node.loc }));
+                            return;
+                        }
+
+                        try {
+
+                            const ruleOptions = Array.isArray(ruleValue) ? ruleValue : [ruleValue];
+
+                            assertIsRuleOptions(ruleId, ruleValue);
+                            assertIsRuleSeverity(ruleId, ruleOptions[0]);
+
+                            ruleValidator.validate({
+                                plugins: config.plugins,
+                                rules: {
+                                    [ruleId]: ruleOptions
+                                }
+                            });
+                            mergedInlineConfig.rules[ruleId] = ruleValue;
+                        } catch (err) {
+
+                            let baseMessage = err.message.slice(
+                                err.message.startsWith("Key \"rules\":")
+                                    ? err.message.indexOf(":", 12) + 1
+                                    : err.message.indexOf(":") + 1
+                            ).trim();
+
+                            if (err.messageTemplate) {
+                                baseMessage += ` You passed "${ruleValue}".`;
+                            }
+
+                            inlineConfigProblems.push(createLintingProblem({
+                                ruleId,
+                                message: `Inline configuration for rule "${ruleId}" is invalid:\n\t${baseMessage}\n`,
+                                loc: node.loc
+                            }));
+                        }
+                    });
+                }
+            }
+        }
+
+        const commentDirectives = options.allowInlineConfig && !options.warnInlineConfig
+            ? getDirectiveCommentsForFlatConfig(
+                sourceCode,
+                ruleId => getRuleFromConfig(ruleId, config)
+            )
+            : { problems: [], disableDirectives: [] };
+
+        const configuredRules = Object.assign({}, config.rules, mergedInlineConfig.rules);
+        let lintingProblems;
+
+        sourceCode.finalize();
+
+        try {
+            lintingProblems = runRules(
+                sourceCode,
+                configuredRules,
+                ruleId => getRuleFromConfig(ruleId, config),
+                void 0,
+                languageOptions,
+                settings,
+                options.filename,
+                options.disableFixes,
+                slots.cwd,
+                providedOptions.physicalFilename
+            );
+        } catch (err) {
+            err.message += `\nOccurred while linting ${options.filename}`;
+            debug("An error occurred while traversing");
+            debug("Filename:", options.filename);
+            if (err.currentNode) {
+                const { line } = err.currentNode.loc.start;
+
+                debug("Line:", line);
+                err.message += `:${line}`;
+            }
+            debug("Parser Options:", languageOptions.parserOptions);
+
+            // debug("Parser Path:", parserName);
+            debug("Settings:", settings);
+
+            if (err.ruleId) {
+                err.message += `\nRule: "${err.ruleId}"`;
+            }
+
+            throw err;
+        }
+
+        return applyDisableDirectives({
+            directives: commentDirectives.disableDirectives,
+            disableFixes: options.disableFixes,
+            problems: lintingProblems
+                .concat(commentDirectives.problems)
+                .concat(inlineConfigProblems)
+                .sort((problemA, problemB) => problemA.line - problemB.line || problemA.column - problemB.column),
+            reportUnusedDisableDirectives: options.reportUnusedDisableDirectives
+        });
+    }
+
+    /**
+     * Verify a given code with `ConfigArray`.
+     * @param {string|SourceCode} textOrSourceCode The source code.
+     * @param {ConfigArray} configArray The config array.
+     * @param {VerifyOptions&ProcessorOptions} options The options.
+     * @returns {(LintMessage|SuppressedLintMessage)[]} The found problems.
+     */
+    _verifyWithConfigArray(textOrSourceCode, configArray, options) {
+        debug("With ConfigArray: %s", options.filename);
+
+        // Store the config array in order to get plugin envs and rules later.
+        internalSlotsMap.get(this).lastConfigArray = configArray;
+
+        // Extract the final config for this file.
+        const config = configArray.extractConfig(options.filename);
+        const processor =
+            config.processor &&
+            configArray.pluginProcessors.get(config.processor);
+
+        // Verify.
+        if (processor) {
+            debug("Apply the processor: %o", config.processor);
+            const { preprocess, postprocess, supportsAutofix } = processor;
+            const disableFixes = options.disableFixes || !supportsAutofix;
+
+            return this._verifyWithProcessor(
+                textOrSourceCode,
+                config,
+                { ...options, disableFixes, postprocess, preprocess },
+                configArray
+            );
+        }
+        return this._verifyWithoutProcessors(textOrSourceCode, config, options);
+    }
+
+    /**
+     * Verify a given code with a flat config.
+     * @param {string|SourceCode} textOrSourceCode The source code.
+     * @param {FlatConfigArray} configArray The config array.
+     * @param {VerifyOptions&ProcessorOptions} options The options.
+     * @param {boolean} [firstCall=false] Indicates if this is being called directly
+     *      from verify(). (TODO: Remove once eslintrc is removed.)
+     * @returns {(LintMessage|SuppressedLintMessage)[]} The found problems.
+     */
+    _verifyWithFlatConfigArray(textOrSourceCode, configArray, options, firstCall = false) {
+        debug("With flat config: %s", options.filename);
+
+        // we need a filename to match configs against
+        const filename = options.filename || "__placeholder__.js";
+
+        // Store the config array in order to get plugin envs and rules later.
+        internalSlotsMap.get(this).lastConfigArray = configArray;
+        const config = configArray.getConfig(filename);
+
+        if (!config) {
+            return [
+                {
+                    ruleId: null,
+                    severity: 1,
+                    message: `No matching configuration found for ${filename}.`,
+                    line: 0,
+                    column: 0,
+                    nodeType: null
+                }
+            ];
+        }
+
+        // Verify.
+        if (config.processor) {
+            debug("Apply the processor: %o", config.processor);
+            const { preprocess, postprocess, supportsAutofix } = config.processor;
+            const disableFixes = options.disableFixes || !supportsAutofix;
+
+            return this._verifyWithFlatConfigArrayAndProcessor(
+                textOrSourceCode,
+                config,
+                { ...options, filename, disableFixes, postprocess, preprocess },
+                configArray
+            );
+        }
+
+        // check for options-based processing
+        if (firstCall && (options.preprocess || options.postprocess)) {
+            return this._verifyWithFlatConfigArrayAndProcessor(textOrSourceCode, config, options);
+        }
+
+        return this._verifyWithFlatConfigArrayAndWithoutProcessors(textOrSourceCode, config, options);
+    }
+
+    /**
+     * Verify with a processor.
+     * @param {string|SourceCode} textOrSourceCode The source code.
+     * @param {ConfigData|ExtractedConfig} config The config array.
+     * @param {VerifyOptions&ProcessorOptions} options The options.
+     * @param {ConfigArray} [configForRecursive] The `ConfigArray` object to apply multiple processors recursively.
+     * @returns {(LintMessage|SuppressedLintMessage)[]} The found problems.
+     */
+    _verifyWithProcessor(textOrSourceCode, config, options, configForRecursive) {
+        const filename = options.filename || "<input>";
+        const filenameToExpose = normalizeFilename(filename);
+        const physicalFilename = options.physicalFilename || filenameToExpose;
+        const text = ensureText(textOrSourceCode);
+        const preprocess = options.preprocess || (rawText => [rawText]);
+        const postprocess = options.postprocess || (messagesList => messagesList.flat());
+        const filterCodeBlock =
+            options.filterCodeBlock ||
+            (blockFilename => blockFilename.endsWith(".js"));
+        const originalExtname = path.extname(filename);
+
+        let blocks;
+
+        try {
+            blocks = preprocess(text, filenameToExpose);
+        } catch (ex) {
+
+            // If the message includes a leading line number, strip it:
+            const message = `Preprocessing error: ${ex.message.replace(/^line \d+:/iu, "").trim()}`;
+
+            debug("%s\n%s", message, ex.stack);
+
+            return [
+                {
+                    ruleId: null,
+                    fatal: true,
+                    severity: 2,
+                    message,
+                    line: ex.lineNumber,
+                    column: ex.column,
+                    nodeType: null
+                }
+            ];
+        }
+
+        const messageLists = blocks.map((block, i) => {
+            debug("A code block was found: %o", block.filename || "(unnamed)");
+
+            // Keep the legacy behavior.
+            if (typeof block === "string") {
+                return this._verifyWithoutProcessors(block, config, options);
+            }
+
+            const blockText = block.text;
+            const blockName = path.join(filename, `${i}_${block.filename}`);
+
+            // Skip this block if filtered.
+            if (!filterCodeBlock(blockName, blockText)) {
+                debug("This code block was skipped.");
+                return [];
+            }
+
+            // Resolve configuration again if the file content or extension was changed.
+            if (configForRecursive && (text !== blockText || path.extname(blockName) !== originalExtname)) {
+                debug("Resolving configuration again because the file content or extension was changed.");
+                return this._verifyWithConfigArray(
+                    blockText,
+                    configForRecursive,
+                    { ...options, filename: blockName, physicalFilename }
+                );
+            }
+
+            // Does lint.
+            return this._verifyWithoutProcessors(
+                blockText,
+                config,
+                { ...options, filename: blockName, physicalFilename }
+            );
+        });
+
+        return postprocess(messageLists, filenameToExpose);
+    }
+
+    /**
+     * Given a list of reported problems, distinguish problems between normal messages and suppressed messages.
+     * The normal messages will be returned and the suppressed messages will be stored as lastSuppressedMessages.
+     * @param {Array<LintMessage|SuppressedLintMessage>} problems A list of reported problems.
+     * @returns {LintMessage[]} A list of LintMessage.
+     */
+    _distinguishSuppressedMessages(problems) {
+        const messages = [];
+        const suppressedMessages = [];
+        const slots = internalSlotsMap.get(this);
+
+        for (const problem of problems) {
+            if (problem.suppressions) {
+                suppressedMessages.push(problem);
+            } else {
+                messages.push(problem);
+            }
+        }
+
+        slots.lastSuppressedMessages = suppressedMessages;
+
+        return messages;
+    }
+
+    /**
+     * Gets the SourceCode object representing the parsed source.
+     * @returns {SourceCode} The SourceCode object.
+     */
+    getSourceCode() {
+        return internalSlotsMap.get(this).lastSourceCode;
+    }
+
+    /**
+     * Gets the list of SuppressedLintMessage produced in the last running.
+     * @returns {SuppressedLintMessage[]} The list of SuppressedLintMessage
+     */
+    getSuppressedMessages() {
+        return internalSlotsMap.get(this).lastSuppressedMessages;
+    }
+
+    /**
+     * Defines a new linting rule.
+     * @param {string} ruleId A unique rule identifier
+     * @param {Function | Rule} ruleModule Function from context to object mapping AST node types to event handlers
+     * @returns {void}
+     */
+    defineRule(ruleId, ruleModule) {
+        assertEslintrcConfig(this);
+        internalSlotsMap.get(this).ruleMap.define(ruleId, ruleModule);
+    }
+
+    /**
+     * Defines many new linting rules.
+     * @param {Record<string, Function | Rule>} rulesToDefine map from unique rule identifier to rule
+     * @returns {void}
+     */
+    defineRules(rulesToDefine) {
+        assertEslintrcConfig(this);
+        Object.getOwnPropertyNames(rulesToDefine).forEach(ruleId => {
+            this.defineRule(ruleId, rulesToDefine[ruleId]);
+        });
+    }
+
+    /**
+     * Gets an object with all loaded rules.
+     * @returns {Map<string, Rule>} All loaded rules
+     */
+    getRules() {
+        assertEslintrcConfig(this);
+        const { lastConfigArray, ruleMap } = internalSlotsMap.get(this);
+
+        return new Map(function *() {
+            yield* ruleMap;
+
+            if (lastConfigArray) {
+                yield* lastConfigArray.pluginRules;
+            }
+        }());
+    }
+
+    /**
+     * Define a new parser module
+     * @param {string} parserId Name of the parser
+     * @param {Parser} parserModule The parser object
+     * @returns {void}
+     */
+    defineParser(parserId, parserModule) {
+        assertEslintrcConfig(this);
+        internalSlotsMap.get(this).parserMap.set(parserId, parserModule);
+    }
+
+    /**
+     * Performs multiple autofix passes over the text until as many fixes as possible
+     * have been applied.
+     * @param {string} text The source text to apply fixes to.
+     * @param {ConfigData|ConfigArray|FlatConfigArray} config The ESLint config object to use.
+     * @param {VerifyOptions&ProcessorOptions&FixOptions} options The ESLint options object to use.
+     * @returns {{fixed:boolean,messages:LintMessage[],output:string}} The result of the fix operation as returned from the
+     *      SourceCodeFixer.
+     */
+    verifyAndFix(text, config, options) {
+        let messages = [],
+            fixedResult,
+            fixed = false,
+            passNumber = 0,
+            currentText = text;
+        const debugTextDescription = options && options.filename || `${text.slice(0, 10)}...`;
+        const shouldFix = options && typeof options.fix !== "undefined" ? options.fix : true;
+
+        /**
+         * This loop continues until one of the following is true:
+         *
+         * 1. No more fixes have been applied.
+         * 2. Ten passes have been made.
+         *
+         * That means anytime a fix is successfully applied, there will be another pass.
+         * Essentially, guaranteeing a minimum of two passes.
+         */
+        do {
+            passNumber++;
+
+            debug(`Linting code for ${debugTextDescription} (pass ${passNumber})`);
+            messages = this.verify(currentText, config, options);
+
+            debug(`Generating fixed text for ${debugTextDescription} (pass ${passNumber})`);
+            fixedResult = SourceCodeFixer.applyFixes(currentText, messages, shouldFix);
+
+            /*
+             * stop if there are any syntax errors.
+             * 'fixedResult.output' is a empty string.
+             */
+            if (messages.length === 1 && messages[0].fatal) {
+                break;
+            }
+
+            // keep track if any fixes were ever applied - important for return value
+            fixed = fixed || fixedResult.fixed;
+
+            // update to use the fixed output instead of the original text
+            currentText = fixedResult.output;
+
+        } while (
+            fixedResult.fixed &&
+            passNumber < MAX_AUTOFIX_PASSES
+        );
+
+        /*
+         * If the last result had fixes, we need to lint again to be sure we have
+         * the most up-to-date information.
+         */
+        if (fixedResult.fixed) {
+            fixedResult.messages = this.verify(currentText, config, options);
+        }
+
+        // ensure the last result properly reflects if fixes were done
+        fixedResult.fixed = fixed;
+        fixedResult.output = currentText;
+
+        return fixedResult;
+    }
+}
+
+module.exports = {
+    Linter,
+
+    /**
+     * Get the internal slots of a given Linter instance for tests.
+     * @param {Linter} instance The Linter instance to get.
+     * @returns {LinterInternalSlots} The internal slots.
+     */
+    getLinterInternalSlots(instance) {
+        return internalSlotsMap.get(instance);
+    }
+};
Index: frontend/node_modules/eslint/lib/linter/node-event-generator.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/node-event-generator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/node-event-generator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,354 @@
+/**
+ * @fileoverview The event generator for AST nodes.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const esquery = require("esquery");
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/**
+ * An object describing an AST selector
+ * @typedef {Object} ASTSelector
+ * @property {string} rawSelector The string that was parsed into this selector
+ * @property {boolean} isExit `true` if this should be emitted when exiting the node rather than when entering
+ * @property {Object} parsedSelector An object (from esquery) describing the matching behavior of the selector
+ * @property {string[]|null} listenerTypes A list of node types that could possibly cause the selector to match,
+ * or `null` if all node types could cause a match
+ * @property {number} attributeCount The total number of classes, pseudo-classes, and attribute queries in this selector
+ * @property {number} identifierCount The total number of identifier queries in this selector
+ */
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Computes the union of one or more arrays
+ * @param {...any[]} arrays One or more arrays to union
+ * @returns {any[]} The union of the input arrays
+ */
+function union(...arrays) {
+    return [...new Set(arrays.flat())];
+}
+
+/**
+ * Computes the intersection of one or more arrays
+ * @param {...any[]} arrays One or more arrays to intersect
+ * @returns {any[]} The intersection of the input arrays
+ */
+function intersection(...arrays) {
+    if (arrays.length === 0) {
+        return [];
+    }
+
+    let result = [...new Set(arrays[0])];
+
+    for (const array of arrays.slice(1)) {
+        result = result.filter(x => array.includes(x));
+    }
+    return result;
+}
+
+/**
+ * Gets the possible types of a selector
+ * @param {Object} parsedSelector An object (from esquery) describing the matching behavior of the selector
+ * @returns {string[]|null} The node types that could possibly trigger this selector, or `null` if all node types could trigger it
+ */
+function getPossibleTypes(parsedSelector) {
+    switch (parsedSelector.type) {
+        case "identifier":
+            return [parsedSelector.value];
+
+        case "matches": {
+            const typesForComponents = parsedSelector.selectors.map(getPossibleTypes);
+
+            if (typesForComponents.every(Boolean)) {
+                return union(...typesForComponents);
+            }
+            return null;
+        }
+
+        case "compound": {
+            const typesForComponents = parsedSelector.selectors.map(getPossibleTypes).filter(typesForComponent => typesForComponent);
+
+            // If all of the components could match any type, then the compound could also match any type.
+            if (!typesForComponents.length) {
+                return null;
+            }
+
+            /*
+             * If at least one of the components could only match a particular type, the compound could only match
+             * the intersection of those types.
+             */
+            return intersection(...typesForComponents);
+        }
+
+        case "child":
+        case "descendant":
+        case "sibling":
+        case "adjacent":
+            return getPossibleTypes(parsedSelector.right);
+
+        case "class":
+            if (parsedSelector.name === "function") {
+                return ["FunctionDeclaration", "FunctionExpression", "ArrowFunctionExpression"];
+            }
+
+            return null;
+
+        default:
+            return null;
+
+    }
+}
+
+/**
+ * Counts the number of class, pseudo-class, and attribute queries in this selector
+ * @param {Object} parsedSelector An object (from esquery) describing the selector's matching behavior
+ * @returns {number} The number of class, pseudo-class, and attribute queries in this selector
+ */
+function countClassAttributes(parsedSelector) {
+    switch (parsedSelector.type) {
+        case "child":
+        case "descendant":
+        case "sibling":
+        case "adjacent":
+            return countClassAttributes(parsedSelector.left) + countClassAttributes(parsedSelector.right);
+
+        case "compound":
+        case "not":
+        case "matches":
+            return parsedSelector.selectors.reduce((sum, childSelector) => sum + countClassAttributes(childSelector), 0);
+
+        case "attribute":
+        case "field":
+        case "nth-child":
+        case "nth-last-child":
+            return 1;
+
+        default:
+            return 0;
+    }
+}
+
+/**
+ * Counts the number of identifier queries in this selector
+ * @param {Object} parsedSelector An object (from esquery) describing the selector's matching behavior
+ * @returns {number} The number of identifier queries
+ */
+function countIdentifiers(parsedSelector) {
+    switch (parsedSelector.type) {
+        case "child":
+        case "descendant":
+        case "sibling":
+        case "adjacent":
+            return countIdentifiers(parsedSelector.left) + countIdentifiers(parsedSelector.right);
+
+        case "compound":
+        case "not":
+        case "matches":
+            return parsedSelector.selectors.reduce((sum, childSelector) => sum + countIdentifiers(childSelector), 0);
+
+        case "identifier":
+            return 1;
+
+        default:
+            return 0;
+    }
+}
+
+/**
+ * Compares the specificity of two selector objects, with CSS-like rules.
+ * @param {ASTSelector} selectorA An AST selector descriptor
+ * @param {ASTSelector} selectorB Another AST selector descriptor
+ * @returns {number}
+ * a value less than 0 if selectorA is less specific than selectorB
+ * a value greater than 0 if selectorA is more specific than selectorB
+ * a value less than 0 if selectorA and selectorB have the same specificity, and selectorA <= selectorB alphabetically
+ * a value greater than 0 if selectorA and selectorB have the same specificity, and selectorA > selectorB alphabetically
+ */
+function compareSpecificity(selectorA, selectorB) {
+    return selectorA.attributeCount - selectorB.attributeCount ||
+        selectorA.identifierCount - selectorB.identifierCount ||
+        (selectorA.rawSelector <= selectorB.rawSelector ? -1 : 1);
+}
+
+/**
+ * Parses a raw selector string, and throws a useful error if parsing fails.
+ * @param {string} rawSelector A raw AST selector
+ * @returns {Object} An object (from esquery) describing the matching behavior of this selector
+ * @throws {Error} An error if the selector is invalid
+ */
+function tryParseSelector(rawSelector) {
+    try {
+        return esquery.parse(rawSelector.replace(/:exit$/u, ""));
+    } catch (err) {
+        if (err.location && err.location.start && typeof err.location.start.offset === "number") {
+            throw new SyntaxError(`Syntax error in selector "${rawSelector}" at position ${err.location.start.offset}: ${err.message}`);
+        }
+        throw err;
+    }
+}
+
+const selectorCache = new Map();
+
+/**
+ * Parses a raw selector string, and returns the parsed selector along with specificity and type information.
+ * @param {string} rawSelector A raw AST selector
+ * @returns {ASTSelector} A selector descriptor
+ */
+function parseSelector(rawSelector) {
+    if (selectorCache.has(rawSelector)) {
+        return selectorCache.get(rawSelector);
+    }
+
+    const parsedSelector = tryParseSelector(rawSelector);
+
+    const result = {
+        rawSelector,
+        isExit: rawSelector.endsWith(":exit"),
+        parsedSelector,
+        listenerTypes: getPossibleTypes(parsedSelector),
+        attributeCount: countClassAttributes(parsedSelector),
+        identifierCount: countIdentifiers(parsedSelector)
+    };
+
+    selectorCache.set(rawSelector, result);
+    return result;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * The event generator for AST nodes.
+ * This implements below interface.
+ *
+ * ```ts
+ * interface EventGenerator {
+ *     emitter: SafeEmitter;
+ *     enterNode(node: ASTNode): void;
+ *     leaveNode(node: ASTNode): void;
+ * }
+ * ```
+ */
+class NodeEventGenerator {
+
+    /**
+     * @param {SafeEmitter} emitter
+     * An SafeEmitter which is the destination of events. This emitter must already
+     * have registered listeners for all of the events that it needs to listen for.
+     * (See lib/linter/safe-emitter.js for more details on `SafeEmitter`.)
+     * @param {ESQueryOptions} esqueryOptions `esquery` options for traversing custom nodes.
+     * @returns {NodeEventGenerator} new instance
+     */
+    constructor(emitter, esqueryOptions) {
+        this.emitter = emitter;
+        this.esqueryOptions = esqueryOptions;
+        this.currentAncestry = [];
+        this.enterSelectorsByNodeType = new Map();
+        this.exitSelectorsByNodeType = new Map();
+        this.anyTypeEnterSelectors = [];
+        this.anyTypeExitSelectors = [];
+
+        emitter.eventNames().forEach(rawSelector => {
+            const selector = parseSelector(rawSelector);
+
+            if (selector.listenerTypes) {
+                const typeMap = selector.isExit ? this.exitSelectorsByNodeType : this.enterSelectorsByNodeType;
+
+                selector.listenerTypes.forEach(nodeType => {
+                    if (!typeMap.has(nodeType)) {
+                        typeMap.set(nodeType, []);
+                    }
+                    typeMap.get(nodeType).push(selector);
+                });
+                return;
+            }
+            const selectors = selector.isExit ? this.anyTypeExitSelectors : this.anyTypeEnterSelectors;
+
+            selectors.push(selector);
+        });
+
+        this.anyTypeEnterSelectors.sort(compareSpecificity);
+        this.anyTypeExitSelectors.sort(compareSpecificity);
+        this.enterSelectorsByNodeType.forEach(selectorList => selectorList.sort(compareSpecificity));
+        this.exitSelectorsByNodeType.forEach(selectorList => selectorList.sort(compareSpecificity));
+    }
+
+    /**
+     * Checks a selector against a node, and emits it if it matches
+     * @param {ASTNode} node The node to check
+     * @param {ASTSelector} selector An AST selector descriptor
+     * @returns {void}
+     */
+    applySelector(node, selector) {
+        if (esquery.matches(node, selector.parsedSelector, this.currentAncestry, this.esqueryOptions)) {
+            this.emitter.emit(selector.rawSelector, node);
+        }
+    }
+
+    /**
+     * Applies all appropriate selectors to a node, in specificity order
+     * @param {ASTNode} node The node to check
+     * @param {boolean} isExit `false` if the node is currently being entered, `true` if it's currently being exited
+     * @returns {void}
+     */
+    applySelectors(node, isExit) {
+        const selectorsByNodeType = (isExit ? this.exitSelectorsByNodeType : this.enterSelectorsByNodeType).get(node.type) || [];
+        const anyTypeSelectors = isExit ? this.anyTypeExitSelectors : this.anyTypeEnterSelectors;
+
+        /*
+         * selectorsByNodeType and anyTypeSelectors were already sorted by specificity in the constructor.
+         * Iterate through each of them, applying selectors in the right order.
+         */
+        let selectorsByTypeIndex = 0;
+        let anyTypeSelectorsIndex = 0;
+
+        while (selectorsByTypeIndex < selectorsByNodeType.length || anyTypeSelectorsIndex < anyTypeSelectors.length) {
+            if (
+                selectorsByTypeIndex >= selectorsByNodeType.length ||
+                anyTypeSelectorsIndex < anyTypeSelectors.length &&
+                compareSpecificity(anyTypeSelectors[anyTypeSelectorsIndex], selectorsByNodeType[selectorsByTypeIndex]) < 0
+            ) {
+                this.applySelector(node, anyTypeSelectors[anyTypeSelectorsIndex++]);
+            } else {
+                this.applySelector(node, selectorsByNodeType[selectorsByTypeIndex++]);
+            }
+        }
+    }
+
+    /**
+     * Emits an event of entering AST node.
+     * @param {ASTNode} node A node which was entered.
+     * @returns {void}
+     */
+    enterNode(node) {
+        if (node.parent) {
+            this.currentAncestry.unshift(node.parent);
+        }
+        this.applySelectors(node, false);
+    }
+
+    /**
+     * Emits an event of leaving AST node.
+     * @param {ASTNode} node A node which was left.
+     * @returns {void}
+     */
+    leaveNode(node) {
+        this.applySelectors(node, true);
+        this.currentAncestry.shift();
+    }
+}
+
+module.exports = NodeEventGenerator;
Index: frontend/node_modules/eslint/lib/linter/report-translator.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/report-translator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/report-translator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,369 @@
+/**
+ * @fileoverview A helper that translates context.report() calls from the rule API into generic problem objects
+ * @author Teddy Katz
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const assert = require("assert");
+const ruleFixer = require("./rule-fixer");
+const interpolate = require("./interpolate");
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/** @typedef {import("../shared/types").LintMessage} LintMessage */
+
+/**
+ * An error message description
+ * @typedef {Object} MessageDescriptor
+ * @property {ASTNode} [node] The reported node
+ * @property {Location} loc The location of the problem.
+ * @property {string} message The problem message.
+ * @property {Object} [data] Optional data to use to fill in placeholders in the
+ *      message.
+ * @property {Function} [fix] The function to call that creates a fix command.
+ * @property {Array<{desc?: string, messageId?: string, fix: Function}>} suggest Suggestion descriptions and functions to create a the associated fixes.
+ */
+
+//------------------------------------------------------------------------------
+// Module Definition
+//------------------------------------------------------------------------------
+
+
+/**
+ * Translates a multi-argument context.report() call into a single object argument call
+ * @param {...*} args A list of arguments passed to `context.report`
+ * @returns {MessageDescriptor} A normalized object containing report information
+ */
+function normalizeMultiArgReportCall(...args) {
+
+    // If there is one argument, it is considered to be a new-style call already.
+    if (args.length === 1) {
+
+        // Shallow clone the object to avoid surprises if reusing the descriptor
+        return Object.assign({}, args[0]);
+    }
+
+    // If the second argument is a string, the arguments are interpreted as [node, message, data, fix].
+    if (typeof args[1] === "string") {
+        return {
+            node: args[0],
+            message: args[1],
+            data: args[2],
+            fix: args[3]
+        };
+    }
+
+    // Otherwise, the arguments are interpreted as [node, loc, message, data, fix].
+    return {
+        node: args[0],
+        loc: args[1],
+        message: args[2],
+        data: args[3],
+        fix: args[4]
+    };
+}
+
+/**
+ * Asserts that either a loc or a node was provided, and the node is valid if it was provided.
+ * @param {MessageDescriptor} descriptor A descriptor to validate
+ * @returns {void}
+ * @throws AssertionError if neither a node nor a loc was provided, or if the node is not an object
+ */
+function assertValidNodeInfo(descriptor) {
+    if (descriptor.node) {
+        assert(typeof descriptor.node === "object", "Node must be an object");
+    } else {
+        assert(descriptor.loc, "Node must be provided when reporting error if location is not provided");
+    }
+}
+
+/**
+ * Normalizes a MessageDescriptor to always have a `loc` with `start` and `end` properties
+ * @param {MessageDescriptor} descriptor A descriptor for the report from a rule.
+ * @returns {{start: Location, end: (Location|null)}} An updated location that infers the `start` and `end` properties
+ * from the `node` of the original descriptor, or infers the `start` from the `loc` of the original descriptor.
+ */
+function normalizeReportLoc(descriptor) {
+    if (descriptor.loc) {
+        if (descriptor.loc.start) {
+            return descriptor.loc;
+        }
+        return { start: descriptor.loc, end: null };
+    }
+    return descriptor.node.loc;
+}
+
+/**
+ * Clones the given fix object.
+ * @param {Fix|null} fix The fix to clone.
+ * @returns {Fix|null} Deep cloned fix object or `null` if `null` or `undefined` was passed in.
+ */
+function cloneFix(fix) {
+    if (!fix) {
+        return null;
+    }
+
+    return {
+        range: [fix.range[0], fix.range[1]],
+        text: fix.text
+    };
+}
+
+/**
+ * Check that a fix has a valid range.
+ * @param {Fix|null} fix The fix to validate.
+ * @returns {void}
+ */
+function assertValidFix(fix) {
+    if (fix) {
+        assert(fix.range && typeof fix.range[0] === "number" && typeof fix.range[1] === "number", `Fix has invalid range: ${JSON.stringify(fix, null, 2)}`);
+    }
+}
+
+/**
+ * Compares items in a fixes array by range.
+ * @param {Fix} a The first message.
+ * @param {Fix} b The second message.
+ * @returns {int} -1 if a comes before b, 1 if a comes after b, 0 if equal.
+ * @private
+ */
+function compareFixesByRange(a, b) {
+    return a.range[0] - b.range[0] || a.range[1] - b.range[1];
+}
+
+/**
+ * Merges the given fixes array into one.
+ * @param {Fix[]} fixes The fixes to merge.
+ * @param {SourceCode} sourceCode The source code object to get the text between fixes.
+ * @returns {{text: string, range: number[]}} The merged fixes
+ */
+function mergeFixes(fixes, sourceCode) {
+    for (const fix of fixes) {
+        assertValidFix(fix);
+    }
+
+    if (fixes.length === 0) {
+        return null;
+    }
+    if (fixes.length === 1) {
+        return cloneFix(fixes[0]);
+    }
+
+    fixes.sort(compareFixesByRange);
+
+    const originalText = sourceCode.text;
+    const start = fixes[0].range[0];
+    const end = fixes[fixes.length - 1].range[1];
+    let text = "";
+    let lastPos = Number.MIN_SAFE_INTEGER;
+
+    for (const fix of fixes) {
+        assert(fix.range[0] >= lastPos, "Fix objects must not be overlapped in a report.");
+
+        if (fix.range[0] >= 0) {
+            text += originalText.slice(Math.max(0, start, lastPos), fix.range[0]);
+        }
+        text += fix.text;
+        lastPos = fix.range[1];
+    }
+    text += originalText.slice(Math.max(0, start, lastPos), end);
+
+    return { range: [start, end], text };
+}
+
+/**
+ * Gets one fix object from the given descriptor.
+ * If the descriptor retrieves multiple fixes, this merges those to one.
+ * @param {MessageDescriptor} descriptor The report descriptor.
+ * @param {SourceCode} sourceCode The source code object to get text between fixes.
+ * @returns {({text: string, range: number[]}|null)} The fix for the descriptor
+ */
+function normalizeFixes(descriptor, sourceCode) {
+    if (typeof descriptor.fix !== "function") {
+        return null;
+    }
+
+    // @type {null | Fix | Fix[] | IterableIterator<Fix>}
+    const fix = descriptor.fix(ruleFixer);
+
+    // Merge to one.
+    if (fix && Symbol.iterator in fix) {
+        return mergeFixes(Array.from(fix), sourceCode);
+    }
+
+    assertValidFix(fix);
+    return cloneFix(fix);
+}
+
+/**
+ * Gets an array of suggestion objects from the given descriptor.
+ * @param {MessageDescriptor} descriptor The report descriptor.
+ * @param {SourceCode} sourceCode The source code object to get text between fixes.
+ * @param {Object} messages Object of meta messages for the rule.
+ * @returns {Array<SuggestionResult>} The suggestions for the descriptor
+ */
+function mapSuggestions(descriptor, sourceCode, messages) {
+    if (!descriptor.suggest || !Array.isArray(descriptor.suggest)) {
+        return [];
+    }
+
+    return descriptor.suggest
+        .map(suggestInfo => {
+            const computedDesc = suggestInfo.desc || messages[suggestInfo.messageId];
+
+            return {
+                ...suggestInfo,
+                desc: interpolate(computedDesc, suggestInfo.data),
+                fix: normalizeFixes(suggestInfo, sourceCode)
+            };
+        })
+
+        // Remove suggestions that didn't provide a fix
+        .filter(({ fix }) => fix);
+}
+
+/**
+ * Creates information about the report from a descriptor
+ * @param {Object} options Information about the problem
+ * @param {string} options.ruleId Rule ID
+ * @param {(0|1|2)} options.severity Rule severity
+ * @param {(ASTNode|null)} options.node Node
+ * @param {string} options.message Error message
+ * @param {string} [options.messageId] The error message ID.
+ * @param {{start: SourceLocation, end: (SourceLocation|null)}} options.loc Start and end location
+ * @param {{text: string, range: (number[]|null)}} options.fix The fix object
+ * @param {Array<{text: string, range: (number[]|null)}>} options.suggestions The array of suggestions objects
+ * @returns {LintMessage} Information about the report
+ */
+function createProblem(options) {
+    const problem = {
+        ruleId: options.ruleId,
+        severity: options.severity,
+        message: options.message,
+        line: options.loc.start.line,
+        column: options.loc.start.column + 1,
+        nodeType: options.node && options.node.type || null
+    };
+
+    /*
+     * If this isn’t in the conditional, some of the tests fail
+     * because `messageId` is present in the problem object
+     */
+    if (options.messageId) {
+        problem.messageId = options.messageId;
+    }
+
+    if (options.loc.end) {
+        problem.endLine = options.loc.end.line;
+        problem.endColumn = options.loc.end.column + 1;
+    }
+
+    if (options.fix) {
+        problem.fix = options.fix;
+    }
+
+    if (options.suggestions && options.suggestions.length > 0) {
+        problem.suggestions = options.suggestions;
+    }
+
+    return problem;
+}
+
+/**
+ * Validates that suggestions are properly defined. Throws if an error is detected.
+ * @param {Array<{ desc?: string, messageId?: string }>} suggest The incoming suggest data.
+ * @param {Object} messages Object of meta messages for the rule.
+ * @returns {void}
+ */
+function validateSuggestions(suggest, messages) {
+    if (suggest && Array.isArray(suggest)) {
+        suggest.forEach(suggestion => {
+            if (suggestion.messageId) {
+                const { messageId } = suggestion;
+
+                if (!messages) {
+                    throw new TypeError(`context.report() called with a suggest option with a messageId '${messageId}', but no messages were present in the rule metadata.`);
+                }
+
+                if (!messages[messageId]) {
+                    throw new TypeError(`context.report() called with a suggest option with a messageId '${messageId}' which is not present in the 'messages' config: ${JSON.stringify(messages, null, 2)}`);
+                }
+
+                if (suggestion.desc) {
+                    throw new TypeError("context.report() called with a suggest option that defines both a 'messageId' and an 'desc'. Please only pass one.");
+                }
+            } else if (!suggestion.desc) {
+                throw new TypeError("context.report() called with a suggest option that doesn't have either a `desc` or `messageId`");
+            }
+
+            if (typeof suggestion.fix !== "function") {
+                throw new TypeError(`context.report() called with a suggest option without a fix function. See: ${suggestion}`);
+            }
+        });
+    }
+}
+
+/**
+ * Returns a function that converts the arguments of a `context.report` call from a rule into a reported
+ * problem for the Node.js API.
+ * @param {{ruleId: string, severity: number, sourceCode: SourceCode, messageIds: Object, disableFixes: boolean}} metadata Metadata for the reported problem
+ * @param {SourceCode} sourceCode The `SourceCode` instance for the text being linted
+ * @returns {function(...args): LintMessage} Function that returns information about the report
+ */
+
+module.exports = function createReportTranslator(metadata) {
+
+    /*
+     * `createReportTranslator` gets called once per enabled rule per file. It needs to be very performant.
+     * The report translator itself (i.e. the function that `createReportTranslator` returns) gets
+     * called every time a rule reports a problem, which happens much less frequently (usually, the vast
+     * majority of rules don't report any problems for a given file).
+     */
+    return (...args) => {
+        const descriptor = normalizeMultiArgReportCall(...args);
+        const messages = metadata.messageIds;
+
+        assertValidNodeInfo(descriptor);
+
+        let computedMessage;
+
+        if (descriptor.messageId) {
+            if (!messages) {
+                throw new TypeError("context.report() called with a messageId, but no messages were present in the rule metadata.");
+            }
+            const id = descriptor.messageId;
+
+            if (descriptor.message) {
+                throw new TypeError("context.report() called with a message and a messageId. Please only pass one.");
+            }
+            if (!messages || !Object.prototype.hasOwnProperty.call(messages, id)) {
+                throw new TypeError(`context.report() called with a messageId of '${id}' which is not present in the 'messages' config: ${JSON.stringify(messages, null, 2)}`);
+            }
+            computedMessage = messages[id];
+        } else if (descriptor.message) {
+            computedMessage = descriptor.message;
+        } else {
+            throw new TypeError("Missing `message` property in report() call; add a message that describes the linting problem.");
+        }
+
+        validateSuggestions(descriptor.suggest, messages);
+
+        return createProblem({
+            ruleId: metadata.ruleId,
+            severity: metadata.severity,
+            node: descriptor.node,
+            message: interpolate(computedMessage, descriptor.data),
+            messageId: descriptor.messageId,
+            loc: normalizeReportLoc(descriptor),
+            fix: metadata.disableFixes ? null : normalizeFixes(descriptor, metadata.sourceCode),
+            suggestions: metadata.disableFixes ? [] : mapSuggestions(descriptor, metadata.sourceCode, messages)
+        });
+    };
+};
Index: frontend/node_modules/eslint/lib/linter/rule-fixer.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/rule-fixer.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/rule-fixer.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,140 @@
+/**
+ * @fileoverview An object that creates fix commands for rules.
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+// none!
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Creates a fix command that inserts text at the specified index in the source text.
+ * @param {int} index The 0-based index at which to insert the new text.
+ * @param {string} text The text to insert.
+ * @returns {Object} The fix command.
+ * @private
+ */
+function insertTextAt(index, text) {
+    return {
+        range: [index, index],
+        text
+    };
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * Creates code fixing commands for rules.
+ */
+
+const ruleFixer = Object.freeze({
+
+    /**
+     * Creates a fix command that inserts text after the given node or token.
+     * The fix is not applied until applyFixes() is called.
+     * @param {ASTNode|Token} nodeOrToken The node or token to insert after.
+     * @param {string} text The text to insert.
+     * @returns {Object} The fix command.
+     */
+    insertTextAfter(nodeOrToken, text) {
+        return this.insertTextAfterRange(nodeOrToken.range, text);
+    },
+
+    /**
+     * Creates a fix command that inserts text after the specified range in the source text.
+     * The fix is not applied until applyFixes() is called.
+     * @param {int[]} range The range to replace, first item is start of range, second
+     *      is end of range.
+     * @param {string} text The text to insert.
+     * @returns {Object} The fix command.
+     */
+    insertTextAfterRange(range, text) {
+        return insertTextAt(range[1], text);
+    },
+
+    /**
+     * Creates a fix command that inserts text before the given node or token.
+     * The fix is not applied until applyFixes() is called.
+     * @param {ASTNode|Token} nodeOrToken The node or token to insert before.
+     * @param {string} text The text to insert.
+     * @returns {Object} The fix command.
+     */
+    insertTextBefore(nodeOrToken, text) {
+        return this.insertTextBeforeRange(nodeOrToken.range, text);
+    },
+
+    /**
+     * Creates a fix command that inserts text before the specified range in the source text.
+     * The fix is not applied until applyFixes() is called.
+     * @param {int[]} range The range to replace, first item is start of range, second
+     *      is end of range.
+     * @param {string} text The text to insert.
+     * @returns {Object} The fix command.
+     */
+    insertTextBeforeRange(range, text) {
+        return insertTextAt(range[0], text);
+    },
+
+    /**
+     * Creates a fix command that replaces text at the node or token.
+     * The fix is not applied until applyFixes() is called.
+     * @param {ASTNode|Token} nodeOrToken The node or token to remove.
+     * @param {string} text The text to insert.
+     * @returns {Object} The fix command.
+     */
+    replaceText(nodeOrToken, text) {
+        return this.replaceTextRange(nodeOrToken.range, text);
+    },
+
+    /**
+     * Creates a fix command that replaces text at the specified range in the source text.
+     * The fix is not applied until applyFixes() is called.
+     * @param {int[]} range The range to replace, first item is start of range, second
+     *      is end of range.
+     * @param {string} text The text to insert.
+     * @returns {Object} The fix command.
+     */
+    replaceTextRange(range, text) {
+        return {
+            range,
+            text
+        };
+    },
+
+    /**
+     * Creates a fix command that removes the node or token from the source.
+     * The fix is not applied until applyFixes() is called.
+     * @param {ASTNode|Token} nodeOrToken The node or token to remove.
+     * @returns {Object} The fix command.
+     */
+    remove(nodeOrToken) {
+        return this.removeRange(nodeOrToken.range);
+    },
+
+    /**
+     * Creates a fix command that removes the specified range of text from the source.
+     * The fix is not applied until applyFixes() is called.
+     * @param {int[]} range The range to remove, first item is start of range, second
+     *      is end of range.
+     * @returns {Object} The fix command.
+     */
+    removeRange(range) {
+        return {
+            range,
+            text: ""
+        };
+    }
+
+});
+
+
+module.exports = ruleFixer;
Index: frontend/node_modules/eslint/lib/linter/rules.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/rules.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/rules.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,80 @@
+/**
+ * @fileoverview Defines a storage for rules.
+ * @author Nicholas C. Zakas
+ * @author aladdin-add
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const builtInRules = require("../rules");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Normalizes a rule module to the new-style API
+ * @param {(Function|{create: Function})} rule A rule object, which can either be a function
+ * ("old-style") or an object with a `create` method ("new-style")
+ * @returns {{create: Function}} A new-style rule.
+ */
+function normalizeRule(rule) {
+    return typeof rule === "function" ? Object.assign({ create: rule }, rule) : rule;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * A storage for rules.
+ */
+class Rules {
+    constructor() {
+        this._rules = Object.create(null);
+    }
+
+    /**
+     * Registers a rule module for rule id in storage.
+     * @param {string} ruleId Rule id (file name).
+     * @param {Function} ruleModule Rule handler.
+     * @returns {void}
+     */
+    define(ruleId, ruleModule) {
+        this._rules[ruleId] = normalizeRule(ruleModule);
+    }
+
+    /**
+     * Access rule handler by id (file name).
+     * @param {string} ruleId Rule id (file name).
+     * @returns {{create: Function, schema: JsonSchema[]}}
+     * A rule. This is normalized to always have the new-style shape with a `create` method.
+     */
+    get(ruleId) {
+        if (typeof this._rules[ruleId] === "string") {
+            this.define(ruleId, require(this._rules[ruleId]));
+        }
+        if (this._rules[ruleId]) {
+            return this._rules[ruleId];
+        }
+        if (builtInRules.has(ruleId)) {
+            return builtInRules.get(ruleId);
+        }
+
+        return null;
+    }
+
+    *[Symbol.iterator]() {
+        yield* builtInRules;
+
+        for (const ruleId of Object.keys(this._rules)) {
+            yield [ruleId, this.get(ruleId)];
+        }
+    }
+}
+
+module.exports = Rules;
Index: frontend/node_modules/eslint/lib/linter/safe-emitter.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/safe-emitter.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/safe-emitter.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,52 @@
+/**
+ * @fileoverview A variant of EventEmitter which does not give listeners information about each other
+ * @author Teddy Katz
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/**
+ * An event emitter
+ * @typedef {Object} SafeEmitter
+ * @property {(eventName: string, listenerFunc: Function) => void} on Adds a listener for a given event name
+ * @property {(eventName: string, arg1?: any, arg2?: any, arg3?: any) => void} emit Emits an event with a given name.
+ * This calls all the listeners that were listening for that name, with `arg1`, `arg2`, and `arg3` as arguments.
+ * @property {function(): string[]} eventNames Gets the list of event names that have registered listeners.
+ */
+
+/**
+ * Creates an object which can listen for and emit events.
+ * This is similar to the EventEmitter API in Node's standard library, but it has a few differences.
+ * The goal is to allow multiple modules to attach arbitrary listeners to the same emitter, without
+ * letting the modules know about each other at all.
+ * 1. It has no special keys like `error` and `newListener`, which would allow modules to detect when
+ * another module throws an error or registers a listener.
+ * 2. It calls listener functions without any `this` value. (`EventEmitter` calls listeners with a
+ * `this` value of the emitter instance, which would give listeners access to other listeners.)
+ * @returns {SafeEmitter} An emitter
+ */
+module.exports = () => {
+    const listeners = Object.create(null);
+
+    return Object.freeze({
+        on(eventName, listener) {
+            if (eventName in listeners) {
+                listeners[eventName].push(listener);
+            } else {
+                listeners[eventName] = [listener];
+            }
+        },
+        emit(eventName, ...args) {
+            if (eventName in listeners) {
+                listeners[eventName].forEach(listener => listener(...args));
+            }
+        },
+        eventNames() {
+            return Object.keys(listeners);
+        }
+    });
+};
Index: frontend/node_modules/eslint/lib/linter/source-code-fixer.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/source-code-fixer.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/source-code-fixer.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,152 @@
+/**
+ * @fileoverview An object that caches and applies source code fixes.
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const debug = require("debug")("eslint:source-code-fixer");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const BOM = "\uFEFF";
+
+/**
+ * Compares items in a messages array by range.
+ * @param {Message} a The first message.
+ * @param {Message} b The second message.
+ * @returns {int} -1 if a comes before b, 1 if a comes after b, 0 if equal.
+ * @private
+ */
+function compareMessagesByFixRange(a, b) {
+    return a.fix.range[0] - b.fix.range[0] || a.fix.range[1] - b.fix.range[1];
+}
+
+/**
+ * Compares items in a messages array by line and column.
+ * @param {Message} a The first message.
+ * @param {Message} b The second message.
+ * @returns {int} -1 if a comes before b, 1 if a comes after b, 0 if equal.
+ * @private
+ */
+function compareMessagesByLocation(a, b) {
+    return a.line - b.line || a.column - b.column;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * Utility for apply fixes to source code.
+ * @constructor
+ */
+function SourceCodeFixer() {
+    Object.freeze(this);
+}
+
+/**
+ * Applies the fixes specified by the messages to the given text. Tries to be
+ * smart about the fixes and won't apply fixes over the same area in the text.
+ * @param {string} sourceText The text to apply the changes to.
+ * @param {Message[]} messages The array of messages reported by ESLint.
+ * @param {boolean|Function} [shouldFix=true] Determines whether each message should be fixed
+ * @returns {Object} An object containing the fixed text and any unfixed messages.
+ */
+SourceCodeFixer.applyFixes = function(sourceText, messages, shouldFix) {
+    debug("Applying fixes");
+
+    if (shouldFix === false) {
+        debug("shouldFix parameter was false, not attempting fixes");
+        return {
+            fixed: false,
+            messages,
+            output: sourceText
+        };
+    }
+
+    // clone the array
+    const remainingMessages = [],
+        fixes = [],
+        bom = sourceText.startsWith(BOM) ? BOM : "",
+        text = bom ? sourceText.slice(1) : sourceText;
+    let lastPos = Number.NEGATIVE_INFINITY,
+        output = bom;
+
+    /**
+     * Try to use the 'fix' from a problem.
+     * @param {Message} problem The message object to apply fixes from
+     * @returns {boolean} Whether fix was successfully applied
+     */
+    function attemptFix(problem) {
+        const fix = problem.fix;
+        const start = fix.range[0];
+        const end = fix.range[1];
+
+        // Remain it as a problem if it's overlapped or it's a negative range
+        if (lastPos >= start || start > end) {
+            remainingMessages.push(problem);
+            return false;
+        }
+
+        // Remove BOM.
+        if ((start < 0 && end >= 0) || (start === 0 && fix.text.startsWith(BOM))) {
+            output = "";
+        }
+
+        // Make output to this fix.
+        output += text.slice(Math.max(0, lastPos), Math.max(0, start));
+        output += fix.text;
+        lastPos = end;
+        return true;
+    }
+
+    messages.forEach(problem => {
+        if (Object.prototype.hasOwnProperty.call(problem, "fix")) {
+            fixes.push(problem);
+        } else {
+            remainingMessages.push(problem);
+        }
+    });
+
+    if (fixes.length) {
+        debug("Found fixes to apply");
+        let fixesWereApplied = false;
+
+        for (const problem of fixes.sort(compareMessagesByFixRange)) {
+            if (typeof shouldFix !== "function" || shouldFix(problem)) {
+                attemptFix(problem);
+
+                /*
+                 * The only time attemptFix will fail is if a previous fix was
+                 * applied which conflicts with it.  So we can mark this as true.
+                 */
+                fixesWereApplied = true;
+            } else {
+                remainingMessages.push(problem);
+            }
+        }
+        output += text.slice(Math.max(0, lastPos));
+
+        return {
+            fixed: fixesWereApplied,
+            messages: remainingMessages.sort(compareMessagesByLocation),
+            output
+        };
+    }
+
+    debug("No fixes to apply");
+    return {
+        fixed: false,
+        messages,
+        output: bom + text
+    };
+
+};
+
+module.exports = SourceCodeFixer;
Index: frontend/node_modules/eslint/lib/linter/timing.js
===================================================================
--- frontend/node_modules/eslint/lib/linter/timing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/linter/timing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,161 @@
+/**
+ * @fileoverview Tracks performance of individual rules.
+ * @author Brandon Mills
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/* c8 ignore next */
+/**
+ * Align the string to left
+ * @param {string} str string to evaluate
+ * @param {int} len length of the string
+ * @param {string} ch delimiter character
+ * @returns {string} modified string
+ * @private
+ */
+function alignLeft(str, len, ch) {
+    return str + new Array(len - str.length + 1).join(ch || " ");
+}
+
+/* c8 ignore next */
+/**
+ * Align the string to right
+ * @param {string} str string to evaluate
+ * @param {int} len length of the string
+ * @param {string} ch delimiter character
+ * @returns {string} modified string
+ * @private
+ */
+function alignRight(str, len, ch) {
+    return new Array(len - str.length + 1).join(ch || " ") + str;
+}
+
+//------------------------------------------------------------------------------
+// Module definition
+//------------------------------------------------------------------------------
+
+const enabled = !!process.env.TIMING;
+
+const HEADERS = ["Rule", "Time (ms)", "Relative"];
+const ALIGN = [alignLeft, alignRight, alignRight];
+
+/**
+ * Decide how many rules to show in the output list.
+ * @returns {number} the number of rules to show
+ */
+function getListSize() {
+    const MINIMUM_SIZE = 10;
+
+    if (typeof process.env.TIMING !== "string") {
+        return MINIMUM_SIZE;
+    }
+
+    if (process.env.TIMING.toLowerCase() === "all") {
+        return Number.POSITIVE_INFINITY;
+    }
+
+    const TIMING_ENV_VAR_AS_INTEGER = Number.parseInt(process.env.TIMING, 10);
+
+    return TIMING_ENV_VAR_AS_INTEGER > 10 ? TIMING_ENV_VAR_AS_INTEGER : MINIMUM_SIZE;
+}
+
+/* c8 ignore next */
+/**
+ * display the data
+ * @param {Object} data Data object to be displayed
+ * @returns {void} prints modified string with console.log
+ * @private
+ */
+function display(data) {
+    let total = 0;
+    const rows = Object.keys(data)
+        .map(key => {
+            const time = data[key];
+
+            total += time;
+            return [key, time];
+        })
+        .sort((a, b) => b[1] - a[1])
+        .slice(0, getListSize());
+
+    rows.forEach(row => {
+        row.push(`${(row[1] * 100 / total).toFixed(1)}%`);
+        row[1] = row[1].toFixed(3);
+    });
+
+    rows.unshift(HEADERS);
+
+    const widths = [];
+
+    rows.forEach(row => {
+        const len = row.length;
+
+        for (let i = 0; i < len; i++) {
+            const n = row[i].length;
+
+            if (!widths[i] || n > widths[i]) {
+                widths[i] = n;
+            }
+        }
+    });
+
+    const table = rows.map(row => (
+        row
+            .map((cell, index) => ALIGN[index](cell, widths[index]))
+            .join(" | ")
+    ));
+
+    table.splice(1, 0, widths.map((width, index) => {
+        const extraAlignment = index !== 0 && index !== widths.length - 1 ? 2 : 1;
+
+        return ALIGN[index](":", width + extraAlignment, "-");
+    }).join("|"));
+
+    console.log(table.join("\n")); // eslint-disable-line no-console -- Debugging function
+}
+
+/* c8 ignore next */
+module.exports = (function() {
+
+    const data = Object.create(null);
+
+    /**
+     * Time the run
+     * @param {any} key key from the data object
+     * @param {Function} fn function to be called
+     * @returns {Function} function to be executed
+     * @private
+     */
+    function time(key, fn) {
+        if (typeof data[key] === "undefined") {
+            data[key] = 0;
+        }
+
+        return function(...args) {
+            let t = process.hrtime();
+            const result = fn(...args);
+
+            t = process.hrtime(t);
+            data[key] += t[0] * 1e3 + t[1] / 1e6;
+            return result;
+        };
+    }
+
+    if (enabled) {
+        process.on("exit", () => {
+            display(data);
+        });
+    }
+
+    return {
+        time,
+        enabled,
+        getListSize
+    };
+
+}());
Index: frontend/node_modules/eslint/lib/options.js
===================================================================
--- frontend/node_modules/eslint/lib/options.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/options.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,398 @@
+/**
+ * @fileoverview Options configuration for optionator.
+ * @author George Zahariev
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const optionator = require("optionator");
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/**
+ * The options object parsed by Optionator.
+ * @typedef {Object} ParsedCLIOptions
+ * @property {boolean} cache Only check changed files
+ * @property {string} cacheFile Path to the cache file. Deprecated: use --cache-location
+ * @property {string} [cacheLocation] Path to the cache file or directory
+ * @property {"metadata" | "content"} cacheStrategy Strategy to use for detecting changed files in the cache
+ * @property {boolean} [color] Force enabling/disabling of color
+ * @property {string} [config] Use this configuration, overriding .eslintrc.* config options if present
+ * @property {boolean} debug Output debugging information
+ * @property {string[]} [env] Specify environments
+ * @property {boolean} envInfo Output execution environment information
+ * @property {boolean} errorOnUnmatchedPattern Prevent errors when pattern is unmatched
+ * @property {boolean} eslintrc Disable use of configuration from .eslintrc.*
+ * @property {string[]} [ext] Specify JavaScript file extensions
+ * @property {boolean} fix Automatically fix problems
+ * @property {boolean} fixDryRun Automatically fix problems without saving the changes to the file system
+ * @property {("directive" | "problem" | "suggestion" | "layout")[]} [fixType] Specify the types of fixes to apply (directive, problem, suggestion, layout)
+ * @property {string} format Use a specific output format
+ * @property {string[]} [global] Define global variables
+ * @property {boolean} [help] Show help
+ * @property {boolean} ignore Disable use of ignore files and patterns
+ * @property {string} [ignorePath] Specify path of ignore file
+ * @property {string[]} [ignorePattern] Pattern of files to ignore (in addition to those in .eslintignore)
+ * @property {boolean} init Run config initialization wizard
+ * @property {boolean} inlineConfig Prevent comments from changing config or rules
+ * @property {number} maxWarnings Number of warnings to trigger nonzero exit code
+ * @property {string} [outputFile] Specify file to write report to
+ * @property {string} [parser] Specify the parser to be used
+ * @property {Object} [parserOptions] Specify parser options
+ * @property {string[]} [plugin] Specify plugins
+ * @property {string} [printConfig] Print the configuration for the given file
+ * @property {boolean | undefined} reportUnusedDisableDirectives Adds reported errors for unused eslint-disable and eslint-enable directives
+ * @property {string | undefined} reportUnusedDisableDirectivesSeverity A severity string indicating if and how unused disable and enable directives should be tracked and reported.
+ * @property {string} [resolvePluginsRelativeTo] A folder where plugins should be resolved from, CWD by default
+ * @property {Object} [rule] Specify rules
+ * @property {string[]} [rulesdir] Load additional rules from this directory. Deprecated: Use rules from plugins
+ * @property {boolean} stdin Lint code provided on <STDIN>
+ * @property {string} [stdinFilename] Specify filename to process STDIN as
+ * @property {boolean} quiet Report errors only
+ * @property {boolean} [version] Output the version number
+ * @property {boolean} warnIgnored Show warnings when the file list includes ignored files
+ * @property {string[]} _ Positional filenames or patterns
+ */
+
+//------------------------------------------------------------------------------
+// Initialization and Public Interface
+//------------------------------------------------------------------------------
+
+// exports "parse(args)", "generateHelp()", and "generateHelpForOption(optionName)"
+
+/**
+ * Creates the CLI options for ESLint.
+ * @param {boolean} usingFlatConfig Indicates if flat config is being used.
+ * @returns {Object} The optionator instance.
+ */
+module.exports = function(usingFlatConfig) {
+
+    let lookupFlag;
+
+    if (usingFlatConfig) {
+        lookupFlag = {
+            option: "config-lookup",
+            type: "Boolean",
+            default: "true",
+            description: "Disable look up for eslint.config.js"
+        };
+    } else {
+        lookupFlag = {
+            option: "eslintrc",
+            type: "Boolean",
+            default: "true",
+            description: "Disable use of configuration from .eslintrc.*"
+        };
+    }
+
+    let envFlag;
+
+    if (!usingFlatConfig) {
+        envFlag = {
+            option: "env",
+            type: "[String]",
+            description: "Specify environments"
+        };
+    }
+
+    let extFlag;
+
+    if (!usingFlatConfig) {
+        extFlag = {
+            option: "ext",
+            type: "[String]",
+            description: "Specify JavaScript file extensions"
+        };
+    }
+
+    let resolvePluginsFlag;
+
+    if (!usingFlatConfig) {
+        resolvePluginsFlag = {
+            option: "resolve-plugins-relative-to",
+            type: "path::String",
+            description: "A folder where plugins should be resolved from, CWD by default"
+        };
+    }
+
+    let rulesDirFlag;
+
+    if (!usingFlatConfig) {
+        rulesDirFlag = {
+            option: "rulesdir",
+            type: "[path::String]",
+            description: "Load additional rules from this directory. Deprecated: Use rules from plugins"
+        };
+    }
+
+    let ignorePathFlag;
+
+    if (!usingFlatConfig) {
+        ignorePathFlag = {
+            option: "ignore-path",
+            type: "path::String",
+            description: "Specify path of ignore file"
+        };
+    }
+
+    let warnIgnoredFlag;
+
+    if (usingFlatConfig) {
+        warnIgnoredFlag = {
+            option: "warn-ignored",
+            type: "Boolean",
+            default: "true",
+            description: "Suppress warnings when the file list includes ignored files"
+        };
+    }
+
+    return optionator({
+        prepend: "eslint [options] file.js [file.js] [dir]",
+        defaults: {
+            concatRepeatedArrays: true,
+            mergeRepeatedObjects: true
+        },
+        options: [
+            {
+                heading: "Basic configuration"
+            },
+            lookupFlag,
+            {
+                option: "config",
+                alias: "c",
+                type: "path::String",
+                description: usingFlatConfig
+                    ? "Use this configuration instead of eslint.config.js, eslint.config.mjs, or eslint.config.cjs"
+                    : "Use this configuration, overriding .eslintrc.* config options if present"
+            },
+            envFlag,
+            extFlag,
+            {
+                option: "global",
+                type: "[String]",
+                description: "Define global variables"
+            },
+            {
+                option: "parser",
+                type: "String",
+                description: "Specify the parser to be used"
+            },
+            {
+                option: "parser-options",
+                type: "Object",
+                description: "Specify parser options"
+            },
+            resolvePluginsFlag,
+            {
+                heading: "Specify Rules and Plugins"
+            },
+            {
+                option: "plugin",
+                type: "[String]",
+                description: "Specify plugins"
+            },
+            {
+                option: "rule",
+                type: "Object",
+                description: "Specify rules"
+            },
+            rulesDirFlag,
+            {
+                heading: "Fix Problems"
+            },
+            {
+                option: "fix",
+                type: "Boolean",
+                default: false,
+                description: "Automatically fix problems"
+            },
+            {
+                option: "fix-dry-run",
+                type: "Boolean",
+                default: false,
+                description: "Automatically fix problems without saving the changes to the file system"
+            },
+            {
+                option: "fix-type",
+                type: "Array",
+                description: "Specify the types of fixes to apply (directive, problem, suggestion, layout)"
+            },
+            {
+                heading: "Ignore Files"
+            },
+            ignorePathFlag,
+            {
+                option: "ignore",
+                type: "Boolean",
+                default: "true",
+                description: "Disable use of ignore files and patterns"
+            },
+            {
+                option: "ignore-pattern",
+                type: "[String]",
+                description: "Pattern of files to ignore (in addition to those in .eslintignore)",
+                concatRepeatedArrays: [true, {
+                    oneValuePerFlag: true
+                }]
+            },
+            {
+                heading: "Use stdin"
+            },
+            {
+                option: "stdin",
+                type: "Boolean",
+                default: "false",
+                description: "Lint code provided on <STDIN>"
+            },
+            {
+                option: "stdin-filename",
+                type: "String",
+                description: "Specify filename to process STDIN as"
+            },
+            {
+                heading: "Handle Warnings"
+            },
+            {
+                option: "quiet",
+                type: "Boolean",
+                default: "false",
+                description: "Report errors only"
+            },
+            {
+                option: "max-warnings",
+                type: "Int",
+                default: "-1",
+                description: "Number of warnings to trigger nonzero exit code"
+            },
+            {
+                heading: "Output"
+            },
+            {
+                option: "output-file",
+                alias: "o",
+                type: "path::String",
+                description: "Specify file to write report to"
+            },
+            {
+                option: "format",
+                alias: "f",
+                type: "String",
+                default: "stylish",
+                description: "Use a specific output format"
+            },
+            {
+                option: "color",
+                type: "Boolean",
+                alias: "no-color",
+                description: "Force enabling/disabling of color"
+            },
+            {
+                heading: "Inline configuration comments"
+            },
+            {
+                option: "inline-config",
+                type: "Boolean",
+                default: "true",
+                description: "Prevent comments from changing config or rules"
+            },
+            {
+                option: "report-unused-disable-directives",
+                type: "Boolean",
+                default: void 0,
+                description: "Adds reported errors for unused eslint-disable and eslint-enable directives"
+            },
+            {
+                option: "report-unused-disable-directives-severity",
+                type: "String",
+                default: void 0,
+                description: "Chooses severity level for reporting unused eslint-disable and eslint-enable directives",
+                enum: ["off", "warn", "error", "0", "1", "2"]
+            },
+            {
+                heading: "Caching"
+            },
+            {
+                option: "cache",
+                type: "Boolean",
+                default: "false",
+                description: "Only check changed files"
+            },
+            {
+                option: "cache-file",
+                type: "path::String",
+                default: ".eslintcache",
+                description: "Path to the cache file. Deprecated: use --cache-location"
+            },
+            {
+                option: "cache-location",
+                type: "path::String",
+                description: "Path to the cache file or directory"
+            },
+            {
+                option: "cache-strategy",
+                dependsOn: ["cache"],
+                type: "String",
+                default: "metadata",
+                enum: ["metadata", "content"],
+                description: "Strategy to use for detecting changed files in the cache"
+            },
+            {
+                heading: "Miscellaneous"
+            },
+            {
+                option: "init",
+                type: "Boolean",
+                default: "false",
+                description: "Run config initialization wizard"
+            },
+            {
+                option: "env-info",
+                type: "Boolean",
+                default: "false",
+                description: "Output execution environment information"
+            },
+            {
+                option: "error-on-unmatched-pattern",
+                type: "Boolean",
+                default: "true",
+                description: "Prevent errors when pattern is unmatched"
+            },
+            {
+                option: "exit-on-fatal-error",
+                type: "Boolean",
+                default: "false",
+                description: "Exit with exit code 2 in case of fatal error"
+            },
+            warnIgnoredFlag,
+            {
+                option: "debug",
+                type: "Boolean",
+                default: false,
+                description: "Output debugging information"
+            },
+            {
+                option: "help",
+                alias: "h",
+                type: "Boolean",
+                description: "Show help"
+            },
+            {
+                option: "version",
+                alias: "v",
+                type: "Boolean",
+                description: "Output the version number"
+            },
+            {
+                option: "print-config",
+                type: "path::String",
+                description: "Print the configuration for the given file"
+            }
+        ].filter(value => !!value)
+    });
+};
Index: frontend/node_modules/eslint/lib/rule-tester/flat-rule-tester.js
===================================================================
--- frontend/node_modules/eslint/lib/rule-tester/flat-rule-tester.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rule-tester/flat-rule-tester.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,1131 @@
+/**
+ * @fileoverview Mocha/Jest test wrapper
+ * @author Ilya Volodin
+ */
+"use strict";
+
+/* globals describe, it -- Mocha globals */
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const
+    assert = require("assert"),
+    util = require("util"),
+    path = require("path"),
+    equal = require("fast-deep-equal"),
+    Traverser = require("../shared/traverser"),
+    { getRuleOptionsSchema } = require("../config/flat-config-helpers"),
+    { Linter, SourceCodeFixer, interpolate } = require("../linter"),
+    CodePath = require("../linter/code-path-analysis/code-path");
+
+const { FlatConfigArray } = require("../config/flat-config-array");
+const { defaultConfig } = require("../config/default-config");
+
+const ajv = require("../shared/ajv")({ strictDefaults: true });
+
+const parserSymbol = Symbol.for("eslint.RuleTester.parser");
+const { SourceCode } = require("../source-code");
+const { ConfigArraySymbol } = require("@humanwhocodes/config-array");
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/** @typedef {import("../shared/types").Parser} Parser */
+/** @typedef {import("../shared/types").LanguageOptions} LanguageOptions */
+/** @typedef {import("../shared/types").Rule} Rule */
+
+
+/**
+ * A test case that is expected to pass lint.
+ * @typedef {Object} ValidTestCase
+ * @property {string} [name] Name for the test case.
+ * @property {string} code Code for the test case.
+ * @property {any[]} [options] Options for the test case.
+ * @property {LanguageOptions} [languageOptions] The language options to use in the test case.
+ * @property {{ [name: string]: any }} [settings] Settings for the test case.
+ * @property {string} [filename] The fake filename for the test case. Useful for rules that make assertion about filenames.
+ * @property {boolean} [only] Run only this test case or the subset of test cases with this property.
+ */
+
+/**
+ * A test case that is expected to fail lint.
+ * @typedef {Object} InvalidTestCase
+ * @property {string} [name] Name for the test case.
+ * @property {string} code Code for the test case.
+ * @property {number | Array<TestCaseError | string | RegExp>} errors Expected errors.
+ * @property {string | null} [output] The expected code after autofixes are applied. If set to `null`, the test runner will assert that no autofix is suggested.
+ * @property {any[]} [options] Options for the test case.
+ * @property {{ [name: string]: any }} [settings] Settings for the test case.
+ * @property {string} [filename] The fake filename for the test case. Useful for rules that make assertion about filenames.
+ * @property {LanguageOptions} [languageOptions] The language options to use in the test case.
+ * @property {boolean} [only] Run only this test case or the subset of test cases with this property.
+ */
+
+/**
+ * A description of a reported error used in a rule tester test.
+ * @typedef {Object} TestCaseError
+ * @property {string | RegExp} [message] Message.
+ * @property {string} [messageId] Message ID.
+ * @property {string} [type] The type of the reported AST node.
+ * @property {{ [name: string]: string }} [data] The data used to fill the message template.
+ * @property {number} [line] The 1-based line number of the reported start location.
+ * @property {number} [column] The 1-based column number of the reported start location.
+ * @property {number} [endLine] The 1-based line number of the reported end location.
+ * @property {number} [endColumn] The 1-based column number of the reported end location.
+ */
+
+//------------------------------------------------------------------------------
+// Private Members
+//------------------------------------------------------------------------------
+
+/*
+ * testerDefaultConfig must not be modified as it allows to reset the tester to
+ * the initial default configuration
+ */
+const testerDefaultConfig = { rules: {} };
+
+/*
+ * RuleTester uses this config as its default. This can be overwritten via
+ * setDefaultConfig().
+ */
+let sharedDefaultConfig = { rules: {} };
+
+/*
+ * List every parameters possible on a test case that are not related to eslint
+ * configuration
+ */
+const RuleTesterParameters = [
+    "name",
+    "code",
+    "filename",
+    "options",
+    "errors",
+    "output",
+    "only"
+];
+
+/*
+ * All allowed property names in error objects.
+ */
+const errorObjectParameters = new Set([
+    "message",
+    "messageId",
+    "data",
+    "type",
+    "line",
+    "column",
+    "endLine",
+    "endColumn",
+    "suggestions"
+]);
+const friendlyErrorObjectParameterList = `[${[...errorObjectParameters].map(key => `'${key}'`).join(", ")}]`;
+
+/*
+ * All allowed property names in suggestion objects.
+ */
+const suggestionObjectParameters = new Set([
+    "desc",
+    "messageId",
+    "data",
+    "output"
+]);
+const friendlySuggestionObjectParameterList = `[${[...suggestionObjectParameters].map(key => `'${key}'`).join(", ")}]`;
+
+const forbiddenMethods = [
+    "applyInlineConfig",
+    "applyLanguageOptions",
+    "finalize"
+];
+
+/** @type {Map<string,WeakSet>} */
+const forbiddenMethodCalls = new Map(forbiddenMethods.map(methodName => ([methodName, new WeakSet()])));
+
+const hasOwnProperty = Function.call.bind(Object.hasOwnProperty);
+
+/**
+ * Clones a given value deeply.
+ * Note: This ignores `parent` property.
+ * @param {any} x A value to clone.
+ * @returns {any} A cloned value.
+ */
+function cloneDeeplyExcludesParent(x) {
+    if (typeof x === "object" && x !== null) {
+        if (Array.isArray(x)) {
+            return x.map(cloneDeeplyExcludesParent);
+        }
+
+        const retv = {};
+
+        for (const key in x) {
+            if (key !== "parent" && hasOwnProperty(x, key)) {
+                retv[key] = cloneDeeplyExcludesParent(x[key]);
+            }
+        }
+
+        return retv;
+    }
+
+    return x;
+}
+
+/**
+ * Freezes a given value deeply.
+ * @param {any} x A value to freeze.
+ * @returns {void}
+ */
+function freezeDeeply(x) {
+    if (typeof x === "object" && x !== null) {
+        if (Array.isArray(x)) {
+            x.forEach(freezeDeeply);
+        } else {
+            for (const key in x) {
+                if (key !== "parent" && hasOwnProperty(x, key)) {
+                    freezeDeeply(x[key]);
+                }
+            }
+        }
+        Object.freeze(x);
+    }
+}
+
+/**
+ * Replace control characters by `\u00xx` form.
+ * @param {string} text The text to sanitize.
+ * @returns {string} The sanitized text.
+ */
+function sanitize(text) {
+    if (typeof text !== "string") {
+        return "";
+    }
+    return text.replace(
+        /[\u0000-\u0009\u000b-\u001a]/gu, // eslint-disable-line no-control-regex -- Escaping controls
+        c => `\\u${c.codePointAt(0).toString(16).padStart(4, "0")}`
+    );
+}
+
+/**
+ * Define `start`/`end` properties as throwing error.
+ * @param {string} objName Object name used for error messages.
+ * @param {ASTNode} node The node to define.
+ * @returns {void}
+ */
+function defineStartEndAsError(objName, node) {
+    Object.defineProperties(node, {
+        start: {
+            get() {
+                throw new Error(`Use ${objName}.range[0] instead of ${objName}.start`);
+            },
+            configurable: true,
+            enumerable: false
+        },
+        end: {
+            get() {
+                throw new Error(`Use ${objName}.range[1] instead of ${objName}.end`);
+            },
+            configurable: true,
+            enumerable: false
+        }
+    });
+}
+
+
+/**
+ * Define `start`/`end` properties of all nodes of the given AST as throwing error.
+ * @param {ASTNode} ast The root node to errorize `start`/`end` properties.
+ * @param {Object} [visitorKeys] Visitor keys to be used for traversing the given ast.
+ * @returns {void}
+ */
+function defineStartEndAsErrorInTree(ast, visitorKeys) {
+    Traverser.traverse(ast, { visitorKeys, enter: defineStartEndAsError.bind(null, "node") });
+    ast.tokens.forEach(defineStartEndAsError.bind(null, "token"));
+    ast.comments.forEach(defineStartEndAsError.bind(null, "token"));
+}
+
+/**
+ * Wraps the given parser in order to intercept and modify return values from the `parse` and `parseForESLint` methods, for test purposes.
+ * In particular, to modify ast nodes, tokens and comments to throw on access to their `start` and `end` properties.
+ * @param {Parser} parser Parser object.
+ * @returns {Parser} Wrapped parser object.
+ */
+function wrapParser(parser) {
+
+    if (typeof parser.parseForESLint === "function") {
+        return {
+            [parserSymbol]: parser,
+            parseForESLint(...args) {
+                const ret = parser.parseForESLint(...args);
+
+                defineStartEndAsErrorInTree(ret.ast, ret.visitorKeys);
+                return ret;
+            }
+        };
+    }
+
+    return {
+        [parserSymbol]: parser,
+        parse(...args) {
+            const ast = parser.parse(...args);
+
+            defineStartEndAsErrorInTree(ast);
+            return ast;
+        }
+    };
+}
+
+/**
+ * Function to replace `SourceCode.prototype.getComments`.
+ * @returns {void}
+ * @throws {Error} Deprecation message.
+ */
+function getCommentsDeprecation() {
+    throw new Error(
+        "`SourceCode#getComments()` is deprecated and will be removed in a future major version. Use `getCommentsBefore()`, `getCommentsAfter()`, and `getCommentsInside()` instead."
+    );
+}
+
+/**
+ * Emit a deprecation warning if rule uses CodePath#currentSegments.
+ * @param {string} ruleName Name of the rule.
+ * @returns {void}
+ */
+function emitCodePathCurrentSegmentsWarning(ruleName) {
+    if (!emitCodePathCurrentSegmentsWarning[`warned-${ruleName}`]) {
+        emitCodePathCurrentSegmentsWarning[`warned-${ruleName}`] = true;
+        process.emitWarning(
+            `"${ruleName}" rule uses CodePath#currentSegments and will stop working in ESLint v9. Please read the documentation for how to update your code: https://eslint.org/docs/latest/extend/code-path-analysis#usage-examples`,
+            "DeprecationWarning"
+        );
+    }
+}
+
+/**
+ * Function to replace forbidden `SourceCode` methods. Allows just one call per method.
+ * @param {string} methodName The name of the method to forbid.
+ * @param {Function} prototype The prototype with the original method to call.
+ * @returns {Function} The function that throws the error.
+ */
+function throwForbiddenMethodError(methodName, prototype) {
+
+    const original = prototype[methodName];
+
+    return function(...args) {
+
+        const called = forbiddenMethodCalls.get(methodName);
+
+        /* eslint-disable no-invalid-this -- needed to operate as a method. */
+        if (!called.has(this)) {
+            called.add(this);
+
+            return original.apply(this, args);
+        }
+        /* eslint-enable no-invalid-this -- not needed past this point */
+
+        throw new Error(
+            `\`SourceCode#${methodName}()\` cannot be called inside a rule.`
+        );
+    };
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+// default separators for testing
+const DESCRIBE = Symbol("describe");
+const IT = Symbol("it");
+const IT_ONLY = Symbol("itOnly");
+
+/**
+ * This is `it` default handler if `it` don't exist.
+ * @this {Mocha}
+ * @param {string} text The description of the test case.
+ * @param {Function} method The logic of the test case.
+ * @throws {Error} Any error upon execution of `method`.
+ * @returns {any} Returned value of `method`.
+ */
+function itDefaultHandler(text, method) {
+    try {
+        return method.call(this);
+    } catch (err) {
+        if (err instanceof assert.AssertionError) {
+            err.message += ` (${util.inspect(err.actual)} ${err.operator} ${util.inspect(err.expected)})`;
+        }
+        throw err;
+    }
+}
+
+/**
+ * This is `describe` default handler if `describe` don't exist.
+ * @this {Mocha}
+ * @param {string} text The description of the test case.
+ * @param {Function} method The logic of the test case.
+ * @returns {any} Returned value of `method`.
+ */
+function describeDefaultHandler(text, method) {
+    return method.call(this);
+}
+
+/**
+ * Mocha test wrapper.
+ */
+class FlatRuleTester {
+
+    /**
+     * Creates a new instance of RuleTester.
+     * @param {Object} [testerConfig] Optional, extra configuration for the tester
+     */
+    constructor(testerConfig = {}) {
+
+        /**
+         * The configuration to use for this tester. Combination of the tester
+         * configuration and the default configuration.
+         * @type {Object}
+         */
+        this.testerConfig = [
+            sharedDefaultConfig,
+            testerConfig,
+            { rules: { "rule-tester/validate-ast": "error" } }
+        ];
+
+        this.linter = new Linter({ configType: "flat" });
+    }
+
+    /**
+     * Set the configuration to use for all future tests
+     * @param {Object} config the configuration to use.
+     * @throws {TypeError} If non-object config.
+     * @returns {void}
+     */
+    static setDefaultConfig(config) {
+        if (typeof config !== "object" || config === null) {
+            throw new TypeError("FlatRuleTester.setDefaultConfig: config must be an object");
+        }
+        sharedDefaultConfig = config;
+
+        // Make sure the rules object exists since it is assumed to exist later
+        sharedDefaultConfig.rules = sharedDefaultConfig.rules || {};
+    }
+
+    /**
+     * Get the current configuration used for all tests
+     * @returns {Object} the current configuration
+     */
+    static getDefaultConfig() {
+        return sharedDefaultConfig;
+    }
+
+    /**
+     * Reset the configuration to the initial configuration of the tester removing
+     * any changes made until now.
+     * @returns {void}
+     */
+    static resetDefaultConfig() {
+        sharedDefaultConfig = {
+            rules: {
+                ...testerDefaultConfig.rules
+            }
+        };
+    }
+
+
+    /*
+     * If people use `mocha test.js --watch` command, `describe` and `it` function
+     * instances are different for each execution. So `describe` and `it` should get fresh instance
+     * always.
+     */
+    static get describe() {
+        return (
+            this[DESCRIBE] ||
+            (typeof describe === "function" ? describe : describeDefaultHandler)
+        );
+    }
+
+    static set describe(value) {
+        this[DESCRIBE] = value;
+    }
+
+    static get it() {
+        return (
+            this[IT] ||
+            (typeof it === "function" ? it : itDefaultHandler)
+        );
+    }
+
+    static set it(value) {
+        this[IT] = value;
+    }
+
+    /**
+     * Adds the `only` property to a test to run it in isolation.
+     * @param {string | ValidTestCase | InvalidTestCase} item A single test to run by itself.
+     * @returns {ValidTestCase | InvalidTestCase} The test with `only` set.
+     */
+    static only(item) {
+        if (typeof item === "string") {
+            return { code: item, only: true };
+        }
+
+        return { ...item, only: true };
+    }
+
+    static get itOnly() {
+        if (typeof this[IT_ONLY] === "function") {
+            return this[IT_ONLY];
+        }
+        if (typeof this[IT] === "function" && typeof this[IT].only === "function") {
+            return Function.bind.call(this[IT].only, this[IT]);
+        }
+        if (typeof it === "function" && typeof it.only === "function") {
+            return Function.bind.call(it.only, it);
+        }
+
+        if (typeof this[DESCRIBE] === "function" || typeof this[IT] === "function") {
+            throw new Error(
+                "Set `RuleTester.itOnly` to use `only` with a custom test framework.\n" +
+                "See https://eslint.org/docs/latest/integrate/nodejs-api#customizing-ruletester for more."
+            );
+        }
+        if (typeof it === "function") {
+            throw new Error("The current test framework does not support exclusive tests with `only`.");
+        }
+        throw new Error("To use `only`, use RuleTester with a test framework that provides `it.only()` like Mocha.");
+    }
+
+    static set itOnly(value) {
+        this[IT_ONLY] = value;
+    }
+
+
+    /**
+     * Adds a new rule test to execute.
+     * @param {string} ruleName The name of the rule to run.
+     * @param {Function | Rule} rule The rule to test.
+     * @param {{
+     *   valid: (ValidTestCase | string)[],
+     *   invalid: InvalidTestCase[]
+     * }} test The collection of tests to run.
+     * @throws {TypeError|Error} If non-object `test`, or if a required
+     * scenario of the given type is missing.
+     * @returns {void}
+     */
+    run(ruleName, rule, test) {
+
+        const testerConfig = this.testerConfig,
+            requiredScenarios = ["valid", "invalid"],
+            scenarioErrors = [],
+            linter = this.linter,
+            ruleId = `rule-to-test/${ruleName}`;
+
+        if (!test || typeof test !== "object") {
+            throw new TypeError(`Test Scenarios for rule ${ruleName} : Could not find test scenario object`);
+        }
+
+        requiredScenarios.forEach(scenarioType => {
+            if (!test[scenarioType]) {
+                scenarioErrors.push(`Could not find any ${scenarioType} test scenarios`);
+            }
+        });
+
+        if (scenarioErrors.length > 0) {
+            throw new Error([
+                `Test Scenarios for rule ${ruleName} is invalid:`
+            ].concat(scenarioErrors).join("\n"));
+        }
+
+        const baseConfig = [
+            { files: ["**"] }, // Make sure the default config matches for all files
+            {
+                plugins: {
+
+                    // copy root plugin over
+                    "@": {
+
+                        /*
+                         * Parsers are wrapped to detect more errors, so this needs
+                         * to be a new object for each call to run(), otherwise the
+                         * parsers will be wrapped multiple times.
+                         */
+                        parsers: {
+                            ...defaultConfig[0].plugins["@"].parsers
+                        },
+
+                        /*
+                         * The rules key on the default plugin is a proxy to lazy-load
+                         * just the rules that are needed. So, don't create a new object
+                         * here, just use the default one to keep that performance
+                         * enhancement.
+                         */
+                        rules: defaultConfig[0].plugins["@"].rules
+                    },
+                    "rule-to-test": {
+                        rules: {
+                            [ruleName]: Object.assign({}, rule, {
+
+                                // Create a wrapper rule that freezes the `context` properties.
+                                create(context) {
+                                    freezeDeeply(context.options);
+                                    freezeDeeply(context.settings);
+                                    freezeDeeply(context.parserOptions);
+
+                                    // freezeDeeply(context.languageOptions);
+
+                                    return (typeof rule === "function" ? rule : rule.create)(context);
+                                }
+                            })
+                        }
+                    }
+                },
+                languageOptions: {
+                    ...defaultConfig[0].languageOptions
+                }
+            },
+            ...defaultConfig.slice(1)
+        ];
+
+        /**
+         * Run the rule for the given item
+         * @param {string|Object} item Item to run the rule against
+         * @throws {Error} If an invalid schema.
+         * @returns {Object} Eslint run result
+         * @private
+         */
+        function runRuleForItem(item) {
+            const flatConfigArrayOptions = {
+                baseConfig
+            };
+
+            if (item.filename) {
+                flatConfigArrayOptions.basePath = path.parse(item.filename).root;
+            }
+
+            const configs = new FlatConfigArray(testerConfig, flatConfigArrayOptions);
+
+            /*
+             * Modify the returned config so that the parser is wrapped to catch
+             * access of the start/end properties. This method is called just
+             * once per code snippet being tested, so each test case gets a clean
+             * parser.
+             */
+            configs[ConfigArraySymbol.finalizeConfig] = function(...args) {
+
+                // can't do super here :(
+                const proto = Object.getPrototypeOf(this);
+                const calculatedConfig = proto[ConfigArraySymbol.finalizeConfig].apply(this, args);
+
+                // wrap the parser to catch start/end property access
+                calculatedConfig.languageOptions.parser = wrapParser(calculatedConfig.languageOptions.parser);
+                return calculatedConfig;
+            };
+
+            let code, filename, output, beforeAST, afterAST;
+
+            if (typeof item === "string") {
+                code = item;
+            } else {
+                code = item.code;
+
+                /*
+                 * Assumes everything on the item is a config except for the
+                 * parameters used by this tester
+                 */
+                const itemConfig = { ...item };
+
+                for (const parameter of RuleTesterParameters) {
+                    delete itemConfig[parameter];
+                }
+
+                // wrap any parsers
+                if (itemConfig.languageOptions && itemConfig.languageOptions.parser) {
+
+                    const parser = itemConfig.languageOptions.parser;
+
+                    if (parser && typeof parser !== "object") {
+                        throw new Error("Parser must be an object with a parse() or parseForESLint() method.");
+                    }
+
+                }
+
+                /*
+                 * Create the config object from the tester config and this item
+                 * specific configurations.
+                 */
+                configs.push(itemConfig);
+            }
+
+            if (item.filename) {
+                filename = item.filename;
+            }
+
+            let ruleConfig = 1;
+
+            if (hasOwnProperty(item, "options")) {
+                assert(Array.isArray(item.options), "options must be an array");
+                ruleConfig = [1, ...item.options];
+            }
+
+            configs.push({
+                rules: {
+                    [ruleId]: ruleConfig
+                }
+            });
+
+            const schema = getRuleOptionsSchema(rule);
+
+            /*
+             * Setup AST getters.
+             * The goal is to check whether or not AST was modified when
+             * running the rule under test.
+             */
+            configs.push({
+                plugins: {
+                    "rule-tester": {
+                        rules: {
+                            "validate-ast": {
+                                create() {
+                                    return {
+                                        Program(node) {
+                                            beforeAST = cloneDeeplyExcludesParent(node);
+                                        },
+                                        "Program:exit"(node) {
+                                            afterAST = node;
+                                        }
+                                    };
+                                }
+                            }
+                        }
+                    }
+                }
+            });
+
+            if (schema) {
+                ajv.validateSchema(schema);
+
+                if (ajv.errors) {
+                    const errors = ajv.errors.map(error => {
+                        const field = error.dataPath[0] === "." ? error.dataPath.slice(1) : error.dataPath;
+
+                        return `\t${field}: ${error.message}`;
+                    }).join("\n");
+
+                    throw new Error([`Schema for rule ${ruleName} is invalid:`, errors]);
+                }
+
+                /*
+                 * `ajv.validateSchema` checks for errors in the structure of the schema (by comparing the schema against a "meta-schema"),
+                 * and it reports those errors individually. However, there are other types of schema errors that only occur when compiling
+                 * the schema (e.g. using invalid defaults in a schema), and only one of these errors can be reported at a time. As a result,
+                 * the schema is compiled here separately from checking for `validateSchema` errors.
+                 */
+                try {
+                    ajv.compile(schema);
+                } catch (err) {
+                    throw new Error(`Schema for rule ${ruleName} is invalid: ${err.message}`);
+                }
+            }
+
+            // check for validation errors
+            try {
+                configs.normalizeSync();
+                configs.getConfig("test.js");
+            } catch (error) {
+                error.message = `ESLint configuration in rule-tester is invalid: ${error.message}`;
+                throw error;
+            }
+
+            // Verify the code.
+            const { getComments, applyLanguageOptions, applyInlineConfig, finalize } = SourceCode.prototype;
+            const originalCurrentSegments = Object.getOwnPropertyDescriptor(CodePath.prototype, "currentSegments");
+            let messages;
+
+            try {
+                SourceCode.prototype.getComments = getCommentsDeprecation;
+                Object.defineProperty(CodePath.prototype, "currentSegments", {
+                    get() {
+                        emitCodePathCurrentSegmentsWarning(ruleName);
+                        return originalCurrentSegments.get.call(this);
+                    }
+                });
+
+                forbiddenMethods.forEach(methodName => {
+                    SourceCode.prototype[methodName] = throwForbiddenMethodError(methodName, SourceCode.prototype);
+                });
+
+                messages = linter.verify(code, configs, filename);
+            } finally {
+                SourceCode.prototype.getComments = getComments;
+                Object.defineProperty(CodePath.prototype, "currentSegments", originalCurrentSegments);
+                SourceCode.prototype.applyInlineConfig = applyInlineConfig;
+                SourceCode.prototype.applyLanguageOptions = applyLanguageOptions;
+                SourceCode.prototype.finalize = finalize;
+            }
+
+
+            const fatalErrorMessage = messages.find(m => m.fatal);
+
+            assert(!fatalErrorMessage, `A fatal parsing error occurred: ${fatalErrorMessage && fatalErrorMessage.message}`);
+
+            // Verify if autofix makes a syntax error or not.
+            if (messages.some(m => m.fix)) {
+                output = SourceCodeFixer.applyFixes(code, messages).output;
+                const errorMessageInFix = linter.verify(output, configs, filename).find(m => m.fatal);
+
+                assert(!errorMessageInFix, [
+                    "A fatal parsing error occurred in autofix.",
+                    `Error: ${errorMessageInFix && errorMessageInFix.message}`,
+                    "Autofix output:",
+                    output
+                ].join("\n"));
+            } else {
+                output = code;
+            }
+
+            return {
+                messages,
+                output,
+                beforeAST,
+                afterAST: cloneDeeplyExcludesParent(afterAST)
+            };
+        }
+
+        /**
+         * Check if the AST was changed
+         * @param {ASTNode} beforeAST AST node before running
+         * @param {ASTNode} afterAST AST node after running
+         * @returns {void}
+         * @private
+         */
+        function assertASTDidntChange(beforeAST, afterAST) {
+            if (!equal(beforeAST, afterAST)) {
+                assert.fail("Rule should not modify AST.");
+            }
+        }
+
+        /**
+         * Check if the template is valid or not
+         * all valid cases go through this
+         * @param {string|Object} item Item to run the rule against
+         * @returns {void}
+         * @private
+         */
+        function testValidTemplate(item) {
+            const code = typeof item === "object" ? item.code : item;
+
+            assert.ok(typeof code === "string", "Test case must specify a string value for 'code'");
+            if (item.name) {
+                assert.ok(typeof item.name === "string", "Optional test case property 'name' must be a string");
+            }
+
+            const result = runRuleForItem(item);
+            const messages = result.messages;
+
+            assert.strictEqual(messages.length, 0, util.format("Should have no errors but had %d: %s",
+                messages.length,
+                util.inspect(messages)));
+
+            assertASTDidntChange(result.beforeAST, result.afterAST);
+        }
+
+        /**
+         * Asserts that the message matches its expected value. If the expected
+         * value is a regular expression, it is checked against the actual
+         * value.
+         * @param {string} actual Actual value
+         * @param {string|RegExp} expected Expected value
+         * @returns {void}
+         * @private
+         */
+        function assertMessageMatches(actual, expected) {
+            if (expected instanceof RegExp) {
+
+                // assert.js doesn't have a built-in RegExp match function
+                assert.ok(
+                    expected.test(actual),
+                    `Expected '${actual}' to match ${expected}`
+                );
+            } else {
+                assert.strictEqual(actual, expected);
+            }
+        }
+
+        /**
+         * Check if the template is invalid or not
+         * all invalid cases go through this.
+         * @param {string|Object} item Item to run the rule against
+         * @returns {void}
+         * @private
+         */
+        function testInvalidTemplate(item) {
+            assert.ok(typeof item.code === "string", "Test case must specify a string value for 'code'");
+            if (item.name) {
+                assert.ok(typeof item.name === "string", "Optional test case property 'name' must be a string");
+            }
+            assert.ok(item.errors || item.errors === 0,
+                `Did not specify errors for an invalid test of ${ruleName}`);
+
+            if (Array.isArray(item.errors) && item.errors.length === 0) {
+                assert.fail("Invalid cases must have at least one error");
+            }
+
+            const ruleHasMetaMessages = hasOwnProperty(rule, "meta") && hasOwnProperty(rule.meta, "messages");
+            const friendlyIDList = ruleHasMetaMessages ? `[${Object.keys(rule.meta.messages).map(key => `'${key}'`).join(", ")}]` : null;
+
+            const result = runRuleForItem(item);
+            const messages = result.messages;
+
+            if (typeof item.errors === "number") {
+
+                if (item.errors === 0) {
+                    assert.fail("Invalid cases must have 'error' value greater than 0");
+                }
+
+                assert.strictEqual(messages.length, item.errors, util.format("Should have %d error%s but had %d: %s",
+                    item.errors,
+                    item.errors === 1 ? "" : "s",
+                    messages.length,
+                    util.inspect(messages)));
+            } else {
+                assert.strictEqual(
+                    messages.length, item.errors.length, util.format(
+                        "Should have %d error%s but had %d: %s",
+                        item.errors.length,
+                        item.errors.length === 1 ? "" : "s",
+                        messages.length,
+                        util.inspect(messages)
+                    )
+                );
+
+                const hasMessageOfThisRule = messages.some(m => m.ruleId === ruleId);
+
+                for (let i = 0, l = item.errors.length; i < l; i++) {
+                    const error = item.errors[i];
+                    const message = messages[i];
+
+                    assert(hasMessageOfThisRule, "Error rule name should be the same as the name of the rule being tested");
+
+                    if (typeof error === "string" || error instanceof RegExp) {
+
+                        // Just an error message.
+                        assertMessageMatches(message.message, error);
+                    } else if (typeof error === "object" && error !== null) {
+
+                        /*
+                         * Error object.
+                         * This may have a message, messageId, data, node type, line, and/or
+                         * column.
+                         */
+
+                        Object.keys(error).forEach(propertyName => {
+                            assert.ok(
+                                errorObjectParameters.has(propertyName),
+                                `Invalid error property name '${propertyName}'. Expected one of ${friendlyErrorObjectParameterList}.`
+                            );
+                        });
+
+                        if (hasOwnProperty(error, "message")) {
+                            assert.ok(!hasOwnProperty(error, "messageId"), "Error should not specify both 'message' and a 'messageId'.");
+                            assert.ok(!hasOwnProperty(error, "data"), "Error should not specify both 'data' and 'message'.");
+                            assertMessageMatches(message.message, error.message);
+                        } else if (hasOwnProperty(error, "messageId")) {
+                            assert.ok(
+                                ruleHasMetaMessages,
+                                "Error can not use 'messageId' if rule under test doesn't define 'meta.messages'."
+                            );
+                            if (!hasOwnProperty(rule.meta.messages, error.messageId)) {
+                                assert(false, `Invalid messageId '${error.messageId}'. Expected one of ${friendlyIDList}.`);
+                            }
+                            assert.strictEqual(
+                                message.messageId,
+                                error.messageId,
+                                `messageId '${message.messageId}' does not match expected messageId '${error.messageId}'.`
+                            );
+                            if (hasOwnProperty(error, "data")) {
+
+                                /*
+                                 *  if data was provided, then directly compare the returned message to a synthetic
+                                 *  interpolated message using the same message ID and data provided in the test.
+                                 *  See https://github.com/eslint/eslint/issues/9890 for context.
+                                 */
+                                const unformattedOriginalMessage = rule.meta.messages[error.messageId];
+                                const rehydratedMessage = interpolate(unformattedOriginalMessage, error.data);
+
+                                assert.strictEqual(
+                                    message.message,
+                                    rehydratedMessage,
+                                    `Hydrated message "${rehydratedMessage}" does not match "${message.message}"`
+                                );
+                            }
+                        }
+
+                        assert.ok(
+                            hasOwnProperty(error, "data") ? hasOwnProperty(error, "messageId") : true,
+                            "Error must specify 'messageId' if 'data' is used."
+                        );
+
+                        if (error.type) {
+                            assert.strictEqual(message.nodeType, error.type, `Error type should be ${error.type}, found ${message.nodeType}`);
+                        }
+
+                        if (hasOwnProperty(error, "line")) {
+                            assert.strictEqual(message.line, error.line, `Error line should be ${error.line}`);
+                        }
+
+                        if (hasOwnProperty(error, "column")) {
+                            assert.strictEqual(message.column, error.column, `Error column should be ${error.column}`);
+                        }
+
+                        if (hasOwnProperty(error, "endLine")) {
+                            assert.strictEqual(message.endLine, error.endLine, `Error endLine should be ${error.endLine}`);
+                        }
+
+                        if (hasOwnProperty(error, "endColumn")) {
+                            assert.strictEqual(message.endColumn, error.endColumn, `Error endColumn should be ${error.endColumn}`);
+                        }
+
+                        if (hasOwnProperty(error, "suggestions")) {
+
+                            // Support asserting there are no suggestions
+                            if (!error.suggestions || (Array.isArray(error.suggestions) && error.suggestions.length === 0)) {
+                                if (Array.isArray(message.suggestions) && message.suggestions.length > 0) {
+                                    assert.fail(`Error should have no suggestions on error with message: "${message.message}"`);
+                                }
+                            } else {
+                                assert.strictEqual(Array.isArray(message.suggestions), true, `Error should have an array of suggestions. Instead received "${message.suggestions}" on error with message: "${message.message}"`);
+                                assert.strictEqual(message.suggestions.length, error.suggestions.length, `Error should have ${error.suggestions.length} suggestions. Instead found ${message.suggestions.length} suggestions`);
+
+                                error.suggestions.forEach((expectedSuggestion, index) => {
+                                    assert.ok(
+                                        typeof expectedSuggestion === "object" && expectedSuggestion !== null,
+                                        "Test suggestion in 'suggestions' array must be an object."
+                                    );
+                                    Object.keys(expectedSuggestion).forEach(propertyName => {
+                                        assert.ok(
+                                            suggestionObjectParameters.has(propertyName),
+                                            `Invalid suggestion property name '${propertyName}'. Expected one of ${friendlySuggestionObjectParameterList}.`
+                                        );
+                                    });
+
+                                    const actualSuggestion = message.suggestions[index];
+                                    const suggestionPrefix = `Error Suggestion at index ${index} :`;
+
+                                    if (hasOwnProperty(expectedSuggestion, "desc")) {
+                                        assert.ok(
+                                            !hasOwnProperty(expectedSuggestion, "data"),
+                                            `${suggestionPrefix} Test should not specify both 'desc' and 'data'.`
+                                        );
+                                        assert.strictEqual(
+                                            actualSuggestion.desc,
+                                            expectedSuggestion.desc,
+                                            `${suggestionPrefix} desc should be "${expectedSuggestion.desc}" but got "${actualSuggestion.desc}" instead.`
+                                        );
+                                    }
+
+                                    if (hasOwnProperty(expectedSuggestion, "messageId")) {
+                                        assert.ok(
+                                            ruleHasMetaMessages,
+                                            `${suggestionPrefix} Test can not use 'messageId' if rule under test doesn't define 'meta.messages'.`
+                                        );
+                                        assert.ok(
+                                            hasOwnProperty(rule.meta.messages, expectedSuggestion.messageId),
+                                            `${suggestionPrefix} Test has invalid messageId '${expectedSuggestion.messageId}', the rule under test allows only one of ${friendlyIDList}.`
+                                        );
+                                        assert.strictEqual(
+                                            actualSuggestion.messageId,
+                                            expectedSuggestion.messageId,
+                                            `${suggestionPrefix} messageId should be '${expectedSuggestion.messageId}' but got '${actualSuggestion.messageId}' instead.`
+                                        );
+                                        if (hasOwnProperty(expectedSuggestion, "data")) {
+                                            const unformattedMetaMessage = rule.meta.messages[expectedSuggestion.messageId];
+                                            const rehydratedDesc = interpolate(unformattedMetaMessage, expectedSuggestion.data);
+
+                                            assert.strictEqual(
+                                                actualSuggestion.desc,
+                                                rehydratedDesc,
+                                                `${suggestionPrefix} Hydrated test desc "${rehydratedDesc}" does not match received desc "${actualSuggestion.desc}".`
+                                            );
+                                        }
+                                    } else {
+                                        assert.ok(
+                                            !hasOwnProperty(expectedSuggestion, "data"),
+                                            `${suggestionPrefix} Test must specify 'messageId' if 'data' is used.`
+                                        );
+                                    }
+
+                                    if (hasOwnProperty(expectedSuggestion, "output")) {
+                                        const codeWithAppliedSuggestion = SourceCodeFixer.applyFixes(item.code, [actualSuggestion]).output;
+
+                                        assert.strictEqual(codeWithAppliedSuggestion, expectedSuggestion.output, `Expected the applied suggestion fix to match the test suggestion output for suggestion at index: ${index} on error with message: "${message.message}"`);
+                                    }
+                                });
+                            }
+                        }
+                    } else {
+
+                        // Message was an unexpected type
+                        assert.fail(`Error should be a string, object, or RegExp, but found (${util.inspect(message)})`);
+                    }
+                }
+            }
+
+            if (hasOwnProperty(item, "output")) {
+                if (item.output === null) {
+                    assert.strictEqual(
+                        result.output,
+                        item.code,
+                        "Expected no autofixes to be suggested"
+                    );
+                } else {
+                    assert.strictEqual(result.output, item.output, "Output is incorrect.");
+                }
+            } else {
+                assert.strictEqual(
+                    result.output,
+                    item.code,
+                    "The rule fixed the code. Please add 'output' property."
+                );
+            }
+
+            assertASTDidntChange(result.beforeAST, result.afterAST);
+        }
+
+        /*
+         * This creates a mocha test suite and pipes all supplied info through
+         * one of the templates above.
+         * The test suites for valid/invalid are created conditionally as
+         * test runners (eg. vitest) fail for empty test suites.
+         */
+        this.constructor.describe(ruleName, () => {
+            if (test.valid.length > 0) {
+                this.constructor.describe("valid", () => {
+                    test.valid.forEach(valid => {
+                        this.constructor[valid.only ? "itOnly" : "it"](
+                            sanitize(typeof valid === "object" ? valid.name || valid.code : valid),
+                            () => {
+                                testValidTemplate(valid);
+                            }
+                        );
+                    });
+                });
+            }
+
+            if (test.invalid.length > 0) {
+                this.constructor.describe("invalid", () => {
+                    test.invalid.forEach(invalid => {
+                        this.constructor[invalid.only ? "itOnly" : "it"](
+                            sanitize(invalid.name || invalid.code),
+                            () => {
+                                testInvalidTemplate(invalid);
+                            }
+                        );
+                    });
+                });
+            }
+        });
+    }
+}
+
+FlatRuleTester[DESCRIBE] = FlatRuleTester[IT] = FlatRuleTester[IT_ONLY] = null;
+
+module.exports = FlatRuleTester;
Index: frontend/node_modules/eslint/lib/rule-tester/index.js
===================================================================
--- frontend/node_modules/eslint/lib/rule-tester/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rule-tester/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,5 @@
+"use strict";
+
+module.exports = {
+    RuleTester: require("./rule-tester")
+};
Index: frontend/node_modules/eslint/lib/rule-tester/rule-tester.js
===================================================================
--- frontend/node_modules/eslint/lib/rule-tester/rule-tester.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rule-tester/rule-tester.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,1206 @@
+/**
+ * @fileoverview Mocha test wrapper
+ * @author Ilya Volodin
+ */
+"use strict";
+
+/* globals describe, it -- Mocha globals */
+
+/*
+ * This is a wrapper around mocha to allow for DRY unittests for eslint
+ * Format:
+ * RuleTester.run("{ruleName}", {
+ *      valid: [
+ *          "{code}",
+ *          { code: "{code}", options: {options}, globals: {globals}, parser: "{parser}", settings: {settings} }
+ *      ],
+ *      invalid: [
+ *          { code: "{code}", errors: {numErrors} },
+ *          { code: "{code}", errors: ["{errorMessage}"] },
+ *          { code: "{code}", options: {options}, globals: {globals}, parser: "{parser}", settings: {settings}, errors: [{ message: "{errorMessage}", type: "{errorNodeType}"}] }
+ *      ]
+ *  });
+ *
+ * Variables:
+ * {code} - String that represents the code to be tested
+ * {options} - Arguments that are passed to the configurable rules.
+ * {globals} - An object representing a list of variables that are
+ *             registered as globals
+ * {parser} - String representing the parser to use
+ * {settings} - An object representing global settings for all rules
+ * {numErrors} - If failing case doesn't need to check error message,
+ *               this integer will specify how many errors should be
+ *               received
+ * {errorMessage} - Message that is returned by the rule on failure
+ * {errorNodeType} - AST node type that is returned by they rule as
+ *                   a cause of the failure.
+ */
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const
+    assert = require("assert"),
+    path = require("path"),
+    util = require("util"),
+    merge = require("lodash.merge"),
+    equal = require("fast-deep-equal"),
+    Traverser = require("../../lib/shared/traverser"),
+    { getRuleOptionsSchema, validate } = require("../shared/config-validator"),
+    { Linter, SourceCodeFixer, interpolate } = require("../linter"),
+    CodePath = require("../linter/code-path-analysis/code-path");
+
+const ajv = require("../shared/ajv")({ strictDefaults: true });
+
+const espreePath = require.resolve("espree");
+const parserSymbol = Symbol.for("eslint.RuleTester.parser");
+
+const { SourceCode } = require("../source-code");
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/** @typedef {import("../shared/types").Parser} Parser */
+/** @typedef {import("../shared/types").Rule} Rule */
+
+
+/**
+ * A test case that is expected to pass lint.
+ * @typedef {Object} ValidTestCase
+ * @property {string} [name] Name for the test case.
+ * @property {string} code Code for the test case.
+ * @property {any[]} [options] Options for the test case.
+ * @property {{ [name: string]: any }} [settings] Settings for the test case.
+ * @property {string} [filename] The fake filename for the test case. Useful for rules that make assertion about filenames.
+ * @property {string} [parser] The absolute path for the parser.
+ * @property {{ [name: string]: any }} [parserOptions] Options for the parser.
+ * @property {{ [name: string]: "readonly" | "writable" | "off" }} [globals] The additional global variables.
+ * @property {{ [name: string]: boolean }} [env] Environments for the test case.
+ * @property {boolean} [only] Run only this test case or the subset of test cases with this property.
+ */
+
+/**
+ * A test case that is expected to fail lint.
+ * @typedef {Object} InvalidTestCase
+ * @property {string} [name] Name for the test case.
+ * @property {string} code Code for the test case.
+ * @property {number | Array<TestCaseError | string | RegExp>} errors Expected errors.
+ * @property {string | null} [output] The expected code after autofixes are applied. If set to `null`, the test runner will assert that no autofix is suggested.
+ * @property {any[]} [options] Options for the test case.
+ * @property {{ [name: string]: any }} [settings] Settings for the test case.
+ * @property {string} [filename] The fake filename for the test case. Useful for rules that make assertion about filenames.
+ * @property {string} [parser] The absolute path for the parser.
+ * @property {{ [name: string]: any }} [parserOptions] Options for the parser.
+ * @property {{ [name: string]: "readonly" | "writable" | "off" }} [globals] The additional global variables.
+ * @property {{ [name: string]: boolean }} [env] Environments for the test case.
+ * @property {boolean} [only] Run only this test case or the subset of test cases with this property.
+ */
+
+/**
+ * A description of a reported error used in a rule tester test.
+ * @typedef {Object} TestCaseError
+ * @property {string | RegExp} [message] Message.
+ * @property {string} [messageId] Message ID.
+ * @property {string} [type] The type of the reported AST node.
+ * @property {{ [name: string]: string }} [data] The data used to fill the message template.
+ * @property {number} [line] The 1-based line number of the reported start location.
+ * @property {number} [column] The 1-based column number of the reported start location.
+ * @property {number} [endLine] The 1-based line number of the reported end location.
+ * @property {number} [endColumn] The 1-based column number of the reported end location.
+ */
+
+//------------------------------------------------------------------------------
+// Private Members
+//------------------------------------------------------------------------------
+
+/*
+ * testerDefaultConfig must not be modified as it allows to reset the tester to
+ * the initial default configuration
+ */
+const testerDefaultConfig = { rules: {} };
+let defaultConfig = { rules: {} };
+
+/*
+ * List every parameters possible on a test case that are not related to eslint
+ * configuration
+ */
+const RuleTesterParameters = [
+    "name",
+    "code",
+    "filename",
+    "options",
+    "errors",
+    "output",
+    "only"
+];
+
+/*
+ * All allowed property names in error objects.
+ */
+const errorObjectParameters = new Set([
+    "message",
+    "messageId",
+    "data",
+    "type",
+    "line",
+    "column",
+    "endLine",
+    "endColumn",
+    "suggestions"
+]);
+const friendlyErrorObjectParameterList = `[${[...errorObjectParameters].map(key => `'${key}'`).join(", ")}]`;
+
+/*
+ * All allowed property names in suggestion objects.
+ */
+const suggestionObjectParameters = new Set([
+    "desc",
+    "messageId",
+    "data",
+    "output"
+]);
+const friendlySuggestionObjectParameterList = `[${[...suggestionObjectParameters].map(key => `'${key}'`).join(", ")}]`;
+
+const forbiddenMethods = [
+    "applyInlineConfig",
+    "applyLanguageOptions",
+    "finalize"
+];
+
+const hasOwnProperty = Function.call.bind(Object.hasOwnProperty);
+
+const DEPRECATED_SOURCECODE_PASSTHROUGHS = {
+    getSource: "getText",
+    getSourceLines: "getLines",
+    getAllComments: "getAllComments",
+    getNodeByRangeIndex: "getNodeByRangeIndex",
+
+    // getComments: "getComments", -- already handled by a separate error
+    getCommentsBefore: "getCommentsBefore",
+    getCommentsAfter: "getCommentsAfter",
+    getCommentsInside: "getCommentsInside",
+    getJSDocComment: "getJSDocComment",
+    getFirstToken: "getFirstToken",
+    getFirstTokens: "getFirstTokens",
+    getLastToken: "getLastToken",
+    getLastTokens: "getLastTokens",
+    getTokenAfter: "getTokenAfter",
+    getTokenBefore: "getTokenBefore",
+    getTokenByRangeStart: "getTokenByRangeStart",
+    getTokens: "getTokens",
+    getTokensAfter: "getTokensAfter",
+    getTokensBefore: "getTokensBefore",
+    getTokensBetween: "getTokensBetween",
+
+    getScope: "getScope",
+    getAncestors: "getAncestors",
+    getDeclaredVariables: "getDeclaredVariables",
+    markVariableAsUsed: "markVariableAsUsed"
+};
+
+/**
+ * Clones a given value deeply.
+ * Note: This ignores `parent` property.
+ * @param {any} x A value to clone.
+ * @returns {any} A cloned value.
+ */
+function cloneDeeplyExcludesParent(x) {
+    if (typeof x === "object" && x !== null) {
+        if (Array.isArray(x)) {
+            return x.map(cloneDeeplyExcludesParent);
+        }
+
+        const retv = {};
+
+        for (const key in x) {
+            if (key !== "parent" && hasOwnProperty(x, key)) {
+                retv[key] = cloneDeeplyExcludesParent(x[key]);
+            }
+        }
+
+        return retv;
+    }
+
+    return x;
+}
+
+/**
+ * Freezes a given value deeply.
+ * @param {any} x A value to freeze.
+ * @returns {void}
+ */
+function freezeDeeply(x) {
+    if (typeof x === "object" && x !== null) {
+        if (Array.isArray(x)) {
+            x.forEach(freezeDeeply);
+        } else {
+            for (const key in x) {
+                if (key !== "parent" && hasOwnProperty(x, key)) {
+                    freezeDeeply(x[key]);
+                }
+            }
+        }
+        Object.freeze(x);
+    }
+}
+
+/**
+ * Replace control characters by `\u00xx` form.
+ * @param {string} text The text to sanitize.
+ * @returns {string} The sanitized text.
+ */
+function sanitize(text) {
+    if (typeof text !== "string") {
+        return "";
+    }
+    return text.replace(
+        /[\u0000-\u0009\u000b-\u001a]/gu, // eslint-disable-line no-control-regex -- Escaping controls
+        c => `\\u${c.codePointAt(0).toString(16).padStart(4, "0")}`
+    );
+}
+
+/**
+ * Define `start`/`end` properties as throwing error.
+ * @param {string} objName Object name used for error messages.
+ * @param {ASTNode} node The node to define.
+ * @returns {void}
+ */
+function defineStartEndAsError(objName, node) {
+    Object.defineProperties(node, {
+        start: {
+            get() {
+                throw new Error(`Use ${objName}.range[0] instead of ${objName}.start`);
+            },
+            configurable: true,
+            enumerable: false
+        },
+        end: {
+            get() {
+                throw new Error(`Use ${objName}.range[1] instead of ${objName}.end`);
+            },
+            configurable: true,
+            enumerable: false
+        }
+    });
+}
+
+
+/**
+ * Define `start`/`end` properties of all nodes of the given AST as throwing error.
+ * @param {ASTNode} ast The root node to errorize `start`/`end` properties.
+ * @param {Object} [visitorKeys] Visitor keys to be used for traversing the given ast.
+ * @returns {void}
+ */
+function defineStartEndAsErrorInTree(ast, visitorKeys) {
+    Traverser.traverse(ast, { visitorKeys, enter: defineStartEndAsError.bind(null, "node") });
+    ast.tokens.forEach(defineStartEndAsError.bind(null, "token"));
+    ast.comments.forEach(defineStartEndAsError.bind(null, "token"));
+}
+
+/**
+ * Wraps the given parser in order to intercept and modify return values from the `parse` and `parseForESLint` methods, for test purposes.
+ * In particular, to modify ast nodes, tokens and comments to throw on access to their `start` and `end` properties.
+ * @param {Parser} parser Parser object.
+ * @returns {Parser} Wrapped parser object.
+ */
+function wrapParser(parser) {
+
+    if (typeof parser.parseForESLint === "function") {
+        return {
+            [parserSymbol]: parser,
+            parseForESLint(...args) {
+                const ret = parser.parseForESLint(...args);
+
+                defineStartEndAsErrorInTree(ret.ast, ret.visitorKeys);
+                return ret;
+            }
+        };
+    }
+
+    return {
+        [parserSymbol]: parser,
+        parse(...args) {
+            const ast = parser.parse(...args);
+
+            defineStartEndAsErrorInTree(ast);
+            return ast;
+        }
+    };
+}
+
+/**
+ * Function to replace `SourceCode.prototype.getComments`.
+ * @returns {void}
+ * @throws {Error} Deprecation message.
+ */
+function getCommentsDeprecation() {
+    throw new Error(
+        "`SourceCode#getComments()` is deprecated and will be removed in a future major version. Use `getCommentsBefore()`, `getCommentsAfter()`, and `getCommentsInside()` instead."
+    );
+}
+
+/**
+ * Function to replace forbidden `SourceCode` methods.
+ * @param {string} methodName The name of the method to forbid.
+ * @returns {Function} The function that throws the error.
+ */
+function throwForbiddenMethodError(methodName) {
+    return () => {
+        throw new Error(
+            `\`SourceCode#${methodName}()\` cannot be called inside a rule.`
+        );
+    };
+}
+
+/**
+ * Emit a deprecation warning if function-style format is being used.
+ * @param {string} ruleName Name of the rule.
+ * @returns {void}
+ */
+function emitLegacyRuleAPIWarning(ruleName) {
+    if (!emitLegacyRuleAPIWarning[`warned-${ruleName}`]) {
+        emitLegacyRuleAPIWarning[`warned-${ruleName}`] = true;
+        process.emitWarning(
+            `"${ruleName}" rule is using the deprecated function-style format and will stop working in ESLint v9. Please use object-style format: https://eslint.org/docs/latest/extend/custom-rules`,
+            "DeprecationWarning"
+        );
+    }
+}
+
+/**
+ * Emit a deprecation warning if rule has options but is missing the "meta.schema" property
+ * @param {string} ruleName Name of the rule.
+ * @returns {void}
+ */
+function emitMissingSchemaWarning(ruleName) {
+    if (!emitMissingSchemaWarning[`warned-${ruleName}`]) {
+        emitMissingSchemaWarning[`warned-${ruleName}`] = true;
+        process.emitWarning(
+            `"${ruleName}" rule has options but is missing the "meta.schema" property and will stop working in ESLint v9. Please add a schema: https://eslint.org/docs/latest/extend/custom-rules#options-schemas`,
+            "DeprecationWarning"
+        );
+    }
+}
+
+/**
+ * Emit a deprecation warning if a rule uses a deprecated `context` method.
+ * @param {string} ruleName Name of the rule.
+ * @param {string} methodName The name of the method on `context` that was used.
+ * @returns {void}
+ */
+function emitDeprecatedContextMethodWarning(ruleName, methodName) {
+    if (!emitDeprecatedContextMethodWarning[`warned-${ruleName}-${methodName}`]) {
+        emitDeprecatedContextMethodWarning[`warned-${ruleName}-${methodName}`] = true;
+        process.emitWarning(
+            `"${ruleName}" rule is using \`context.${methodName}()\`, which is deprecated and will be removed in ESLint v9. Please use \`sourceCode.${DEPRECATED_SOURCECODE_PASSTHROUGHS[methodName]}()\` instead.`,
+            "DeprecationWarning"
+        );
+    }
+}
+
+/**
+ * Emit a deprecation warning if rule uses CodePath#currentSegments.
+ * @param {string} ruleName Name of the rule.
+ * @returns {void}
+ */
+function emitCodePathCurrentSegmentsWarning(ruleName) {
+    if (!emitCodePathCurrentSegmentsWarning[`warned-${ruleName}`]) {
+        emitCodePathCurrentSegmentsWarning[`warned-${ruleName}`] = true;
+        process.emitWarning(
+            `"${ruleName}" rule uses CodePath#currentSegments and will stop working in ESLint v9. Please read the documentation for how to update your code: https://eslint.org/docs/latest/extend/code-path-analysis#usage-examples`,
+            "DeprecationWarning"
+        );
+    }
+}
+
+/**
+ * Emit a deprecation warning if `context.parserServices` is used.
+ * @param {string} ruleName Name of the rule.
+ * @returns {void}
+ */
+function emitParserServicesWarning(ruleName) {
+    if (!emitParserServicesWarning[`warned-${ruleName}`]) {
+        emitParserServicesWarning[`warned-${ruleName}`] = true;
+        process.emitWarning(
+            `"${ruleName}" rule is using \`context.parserServices\`, which is deprecated and will be removed in ESLint v9. Please use \`sourceCode.parserServices\` instead.`,
+            "DeprecationWarning"
+        );
+    }
+}
+
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+// default separators for testing
+const DESCRIBE = Symbol("describe");
+const IT = Symbol("it");
+const IT_ONLY = Symbol("itOnly");
+
+/**
+ * This is `it` default handler if `it` don't exist.
+ * @this {Mocha}
+ * @param {string} text The description of the test case.
+ * @param {Function} method The logic of the test case.
+ * @throws {Error} Any error upon execution of `method`.
+ * @returns {any} Returned value of `method`.
+ */
+function itDefaultHandler(text, method) {
+    try {
+        return method.call(this);
+    } catch (err) {
+        if (err instanceof assert.AssertionError) {
+            err.message += ` (${util.inspect(err.actual)} ${err.operator} ${util.inspect(err.expected)})`;
+        }
+        throw err;
+    }
+}
+
+/**
+ * This is `describe` default handler if `describe` don't exist.
+ * @this {Mocha}
+ * @param {string} text The description of the test case.
+ * @param {Function} method The logic of the test case.
+ * @returns {any} Returned value of `method`.
+ */
+function describeDefaultHandler(text, method) {
+    return method.call(this);
+}
+
+/**
+ * Mocha test wrapper.
+ */
+class RuleTester {
+
+    /**
+     * Creates a new instance of RuleTester.
+     * @param {Object} [testerConfig] Optional, extra configuration for the tester
+     */
+    constructor(testerConfig) {
+
+        /**
+         * The configuration to use for this tester. Combination of the tester
+         * configuration and the default configuration.
+         * @type {Object}
+         */
+        this.testerConfig = merge(
+            {},
+            defaultConfig,
+            testerConfig,
+            { rules: { "rule-tester/validate-ast": "error" } }
+        );
+
+        /**
+         * Rule definitions to define before tests.
+         * @type {Object}
+         */
+        this.rules = {};
+        this.linter = new Linter();
+    }
+
+    /**
+     * Set the configuration to use for all future tests
+     * @param {Object} config the configuration to use.
+     * @throws {TypeError} If non-object config.
+     * @returns {void}
+     */
+    static setDefaultConfig(config) {
+        if (typeof config !== "object" || config === null) {
+            throw new TypeError("RuleTester.setDefaultConfig: config must be an object");
+        }
+        defaultConfig = config;
+
+        // Make sure the rules object exists since it is assumed to exist later
+        defaultConfig.rules = defaultConfig.rules || {};
+    }
+
+    /**
+     * Get the current configuration used for all tests
+     * @returns {Object} the current configuration
+     */
+    static getDefaultConfig() {
+        return defaultConfig;
+    }
+
+    /**
+     * Reset the configuration to the initial configuration of the tester removing
+     * any changes made until now.
+     * @returns {void}
+     */
+    static resetDefaultConfig() {
+        defaultConfig = merge({}, testerDefaultConfig);
+    }
+
+
+    /*
+     * If people use `mocha test.js --watch` command, `describe` and `it` function
+     * instances are different for each execution. So `describe` and `it` should get fresh instance
+     * always.
+     */
+    static get describe() {
+        return (
+            this[DESCRIBE] ||
+            (typeof describe === "function" ? describe : describeDefaultHandler)
+        );
+    }
+
+    static set describe(value) {
+        this[DESCRIBE] = value;
+    }
+
+    static get it() {
+        return (
+            this[IT] ||
+            (typeof it === "function" ? it : itDefaultHandler)
+        );
+    }
+
+    static set it(value) {
+        this[IT] = value;
+    }
+
+    /**
+     * Adds the `only` property to a test to run it in isolation.
+     * @param {string | ValidTestCase | InvalidTestCase} item A single test to run by itself.
+     * @returns {ValidTestCase | InvalidTestCase} The test with `only` set.
+     */
+    static only(item) {
+        if (typeof item === "string") {
+            return { code: item, only: true };
+        }
+
+        return { ...item, only: true };
+    }
+
+    static get itOnly() {
+        if (typeof this[IT_ONLY] === "function") {
+            return this[IT_ONLY];
+        }
+        if (typeof this[IT] === "function" && typeof this[IT].only === "function") {
+            return Function.bind.call(this[IT].only, this[IT]);
+        }
+        if (typeof it === "function" && typeof it.only === "function") {
+            return Function.bind.call(it.only, it);
+        }
+
+        if (typeof this[DESCRIBE] === "function" || typeof this[IT] === "function") {
+            throw new Error(
+                "Set `RuleTester.itOnly` to use `only` with a custom test framework.\n" +
+                "See https://eslint.org/docs/latest/integrate/nodejs-api#customizing-ruletester for more."
+            );
+        }
+        if (typeof it === "function") {
+            throw new Error("The current test framework does not support exclusive tests with `only`.");
+        }
+        throw new Error("To use `only`, use RuleTester with a test framework that provides `it.only()` like Mocha.");
+    }
+
+    static set itOnly(value) {
+        this[IT_ONLY] = value;
+    }
+
+    /**
+     * Define a rule for one particular run of tests.
+     * @param {string} name The name of the rule to define.
+     * @param {Function | Rule} rule The rule definition.
+     * @returns {void}
+     */
+    defineRule(name, rule) {
+        if (typeof rule === "function") {
+            emitLegacyRuleAPIWarning(name);
+        }
+        this.rules[name] = rule;
+    }
+
+    /**
+     * Adds a new rule test to execute.
+     * @param {string} ruleName The name of the rule to run.
+     * @param {Function | Rule} rule The rule to test.
+     * @param {{
+     *   valid: (ValidTestCase | string)[],
+     *   invalid: InvalidTestCase[]
+     * }} test The collection of tests to run.
+     * @throws {TypeError|Error} If non-object `test`, or if a required
+     * scenario of the given type is missing.
+     * @returns {void}
+     */
+    run(ruleName, rule, test) {
+
+        const testerConfig = this.testerConfig,
+            requiredScenarios = ["valid", "invalid"],
+            scenarioErrors = [],
+            linter = this.linter;
+
+        if (!test || typeof test !== "object") {
+            throw new TypeError(`Test Scenarios for rule ${ruleName} : Could not find test scenario object`);
+        }
+
+        requiredScenarios.forEach(scenarioType => {
+            if (!test[scenarioType]) {
+                scenarioErrors.push(`Could not find any ${scenarioType} test scenarios`);
+            }
+        });
+
+        if (scenarioErrors.length > 0) {
+            throw new Error([
+                `Test Scenarios for rule ${ruleName} is invalid:`
+            ].concat(scenarioErrors).join("\n"));
+        }
+
+        if (typeof rule === "function") {
+            emitLegacyRuleAPIWarning(ruleName);
+        }
+
+        linter.defineRule(ruleName, Object.assign({}, rule, {
+
+            // Create a wrapper rule that freezes the `context` properties.
+            create(context) {
+                freezeDeeply(context.options);
+                freezeDeeply(context.settings);
+                freezeDeeply(context.parserOptions);
+
+                // wrap all deprecated methods
+                const newContext = Object.create(
+                    context,
+                    Object.fromEntries(Object.keys(DEPRECATED_SOURCECODE_PASSTHROUGHS).map(methodName => [
+                        methodName,
+                        {
+                            value(...args) {
+
+                                // emit deprecation warning
+                                emitDeprecatedContextMethodWarning(ruleName, methodName);
+
+                                // call the original method
+                                return context[methodName].call(this, ...args);
+                            },
+                            enumerable: true
+                        }
+                    ]))
+                );
+
+                // emit warning about context.parserServices
+                const parserServices = context.parserServices;
+
+                Object.defineProperty(newContext, "parserServices", {
+                    get() {
+                        emitParserServicesWarning(ruleName);
+                        return parserServices;
+                    }
+                });
+
+                Object.freeze(newContext);
+
+                return (typeof rule === "function" ? rule : rule.create)(newContext);
+            }
+        }));
+
+        linter.defineRules(this.rules);
+
+        /**
+         * Run the rule for the given item
+         * @param {string|Object} item Item to run the rule against
+         * @throws {Error} If an invalid schema.
+         * @returns {Object} Eslint run result
+         * @private
+         */
+        function runRuleForItem(item) {
+            let config = merge({}, testerConfig),
+                code, filename, output, beforeAST, afterAST;
+
+            if (typeof item === "string") {
+                code = item;
+            } else {
+                code = item.code;
+
+                /*
+                 * Assumes everything on the item is a config except for the
+                 * parameters used by this tester
+                 */
+                const itemConfig = { ...item };
+
+                for (const parameter of RuleTesterParameters) {
+                    delete itemConfig[parameter];
+                }
+
+                /*
+                 * Create the config object from the tester config and this item
+                 * specific configurations.
+                 */
+                config = merge(
+                    config,
+                    itemConfig
+                );
+            }
+
+            if (item.filename) {
+                filename = item.filename;
+            }
+
+            if (hasOwnProperty(item, "options")) {
+                assert(Array.isArray(item.options), "options must be an array");
+                if (
+                    item.options.length > 0 &&
+                    typeof rule === "object" &&
+                    (
+                        !rule.meta || (rule.meta && (typeof rule.meta.schema === "undefined" || rule.meta.schema === null))
+                    )
+                ) {
+                    emitMissingSchemaWarning(ruleName);
+                }
+                config.rules[ruleName] = [1].concat(item.options);
+            } else {
+                config.rules[ruleName] = 1;
+            }
+
+            const schema = getRuleOptionsSchema(rule);
+
+            /*
+             * Setup AST getters.
+             * The goal is to check whether or not AST was modified when
+             * running the rule under test.
+             */
+            linter.defineRule("rule-tester/validate-ast", {
+                create() {
+                    return {
+                        Program(node) {
+                            beforeAST = cloneDeeplyExcludesParent(node);
+                        },
+                        "Program:exit"(node) {
+                            afterAST = node;
+                        }
+                    };
+                }
+            });
+
+            if (typeof config.parser === "string") {
+                assert(path.isAbsolute(config.parser), "Parsers provided as strings to RuleTester must be absolute paths");
+            } else {
+                config.parser = espreePath;
+            }
+
+            linter.defineParser(config.parser, wrapParser(require(config.parser)));
+
+            if (schema) {
+                ajv.validateSchema(schema);
+
+                if (ajv.errors) {
+                    const errors = ajv.errors.map(error => {
+                        const field = error.dataPath[0] === "." ? error.dataPath.slice(1) : error.dataPath;
+
+                        return `\t${field}: ${error.message}`;
+                    }).join("\n");
+
+                    throw new Error([`Schema for rule ${ruleName} is invalid:`, errors]);
+                }
+
+                /*
+                 * `ajv.validateSchema` checks for errors in the structure of the schema (by comparing the schema against a "meta-schema"),
+                 * and it reports those errors individually. However, there are other types of schema errors that only occur when compiling
+                 * the schema (e.g. using invalid defaults in a schema), and only one of these errors can be reported at a time. As a result,
+                 * the schema is compiled here separately from checking for `validateSchema` errors.
+                 */
+                try {
+                    ajv.compile(schema);
+                } catch (err) {
+                    throw new Error(`Schema for rule ${ruleName} is invalid: ${err.message}`);
+                }
+            }
+
+            validate(config, "rule-tester", id => (id === ruleName ? rule : null));
+
+            // Verify the code.
+            const { getComments, applyLanguageOptions, applyInlineConfig, finalize } = SourceCode.prototype;
+            const originalCurrentSegments = Object.getOwnPropertyDescriptor(CodePath.prototype, "currentSegments");
+            let messages;
+
+            try {
+                SourceCode.prototype.getComments = getCommentsDeprecation;
+                Object.defineProperty(CodePath.prototype, "currentSegments", {
+                    get() {
+                        emitCodePathCurrentSegmentsWarning(ruleName);
+                        return originalCurrentSegments.get.call(this);
+                    }
+                });
+
+                forbiddenMethods.forEach(methodName => {
+                    SourceCode.prototype[methodName] = throwForbiddenMethodError(methodName);
+                });
+
+                messages = linter.verify(code, config, filename);
+            } finally {
+                SourceCode.prototype.getComments = getComments;
+                Object.defineProperty(CodePath.prototype, "currentSegments", originalCurrentSegments);
+                SourceCode.prototype.applyInlineConfig = applyInlineConfig;
+                SourceCode.prototype.applyLanguageOptions = applyLanguageOptions;
+                SourceCode.prototype.finalize = finalize;
+            }
+
+            const fatalErrorMessage = messages.find(m => m.fatal);
+
+            assert(!fatalErrorMessage, `A fatal parsing error occurred: ${fatalErrorMessage && fatalErrorMessage.message}`);
+
+            // Verify if autofix makes a syntax error or not.
+            if (messages.some(m => m.fix)) {
+                output = SourceCodeFixer.applyFixes(code, messages).output;
+                const errorMessageInFix = linter.verify(output, config, filename).find(m => m.fatal);
+
+                assert(!errorMessageInFix, [
+                    "A fatal parsing error occurred in autofix.",
+                    `Error: ${errorMessageInFix && errorMessageInFix.message}`,
+                    "Autofix output:",
+                    output
+                ].join("\n"));
+            } else {
+                output = code;
+            }
+
+            return {
+                messages,
+                output,
+                beforeAST,
+                afterAST: cloneDeeplyExcludesParent(afterAST)
+            };
+        }
+
+        /**
+         * Check if the AST was changed
+         * @param {ASTNode} beforeAST AST node before running
+         * @param {ASTNode} afterAST AST node after running
+         * @returns {void}
+         * @private
+         */
+        function assertASTDidntChange(beforeAST, afterAST) {
+            if (!equal(beforeAST, afterAST)) {
+                assert.fail("Rule should not modify AST.");
+            }
+        }
+
+        /**
+         * Check if the template is valid or not
+         * all valid cases go through this
+         * @param {string|Object} item Item to run the rule against
+         * @returns {void}
+         * @private
+         */
+        function testValidTemplate(item) {
+            const code = typeof item === "object" ? item.code : item;
+
+            assert.ok(typeof code === "string", "Test case must specify a string value for 'code'");
+            if (item.name) {
+                assert.ok(typeof item.name === "string", "Optional test case property 'name' must be a string");
+            }
+
+            const result = runRuleForItem(item);
+            const messages = result.messages;
+
+            assert.strictEqual(messages.length, 0, util.format("Should have no errors but had %d: %s",
+                messages.length,
+                util.inspect(messages)));
+
+            assertASTDidntChange(result.beforeAST, result.afterAST);
+        }
+
+        /**
+         * Asserts that the message matches its expected value. If the expected
+         * value is a regular expression, it is checked against the actual
+         * value.
+         * @param {string} actual Actual value
+         * @param {string|RegExp} expected Expected value
+         * @returns {void}
+         * @private
+         */
+        function assertMessageMatches(actual, expected) {
+            if (expected instanceof RegExp) {
+
+                // assert.js doesn't have a built-in RegExp match function
+                assert.ok(
+                    expected.test(actual),
+                    `Expected '${actual}' to match ${expected}`
+                );
+            } else {
+                assert.strictEqual(actual, expected);
+            }
+        }
+
+        /**
+         * Check if the template is invalid or not
+         * all invalid cases go through this.
+         * @param {string|Object} item Item to run the rule against
+         * @returns {void}
+         * @private
+         */
+        function testInvalidTemplate(item) {
+            assert.ok(typeof item.code === "string", "Test case must specify a string value for 'code'");
+            if (item.name) {
+                assert.ok(typeof item.name === "string", "Optional test case property 'name' must be a string");
+            }
+            assert.ok(item.errors || item.errors === 0,
+                `Did not specify errors for an invalid test of ${ruleName}`);
+
+            if (Array.isArray(item.errors) && item.errors.length === 0) {
+                assert.fail("Invalid cases must have at least one error");
+            }
+
+            const ruleHasMetaMessages = hasOwnProperty(rule, "meta") && hasOwnProperty(rule.meta, "messages");
+            const friendlyIDList = ruleHasMetaMessages ? `[${Object.keys(rule.meta.messages).map(key => `'${key}'`).join(", ")}]` : null;
+
+            const result = runRuleForItem(item);
+            const messages = result.messages;
+
+            if (typeof item.errors === "number") {
+
+                if (item.errors === 0) {
+                    assert.fail("Invalid cases must have 'error' value greater than 0");
+                }
+
+                assert.strictEqual(messages.length, item.errors, util.format("Should have %d error%s but had %d: %s",
+                    item.errors,
+                    item.errors === 1 ? "" : "s",
+                    messages.length,
+                    util.inspect(messages)));
+            } else {
+                assert.strictEqual(
+                    messages.length, item.errors.length, util.format(
+                        "Should have %d error%s but had %d: %s",
+                        item.errors.length,
+                        item.errors.length === 1 ? "" : "s",
+                        messages.length,
+                        util.inspect(messages)
+                    )
+                );
+
+                const hasMessageOfThisRule = messages.some(m => m.ruleId === ruleName);
+
+                for (let i = 0, l = item.errors.length; i < l; i++) {
+                    const error = item.errors[i];
+                    const message = messages[i];
+
+                    assert(hasMessageOfThisRule, "Error rule name should be the same as the name of the rule being tested");
+
+                    if (typeof error === "string" || error instanceof RegExp) {
+
+                        // Just an error message.
+                        assertMessageMatches(message.message, error);
+                    } else if (typeof error === "object" && error !== null) {
+
+                        /*
+                         * Error object.
+                         * This may have a message, messageId, data, node type, line, and/or
+                         * column.
+                         */
+
+                        Object.keys(error).forEach(propertyName => {
+                            assert.ok(
+                                errorObjectParameters.has(propertyName),
+                                `Invalid error property name '${propertyName}'. Expected one of ${friendlyErrorObjectParameterList}.`
+                            );
+                        });
+
+                        if (hasOwnProperty(error, "message")) {
+                            assert.ok(!hasOwnProperty(error, "messageId"), "Error should not specify both 'message' and a 'messageId'.");
+                            assert.ok(!hasOwnProperty(error, "data"), "Error should not specify both 'data' and 'message'.");
+                            assertMessageMatches(message.message, error.message);
+                        } else if (hasOwnProperty(error, "messageId")) {
+                            assert.ok(
+                                ruleHasMetaMessages,
+                                "Error can not use 'messageId' if rule under test doesn't define 'meta.messages'."
+                            );
+                            if (!hasOwnProperty(rule.meta.messages, error.messageId)) {
+                                assert(false, `Invalid messageId '${error.messageId}'. Expected one of ${friendlyIDList}.`);
+                            }
+                            assert.strictEqual(
+                                message.messageId,
+                                error.messageId,
+                                `messageId '${message.messageId}' does not match expected messageId '${error.messageId}'.`
+                            );
+                            if (hasOwnProperty(error, "data")) {
+
+                                /*
+                                 *  if data was provided, then directly compare the returned message to a synthetic
+                                 *  interpolated message using the same message ID and data provided in the test.
+                                 *  See https://github.com/eslint/eslint/issues/9890 for context.
+                                 */
+                                const unformattedOriginalMessage = rule.meta.messages[error.messageId];
+                                const rehydratedMessage = interpolate(unformattedOriginalMessage, error.data);
+
+                                assert.strictEqual(
+                                    message.message,
+                                    rehydratedMessage,
+                                    `Hydrated message "${rehydratedMessage}" does not match "${message.message}"`
+                                );
+                            }
+                        }
+
+                        assert.ok(
+                            hasOwnProperty(error, "data") ? hasOwnProperty(error, "messageId") : true,
+                            "Error must specify 'messageId' if 'data' is used."
+                        );
+
+                        if (error.type) {
+                            assert.strictEqual(message.nodeType, error.type, `Error type should be ${error.type}, found ${message.nodeType}`);
+                        }
+
+                        if (hasOwnProperty(error, "line")) {
+                            assert.strictEqual(message.line, error.line, `Error line should be ${error.line}`);
+                        }
+
+                        if (hasOwnProperty(error, "column")) {
+                            assert.strictEqual(message.column, error.column, `Error column should be ${error.column}`);
+                        }
+
+                        if (hasOwnProperty(error, "endLine")) {
+                            assert.strictEqual(message.endLine, error.endLine, `Error endLine should be ${error.endLine}`);
+                        }
+
+                        if (hasOwnProperty(error, "endColumn")) {
+                            assert.strictEqual(message.endColumn, error.endColumn, `Error endColumn should be ${error.endColumn}`);
+                        }
+
+                        if (hasOwnProperty(error, "suggestions")) {
+
+                            // Support asserting there are no suggestions
+                            if (!error.suggestions || (Array.isArray(error.suggestions) && error.suggestions.length === 0)) {
+                                if (Array.isArray(message.suggestions) && message.suggestions.length > 0) {
+                                    assert.fail(`Error should have no suggestions on error with message: "${message.message}"`);
+                                }
+                            } else {
+                                assert.strictEqual(Array.isArray(message.suggestions), true, `Error should have an array of suggestions. Instead received "${message.suggestions}" on error with message: "${message.message}"`);
+                                assert.strictEqual(message.suggestions.length, error.suggestions.length, `Error should have ${error.suggestions.length} suggestions. Instead found ${message.suggestions.length} suggestions`);
+
+                                error.suggestions.forEach((expectedSuggestion, index) => {
+                                    assert.ok(
+                                        typeof expectedSuggestion === "object" && expectedSuggestion !== null,
+                                        "Test suggestion in 'suggestions' array must be an object."
+                                    );
+                                    Object.keys(expectedSuggestion).forEach(propertyName => {
+                                        assert.ok(
+                                            suggestionObjectParameters.has(propertyName),
+                                            `Invalid suggestion property name '${propertyName}'. Expected one of ${friendlySuggestionObjectParameterList}.`
+                                        );
+                                    });
+
+                                    const actualSuggestion = message.suggestions[index];
+                                    const suggestionPrefix = `Error Suggestion at index ${index} :`;
+
+                                    if (hasOwnProperty(expectedSuggestion, "desc")) {
+                                        assert.ok(
+                                            !hasOwnProperty(expectedSuggestion, "data"),
+                                            `${suggestionPrefix} Test should not specify both 'desc' and 'data'.`
+                                        );
+                                        assert.strictEqual(
+                                            actualSuggestion.desc,
+                                            expectedSuggestion.desc,
+                                            `${suggestionPrefix} desc should be "${expectedSuggestion.desc}" but got "${actualSuggestion.desc}" instead.`
+                                        );
+                                    }
+
+                                    if (hasOwnProperty(expectedSuggestion, "messageId")) {
+                                        assert.ok(
+                                            ruleHasMetaMessages,
+                                            `${suggestionPrefix} Test can not use 'messageId' if rule under test doesn't define 'meta.messages'.`
+                                        );
+                                        assert.ok(
+                                            hasOwnProperty(rule.meta.messages, expectedSuggestion.messageId),
+                                            `${suggestionPrefix} Test has invalid messageId '${expectedSuggestion.messageId}', the rule under test allows only one of ${friendlyIDList}.`
+                                        );
+                                        assert.strictEqual(
+                                            actualSuggestion.messageId,
+                                            expectedSuggestion.messageId,
+                                            `${suggestionPrefix} messageId should be '${expectedSuggestion.messageId}' but got '${actualSuggestion.messageId}' instead.`
+                                        );
+                                        if (hasOwnProperty(expectedSuggestion, "data")) {
+                                            const unformattedMetaMessage = rule.meta.messages[expectedSuggestion.messageId];
+                                            const rehydratedDesc = interpolate(unformattedMetaMessage, expectedSuggestion.data);
+
+                                            assert.strictEqual(
+                                                actualSuggestion.desc,
+                                                rehydratedDesc,
+                                                `${suggestionPrefix} Hydrated test desc "${rehydratedDesc}" does not match received desc "${actualSuggestion.desc}".`
+                                            );
+                                        }
+                                    } else {
+                                        assert.ok(
+                                            !hasOwnProperty(expectedSuggestion, "data"),
+                                            `${suggestionPrefix} Test must specify 'messageId' if 'data' is used.`
+                                        );
+                                    }
+
+                                    if (hasOwnProperty(expectedSuggestion, "output")) {
+                                        const codeWithAppliedSuggestion = SourceCodeFixer.applyFixes(item.code, [actualSuggestion]).output;
+
+                                        assert.strictEqual(codeWithAppliedSuggestion, expectedSuggestion.output, `Expected the applied suggestion fix to match the test suggestion output for suggestion at index: ${index} on error with message: "${message.message}"`);
+                                    }
+                                });
+                            }
+                        }
+                    } else {
+
+                        // Message was an unexpected type
+                        assert.fail(`Error should be a string, object, or RegExp, but found (${util.inspect(message)})`);
+                    }
+                }
+            }
+
+            if (hasOwnProperty(item, "output")) {
+                if (item.output === null) {
+                    assert.strictEqual(
+                        result.output,
+                        item.code,
+                        "Expected no autofixes to be suggested"
+                    );
+                } else {
+                    assert.strictEqual(result.output, item.output, "Output is incorrect.");
+                }
+            } else {
+                assert.strictEqual(
+                    result.output,
+                    item.code,
+                    "The rule fixed the code. Please add 'output' property."
+                );
+            }
+
+            assertASTDidntChange(result.beforeAST, result.afterAST);
+        }
+
+        /*
+         * This creates a mocha test suite and pipes all supplied info through
+         * one of the templates above.
+         * The test suites for valid/invalid are created conditionally as
+         * test runners (eg. vitest) fail for empty test suites.
+         */
+        this.constructor.describe(ruleName, () => {
+            if (test.valid.length > 0) {
+                this.constructor.describe("valid", () => {
+                    test.valid.forEach(valid => {
+                        this.constructor[valid.only ? "itOnly" : "it"](
+                            sanitize(typeof valid === "object" ? valid.name || valid.code : valid),
+                            () => {
+                                testValidTemplate(valid);
+                            }
+                        );
+                    });
+                });
+            }
+
+            if (test.invalid.length > 0) {
+                this.constructor.describe("invalid", () => {
+                    test.invalid.forEach(invalid => {
+                        this.constructor[invalid.only ? "itOnly" : "it"](
+                            sanitize(invalid.name || invalid.code),
+                            () => {
+                                testInvalidTemplate(invalid);
+                            }
+                        );
+                    });
+                });
+            }
+        });
+    }
+}
+
+RuleTester[DESCRIBE] = RuleTester[IT] = RuleTester[IT_ONLY] = null;
+
+module.exports = RuleTester;
Index: frontend/node_modules/eslint/lib/rules/accessor-pairs.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/accessor-pairs.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/accessor-pairs.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,346 @@
+/**
+ * @fileoverview Rule to enforce getter and setter pairs in objects and classes.
+ * @author Gyandeep Singh
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/**
+ * Property name if it can be computed statically, otherwise the list of the tokens of the key node.
+ * @typedef {string|Token[]} Key
+ */
+
+/**
+ * Accessor nodes with the same key.
+ * @typedef {Object} AccessorData
+ * @property {Key} key Accessor's key
+ * @property {ASTNode[]} getters List of getter nodes.
+ * @property {ASTNode[]} setters List of setter nodes.
+ */
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not the given lists represent the equal tokens in the same order.
+ * Tokens are compared by their properties, not by instance.
+ * @param {Token[]} left First list of tokens.
+ * @param {Token[]} right Second list of tokens.
+ * @returns {boolean} `true` if the lists have same tokens.
+ */
+function areEqualTokenLists(left, right) {
+    if (left.length !== right.length) {
+        return false;
+    }
+
+    for (let i = 0; i < left.length; i++) {
+        const leftToken = left[i],
+            rightToken = right[i];
+
+        if (leftToken.type !== rightToken.type || leftToken.value !== rightToken.value) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+/**
+ * Checks whether or not the given keys are equal.
+ * @param {Key} left First key.
+ * @param {Key} right Second key.
+ * @returns {boolean} `true` if the keys are equal.
+ */
+function areEqualKeys(left, right) {
+    if (typeof left === "string" && typeof right === "string") {
+
+        // Statically computed names.
+        return left === right;
+    }
+    if (Array.isArray(left) && Array.isArray(right)) {
+
+        // Token lists.
+        return areEqualTokenLists(left, right);
+    }
+
+    return false;
+}
+
+/**
+ * Checks whether or not a given node is of an accessor kind ('get' or 'set').
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} `true` if the node is of an accessor kind.
+ */
+function isAccessorKind(node) {
+    return node.kind === "get" || node.kind === "set";
+}
+
+/**
+ * Checks whether or not a given node is an argument of a specified method call.
+ * @param {ASTNode} node A node to check.
+ * @param {number} index An expected index of the node in arguments.
+ * @param {string} object An expected name of the object of the method.
+ * @param {string} property An expected name of the method.
+ * @returns {boolean} `true` if the node is an argument of the specified method call.
+ */
+function isArgumentOfMethodCall(node, index, object, property) {
+    const parent = node.parent;
+
+    return (
+        parent.type === "CallExpression" &&
+        astUtils.isSpecificMemberAccess(parent.callee, object, property) &&
+        parent.arguments[index] === node
+    );
+}
+
+/**
+ * Checks whether or not a given node is a property descriptor.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} `true` if the node is a property descriptor.
+ */
+function isPropertyDescriptor(node) {
+
+    // Object.defineProperty(obj, "foo", {set: ...})
+    if (isArgumentOfMethodCall(node, 2, "Object", "defineProperty") ||
+        isArgumentOfMethodCall(node, 2, "Reflect", "defineProperty")
+    ) {
+        return true;
+    }
+
+    /*
+     * Object.defineProperties(obj, {foo: {set: ...}})
+     * Object.create(proto, {foo: {set: ...}})
+     */
+    const grandparent = node.parent.parent;
+
+    return grandparent.type === "ObjectExpression" && (
+        isArgumentOfMethodCall(grandparent, 1, "Object", "create") ||
+        isArgumentOfMethodCall(grandparent, 1, "Object", "defineProperties")
+    );
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce getter and setter pairs in objects and classes",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/accessor-pairs"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                getWithoutSet: {
+                    type: "boolean",
+                    default: false
+                },
+                setWithoutGet: {
+                    type: "boolean",
+                    default: true
+                },
+                enforceForClassMembers: {
+                    type: "boolean",
+                    default: true
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            missingGetterInPropertyDescriptor: "Getter is not present in property descriptor.",
+            missingSetterInPropertyDescriptor: "Setter is not present in property descriptor.",
+            missingGetterInObjectLiteral: "Getter is not present for {{ name }}.",
+            missingSetterInObjectLiteral: "Setter is not present for {{ name }}.",
+            missingGetterInClass: "Getter is not present for class {{ name }}.",
+            missingSetterInClass: "Setter is not present for class {{ name }}."
+        }
+    },
+    create(context) {
+        const config = context.options[0] || {};
+        const checkGetWithoutSet = config.getWithoutSet === true;
+        const checkSetWithoutGet = config.setWithoutGet !== false;
+        const enforceForClassMembers = config.enforceForClassMembers !== false;
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Reports the given node.
+         * @param {ASTNode} node The node to report.
+         * @param {string} messageKind "missingGetter" or "missingSetter".
+         * @returns {void}
+         * @private
+         */
+        function report(node, messageKind) {
+            if (node.type === "Property") {
+                context.report({
+                    node,
+                    messageId: `${messageKind}InObjectLiteral`,
+                    loc: astUtils.getFunctionHeadLoc(node.value, sourceCode),
+                    data: { name: astUtils.getFunctionNameWithKind(node.value) }
+                });
+            } else if (node.type === "MethodDefinition") {
+                context.report({
+                    node,
+                    messageId: `${messageKind}InClass`,
+                    loc: astUtils.getFunctionHeadLoc(node.value, sourceCode),
+                    data: { name: astUtils.getFunctionNameWithKind(node.value) }
+                });
+            } else {
+                context.report({
+                    node,
+                    messageId: `${messageKind}InPropertyDescriptor`
+                });
+            }
+        }
+
+        /**
+         * Reports each of the nodes in the given list using the same messageId.
+         * @param {ASTNode[]} nodes Nodes to report.
+         * @param {string} messageKind "missingGetter" or "missingSetter".
+         * @returns {void}
+         * @private
+         */
+        function reportList(nodes, messageKind) {
+            for (const node of nodes) {
+                report(node, messageKind);
+            }
+        }
+
+        /**
+         * Checks accessor pairs in the given list of nodes.
+         * @param {ASTNode[]} nodes The list to check.
+         * @returns {void}
+         * @private
+         */
+        function checkList(nodes) {
+            const accessors = [];
+            let found = false;
+
+            for (let i = 0; i < nodes.length; i++) {
+                const node = nodes[i];
+
+                if (isAccessorKind(node)) {
+
+                    // Creates a new `AccessorData` object for the given getter or setter node.
+                    const name = astUtils.getStaticPropertyName(node);
+                    const key = (name !== null) ? name : sourceCode.getTokens(node.key);
+
+                    // Merges the given `AccessorData` object into the given accessors list.
+                    for (let j = 0; j < accessors.length; j++) {
+                        const accessor = accessors[j];
+
+                        if (areEqualKeys(accessor.key, key)) {
+                            accessor.getters.push(...node.kind === "get" ? [node] : []);
+                            accessor.setters.push(...node.kind === "set" ? [node] : []);
+                            found = true;
+                            break;
+                        }
+                    }
+                    if (!found) {
+                        accessors.push({
+                            key,
+                            getters: node.kind === "get" ? [node] : [],
+                            setters: node.kind === "set" ? [node] : []
+                        });
+                    }
+                    found = false;
+                }
+            }
+
+            for (const { getters, setters } of accessors) {
+                if (checkSetWithoutGet && setters.length && !getters.length) {
+                    reportList(setters, "missingGetter");
+                }
+                if (checkGetWithoutSet && getters.length && !setters.length) {
+                    reportList(getters, "missingSetter");
+                }
+            }
+        }
+
+        /**
+         * Checks accessor pairs in an object literal.
+         * @param {ASTNode} node `ObjectExpression` node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkObjectLiteral(node) {
+            checkList(node.properties.filter(p => p.type === "Property"));
+        }
+
+        /**
+         * Checks accessor pairs in a property descriptor.
+         * @param {ASTNode} node Property descriptor `ObjectExpression` node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkPropertyDescriptor(node) {
+            const namesToCheck = new Set(node.properties
+                .filter(p => p.type === "Property" && p.kind === "init" && !p.computed)
+                .map(({ key }) => key.name));
+
+            const hasGetter = namesToCheck.has("get");
+            const hasSetter = namesToCheck.has("set");
+
+            if (checkSetWithoutGet && hasSetter && !hasGetter) {
+                report(node, "missingGetter");
+            }
+            if (checkGetWithoutSet && hasGetter && !hasSetter) {
+                report(node, "missingSetter");
+            }
+        }
+
+        /**
+         * Checks the given object expression as an object literal and as a possible property descriptor.
+         * @param {ASTNode} node `ObjectExpression` node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkObjectExpression(node) {
+            checkObjectLiteral(node);
+            if (isPropertyDescriptor(node)) {
+                checkPropertyDescriptor(node);
+            }
+        }
+
+        /**
+         * Checks the given class body.
+         * @param {ASTNode} node `ClassBody` node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkClassBody(node) {
+            const methodDefinitions = node.body.filter(m => m.type === "MethodDefinition");
+
+            checkList(methodDefinitions.filter(m => m.static));
+            checkList(methodDefinitions.filter(m => !m.static));
+        }
+
+        const listeners = {};
+
+        if (checkSetWithoutGet || checkGetWithoutSet) {
+            listeners.ObjectExpression = checkObjectExpression;
+            if (enforceForClassMembers) {
+                listeners.ClassBody = checkClassBody;
+            }
+        }
+
+        return listeners;
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/array-bracket-newline.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/array-bracket-newline.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/array-bracket-newline.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,261 @@
+/**
+ * @fileoverview Rule to enforce linebreaks after open and before close array brackets
+ * @author Jan Peer Stöcklmair <https://github.com/JPeer264>
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce linebreaks after opening and before closing array brackets",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/array-bracket-newline"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["always", "never", "consistent"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            multiline: {
+                                type: "boolean"
+                            },
+                            minItems: {
+                                type: ["integer", "null"],
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            unexpectedOpeningLinebreak: "There should be no linebreak after '['.",
+            unexpectedClosingLinebreak: "There should be no linebreak before ']'.",
+            missingOpeningLinebreak: "A linebreak is required after '['.",
+            missingClosingLinebreak: "A linebreak is required before ']'."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+
+        //----------------------------------------------------------------------
+        // Helpers
+        //----------------------------------------------------------------------
+
+        /**
+         * Normalizes a given option value.
+         * @param {string|Object|undefined} option An option value to parse.
+         * @returns {{multiline: boolean, minItems: number}} Normalized option object.
+         */
+        function normalizeOptionValue(option) {
+            let consistent = false;
+            let multiline = false;
+            let minItems = 0;
+
+            if (option) {
+                if (option === "consistent") {
+                    consistent = true;
+                    minItems = Number.POSITIVE_INFINITY;
+                } else if (option === "always" || option.minItems === 0) {
+                    minItems = 0;
+                } else if (option === "never") {
+                    minItems = Number.POSITIVE_INFINITY;
+                } else {
+                    multiline = Boolean(option.multiline);
+                    minItems = option.minItems || Number.POSITIVE_INFINITY;
+                }
+            } else {
+                consistent = false;
+                multiline = true;
+                minItems = Number.POSITIVE_INFINITY;
+            }
+
+            return { consistent, multiline, minItems };
+        }
+
+        /**
+         * Normalizes a given option value.
+         * @param {string|Object|undefined} options An option value to parse.
+         * @returns {{ArrayExpression: {multiline: boolean, minItems: number}, ArrayPattern: {multiline: boolean, minItems: number}}} Normalized option object.
+         */
+        function normalizeOptions(options) {
+            const value = normalizeOptionValue(options);
+
+            return { ArrayExpression: value, ArrayPattern: value };
+        }
+
+        /**
+         * Reports that there shouldn't be a linebreak after the first token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportNoBeginningLinebreak(node, token) {
+            context.report({
+                node,
+                loc: token.loc,
+                messageId: "unexpectedOpeningLinebreak",
+                fix(fixer) {
+                    const nextToken = sourceCode.getTokenAfter(token, { includeComments: true });
+
+                    if (astUtils.isCommentToken(nextToken)) {
+                        return null;
+                    }
+
+                    return fixer.removeRange([token.range[1], nextToken.range[0]]);
+                }
+            });
+        }
+
+        /**
+         * Reports that there shouldn't be a linebreak before the last token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportNoEndingLinebreak(node, token) {
+            context.report({
+                node,
+                loc: token.loc,
+                messageId: "unexpectedClosingLinebreak",
+                fix(fixer) {
+                    const previousToken = sourceCode.getTokenBefore(token, { includeComments: true });
+
+                    if (astUtils.isCommentToken(previousToken)) {
+                        return null;
+                    }
+
+                    return fixer.removeRange([previousToken.range[1], token.range[0]]);
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a linebreak after the first token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredBeginningLinebreak(node, token) {
+            context.report({
+                node,
+                loc: token.loc,
+                messageId: "missingOpeningLinebreak",
+                fix(fixer) {
+                    return fixer.insertTextAfter(token, "\n");
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a linebreak before the last token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredEndingLinebreak(node, token) {
+            context.report({
+                node,
+                loc: token.loc,
+                messageId: "missingClosingLinebreak",
+                fix(fixer) {
+                    return fixer.insertTextBefore(token, "\n");
+                }
+            });
+        }
+
+        /**
+         * Reports a given node if it violated this rule.
+         * @param {ASTNode} node A node to check. This is an ArrayExpression node or an ArrayPattern node.
+         * @returns {void}
+         */
+        function check(node) {
+            const elements = node.elements;
+            const normalizedOptions = normalizeOptions(context.options[0]);
+            const options = normalizedOptions[node.type];
+            const openBracket = sourceCode.getFirstToken(node);
+            const closeBracket = sourceCode.getLastToken(node);
+            const firstIncComment = sourceCode.getTokenAfter(openBracket, { includeComments: true });
+            const lastIncComment = sourceCode.getTokenBefore(closeBracket, { includeComments: true });
+            const first = sourceCode.getTokenAfter(openBracket);
+            const last = sourceCode.getTokenBefore(closeBracket);
+
+            const needsLinebreaks = (
+                elements.length >= options.minItems ||
+                (
+                    options.multiline &&
+                    elements.length > 0 &&
+                    firstIncComment.loc.start.line !== lastIncComment.loc.end.line
+                ) ||
+                (
+                    elements.length === 0 &&
+                    firstIncComment.type === "Block" &&
+                    firstIncComment.loc.start.line !== lastIncComment.loc.end.line &&
+                    firstIncComment === lastIncComment
+                ) ||
+                (
+                    options.consistent &&
+                    openBracket.loc.end.line !== first.loc.start.line
+                )
+            );
+
+            /*
+             * Use tokens or comments to check multiline or not.
+             * But use only tokens to check whether linebreaks are needed.
+             * This allows:
+             *     var arr = [ // eslint-disable-line foo
+             *         'a'
+             *     ]
+             */
+
+            if (needsLinebreaks) {
+                if (astUtils.isTokenOnSameLine(openBracket, first)) {
+                    reportRequiredBeginningLinebreak(node, openBracket);
+                }
+                if (astUtils.isTokenOnSameLine(last, closeBracket)) {
+                    reportRequiredEndingLinebreak(node, closeBracket);
+                }
+            } else {
+                if (!astUtils.isTokenOnSameLine(openBracket, first)) {
+                    reportNoBeginningLinebreak(node, openBracket);
+                }
+                if (!astUtils.isTokenOnSameLine(last, closeBracket)) {
+                    reportNoEndingLinebreak(node, closeBracket);
+                }
+            }
+        }
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+            ArrayPattern: check,
+            ArrayExpression: check
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/array-bracket-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/array-bracket-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/array-bracket-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,244 @@
+/**
+ * @fileoverview Disallows or enforces spaces inside of array brackets.
+ * @author Jamund Ferguson
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent spacing inside array brackets",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/array-bracket-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            },
+            {
+                type: "object",
+                properties: {
+                    singleValue: {
+                        type: "boolean"
+                    },
+                    objectsInArrays: {
+                        type: "boolean"
+                    },
+                    arraysInArrays: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedSpaceAfter: "There should be no space after '{{tokenValue}}'.",
+            unexpectedSpaceBefore: "There should be no space before '{{tokenValue}}'.",
+            missingSpaceAfter: "A space is required after '{{tokenValue}}'.",
+            missingSpaceBefore: "A space is required before '{{tokenValue}}'."
+        }
+    },
+    create(context) {
+        const spaced = context.options[0] === "always",
+            sourceCode = context.sourceCode;
+
+        /**
+         * Determines whether an option is set, relative to the spacing option.
+         * If spaced is "always", then check whether option is set to false.
+         * If spaced is "never", then check whether option is set to true.
+         * @param {Object} option The option to exclude.
+         * @returns {boolean} Whether or not the property is excluded.
+         */
+        function isOptionSet(option) {
+            return context.options[1] ? context.options[1][option] === !spaced : false;
+        }
+
+        const options = {
+            spaced,
+            singleElementException: isOptionSet("singleValue"),
+            objectsInArraysException: isOptionSet("objectsInArrays"),
+            arraysInArraysException: isOptionSet("arraysInArrays")
+        };
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Reports that there shouldn't be a space after the first token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportNoBeginningSpace(node, token) {
+            const nextToken = sourceCode.getTokenAfter(token);
+
+            context.report({
+                node,
+                loc: { start: token.loc.end, end: nextToken.loc.start },
+                messageId: "unexpectedSpaceAfter",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.removeRange([token.range[1], nextToken.range[0]]);
+                }
+            });
+        }
+
+        /**
+         * Reports that there shouldn't be a space before the last token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportNoEndingSpace(node, token) {
+            const previousToken = sourceCode.getTokenBefore(token);
+
+            context.report({
+                node,
+                loc: { start: previousToken.loc.end, end: token.loc.start },
+                messageId: "unexpectedSpaceBefore",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.removeRange([previousToken.range[1], token.range[0]]);
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a space after the first token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredBeginningSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc,
+                messageId: "missingSpaceAfter",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.insertTextAfter(token, " ");
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a space before the last token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredEndingSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc,
+                messageId: "missingSpaceBefore",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.insertTextBefore(token, " ");
+                }
+            });
+        }
+
+        /**
+         * Determines if a node is an object type
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} Whether or not the node is an object type.
+         */
+        function isObjectType(node) {
+            return node && (node.type === "ObjectExpression" || node.type === "ObjectPattern");
+        }
+
+        /**
+         * Determines if a node is an array type
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} Whether or not the node is an array type.
+         */
+        function isArrayType(node) {
+            return node && (node.type === "ArrayExpression" || node.type === "ArrayPattern");
+        }
+
+        /**
+         * Validates the spacing around array brackets
+         * @param {ASTNode} node The node we're checking for spacing
+         * @returns {void}
+         */
+        function validateArraySpacing(node) {
+            if (options.spaced && node.elements.length === 0) {
+                return;
+            }
+
+            const first = sourceCode.getFirstToken(node),
+                second = sourceCode.getFirstToken(node, 1),
+                last = node.typeAnnotation
+                    ? sourceCode.getTokenBefore(node.typeAnnotation)
+                    : sourceCode.getLastToken(node),
+                penultimate = sourceCode.getTokenBefore(last),
+                firstElement = node.elements[0],
+                lastElement = node.elements[node.elements.length - 1];
+
+            const openingBracketMustBeSpaced =
+                options.objectsInArraysException && isObjectType(firstElement) ||
+                options.arraysInArraysException && isArrayType(firstElement) ||
+                options.singleElementException && node.elements.length === 1
+                    ? !options.spaced : options.spaced;
+
+            const closingBracketMustBeSpaced =
+                options.objectsInArraysException && isObjectType(lastElement) ||
+                options.arraysInArraysException && isArrayType(lastElement) ||
+                options.singleElementException && node.elements.length === 1
+                    ? !options.spaced : options.spaced;
+
+            if (astUtils.isTokenOnSameLine(first, second)) {
+                if (openingBracketMustBeSpaced && !sourceCode.isSpaceBetweenTokens(first, second)) {
+                    reportRequiredBeginningSpace(node, first);
+                }
+                if (!openingBracketMustBeSpaced && sourceCode.isSpaceBetweenTokens(first, second)) {
+                    reportNoBeginningSpace(node, first);
+                }
+            }
+
+            if (first !== penultimate && astUtils.isTokenOnSameLine(penultimate, last)) {
+                if (closingBracketMustBeSpaced && !sourceCode.isSpaceBetweenTokens(penultimate, last)) {
+                    reportRequiredEndingSpace(node, last);
+                }
+                if (!closingBracketMustBeSpaced && sourceCode.isSpaceBetweenTokens(penultimate, last)) {
+                    reportNoEndingSpace(node, last);
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            ArrayPattern: validateArraySpacing,
+            ArrayExpression: validateArraySpacing
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/array-callback-return.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/array-callback-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/array-callback-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,446 @@
+/**
+ * @fileoverview Rule to enforce return statements in callbacks of array's methods
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const TARGET_NODE_TYPE = /^(?:Arrow)?FunctionExpression$/u;
+const TARGET_METHODS = /^(?:every|filter|find(?:Last)?(?:Index)?|flatMap|forEach|map|reduce(?:Right)?|some|sort|toSorted)$/u;
+
+/**
+ * Checks a given node is a member access which has the specified name's
+ * property.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} `true` if the node is a member access which has
+ *      the specified name's property. The node may be a `(Chain|Member)Expression` node.
+ */
+function isTargetMethod(node) {
+    return astUtils.isSpecificMemberAccess(node, null, TARGET_METHODS);
+}
+
+/**
+ * Checks all segments in a set and returns true if any are reachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if any segment is reachable; false otherwise.
+ */
+function isAnySegmentReachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+/**
+ * Returns a human-legible description of an array method
+ * @param {string} arrayMethodName A method name to fully qualify
+ * @returns {string} the method name prefixed with `Array.` if it is a class method,
+ *      or else `Array.prototype.` if it is an instance method.
+ */
+function fullMethodName(arrayMethodName) {
+    if (["from", "of", "isArray"].includes(arrayMethodName)) {
+        return "Array.".concat(arrayMethodName);
+    }
+    return "Array.prototype.".concat(arrayMethodName);
+}
+
+/**
+ * Checks whether or not a given node is a function expression which is the
+ * callback of an array method, returning the method name.
+ * @param {ASTNode} node A node to check. This is one of
+ *      FunctionExpression or ArrowFunctionExpression.
+ * @returns {string} The method name if the node is a callback method,
+ *      null otherwise.
+ */
+function getArrayMethodName(node) {
+    let currentNode = node;
+
+    while (currentNode) {
+        const parent = currentNode.parent;
+
+        switch (parent.type) {
+
+            /*
+             * Looks up the destination. e.g.,
+             * foo.every(nativeFoo || function foo() { ... });
+             */
+            case "LogicalExpression":
+            case "ConditionalExpression":
+            case "ChainExpression":
+                currentNode = parent;
+                break;
+
+            /*
+             * If the upper function is IIFE, checks the destination of the return value.
+             * e.g.
+             *   foo.every((function() {
+             *     // setup...
+             *     return function callback() { ... };
+             *   })());
+             */
+            case "ReturnStatement": {
+                const func = astUtils.getUpperFunction(parent);
+
+                if (func === null || !astUtils.isCallee(func)) {
+                    return null;
+                }
+                currentNode = func.parent;
+                break;
+            }
+
+            /*
+             * e.g.
+             *   Array.from([], function() {});
+             *   list.every(function() {});
+             */
+            case "CallExpression":
+                if (astUtils.isArrayFromMethod(parent.callee)) {
+                    if (
+                        parent.arguments.length >= 2 &&
+                        parent.arguments[1] === currentNode
+                    ) {
+                        return "from";
+                    }
+                }
+                if (isTargetMethod(parent.callee)) {
+                    if (
+                        parent.arguments.length >= 1 &&
+                        parent.arguments[0] === currentNode
+                    ) {
+                        return astUtils.getStaticPropertyName(parent.callee);
+                    }
+                }
+                return null;
+
+            // Otherwise this node is not target.
+            default:
+                return null;
+        }
+    }
+
+    /* c8 ignore next */
+    return null;
+}
+
+/**
+ * Checks if the given node is a void expression.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} - `true` if the node is a void expression
+ */
+function isExpressionVoid(node) {
+    return node.type === "UnaryExpression" && node.operator === "void";
+}
+
+/**
+ * Fixes the linting error by prepending "void " to the given node
+ * @param {Object} sourceCode context given by context.sourceCode
+ * @param {ASTNode} node The node to fix.
+ * @param {Object} fixer The fixer object provided by ESLint.
+ * @returns {Array<Object>} - An array of fix objects to apply to the node.
+ */
+function voidPrependFixer(sourceCode, node, fixer) {
+
+    const requiresParens =
+
+        // prepending `void ` will fail if the node has a lower precedence than void
+        astUtils.getPrecedence(node) < astUtils.getPrecedence({ type: "UnaryExpression", operator: "void" }) &&
+
+        // check if there are parentheses around the node to avoid redundant parentheses
+        !astUtils.isParenthesised(sourceCode, node);
+
+    // avoid parentheses issues
+    const returnOrArrowToken = sourceCode.getTokenBefore(
+        node,
+        node.parent.type === "ArrowFunctionExpression"
+            ? astUtils.isArrowToken
+
+            // isReturnToken
+            : token => token.type === "Keyword" && token.value === "return"
+    );
+
+    const firstToken = sourceCode.getTokenAfter(returnOrArrowToken);
+
+    const prependSpace =
+
+        // is return token, as => allows void to be adjacent
+        returnOrArrowToken.value === "return" &&
+
+        // If two tokens (return and "(") are adjacent
+        returnOrArrowToken.range[1] === firstToken.range[0];
+
+    return [
+        fixer.insertTextBefore(firstToken, `${prependSpace ? " " : ""}void ${requiresParens ? "(" : ""}`),
+        fixer.insertTextAfter(node, requiresParens ? ")" : "")
+    ];
+}
+
+/**
+ * Fixes the linting error by `wrapping {}` around the given node's body.
+ * @param {Object} sourceCode context given by context.sourceCode
+ * @param {ASTNode} node The node to fix.
+ * @param {Object} fixer The fixer object provided by ESLint.
+ * @returns {Array<Object>} - An array of fix objects to apply to the node.
+ */
+function curlyWrapFixer(sourceCode, node, fixer) {
+    const arrowToken = sourceCode.getTokenBefore(node.body, astUtils.isArrowToken);
+    const firstToken = sourceCode.getTokenAfter(arrowToken);
+    const lastToken = sourceCode.getLastToken(node);
+
+    return [
+        fixer.insertTextBefore(firstToken, "{"),
+        fixer.insertTextAfter(lastToken, "}")
+    ];
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Enforce `return` statements in callbacks of array methods",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/array-callback-return"
+        },
+
+        // eslint-disable-next-line eslint-plugin/require-meta-has-suggestions -- false positive
+        hasSuggestions: true,
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowImplicit: {
+                        type: "boolean",
+                        default: false
+                    },
+                    checkForEach: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowVoid: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            expectedAtEnd: "{{arrayMethodName}}() expects a value to be returned at the end of {{name}}.",
+            expectedInside: "{{arrayMethodName}}() expects a return value from {{name}}.",
+            expectedReturnValue: "{{arrayMethodName}}() expects a return value from {{name}}.",
+            expectedNoReturnValue: "{{arrayMethodName}}() expects no useless return value from {{name}}.",
+            wrapBraces: "Wrap the expression in `{}`.",
+            prependVoid: "Prepend `void` to the expression."
+        }
+    },
+
+    create(context) {
+
+        const options = context.options[0] || { allowImplicit: false, checkForEach: false, allowVoid: false };
+        const sourceCode = context.sourceCode;
+
+        let funcInfo = {
+            arrayMethodName: null,
+            upper: null,
+            codePath: null,
+            hasReturn: false,
+            shouldCheck: false,
+            node: null
+        };
+
+        /**
+         * Checks whether or not the last code path segment is reachable.
+         * Then reports this function if the segment is reachable.
+         *
+         * If the last code path segment is reachable, there are paths which are not
+         * returned or thrown.
+         * @param {ASTNode} node A node to check.
+         * @returns {void}
+         */
+        function checkLastSegment(node) {
+
+            if (!funcInfo.shouldCheck) {
+                return;
+            }
+
+            const messageAndSuggestions = { messageId: "", suggest: [] };
+
+            if (funcInfo.arrayMethodName === "forEach") {
+                if (options.checkForEach && node.type === "ArrowFunctionExpression" && node.expression) {
+
+                    if (options.allowVoid) {
+                        if (isExpressionVoid(node.body)) {
+                            return;
+                        }
+
+                        messageAndSuggestions.messageId = "expectedNoReturnValue";
+                        messageAndSuggestions.suggest = [
+                            {
+                                messageId: "wrapBraces",
+                                fix(fixer) {
+                                    return curlyWrapFixer(sourceCode, node, fixer);
+                                }
+                            },
+                            {
+                                messageId: "prependVoid",
+                                fix(fixer) {
+                                    return voidPrependFixer(sourceCode, node.body, fixer);
+                                }
+                            }
+                        ];
+                    } else {
+                        messageAndSuggestions.messageId = "expectedNoReturnValue";
+                        messageAndSuggestions.suggest = [{
+                            messageId: "wrapBraces",
+                            fix(fixer) {
+                                return curlyWrapFixer(sourceCode, node, fixer);
+                            }
+                        }];
+                    }
+                }
+            } else {
+                if (node.body.type === "BlockStatement" && isAnySegmentReachable(funcInfo.currentSegments)) {
+                    messageAndSuggestions.messageId = funcInfo.hasReturn ? "expectedAtEnd" : "expectedInside";
+                }
+            }
+
+            if (messageAndSuggestions.messageId) {
+                const name = astUtils.getFunctionNameWithKind(node);
+
+                context.report({
+                    node,
+                    loc: astUtils.getFunctionHeadLoc(node, sourceCode),
+                    messageId: messageAndSuggestions.messageId,
+                    data: { name, arrayMethodName: fullMethodName(funcInfo.arrayMethodName) },
+                    suggest: messageAndSuggestions.suggest.length !== 0 ? messageAndSuggestions.suggest : null
+                });
+            }
+        }
+
+        return {
+
+            // Stacks this function's information.
+            onCodePathStart(codePath, node) {
+
+                let methodName = null;
+
+                if (TARGET_NODE_TYPE.test(node.type)) {
+                    methodName = getArrayMethodName(node);
+                }
+
+                funcInfo = {
+                    arrayMethodName: methodName,
+                    upper: funcInfo,
+                    codePath,
+                    hasReturn: false,
+                    shouldCheck:
+                        methodName &&
+                        !node.async &&
+                        !node.generator,
+                    node,
+                    currentSegments: new Set()
+                };
+            },
+
+            // Pops this function's information.
+            onCodePathEnd() {
+                funcInfo = funcInfo.upper;
+            },
+
+            onUnreachableCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+            onCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+
+            // Checks the return statement is valid.
+            ReturnStatement(node) {
+
+                if (!funcInfo.shouldCheck) {
+                    return;
+                }
+
+                funcInfo.hasReturn = true;
+
+                const messageAndSuggestions = { messageId: "", suggest: [] };
+
+                if (funcInfo.arrayMethodName === "forEach") {
+
+                    // if checkForEach: true, returning a value at any path inside a forEach is not allowed
+                    if (options.checkForEach && node.argument) {
+
+                        if (options.allowVoid) {
+                            if (isExpressionVoid(node.argument)) {
+                                return;
+                            }
+
+                            messageAndSuggestions.messageId = "expectedNoReturnValue";
+                            messageAndSuggestions.suggest = [{
+                                messageId: "prependVoid",
+                                fix(fixer) {
+                                    return voidPrependFixer(sourceCode, node.argument, fixer);
+                                }
+                            }];
+                        } else {
+                            messageAndSuggestions.messageId = "expectedNoReturnValue";
+                        }
+                    }
+                } else {
+
+                    // if allowImplicit: false, should also check node.argument
+                    if (!options.allowImplicit && !node.argument) {
+                        messageAndSuggestions.messageId = "expectedReturnValue";
+                    }
+                }
+
+                if (messageAndSuggestions.messageId) {
+                    context.report({
+                        node,
+                        messageId: messageAndSuggestions.messageId,
+                        data: {
+                            name: astUtils.getFunctionNameWithKind(funcInfo.node),
+                            arrayMethodName: fullMethodName(funcInfo.arrayMethodName)
+                        },
+                        suggest: messageAndSuggestions.suggest.length !== 0 ? messageAndSuggestions.suggest : null
+                    });
+                }
+            },
+
+            // Reports a given function if the last path is reachable.
+            "FunctionExpression:exit": checkLastSegment,
+            "ArrowFunctionExpression:exit": checkLastSegment
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/array-element-newline.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/array-element-newline.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/array-element-newline.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,311 @@
+/**
+ * @fileoverview Rule to enforce line breaks after each array element
+ * @author Jan Peer Stöcklmair <https://github.com/JPeer264>
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce line breaks after each array element",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/array-element-newline"
+        },
+
+        fixable: "whitespace",
+
+        schema: {
+            definitions: {
+                basicConfig: {
+                    oneOf: [
+                        {
+                            enum: ["always", "never", "consistent"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                multiline: {
+                                    type: "boolean"
+                                },
+                                minItems: {
+                                    type: ["integer", "null"],
+                                    minimum: 0
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ]
+                }
+            },
+            type: "array",
+            items: [
+                {
+                    oneOf: [
+                        {
+                            $ref: "#/definitions/basicConfig"
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                ArrayExpression: {
+                                    $ref: "#/definitions/basicConfig"
+                                },
+                                ArrayPattern: {
+                                    $ref: "#/definitions/basicConfig"
+                                }
+                            },
+                            additionalProperties: false,
+                            minProperties: 1
+                        }
+                    ]
+                }
+            ]
+        },
+
+        messages: {
+            unexpectedLineBreak: "There should be no linebreak here.",
+            missingLineBreak: "There should be a linebreak after this element."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        //----------------------------------------------------------------------
+        // Helpers
+        //----------------------------------------------------------------------
+
+        /**
+         * Normalizes a given option value.
+         * @param {string|Object|undefined} providedOption An option value to parse.
+         * @returns {{multiline: boolean, minItems: number}} Normalized option object.
+         */
+        function normalizeOptionValue(providedOption) {
+            let consistent = false;
+            let multiline = false;
+            let minItems;
+
+            const option = providedOption || "always";
+
+            if (!option || option === "always" || option.minItems === 0) {
+                minItems = 0;
+            } else if (option === "never") {
+                minItems = Number.POSITIVE_INFINITY;
+            } else if (option === "consistent") {
+                consistent = true;
+                minItems = Number.POSITIVE_INFINITY;
+            } else {
+                multiline = Boolean(option.multiline);
+                minItems = option.minItems || Number.POSITIVE_INFINITY;
+            }
+
+            return { consistent, multiline, minItems };
+        }
+
+        /**
+         * Normalizes a given option value.
+         * @param {string|Object|undefined} options An option value to parse.
+         * @returns {{ArrayExpression: {multiline: boolean, minItems: number}, ArrayPattern: {multiline: boolean, minItems: number}}} Normalized option object.
+         */
+        function normalizeOptions(options) {
+            if (options && (options.ArrayExpression || options.ArrayPattern)) {
+                let expressionOptions, patternOptions;
+
+                if (options.ArrayExpression) {
+                    expressionOptions = normalizeOptionValue(options.ArrayExpression);
+                }
+
+                if (options.ArrayPattern) {
+                    patternOptions = normalizeOptionValue(options.ArrayPattern);
+                }
+
+                return { ArrayExpression: expressionOptions, ArrayPattern: patternOptions };
+            }
+
+            const value = normalizeOptionValue(options);
+
+            return { ArrayExpression: value, ArrayPattern: value };
+        }
+
+        /**
+         * Reports that there shouldn't be a line break after the first token
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportNoLineBreak(token) {
+            const tokenBefore = sourceCode.getTokenBefore(token, { includeComments: true });
+
+            context.report({
+                loc: {
+                    start: tokenBefore.loc.end,
+                    end: token.loc.start
+                },
+                messageId: "unexpectedLineBreak",
+                fix(fixer) {
+                    if (astUtils.isCommentToken(tokenBefore)) {
+                        return null;
+                    }
+
+                    if (!astUtils.isTokenOnSameLine(tokenBefore, token)) {
+                        return fixer.replaceTextRange([tokenBefore.range[1], token.range[0]], " ");
+                    }
+
+                    /*
+                     * This will check if the comma is on the same line as the next element
+                     * Following array:
+                     * [
+                     *     1
+                     *     , 2
+                     *     , 3
+                     * ]
+                     *
+                     * will be fixed to:
+                     * [
+                     *     1, 2, 3
+                     * ]
+                     */
+                    const twoTokensBefore = sourceCode.getTokenBefore(tokenBefore, { includeComments: true });
+
+                    if (astUtils.isCommentToken(twoTokensBefore)) {
+                        return null;
+                    }
+
+                    return fixer.replaceTextRange([twoTokensBefore.range[1], tokenBefore.range[0]], "");
+
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a line break after the first token
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredLineBreak(token) {
+            const tokenBefore = sourceCode.getTokenBefore(token, { includeComments: true });
+
+            context.report({
+                loc: {
+                    start: tokenBefore.loc.end,
+                    end: token.loc.start
+                },
+                messageId: "missingLineBreak",
+                fix(fixer) {
+                    return fixer.replaceTextRange([tokenBefore.range[1], token.range[0]], "\n");
+                }
+            });
+        }
+
+        /**
+         * Reports a given node if it violated this rule.
+         * @param {ASTNode} node A node to check. This is an ObjectExpression node or an ObjectPattern node.
+         * @returns {void}
+         */
+        function check(node) {
+            const elements = node.elements;
+            const normalizedOptions = normalizeOptions(context.options[0]);
+            const options = normalizedOptions[node.type];
+
+            if (!options) {
+                return;
+            }
+
+            let elementBreak = false;
+
+            /*
+             * MULTILINE: true
+             * loop through every element and check
+             * if at least one element has linebreaks inside
+             * this ensures that following is not valid (due to elements are on the same line):
+             *
+             * [
+             *      1,
+             *      2,
+             *      3
+             * ]
+             */
+            if (options.multiline) {
+                elementBreak = elements
+                    .filter(element => element !== null)
+                    .some(element => element.loc.start.line !== element.loc.end.line);
+            }
+
+            let linebreaksCount = 0;
+
+            for (let i = 0; i < node.elements.length; i++) {
+                const element = node.elements[i];
+
+                const previousElement = elements[i - 1];
+
+                if (i === 0 || element === null || previousElement === null) {
+                    continue;
+                }
+
+                const commaToken = sourceCode.getFirstTokenBetween(previousElement, element, astUtils.isCommaToken);
+                const lastTokenOfPreviousElement = sourceCode.getTokenBefore(commaToken);
+                const firstTokenOfCurrentElement = sourceCode.getTokenAfter(commaToken);
+
+                if (!astUtils.isTokenOnSameLine(lastTokenOfPreviousElement, firstTokenOfCurrentElement)) {
+                    linebreaksCount++;
+                }
+            }
+
+            const needsLinebreaks = (
+                elements.length >= options.minItems ||
+                (
+                    options.multiline &&
+                    elementBreak
+                ) ||
+                (
+                    options.consistent &&
+                    linebreaksCount > 0 &&
+                    linebreaksCount < node.elements.length
+                )
+            );
+
+            elements.forEach((element, i) => {
+                const previousElement = elements[i - 1];
+
+                if (i === 0 || element === null || previousElement === null) {
+                    return;
+                }
+
+                const commaToken = sourceCode.getFirstTokenBetween(previousElement, element, astUtils.isCommaToken);
+                const lastTokenOfPreviousElement = sourceCode.getTokenBefore(commaToken);
+                const firstTokenOfCurrentElement = sourceCode.getTokenAfter(commaToken);
+
+                if (needsLinebreaks) {
+                    if (astUtils.isTokenOnSameLine(lastTokenOfPreviousElement, firstTokenOfCurrentElement)) {
+                        reportRequiredLineBreak(firstTokenOfCurrentElement);
+                    }
+                } else {
+                    if (!astUtils.isTokenOnSameLine(lastTokenOfPreviousElement, firstTokenOfCurrentElement)) {
+                        reportNoLineBreak(firstTokenOfCurrentElement);
+                    }
+                }
+            });
+        }
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+            ArrayPattern: check,
+            ArrayExpression: check
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/arrow-body-style.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/arrow-body-style.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/arrow-body-style.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,296 @@
+/**
+ * @fileoverview Rule to require braces in arrow function body.
+ * @author Alberto Rodríguez
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require braces around arrow function bodies",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/arrow-body-style"
+        },
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always", "never"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["as-needed"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                requireReturnForObjectLiteral: { type: "boolean" }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        },
+
+        fixable: "code",
+
+        messages: {
+            unexpectedOtherBlock: "Unexpected block statement surrounding arrow body.",
+            unexpectedEmptyBlock: "Unexpected block statement surrounding arrow body; put a value of `undefined` immediately after the `=>`.",
+            unexpectedObjectBlock: "Unexpected block statement surrounding arrow body; parenthesize the returned value and move it immediately after the `=>`.",
+            unexpectedSingleBlock: "Unexpected block statement surrounding arrow body; move the returned value immediately after the `=>`.",
+            expectedBlock: "Expected block statement surrounding arrow body."
+        }
+    },
+
+    create(context) {
+        const options = context.options;
+        const always = options[0] === "always";
+        const asNeeded = !options[0] || options[0] === "as-needed";
+        const never = options[0] === "never";
+        const requireReturnForObjectLiteral = options[1] && options[1].requireReturnForObjectLiteral;
+        const sourceCode = context.sourceCode;
+        let funcInfo = null;
+
+        /**
+         * Checks whether the given node has ASI problem or not.
+         * @param {Token} token The token to check.
+         * @returns {boolean} `true` if it changes semantics if `;` or `}` followed by the token are removed.
+         */
+        function hasASIProblem(token) {
+            return token && token.type === "Punctuator" && /^[([/`+-]/u.test(token.value);
+        }
+
+        /**
+         * Gets the closing parenthesis by the given node.
+         * @param {ASTNode} node first node after an opening parenthesis.
+         * @returns {Token} The found closing parenthesis token.
+         */
+        function findClosingParen(node) {
+            let nodeToCheck = node;
+
+            while (!astUtils.isParenthesised(sourceCode, nodeToCheck)) {
+                nodeToCheck = nodeToCheck.parent;
+            }
+            return sourceCode.getTokenAfter(nodeToCheck);
+        }
+
+        /**
+         * Check whether the node is inside of a for loop's init
+         * @param {ASTNode} node node is inside for loop
+         * @returns {boolean} `true` if the node is inside of a for loop, else `false`
+         */
+        function isInsideForLoopInitializer(node) {
+            if (node && node.parent) {
+                if (node.parent.type === "ForStatement" && node.parent.init === node) {
+                    return true;
+                }
+                return isInsideForLoopInitializer(node.parent);
+            }
+            return false;
+        }
+
+        /**
+         * Determines whether a arrow function body needs braces
+         * @param {ASTNode} node The arrow function node.
+         * @returns {void}
+         */
+        function validate(node) {
+            const arrowBody = node.body;
+
+            if (arrowBody.type === "BlockStatement") {
+                const blockBody = arrowBody.body;
+
+                if (blockBody.length !== 1 && !never) {
+                    return;
+                }
+
+                if (asNeeded && requireReturnForObjectLiteral && blockBody[0].type === "ReturnStatement" &&
+                    blockBody[0].argument && blockBody[0].argument.type === "ObjectExpression") {
+                    return;
+                }
+
+                if (never || asNeeded && blockBody[0].type === "ReturnStatement") {
+                    let messageId;
+
+                    if (blockBody.length === 0) {
+                        messageId = "unexpectedEmptyBlock";
+                    } else if (blockBody.length > 1) {
+                        messageId = "unexpectedOtherBlock";
+                    } else if (blockBody[0].argument === null) {
+                        messageId = "unexpectedSingleBlock";
+                    } else if (astUtils.isOpeningBraceToken(sourceCode.getFirstToken(blockBody[0], { skip: 1 }))) {
+                        messageId = "unexpectedObjectBlock";
+                    } else {
+                        messageId = "unexpectedSingleBlock";
+                    }
+
+                    context.report({
+                        node,
+                        loc: arrowBody.loc,
+                        messageId,
+                        fix(fixer) {
+                            const fixes = [];
+
+                            if (blockBody.length !== 1 ||
+                                blockBody[0].type !== "ReturnStatement" ||
+                                !blockBody[0].argument ||
+                                hasASIProblem(sourceCode.getTokenAfter(arrowBody))
+                            ) {
+                                return fixes;
+                            }
+
+                            const openingBrace = sourceCode.getFirstToken(arrowBody);
+                            const closingBrace = sourceCode.getLastToken(arrowBody);
+                            const firstValueToken = sourceCode.getFirstToken(blockBody[0], 1);
+                            const lastValueToken = sourceCode.getLastToken(blockBody[0]);
+                            const commentsExist =
+                                sourceCode.commentsExistBetween(openingBrace, firstValueToken) ||
+                                sourceCode.commentsExistBetween(lastValueToken, closingBrace);
+
+                            /*
+                             * Remove tokens around the return value.
+                             * If comments don't exist, remove extra spaces as well.
+                             */
+                            if (commentsExist) {
+                                fixes.push(
+                                    fixer.remove(openingBrace),
+                                    fixer.remove(closingBrace),
+                                    fixer.remove(sourceCode.getTokenAfter(openingBrace)) // return keyword
+                                );
+                            } else {
+                                fixes.push(
+                                    fixer.removeRange([openingBrace.range[0], firstValueToken.range[0]]),
+                                    fixer.removeRange([lastValueToken.range[1], closingBrace.range[1]])
+                                );
+                            }
+
+                            /*
+                             * If the first token of the return value is `{` or the return value is a sequence expression,
+                             * enclose the return value by parentheses to avoid syntax error.
+                             */
+                            if (astUtils.isOpeningBraceToken(firstValueToken) || blockBody[0].argument.type === "SequenceExpression" || (funcInfo.hasInOperator && isInsideForLoopInitializer(node))) {
+                                if (!astUtils.isParenthesised(sourceCode, blockBody[0].argument)) {
+                                    fixes.push(
+                                        fixer.insertTextBefore(firstValueToken, "("),
+                                        fixer.insertTextAfter(lastValueToken, ")")
+                                    );
+                                }
+                            }
+
+                            /*
+                             * If the last token of the return statement is semicolon, remove it.
+                             * Non-block arrow body is an expression, not a statement.
+                             */
+                            if (astUtils.isSemicolonToken(lastValueToken)) {
+                                fixes.push(fixer.remove(lastValueToken));
+                            }
+
+                            return fixes;
+                        }
+                    });
+                }
+            } else {
+                if (always || (asNeeded && requireReturnForObjectLiteral && arrowBody.type === "ObjectExpression")) {
+                    context.report({
+                        node,
+                        loc: arrowBody.loc,
+                        messageId: "expectedBlock",
+                        fix(fixer) {
+                            const fixes = [];
+                            const arrowToken = sourceCode.getTokenBefore(arrowBody, astUtils.isArrowToken);
+                            const [firstTokenAfterArrow, secondTokenAfterArrow] = sourceCode.getTokensAfter(arrowToken, { count: 2 });
+                            const lastToken = sourceCode.getLastToken(node);
+
+                            let parenthesisedObjectLiteral = null;
+
+                            if (
+                                astUtils.isOpeningParenToken(firstTokenAfterArrow) &&
+                                astUtils.isOpeningBraceToken(secondTokenAfterArrow)
+                            ) {
+                                const braceNode = sourceCode.getNodeByRangeIndex(secondTokenAfterArrow.range[0]);
+
+                                if (braceNode.type === "ObjectExpression") {
+                                    parenthesisedObjectLiteral = braceNode;
+                                }
+                            }
+
+                            // If the value is object literal, remove parentheses which were forced by syntax.
+                            if (parenthesisedObjectLiteral) {
+                                const openingParenToken = firstTokenAfterArrow;
+                                const openingBraceToken = secondTokenAfterArrow;
+
+                                if (astUtils.isTokenOnSameLine(openingParenToken, openingBraceToken)) {
+                                    fixes.push(fixer.replaceText(openingParenToken, "{return "));
+                                } else {
+
+                                    // Avoid ASI
+                                    fixes.push(
+                                        fixer.replaceText(openingParenToken, "{"),
+                                        fixer.insertTextBefore(openingBraceToken, "return ")
+                                    );
+                                }
+
+                                // Closing paren for the object doesn't have to be lastToken, e.g.: () => ({}).foo()
+                                fixes.push(fixer.remove(findClosingParen(parenthesisedObjectLiteral)));
+                                fixes.push(fixer.insertTextAfter(lastToken, "}"));
+
+                            } else {
+                                fixes.push(fixer.insertTextBefore(firstTokenAfterArrow, "{return "));
+                                fixes.push(fixer.insertTextAfter(lastToken, "}"));
+                            }
+
+                            return fixes;
+                        }
+                    });
+                }
+            }
+        }
+
+        return {
+            "BinaryExpression[operator='in']"() {
+                let info = funcInfo;
+
+                while (info) {
+                    info.hasInOperator = true;
+                    info = info.upper;
+                }
+            },
+            ArrowFunctionExpression() {
+                funcInfo = {
+                    upper: funcInfo,
+                    hasInOperator: false
+                };
+            },
+            "ArrowFunctionExpression:exit"(node) {
+                validate(node);
+                funcInfo = funcInfo.upper;
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/arrow-parens.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/arrow-parens.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/arrow-parens.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,186 @@
+/**
+ * @fileoverview Rule to require parens in arrow function arguments.
+ * @author Jxck
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines if the given arrow function has block body.
+ * @param {ASTNode} node `ArrowFunctionExpression` node.
+ * @returns {boolean} `true` if the function has block body.
+ */
+function hasBlockBody(node) {
+    return node.body.type === "BlockStatement";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require parentheses around arrow function arguments",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/arrow-parens"
+        },
+
+        fixable: "code",
+
+        schema: [
+            {
+                enum: ["always", "as-needed"]
+            },
+            {
+                type: "object",
+                properties: {
+                    requireForBlockBody: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedParens: "Unexpected parentheses around single function argument.",
+            expectedParens: "Expected parentheses around arrow function argument.",
+
+            unexpectedParensInline: "Unexpected parentheses around single function argument having a body with no curly braces.",
+            expectedParensBlock: "Expected parentheses around arrow function argument having a body with curly braces."
+        }
+    },
+
+    create(context) {
+        const asNeeded = context.options[0] === "as-needed";
+        const requireForBlockBody = asNeeded && context.options[1] && context.options[1].requireForBlockBody === true;
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Finds opening paren of parameters for the given arrow function, if it exists.
+         * It is assumed that the given arrow function has exactly one parameter.
+         * @param {ASTNode} node `ArrowFunctionExpression` node.
+         * @returns {Token|null} the opening paren, or `null` if the given arrow function doesn't have parens of parameters.
+         */
+        function findOpeningParenOfParams(node) {
+            const tokenBeforeParams = sourceCode.getTokenBefore(node.params[0]);
+
+            if (
+                tokenBeforeParams &&
+                astUtils.isOpeningParenToken(tokenBeforeParams) &&
+                node.range[0] <= tokenBeforeParams.range[0]
+            ) {
+                return tokenBeforeParams;
+            }
+
+            return null;
+        }
+
+        /**
+         * Finds closing paren of parameters for the given arrow function.
+         * It is assumed that the given arrow function has parens of parameters and that it has exactly one parameter.
+         * @param {ASTNode} node `ArrowFunctionExpression` node.
+         * @returns {Token} the closing paren of parameters.
+         */
+        function getClosingParenOfParams(node) {
+            return sourceCode.getTokenAfter(node.params[0], astUtils.isClosingParenToken);
+        }
+
+        /**
+         * Determines whether the given arrow function has comments inside parens of parameters.
+         * It is assumed that the given arrow function has parens of parameters.
+         * @param {ASTNode} node `ArrowFunctionExpression` node.
+         * @param {Token} openingParen Opening paren of parameters.
+         * @returns {boolean} `true` if the function has at least one comment inside of parens of parameters.
+         */
+        function hasCommentsInParensOfParams(node, openingParen) {
+            return sourceCode.commentsExistBetween(openingParen, getClosingParenOfParams(node));
+        }
+
+        /**
+         * Determines whether the given arrow function has unexpected tokens before opening paren of parameters,
+         * in which case it will be assumed that the existing parens of parameters are necessary.
+         * Only tokens within the range of the arrow function (tokens that are part of the arrow function) are taken into account.
+         * Example: <T>(a) => b
+         * @param {ASTNode} node `ArrowFunctionExpression` node.
+         * @param {Token} openingParen Opening paren of parameters.
+         * @returns {boolean} `true` if the function has at least one unexpected token.
+         */
+        function hasUnexpectedTokensBeforeOpeningParen(node, openingParen) {
+            const expectedCount = node.async ? 1 : 0;
+
+            return sourceCode.getFirstToken(node, { skip: expectedCount }) !== openingParen;
+        }
+
+        return {
+            "ArrowFunctionExpression[params.length=1]"(node) {
+                const shouldHaveParens = !asNeeded || requireForBlockBody && hasBlockBody(node);
+                const openingParen = findOpeningParenOfParams(node);
+                const hasParens = openingParen !== null;
+                const [param] = node.params;
+
+                if (shouldHaveParens && !hasParens) {
+                    context.report({
+                        node,
+                        messageId: requireForBlockBody ? "expectedParensBlock" : "expectedParens",
+                        loc: param.loc,
+                        *fix(fixer) {
+                            yield fixer.insertTextBefore(param, "(");
+                            yield fixer.insertTextAfter(param, ")");
+                        }
+                    });
+                }
+
+                if (
+                    !shouldHaveParens &&
+                    hasParens &&
+                    param.type === "Identifier" &&
+                    !param.typeAnnotation &&
+                    !node.returnType &&
+                    !hasCommentsInParensOfParams(node, openingParen) &&
+                    !hasUnexpectedTokensBeforeOpeningParen(node, openingParen)
+                ) {
+                    context.report({
+                        node,
+                        messageId: requireForBlockBody ? "unexpectedParensInline" : "unexpectedParens",
+                        loc: param.loc,
+                        *fix(fixer) {
+                            const tokenBeforeOpeningParen = sourceCode.getTokenBefore(openingParen);
+                            const closingParen = getClosingParenOfParams(node);
+
+                            if (
+                                tokenBeforeOpeningParen &&
+                                tokenBeforeOpeningParen.range[1] === openingParen.range[0] &&
+                                !astUtils.canTokensBeAdjacent(tokenBeforeOpeningParen, sourceCode.getFirstToken(param))
+                            ) {
+                                yield fixer.insertTextBefore(openingParen, " ");
+                            }
+
+                            // remove parens, whitespace inside parens, and possible trailing comma
+                            yield fixer.removeRange([openingParen.range[0], param.range[0]]);
+                            yield fixer.removeRange([param.range[1], closingParen.range[1]]);
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/arrow-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/arrow-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/arrow-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,164 @@
+/**
+ * @fileoverview Rule to define spacing before/after arrow function's arrow.
+ * @author Jxck
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent spacing before and after the arrow in arrow functions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/arrow-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    before: {
+                        type: "boolean",
+                        default: true
+                    },
+                    after: {
+                        type: "boolean",
+                        default: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            expectedBefore: "Missing space before =>.",
+            unexpectedBefore: "Unexpected space before =>.",
+
+            expectedAfter: "Missing space after =>.",
+            unexpectedAfter: "Unexpected space after =>."
+        }
+    },
+
+    create(context) {
+
+        // merge rules with default
+        const rule = Object.assign({}, context.options[0]);
+
+        rule.before = rule.before !== false;
+        rule.after = rule.after !== false;
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Get tokens of arrow(`=>`) and before/after arrow.
+         * @param {ASTNode} node The arrow function node.
+         * @returns {Object} Tokens of arrow and before/after arrow.
+         */
+        function getTokens(node) {
+            const arrow = sourceCode.getTokenBefore(node.body, astUtils.isArrowToken);
+
+            return {
+                before: sourceCode.getTokenBefore(arrow),
+                arrow,
+                after: sourceCode.getTokenAfter(arrow)
+            };
+        }
+
+        /**
+         * Count spaces before/after arrow(`=>`) token.
+         * @param {Object} tokens Tokens before/after arrow.
+         * @returns {Object} count of space before/after arrow.
+         */
+        function countSpaces(tokens) {
+            const before = tokens.arrow.range[0] - tokens.before.range[1];
+            const after = tokens.after.range[0] - tokens.arrow.range[1];
+
+            return { before, after };
+        }
+
+        /**
+         * Determines whether space(s) before after arrow(`=>`) is satisfy rule.
+         * if before/after value is `true`, there should be space(s).
+         * if before/after value is `false`, there should be no space.
+         * @param {ASTNode} node The arrow function node.
+         * @returns {void}
+         */
+        function spaces(node) {
+            const tokens = getTokens(node);
+            const countSpace = countSpaces(tokens);
+
+            if (rule.before) {
+
+                // should be space(s) before arrow
+                if (countSpace.before === 0) {
+                    context.report({
+                        node: tokens.before,
+                        messageId: "expectedBefore",
+                        fix(fixer) {
+                            return fixer.insertTextBefore(tokens.arrow, " ");
+                        }
+                    });
+                }
+            } else {
+
+                // should be no space before arrow
+                if (countSpace.before > 0) {
+                    context.report({
+                        node: tokens.before,
+                        messageId: "unexpectedBefore",
+                        fix(fixer) {
+                            return fixer.removeRange([tokens.before.range[1], tokens.arrow.range[0]]);
+                        }
+                    });
+                }
+            }
+
+            if (rule.after) {
+
+                // should be space(s) after arrow
+                if (countSpace.after === 0) {
+                    context.report({
+                        node: tokens.after,
+                        messageId: "expectedAfter",
+                        fix(fixer) {
+                            return fixer.insertTextAfter(tokens.arrow, " ");
+                        }
+                    });
+                }
+            } else {
+
+                // should be no space after arrow
+                if (countSpace.after > 0) {
+                    context.report({
+                        node: tokens.after,
+                        messageId: "unexpectedAfter",
+                        fix(fixer) {
+                            return fixer.removeRange([tokens.arrow.range[1], tokens.after.range[0]]);
+                        }
+                    });
+                }
+            }
+        }
+
+        return {
+            ArrowFunctionExpression: spaces
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/block-scoped-var.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/block-scoped-var.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/block-scoped-var.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,135 @@
+/**
+ * @fileoverview Rule to check for "block scoped" variables by binding context
+ * @author Matt DuVall <http://www.mattduvall.com>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce the use of variables within the scope they are defined",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/block-scoped-var"
+        },
+
+        schema: [],
+
+        messages: {
+            outOfScope: "'{{name}}' declared on line {{definitionLine}} column {{definitionColumn}} is used outside of binding context."
+        }
+    },
+
+    create(context) {
+        let stack = [];
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Makes a block scope.
+         * @param {ASTNode} node A node of a scope.
+         * @returns {void}
+         */
+        function enterScope(node) {
+            stack.push(node.range);
+        }
+
+        /**
+         * Pops the last block scope.
+         * @returns {void}
+         */
+        function exitScope() {
+            stack.pop();
+        }
+
+        /**
+         * Reports a given reference.
+         * @param {eslint-scope.Reference} reference A reference to report.
+         * @param {eslint-scope.Definition} definition A definition for which to report reference.
+         * @returns {void}
+         */
+        function report(reference, definition) {
+            const identifier = reference.identifier;
+            const definitionPosition = definition.name.loc.start;
+
+            context.report({
+                node: identifier,
+                messageId: "outOfScope",
+                data: {
+                    name: identifier.name,
+                    definitionLine: definitionPosition.line,
+                    definitionColumn: definitionPosition.column + 1
+                }
+            });
+        }
+
+        /**
+         * Finds and reports references which are outside of valid scopes.
+         * @param {ASTNode} node A node to get variables.
+         * @returns {void}
+         */
+        function checkForVariables(node) {
+            if (node.kind !== "var") {
+                return;
+            }
+
+            // Defines a predicate to check whether or not a given reference is outside of valid scope.
+            const scopeRange = stack[stack.length - 1];
+
+            /**
+             * Check if a reference is out of scope
+             * @param {ASTNode} reference node to examine
+             * @returns {boolean} True is its outside the scope
+             * @private
+             */
+            function isOutsideOfScope(reference) {
+                const idRange = reference.identifier.range;
+
+                return idRange[0] < scopeRange[0] || idRange[1] > scopeRange[1];
+            }
+
+            // Gets declared variables, and checks its references.
+            const variables = sourceCode.getDeclaredVariables(node);
+
+            for (let i = 0; i < variables.length; ++i) {
+
+                // Reports.
+                variables[i]
+                    .references
+                    .filter(isOutsideOfScope)
+                    .forEach(ref => report(ref, variables[i].defs.find(def => def.parent === node)));
+            }
+        }
+
+        return {
+            Program(node) {
+                stack = [node.range];
+            },
+
+            // Manages scopes.
+            BlockStatement: enterScope,
+            "BlockStatement:exit": exitScope,
+            ForStatement: enterScope,
+            "ForStatement:exit": exitScope,
+            ForInStatement: enterScope,
+            "ForInStatement:exit": exitScope,
+            ForOfStatement: enterScope,
+            "ForOfStatement:exit": exitScope,
+            SwitchStatement: enterScope,
+            "SwitchStatement:exit": exitScope,
+            CatchClause: enterScope,
+            "CatchClause:exit": exitScope,
+            StaticBlock: enterScope,
+            "StaticBlock:exit": exitScope,
+
+            // Finds and reports references which are outside of valid scope.
+            VariableDeclaration: checkForVariables
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/block-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/block-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/block-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,174 @@
+/**
+ * @fileoverview A rule to disallow or enforce spaces inside of single line blocks.
+ * @author Toru Nagashima
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+const util = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Disallow or enforce spaces inside of blocks after opening block and before closing block",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/block-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            { enum: ["always", "never"] }
+        ],
+
+        messages: {
+            missing: "Requires a space {{location}} '{{token}}'.",
+            extra: "Unexpected space(s) {{location}} '{{token}}'."
+        }
+    },
+
+    create(context) {
+        const always = (context.options[0] !== "never"),
+            messageId = always ? "missing" : "extra",
+            sourceCode = context.sourceCode;
+
+        /**
+         * Gets the open brace token from a given node.
+         * @param {ASTNode} node A BlockStatement/StaticBlock/SwitchStatement node to get.
+         * @returns {Token} The token of the open brace.
+         */
+        function getOpenBrace(node) {
+            if (node.type === "SwitchStatement") {
+                if (node.cases.length > 0) {
+                    return sourceCode.getTokenBefore(node.cases[0]);
+                }
+                return sourceCode.getLastToken(node, 1);
+            }
+
+            if (node.type === "StaticBlock") {
+                return sourceCode.getFirstToken(node, { skip: 1 }); // skip the `static` token
+            }
+
+            // "BlockStatement"
+            return sourceCode.getFirstToken(node);
+        }
+
+        /**
+         * Checks whether or not:
+         *   - given tokens are on same line.
+         *   - there is/isn't a space between given tokens.
+         * @param {Token} left A token to check.
+         * @param {Token} right The token which is next to `left`.
+         * @returns {boolean}
+         *    When the option is `"always"`, `true` if there are one or more spaces between given tokens.
+         *    When the option is `"never"`, `true` if there are not any spaces between given tokens.
+         *    If given tokens are not on same line, it's always `true`.
+         */
+        function isValid(left, right) {
+            return (
+                !util.isTokenOnSameLine(left, right) ||
+                sourceCode.isSpaceBetweenTokens(left, right) === always
+            );
+        }
+
+        /**
+         * Checks and reports invalid spacing style inside braces.
+         * @param {ASTNode} node A BlockStatement/StaticBlock/SwitchStatement node to check.
+         * @returns {void}
+         */
+        function checkSpacingInsideBraces(node) {
+
+            // Gets braces and the first/last token of content.
+            const openBrace = getOpenBrace(node);
+            const closeBrace = sourceCode.getLastToken(node);
+            const firstToken = sourceCode.getTokenAfter(openBrace, { includeComments: true });
+            const lastToken = sourceCode.getTokenBefore(closeBrace, { includeComments: true });
+
+            // Skip if the node is invalid or empty.
+            if (openBrace.type !== "Punctuator" ||
+                openBrace.value !== "{" ||
+                closeBrace.type !== "Punctuator" ||
+                closeBrace.value !== "}" ||
+                firstToken === closeBrace
+            ) {
+                return;
+            }
+
+            // Skip line comments for option never
+            if (!always && firstToken.type === "Line") {
+                return;
+            }
+
+            // Check.
+            if (!isValid(openBrace, firstToken)) {
+                let loc = openBrace.loc;
+
+                if (messageId === "extra") {
+                    loc = {
+                        start: openBrace.loc.end,
+                        end: firstToken.loc.start
+                    };
+                }
+
+                context.report({
+                    node,
+                    loc,
+                    messageId,
+                    data: {
+                        location: "after",
+                        token: openBrace.value
+                    },
+                    fix(fixer) {
+                        if (always) {
+                            return fixer.insertTextBefore(firstToken, " ");
+                        }
+
+                        return fixer.removeRange([openBrace.range[1], firstToken.range[0]]);
+                    }
+                });
+            }
+            if (!isValid(lastToken, closeBrace)) {
+                let loc = closeBrace.loc;
+
+                if (messageId === "extra") {
+                    loc = {
+                        start: lastToken.loc.end,
+                        end: closeBrace.loc.start
+                    };
+                }
+                context.report({
+                    node,
+                    loc,
+                    messageId,
+                    data: {
+                        location: "before",
+                        token: closeBrace.value
+                    },
+                    fix(fixer) {
+                        if (always) {
+                            return fixer.insertTextAfter(lastToken, " ");
+                        }
+
+                        return fixer.removeRange([lastToken.range[1], closeBrace.range[0]]);
+                    }
+                });
+            }
+        }
+
+        return {
+            BlockStatement: checkSpacingInsideBraces,
+            StaticBlock: checkSpacingInsideBraces,
+            SwitchStatement: checkSpacingInsideBraces
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/brace-style.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/brace-style.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/brace-style.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,197 @@
+/**
+ * @fileoverview Rule to flag block statements that do not use the one true brace style
+ * @author Ian Christian Myers
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent brace style for blocks",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/brace-style"
+        },
+
+        schema: [
+            {
+                enum: ["1tbs", "stroustrup", "allman"]
+            },
+            {
+                type: "object",
+                properties: {
+                    allowSingleLine: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "whitespace",
+
+        messages: {
+            nextLineOpen: "Opening curly brace does not appear on the same line as controlling statement.",
+            sameLineOpen: "Opening curly brace appears on the same line as controlling statement.",
+            blockSameLine: "Statement inside of curly braces should be on next line.",
+            nextLineClose: "Closing curly brace does not appear on the same line as the subsequent block.",
+            singleLineClose: "Closing curly brace should be on the same line as opening curly brace or on the line after the previous block.",
+            sameLineClose: "Closing curly brace appears on the same line as the subsequent block."
+        }
+    },
+
+    create(context) {
+        const style = context.options[0] || "1tbs",
+            params = context.options[1] || {},
+            sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Fixes a place where a newline unexpectedly appears
+         * @param {Token} firstToken The token before the unexpected newline
+         * @param {Token} secondToken The token after the unexpected newline
+         * @returns {Function} A fixer function to remove the newlines between the tokens
+         */
+        function removeNewlineBetween(firstToken, secondToken) {
+            const textRange = [firstToken.range[1], secondToken.range[0]];
+            const textBetween = sourceCode.text.slice(textRange[0], textRange[1]);
+
+            // Don't do a fix if there is a comment between the tokens
+            if (textBetween.trim()) {
+                return null;
+            }
+            return fixer => fixer.replaceTextRange(textRange, " ");
+        }
+
+        /**
+         * Validates a pair of curly brackets based on the user's config
+         * @param {Token} openingCurly The opening curly bracket
+         * @param {Token} closingCurly The closing curly bracket
+         * @returns {void}
+         */
+        function validateCurlyPair(openingCurly, closingCurly) {
+            const tokenBeforeOpeningCurly = sourceCode.getTokenBefore(openingCurly);
+            const tokenAfterOpeningCurly = sourceCode.getTokenAfter(openingCurly);
+            const tokenBeforeClosingCurly = sourceCode.getTokenBefore(closingCurly);
+            const singleLineException = params.allowSingleLine && astUtils.isTokenOnSameLine(openingCurly, closingCurly);
+
+            if (style !== "allman" && !astUtils.isTokenOnSameLine(tokenBeforeOpeningCurly, openingCurly)) {
+                context.report({
+                    node: openingCurly,
+                    messageId: "nextLineOpen",
+                    fix: removeNewlineBetween(tokenBeforeOpeningCurly, openingCurly)
+                });
+            }
+
+            if (style === "allman" && astUtils.isTokenOnSameLine(tokenBeforeOpeningCurly, openingCurly) && !singleLineException) {
+                context.report({
+                    node: openingCurly,
+                    messageId: "sameLineOpen",
+                    fix: fixer => fixer.insertTextBefore(openingCurly, "\n")
+                });
+            }
+
+            if (astUtils.isTokenOnSameLine(openingCurly, tokenAfterOpeningCurly) && tokenAfterOpeningCurly !== closingCurly && !singleLineException) {
+                context.report({
+                    node: openingCurly,
+                    messageId: "blockSameLine",
+                    fix: fixer => fixer.insertTextAfter(openingCurly, "\n")
+                });
+            }
+
+            if (tokenBeforeClosingCurly !== openingCurly && !singleLineException && astUtils.isTokenOnSameLine(tokenBeforeClosingCurly, closingCurly)) {
+                context.report({
+                    node: closingCurly,
+                    messageId: "singleLineClose",
+                    fix: fixer => fixer.insertTextBefore(closingCurly, "\n")
+                });
+            }
+        }
+
+        /**
+         * Validates the location of a token that appears before a keyword (e.g. a newline before `else`)
+         * @param {Token} curlyToken The closing curly token. This is assumed to precede a keyword token (such as `else` or `finally`).
+         * @returns {void}
+         */
+        function validateCurlyBeforeKeyword(curlyToken) {
+            const keywordToken = sourceCode.getTokenAfter(curlyToken);
+
+            if (style === "1tbs" && !astUtils.isTokenOnSameLine(curlyToken, keywordToken)) {
+                context.report({
+                    node: curlyToken,
+                    messageId: "nextLineClose",
+                    fix: removeNewlineBetween(curlyToken, keywordToken)
+                });
+            }
+
+            if (style !== "1tbs" && astUtils.isTokenOnSameLine(curlyToken, keywordToken)) {
+                context.report({
+                    node: curlyToken,
+                    messageId: "sameLineClose",
+                    fix: fixer => fixer.insertTextAfter(curlyToken, "\n")
+                });
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            BlockStatement(node) {
+                if (!astUtils.STATEMENT_LIST_PARENTS.has(node.parent.type)) {
+                    validateCurlyPair(sourceCode.getFirstToken(node), sourceCode.getLastToken(node));
+                }
+            },
+            StaticBlock(node) {
+                validateCurlyPair(
+                    sourceCode.getFirstToken(node, { skip: 1 }), // skip the `static` token
+                    sourceCode.getLastToken(node)
+                );
+            },
+            ClassBody(node) {
+                validateCurlyPair(sourceCode.getFirstToken(node), sourceCode.getLastToken(node));
+            },
+            SwitchStatement(node) {
+                const closingCurly = sourceCode.getLastToken(node);
+                const openingCurly = sourceCode.getTokenBefore(node.cases.length ? node.cases[0] : closingCurly);
+
+                validateCurlyPair(openingCurly, closingCurly);
+            },
+            IfStatement(node) {
+                if (node.consequent.type === "BlockStatement" && node.alternate) {
+
+                    // Handle the keyword after the `if` block (before `else`)
+                    validateCurlyBeforeKeyword(sourceCode.getLastToken(node.consequent));
+                }
+            },
+            TryStatement(node) {
+
+                // Handle the keyword after the `try` block (before `catch` or `finally`)
+                validateCurlyBeforeKeyword(sourceCode.getLastToken(node.block));
+
+                if (node.handler && node.finalizer) {
+
+                    // Handle the keyword after the `catch` block (before `finally`)
+                    validateCurlyBeforeKeyword(sourceCode.getLastToken(node.handler.body));
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/callback-return.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/callback-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/callback-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,187 @@
+/**
+ * @fileoverview Enforce return after a callback.
+ * @author Jamund Ferguson
+ * @deprecated in ESLint v7.0.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+
+        replacedBy: [],
+
+        type: "suggestion",
+
+        docs: {
+            description: "Require `return` statements after callbacks",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/callback-return"
+        },
+
+        schema: [{
+            type: "array",
+            items: { type: "string" }
+        }],
+
+        messages: {
+            missingReturn: "Expected return with your callback function."
+        }
+    },
+
+    create(context) {
+
+        const callbacks = context.options[0] || ["callback", "cb", "next"],
+            sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Find the closest parent matching a list of types.
+         * @param {ASTNode} node The node whose parents we are searching
+         * @param {Array} types The node types to match
+         * @returns {ASTNode} The matched node or undefined.
+         */
+        function findClosestParentOfType(node, types) {
+            if (!node.parent) {
+                return null;
+            }
+            if (!types.includes(node.parent.type)) {
+                return findClosestParentOfType(node.parent, types);
+            }
+            return node.parent;
+        }
+
+        /**
+         * Check to see if a node contains only identifiers
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} Whether or not the node contains only identifiers
+         */
+        function containsOnlyIdentifiers(node) {
+            if (node.type === "Identifier") {
+                return true;
+            }
+
+            if (node.type === "MemberExpression") {
+                if (node.object.type === "Identifier") {
+                    return true;
+                }
+                if (node.object.type === "MemberExpression") {
+                    return containsOnlyIdentifiers(node.object);
+                }
+            }
+
+            return false;
+        }
+
+        /**
+         * Check to see if a CallExpression is in our callback list.
+         * @param {ASTNode} node The node to check against our callback names list.
+         * @returns {boolean} Whether or not this function matches our callback name.
+         */
+        function isCallback(node) {
+            return containsOnlyIdentifiers(node.callee) && callbacks.includes(sourceCode.getText(node.callee));
+        }
+
+        /**
+         * Determines whether or not the callback is part of a callback expression.
+         * @param {ASTNode} node The callback node
+         * @param {ASTNode} parentNode The expression node
+         * @returns {boolean} Whether or not this is part of a callback expression
+         */
+        function isCallbackExpression(node, parentNode) {
+
+            // ensure the parent node exists and is an expression
+            if (!parentNode || parentNode.type !== "ExpressionStatement") {
+                return false;
+            }
+
+            // cb()
+            if (parentNode.expression === node) {
+                return true;
+            }
+
+            // special case for cb && cb() and similar
+            if (parentNode.expression.type === "BinaryExpression" || parentNode.expression.type === "LogicalExpression") {
+                if (parentNode.expression.right === node) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            CallExpression(node) {
+
+                // if we're not a callback we can return
+                if (!isCallback(node)) {
+                    return;
+                }
+
+                // find the closest block, return or loop
+                const closestBlock = findClosestParentOfType(node, ["BlockStatement", "ReturnStatement", "ArrowFunctionExpression"]) || {};
+
+                // if our parent is a return we know we're ok
+                if (closestBlock.type === "ReturnStatement") {
+                    return;
+                }
+
+                // arrow functions don't always have blocks and implicitly return
+                if (closestBlock.type === "ArrowFunctionExpression") {
+                    return;
+                }
+
+                // block statements are part of functions and most if statements
+                if (closestBlock.type === "BlockStatement") {
+
+                    // find the last item in the block
+                    const lastItem = closestBlock.body[closestBlock.body.length - 1];
+
+                    // if the callback is the last thing in a block that might be ok
+                    if (isCallbackExpression(node, lastItem)) {
+
+                        const parentType = closestBlock.parent.type;
+
+                        // but only if the block is part of a function
+                        if (parentType === "FunctionExpression" ||
+                            parentType === "FunctionDeclaration" ||
+                            parentType === "ArrowFunctionExpression"
+                        ) {
+                            return;
+                        }
+
+                    }
+
+                    // ending a block with a return is also ok
+                    if (lastItem.type === "ReturnStatement") {
+
+                        // but only if the callback is immediately before
+                        if (isCallbackExpression(node, closestBlock.body[closestBlock.body.length - 2])) {
+                            return;
+                        }
+                    }
+
+                }
+
+                // as long as you're the child of a function at this point you should be asked to return
+                if (findClosestParentOfType(node, ["FunctionDeclaration", "FunctionExpression", "ArrowFunctionExpression"])) {
+                    context.report({ node, messageId: "missingReturn" });
+                }
+
+            }
+
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/camelcase.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/camelcase.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/camelcase.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,399 @@
+/**
+ * @fileoverview Rule to flag non-camelcased identifiers
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce camelcase naming convention",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/camelcase"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    ignoreDestructuring: {
+                        type: "boolean",
+                        default: false
+                    },
+                    ignoreImports: {
+                        type: "boolean",
+                        default: false
+                    },
+                    ignoreGlobals: {
+                        type: "boolean",
+                        default: false
+                    },
+                    properties: {
+                        enum: ["always", "never"]
+                    },
+                    allow: {
+                        type: "array",
+                        items: [
+                            {
+                                type: "string"
+                            }
+                        ],
+                        minItems: 0,
+                        uniqueItems: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            notCamelCase: "Identifier '{{name}}' is not in camel case.",
+            notCamelCasePrivate: "#{{name}} is not in camel case."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const properties = options.properties === "never" ? "never" : "always";
+        const ignoreDestructuring = options.ignoreDestructuring;
+        const ignoreImports = options.ignoreImports;
+        const ignoreGlobals = options.ignoreGlobals;
+        const allow = options.allow || [];
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        // contains reported nodes to avoid reporting twice on destructuring with shorthand notation
+        const reported = new Set();
+
+        /**
+         * Checks if a string contains an underscore and isn't all upper-case
+         * @param {string} name The string to check.
+         * @returns {boolean} if the string is underscored
+         * @private
+         */
+        function isUnderscored(name) {
+            const nameBody = name.replace(/^_+|_+$/gu, "");
+
+            // if there's an underscore, it might be A_CONSTANT, which is okay
+            return nameBody.includes("_") && nameBody !== nameBody.toUpperCase();
+        }
+
+        /**
+         * Checks if a string match the ignore list
+         * @param {string} name The string to check.
+         * @returns {boolean} if the string is ignored
+         * @private
+         */
+        function isAllowed(name) {
+            return allow.some(
+                entry => name === entry || name.match(new RegExp(entry, "u"))
+            );
+        }
+
+        /**
+         * Checks if a given name is good or not.
+         * @param {string} name The name to check.
+         * @returns {boolean} `true` if the name is good.
+         * @private
+         */
+        function isGoodName(name) {
+            return !isUnderscored(name) || isAllowed(name);
+        }
+
+        /**
+         * Checks if a given identifier reference or member expression is an assignment
+         * target.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} `true` if the node is an assignment target.
+         */
+        function isAssignmentTarget(node) {
+            const parent = node.parent;
+
+            switch (parent.type) {
+                case "AssignmentExpression":
+                case "AssignmentPattern":
+                    return parent.left === node;
+
+                case "Property":
+                    return (
+                        parent.parent.type === "ObjectPattern" &&
+                        parent.value === node
+                    );
+                case "ArrayPattern":
+                case "RestElement":
+                    return true;
+
+                default:
+                    return false;
+            }
+        }
+
+        /**
+         * Checks if a given binding identifier uses the original name as-is.
+         * - If it's in object destructuring or object expression, the original name is its property name.
+         * - If it's in import declaration, the original name is its exported name.
+         * @param {ASTNode} node The `Identifier` node to check.
+         * @returns {boolean} `true` if the identifier uses the original name as-is.
+         */
+        function equalsToOriginalName(node) {
+            const localName = node.name;
+            const valueNode = node.parent.type === "AssignmentPattern"
+                ? node.parent
+                : node;
+            const parent = valueNode.parent;
+
+            switch (parent.type) {
+                case "Property":
+                    return (
+                        (parent.parent.type === "ObjectPattern" || parent.parent.type === "ObjectExpression") &&
+                        parent.value === valueNode &&
+                        !parent.computed &&
+                        parent.key.type === "Identifier" &&
+                        parent.key.name === localName
+                    );
+
+                case "ImportSpecifier":
+                    return (
+                        parent.local === node &&
+                        astUtils.getModuleExportName(parent.imported) === localName
+                    );
+
+                default:
+                    return false;
+            }
+        }
+
+        /**
+         * Reports an AST node as a rule violation.
+         * @param {ASTNode} node The node to report.
+         * @returns {void}
+         * @private
+         */
+        function report(node) {
+            if (reported.has(node.range[0])) {
+                return;
+            }
+            reported.add(node.range[0]);
+
+            // Report it.
+            context.report({
+                node,
+                messageId: node.type === "PrivateIdentifier"
+                    ? "notCamelCasePrivate"
+                    : "notCamelCase",
+                data: { name: node.name }
+            });
+        }
+
+        /**
+         * Reports an identifier reference or a binding identifier.
+         * @param {ASTNode} node The `Identifier` node to report.
+         * @returns {void}
+         */
+        function reportReferenceId(node) {
+
+            /*
+             * For backward compatibility, if it's in callings then ignore it.
+             * Not sure why it is.
+             */
+            if (
+                node.parent.type === "CallExpression" ||
+                node.parent.type === "NewExpression"
+            ) {
+                return;
+            }
+
+            /*
+             * For backward compatibility, if it's a default value of
+             * destructuring/parameters then ignore it.
+             * Not sure why it is.
+             */
+            if (
+                node.parent.type === "AssignmentPattern" &&
+                node.parent.right === node
+            ) {
+                return;
+            }
+
+            /*
+             * The `ignoreDestructuring` flag skips the identifiers that uses
+             * the property name as-is.
+             */
+            if (ignoreDestructuring && equalsToOriginalName(node)) {
+                return;
+            }
+
+            report(node);
+        }
+
+        return {
+
+            // Report camelcase of global variable references ------------------
+            Program(node) {
+                const scope = sourceCode.getScope(node);
+
+                if (!ignoreGlobals) {
+
+                    // Defined globals in config files or directive comments.
+                    for (const variable of scope.variables) {
+                        if (
+                            variable.identifiers.length > 0 ||
+                            isGoodName(variable.name)
+                        ) {
+                            continue;
+                        }
+                        for (const reference of variable.references) {
+
+                            /*
+                             * For backward compatibility, this rule reports read-only
+                             * references as well.
+                             */
+                            reportReferenceId(reference.identifier);
+                        }
+                    }
+                }
+
+                // Undefined globals.
+                for (const reference of scope.through) {
+                    const id = reference.identifier;
+
+                    if (isGoodName(id.name)) {
+                        continue;
+                    }
+
+                    /*
+                     * For backward compatibility, this rule reports read-only
+                     * references as well.
+                     */
+                    reportReferenceId(id);
+                }
+            },
+
+            // Report camelcase of declared variables --------------------------
+            [[
+                "VariableDeclaration",
+                "FunctionDeclaration",
+                "FunctionExpression",
+                "ArrowFunctionExpression",
+                "ClassDeclaration",
+                "ClassExpression",
+                "CatchClause"
+            ]](node) {
+                for (const variable of sourceCode.getDeclaredVariables(node)) {
+                    if (isGoodName(variable.name)) {
+                        continue;
+                    }
+                    const id = variable.identifiers[0];
+
+                    // Report declaration.
+                    if (!(ignoreDestructuring && equalsToOriginalName(id))) {
+                        report(id);
+                    }
+
+                    /*
+                     * For backward compatibility, report references as well.
+                     * It looks unnecessary because declarations are reported.
+                     */
+                    for (const reference of variable.references) {
+                        if (reference.init) {
+                            continue; // Skip the write references of initializers.
+                        }
+                        reportReferenceId(reference.identifier);
+                    }
+                }
+            },
+
+            // Report camelcase in properties ----------------------------------
+            [[
+                "ObjectExpression > Property[computed!=true] > Identifier.key",
+                "MethodDefinition[computed!=true] > Identifier.key",
+                "PropertyDefinition[computed!=true] > Identifier.key",
+                "MethodDefinition > PrivateIdentifier.key",
+                "PropertyDefinition > PrivateIdentifier.key"
+            ]](node) {
+                if (properties === "never" || isGoodName(node.name)) {
+                    return;
+                }
+                report(node);
+            },
+            "MemberExpression[computed!=true] > Identifier.property"(node) {
+                if (
+                    properties === "never" ||
+                    !isAssignmentTarget(node.parent) || // ← ignore read-only references.
+                    isGoodName(node.name)
+                ) {
+                    return;
+                }
+                report(node);
+            },
+
+            // Report camelcase in import --------------------------------------
+            ImportDeclaration(node) {
+                for (const variable of sourceCode.getDeclaredVariables(node)) {
+                    if (isGoodName(variable.name)) {
+                        continue;
+                    }
+                    const id = variable.identifiers[0];
+
+                    // Report declaration.
+                    if (!(ignoreImports && equalsToOriginalName(id))) {
+                        report(id);
+                    }
+
+                    /*
+                     * For backward compatibility, report references as well.
+                     * It looks unnecessary because declarations are reported.
+                     */
+                    for (const reference of variable.references) {
+                        reportReferenceId(reference.identifier);
+                    }
+                }
+            },
+
+            // Report camelcase in re-export -----------------------------------
+            [[
+                "ExportAllDeclaration > Identifier.exported",
+                "ExportSpecifier > Identifier.exported"
+            ]](node) {
+                if (isGoodName(node.name)) {
+                    return;
+                }
+                report(node);
+            },
+
+            // Report camelcase in labels --------------------------------------
+            [[
+                "LabeledStatement > Identifier.label",
+
+                /*
+                 * For backward compatibility, report references as well.
+                 * It looks unnecessary because declarations are reported.
+                 */
+                "BreakStatement > Identifier.label",
+                "ContinueStatement > Identifier.label"
+            ]](node) {
+                if (isGoodName(node.name)) {
+                    return;
+                }
+                report(node);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/capitalized-comments.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/capitalized-comments.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/capitalized-comments.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,300 @@
+/**
+ * @fileoverview enforce or disallow capitalization of the first letter of a comment
+ * @author Kevin Partington
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const LETTER_PATTERN = require("./utils/patterns/letters");
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const DEFAULT_IGNORE_PATTERN = astUtils.COMMENTS_IGNORE_PATTERN,
+    WHITESPACE = /\s/gu,
+    MAYBE_URL = /^\s*[^:/?#\s]+:\/\/[^?#]/u; // TODO: Combine w/ max-len pattern?
+
+/*
+ * Base schema body for defining the basic capitalization rule, ignorePattern,
+ * and ignoreInlineComments values.
+ * This can be used in a few different ways in the actual schema.
+ */
+const SCHEMA_BODY = {
+    type: "object",
+    properties: {
+        ignorePattern: {
+            type: "string"
+        },
+        ignoreInlineComments: {
+            type: "boolean"
+        },
+        ignoreConsecutiveComments: {
+            type: "boolean"
+        }
+    },
+    additionalProperties: false
+};
+const DEFAULTS = {
+    ignorePattern: "",
+    ignoreInlineComments: false,
+    ignoreConsecutiveComments: false
+};
+
+/**
+ * Get normalized options for either block or line comments from the given
+ * user-provided options.
+ * - If the user-provided options is just a string, returns a normalized
+ *   set of options using default values for all other options.
+ * - If the user-provided options is an object, then a normalized option
+ *   set is returned. Options specified in overrides will take priority
+ *   over options specified in the main options object, which will in
+ *   turn take priority over the rule's defaults.
+ * @param {Object|string} rawOptions The user-provided options.
+ * @param {string} which Either "line" or "block".
+ * @returns {Object} The normalized options.
+ */
+function getNormalizedOptions(rawOptions, which) {
+    return Object.assign({}, DEFAULTS, rawOptions[which] || rawOptions);
+}
+
+/**
+ * Get normalized options for block and line comments.
+ * @param {Object|string} rawOptions The user-provided options.
+ * @returns {Object} An object with "Line" and "Block" keys and corresponding
+ * normalized options objects.
+ */
+function getAllNormalizedOptions(rawOptions = {}) {
+    return {
+        Line: getNormalizedOptions(rawOptions, "line"),
+        Block: getNormalizedOptions(rawOptions, "block")
+    };
+}
+
+/**
+ * Creates a regular expression for each ignorePattern defined in the rule
+ * options.
+ *
+ * This is done in order to avoid invoking the RegExp constructor repeatedly.
+ * @param {Object} normalizedOptions The normalized rule options.
+ * @returns {void}
+ */
+function createRegExpForIgnorePatterns(normalizedOptions) {
+    Object.keys(normalizedOptions).forEach(key => {
+        const ignorePatternStr = normalizedOptions[key].ignorePattern;
+
+        if (ignorePatternStr) {
+            const regExp = RegExp(`^\\s*(?:${ignorePatternStr})`, "u");
+
+            normalizedOptions[key].ignorePatternRegExp = regExp;
+        }
+    });
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce or disallow capitalization of the first letter of a comment",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/capitalized-comments"
+        },
+
+        fixable: "code",
+
+        schema: [
+            { enum: ["always", "never"] },
+            {
+                oneOf: [
+                    SCHEMA_BODY,
+                    {
+                        type: "object",
+                        properties: {
+                            line: SCHEMA_BODY,
+                            block: SCHEMA_BODY
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            unexpectedLowercaseComment: "Comments should not begin with a lowercase character.",
+            unexpectedUppercaseComment: "Comments should not begin with an uppercase character."
+        }
+    },
+
+    create(context) {
+
+        const capitalize = context.options[0] || "always",
+            normalizedOptions = getAllNormalizedOptions(context.options[1]),
+            sourceCode = context.sourceCode;
+
+        createRegExpForIgnorePatterns(normalizedOptions);
+
+        //----------------------------------------------------------------------
+        // Helpers
+        //----------------------------------------------------------------------
+
+        /**
+         * Checks whether a comment is an inline comment.
+         *
+         * For the purpose of this rule, a comment is inline if:
+         * 1. The comment is preceded by a token on the same line; and
+         * 2. The command is followed by a token on the same line.
+         *
+         * Note that the comment itself need not be single-line!
+         *
+         * Also, it follows from this definition that only block comments can
+         * be considered as possibly inline. This is because line comments
+         * would consume any following tokens on the same line as the comment.
+         * @param {ASTNode} comment The comment node to check.
+         * @returns {boolean} True if the comment is an inline comment, false
+         * otherwise.
+         */
+        function isInlineComment(comment) {
+            const previousToken = sourceCode.getTokenBefore(comment, { includeComments: true }),
+                nextToken = sourceCode.getTokenAfter(comment, { includeComments: true });
+
+            return Boolean(
+                previousToken &&
+                nextToken &&
+                comment.loc.start.line === previousToken.loc.end.line &&
+                comment.loc.end.line === nextToken.loc.start.line
+            );
+        }
+
+        /**
+         * Determine if a comment follows another comment.
+         * @param {ASTNode} comment The comment to check.
+         * @returns {boolean} True if the comment follows a valid comment.
+         */
+        function isConsecutiveComment(comment) {
+            const previousTokenOrComment = sourceCode.getTokenBefore(comment, { includeComments: true });
+
+            return Boolean(
+                previousTokenOrComment &&
+                ["Block", "Line"].includes(previousTokenOrComment.type)
+            );
+        }
+
+        /**
+         * Check a comment to determine if it is valid for this rule.
+         * @param {ASTNode} comment The comment node to process.
+         * @param {Object} options The options for checking this comment.
+         * @returns {boolean} True if the comment is valid, false otherwise.
+         */
+        function isCommentValid(comment, options) {
+
+            // 1. Check for default ignore pattern.
+            if (DEFAULT_IGNORE_PATTERN.test(comment.value)) {
+                return true;
+            }
+
+            // 2. Check for custom ignore pattern.
+            const commentWithoutAsterisks = comment.value
+                .replace(/\*/gu, "");
+
+            if (options.ignorePatternRegExp && options.ignorePatternRegExp.test(commentWithoutAsterisks)) {
+                return true;
+            }
+
+            // 3. Check for inline comments.
+            if (options.ignoreInlineComments && isInlineComment(comment)) {
+                return true;
+            }
+
+            // 4. Is this a consecutive comment (and are we tolerating those)?
+            if (options.ignoreConsecutiveComments && isConsecutiveComment(comment)) {
+                return true;
+            }
+
+            // 5. Does the comment start with a possible URL?
+            if (MAYBE_URL.test(commentWithoutAsterisks)) {
+                return true;
+            }
+
+            // 6. Is the initial word character a letter?
+            const commentWordCharsOnly = commentWithoutAsterisks
+                .replace(WHITESPACE, "");
+
+            if (commentWordCharsOnly.length === 0) {
+                return true;
+            }
+
+            const firstWordChar = commentWordCharsOnly[0];
+
+            if (!LETTER_PATTERN.test(firstWordChar)) {
+                return true;
+            }
+
+            // 7. Check the case of the initial word character.
+            const isUppercase = firstWordChar !== firstWordChar.toLocaleLowerCase(),
+                isLowercase = firstWordChar !== firstWordChar.toLocaleUpperCase();
+
+            if (capitalize === "always" && isLowercase) {
+                return false;
+            }
+            if (capitalize === "never" && isUppercase) {
+                return false;
+            }
+
+            return true;
+        }
+
+        /**
+         * Process a comment to determine if it needs to be reported.
+         * @param {ASTNode} comment The comment node to process.
+         * @returns {void}
+         */
+        function processComment(comment) {
+            const options = normalizedOptions[comment.type],
+                commentValid = isCommentValid(comment, options);
+
+            if (!commentValid) {
+                const messageId = capitalize === "always"
+                    ? "unexpectedLowercaseComment"
+                    : "unexpectedUppercaseComment";
+
+                context.report({
+                    node: null, // Intentionally using loc instead
+                    loc: comment.loc,
+                    messageId,
+                    fix(fixer) {
+                        const match = comment.value.match(LETTER_PATTERN);
+
+                        return fixer.replaceTextRange(
+
+                            // Offset match.index by 2 to account for the first 2 characters that start the comment (// or /*)
+                            [comment.range[0] + match.index + 2, comment.range[0] + match.index + 3],
+                            capitalize === "always" ? match[0].toLocaleUpperCase() : match[0].toLocaleLowerCase()
+                        );
+                    }
+                });
+            }
+        }
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+            Program() {
+                const comments = sourceCode.getAllComments();
+
+                comments.filter(token => token.type !== "Shebang").forEach(processComment);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/class-methods-use-this.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/class-methods-use-this.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/class-methods-use-this.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,187 @@
+/**
+ * @fileoverview Rule to enforce that all class methods use 'this'.
+ * @author Patrick Williams
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce that class methods utilize `this`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/class-methods-use-this"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                exceptMethods: {
+                    type: "array",
+                    items: {
+                        type: "string"
+                    }
+                },
+                enforceForClassFields: {
+                    type: "boolean",
+                    default: true
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            missingThis: "Expected 'this' to be used by class {{name}}."
+        }
+    },
+    create(context) {
+        const config = Object.assign({}, context.options[0]);
+        const enforceForClassFields = config.enforceForClassFields !== false;
+        const exceptMethods = new Set(config.exceptMethods || []);
+
+        const stack = [];
+
+        /**
+         * Push `this` used flag initialized with `false` onto the stack.
+         * @returns {void}
+         */
+        function pushContext() {
+            stack.push(false);
+        }
+
+        /**
+         * Pop `this` used flag from the stack.
+         * @returns {boolean | undefined} `this` used flag
+         */
+        function popContext() {
+            return stack.pop();
+        }
+
+        /**
+         * Initializes the current context to false and pushes it onto the stack.
+         * These booleans represent whether 'this' has been used in the context.
+         * @returns {void}
+         * @private
+         */
+        function enterFunction() {
+            pushContext();
+        }
+
+        /**
+         * Check if the node is an instance method
+         * @param {ASTNode} node node to check
+         * @returns {boolean} True if its an instance method
+         * @private
+         */
+        function isInstanceMethod(node) {
+            switch (node.type) {
+                case "MethodDefinition":
+                    return !node.static && node.kind !== "constructor";
+                case "PropertyDefinition":
+                    return !node.static && enforceForClassFields;
+                default:
+                    return false;
+            }
+        }
+
+        /**
+         * Check if the node is an instance method not excluded by config
+         * @param {ASTNode} node node to check
+         * @returns {boolean} True if it is an instance method, and not excluded by config
+         * @private
+         */
+        function isIncludedInstanceMethod(node) {
+            if (isInstanceMethod(node)) {
+                if (node.computed) {
+                    return true;
+                }
+
+                const hashIfNeeded = node.key.type === "PrivateIdentifier" ? "#" : "";
+                const name = node.key.type === "Literal"
+                    ? astUtils.getStaticStringValue(node.key)
+                    : (node.key.name || "");
+
+                return !exceptMethods.has(hashIfNeeded + name);
+            }
+            return false;
+        }
+
+        /**
+         * Checks if we are leaving a function that is a method, and reports if 'this' has not been used.
+         * Static methods and the constructor are exempt.
+         * Then pops the context off the stack.
+         * @param {ASTNode} node A function node that was entered.
+         * @returns {void}
+         * @private
+         */
+        function exitFunction(node) {
+            const methodUsesThis = popContext();
+
+            if (isIncludedInstanceMethod(node.parent) && !methodUsesThis) {
+                context.report({
+                    node,
+                    loc: astUtils.getFunctionHeadLoc(node, context.sourceCode),
+                    messageId: "missingThis",
+                    data: {
+                        name: astUtils.getFunctionNameWithKind(node)
+                    }
+                });
+            }
+        }
+
+        /**
+         * Mark the current context as having used 'this'.
+         * @returns {void}
+         * @private
+         */
+        function markThisUsed() {
+            if (stack.length) {
+                stack[stack.length - 1] = true;
+            }
+        }
+
+        return {
+            FunctionDeclaration: enterFunction,
+            "FunctionDeclaration:exit": exitFunction,
+            FunctionExpression: enterFunction,
+            "FunctionExpression:exit": exitFunction,
+
+            /*
+             * Class field value are implicit functions.
+             */
+            "PropertyDefinition > *.key:exit": pushContext,
+            "PropertyDefinition:exit": popContext,
+
+            /*
+             * Class static blocks are implicit functions. They aren't required to use `this`,
+             * but we have to push context so that it captures any use of `this` in the static block
+             * separately from enclosing contexts, because static blocks have their own `this` and it
+             * shouldn't count as used `this` in enclosing contexts.
+             */
+            StaticBlock: pushContext,
+            "StaticBlock:exit": popContext,
+
+            ThisExpression: markThisUsed,
+            Super: markThisUsed,
+            ...(
+                enforceForClassFields && {
+                    "PropertyDefinition > ArrowFunctionExpression.value": enterFunction,
+                    "PropertyDefinition > ArrowFunctionExpression.value:exit": exitFunction
+                }
+            )
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/comma-dangle.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/comma-dangle.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/comma-dangle.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,373 @@
+/**
+ * @fileoverview Rule to forbid or enforce dangling commas.
+ * @author Ian Christian Myers
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const DEFAULT_OPTIONS = Object.freeze({
+    arrays: "never",
+    objects: "never",
+    imports: "never",
+    exports: "never",
+    functions: "never"
+});
+
+/**
+ * Checks whether or not a trailing comma is allowed in a given node.
+ * If the `lastItem` is `RestElement` or `RestProperty`, it disallows trailing commas.
+ * @param {ASTNode} lastItem The node of the last element in the given node.
+ * @returns {boolean} `true` if a trailing comma is allowed.
+ */
+function isTrailingCommaAllowed(lastItem) {
+    return !(
+        lastItem.type === "RestElement" ||
+        lastItem.type === "RestProperty" ||
+        lastItem.type === "ExperimentalRestProperty"
+    );
+}
+
+/**
+ * Normalize option value.
+ * @param {string|Object|undefined} optionValue The 1st option value to normalize.
+ * @param {number} ecmaVersion The normalized ECMAScript version.
+ * @returns {Object} The normalized option value.
+ */
+function normalizeOptions(optionValue, ecmaVersion) {
+    if (typeof optionValue === "string") {
+        return {
+            arrays: optionValue,
+            objects: optionValue,
+            imports: optionValue,
+            exports: optionValue,
+            functions: ecmaVersion < 2017 ? "ignore" : optionValue
+        };
+    }
+    if (typeof optionValue === "object" && optionValue !== null) {
+        return {
+            arrays: optionValue.arrays || DEFAULT_OPTIONS.arrays,
+            objects: optionValue.objects || DEFAULT_OPTIONS.objects,
+            imports: optionValue.imports || DEFAULT_OPTIONS.imports,
+            exports: optionValue.exports || DEFAULT_OPTIONS.exports,
+            functions: optionValue.functions || DEFAULT_OPTIONS.functions
+        };
+    }
+
+    return DEFAULT_OPTIONS;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require or disallow trailing commas",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/comma-dangle"
+        },
+
+        fixable: "code",
+
+        schema: {
+            definitions: {
+                value: {
+                    enum: [
+                        "always-multiline",
+                        "always",
+                        "never",
+                        "only-multiline"
+                    ]
+                },
+                valueWithIgnore: {
+                    enum: [
+                        "always-multiline",
+                        "always",
+                        "ignore",
+                        "never",
+                        "only-multiline"
+                    ]
+                }
+            },
+            type: "array",
+            items: [
+                {
+                    oneOf: [
+                        {
+                            $ref: "#/definitions/value"
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                arrays: { $ref: "#/definitions/valueWithIgnore" },
+                                objects: { $ref: "#/definitions/valueWithIgnore" },
+                                imports: { $ref: "#/definitions/valueWithIgnore" },
+                                exports: { $ref: "#/definitions/valueWithIgnore" },
+                                functions: { $ref: "#/definitions/valueWithIgnore" }
+                            },
+                            additionalProperties: false
+                        }
+                    ]
+                }
+            ],
+            additionalItems: false
+        },
+
+        messages: {
+            unexpected: "Unexpected trailing comma.",
+            missing: "Missing trailing comma."
+        }
+    },
+
+    create(context) {
+        const options = normalizeOptions(context.options[0], context.languageOptions.ecmaVersion);
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Gets the last item of the given node.
+         * @param {ASTNode} node The node to get.
+         * @returns {ASTNode|null} The last node or null.
+         */
+        function getLastItem(node) {
+
+            /**
+             * Returns the last element of an array
+             * @param {any[]} array The input array
+             * @returns {any} The last element
+             */
+            function last(array) {
+                return array[array.length - 1];
+            }
+
+            switch (node.type) {
+                case "ObjectExpression":
+                case "ObjectPattern":
+                    return last(node.properties);
+                case "ArrayExpression":
+                case "ArrayPattern":
+                    return last(node.elements);
+                case "ImportDeclaration":
+                case "ExportNamedDeclaration":
+                    return last(node.specifiers);
+                case "FunctionDeclaration":
+                case "FunctionExpression":
+                case "ArrowFunctionExpression":
+                    return last(node.params);
+                case "CallExpression":
+                case "NewExpression":
+                    return last(node.arguments);
+                default:
+                    return null;
+            }
+        }
+
+        /**
+         * Gets the trailing comma token of the given node.
+         * If the trailing comma does not exist, this returns the token which is
+         * the insertion point of the trailing comma token.
+         * @param {ASTNode} node The node to get.
+         * @param {ASTNode} lastItem The last item of the node.
+         * @returns {Token} The trailing comma token or the insertion point.
+         */
+        function getTrailingToken(node, lastItem) {
+            switch (node.type) {
+                case "ObjectExpression":
+                case "ArrayExpression":
+                case "CallExpression":
+                case "NewExpression":
+                    return sourceCode.getLastToken(node, 1);
+                default: {
+                    const nextToken = sourceCode.getTokenAfter(lastItem);
+
+                    if (astUtils.isCommaToken(nextToken)) {
+                        return nextToken;
+                    }
+                    return sourceCode.getLastToken(lastItem);
+                }
+            }
+        }
+
+        /**
+         * Checks whether or not a given node is multiline.
+         * This rule handles a given node as multiline when the closing parenthesis
+         * and the last element are not on the same line.
+         * @param {ASTNode} node A node to check.
+         * @returns {boolean} `true` if the node is multiline.
+         */
+        function isMultiline(node) {
+            const lastItem = getLastItem(node);
+
+            if (!lastItem) {
+                return false;
+            }
+
+            const penultimateToken = getTrailingToken(node, lastItem);
+            const lastToken = sourceCode.getTokenAfter(penultimateToken);
+
+            return lastToken.loc.end.line !== penultimateToken.loc.end.line;
+        }
+
+        /**
+         * Reports a trailing comma if it exists.
+         * @param {ASTNode} node A node to check. Its type is one of
+         *   ObjectExpression, ObjectPattern, ArrayExpression, ArrayPattern,
+         *   ImportDeclaration, and ExportNamedDeclaration.
+         * @returns {void}
+         */
+        function forbidTrailingComma(node) {
+            const lastItem = getLastItem(node);
+
+            if (!lastItem || (node.type === "ImportDeclaration" && lastItem.type !== "ImportSpecifier")) {
+                return;
+            }
+
+            const trailingToken = getTrailingToken(node, lastItem);
+
+            if (astUtils.isCommaToken(trailingToken)) {
+                context.report({
+                    node: lastItem,
+                    loc: trailingToken.loc,
+                    messageId: "unexpected",
+                    *fix(fixer) {
+                        yield fixer.remove(trailingToken);
+
+                        /*
+                         * Extend the range of the fix to include surrounding tokens to ensure
+                         * that the element after which the comma is removed stays _last_.
+                         * This intentionally makes conflicts in fix ranges with rules that may be
+                         * adding or removing elements in the same autofix pass.
+                         * https://github.com/eslint/eslint/issues/15660
+                         */
+                        yield fixer.insertTextBefore(sourceCode.getTokenBefore(trailingToken), "");
+                        yield fixer.insertTextAfter(sourceCode.getTokenAfter(trailingToken), "");
+                    }
+                });
+            }
+        }
+
+        /**
+         * Reports the last element of a given node if it does not have a trailing
+         * comma.
+         *
+         * If a given node is `ArrayPattern` which has `RestElement`, the trailing
+         * comma is disallowed, so report if it exists.
+         * @param {ASTNode} node A node to check. Its type is one of
+         *   ObjectExpression, ObjectPattern, ArrayExpression, ArrayPattern,
+         *   ImportDeclaration, and ExportNamedDeclaration.
+         * @returns {void}
+         */
+        function forceTrailingComma(node) {
+            const lastItem = getLastItem(node);
+
+            if (!lastItem || (node.type === "ImportDeclaration" && lastItem.type !== "ImportSpecifier")) {
+                return;
+            }
+            if (!isTrailingCommaAllowed(lastItem)) {
+                forbidTrailingComma(node);
+                return;
+            }
+
+            const trailingToken = getTrailingToken(node, lastItem);
+
+            if (trailingToken.value !== ",") {
+                context.report({
+                    node: lastItem,
+                    loc: {
+                        start: trailingToken.loc.end,
+                        end: astUtils.getNextLocation(sourceCode, trailingToken.loc.end)
+                    },
+                    messageId: "missing",
+                    *fix(fixer) {
+                        yield fixer.insertTextAfter(trailingToken, ",");
+
+                        /*
+                         * Extend the range of the fix to include surrounding tokens to ensure
+                         * that the element after which the comma is inserted stays _last_.
+                         * This intentionally makes conflicts in fix ranges with rules that may be
+                         * adding or removing elements in the same autofix pass.
+                         * https://github.com/eslint/eslint/issues/15660
+                         */
+                        yield fixer.insertTextBefore(trailingToken, "");
+                        yield fixer.insertTextAfter(sourceCode.getTokenAfter(trailingToken), "");
+                    }
+                });
+            }
+        }
+
+        /**
+         * If a given node is multiline, reports the last element of a given node
+         * when it does not have a trailing comma.
+         * Otherwise, reports a trailing comma if it exists.
+         * @param {ASTNode} node A node to check. Its type is one of
+         *   ObjectExpression, ObjectPattern, ArrayExpression, ArrayPattern,
+         *   ImportDeclaration, and ExportNamedDeclaration.
+         * @returns {void}
+         */
+        function forceTrailingCommaIfMultiline(node) {
+            if (isMultiline(node)) {
+                forceTrailingComma(node);
+            } else {
+                forbidTrailingComma(node);
+            }
+        }
+
+        /**
+         * Only if a given node is not multiline, reports the last element of a given node
+         * when it does not have a trailing comma.
+         * Otherwise, reports a trailing comma if it exists.
+         * @param {ASTNode} node A node to check. Its type is one of
+         *   ObjectExpression, ObjectPattern, ArrayExpression, ArrayPattern,
+         *   ImportDeclaration, and ExportNamedDeclaration.
+         * @returns {void}
+         */
+        function allowTrailingCommaIfMultiline(node) {
+            if (!isMultiline(node)) {
+                forbidTrailingComma(node);
+            }
+        }
+
+        const predicate = {
+            always: forceTrailingComma,
+            "always-multiline": forceTrailingCommaIfMultiline,
+            "only-multiline": allowTrailingCommaIfMultiline,
+            never: forbidTrailingComma,
+            ignore() {}
+        };
+
+        return {
+            ObjectExpression: predicate[options.objects],
+            ObjectPattern: predicate[options.objects],
+
+            ArrayExpression: predicate[options.arrays],
+            ArrayPattern: predicate[options.arrays],
+
+            ImportDeclaration: predicate[options.imports],
+
+            ExportNamedDeclaration: predicate[options.exports],
+
+            FunctionDeclaration: predicate[options.functions],
+            FunctionExpression: predicate[options.functions],
+            ArrowFunctionExpression: predicate[options.functions],
+            CallExpression: predicate[options.functions],
+            NewExpression: predicate[options.functions]
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/comma-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/comma-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/comma-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,192 @@
+/**
+ * @fileoverview Comma spacing - validates spacing before and after comma
+ * @author Vignesh Anand aka vegetableman.
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent spacing before and after commas",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/comma-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    before: {
+                        type: "boolean",
+                        default: false
+                    },
+                    after: {
+                        type: "boolean",
+                        default: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            missing: "A space is required {{loc}} ','.",
+            unexpected: "There should be no space {{loc}} ','."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+        const tokensAndComments = sourceCode.tokensAndComments;
+
+        const options = {
+            before: context.options[0] ? context.options[0].before : false,
+            after: context.options[0] ? context.options[0].after : true
+        };
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        // list of comma tokens to ignore for the check of leading whitespace
+        const commaTokensToIgnore = [];
+
+        /**
+         * Reports a spacing error with an appropriate message.
+         * @param {ASTNode} node The binary expression node to report.
+         * @param {string} loc Is the error "before" or "after" the comma?
+         * @param {ASTNode} otherNode The node at the left or right of `node`
+         * @returns {void}
+         * @private
+         */
+        function report(node, loc, otherNode) {
+            context.report({
+                node,
+                fix(fixer) {
+                    if (options[loc]) {
+                        if (loc === "before") {
+                            return fixer.insertTextBefore(node, " ");
+                        }
+                        return fixer.insertTextAfter(node, " ");
+
+                    }
+                    let start, end;
+                    const newText = "";
+
+                    if (loc === "before") {
+                        start = otherNode.range[1];
+                        end = node.range[0];
+                    } else {
+                        start = node.range[1];
+                        end = otherNode.range[0];
+                    }
+
+                    return fixer.replaceTextRange([start, end], newText);
+
+                },
+                messageId: options[loc] ? "missing" : "unexpected",
+                data: {
+                    loc
+                }
+            });
+        }
+
+        /**
+         * Adds null elements of the given ArrayExpression or ArrayPattern node to the ignore list.
+         * @param {ASTNode} node An ArrayExpression or ArrayPattern node.
+         * @returns {void}
+         */
+        function addNullElementsToIgnoreList(node) {
+            let previousToken = sourceCode.getFirstToken(node);
+
+            node.elements.forEach(element => {
+                let token;
+
+                if (element === null) {
+                    token = sourceCode.getTokenAfter(previousToken);
+
+                    if (astUtils.isCommaToken(token)) {
+                        commaTokensToIgnore.push(token);
+                    }
+                } else {
+                    token = sourceCode.getTokenAfter(element);
+                }
+
+                previousToken = token;
+            });
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            "Program:exit"() {
+                tokensAndComments.forEach((token, i) => {
+
+                    if (!astUtils.isCommaToken(token)) {
+                        return;
+                    }
+
+                    const previousToken = tokensAndComments[i - 1];
+                    const nextToken = tokensAndComments[i + 1];
+
+                    if (
+                        previousToken &&
+                        !astUtils.isCommaToken(previousToken) && // ignore spacing between two commas
+
+                        /*
+                         * `commaTokensToIgnore` are ending commas of `null` elements (array holes/elisions).
+                         * In addition to spacing between two commas, this can also ignore:
+                         *
+                         *   - Spacing after `[` (controlled by array-bracket-spacing)
+                         *       Example: [ , ]
+                         *                 ^
+                         *   - Spacing after a comment (for backwards compatibility, this was possibly unintentional)
+                         *       Example: [a, /* * / ,]
+                         *                          ^
+                         */
+                        !commaTokensToIgnore.includes(token) &&
+
+                        astUtils.isTokenOnSameLine(previousToken, token) &&
+                        options.before !== sourceCode.isSpaceBetweenTokens(previousToken, token)
+                    ) {
+                        report(token, "before", previousToken);
+                    }
+
+                    if (
+                        nextToken &&
+                        !astUtils.isCommaToken(nextToken) && // ignore spacing between two commas
+                        !astUtils.isClosingParenToken(nextToken) && // controlled by space-in-parens
+                        !astUtils.isClosingBracketToken(nextToken) && // controlled by array-bracket-spacing
+                        !astUtils.isClosingBraceToken(nextToken) && // controlled by object-curly-spacing
+                        !(!options.after && nextToken.type === "Line") && // special case, allow space before line comment
+                        astUtils.isTokenOnSameLine(token, nextToken) &&
+                        options.after !== sourceCode.isSpaceBetweenTokens(token, nextToken)
+                    ) {
+                        report(token, "after", nextToken);
+                    }
+                });
+            },
+            ArrayExpression: addNullElementsToIgnoreList,
+            ArrayPattern: addNullElementsToIgnoreList
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/comma-style.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/comma-style.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/comma-style.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,314 @@
+/**
+ * @fileoverview Comma style - enforces comma styles of two types: last and first
+ * @author Vignesh Anand aka vegetableman
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent comma style",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/comma-style"
+        },
+
+        fixable: "code",
+
+        schema: [
+            {
+                enum: ["first", "last"]
+            },
+            {
+                type: "object",
+                properties: {
+                    exceptions: {
+                        type: "object",
+                        additionalProperties: {
+                            type: "boolean"
+                        }
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedLineBeforeAndAfterComma: "Bad line breaking before and after ','.",
+            expectedCommaFirst: "',' should be placed first.",
+            expectedCommaLast: "',' should be placed last."
+        }
+    },
+
+    create(context) {
+        const style = context.options[0] || "last",
+            sourceCode = context.sourceCode;
+        const exceptions = {
+            ArrayPattern: true,
+            ArrowFunctionExpression: true,
+            CallExpression: true,
+            FunctionDeclaration: true,
+            FunctionExpression: true,
+            ImportDeclaration: true,
+            ObjectPattern: true,
+            NewExpression: true
+        };
+
+        if (context.options.length === 2 && Object.prototype.hasOwnProperty.call(context.options[1], "exceptions")) {
+            const keys = Object.keys(context.options[1].exceptions);
+
+            for (let i = 0; i < keys.length; i++) {
+                exceptions[keys[i]] = context.options[1].exceptions[keys[i]];
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Modified text based on the style
+         * @param {string} styleType Style type
+         * @param {string} text Source code text
+         * @returns {string} modified text
+         * @private
+         */
+        function getReplacedText(styleType, text) {
+            switch (styleType) {
+                case "between":
+                    return `,${text.replace(astUtils.LINEBREAK_MATCHER, "")}`;
+
+                case "first":
+                    return `${text},`;
+
+                case "last":
+                    return `,${text}`;
+
+                default:
+                    return "";
+            }
+        }
+
+        /**
+         * Determines the fixer function for a given style.
+         * @param {string} styleType comma style
+         * @param {ASTNode} previousItemToken The token to check.
+         * @param {ASTNode} commaToken The token to check.
+         * @param {ASTNode} currentItemToken The token to check.
+         * @returns {Function} Fixer function
+         * @private
+         */
+        function getFixerFunction(styleType, previousItemToken, commaToken, currentItemToken) {
+            const text =
+                sourceCode.text.slice(previousItemToken.range[1], commaToken.range[0]) +
+                sourceCode.text.slice(commaToken.range[1], currentItemToken.range[0]);
+            const range = [previousItemToken.range[1], currentItemToken.range[0]];
+
+            return function(fixer) {
+                return fixer.replaceTextRange(range, getReplacedText(styleType, text));
+            };
+        }
+
+        /**
+         * Validates the spacing around single items in lists.
+         * @param {Token} previousItemToken The last token from the previous item.
+         * @param {Token} commaToken The token representing the comma.
+         * @param {Token} currentItemToken The first token of the current item.
+         * @param {Token} reportItem The item to use when reporting an error.
+         * @returns {void}
+         * @private
+         */
+        function validateCommaItemSpacing(previousItemToken, commaToken, currentItemToken, reportItem) {
+
+            // if single line
+            if (astUtils.isTokenOnSameLine(commaToken, currentItemToken) &&
+                    astUtils.isTokenOnSameLine(previousItemToken, commaToken)) {
+
+                // do nothing.
+
+            } else if (!astUtils.isTokenOnSameLine(commaToken, currentItemToken) &&
+                    !astUtils.isTokenOnSameLine(previousItemToken, commaToken)) {
+
+                const comment = sourceCode.getCommentsAfter(commaToken)[0];
+                const styleType = comment && comment.type === "Block" && astUtils.isTokenOnSameLine(commaToken, comment)
+                    ? style
+                    : "between";
+
+                // lone comma
+                context.report({
+                    node: reportItem,
+                    loc: commaToken.loc,
+                    messageId: "unexpectedLineBeforeAndAfterComma",
+                    fix: getFixerFunction(styleType, previousItemToken, commaToken, currentItemToken)
+                });
+
+            } else if (style === "first" && !astUtils.isTokenOnSameLine(commaToken, currentItemToken)) {
+
+                context.report({
+                    node: reportItem,
+                    loc: commaToken.loc,
+                    messageId: "expectedCommaFirst",
+                    fix: getFixerFunction(style, previousItemToken, commaToken, currentItemToken)
+                });
+
+            } else if (style === "last" && astUtils.isTokenOnSameLine(commaToken, currentItemToken)) {
+
+                context.report({
+                    node: reportItem,
+                    loc: commaToken.loc,
+                    messageId: "expectedCommaLast",
+                    fix: getFixerFunction(style, previousItemToken, commaToken, currentItemToken)
+                });
+            }
+        }
+
+        /**
+         * Checks the comma placement with regards to a declaration/property/element
+         * @param {ASTNode} node The binary expression node to check
+         * @param {string} property The property of the node containing child nodes.
+         * @private
+         * @returns {void}
+         */
+        function validateComma(node, property) {
+            const items = node[property],
+                arrayLiteral = (node.type === "ArrayExpression" || node.type === "ArrayPattern");
+
+            if (items.length > 1 || arrayLiteral) {
+
+                // seed as opening [
+                let previousItemToken = sourceCode.getFirstToken(node);
+
+                items.forEach(item => {
+                    const commaToken = item ? sourceCode.getTokenBefore(item) : previousItemToken,
+                        currentItemToken = item ? sourceCode.getFirstToken(item) : sourceCode.getTokenAfter(commaToken),
+                        reportItem = item || currentItemToken;
+
+                    /*
+                     * This works by comparing three token locations:
+                     * - previousItemToken is the last token of the previous item
+                     * - commaToken is the location of the comma before the current item
+                     * - currentItemToken is the first token of the current item
+                     *
+                     * These values get switched around if item is undefined.
+                     * previousItemToken will refer to the last token not belonging
+                     * to the current item, which could be a comma or an opening
+                     * square bracket. currentItemToken could be a comma.
+                     *
+                     * All comparisons are done based on these tokens directly, so
+                     * they are always valid regardless of an undefined item.
+                     */
+                    if (astUtils.isCommaToken(commaToken)) {
+                        validateCommaItemSpacing(previousItemToken, commaToken, currentItemToken, reportItem);
+                    }
+
+                    if (item) {
+                        const tokenAfterItem = sourceCode.getTokenAfter(item, astUtils.isNotClosingParenToken);
+
+                        previousItemToken = tokenAfterItem
+                            ? sourceCode.getTokenBefore(tokenAfterItem)
+                            : sourceCode.ast.tokens[sourceCode.ast.tokens.length - 1];
+                    } else {
+                        previousItemToken = currentItemToken;
+                    }
+                });
+
+                /*
+                 * Special case for array literals that have empty last items, such
+                 * as [ 1, 2, ]. These arrays only have two items show up in the
+                 * AST, so we need to look at the token to verify that there's no
+                 * dangling comma.
+                 */
+                if (arrayLiteral) {
+
+                    const lastToken = sourceCode.getLastToken(node),
+                        nextToLastToken = sourceCode.getTokenBefore(lastToken);
+
+                    if (astUtils.isCommaToken(nextToLastToken)) {
+                        validateCommaItemSpacing(
+                            sourceCode.getTokenBefore(nextToLastToken),
+                            nextToLastToken,
+                            lastToken,
+                            lastToken
+                        );
+                    }
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        const nodes = {};
+
+        if (!exceptions.VariableDeclaration) {
+            nodes.VariableDeclaration = function(node) {
+                validateComma(node, "declarations");
+            };
+        }
+        if (!exceptions.ObjectExpression) {
+            nodes.ObjectExpression = function(node) {
+                validateComma(node, "properties");
+            };
+        }
+        if (!exceptions.ObjectPattern) {
+            nodes.ObjectPattern = function(node) {
+                validateComma(node, "properties");
+            };
+        }
+        if (!exceptions.ArrayExpression) {
+            nodes.ArrayExpression = function(node) {
+                validateComma(node, "elements");
+            };
+        }
+        if (!exceptions.ArrayPattern) {
+            nodes.ArrayPattern = function(node) {
+                validateComma(node, "elements");
+            };
+        }
+        if (!exceptions.FunctionDeclaration) {
+            nodes.FunctionDeclaration = function(node) {
+                validateComma(node, "params");
+            };
+        }
+        if (!exceptions.FunctionExpression) {
+            nodes.FunctionExpression = function(node) {
+                validateComma(node, "params");
+            };
+        }
+        if (!exceptions.ArrowFunctionExpression) {
+            nodes.ArrowFunctionExpression = function(node) {
+                validateComma(node, "params");
+            };
+        }
+        if (!exceptions.CallExpression) {
+            nodes.CallExpression = function(node) {
+                validateComma(node, "arguments");
+            };
+        }
+        if (!exceptions.ImportDeclaration) {
+            nodes.ImportDeclaration = function(node) {
+                validateComma(node, "specifiers");
+            };
+        }
+        if (!exceptions.NewExpression) {
+            nodes.NewExpression = function(node) {
+                validateComma(node, "arguments");
+            };
+        }
+
+        return nodes;
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/complexity.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/complexity.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/complexity.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,165 @@
+/**
+ * @fileoverview Counts the cyclomatic complexity of each function of the script. See http://en.wikipedia.org/wiki/Cyclomatic_complexity.
+ * Counts the number of if, conditional, for, while, try, switch/case,
+ * @author Patrick Brosset
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const { upperCaseFirst } = require("../shared/string-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce a maximum cyclomatic complexity allowed in a program",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/complexity"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            maximum: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            complex: "{{name}} has a complexity of {{complexity}}. Maximum allowed is {{max}}."
+        }
+    },
+
+    create(context) {
+        const option = context.options[0];
+        let THRESHOLD = 20;
+
+        if (
+            typeof option === "object" &&
+            (Object.prototype.hasOwnProperty.call(option, "maximum") || Object.prototype.hasOwnProperty.call(option, "max"))
+        ) {
+            THRESHOLD = option.maximum || option.max;
+        } else if (typeof option === "number") {
+            THRESHOLD = option;
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        // Using a stack to store complexity per code path
+        const complexities = [];
+
+        /**
+         * Increase the complexity of the code path in context
+         * @returns {void}
+         * @private
+         */
+        function increaseComplexity() {
+            complexities[complexities.length - 1]++;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+
+            onCodePathStart() {
+
+                // The initial complexity is 1, representing one execution path in the CodePath
+                complexities.push(1);
+            },
+
+            // Each branching in the code adds 1 to the complexity
+            CatchClause: increaseComplexity,
+            ConditionalExpression: increaseComplexity,
+            LogicalExpression: increaseComplexity,
+            ForStatement: increaseComplexity,
+            ForInStatement: increaseComplexity,
+            ForOfStatement: increaseComplexity,
+            IfStatement: increaseComplexity,
+            WhileStatement: increaseComplexity,
+            DoWhileStatement: increaseComplexity,
+
+            // Avoid `default`
+            "SwitchCase[test]": increaseComplexity,
+
+            // Logical assignment operators have short-circuiting behavior
+            AssignmentExpression(node) {
+                if (astUtils.isLogicalAssignmentOperator(node.operator)) {
+                    increaseComplexity();
+                }
+            },
+
+            onCodePathEnd(codePath, node) {
+                const complexity = complexities.pop();
+
+                /*
+                 * This rule only evaluates complexity of functions, so "program" is excluded.
+                 * Class field initializers and class static blocks are implicit functions. Therefore,
+                 * they shouldn't contribute to the enclosing function's complexity, but their
+                 * own complexity should be evaluated.
+                 */
+                if (
+                    codePath.origin !== "function" &&
+                    codePath.origin !== "class-field-initializer" &&
+                    codePath.origin !== "class-static-block"
+                ) {
+                    return;
+                }
+
+                if (complexity > THRESHOLD) {
+                    let name;
+
+                    if (codePath.origin === "class-field-initializer") {
+                        name = "class field initializer";
+                    } else if (codePath.origin === "class-static-block") {
+                        name = "class static block";
+                    } else {
+                        name = astUtils.getFunctionNameWithKind(node);
+                    }
+
+                    context.report({
+                        node,
+                        messageId: "complex",
+                        data: {
+                            name: upperCaseFirst(name),
+                            complexity,
+                            max: THRESHOLD
+                        }
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/computed-property-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/computed-property-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/computed-property-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,208 @@
+/**
+ * @fileoverview Disallows or enforces spaces inside computed properties.
+ * @author Jamund Ferguson
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent spacing inside computed property brackets",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/computed-property-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            },
+            {
+                type: "object",
+                properties: {
+                    enforceForClassMembers: {
+                        type: "boolean",
+                        default: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedSpaceBefore: "There should be no space before '{{tokenValue}}'.",
+            unexpectedSpaceAfter: "There should be no space after '{{tokenValue}}'.",
+
+            missingSpaceBefore: "A space is required before '{{tokenValue}}'.",
+            missingSpaceAfter: "A space is required after '{{tokenValue}}'."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const propertyNameMustBeSpaced = context.options[0] === "always"; // default is "never"
+        const enforceForClassMembers = !context.options[1] || context.options[1].enforceForClassMembers;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Reports that there shouldn't be a space after the first token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @param {Token} tokenAfter The token after `token`.
+         * @returns {void}
+         */
+        function reportNoBeginningSpace(node, token, tokenAfter) {
+            context.report({
+                node,
+                loc: { start: token.loc.end, end: tokenAfter.loc.start },
+                messageId: "unexpectedSpaceAfter",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.removeRange([token.range[1], tokenAfter.range[0]]);
+                }
+            });
+        }
+
+        /**
+         * Reports that there shouldn't be a space before the last token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @param {Token} tokenBefore The token before `token`.
+         * @returns {void}
+         */
+        function reportNoEndingSpace(node, token, tokenBefore) {
+            context.report({
+                node,
+                loc: { start: tokenBefore.loc.end, end: token.loc.start },
+                messageId: "unexpectedSpaceBefore",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.removeRange([tokenBefore.range[1], token.range[0]]);
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a space after the first token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredBeginningSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc,
+                messageId: "missingSpaceAfter",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.insertTextAfter(token, " ");
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a space before the last token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredEndingSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc,
+                messageId: "missingSpaceBefore",
+                data: {
+                    tokenValue: token.value
+                },
+                fix(fixer) {
+                    return fixer.insertTextBefore(token, " ");
+                }
+            });
+        }
+
+        /**
+         * Returns a function that checks the spacing of a node on the property name
+         * that was passed in.
+         * @param {string} propertyName The property on the node to check for spacing
+         * @returns {Function} A function that will check spacing on a node
+         */
+        function checkSpacing(propertyName) {
+            return function(node) {
+                if (!node.computed) {
+                    return;
+                }
+
+                const property = node[propertyName];
+
+                const before = sourceCode.getTokenBefore(property, astUtils.isOpeningBracketToken),
+                    first = sourceCode.getTokenAfter(before, { includeComments: true }),
+                    after = sourceCode.getTokenAfter(property, astUtils.isClosingBracketToken),
+                    last = sourceCode.getTokenBefore(after, { includeComments: true });
+
+                if (astUtils.isTokenOnSameLine(before, first)) {
+                    if (propertyNameMustBeSpaced) {
+                        if (!sourceCode.isSpaceBetweenTokens(before, first) && astUtils.isTokenOnSameLine(before, first)) {
+                            reportRequiredBeginningSpace(node, before);
+                        }
+                    } else {
+                        if (sourceCode.isSpaceBetweenTokens(before, first)) {
+                            reportNoBeginningSpace(node, before, first);
+                        }
+                    }
+                }
+
+                if (astUtils.isTokenOnSameLine(last, after)) {
+                    if (propertyNameMustBeSpaced) {
+                        if (!sourceCode.isSpaceBetweenTokens(last, after) && astUtils.isTokenOnSameLine(last, after)) {
+                            reportRequiredEndingSpace(node, after);
+                        }
+                    } else {
+                        if (sourceCode.isSpaceBetweenTokens(last, after)) {
+                            reportNoEndingSpace(node, after, last);
+                        }
+                    }
+                }
+            };
+        }
+
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        const listeners = {
+            Property: checkSpacing("key"),
+            MemberExpression: checkSpacing("property")
+        };
+
+        if (enforceForClassMembers) {
+            listeners.MethodDefinition =
+                listeners.PropertyDefinition = listeners.Property;
+        }
+
+        return listeners;
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/consistent-return.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/consistent-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/consistent-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,210 @@
+/**
+ * @fileoverview Rule to flag consistent return values
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const { upperCaseFirst } = require("../shared/string-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks all segments in a set and returns true if all are unreachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if all segments are unreachable; false otherwise.
+ */
+function areAllSegmentsUnreachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+/**
+ * Checks whether a given node is a `constructor` method in an ES6 class
+ * @param {ASTNode} node A node to check
+ * @returns {boolean} `true` if the node is a `constructor` method
+ */
+function isClassConstructor(node) {
+    return node.type === "FunctionExpression" &&
+        node.parent &&
+        node.parent.type === "MethodDefinition" &&
+        node.parent.kind === "constructor";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require `return` statements to either always or never specify values",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/consistent-return"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                treatUndefinedAsUnspecified: {
+                    type: "boolean",
+                    default: false
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            missingReturn: "Expected to return a value at the end of {{name}}.",
+            missingReturnValue: "{{name}} expected a return value.",
+            unexpectedReturnValue: "{{name}} expected no return value."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const treatUndefinedAsUnspecified = options.treatUndefinedAsUnspecified === true;
+        let funcInfo = null;
+
+        /**
+         * Checks whether of not the implicit returning is consistent if the last
+         * code path segment is reachable.
+         * @param {ASTNode} node A program/function node to check.
+         * @returns {void}
+         */
+        function checkLastSegment(node) {
+            let loc, name;
+
+            /*
+             * Skip if it expected no return value or unreachable.
+             * When unreachable, all paths are returned or thrown.
+             */
+            if (!funcInfo.hasReturnValue ||
+                areAllSegmentsUnreachable(funcInfo.currentSegments) ||
+                astUtils.isES5Constructor(node) ||
+                isClassConstructor(node)
+            ) {
+                return;
+            }
+
+            // Adjust a location and a message.
+            if (node.type === "Program") {
+
+                // The head of program.
+                loc = { line: 1, column: 0 };
+                name = "program";
+            } else if (node.type === "ArrowFunctionExpression") {
+
+                // `=>` token
+                loc = context.sourceCode.getTokenBefore(node.body, astUtils.isArrowToken).loc;
+            } else if (
+                node.parent.type === "MethodDefinition" ||
+                (node.parent.type === "Property" && node.parent.method)
+            ) {
+
+                // Method name.
+                loc = node.parent.key.loc;
+            } else {
+
+                // Function name or `function` keyword.
+                loc = (node.id || context.sourceCode.getFirstToken(node)).loc;
+            }
+
+            if (!name) {
+                name = astUtils.getFunctionNameWithKind(node);
+            }
+
+            // Reports.
+            context.report({
+                node,
+                loc,
+                messageId: "missingReturn",
+                data: { name }
+            });
+        }
+
+        return {
+
+            // Initializes/Disposes state of each code path.
+            onCodePathStart(codePath, node) {
+                funcInfo = {
+                    upper: funcInfo,
+                    codePath,
+                    hasReturn: false,
+                    hasReturnValue: false,
+                    messageId: "",
+                    node,
+                    currentSegments: new Set()
+                };
+            },
+            onCodePathEnd() {
+                funcInfo = funcInfo.upper;
+            },
+
+            onUnreachableCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+            onCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+
+            // Reports a given return statement if it's inconsistent.
+            ReturnStatement(node) {
+                const argument = node.argument;
+                let hasReturnValue = Boolean(argument);
+
+                if (treatUndefinedAsUnspecified && hasReturnValue) {
+                    hasReturnValue = !astUtils.isSpecificId(argument, "undefined") && argument.operator !== "void";
+                }
+
+                if (!funcInfo.hasReturn) {
+                    funcInfo.hasReturn = true;
+                    funcInfo.hasReturnValue = hasReturnValue;
+                    funcInfo.messageId = hasReturnValue ? "missingReturnValue" : "unexpectedReturnValue";
+                    funcInfo.data = {
+                        name: funcInfo.node.type === "Program"
+                            ? "Program"
+                            : upperCaseFirst(astUtils.getFunctionNameWithKind(funcInfo.node))
+                    };
+                } else if (funcInfo.hasReturnValue !== hasReturnValue) {
+                    context.report({
+                        node,
+                        messageId: funcInfo.messageId,
+                        data: funcInfo.data
+                    });
+                }
+            },
+
+            // Reports a given program/function if the implicit returning is not consistent.
+            "Program:exit": checkLastSegment,
+            "FunctionDeclaration:exit": checkLastSegment,
+            "FunctionExpression:exit": checkLastSegment,
+            "ArrowFunctionExpression:exit": checkLastSegment
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/consistent-this.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/consistent-this.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/consistent-this.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,153 @@
+/**
+ * @fileoverview Rule to enforce consistent naming of "this" context variables
+ * @author Raphael Pigulla
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce consistent naming when capturing the current execution context",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/consistent-this"
+        },
+
+        schema: {
+            type: "array",
+            items: {
+                type: "string",
+                minLength: 1
+            },
+            uniqueItems: true
+        },
+
+        messages: {
+            aliasNotAssignedToThis: "Designated alias '{{name}}' is not assigned to 'this'.",
+            unexpectedAlias: "Unexpected alias '{{name}}' for 'this'."
+        }
+    },
+
+    create(context) {
+        let aliases = [];
+        const sourceCode = context.sourceCode;
+
+        if (context.options.length === 0) {
+            aliases.push("that");
+        } else {
+            aliases = context.options;
+        }
+
+        /**
+         * Reports that a variable declarator or assignment expression is assigning
+         * a non-'this' value to the specified alias.
+         * @param {ASTNode} node The assigning node.
+         * @param {string} name the name of the alias that was incorrectly used.
+         * @returns {void}
+         */
+        function reportBadAssignment(node, name) {
+            context.report({ node, messageId: "aliasNotAssignedToThis", data: { name } });
+        }
+
+        /**
+         * Checks that an assignment to an identifier only assigns 'this' to the
+         * appropriate alias, and the alias is only assigned to 'this'.
+         * @param {ASTNode} node The assigning node.
+         * @param {Identifier} name The name of the variable assigned to.
+         * @param {Expression} value The value of the assignment.
+         * @returns {void}
+         */
+        function checkAssignment(node, name, value) {
+            const isThis = value.type === "ThisExpression";
+
+            if (aliases.includes(name)) {
+                if (!isThis || node.operator && node.operator !== "=") {
+                    reportBadAssignment(node, name);
+                }
+            } else if (isThis) {
+                context.report({ node, messageId: "unexpectedAlias", data: { name } });
+            }
+        }
+
+        /**
+         * Ensures that a variable declaration of the alias in a program or function
+         * is assigned to the correct value.
+         * @param {string} alias alias the check the assignment of.
+         * @param {Object} scope scope of the current code we are checking.
+         * @private
+         * @returns {void}
+         */
+        function checkWasAssigned(alias, scope) {
+            const variable = scope.set.get(alias);
+
+            if (!variable) {
+                return;
+            }
+
+            if (variable.defs.some(def => def.node.type === "VariableDeclarator" &&
+                def.node.init !== null)) {
+                return;
+            }
+
+            /*
+             * The alias has been declared and not assigned: check it was
+             * assigned later in the same scope.
+             */
+            if (!variable.references.some(reference => {
+                const write = reference.writeExpr;
+
+                return (
+                    reference.from === scope &&
+                    write && write.type === "ThisExpression" &&
+                    write.parent.operator === "="
+                );
+            })) {
+                variable.defs.map(def => def.node).forEach(node => {
+                    reportBadAssignment(node, alias);
+                });
+            }
+        }
+
+        /**
+         * Check each alias to ensure that is was assigned to the correct value.
+         * @param {ASTNode} node The node that represents the scope to check.
+         * @returns {void}
+         */
+        function ensureWasAssigned(node) {
+            const scope = sourceCode.getScope(node);
+
+            aliases.forEach(alias => {
+                checkWasAssigned(alias, scope);
+            });
+        }
+
+        return {
+            "Program:exit": ensureWasAssigned,
+            "FunctionExpression:exit": ensureWasAssigned,
+            "FunctionDeclaration:exit": ensureWasAssigned,
+
+            VariableDeclarator(node) {
+                const id = node.id;
+                const isDestructuring =
+                    id.type === "ArrayPattern" || id.type === "ObjectPattern";
+
+                if (node.init !== null && !isDestructuring) {
+                    checkAssignment(node, id.name, node.init);
+                }
+            },
+
+            AssignmentExpression(node) {
+                if (node.left.type === "Identifier") {
+                    checkAssignment(node, node.left.name, node.right);
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/constructor-super.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/constructor-super.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/constructor-super.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,446 @@
+/**
+ * @fileoverview A rule to verify `super()` callings in constructor.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks all segments in a set and returns true if any are reachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if any segment is reachable; false otherwise.
+ */
+function isAnySegmentReachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+/**
+ * Checks whether or not a given node is a constructor.
+ * @param {ASTNode} node A node to check. This node type is one of
+ *   `Program`, `FunctionDeclaration`, `FunctionExpression`, and
+ *   `ArrowFunctionExpression`.
+ * @returns {boolean} `true` if the node is a constructor.
+ */
+function isConstructorFunction(node) {
+    return (
+        node.type === "FunctionExpression" &&
+        node.parent.type === "MethodDefinition" &&
+        node.parent.kind === "constructor"
+    );
+}
+
+/**
+ * Checks whether a given node can be a constructor or not.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} `true` if the node can be a constructor.
+ */
+function isPossibleConstructor(node) {
+    if (!node) {
+        return false;
+    }
+
+    switch (node.type) {
+        case "ClassExpression":
+        case "FunctionExpression":
+        case "ThisExpression":
+        case "MemberExpression":
+        case "CallExpression":
+        case "NewExpression":
+        case "ChainExpression":
+        case "YieldExpression":
+        case "TaggedTemplateExpression":
+        case "MetaProperty":
+            return true;
+
+        case "Identifier":
+            return node.name !== "undefined";
+
+        case "AssignmentExpression":
+            if (["=", "&&="].includes(node.operator)) {
+                return isPossibleConstructor(node.right);
+            }
+
+            if (["||=", "??="].includes(node.operator)) {
+                return (
+                    isPossibleConstructor(node.left) ||
+                    isPossibleConstructor(node.right)
+                );
+            }
+
+            /**
+             * All other assignment operators are mathematical assignment operators (arithmetic or bitwise).
+             * An assignment expression with a mathematical operator can either evaluate to a primitive value,
+             * or throw, depending on the operands. Thus, it cannot evaluate to a constructor function.
+             */
+            return false;
+
+        case "LogicalExpression":
+
+            /*
+             * If the && operator short-circuits, the left side was falsy and therefore not a constructor, and if
+             * it doesn't short-circuit, it takes the value from the right side, so the right side must always be a
+             * possible constructor. A future improvement could verify that the left side could be truthy by
+             * excluding falsy literals.
+             */
+            if (node.operator === "&&") {
+                return isPossibleConstructor(node.right);
+            }
+
+            return (
+                isPossibleConstructor(node.left) ||
+                isPossibleConstructor(node.right)
+            );
+
+        case "ConditionalExpression":
+            return (
+                isPossibleConstructor(node.alternate) ||
+                isPossibleConstructor(node.consequent)
+            );
+
+        case "SequenceExpression": {
+            const lastExpression = node.expressions[node.expressions.length - 1];
+
+            return isPossibleConstructor(lastExpression);
+        }
+
+        default:
+            return false;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Require `super()` calls in constructors",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/constructor-super"
+        },
+
+        schema: [],
+
+        messages: {
+            missingSome: "Lacked a call of 'super()' in some code paths.",
+            missingAll: "Expected to call 'super()'.",
+
+            duplicate: "Unexpected duplicate 'super()'.",
+            badSuper: "Unexpected 'super()' because 'super' is not a constructor.",
+            unexpected: "Unexpected 'super()'."
+        }
+    },
+
+    create(context) {
+
+        /*
+         * {{hasExtends: boolean, scope: Scope, codePath: CodePath}[]}
+         * Information for each constructor.
+         * - upper:      Information of the upper constructor.
+         * - hasExtends: A flag which shows whether own class has a valid `extends`
+         *               part.
+         * - scope:      The scope of own class.
+         * - codePath:   The code path object of the constructor.
+         */
+        let funcInfo = null;
+
+        /*
+         * {Map<string, {calledInSomePaths: boolean, calledInEveryPaths: boolean}>}
+         * Information for each code path segment.
+         * - calledInSomePaths:  A flag of be called `super()` in some code paths.
+         * - calledInEveryPaths: A flag of be called `super()` in all code paths.
+         * - validNodes:
+         */
+        let segInfoMap = Object.create(null);
+
+        /**
+         * Gets the flag which shows `super()` is called in some paths.
+         * @param {CodePathSegment} segment A code path segment to get.
+         * @returns {boolean} The flag which shows `super()` is called in some paths
+         */
+        function isCalledInSomePath(segment) {
+            return segment.reachable && segInfoMap[segment.id].calledInSomePaths;
+        }
+
+        /**
+         * Gets the flag which shows `super()` is called in all paths.
+         * @param {CodePathSegment} segment A code path segment to get.
+         * @returns {boolean} The flag which shows `super()` is called in all paths.
+         */
+        function isCalledInEveryPath(segment) {
+
+            /*
+             * If specific segment is the looped segment of the current segment,
+             * skip the segment.
+             * If not skipped, this never becomes true after a loop.
+             */
+            if (segment.nextSegments.length === 1 &&
+                segment.nextSegments[0].isLoopedPrevSegment(segment)
+            ) {
+                return true;
+            }
+            return segment.reachable && segInfoMap[segment.id].calledInEveryPaths;
+        }
+
+        return {
+
+            /**
+             * Stacks a constructor information.
+             * @param {CodePath} codePath A code path which was started.
+             * @param {ASTNode} node The current node.
+             * @returns {void}
+             */
+            onCodePathStart(codePath, node) {
+                if (isConstructorFunction(node)) {
+
+                    // Class > ClassBody > MethodDefinition > FunctionExpression
+                    const classNode = node.parent.parent.parent;
+                    const superClass = classNode.superClass;
+
+                    funcInfo = {
+                        upper: funcInfo,
+                        isConstructor: true,
+                        hasExtends: Boolean(superClass),
+                        superIsConstructor: isPossibleConstructor(superClass),
+                        codePath,
+                        currentSegments: new Set()
+                    };
+                } else {
+                    funcInfo = {
+                        upper: funcInfo,
+                        isConstructor: false,
+                        hasExtends: false,
+                        superIsConstructor: false,
+                        codePath,
+                        currentSegments: new Set()
+                    };
+                }
+            },
+
+            /**
+             * Pops a constructor information.
+             * And reports if `super()` lacked.
+             * @param {CodePath} codePath A code path which was ended.
+             * @param {ASTNode} node The current node.
+             * @returns {void}
+             */
+            onCodePathEnd(codePath, node) {
+                const hasExtends = funcInfo.hasExtends;
+
+                // Pop.
+                funcInfo = funcInfo.upper;
+
+                if (!hasExtends) {
+                    return;
+                }
+
+                // Reports if `super()` lacked.
+                const segments = codePath.returnedSegments;
+                const calledInEveryPaths = segments.every(isCalledInEveryPath);
+                const calledInSomePaths = segments.some(isCalledInSomePath);
+
+                if (!calledInEveryPaths) {
+                    context.report({
+                        messageId: calledInSomePaths
+                            ? "missingSome"
+                            : "missingAll",
+                        node: node.parent
+                    });
+                }
+            },
+
+            /**
+             * Initialize information of a given code path segment.
+             * @param {CodePathSegment} segment A code path segment to initialize.
+             * @returns {void}
+             */
+            onCodePathSegmentStart(segment) {
+
+                funcInfo.currentSegments.add(segment);
+
+                if (!(funcInfo && funcInfo.isConstructor && funcInfo.hasExtends)) {
+                    return;
+                }
+
+                // Initialize info.
+                const info = segInfoMap[segment.id] = {
+                    calledInSomePaths: false,
+                    calledInEveryPaths: false,
+                    validNodes: []
+                };
+
+                // When there are previous segments, aggregates these.
+                const prevSegments = segment.prevSegments;
+
+                if (prevSegments.length > 0) {
+                    info.calledInSomePaths = prevSegments.some(isCalledInSomePath);
+                    info.calledInEveryPaths = prevSegments.every(isCalledInEveryPath);
+                }
+            },
+
+            onUnreachableCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+
+            /**
+             * Update information of the code path segment when a code path was
+             * looped.
+             * @param {CodePathSegment} fromSegment The code path segment of the
+             *      end of a loop.
+             * @param {CodePathSegment} toSegment A code path segment of the head
+             *      of a loop.
+             * @returns {void}
+             */
+            onCodePathSegmentLoop(fromSegment, toSegment) {
+                if (!(funcInfo && funcInfo.isConstructor && funcInfo.hasExtends)) {
+                    return;
+                }
+
+                // Update information inside of the loop.
+                const isRealLoop = toSegment.prevSegments.length >= 2;
+
+                funcInfo.codePath.traverseSegments(
+                    { first: toSegment, last: fromSegment },
+                    segment => {
+                        const info = segInfoMap[segment.id];
+                        const prevSegments = segment.prevSegments;
+
+                        // Updates flags.
+                        info.calledInSomePaths = prevSegments.some(isCalledInSomePath);
+                        info.calledInEveryPaths = prevSegments.every(isCalledInEveryPath);
+
+                        // If flags become true anew, reports the valid nodes.
+                        if (info.calledInSomePaths || isRealLoop) {
+                            const nodes = info.validNodes;
+
+                            info.validNodes = [];
+
+                            for (let i = 0; i < nodes.length; ++i) {
+                                const node = nodes[i];
+
+                                context.report({
+                                    messageId: "duplicate",
+                                    node
+                                });
+                            }
+                        }
+                    }
+                );
+            },
+
+            /**
+             * Checks for a call of `super()`.
+             * @param {ASTNode} node A CallExpression node to check.
+             * @returns {void}
+             */
+            "CallExpression:exit"(node) {
+                if (!(funcInfo && funcInfo.isConstructor)) {
+                    return;
+                }
+
+                // Skips except `super()`.
+                if (node.callee.type !== "Super") {
+                    return;
+                }
+
+                // Reports if needed.
+                if (funcInfo.hasExtends) {
+                    const segments = funcInfo.currentSegments;
+                    let duplicate = false;
+                    let info = null;
+
+                    for (const segment of segments) {
+
+                        if (segment.reachable) {
+                            info = segInfoMap[segment.id];
+
+                            duplicate = duplicate || info.calledInSomePaths;
+                            info.calledInSomePaths = info.calledInEveryPaths = true;
+                        }
+                    }
+
+                    if (info) {
+                        if (duplicate) {
+                            context.report({
+                                messageId: "duplicate",
+                                node
+                            });
+                        } else if (!funcInfo.superIsConstructor) {
+                            context.report({
+                                messageId: "badSuper",
+                                node
+                            });
+                        } else {
+                            info.validNodes.push(node);
+                        }
+                    }
+                } else if (isAnySegmentReachable(funcInfo.currentSegments)) {
+                    context.report({
+                        messageId: "unexpected",
+                        node
+                    });
+                }
+            },
+
+            /**
+             * Set the mark to the returned path as `super()` was called.
+             * @param {ASTNode} node A ReturnStatement node to check.
+             * @returns {void}
+             */
+            ReturnStatement(node) {
+                if (!(funcInfo && funcInfo.isConstructor && funcInfo.hasExtends)) {
+                    return;
+                }
+
+                // Skips if no argument.
+                if (!node.argument) {
+                    return;
+                }
+
+                // Returning argument is a substitute of 'super()'.
+                const segments = funcInfo.currentSegments;
+
+                for (const segment of segments) {
+
+                    if (segment.reachable) {
+                        const info = segInfoMap[segment.id];
+
+                        info.calledInSomePaths = info.calledInEveryPaths = true;
+                    }
+                }
+            },
+
+            /**
+             * Resets state.
+             * @returns {void}
+             */
+            "Program:exit"() {
+                segInfoMap = Object.create(null);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/curly.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/curly.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/curly.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,486 @@
+/**
+ * @fileoverview Rule to flag statements without curly braces
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce consistent brace style for all control statements",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/curly"
+        },
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["all"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["multi", "multi-line", "multi-or-nest"]
+                        },
+                        {
+                            enum: ["consistent"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        },
+
+        fixable: "code",
+
+        messages: {
+            missingCurlyAfter: "Expected { after '{{name}}'.",
+            missingCurlyAfterCondition: "Expected { after '{{name}}' condition.",
+            unexpectedCurlyAfter: "Unnecessary { after '{{name}}'.",
+            unexpectedCurlyAfterCondition: "Unnecessary { after '{{name}}' condition."
+        }
+    },
+
+    create(context) {
+
+        const multiOnly = (context.options[0] === "multi");
+        const multiLine = (context.options[0] === "multi-line");
+        const multiOrNest = (context.options[0] === "multi-or-nest");
+        const consistent = (context.options[1] === "consistent");
+
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Determines if a given node is a one-liner that's on the same line as it's preceding code.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} True if the node is a one-liner that's on the same line as it's preceding code.
+         * @private
+         */
+        function isCollapsedOneLiner(node) {
+            const before = sourceCode.getTokenBefore(node);
+            const last = sourceCode.getLastToken(node);
+            const lastExcludingSemicolon = astUtils.isSemicolonToken(last) ? sourceCode.getTokenBefore(last) : last;
+
+            return before.loc.start.line === lastExcludingSemicolon.loc.end.line;
+        }
+
+        /**
+         * Determines if a given node is a one-liner.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} True if the node is a one-liner.
+         * @private
+         */
+        function isOneLiner(node) {
+            if (node.type === "EmptyStatement") {
+                return true;
+            }
+
+            const first = sourceCode.getFirstToken(node);
+            const last = sourceCode.getLastToken(node);
+            const lastExcludingSemicolon = astUtils.isSemicolonToken(last) ? sourceCode.getTokenBefore(last) : last;
+
+            return first.loc.start.line === lastExcludingSemicolon.loc.end.line;
+        }
+
+        /**
+         * Determines if the given node is a lexical declaration (let, const, function, or class)
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} True if the node is a lexical declaration
+         * @private
+         */
+        function isLexicalDeclaration(node) {
+            if (node.type === "VariableDeclaration") {
+                return node.kind === "const" || node.kind === "let";
+            }
+
+            return node.type === "FunctionDeclaration" || node.type === "ClassDeclaration";
+        }
+
+        /**
+         * Checks if the given token is an `else` token or not.
+         * @param {Token} token The token to check.
+         * @returns {boolean} `true` if the token is an `else` token.
+         */
+        function isElseKeywordToken(token) {
+            return token.value === "else" && token.type === "Keyword";
+        }
+
+        /**
+         * Determines whether the given node has an `else` keyword token as the first token after.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} `true` if the node is followed by an `else` keyword token.
+         */
+        function isFollowedByElseKeyword(node) {
+            const nextToken = sourceCode.getTokenAfter(node);
+
+            return Boolean(nextToken) && isElseKeywordToken(nextToken);
+        }
+
+        /**
+         * Determines if a semicolon needs to be inserted after removing a set of curly brackets, in order to avoid a SyntaxError.
+         * @param {Token} closingBracket The } token
+         * @returns {boolean} `true` if a semicolon needs to be inserted after the last statement in the block.
+         */
+        function needsSemicolon(closingBracket) {
+            const tokenBefore = sourceCode.getTokenBefore(closingBracket);
+            const tokenAfter = sourceCode.getTokenAfter(closingBracket);
+            const lastBlockNode = sourceCode.getNodeByRangeIndex(tokenBefore.range[0]);
+
+            if (astUtils.isSemicolonToken(tokenBefore)) {
+
+                // If the last statement already has a semicolon, don't add another one.
+                return false;
+            }
+
+            if (!tokenAfter) {
+
+                // If there are no statements after this block, there is no need to add a semicolon.
+                return false;
+            }
+
+            if (lastBlockNode.type === "BlockStatement" && lastBlockNode.parent.type !== "FunctionExpression" && lastBlockNode.parent.type !== "ArrowFunctionExpression") {
+
+                /*
+                 * If the last node surrounded by curly brackets is a BlockStatement (other than a FunctionExpression or an ArrowFunctionExpression),
+                 * don't insert a semicolon. Otherwise, the semicolon would be parsed as a separate statement, which would cause
+                 * a SyntaxError if it was followed by `else`.
+                 */
+                return false;
+            }
+
+            if (tokenBefore.loc.end.line === tokenAfter.loc.start.line) {
+
+                // If the next token is on the same line, insert a semicolon.
+                return true;
+            }
+
+            if (/^[([/`+-]/u.test(tokenAfter.value)) {
+
+                // If the next token starts with a character that would disrupt ASI, insert a semicolon.
+                return true;
+            }
+
+            if (tokenBefore.type === "Punctuator" && (tokenBefore.value === "++" || tokenBefore.value === "--")) {
+
+                // If the last token is ++ or --, insert a semicolon to avoid disrupting ASI.
+                return true;
+            }
+
+            // Otherwise, do not insert a semicolon.
+            return false;
+        }
+
+        /**
+         * Determines whether the code represented by the given node contains an `if` statement
+         * that would become associated with an `else` keyword directly appended to that code.
+         *
+         * Examples where it returns `true`:
+         *
+         *    if (a)
+         *        foo();
+         *
+         *    if (a) {
+         *        foo();
+         *    }
+         *
+         *    if (a)
+         *        foo();
+         *    else if (b)
+         *        bar();
+         *
+         *    while (a)
+         *        if (b)
+         *            if(c)
+         *                foo();
+         *            else
+         *                bar();
+         *
+         * Examples where it returns `false`:
+         *
+         *    if (a)
+         *        foo();
+         *    else
+         *        bar();
+         *
+         *    while (a) {
+         *        if (b)
+         *            if(c)
+         *                foo();
+         *            else
+         *                bar();
+         *    }
+         *
+         *    while (a)
+         *        if (b) {
+         *            if(c)
+         *                foo();
+         *        }
+         *        else
+         *            bar();
+         * @param {ASTNode} node Node representing the code to check.
+         * @returns {boolean} `true` if an `if` statement within the code would become associated with an `else` appended to that code.
+         */
+        function hasUnsafeIf(node) {
+            switch (node.type) {
+                case "IfStatement":
+                    if (!node.alternate) {
+                        return true;
+                    }
+                    return hasUnsafeIf(node.alternate);
+                case "ForStatement":
+                case "ForInStatement":
+                case "ForOfStatement":
+                case "LabeledStatement":
+                case "WithStatement":
+                case "WhileStatement":
+                    return hasUnsafeIf(node.body);
+                default:
+                    return false;
+            }
+        }
+
+        /**
+         * Determines whether the existing curly braces around the single statement are necessary to preserve the semantics of the code.
+         * The braces, which make the given block body, are necessary in either of the following situations:
+         *
+         * 1. The statement is a lexical declaration.
+         * 2. Without the braces, an `if` within the statement would become associated with an `else` after the closing brace:
+         *
+         *     if (a) {
+         *         if (b)
+         *             foo();
+         *     }
+         *     else
+         *         bar();
+         *
+         *     if (a)
+         *         while (b)
+         *             while (c) {
+         *                 while (d)
+         *                     if (e)
+         *                         while(f)
+         *                             foo();
+         *            }
+         *     else
+         *         bar();
+         * @param {ASTNode} node `BlockStatement` body with exactly one statement directly inside. The statement can have its own nested statements.
+         * @returns {boolean} `true` if the braces are necessary - removing them (replacing the given `BlockStatement` body with its single statement content)
+         * would change the semantics of the code or produce a syntax error.
+         */
+        function areBracesNecessary(node) {
+            const statement = node.body[0];
+
+            return isLexicalDeclaration(statement) ||
+                hasUnsafeIf(statement) && isFollowedByElseKeyword(node);
+        }
+
+        /**
+         * Prepares to check the body of a node to see if it's a block statement.
+         * @param {ASTNode} node The node to report if there's a problem.
+         * @param {ASTNode} body The body node to check for blocks.
+         * @param {string} name The name to report if there's a problem.
+         * @param {{ condition: boolean }} opts Options to pass to the report functions
+         * @returns {Object} a prepared check object, with "actual", "expected", "check" properties.
+         *   "actual" will be `true` or `false` whether the body is already a block statement.
+         *   "expected" will be `true` or `false` if the body should be a block statement or not, or
+         *   `null` if it doesn't matter, depending on the rule options. It can be modified to change
+         *   the final behavior of "check".
+         *   "check" will be a function reporting appropriate problems depending on the other
+         *   properties.
+         */
+        function prepareCheck(node, body, name, opts) {
+            const hasBlock = (body.type === "BlockStatement");
+            let expected = null;
+
+            if (hasBlock && (body.body.length !== 1 || areBracesNecessary(body))) {
+                expected = true;
+            } else if (multiOnly) {
+                expected = false;
+            } else if (multiLine) {
+                if (!isCollapsedOneLiner(body)) {
+                    expected = true;
+                }
+
+                // otherwise, the body is allowed to have braces or not to have braces
+
+            } else if (multiOrNest) {
+                if (hasBlock) {
+                    const statement = body.body[0];
+                    const leadingCommentsInBlock = sourceCode.getCommentsBefore(statement);
+
+                    expected = !isOneLiner(statement) || leadingCommentsInBlock.length > 0;
+                } else {
+                    expected = !isOneLiner(body);
+                }
+            } else {
+
+                // default "all"
+                expected = true;
+            }
+
+            return {
+                actual: hasBlock,
+                expected,
+                check() {
+                    if (this.expected !== null && this.expected !== this.actual) {
+                        if (this.expected) {
+                            context.report({
+                                node,
+                                loc: body.loc,
+                                messageId: opts && opts.condition ? "missingCurlyAfterCondition" : "missingCurlyAfter",
+                                data: {
+                                    name
+                                },
+                                fix: fixer => fixer.replaceText(body, `{${sourceCode.getText(body)}}`)
+                            });
+                        } else {
+                            context.report({
+                                node,
+                                loc: body.loc,
+                                messageId: opts && opts.condition ? "unexpectedCurlyAfterCondition" : "unexpectedCurlyAfter",
+                                data: {
+                                    name
+                                },
+                                fix(fixer) {
+
+                                    /*
+                                     * `do while` expressions sometimes need a space to be inserted after `do`.
+                                     * e.g. `do{foo()} while (bar)` should be corrected to `do foo() while (bar)`
+                                     */
+                                    const needsPrecedingSpace = node.type === "DoWhileStatement" &&
+                                        sourceCode.getTokenBefore(body).range[1] === body.range[0] &&
+                                        !astUtils.canTokensBeAdjacent("do", sourceCode.getFirstToken(body, { skip: 1 }));
+
+                                    const openingBracket = sourceCode.getFirstToken(body);
+                                    const closingBracket = sourceCode.getLastToken(body);
+                                    const lastTokenInBlock = sourceCode.getTokenBefore(closingBracket);
+
+                                    if (needsSemicolon(closingBracket)) {
+
+                                        /*
+                                         * If removing braces would cause a SyntaxError due to multiple statements on the same line (or
+                                         * change the semantics of the code due to ASI), don't perform a fix.
+                                         */
+                                        return null;
+                                    }
+
+                                    const resultingBodyText = sourceCode.getText().slice(openingBracket.range[1], lastTokenInBlock.range[0]) +
+                                        sourceCode.getText(lastTokenInBlock) +
+                                        sourceCode.getText().slice(lastTokenInBlock.range[1], closingBracket.range[0]);
+
+                                    return fixer.replaceText(body, (needsPrecedingSpace ? " " : "") + resultingBodyText);
+                                }
+                            });
+                        }
+                    }
+                }
+            };
+        }
+
+        /**
+         * Prepares to check the bodies of a "if", "else if" and "else" chain.
+         * @param {ASTNode} node The first IfStatement node of the chain.
+         * @returns {Object[]} prepared checks for each body of the chain. See `prepareCheck` for more
+         *   information.
+         */
+        function prepareIfChecks(node) {
+            const preparedChecks = [];
+
+            for (let currentNode = node; currentNode; currentNode = currentNode.alternate) {
+                preparedChecks.push(prepareCheck(currentNode, currentNode.consequent, "if", { condition: true }));
+                if (currentNode.alternate && currentNode.alternate.type !== "IfStatement") {
+                    preparedChecks.push(prepareCheck(currentNode, currentNode.alternate, "else"));
+                    break;
+                }
+            }
+
+            if (consistent) {
+
+                /*
+                 * If any node should have or already have braces, make sure they
+                 * all have braces.
+                 * If all nodes shouldn't have braces, make sure they don't.
+                 */
+                const expected = preparedChecks.some(preparedCheck => {
+                    if (preparedCheck.expected !== null) {
+                        return preparedCheck.expected;
+                    }
+                    return preparedCheck.actual;
+                });
+
+                preparedChecks.forEach(preparedCheck => {
+                    preparedCheck.expected = expected;
+                });
+            }
+
+            return preparedChecks;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            IfStatement(node) {
+                const parent = node.parent;
+                const isElseIf = parent.type === "IfStatement" && parent.alternate === node;
+
+                if (!isElseIf) {
+
+                    // This is a top `if`, check the whole `if-else-if` chain
+                    prepareIfChecks(node).forEach(preparedCheck => {
+                        preparedCheck.check();
+                    });
+                }
+
+                // Skip `else if`, it's already checked (when the top `if` was visited)
+            },
+
+            WhileStatement(node) {
+                prepareCheck(node, node.body, "while", { condition: true }).check();
+            },
+
+            DoWhileStatement(node) {
+                prepareCheck(node, node.body, "do").check();
+            },
+
+            ForStatement(node) {
+                prepareCheck(node, node.body, "for", { condition: true }).check();
+            },
+
+            ForInStatement(node) {
+                prepareCheck(node, node.body, "for-in").check();
+            },
+
+            ForOfStatement(node) {
+                prepareCheck(node, node.body, "for-of").check();
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/default-case-last.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/default-case-last.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/default-case-last.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,44 @@
+/**
+ * @fileoverview Rule to enforce default clauses in switch statements to be last
+ * @author Milos Djermanovic
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce default clauses in switch statements to be last",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/default-case-last"
+        },
+
+        schema: [],
+
+        messages: {
+            notLast: "Default clause should be the last clause."
+        }
+    },
+
+    create(context) {
+        return {
+            SwitchStatement(node) {
+                const cases = node.cases,
+                    indexOfDefault = cases.findIndex(c => c.test === null);
+
+                if (indexOfDefault !== -1 && indexOfDefault !== cases.length - 1) {
+                    const defaultClause = cases[indexOfDefault];
+
+                    context.report({ node: defaultClause, messageId: "notLast" });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/default-case.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/default-case.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/default-case.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,97 @@
+/**
+ * @fileoverview require default case in switch statements
+ * @author Aliaksei Shytkin
+ */
+"use strict";
+
+const DEFAULT_COMMENT_PATTERN = /^no default$/iu;
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require `default` cases in `switch` statements",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/default-case"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                commentPattern: {
+                    type: "string"
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            missingDefaultCase: "Expected a default case."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const commentPattern = options.commentPattern
+            ? new RegExp(options.commentPattern, "u")
+            : DEFAULT_COMMENT_PATTERN;
+
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Shortcut to get last element of array
+         * @param {*[]} collection Array
+         * @returns {any} Last element
+         */
+        function last(collection) {
+            return collection[collection.length - 1];
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+
+            SwitchStatement(node) {
+
+                if (!node.cases.length) {
+
+                    /*
+                     * skip check of empty switch because there is no easy way
+                     * to extract comments inside it now
+                     */
+                    return;
+                }
+
+                const hasDefault = node.cases.some(v => v.test === null);
+
+                if (!hasDefault) {
+
+                    let comment;
+
+                    const lastCase = last(node.cases);
+                    const comments = sourceCode.getCommentsAfter(lastCase);
+
+                    if (comments.length) {
+                        comment = last(comments);
+                    }
+
+                    if (!comment || !commentPattern.test(comment.value.trim())) {
+                        context.report({ node, messageId: "missingDefaultCase" });
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/default-param-last.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/default-param-last.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/default-param-last.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,62 @@
+/**
+ * @fileoverview enforce default parameters to be last
+ * @author Chiawen Chen
+ */
+
+"use strict";
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce default parameters to be last",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/default-param-last"
+        },
+
+        schema: [],
+
+        messages: {
+            shouldBeLast: "Default parameters should be last."
+        }
+    },
+
+    create(context) {
+
+        /**
+         * Handler for function contexts.
+         * @param {ASTNode} node function node
+         * @returns {void}
+         */
+        function handleFunction(node) {
+            let hasSeenPlainParam = false;
+
+            for (let i = node.params.length - 1; i >= 0; i -= 1) {
+                const param = node.params[i];
+
+                if (
+                    param.type !== "AssignmentPattern" &&
+                    param.type !== "RestElement"
+                ) {
+                    hasSeenPlainParam = true;
+                    continue;
+                }
+
+                if (hasSeenPlainParam && param.type === "AssignmentPattern") {
+                    context.report({
+                        node: param,
+                        messageId: "shouldBeLast"
+                    });
+                }
+            }
+        }
+
+        return {
+            FunctionDeclaration: handleFunction,
+            FunctionExpression: handleFunction,
+            ArrowFunctionExpression: handleFunction
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/dot-location.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/dot-location.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/dot-location.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,108 @@
+/**
+ * @fileoverview Validates newlines before and after dots
+ * @author Greg Cochard
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent newlines before and after dots",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/dot-location"
+        },
+
+        schema: [
+            {
+                enum: ["object", "property"]
+            }
+        ],
+
+        fixable: "code",
+
+        messages: {
+            expectedDotAfterObject: "Expected dot to be on same line as object.",
+            expectedDotBeforeProperty: "Expected dot to be on same line as property."
+        }
+    },
+
+    create(context) {
+
+        const config = context.options[0];
+
+        // default to onObject if no preference is passed
+        const onObject = config === "object" || !config;
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Reports if the dot between object and property is on the correct location.
+         * @param {ASTNode} node The `MemberExpression` node.
+         * @returns {void}
+         */
+        function checkDotLocation(node) {
+            const property = node.property;
+            const dotToken = sourceCode.getTokenBefore(property);
+
+            if (onObject) {
+
+                // `obj` expression can be parenthesized, but those paren tokens are not a part of the `obj` node.
+                const tokenBeforeDot = sourceCode.getTokenBefore(dotToken);
+
+                if (!astUtils.isTokenOnSameLine(tokenBeforeDot, dotToken)) {
+                    context.report({
+                        node,
+                        loc: dotToken.loc,
+                        messageId: "expectedDotAfterObject",
+                        *fix(fixer) {
+                            if (dotToken.value.startsWith(".") && astUtils.isDecimalIntegerNumericToken(tokenBeforeDot)) {
+                                yield fixer.insertTextAfter(tokenBeforeDot, ` ${dotToken.value}`);
+                            } else {
+                                yield fixer.insertTextAfter(tokenBeforeDot, dotToken.value);
+                            }
+                            yield fixer.remove(dotToken);
+                        }
+                    });
+                }
+            } else if (!astUtils.isTokenOnSameLine(dotToken, property)) {
+                context.report({
+                    node,
+                    loc: dotToken.loc,
+                    messageId: "expectedDotBeforeProperty",
+                    *fix(fixer) {
+                        yield fixer.remove(dotToken);
+                        yield fixer.insertTextBefore(property, dotToken.value);
+                    }
+                });
+            }
+        }
+
+        /**
+         * Checks the spacing of the dot within a member expression.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         */
+        function checkNode(node) {
+            if (!node.computed) {
+                checkDotLocation(node);
+            }
+        }
+
+        return {
+            MemberExpression: checkNode
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/dot-notation.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/dot-notation.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/dot-notation.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,176 @@
+/**
+ * @fileoverview Rule to warn about using dot notation instead of square bracket notation when possible.
+ * @author Josh Perez
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const keywords = require("./utils/keywords");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const validIdentifier = /^[a-zA-Z_$][a-zA-Z0-9_$]*$/u;
+
+// `null` literal must be handled separately.
+const literalTypesToCheck = new Set(["string", "boolean"]);
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce dot notation whenever possible",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/dot-notation"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowKeywords: {
+                        type: "boolean",
+                        default: true
+                    },
+                    allowPattern: {
+                        type: "string",
+                        default: ""
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "code",
+
+        messages: {
+            useDot: "[{{key}}] is better written in dot notation.",
+            useBrackets: ".{{key}} is a syntax error."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const allowKeywords = options.allowKeywords === void 0 || options.allowKeywords;
+        const sourceCode = context.sourceCode;
+
+        let allowPattern;
+
+        if (options.allowPattern) {
+            allowPattern = new RegExp(options.allowPattern, "u");
+        }
+
+        /**
+         * Check if the property is valid dot notation
+         * @param {ASTNode} node The dot notation node
+         * @param {string} value Value which is to be checked
+         * @returns {void}
+         */
+        function checkComputedProperty(node, value) {
+            if (
+                validIdentifier.test(value) &&
+                (allowKeywords || !keywords.includes(String(value))) &&
+                !(allowPattern && allowPattern.test(value))
+            ) {
+                const formattedValue = node.property.type === "Literal" ? JSON.stringify(value) : `\`${value}\``;
+
+                context.report({
+                    node: node.property,
+                    messageId: "useDot",
+                    data: {
+                        key: formattedValue
+                    },
+                    *fix(fixer) {
+                        const leftBracket = sourceCode.getTokenAfter(node.object, astUtils.isOpeningBracketToken);
+                        const rightBracket = sourceCode.getLastToken(node);
+                        const nextToken = sourceCode.getTokenAfter(node);
+
+                        // Don't perform any fixes if there are comments inside the brackets.
+                        if (sourceCode.commentsExistBetween(leftBracket, rightBracket)) {
+                            return;
+                        }
+
+                        // Replace the brackets by an identifier.
+                        if (!node.optional) {
+                            yield fixer.insertTextBefore(
+                                leftBracket,
+                                astUtils.isDecimalInteger(node.object) ? " ." : "."
+                            );
+                        }
+                        yield fixer.replaceTextRange(
+                            [leftBracket.range[0], rightBracket.range[1]],
+                            value
+                        );
+
+                        // Insert a space after the property if it will be connected to the next token.
+                        if (
+                            nextToken &&
+                            rightBracket.range[1] === nextToken.range[0] &&
+                            !astUtils.canTokensBeAdjacent(String(value), nextToken)
+                        ) {
+                            yield fixer.insertTextAfter(node, " ");
+                        }
+                    }
+                });
+            }
+        }
+
+        return {
+            MemberExpression(node) {
+                if (
+                    node.computed &&
+                    node.property.type === "Literal" &&
+                    (literalTypesToCheck.has(typeof node.property.value) || astUtils.isNullLiteral(node.property))
+                ) {
+                    checkComputedProperty(node, node.property.value);
+                }
+                if (
+                    node.computed &&
+                    astUtils.isStaticTemplateLiteral(node.property)
+                ) {
+                    checkComputedProperty(node, node.property.quasis[0].value.cooked);
+                }
+                if (
+                    !allowKeywords &&
+                    !node.computed &&
+                    node.property.type === "Identifier" &&
+                    keywords.includes(String(node.property.name))
+                ) {
+                    context.report({
+                        node: node.property,
+                        messageId: "useBrackets",
+                        data: {
+                            key: node.property.name
+                        },
+                        *fix(fixer) {
+                            const dotToken = sourceCode.getTokenBefore(node.property);
+
+                            // A statement that starts with `let[` is parsed as a destructuring variable declaration, not a MemberExpression.
+                            if (node.object.type === "Identifier" && node.object.name === "let" && !node.optional) {
+                                return;
+                            }
+
+                            // Don't perform any fixes if there are comments between the dot and the property name.
+                            if (sourceCode.commentsExistBetween(dotToken, node.property)) {
+                                return;
+                            }
+
+                            // Replace the identifier to brackets.
+                            if (!node.optional) {
+                                yield fixer.remove(dotToken);
+                            }
+                            yield fixer.replaceText(node.property, `["${node.property.name}"]`);
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/eol-last.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/eol-last.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/eol-last.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,115 @@
+/**
+ * @fileoverview Require or disallow newline at the end of files
+ * @author Nodeca Team <https://github.com/nodeca>
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require or disallow newline at the end of files",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/eol-last"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never", "unix", "windows"]
+            }
+        ],
+
+        messages: {
+            missing: "Newline required at end of file but not found.",
+            unexpected: "Newline not allowed at end of file."
+        }
+    },
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: function checkBadEOF(node) {
+                const sourceCode = context.sourceCode,
+                    src = sourceCode.getText(),
+                    lastLine = sourceCode.lines[sourceCode.lines.length - 1],
+                    location = {
+                        column: lastLine.length,
+                        line: sourceCode.lines.length
+                    },
+                    LF = "\n",
+                    CRLF = `\r${LF}`,
+                    endsWithNewline = src.endsWith(LF);
+
+                /*
+                 * Empty source is always valid: No content in file so we don't
+                 * need to lint for a newline on the last line of content.
+                 */
+                if (!src.length) {
+                    return;
+                }
+
+                let mode = context.options[0] || "always",
+                    appendCRLF = false;
+
+                if (mode === "unix") {
+
+                    // `"unix"` should behave exactly as `"always"`
+                    mode = "always";
+                }
+                if (mode === "windows") {
+
+                    // `"windows"` should behave exactly as `"always"`, but append CRLF in the fixer for backwards compatibility
+                    mode = "always";
+                    appendCRLF = true;
+                }
+                if (mode === "always" && !endsWithNewline) {
+
+                    // File is not newline-terminated, but should be
+                    context.report({
+                        node,
+                        loc: location,
+                        messageId: "missing",
+                        fix(fixer) {
+                            return fixer.insertTextAfterRange([0, src.length], appendCRLF ? CRLF : LF);
+                        }
+                    });
+                } else if (mode === "never" && endsWithNewline) {
+
+                    const secondLastLine = sourceCode.lines[sourceCode.lines.length - 2];
+
+                    // File is newline-terminated, but shouldn't be
+                    context.report({
+                        node,
+                        loc: {
+                            start: { line: sourceCode.lines.length - 1, column: secondLastLine.length },
+                            end: { line: sourceCode.lines.length, column: 0 }
+                        },
+                        messageId: "unexpected",
+                        fix(fixer) {
+                            const finalEOLs = /(?:\r?\n)+$/u,
+                                match = finalEOLs.exec(sourceCode.text),
+                                start = match.index,
+                                end = sourceCode.text.length;
+
+                            return fixer.replaceTextRange([start, end], "");
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/eqeqeq.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/eqeqeq.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/eqeqeq.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,174 @@
+/**
+ * @fileoverview Rule to flag statements that use != and == instead of !== and ===
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require the use of `===` and `!==`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/eqeqeq"
+        },
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                null: {
+                                    enum: ["always", "never", "ignore"]
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    additionalItems: false
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["smart", "allow-null"]
+                        }
+                    ],
+                    additionalItems: false
+                }
+            ]
+        },
+
+        fixable: "code",
+
+        messages: {
+            unexpected: "Expected '{{expectedOperator}}' and instead saw '{{actualOperator}}'."
+        }
+    },
+
+    create(context) {
+        const config = context.options[0] || "always";
+        const options = context.options[1] || {};
+        const sourceCode = context.sourceCode;
+
+        const nullOption = (config === "always")
+            ? options.null || "always"
+            : "ignore";
+        const enforceRuleForNull = (nullOption === "always");
+        const enforceInverseRuleForNull = (nullOption === "never");
+
+        /**
+         * Checks if an expression is a typeof expression
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} if the node is a typeof expression
+         */
+        function isTypeOf(node) {
+            return node.type === "UnaryExpression" && node.operator === "typeof";
+        }
+
+        /**
+         * Checks if either operand of a binary expression is a typeof operation
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} if one of the operands is typeof
+         * @private
+         */
+        function isTypeOfBinary(node) {
+            return isTypeOf(node.left) || isTypeOf(node.right);
+        }
+
+        /**
+         * Checks if operands are literals of the same type (via typeof)
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} if operands are of same type
+         * @private
+         */
+        function areLiteralsAndSameType(node) {
+            return node.left.type === "Literal" && node.right.type === "Literal" &&
+                    typeof node.left.value === typeof node.right.value;
+        }
+
+        /**
+         * Checks if one of the operands is a literal null
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} if operands are null
+         * @private
+         */
+        function isNullCheck(node) {
+            return astUtils.isNullLiteral(node.right) || astUtils.isNullLiteral(node.left);
+        }
+
+        /**
+         * Reports a message for this rule.
+         * @param {ASTNode} node The binary expression node that was checked
+         * @param {string} expectedOperator The operator that was expected (either '==', '!=', '===', or '!==')
+         * @returns {void}
+         * @private
+         */
+        function report(node, expectedOperator) {
+            const operatorToken = sourceCode.getFirstTokenBetween(
+                node.left,
+                node.right,
+                token => token.value === node.operator
+            );
+
+            context.report({
+                node,
+                loc: operatorToken.loc,
+                messageId: "unexpected",
+                data: { expectedOperator, actualOperator: node.operator },
+                fix(fixer) {
+
+                    // If the comparison is a `typeof` comparison or both sides are literals with the same type, then it's safe to fix.
+                    if (isTypeOfBinary(node) || areLiteralsAndSameType(node)) {
+                        return fixer.replaceText(operatorToken, expectedOperator);
+                    }
+                    return null;
+                }
+            });
+        }
+
+        return {
+            BinaryExpression(node) {
+                const isNull = isNullCheck(node);
+
+                if (node.operator !== "==" && node.operator !== "!=") {
+                    if (enforceInverseRuleForNull && isNull) {
+                        report(node, node.operator.slice(0, -1));
+                    }
+                    return;
+                }
+
+                if (config === "smart" && (isTypeOfBinary(node) ||
+                        areLiteralsAndSameType(node) || isNull)) {
+                    return;
+                }
+
+                if (!enforceRuleForNull && isNull) {
+                    return;
+                }
+
+                report(node, `${node.operator}=`);
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/for-direction.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/for-direction.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/for-direction.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,140 @@
+/**
+ * @fileoverview enforce "for" loop update clause moving the counter in the right direction.(for-direction)
+ * @author Aladdin-ADD<hh_2013@foxmail.com>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { getStaticValue } = require("@eslint-community/eslint-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Enforce \"for\" loop update clause moving the counter in the right direction",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/for-direction"
+        },
+
+        fixable: null,
+        schema: [],
+
+        messages: {
+            incorrectDirection: "The update clause in this loop moves the variable in the wrong direction."
+        }
+    },
+
+    create(context) {
+        const { sourceCode } = context;
+
+        /**
+         * report an error.
+         * @param {ASTNode} node the node to report.
+         * @returns {void}
+         */
+        function report(node) {
+            context.report({
+                node,
+                messageId: "incorrectDirection"
+            });
+        }
+
+        /**
+         * check the right side of the assignment
+         * @param {ASTNode} update UpdateExpression to check
+         * @param {int} dir expected direction that could either be turned around or invalidated
+         * @returns {int} return dir, the negated dir, or zero if the counter does not change or the direction is not clear
+         */
+        function getRightDirection(update, dir) {
+            const staticValue = getStaticValue(update.right, sourceCode.getScope(update));
+
+            if (staticValue && ["bigint", "boolean", "number"].includes(typeof staticValue.value)) {
+                const sign = Math.sign(Number(staticValue.value)) || 0; // convert NaN to 0
+
+                return dir * sign;
+            }
+            return 0;
+        }
+
+        /**
+         * check UpdateExpression add/sub the counter
+         * @param {ASTNode} update UpdateExpression to check
+         * @param {string} counter variable name to check
+         * @returns {int} if add return 1, if sub return -1, if nochange, return 0
+         */
+        function getUpdateDirection(update, counter) {
+            if (update.argument.type === "Identifier" && update.argument.name === counter) {
+                if (update.operator === "++") {
+                    return 1;
+                }
+                if (update.operator === "--") {
+                    return -1;
+                }
+            }
+            return 0;
+        }
+
+        /**
+         * check AssignmentExpression add/sub the counter
+         * @param {ASTNode} update AssignmentExpression to check
+         * @param {string} counter variable name to check
+         * @returns {int} if add return 1, if sub return -1, if nochange, return 0
+         */
+        function getAssignmentDirection(update, counter) {
+            if (update.left.name === counter) {
+                if (update.operator === "+=") {
+                    return getRightDirection(update, 1);
+                }
+                if (update.operator === "-=") {
+                    return getRightDirection(update, -1);
+                }
+            }
+            return 0;
+        }
+
+        return {
+            ForStatement(node) {
+
+                if (node.test && node.test.type === "BinaryExpression" && node.update) {
+                    for (const counterPosition of ["left", "right"]) {
+                        if (node.test[counterPosition].type !== "Identifier") {
+                            continue;
+                        }
+
+                        const counter = node.test[counterPosition].name;
+                        const operator = node.test.operator;
+                        const update = node.update;
+
+                        let wrongDirection;
+
+                        if (operator === "<" || operator === "<=") {
+                            wrongDirection = counterPosition === "left" ? -1 : 1;
+                        } else if (operator === ">" || operator === ">=") {
+                            wrongDirection = counterPosition === "left" ? 1 : -1;
+                        } else {
+                            return;
+                        }
+
+                        if (update.type === "UpdateExpression") {
+                            if (getUpdateDirection(update, counter) === wrongDirection) {
+                                report(node);
+                            }
+                        } else if (update.type === "AssignmentExpression" && getAssignmentDirection(update, counter) === wrongDirection) {
+                            report(node);
+                        }
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/func-call-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/func-call-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/func-call-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,233 @@
+/**
+ * @fileoverview Rule to control spacing within function calls
+ * @author Matt DuVall <http://www.mattduvall.com>
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require or disallow spacing between function identifiers and their invocations",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/func-call-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["never"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                allowNewlines: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        },
+
+        messages: {
+            unexpectedWhitespace: "Unexpected whitespace between function name and paren.",
+            unexpectedNewline: "Unexpected newline between function name and paren.",
+            missing: "Missing space between function name and paren."
+        }
+    },
+
+    create(context) {
+
+        const never = context.options[0] !== "always";
+        const allowNewlines = !never && context.options[1] && context.options[1].allowNewlines;
+        const sourceCode = context.sourceCode;
+        const text = sourceCode.getText();
+
+        /**
+         * Check if open space is present in a function name
+         * @param {ASTNode} node node to evaluate
+         * @param {Token} leftToken The last token of the callee. This may be the closing parenthesis that encloses the callee.
+         * @param {Token} rightToken Tha first token of the arguments. this is the opening parenthesis that encloses the arguments.
+         * @returns {void}
+         * @private
+         */
+        function checkSpacing(node, leftToken, rightToken) {
+            const textBetweenTokens = text.slice(leftToken.range[1], rightToken.range[0]).replace(/\/\*.*?\*\//gu, "");
+            const hasWhitespace = /\s/u.test(textBetweenTokens);
+            const hasNewline = hasWhitespace && astUtils.LINEBREAK_MATCHER.test(textBetweenTokens);
+
+            /*
+             * never allowNewlines hasWhitespace hasNewline message
+             * F     F             F             F          Missing space between function name and paren.
+             * F     F             F             T          (Invalid `!hasWhitespace && hasNewline`)
+             * F     F             T             T          Unexpected newline between function name and paren.
+             * F     F             T             F          (OK)
+             * F     T             T             F          (OK)
+             * F     T             T             T          (OK)
+             * F     T             F             T          (Invalid `!hasWhitespace && hasNewline`)
+             * F     T             F             F          Missing space between function name and paren.
+             * T     T             F             F          (Invalid `never && allowNewlines`)
+             * T     T             F             T          (Invalid `!hasWhitespace && hasNewline`)
+             * T     T             T             T          (Invalid `never && allowNewlines`)
+             * T     T             T             F          (Invalid `never && allowNewlines`)
+             * T     F             T             F          Unexpected space between function name and paren.
+             * T     F             T             T          Unexpected space between function name and paren.
+             * T     F             F             T          (Invalid `!hasWhitespace && hasNewline`)
+             * T     F             F             F          (OK)
+             *
+             * T                   T                        Unexpected space between function name and paren.
+             * F                   F                        Missing space between function name and paren.
+             * F     F                           T          Unexpected newline between function name and paren.
+             */
+
+            if (never && hasWhitespace) {
+                context.report({
+                    node,
+                    loc: {
+                        start: leftToken.loc.end,
+                        end: {
+                            line: rightToken.loc.start.line,
+                            column: rightToken.loc.start.column - 1
+                        }
+                    },
+                    messageId: "unexpectedWhitespace",
+                    fix(fixer) {
+
+                        // Don't remove comments.
+                        if (sourceCode.commentsExistBetween(leftToken, rightToken)) {
+                            return null;
+                        }
+
+                        // If `?.` exists, it doesn't hide no-unexpected-multiline errors
+                        if (node.optional) {
+                            return fixer.replaceTextRange([leftToken.range[1], rightToken.range[0]], "?.");
+                        }
+
+                        /*
+                         * Only autofix if there is no newline
+                         * https://github.com/eslint/eslint/issues/7787
+                         */
+                        if (hasNewline) {
+                            return null;
+                        }
+                        return fixer.removeRange([leftToken.range[1], rightToken.range[0]]);
+                    }
+                });
+            } else if (!never && !hasWhitespace) {
+                context.report({
+                    node,
+                    loc: {
+                        start: {
+                            line: leftToken.loc.end.line,
+                            column: leftToken.loc.end.column - 1
+                        },
+                        end: rightToken.loc.start
+                    },
+                    messageId: "missing",
+                    fix(fixer) {
+                        if (node.optional) {
+                            return null; // Not sure if inserting a space to either before/after `?.` token.
+                        }
+                        return fixer.insertTextBefore(rightToken, " ");
+                    }
+                });
+            } else if (!never && !allowNewlines && hasNewline) {
+                context.report({
+                    node,
+                    loc: {
+                        start: leftToken.loc.end,
+                        end: rightToken.loc.start
+                    },
+                    messageId: "unexpectedNewline",
+                    fix(fixer) {
+
+                        /*
+                         * Only autofix if there is no newline
+                         * https://github.com/eslint/eslint/issues/7787
+                         * But if `?.` exists, it doesn't hide no-unexpected-multiline errors
+                         */
+                        if (!node.optional) {
+                            return null;
+                        }
+
+                        // Don't remove comments.
+                        if (sourceCode.commentsExistBetween(leftToken, rightToken)) {
+                            return null;
+                        }
+
+                        const range = [leftToken.range[1], rightToken.range[0]];
+                        const qdToken = sourceCode.getTokenAfter(leftToken);
+
+                        if (qdToken.range[0] === leftToken.range[1]) {
+                            return fixer.replaceTextRange(range, "?. ");
+                        }
+                        if (qdToken.range[1] === rightToken.range[0]) {
+                            return fixer.replaceTextRange(range, " ?.");
+                        }
+                        return fixer.replaceTextRange(range, " ?. ");
+                    }
+                });
+            }
+        }
+
+        return {
+            "CallExpression, NewExpression"(node) {
+                const lastToken = sourceCode.getLastToken(node);
+                const lastCalleeToken = sourceCode.getLastToken(node.callee);
+                const parenToken = sourceCode.getFirstTokenBetween(lastCalleeToken, lastToken, astUtils.isOpeningParenToken);
+                const prevToken = parenToken && sourceCode.getTokenBefore(parenToken, astUtils.isNotQuestionDotToken);
+
+                // Parens in NewExpression are optional
+                if (!(parenToken && parenToken.range[1] < node.range[1])) {
+                    return;
+                }
+
+                checkSpacing(node, prevToken, parenToken);
+            },
+
+            ImportExpression(node) {
+                const leftToken = sourceCode.getFirstToken(node);
+                const rightToken = sourceCode.getTokenAfter(leftToken);
+
+                checkSpacing(node, leftToken, rightToken);
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/func-name-matching.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/func-name-matching.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/func-name-matching.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,253 @@
+/**
+ * @fileoverview Rule to require function names to match the name of the variable or property to which they are assigned.
+ * @author Annie Zhang, Pavel Strashkin
+ */
+
+"use strict";
+
+//--------------------------------------------------------------------------
+// Requirements
+//--------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const esutils = require("esutils");
+
+//--------------------------------------------------------------------------
+// Helpers
+//--------------------------------------------------------------------------
+
+/**
+ * Determines if a pattern is `module.exports` or `module["exports"]`
+ * @param {ASTNode} pattern The left side of the AssignmentExpression
+ * @returns {boolean} True if the pattern is `module.exports` or `module["exports"]`
+ */
+function isModuleExports(pattern) {
+    if (pattern.type === "MemberExpression" && pattern.object.type === "Identifier" && pattern.object.name === "module") {
+
+        // module.exports
+        if (pattern.property.type === "Identifier" && pattern.property.name === "exports") {
+            return true;
+        }
+
+        // module["exports"]
+        if (pattern.property.type === "Literal" && pattern.property.value === "exports") {
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * Determines if a string name is a valid identifier
+ * @param {string} name The string to be checked
+ * @param {int} ecmaVersion The ECMAScript version if specified in the parserOptions config
+ * @returns {boolean} True if the string is a valid identifier
+ */
+function isIdentifier(name, ecmaVersion) {
+    if (ecmaVersion >= 2015) {
+        return esutils.keyword.isIdentifierES6(name);
+    }
+    return esutils.keyword.isIdentifierES5(name);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const alwaysOrNever = { enum: ["always", "never"] };
+const optionsObject = {
+    type: "object",
+    properties: {
+        considerPropertyDescriptor: {
+            type: "boolean"
+        },
+        includeCommonJSModuleExports: {
+            type: "boolean"
+        }
+    },
+    additionalProperties: false
+};
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require function names to match the name of the variable or property to which they are assigned",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/func-name-matching"
+        },
+
+        schema: {
+            anyOf: [{
+                type: "array",
+                additionalItems: false,
+                items: [alwaysOrNever, optionsObject]
+            }, {
+                type: "array",
+                additionalItems: false,
+                items: [optionsObject]
+            }]
+        },
+
+        messages: {
+            matchProperty: "Function name `{{funcName}}` should match property name `{{name}}`.",
+            matchVariable: "Function name `{{funcName}}` should match variable name `{{name}}`.",
+            notMatchProperty: "Function name `{{funcName}}` should not match property name `{{name}}`.",
+            notMatchVariable: "Function name `{{funcName}}` should not match variable name `{{name}}`."
+        }
+    },
+
+    create(context) {
+        const options = (typeof context.options[0] === "object" ? context.options[0] : context.options[1]) || {};
+        const nameMatches = typeof context.options[0] === "string" ? context.options[0] : "always";
+        const considerPropertyDescriptor = options.considerPropertyDescriptor;
+        const includeModuleExports = options.includeCommonJSModuleExports;
+        const ecmaVersion = context.languageOptions.ecmaVersion;
+
+        /**
+         * Check whether node is a certain CallExpression.
+         * @param {string} objName object name
+         * @param {string} funcName function name
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} `true` if node matches CallExpression
+         */
+        function isPropertyCall(objName, funcName, node) {
+            if (!node) {
+                return false;
+            }
+            return node.type === "CallExpression" && astUtils.isSpecificMemberAccess(node.callee, objName, funcName);
+        }
+
+        /**
+         * Compares identifiers based on the nameMatches option
+         * @param {string} x the first identifier
+         * @param {string} y the second identifier
+         * @returns {boolean} whether the two identifiers should warn.
+         */
+        function shouldWarn(x, y) {
+            return (nameMatches === "always" && x !== y) || (nameMatches === "never" && x === y);
+        }
+
+        /**
+         * Reports
+         * @param {ASTNode} node The node to report
+         * @param {string} name The variable or property name
+         * @param {string} funcName The function name
+         * @param {boolean} isProp True if the reported node is a property assignment
+         * @returns {void}
+         */
+        function report(node, name, funcName, isProp) {
+            let messageId;
+
+            if (nameMatches === "always" && isProp) {
+                messageId = "matchProperty";
+            } else if (nameMatches === "always") {
+                messageId = "matchVariable";
+            } else if (isProp) {
+                messageId = "notMatchProperty";
+            } else {
+                messageId = "notMatchVariable";
+            }
+            context.report({
+                node,
+                messageId,
+                data: {
+                    name,
+                    funcName
+                }
+            });
+        }
+
+        /**
+         * Determines whether a given node is a string literal
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} `true` if the node is a string literal
+         */
+        function isStringLiteral(node) {
+            return node.type === "Literal" && typeof node.value === "string";
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            VariableDeclarator(node) {
+                if (!node.init || node.init.type !== "FunctionExpression" || node.id.type !== "Identifier") {
+                    return;
+                }
+                if (node.init.id && shouldWarn(node.id.name, node.init.id.name)) {
+                    report(node, node.id.name, node.init.id.name, false);
+                }
+            },
+
+            AssignmentExpression(node) {
+                if (
+                    node.right.type !== "FunctionExpression" ||
+                    (node.left.computed && node.left.property.type !== "Literal") ||
+                    (!includeModuleExports && isModuleExports(node.left)) ||
+                    (node.left.type !== "Identifier" && node.left.type !== "MemberExpression")
+                ) {
+                    return;
+                }
+
+                const isProp = node.left.type === "MemberExpression";
+                const name = isProp ? astUtils.getStaticPropertyName(node.left) : node.left.name;
+
+                if (node.right.id && name && isIdentifier(name) && shouldWarn(name, node.right.id.name)) {
+                    report(node, name, node.right.id.name, isProp);
+                }
+            },
+
+            "Property, PropertyDefinition[value]"(node) {
+                if (!(node.value.type === "FunctionExpression" && node.value.id)) {
+                    return;
+                }
+
+                if (node.key.type === "Identifier" && !node.computed) {
+                    const functionName = node.value.id.name;
+                    let propertyName = node.key.name;
+
+                    if (
+                        considerPropertyDescriptor &&
+                        propertyName === "value" &&
+                        node.parent.type === "ObjectExpression"
+                    ) {
+                        if (isPropertyCall("Object", "defineProperty", node.parent.parent) || isPropertyCall("Reflect", "defineProperty", node.parent.parent)) {
+                            const property = node.parent.parent.arguments[1];
+
+                            if (isStringLiteral(property) && shouldWarn(property.value, functionName)) {
+                                report(node, property.value, functionName, true);
+                            }
+                        } else if (isPropertyCall("Object", "defineProperties", node.parent.parent.parent.parent)) {
+                            propertyName = node.parent.parent.key.name;
+                            if (!node.parent.parent.computed && shouldWarn(propertyName, functionName)) {
+                                report(node, propertyName, functionName, true);
+                            }
+                        } else if (isPropertyCall("Object", "create", node.parent.parent.parent.parent)) {
+                            propertyName = node.parent.parent.key.name;
+                            if (!node.parent.parent.computed && shouldWarn(propertyName, functionName)) {
+                                report(node, propertyName, functionName, true);
+                            }
+                        } else if (shouldWarn(propertyName, functionName)) {
+                            report(node, propertyName, functionName, true);
+                        }
+                    } else if (shouldWarn(propertyName, functionName)) {
+                        report(node, propertyName, functionName, true);
+                    }
+                    return;
+                }
+
+                if (
+                    isStringLiteral(node.key) &&
+                    isIdentifier(node.key.value, ecmaVersion) &&
+                    shouldWarn(node.key.value, node.value.id.name)
+                ) {
+                    report(node, node.key.value, node.value.id.name, true);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/func-names.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/func-names.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/func-names.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,191 @@
+/**
+ * @fileoverview Rule to warn when a function expression does not have a name.
+ * @author Kyle T. Nunery
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+/**
+ * Checks whether or not a given variable is a function name.
+ * @param {eslint-scope.Variable} variable A variable to check.
+ * @returns {boolean} `true` if the variable is a function name.
+ */
+function isFunctionName(variable) {
+    return variable && variable.defs[0].type === "FunctionName";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require or disallow named `function` expressions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/func-names"
+        },
+
+        schema: {
+            definitions: {
+                value: {
+                    enum: [
+                        "always",
+                        "as-needed",
+                        "never"
+                    ]
+                }
+            },
+            items: [
+                {
+                    $ref: "#/definitions/value"
+                },
+                {
+                    type: "object",
+                    properties: {
+                        generators: {
+                            $ref: "#/definitions/value"
+                        }
+                    },
+                    additionalProperties: false
+                }
+            ]
+        },
+
+        messages: {
+            unnamed: "Unexpected unnamed {{name}}.",
+            named: "Unexpected named {{name}}."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Returns the config option for the given node.
+         * @param {ASTNode} node A node to get the config for.
+         * @returns {string} The config option.
+         */
+        function getConfigForNode(node) {
+            if (
+                node.generator &&
+                context.options.length > 1 &&
+                context.options[1].generators
+            ) {
+                return context.options[1].generators;
+            }
+
+            return context.options[0] || "always";
+        }
+
+        /**
+         * Determines whether the current FunctionExpression node is a get, set, or
+         * shorthand method in an object literal or a class.
+         * @param {ASTNode} node A node to check.
+         * @returns {boolean} True if the node is a get, set, or shorthand method.
+         */
+        function isObjectOrClassMethod(node) {
+            const parent = node.parent;
+
+            return (parent.type === "MethodDefinition" || (
+                parent.type === "Property" && (
+                    parent.method ||
+                    parent.kind === "get" ||
+                    parent.kind === "set"
+                )
+            ));
+        }
+
+        /**
+         * Determines whether the current FunctionExpression node has a name that would be
+         * inferred from context in a conforming ES6 environment.
+         * @param {ASTNode} node A node to check.
+         * @returns {boolean} True if the node would have a name assigned automatically.
+         */
+        function hasInferredName(node) {
+            const parent = node.parent;
+
+            return isObjectOrClassMethod(node) ||
+                (parent.type === "VariableDeclarator" && parent.id.type === "Identifier" && parent.init === node) ||
+                (parent.type === "Property" && parent.value === node) ||
+                (parent.type === "PropertyDefinition" && parent.value === node) ||
+                (parent.type === "AssignmentExpression" && parent.left.type === "Identifier" && parent.right === node) ||
+                (parent.type === "AssignmentPattern" && parent.left.type === "Identifier" && parent.right === node);
+        }
+
+        /**
+         * Reports that an unnamed function should be named
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @returns {void}
+         */
+        function reportUnexpectedUnnamedFunction(node) {
+            context.report({
+                node,
+                messageId: "unnamed",
+                loc: astUtils.getFunctionHeadLoc(node, sourceCode),
+                data: { name: astUtils.getFunctionNameWithKind(node) }
+            });
+        }
+
+        /**
+         * Reports that a named function should be unnamed
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @returns {void}
+         */
+        function reportUnexpectedNamedFunction(node) {
+            context.report({
+                node,
+                messageId: "named",
+                loc: astUtils.getFunctionHeadLoc(node, sourceCode),
+                data: { name: astUtils.getFunctionNameWithKind(node) }
+            });
+        }
+
+        /**
+         * The listener for function nodes.
+         * @param {ASTNode} node function node
+         * @returns {void}
+         */
+        function handleFunction(node) {
+
+            // Skip recursive functions.
+            const nameVar = sourceCode.getDeclaredVariables(node)[0];
+
+            if (isFunctionName(nameVar) && nameVar.references.length > 0) {
+                return;
+            }
+
+            const hasName = Boolean(node.id && node.id.name);
+            const config = getConfigForNode(node);
+
+            if (config === "never") {
+                if (hasName && node.type !== "FunctionDeclaration") {
+                    reportUnexpectedNamedFunction(node);
+                }
+            } else if (config === "as-needed") {
+                if (!hasName && !hasInferredName(node)) {
+                    reportUnexpectedUnnamedFunction(node);
+                }
+            } else {
+                if (!hasName && !isObjectOrClassMethod(node)) {
+                    reportUnexpectedUnnamedFunction(node);
+                }
+            }
+        }
+
+        return {
+            "FunctionExpression:exit": handleFunction,
+            "ExportDefaultDeclaration > FunctionDeclaration": handleFunction
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/func-style.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/func-style.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/func-style.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,98 @@
+/**
+ * @fileoverview Rule to enforce a particular function style
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce the consistent use of either `function` declarations or expressions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/func-style"
+        },
+
+        schema: [
+            {
+                enum: ["declaration", "expression"]
+            },
+            {
+                type: "object",
+                properties: {
+                    allowArrowFunctions: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            expression: "Expected a function expression.",
+            declaration: "Expected a function declaration."
+        }
+    },
+
+    create(context) {
+
+        const style = context.options[0],
+            allowArrowFunctions = context.options[1] && context.options[1].allowArrowFunctions,
+            enforceDeclarations = (style === "declaration"),
+            stack = [];
+
+        const nodesToCheck = {
+            FunctionDeclaration(node) {
+                stack.push(false);
+
+                if (!enforceDeclarations && node.parent.type !== "ExportDefaultDeclaration") {
+                    context.report({ node, messageId: "expression" });
+                }
+            },
+            "FunctionDeclaration:exit"() {
+                stack.pop();
+            },
+
+            FunctionExpression(node) {
+                stack.push(false);
+
+                if (enforceDeclarations && node.parent.type === "VariableDeclarator") {
+                    context.report({ node: node.parent, messageId: "declaration" });
+                }
+            },
+            "FunctionExpression:exit"() {
+                stack.pop();
+            },
+
+            ThisExpression() {
+                if (stack.length > 0) {
+                    stack[stack.length - 1] = true;
+                }
+            }
+        };
+
+        if (!allowArrowFunctions) {
+            nodesToCheck.ArrowFunctionExpression = function() {
+                stack.push(false);
+            };
+
+            nodesToCheck["ArrowFunctionExpression:exit"] = function(node) {
+                const hasThisExpr = stack.pop();
+
+                if (enforceDeclarations && !hasThisExpr && node.parent.type === "VariableDeclarator") {
+                    context.report({ node: node.parent, messageId: "declaration" });
+                }
+            };
+        }
+
+        return nodesToCheck;
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/function-call-argument-newline.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/function-call-argument-newline.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/function-call-argument-newline.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,125 @@
+/**
+ * @fileoverview Rule to enforce line breaks between arguments of a function call
+ * @author Alexey Gonchar <https://github.com/finico>
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce line breaks between arguments of a function call",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/function-call-argument-newline"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never", "consistent"]
+            }
+        ],
+
+        messages: {
+            unexpectedLineBreak: "There should be no line break here.",
+            missingLineBreak: "There should be a line break after this argument."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        const checkers = {
+            unexpected: {
+                messageId: "unexpectedLineBreak",
+                check: (prevToken, currentToken) => prevToken.loc.end.line !== currentToken.loc.start.line,
+                createFix: (token, tokenBefore) => fixer =>
+                    fixer.replaceTextRange([tokenBefore.range[1], token.range[0]], " ")
+            },
+            missing: {
+                messageId: "missingLineBreak",
+                check: (prevToken, currentToken) => prevToken.loc.end.line === currentToken.loc.start.line,
+                createFix: (token, tokenBefore) => fixer =>
+                    fixer.replaceTextRange([tokenBefore.range[1], token.range[0]], "\n")
+            }
+        };
+
+        /**
+         * Check all arguments for line breaks in the CallExpression
+         * @param {CallExpression} node node to evaluate
+         * @param {{ messageId: string, check: Function }} checker selected checker
+         * @returns {void}
+         * @private
+         */
+        function checkArguments(node, checker) {
+            for (let i = 1; i < node.arguments.length; i++) {
+                const prevArgToken = sourceCode.getLastToken(node.arguments[i - 1]);
+                const currentArgToken = sourceCode.getFirstToken(node.arguments[i]);
+
+                if (checker.check(prevArgToken, currentArgToken)) {
+                    const tokenBefore = sourceCode.getTokenBefore(
+                        currentArgToken,
+                        { includeComments: true }
+                    );
+
+                    const hasLineCommentBefore = tokenBefore.type === "Line";
+
+                    context.report({
+                        node,
+                        loc: {
+                            start: tokenBefore.loc.end,
+                            end: currentArgToken.loc.start
+                        },
+                        messageId: checker.messageId,
+                        fix: hasLineCommentBefore ? null : checker.createFix(currentArgToken, tokenBefore)
+                    });
+                }
+            }
+        }
+
+        /**
+         * Check if open space is present in a function name
+         * @param {CallExpression} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function check(node) {
+            if (node.arguments.length < 2) {
+                return;
+            }
+
+            const option = context.options[0] || "always";
+
+            if (option === "never") {
+                checkArguments(node, checkers.unexpected);
+            } else if (option === "always") {
+                checkArguments(node, checkers.missing);
+            } else if (option === "consistent") {
+                const firstArgToken = sourceCode.getLastToken(node.arguments[0]);
+                const secondArgToken = sourceCode.getFirstToken(node.arguments[1]);
+
+                if (firstArgToken.loc.end.line === secondArgToken.loc.start.line) {
+                    checkArguments(node, checkers.unexpected);
+                } else {
+                    checkArguments(node, checkers.missing);
+                }
+            }
+        }
+
+        return {
+            CallExpression: check,
+            NewExpression: check
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/function-paren-newline.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/function-paren-newline.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/function-paren-newline.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,292 @@
+/**
+ * @fileoverview enforce consistent line breaks inside function parentheses
+ * @author Teddy Katz
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent line breaks inside function parentheses",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/function-paren-newline"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["always", "never", "consistent", "multiline", "multiline-arguments"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            minItems: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            expectedBefore: "Expected newline before ')'.",
+            expectedAfter: "Expected newline after '('.",
+            expectedBetween: "Expected newline between arguments/params.",
+            unexpectedBefore: "Unexpected newline before ')'.",
+            unexpectedAfter: "Unexpected newline after '('."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const rawOption = context.options[0] || "multiline";
+        const multilineOption = rawOption === "multiline";
+        const multilineArgumentsOption = rawOption === "multiline-arguments";
+        const consistentOption = rawOption === "consistent";
+        let minItems;
+
+        if (typeof rawOption === "object") {
+            minItems = rawOption.minItems;
+        } else if (rawOption === "always") {
+            minItems = 0;
+        } else if (rawOption === "never") {
+            minItems = Infinity;
+        } else {
+            minItems = null;
+        }
+
+        //----------------------------------------------------------------------
+        // Helpers
+        //----------------------------------------------------------------------
+
+        /**
+         * Determines whether there should be newlines inside function parens
+         * @param {ASTNode[]} elements The arguments or parameters in the list
+         * @param {boolean} hasLeftNewline `true` if the left paren has a newline in the current code.
+         * @returns {boolean} `true` if there should be newlines inside the function parens
+         */
+        function shouldHaveNewlines(elements, hasLeftNewline) {
+            if (multilineArgumentsOption && elements.length === 1) {
+                return hasLeftNewline;
+            }
+            if (multilineOption || multilineArgumentsOption) {
+                return elements.some((element, index) => index !== elements.length - 1 && element.loc.end.line !== elements[index + 1].loc.start.line);
+            }
+            if (consistentOption) {
+                return hasLeftNewline;
+            }
+            return elements.length >= minItems;
+        }
+
+        /**
+         * Validates parens
+         * @param {Object} parens An object with keys `leftParen` for the left paren token, and `rightParen` for the right paren token
+         * @param {ASTNode[]} elements The arguments or parameters in the list
+         * @returns {void}
+         */
+        function validateParens(parens, elements) {
+            const leftParen = parens.leftParen;
+            const rightParen = parens.rightParen;
+            const tokenAfterLeftParen = sourceCode.getTokenAfter(leftParen);
+            const tokenBeforeRightParen = sourceCode.getTokenBefore(rightParen);
+            const hasLeftNewline = !astUtils.isTokenOnSameLine(leftParen, tokenAfterLeftParen);
+            const hasRightNewline = !astUtils.isTokenOnSameLine(tokenBeforeRightParen, rightParen);
+            const needsNewlines = shouldHaveNewlines(elements, hasLeftNewline);
+
+            if (hasLeftNewline && !needsNewlines) {
+                context.report({
+                    node: leftParen,
+                    messageId: "unexpectedAfter",
+                    fix(fixer) {
+                        return sourceCode.getText().slice(leftParen.range[1], tokenAfterLeftParen.range[0]).trim()
+
+                            // If there is a comment between the ( and the first element, don't do a fix.
+                            ? null
+                            : fixer.removeRange([leftParen.range[1], tokenAfterLeftParen.range[0]]);
+                    }
+                });
+            } else if (!hasLeftNewline && needsNewlines) {
+                context.report({
+                    node: leftParen,
+                    messageId: "expectedAfter",
+                    fix: fixer => fixer.insertTextAfter(leftParen, "\n")
+                });
+            }
+
+            if (hasRightNewline && !needsNewlines) {
+                context.report({
+                    node: rightParen,
+                    messageId: "unexpectedBefore",
+                    fix(fixer) {
+                        return sourceCode.getText().slice(tokenBeforeRightParen.range[1], rightParen.range[0]).trim()
+
+                            // If there is a comment between the last element and the ), don't do a fix.
+                            ? null
+                            : fixer.removeRange([tokenBeforeRightParen.range[1], rightParen.range[0]]);
+                    }
+                });
+            } else if (!hasRightNewline && needsNewlines) {
+                context.report({
+                    node: rightParen,
+                    messageId: "expectedBefore",
+                    fix: fixer => fixer.insertTextBefore(rightParen, "\n")
+                });
+            }
+        }
+
+        /**
+         * Validates a list of arguments or parameters
+         * @param {Object} parens An object with keys `leftParen` for the left paren token, and `rightParen` for the right paren token
+         * @param {ASTNode[]} elements The arguments or parameters in the list
+         * @returns {void}
+         */
+        function validateArguments(parens, elements) {
+            const leftParen = parens.leftParen;
+            const tokenAfterLeftParen = sourceCode.getTokenAfter(leftParen);
+            const hasLeftNewline = !astUtils.isTokenOnSameLine(leftParen, tokenAfterLeftParen);
+            const needsNewlines = shouldHaveNewlines(elements, hasLeftNewline);
+
+            for (let i = 0; i <= elements.length - 2; i++) {
+                const currentElement = elements[i];
+                const nextElement = elements[i + 1];
+                const hasNewLine = currentElement.loc.end.line !== nextElement.loc.start.line;
+
+                if (!hasNewLine && needsNewlines) {
+                    context.report({
+                        node: currentElement,
+                        messageId: "expectedBetween",
+                        fix: fixer => fixer.insertTextBefore(nextElement, "\n")
+                    });
+                }
+            }
+        }
+
+        /**
+         * Gets the left paren and right paren tokens of a node.
+         * @param {ASTNode} node The node with parens
+         * @throws {TypeError} Unexpected node type.
+         * @returns {Object} An object with keys `leftParen` for the left paren token, and `rightParen` for the right paren token.
+         * Can also return `null` if an expression has no parens (e.g. a NewExpression with no arguments, or an ArrowFunctionExpression
+         * with a single parameter)
+         */
+        function getParenTokens(node) {
+            switch (node.type) {
+                case "NewExpression":
+                    if (!node.arguments.length &&
+                        !(
+                            astUtils.isOpeningParenToken(sourceCode.getLastToken(node, { skip: 1 })) &&
+                            astUtils.isClosingParenToken(sourceCode.getLastToken(node)) &&
+                            node.callee.range[1] < node.range[1]
+                        )
+                    ) {
+
+                        // If the NewExpression does not have parens (e.g. `new Foo`), return null.
+                        return null;
+                    }
+
+                    // falls through
+
+                case "CallExpression":
+                    return {
+                        leftParen: sourceCode.getTokenAfter(node.callee, astUtils.isOpeningParenToken),
+                        rightParen: sourceCode.getLastToken(node)
+                    };
+
+                case "FunctionDeclaration":
+                case "FunctionExpression": {
+                    const leftParen = sourceCode.getFirstToken(node, astUtils.isOpeningParenToken);
+                    const rightParen = node.params.length
+                        ? sourceCode.getTokenAfter(node.params[node.params.length - 1], astUtils.isClosingParenToken)
+                        : sourceCode.getTokenAfter(leftParen);
+
+                    return { leftParen, rightParen };
+                }
+
+                case "ArrowFunctionExpression": {
+                    const firstToken = sourceCode.getFirstToken(node, { skip: (node.async ? 1 : 0) });
+
+                    if (!astUtils.isOpeningParenToken(firstToken)) {
+
+                        // If the ArrowFunctionExpression has a single param without parens, return null.
+                        return null;
+                    }
+
+                    const rightParen = node.params.length
+                        ? sourceCode.getTokenAfter(node.params[node.params.length - 1], astUtils.isClosingParenToken)
+                        : sourceCode.getTokenAfter(firstToken);
+
+                    return {
+                        leftParen: firstToken,
+                        rightParen
+                    };
+                }
+
+                case "ImportExpression": {
+                    const leftParen = sourceCode.getFirstToken(node, 1);
+                    const rightParen = sourceCode.getLastToken(node);
+
+                    return { leftParen, rightParen };
+                }
+
+                default:
+                    throw new TypeError(`unexpected node with type ${node.type}`);
+            }
+        }
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+            [[
+                "ArrowFunctionExpression",
+                "CallExpression",
+                "FunctionDeclaration",
+                "FunctionExpression",
+                "ImportExpression",
+                "NewExpression"
+            ]](node) {
+                const parens = getParenTokens(node);
+                let params;
+
+                if (node.type === "ImportExpression") {
+                    params = [node.source];
+                } else if (astUtils.isFunction(node)) {
+                    params = node.params;
+                } else {
+                    params = node.arguments;
+                }
+
+                if (parens) {
+                    validateParens(parens, params);
+
+                    if (multilineArgumentsOption) {
+                        validateArguments(parens, params);
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/generator-star-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/generator-star-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/generator-star-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,209 @@
+/**
+ * @fileoverview Rule to check the spacing around the * in generator functions.
+ * @author Jamund Ferguson
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const OVERRIDE_SCHEMA = {
+    oneOf: [
+        {
+            enum: ["before", "after", "both", "neither"]
+        },
+        {
+            type: "object",
+            properties: {
+                before: { type: "boolean" },
+                after: { type: "boolean" }
+            },
+            additionalProperties: false
+        }
+    ]
+};
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent spacing around `*` operators in generator functions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/generator-star-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["before", "after", "both", "neither"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            before: { type: "boolean" },
+                            after: { type: "boolean" },
+                            named: OVERRIDE_SCHEMA,
+                            anonymous: OVERRIDE_SCHEMA,
+                            method: OVERRIDE_SCHEMA
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            missingBefore: "Missing space before *.",
+            missingAfter: "Missing space after *.",
+            unexpectedBefore: "Unexpected space before *.",
+            unexpectedAfter: "Unexpected space after *."
+        }
+    },
+
+    create(context) {
+
+        const optionDefinitions = {
+            before: { before: true, after: false },
+            after: { before: false, after: true },
+            both: { before: true, after: true },
+            neither: { before: false, after: false }
+        };
+
+        /**
+         * Returns resolved option definitions based on an option and defaults
+         * @param {any} option The option object or string value
+         * @param {Object} defaults The defaults to use if options are not present
+         * @returns {Object} the resolved object definition
+         */
+        function optionToDefinition(option, defaults) {
+            if (!option) {
+                return defaults;
+            }
+
+            return typeof option === "string"
+                ? optionDefinitions[option]
+                : Object.assign({}, defaults, option);
+        }
+
+        const modes = (function(option) {
+            const defaults = optionToDefinition(option, optionDefinitions.before);
+
+            return {
+                named: optionToDefinition(option.named, defaults),
+                anonymous: optionToDefinition(option.anonymous, defaults),
+                method: optionToDefinition(option.method, defaults)
+            };
+        }(context.options[0] || {}));
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Checks if the given token is a star token or not.
+         * @param {Token} token The token to check.
+         * @returns {boolean} `true` if the token is a star token.
+         */
+        function isStarToken(token) {
+            return token.value === "*" && token.type === "Punctuator";
+        }
+
+        /**
+         * Gets the generator star token of the given function node.
+         * @param {ASTNode} node The function node to get.
+         * @returns {Token} Found star token.
+         */
+        function getStarToken(node) {
+            return sourceCode.getFirstToken(
+                (node.parent.method || node.parent.type === "MethodDefinition") ? node.parent : node,
+                isStarToken
+            );
+        }
+
+        /**
+         * capitalize a given string.
+         * @param {string} str the given string.
+         * @returns {string} the capitalized string.
+         */
+        function capitalize(str) {
+            return str[0].toUpperCase() + str.slice(1);
+        }
+
+        /**
+         * Checks the spacing between two tokens before or after the star token.
+         * @param {string} kind Either "named", "anonymous", or "method"
+         * @param {string} side Either "before" or "after".
+         * @param {Token} leftToken `function` keyword token if side is "before", or
+         *     star token if side is "after".
+         * @param {Token} rightToken Star token if side is "before", or identifier
+         *     token if side is "after".
+         * @returns {void}
+         */
+        function checkSpacing(kind, side, leftToken, rightToken) {
+            if (!!(rightToken.range[0] - leftToken.range[1]) !== modes[kind][side]) {
+                const after = leftToken.value === "*";
+                const spaceRequired = modes[kind][side];
+                const node = after ? leftToken : rightToken;
+                const messageId = `${spaceRequired ? "missing" : "unexpected"}${capitalize(side)}`;
+
+                context.report({
+                    node,
+                    messageId,
+                    fix(fixer) {
+                        if (spaceRequired) {
+                            if (after) {
+                                return fixer.insertTextAfter(node, " ");
+                            }
+                            return fixer.insertTextBefore(node, " ");
+                        }
+                        return fixer.removeRange([leftToken.range[1], rightToken.range[0]]);
+                    }
+                });
+            }
+        }
+
+        /**
+         * Enforces the spacing around the star if node is a generator function.
+         * @param {ASTNode} node A function expression or declaration node.
+         * @returns {void}
+         */
+        function checkFunction(node) {
+            if (!node.generator) {
+                return;
+            }
+
+            const starToken = getStarToken(node);
+            const prevToken = sourceCode.getTokenBefore(starToken);
+            const nextToken = sourceCode.getTokenAfter(starToken);
+
+            let kind = "named";
+
+            if (node.parent.type === "MethodDefinition" || (node.parent.type === "Property" && node.parent.method)) {
+                kind = "method";
+            } else if (!node.id) {
+                kind = "anonymous";
+            }
+
+            // Only check before when preceded by `function`|`static` keyword
+            if (!(kind === "method" && starToken === sourceCode.getFirstToken(node.parent))) {
+                checkSpacing(kind, "before", prevToken, starToken);
+            }
+
+            checkSpacing(kind, "after", starToken, nextToken);
+        }
+
+        return {
+            FunctionDeclaration: checkFunction,
+            FunctionExpression: checkFunction
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/getter-return.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/getter-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/getter-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,204 @@
+/**
+ * @fileoverview Enforces that a return statement is present in property getters.
+ * @author Aladdin-ADD(hh_2013@foxmail.com)
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const TARGET_NODE_TYPE = /^(?:Arrow)?FunctionExpression$/u;
+
+/**
+ * Checks all segments in a set and returns true if any are reachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if any segment is reachable; false otherwise.
+ */
+function isAnySegmentReachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Enforce `return` statements in getters",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/getter-return"
+        },
+
+        fixable: null,
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowImplicit: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            expected: "Expected to return a value in {{name}}.",
+            expectedAlways: "Expected {{name}} to always return a value."
+        }
+    },
+
+    create(context) {
+
+        const options = context.options[0] || { allowImplicit: false };
+        const sourceCode = context.sourceCode;
+
+        let funcInfo = {
+            upper: null,
+            codePath: null,
+            hasReturn: false,
+            shouldCheck: false,
+            node: null,
+            currentSegments: []
+        };
+
+        /**
+         * Checks whether or not the last code path segment is reachable.
+         * Then reports this function if the segment is reachable.
+         *
+         * If the last code path segment is reachable, there are paths which are not
+         * returned or thrown.
+         * @param {ASTNode} node A node to check.
+         * @returns {void}
+         */
+        function checkLastSegment(node) {
+            if (funcInfo.shouldCheck &&
+                isAnySegmentReachable(funcInfo.currentSegments)
+            ) {
+                context.report({
+                    node,
+                    loc: astUtils.getFunctionHeadLoc(node, sourceCode),
+                    messageId: funcInfo.hasReturn ? "expectedAlways" : "expected",
+                    data: {
+                        name: astUtils.getFunctionNameWithKind(funcInfo.node)
+                    }
+                });
+            }
+        }
+
+        /**
+         * Checks whether a node means a getter function.
+         * @param {ASTNode} node a node to check.
+         * @returns {boolean} if node means a getter, return true; else return false.
+         */
+        function isGetter(node) {
+            const parent = node.parent;
+
+            if (TARGET_NODE_TYPE.test(node.type) && node.body.type === "BlockStatement") {
+                if (parent.kind === "get") {
+                    return true;
+                }
+                if (parent.type === "Property" && astUtils.getStaticPropertyName(parent) === "get" && parent.parent.type === "ObjectExpression") {
+
+                    // Object.defineProperty() or Reflect.defineProperty()
+                    if (parent.parent.parent.type === "CallExpression") {
+                        const callNode = parent.parent.parent.callee;
+
+                        if (astUtils.isSpecificMemberAccess(callNode, "Object", "defineProperty") ||
+                            astUtils.isSpecificMemberAccess(callNode, "Reflect", "defineProperty")) {
+                            return true;
+                        }
+                    }
+
+                    // Object.defineProperties() or Object.create()
+                    if (parent.parent.parent.type === "Property" &&
+                        parent.parent.parent.parent.type === "ObjectExpression" &&
+                        parent.parent.parent.parent.parent.type === "CallExpression") {
+                        const callNode = parent.parent.parent.parent.parent.callee;
+
+                        return astUtils.isSpecificMemberAccess(callNode, "Object", "defineProperties") ||
+                               astUtils.isSpecificMemberAccess(callNode, "Object", "create");
+                    }
+                }
+            }
+            return false;
+        }
+        return {
+
+            // Stacks this function's information.
+            onCodePathStart(codePath, node) {
+                funcInfo = {
+                    upper: funcInfo,
+                    codePath,
+                    hasReturn: false,
+                    shouldCheck: isGetter(node),
+                    node,
+                    currentSegments: new Set()
+                };
+            },
+
+            // Pops this function's information.
+            onCodePathEnd() {
+                funcInfo = funcInfo.upper;
+            },
+            onUnreachableCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+            onCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+            // Checks the return statement is valid.
+            ReturnStatement(node) {
+                if (funcInfo.shouldCheck) {
+                    funcInfo.hasReturn = true;
+
+                    // if allowImplicit: false, should also check node.argument
+                    if (!options.allowImplicit && !node.argument) {
+                        context.report({
+                            node,
+                            messageId: "expected",
+                            data: {
+                                name: astUtils.getFunctionNameWithKind(funcInfo.node)
+                            }
+                        });
+                    }
+                }
+            },
+
+            // Reports a given function if the last path is reachable.
+            "FunctionExpression:exit": checkLastSegment,
+            "ArrowFunctionExpression:exit": checkLastSegment
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/global-require.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/global-require.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/global-require.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,90 @@
+/**
+ * @fileoverview Rule for disallowing require() outside of the top-level module context
+ * @author Jamund Ferguson
+ * @deprecated in ESLint v7.0.0
+ */
+
+"use strict";
+
+const ACCEPTABLE_PARENTS = new Set([
+    "AssignmentExpression",
+    "VariableDeclarator",
+    "MemberExpression",
+    "ExpressionStatement",
+    "CallExpression",
+    "ConditionalExpression",
+    "Program",
+    "VariableDeclaration",
+    "ChainExpression"
+]);
+
+/**
+ * Finds the eslint-scope reference in the given scope.
+ * @param {Object} scope The scope to search.
+ * @param {ASTNode} node The identifier node.
+ * @returns {Reference|null} Returns the found reference or null if none were found.
+ */
+function findReference(scope, node) {
+    const references = scope.references.filter(reference => reference.identifier.range[0] === node.range[0] &&
+            reference.identifier.range[1] === node.range[1]);
+
+    if (references.length === 1) {
+        return references[0];
+    }
+
+    /* c8 ignore next */
+    return null;
+
+}
+
+/**
+ * Checks if the given identifier node is shadowed in the given scope.
+ * @param {Object} scope The current scope.
+ * @param {ASTNode} node The identifier node to check.
+ * @returns {boolean} Whether or not the name is shadowed.
+ */
+function isShadowed(scope, node) {
+    const reference = findReference(scope, node);
+
+    return reference && reference.resolved && reference.resolved.defs.length > 0;
+}
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+
+        replacedBy: [],
+
+        type: "suggestion",
+
+        docs: {
+            description: "Require `require()` calls to be placed at top-level module scope",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/global-require"
+        },
+
+        schema: [],
+        messages: {
+            unexpected: "Unexpected require()."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        return {
+            CallExpression(node) {
+                const currentScope = sourceCode.getScope(node);
+
+                if (node.callee.name === "require" && !isShadowed(currentScope, node.callee)) {
+                    const isGoodRequire = sourceCode.getAncestors(node).every(parent => ACCEPTABLE_PARENTS.has(parent.type));
+
+                    if (!isGoodRequire) {
+                        context.report({ node, messageId: "unexpected" });
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/grouped-accessor-pairs.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/grouped-accessor-pairs.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/grouped-accessor-pairs.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,215 @@
+/**
+ * @fileoverview Rule to require grouped accessor pairs in object literals and classes
+ * @author Milos Djermanovic
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/**
+ * Property name if it can be computed statically, otherwise the list of the tokens of the key node.
+ * @typedef {string|Token[]} Key
+ */
+
+/**
+ * Accessor nodes with the same key.
+ * @typedef {Object} AccessorData
+ * @property {Key} key Accessor's key
+ * @property {ASTNode[]} getters List of getter nodes.
+ * @property {ASTNode[]} setters List of setter nodes.
+ */
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not the given lists represent the equal tokens in the same order.
+ * Tokens are compared by their properties, not by instance.
+ * @param {Token[]} left First list of tokens.
+ * @param {Token[]} right Second list of tokens.
+ * @returns {boolean} `true` if the lists have same tokens.
+ */
+function areEqualTokenLists(left, right) {
+    if (left.length !== right.length) {
+        return false;
+    }
+
+    for (let i = 0; i < left.length; i++) {
+        const leftToken = left[i],
+            rightToken = right[i];
+
+        if (leftToken.type !== rightToken.type || leftToken.value !== rightToken.value) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+/**
+ * Checks whether or not the given keys are equal.
+ * @param {Key} left First key.
+ * @param {Key} right Second key.
+ * @returns {boolean} `true` if the keys are equal.
+ */
+function areEqualKeys(left, right) {
+    if (typeof left === "string" && typeof right === "string") {
+
+        // Statically computed names.
+        return left === right;
+    }
+    if (Array.isArray(left) && Array.isArray(right)) {
+
+        // Token lists.
+        return areEqualTokenLists(left, right);
+    }
+
+    return false;
+}
+
+/**
+ * Checks whether or not a given node is of an accessor kind ('get' or 'set').
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} `true` if the node is of an accessor kind.
+ */
+function isAccessorKind(node) {
+    return node.kind === "get" || node.kind === "set";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require grouped accessor pairs in object literals and classes",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/grouped-accessor-pairs"
+        },
+
+        schema: [
+            {
+                enum: ["anyOrder", "getBeforeSet", "setBeforeGet"]
+            }
+        ],
+
+        messages: {
+            notGrouped: "Accessor pair {{ formerName }} and {{ latterName }} should be grouped.",
+            invalidOrder: "Expected {{ latterName }} to be before {{ formerName }}."
+        }
+    },
+
+    create(context) {
+        const order = context.options[0] || "anyOrder";
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Reports the given accessor pair.
+         * @param {string} messageId messageId to report.
+         * @param {ASTNode} formerNode getter/setter node that is defined before `latterNode`.
+         * @param {ASTNode} latterNode getter/setter node that is defined after `formerNode`.
+         * @returns {void}
+         * @private
+         */
+        function report(messageId, formerNode, latterNode) {
+            context.report({
+                node: latterNode,
+                messageId,
+                loc: astUtils.getFunctionHeadLoc(latterNode.value, sourceCode),
+                data: {
+                    formerName: astUtils.getFunctionNameWithKind(formerNode.value),
+                    latterName: astUtils.getFunctionNameWithKind(latterNode.value)
+                }
+            });
+        }
+
+        /**
+         * Checks accessor pairs in the given list of nodes.
+         * @param {ASTNode[]} nodes The list to check.
+         * @param {Function} shouldCheck – Predicate that returns `true` if the node should be checked.
+         * @returns {void}
+         * @private
+         */
+        function checkList(nodes, shouldCheck) {
+            const accessors = [];
+            let found = false;
+
+            for (let i = 0; i < nodes.length; i++) {
+                const node = nodes[i];
+
+                if (shouldCheck(node) && isAccessorKind(node)) {
+
+                    // Creates a new `AccessorData` object for the given getter or setter node.
+                    const name = astUtils.getStaticPropertyName(node);
+                    const key = (name !== null) ? name : sourceCode.getTokens(node.key);
+
+                    // Merges the given `AccessorData` object into the given accessors list.
+                    for (let j = 0; j < accessors.length; j++) {
+                        const accessor = accessors[j];
+
+                        if (areEqualKeys(accessor.key, key)) {
+                            accessor.getters.push(...node.kind === "get" ? [node] : []);
+                            accessor.setters.push(...node.kind === "set" ? [node] : []);
+                            found = true;
+                            break;
+                        }
+                    }
+                    if (!found) {
+                        accessors.push({
+                            key,
+                            getters: node.kind === "get" ? [node] : [],
+                            setters: node.kind === "set" ? [node] : []
+                        });
+                    }
+                    found = false;
+                }
+            }
+
+            for (const { getters, setters } of accessors) {
+
+                // Don't report accessor properties that have duplicate getters or setters.
+                if (getters.length === 1 && setters.length === 1) {
+                    const [getter] = getters,
+                        [setter] = setters,
+                        getterIndex = nodes.indexOf(getter),
+                        setterIndex = nodes.indexOf(setter),
+                        formerNode = getterIndex < setterIndex ? getter : setter,
+                        latterNode = getterIndex < setterIndex ? setter : getter;
+
+                    if (Math.abs(getterIndex - setterIndex) > 1) {
+                        report("notGrouped", formerNode, latterNode);
+                    } else if (
+                        (order === "getBeforeSet" && getterIndex > setterIndex) ||
+                        (order === "setBeforeGet" && getterIndex < setterIndex)
+                    ) {
+                        report("invalidOrder", formerNode, latterNode);
+                    }
+                }
+            }
+        }
+
+        return {
+            ObjectExpression(node) {
+                checkList(node.properties, n => n.type === "Property");
+            },
+            ClassBody(node) {
+                checkList(node.body, n => n.type === "MethodDefinition" && !n.static);
+                checkList(node.body, n => n.type === "MethodDefinition" && n.static);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/guard-for-in.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/guard-for-in.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/guard-for-in.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,76 @@
+/**
+ * @fileoverview Rule to flag for-in loops without if statements inside
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require `for-in` loops to include an `if` statement",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/guard-for-in"
+        },
+
+        schema: [],
+        messages: {
+            wrap: "The body of a for-in should be wrapped in an if statement to filter unwanted properties from the prototype."
+        }
+    },
+
+    create(context) {
+
+        return {
+
+            ForInStatement(node) {
+                const body = node.body;
+
+                // empty statement
+                if (body.type === "EmptyStatement") {
+                    return;
+                }
+
+                // if statement
+                if (body.type === "IfStatement") {
+                    return;
+                }
+
+                // empty block
+                if (body.type === "BlockStatement" && body.body.length === 0) {
+                    return;
+                }
+
+                // block with just if statement
+                if (body.type === "BlockStatement" && body.body.length === 1 && body.body[0].type === "IfStatement") {
+                    return;
+                }
+
+                // block that starts with if statement
+                if (body.type === "BlockStatement" && body.body.length >= 1 && body.body[0].type === "IfStatement") {
+                    const i = body.body[0];
+
+                    // ... whose consequent is a continue
+                    if (i.consequent.type === "ContinueStatement") {
+                        return;
+                    }
+
+                    // ... whose consequent is a block that contains only a continue
+                    if (i.consequent.type === "BlockStatement" && i.consequent.body.length === 1 && i.consequent.body[0].type === "ContinueStatement") {
+                        return;
+                    }
+                }
+
+                context.report({ node, messageId: "wrap" });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/handle-callback-err.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/handle-callback-err.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/handle-callback-err.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,101 @@
+/**
+ * @fileoverview Ensure handling of errors when we know they exist.
+ * @author Jamund Ferguson
+ * @deprecated in ESLint v7.0.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+
+        replacedBy: [],
+
+        type: "suggestion",
+
+        docs: {
+            description: "Require error handling in callbacks",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/handle-callback-err"
+        },
+
+        schema: [
+            {
+                type: "string"
+            }
+        ],
+        messages: {
+            expected: "Expected error to be handled."
+        }
+    },
+
+    create(context) {
+
+        const errorArgument = context.options[0] || "err";
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Checks if the given argument should be interpreted as a regexp pattern.
+         * @param {string} stringToCheck The string which should be checked.
+         * @returns {boolean} Whether or not the string should be interpreted as a pattern.
+         */
+        function isPattern(stringToCheck) {
+            const firstChar = stringToCheck[0];
+
+            return firstChar === "^";
+        }
+
+        /**
+         * Checks if the given name matches the configured error argument.
+         * @param {string} name The name which should be compared.
+         * @returns {boolean} Whether or not the given name matches the configured error variable name.
+         */
+        function matchesConfiguredErrorName(name) {
+            if (isPattern(errorArgument)) {
+                const regexp = new RegExp(errorArgument, "u");
+
+                return regexp.test(name);
+            }
+            return name === errorArgument;
+        }
+
+        /**
+         * Get the parameters of a given function scope.
+         * @param {Object} scope The function scope.
+         * @returns {Array} All parameters of the given scope.
+         */
+        function getParameters(scope) {
+            return scope.variables.filter(variable => variable.defs[0] && variable.defs[0].type === "Parameter");
+        }
+
+        /**
+         * Check to see if we're handling the error object properly.
+         * @param {ASTNode} node The AST node to check.
+         * @returns {void}
+         */
+        function checkForError(node) {
+            const scope = sourceCode.getScope(node),
+                parameters = getParameters(scope),
+                firstParameter = parameters[0];
+
+            if (firstParameter && matchesConfiguredErrorName(firstParameter.name)) {
+                if (firstParameter.references.length === 0) {
+                    context.report({ node, messageId: "expected" });
+                }
+            }
+        }
+
+        return {
+            FunctionDeclaration: checkForError,
+            FunctionExpression: checkForError,
+            ArrowFunctionExpression: checkForError
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/id-blacklist.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/id-blacklist.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/id-blacklist.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,246 @@
+/**
+ * @fileoverview Rule that warns when identifier names that are
+ * specified in the configuration are used.
+ * @author Keith Cirkel (http://keithcirkel.co.uk)
+ * @deprecated in ESLint v7.5.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether the given node represents assignment target in a normal assignment or destructuring.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is assignment target.
+ */
+function isAssignmentTarget(node) {
+    const parent = node.parent;
+
+    return (
+
+        // normal assignment
+        (
+            parent.type === "AssignmentExpression" &&
+            parent.left === node
+        ) ||
+
+        // destructuring
+        parent.type === "ArrayPattern" ||
+        parent.type === "RestElement" ||
+        (
+            parent.type === "Property" &&
+            parent.value === node &&
+            parent.parent.type === "ObjectPattern"
+        ) ||
+        (
+            parent.type === "AssignmentPattern" &&
+            parent.left === node
+        )
+    );
+}
+
+/**
+ * Checks whether the given node represents an imported name that is renamed in the same import/export specifier.
+ *
+ * Examples:
+ * import { a as b } from 'mod'; // node `a` is renamed import
+ * export { a as b } from 'mod'; // node `a` is renamed import
+ * @param {ASTNode} node `Identifier` node to check.
+ * @returns {boolean} `true` if the node is a renamed import.
+ */
+function isRenamedImport(node) {
+    const parent = node.parent;
+
+    return (
+        (
+            parent.type === "ImportSpecifier" &&
+            parent.imported !== parent.local &&
+            parent.imported === node
+        ) ||
+        (
+            parent.type === "ExportSpecifier" &&
+            parent.parent.source && // re-export
+            parent.local !== parent.exported &&
+            parent.local === node
+        )
+    );
+}
+
+/**
+ * Checks whether the given node is a renamed identifier node in an ObjectPattern destructuring.
+ *
+ * Examples:
+ * const { a : b } = foo; // node `a` is renamed node.
+ * @param {ASTNode} node `Identifier` node to check.
+ * @returns {boolean} `true` if the node is a renamed node in an ObjectPattern destructuring.
+ */
+function isRenamedInDestructuring(node) {
+    const parent = node.parent;
+
+    return (
+        (
+            !parent.computed &&
+            parent.type === "Property" &&
+            parent.parent.type === "ObjectPattern" &&
+            parent.value !== node &&
+            parent.key === node
+        )
+    );
+}
+
+/**
+ * Checks whether the given node represents shorthand definition of a property in an object literal.
+ * @param {ASTNode} node `Identifier` node to check.
+ * @returns {boolean} `true` if the node is a shorthand property definition.
+ */
+function isShorthandPropertyDefinition(node) {
+    const parent = node.parent;
+
+    return (
+        parent.type === "Property" &&
+        parent.parent.type === "ObjectExpression" &&
+        parent.shorthand
+    );
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: ["id-denylist"],
+
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow specified identifiers",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/id-blacklist"
+        },
+
+        schema: {
+            type: "array",
+            items: {
+                type: "string"
+            },
+            uniqueItems: true
+        },
+        messages: {
+            restricted: "Identifier '{{name}}' is restricted."
+        }
+    },
+
+    create(context) {
+
+        const denyList = new Set(context.options);
+        const reportedNodes = new Set();
+        const sourceCode = context.sourceCode;
+
+        let globalScope;
+
+        /**
+         * Checks whether the given name is restricted.
+         * @param {string} name The name to check.
+         * @returns {boolean} `true` if the name is restricted.
+         * @private
+         */
+        function isRestricted(name) {
+            return denyList.has(name);
+        }
+
+        /**
+         * Checks whether the given node represents a reference to a global variable that is not declared in the source code.
+         * These identifiers will be allowed, as it is assumed that user has no control over the names of external global variables.
+         * @param {ASTNode} node `Identifier` node to check.
+         * @returns {boolean} `true` if the node is a reference to a global variable.
+         */
+        function isReferenceToGlobalVariable(node) {
+            const variable = globalScope.set.get(node.name);
+
+            return variable && variable.defs.length === 0 &&
+                variable.references.some(ref => ref.identifier === node);
+        }
+
+        /**
+         * Determines whether the given node should be checked.
+         * @param {ASTNode} node `Identifier` node.
+         * @returns {boolean} `true` if the node should be checked.
+         */
+        function shouldCheck(node) {
+            const parent = node.parent;
+
+            /*
+             * Member access has special rules for checking property names.
+             * Read access to a property with a restricted name is allowed, because it can be on an object that user has no control over.
+             * Write access isn't allowed, because it potentially creates a new property with a restricted name.
+             */
+            if (
+                parent.type === "MemberExpression" &&
+                parent.property === node &&
+                !parent.computed
+            ) {
+                return isAssignmentTarget(parent);
+            }
+
+            return (
+                parent.type !== "CallExpression" &&
+                parent.type !== "NewExpression" &&
+                !isRenamedImport(node) &&
+                !isRenamedInDestructuring(node) &&
+                !(
+                    isReferenceToGlobalVariable(node) &&
+                    !isShorthandPropertyDefinition(node)
+                )
+            );
+        }
+
+        /**
+         * Reports an AST node as a rule violation.
+         * @param {ASTNode} node The node to report.
+         * @returns {void}
+         * @private
+         */
+        function report(node) {
+
+            /*
+             * We used the range instead of the node because it's possible
+             * for the same identifier to be represented by two different
+             * nodes, with the most clear example being shorthand properties:
+             * { foo }
+             * In this case, "foo" is represented by one node for the name
+             * and one for the value. The only way to know they are the same
+             * is to look at the range.
+             */
+            if (!reportedNodes.has(node.range.toString())) {
+                context.report({
+                    node,
+                    messageId: "restricted",
+                    data: {
+                        name: node.name
+                    }
+                });
+                reportedNodes.add(node.range.toString());
+            }
+
+        }
+
+        return {
+
+            Program(node) {
+                globalScope = sourceCode.getScope(node);
+            },
+
+            Identifier(node) {
+                if (isRestricted(node.name) && shouldCheck(node)) {
+                    report(node);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/id-denylist.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/id-denylist.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/id-denylist.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,228 @@
+/**
+ * @fileoverview Rule that warns when identifier names that are
+ * specified in the configuration are used.
+ * @author Keith Cirkel (http://keithcirkel.co.uk)
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether the given node represents assignment target in a normal assignment or destructuring.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is assignment target.
+ */
+function isAssignmentTarget(node) {
+    const parent = node.parent;
+
+    return (
+
+        // normal assignment
+        (
+            parent.type === "AssignmentExpression" &&
+            parent.left === node
+        ) ||
+
+        // destructuring
+        parent.type === "ArrayPattern" ||
+        parent.type === "RestElement" ||
+        (
+            parent.type === "Property" &&
+            parent.value === node &&
+            parent.parent.type === "ObjectPattern"
+        ) ||
+        (
+            parent.type === "AssignmentPattern" &&
+            parent.left === node
+        )
+    );
+}
+
+/**
+ * Checks whether the given node represents an imported name that is renamed in the same import/export specifier.
+ *
+ * Examples:
+ * import { a as b } from 'mod'; // node `a` is renamed import
+ * export { a as b } from 'mod'; // node `a` is renamed import
+ * @param {ASTNode} node `Identifier` node to check.
+ * @returns {boolean} `true` if the node is a renamed import.
+ */
+function isRenamedImport(node) {
+    const parent = node.parent;
+
+    return (
+        (
+            parent.type === "ImportSpecifier" &&
+            parent.imported !== parent.local &&
+            parent.imported === node
+        ) ||
+        (
+            parent.type === "ExportSpecifier" &&
+            parent.parent.source && // re-export
+            parent.local !== parent.exported &&
+            parent.local === node
+        )
+    );
+}
+
+/**
+ * Checks whether the given node is an ObjectPattern destructuring.
+ *
+ * Examples:
+ * const { a : b } = foo;
+ * @param {ASTNode} node `Identifier` node to check.
+ * @returns {boolean} `true` if the node is in an ObjectPattern destructuring.
+ */
+function isPropertyNameInDestructuring(node) {
+    const parent = node.parent;
+
+    return (
+        (
+            !parent.computed &&
+            parent.type === "Property" &&
+            parent.parent.type === "ObjectPattern" &&
+            parent.key === node
+        )
+    );
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow specified identifiers",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/id-denylist"
+        },
+
+        schema: {
+            type: "array",
+            items: {
+                type: "string"
+            },
+            uniqueItems: true
+        },
+        messages: {
+            restricted: "Identifier '{{name}}' is restricted.",
+            restrictedPrivate: "Identifier '#{{name}}' is restricted."
+        }
+    },
+
+    create(context) {
+
+        const denyList = new Set(context.options);
+        const reportedNodes = new Set();
+        const sourceCode = context.sourceCode;
+
+        let globalScope;
+
+        /**
+         * Checks whether the given name is restricted.
+         * @param {string} name The name to check.
+         * @returns {boolean} `true` if the name is restricted.
+         * @private
+         */
+        function isRestricted(name) {
+            return denyList.has(name);
+        }
+
+        /**
+         * Checks whether the given node represents a reference to a global variable that is not declared in the source code.
+         * These identifiers will be allowed, as it is assumed that user has no control over the names of external global variables.
+         * @param {ASTNode} node `Identifier` node to check.
+         * @returns {boolean} `true` if the node is a reference to a global variable.
+         */
+        function isReferenceToGlobalVariable(node) {
+            const variable = globalScope.set.get(node.name);
+
+            return variable && variable.defs.length === 0 &&
+                variable.references.some(ref => ref.identifier === node);
+        }
+
+        /**
+         * Determines whether the given node should be checked.
+         * @param {ASTNode} node `Identifier` node.
+         * @returns {boolean} `true` if the node should be checked.
+         */
+        function shouldCheck(node) {
+            const parent = node.parent;
+
+            /*
+             * Member access has special rules for checking property names.
+             * Read access to a property with a restricted name is allowed, because it can be on an object that user has no control over.
+             * Write access isn't allowed, because it potentially creates a new property with a restricted name.
+             */
+            if (
+                parent.type === "MemberExpression" &&
+                parent.property === node &&
+                !parent.computed
+            ) {
+                return isAssignmentTarget(parent);
+            }
+
+            return (
+                parent.type !== "CallExpression" &&
+                parent.type !== "NewExpression" &&
+                !isRenamedImport(node) &&
+                !isPropertyNameInDestructuring(node) &&
+                !isReferenceToGlobalVariable(node)
+            );
+        }
+
+        /**
+         * Reports an AST node as a rule violation.
+         * @param {ASTNode} node The node to report.
+         * @returns {void}
+         * @private
+         */
+        function report(node) {
+
+            /*
+             * We used the range instead of the node because it's possible
+             * for the same identifier to be represented by two different
+             * nodes, with the most clear example being shorthand properties:
+             * { foo }
+             * In this case, "foo" is represented by one node for the name
+             * and one for the value. The only way to know they are the same
+             * is to look at the range.
+             */
+            if (!reportedNodes.has(node.range.toString())) {
+                const isPrivate = node.type === "PrivateIdentifier";
+
+                context.report({
+                    node,
+                    messageId: isPrivate ? "restrictedPrivate" : "restricted",
+                    data: {
+                        name: node.name
+                    }
+                });
+                reportedNodes.add(node.range.toString());
+            }
+        }
+
+        return {
+
+            Program(node) {
+                globalScope = sourceCode.getScope(node);
+            },
+
+            [[
+                "Identifier",
+                "PrivateIdentifier"
+            ]](node) {
+                if (isRestricted(node.name) && shouldCheck(node)) {
+                    report(node);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/id-length.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/id-length.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/id-length.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,177 @@
+/**
+ * @fileoverview Rule that warns when identifier names are shorter or longer
+ * than the values provided in configuration.
+ * @author Burak Yigit Kaya aka BYK
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { getGraphemeCount } = require("../shared/string-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce minimum and maximum identifier lengths",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/id-length"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    min: {
+                        type: "integer",
+                        default: 2
+                    },
+                    max: {
+                        type: "integer"
+                    },
+                    exceptions: {
+                        type: "array",
+                        uniqueItems: true,
+                        items: {
+                            type: "string"
+                        }
+                    },
+                    exceptionPatterns: {
+                        type: "array",
+                        uniqueItems: true,
+                        items: {
+                            type: "string"
+                        }
+                    },
+                    properties: {
+                        enum: ["always", "never"]
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            tooShort: "Identifier name '{{name}}' is too short (< {{min}}).",
+            tooShortPrivate: "Identifier name '#{{name}}' is too short (< {{min}}).",
+            tooLong: "Identifier name '{{name}}' is too long (> {{max}}).",
+            tooLongPrivate: "Identifier name #'{{name}}' is too long (> {{max}})."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const minLength = typeof options.min !== "undefined" ? options.min : 2;
+        const maxLength = typeof options.max !== "undefined" ? options.max : Infinity;
+        const properties = options.properties !== "never";
+        const exceptions = new Set(options.exceptions);
+        const exceptionPatterns = (options.exceptionPatterns || []).map(pattern => new RegExp(pattern, "u"));
+        const reportedNodes = new Set();
+
+        /**
+         * Checks if a string matches the provided exception patterns
+         * @param {string} name The string to check.
+         * @returns {boolean} if the string is a match
+         * @private
+         */
+        function matchesExceptionPattern(name) {
+            return exceptionPatterns.some(pattern => pattern.test(name));
+        }
+
+        const SUPPORTED_EXPRESSIONS = {
+            MemberExpression: properties && function(parent) {
+                return !parent.computed && (
+
+                    // regular property assignment
+                    (parent.parent.left === parent && parent.parent.type === "AssignmentExpression" ||
+
+                    // or the last identifier in an ObjectPattern destructuring
+                    parent.parent.type === "Property" && parent.parent.value === parent &&
+                    parent.parent.parent.type === "ObjectPattern" && parent.parent.parent.parent.left === parent.parent.parent)
+                );
+            },
+            AssignmentPattern(parent, node) {
+                return parent.left === node;
+            },
+            VariableDeclarator(parent, node) {
+                return parent.id === node;
+            },
+            Property(parent, node) {
+
+                if (parent.parent.type === "ObjectPattern") {
+                    const isKeyAndValueSame = parent.value.name === parent.key.name;
+
+                    return (
+                        !isKeyAndValueSame && parent.value === node ||
+                        isKeyAndValueSame && parent.key === node && properties
+                    );
+                }
+                return properties && !parent.computed && parent.key.name === node.name;
+            },
+            ImportDefaultSpecifier: true,
+            RestElement: true,
+            FunctionExpression: true,
+            ArrowFunctionExpression: true,
+            ClassDeclaration: true,
+            FunctionDeclaration: true,
+            MethodDefinition: true,
+            PropertyDefinition: true,
+            CatchClause: true,
+            ArrayPattern: true
+        };
+
+        return {
+            [[
+                "Identifier",
+                "PrivateIdentifier"
+            ]](node) {
+                const name = node.name;
+                const parent = node.parent;
+
+                const nameLength = getGraphemeCount(name);
+
+                const isShort = nameLength < minLength;
+                const isLong = nameLength > maxLength;
+
+                if (!(isShort || isLong) || exceptions.has(name) || matchesExceptionPattern(name)) {
+                    return; // Nothing to report
+                }
+
+                const isValidExpression = SUPPORTED_EXPRESSIONS[parent.type];
+
+                /*
+                 * We used the range instead of the node because it's possible
+                 * for the same identifier to be represented by two different
+                 * nodes, with the most clear example being shorthand properties:
+                 * { foo }
+                 * In this case, "foo" is represented by one node for the name
+                 * and one for the value. The only way to know they are the same
+                 * is to look at the range.
+                 */
+                if (isValidExpression && !reportedNodes.has(node.range.toString()) && (isValidExpression === true || isValidExpression(parent, node))) {
+                    reportedNodes.add(node.range.toString());
+
+                    let messageId = isShort ? "tooShort" : "tooLong";
+
+                    if (node.type === "PrivateIdentifier") {
+                        messageId += "Private";
+                    }
+
+                    context.report({
+                        node,
+                        messageId,
+                        data: { name, min: minLength, max: maxLength }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/id-match.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/id-match.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/id-match.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,299 @@
+/**
+ * @fileoverview Rule to flag non-matching identifiers
+ * @author Matthieu Larcher
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require identifiers to match a specified regular expression",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/id-match"
+        },
+
+        schema: [
+            {
+                type: "string"
+            },
+            {
+                type: "object",
+                properties: {
+                    properties: {
+                        type: "boolean",
+                        default: false
+                    },
+                    classFields: {
+                        type: "boolean",
+                        default: false
+                    },
+                    onlyDeclarations: {
+                        type: "boolean",
+                        default: false
+                    },
+                    ignoreDestructuring: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            notMatch: "Identifier '{{name}}' does not match the pattern '{{pattern}}'.",
+            notMatchPrivate: "Identifier '#{{name}}' does not match the pattern '{{pattern}}'."
+        }
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Options
+        //--------------------------------------------------------------------------
+        const pattern = context.options[0] || "^.+$",
+            regexp = new RegExp(pattern, "u");
+
+        const options = context.options[1] || {},
+            checkProperties = !!options.properties,
+            checkClassFields = !!options.classFields,
+            onlyDeclarations = !!options.onlyDeclarations,
+            ignoreDestructuring = !!options.ignoreDestructuring;
+
+        const sourceCode = context.sourceCode;
+        let globalScope;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        // contains reported nodes to avoid reporting twice on destructuring with shorthand notation
+        const reportedNodes = new Set();
+        const ALLOWED_PARENT_TYPES = new Set(["CallExpression", "NewExpression"]);
+        const DECLARATION_TYPES = new Set(["FunctionDeclaration", "VariableDeclarator"]);
+        const IMPORT_TYPES = new Set(["ImportSpecifier", "ImportNamespaceSpecifier", "ImportDefaultSpecifier"]);
+
+        /**
+         * Checks whether the given node represents a reference to a global variable that is not declared in the source code.
+         * These identifiers will be allowed, as it is assumed that user has no control over the names of external global variables.
+         * @param {ASTNode} node `Identifier` node to check.
+         * @returns {boolean} `true` if the node is a reference to a global variable.
+         */
+        function isReferenceToGlobalVariable(node) {
+            const variable = globalScope.set.get(node.name);
+
+            return variable && variable.defs.length === 0 &&
+                variable.references.some(ref => ref.identifier === node);
+        }
+
+        /**
+         * Checks if a string matches the provided pattern
+         * @param {string} name The string to check.
+         * @returns {boolean} if the string is a match
+         * @private
+         */
+        function isInvalid(name) {
+            return !regexp.test(name);
+        }
+
+        /**
+         * Checks if a parent of a node is an ObjectPattern.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} if the node is inside an ObjectPattern
+         * @private
+         */
+        function isInsideObjectPattern(node) {
+            let { parent } = node;
+
+            while (parent) {
+                if (parent.type === "ObjectPattern") {
+                    return true;
+                }
+
+                parent = parent.parent;
+            }
+
+            return false;
+        }
+
+        /**
+         * Verifies if we should report an error or not based on the effective
+         * parent node and the identifier name.
+         * @param {ASTNode} effectiveParent The effective parent node of the node to be reported
+         * @param {string} name The identifier name of the identifier node
+         * @returns {boolean} whether an error should be reported or not
+         */
+        function shouldReport(effectiveParent, name) {
+            return (!onlyDeclarations || DECLARATION_TYPES.has(effectiveParent.type)) &&
+                !ALLOWED_PARENT_TYPES.has(effectiveParent.type) && isInvalid(name);
+        }
+
+        /**
+         * Reports an AST node as a rule violation.
+         * @param {ASTNode} node The node to report.
+         * @returns {void}
+         * @private
+         */
+        function report(node) {
+
+            /*
+             * We used the range instead of the node because it's possible
+             * for the same identifier to be represented by two different
+             * nodes, with the most clear example being shorthand properties:
+             * { foo }
+             * In this case, "foo" is represented by one node for the name
+             * and one for the value. The only way to know they are the same
+             * is to look at the range.
+             */
+            if (!reportedNodes.has(node.range.toString())) {
+
+                const messageId = (node.type === "PrivateIdentifier")
+                    ? "notMatchPrivate" : "notMatch";
+
+                context.report({
+                    node,
+                    messageId,
+                    data: {
+                        name: node.name,
+                        pattern
+                    }
+                });
+                reportedNodes.add(node.range.toString());
+            }
+        }
+
+        return {
+
+            Program(node) {
+                globalScope = sourceCode.getScope(node);
+            },
+
+            Identifier(node) {
+                const name = node.name,
+                    parent = node.parent,
+                    effectiveParent = (parent.type === "MemberExpression") ? parent.parent : parent;
+
+                if (isReferenceToGlobalVariable(node)) {
+                    return;
+                }
+
+                if (parent.type === "MemberExpression") {
+
+                    if (!checkProperties) {
+                        return;
+                    }
+
+                    // Always check object names
+                    if (parent.object.type === "Identifier" &&
+                        parent.object.name === name) {
+                        if (isInvalid(name)) {
+                            report(node);
+                        }
+
+                    // Report AssignmentExpressions left side's assigned variable id
+                    } else if (effectiveParent.type === "AssignmentExpression" &&
+                        effectiveParent.left.type === "MemberExpression" &&
+                        effectiveParent.left.property.name === node.name) {
+                        if (isInvalid(name)) {
+                            report(node);
+                        }
+
+                    // Report AssignmentExpressions only if they are the left side of the assignment
+                    } else if (effectiveParent.type === "AssignmentExpression" && effectiveParent.right.type !== "MemberExpression") {
+                        if (isInvalid(name)) {
+                            report(node);
+                        }
+                    }
+
+                // For https://github.com/eslint/eslint/issues/15123
+                } else if (
+                    parent.type === "Property" &&
+                    parent.parent.type === "ObjectExpression" &&
+                    parent.key === node &&
+                    !parent.computed
+                ) {
+                    if (checkProperties && isInvalid(name)) {
+                        report(node);
+                    }
+
+                /*
+                 * Properties have their own rules, and
+                 * AssignmentPattern nodes can be treated like Properties:
+                 * e.g.: const { no_camelcased = false } = bar;
+                 */
+                } else if (parent.type === "Property" || parent.type === "AssignmentPattern") {
+
+                    if (parent.parent && parent.parent.type === "ObjectPattern") {
+                        if (!ignoreDestructuring && parent.shorthand && parent.value.left && isInvalid(name)) {
+                            report(node);
+                        }
+
+                        const assignmentKeyEqualsValue = parent.key.name === parent.value.name;
+
+                        // prevent checking righthand side of destructured object
+                        if (!assignmentKeyEqualsValue && parent.key === node) {
+                            return;
+                        }
+
+                        const valueIsInvalid = parent.value.name && isInvalid(name);
+
+                        // ignore destructuring if the option is set, unless a new identifier is created
+                        if (valueIsInvalid && !(assignmentKeyEqualsValue && ignoreDestructuring)) {
+                            report(node);
+                        }
+                    }
+
+                    // never check properties or always ignore destructuring
+                    if ((!checkProperties && !parent.computed) || (ignoreDestructuring && isInsideObjectPattern(node))) {
+                        return;
+                    }
+
+                    // don't check right hand side of AssignmentExpression to prevent duplicate warnings
+                    if (parent.right !== node && shouldReport(effectiveParent, name)) {
+                        report(node);
+                    }
+
+                // Check if it's an import specifier
+                } else if (IMPORT_TYPES.has(parent.type)) {
+
+                    // Report only if the local imported identifier is invalid
+                    if (parent.local && parent.local.name === node.name && isInvalid(name)) {
+                        report(node);
+                    }
+
+                } else if (parent.type === "PropertyDefinition") {
+
+                    if (checkClassFields && isInvalid(name)) {
+                        report(node);
+                    }
+
+                // Report anything that is invalid that isn't a CallExpression
+                } else if (shouldReport(effectiveParent, name)) {
+                    report(node);
+                }
+            },
+
+            "PrivateIdentifier"(node) {
+
+                const isClassField = node.parent.type === "PropertyDefinition";
+
+                if (isClassField && !checkClassFields) {
+                    return;
+                }
+
+                if (isInvalid(node.name)) {
+                    report(node);
+                }
+            }
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/implicit-arrow-linebreak.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/implicit-arrow-linebreak.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/implicit-arrow-linebreak.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,84 @@
+/**
+ * @fileoverview enforce the location of arrow function bodies
+ * @author Sharmila Jesupaul
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+const { isCommentToken, isNotOpeningParenToken } = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce the location of arrow function bodies",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/implicit-arrow-linebreak"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["beside", "below"]
+            }
+        ],
+        messages: {
+            expected: "Expected a linebreak before this expression.",
+            unexpected: "Expected no linebreak before this expression."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const option = context.options[0] || "beside";
+
+        /**
+         * Validates the location of an arrow function body
+         * @param {ASTNode} node The arrow function body
+         * @returns {void}
+         */
+        function validateExpression(node) {
+            if (node.body.type === "BlockStatement") {
+                return;
+            }
+
+            const arrowToken = sourceCode.getTokenBefore(node.body, isNotOpeningParenToken);
+            const firstTokenOfBody = sourceCode.getTokenAfter(arrowToken);
+
+            if (arrowToken.loc.end.line === firstTokenOfBody.loc.start.line && option === "below") {
+                context.report({
+                    node: firstTokenOfBody,
+                    messageId: "expected",
+                    fix: fixer => fixer.insertTextBefore(firstTokenOfBody, "\n")
+                });
+            } else if (arrowToken.loc.end.line !== firstTokenOfBody.loc.start.line && option === "beside") {
+                context.report({
+                    node: firstTokenOfBody,
+                    messageId: "unexpected",
+                    fix(fixer) {
+                        if (sourceCode.getFirstTokenBetween(arrowToken, firstTokenOfBody, { includeComments: true, filter: isCommentToken })) {
+                            return null;
+                        }
+
+                        return fixer.replaceTextRange([arrowToken.range[1], firstTokenOfBody.range[0]], " ");
+                    }
+                });
+            }
+        }
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+        return {
+            ArrowFunctionExpression: node => validateExpression(node)
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/indent-legacy.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/indent-legacy.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/indent-legacy.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,1126 @@
+/**
+ * @fileoverview This option sets a specific tab width for your code
+ *
+ * This rule has been ported and modified from nodeca.
+ * @author Vitaly Puzrin
+ * @author Gyandeep Singh
+ * @deprecated in ESLint v4.0.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+// this rule has known coverage issues, but it's deprecated and shouldn't be updated in the future anyway.
+/* c8 ignore next */
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent indentation",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/indent-legacy"
+        },
+
+        deprecated: true,
+
+        replacedBy: ["indent"],
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["tab"]
+                    },
+                    {
+                        type: "integer",
+                        minimum: 0
+                    }
+                ]
+            },
+            {
+                type: "object",
+                properties: {
+                    SwitchCase: {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    VariableDeclarator: {
+                        oneOf: [
+                            {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            {
+                                type: "object",
+                                properties: {
+                                    var: {
+                                        type: "integer",
+                                        minimum: 0
+                                    },
+                                    let: {
+                                        type: "integer",
+                                        minimum: 0
+                                    },
+                                    const: {
+                                        type: "integer",
+                                        minimum: 0
+                                    }
+                                }
+                            }
+                        ]
+                    },
+                    outerIIFEBody: {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    MemberExpression: {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    FunctionDeclaration: {
+                        type: "object",
+                        properties: {
+                            parameters: {
+                                oneOf: [
+                                    {
+                                        type: "integer",
+                                        minimum: 0
+                                    },
+                                    {
+                                        enum: ["first"]
+                                    }
+                                ]
+                            },
+                            body: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        }
+                    },
+                    FunctionExpression: {
+                        type: "object",
+                        properties: {
+                            parameters: {
+                                oneOf: [
+                                    {
+                                        type: "integer",
+                                        minimum: 0
+                                    },
+                                    {
+                                        enum: ["first"]
+                                    }
+                                ]
+                            },
+                            body: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        }
+                    },
+                    CallExpression: {
+                        type: "object",
+                        properties: {
+                            parameters: {
+                                oneOf: [
+                                    {
+                                        type: "integer",
+                                        minimum: 0
+                                    },
+                                    {
+                                        enum: ["first"]
+                                    }
+                                ]
+                            }
+                        }
+                    },
+                    ArrayExpression: {
+                        oneOf: [
+                            {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            {
+                                enum: ["first"]
+                            }
+                        ]
+                    },
+                    ObjectExpression: {
+                        oneOf: [
+                            {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            {
+                                enum: ["first"]
+                            }
+                        ]
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            expected: "Expected indentation of {{expected}} but found {{actual}}."
+        }
+    },
+
+    create(context) {
+        const DEFAULT_VARIABLE_INDENT = 1;
+        const DEFAULT_PARAMETER_INDENT = null; // For backwards compatibility, don't check parameter indentation unless specified in the config
+        const DEFAULT_FUNCTION_BODY_INDENT = 1;
+
+        let indentType = "space";
+        let indentSize = 4;
+        const options = {
+            SwitchCase: 0,
+            VariableDeclarator: {
+                var: DEFAULT_VARIABLE_INDENT,
+                let: DEFAULT_VARIABLE_INDENT,
+                const: DEFAULT_VARIABLE_INDENT
+            },
+            outerIIFEBody: null,
+            FunctionDeclaration: {
+                parameters: DEFAULT_PARAMETER_INDENT,
+                body: DEFAULT_FUNCTION_BODY_INDENT
+            },
+            FunctionExpression: {
+                parameters: DEFAULT_PARAMETER_INDENT,
+                body: DEFAULT_FUNCTION_BODY_INDENT
+            },
+            CallExpression: {
+                arguments: DEFAULT_PARAMETER_INDENT
+            },
+            ArrayExpression: 1,
+            ObjectExpression: 1
+        };
+
+        const sourceCode = context.sourceCode;
+
+        if (context.options.length) {
+            if (context.options[0] === "tab") {
+                indentSize = 1;
+                indentType = "tab";
+            } else /* c8 ignore start */ if (typeof context.options[0] === "number") {
+                indentSize = context.options[0];
+                indentType = "space";
+            }/* c8 ignore stop */
+
+            if (context.options[1]) {
+                const opts = context.options[1];
+
+                options.SwitchCase = opts.SwitchCase || 0;
+                const variableDeclaratorRules = opts.VariableDeclarator;
+
+                if (typeof variableDeclaratorRules === "number") {
+                    options.VariableDeclarator = {
+                        var: variableDeclaratorRules,
+                        let: variableDeclaratorRules,
+                        const: variableDeclaratorRules
+                    };
+                } else if (typeof variableDeclaratorRules === "object") {
+                    Object.assign(options.VariableDeclarator, variableDeclaratorRules);
+                }
+
+                if (typeof opts.outerIIFEBody === "number") {
+                    options.outerIIFEBody = opts.outerIIFEBody;
+                }
+
+                if (typeof opts.MemberExpression === "number") {
+                    options.MemberExpression = opts.MemberExpression;
+                }
+
+                if (typeof opts.FunctionDeclaration === "object") {
+                    Object.assign(options.FunctionDeclaration, opts.FunctionDeclaration);
+                }
+
+                if (typeof opts.FunctionExpression === "object") {
+                    Object.assign(options.FunctionExpression, opts.FunctionExpression);
+                }
+
+                if (typeof opts.CallExpression === "object") {
+                    Object.assign(options.CallExpression, opts.CallExpression);
+                }
+
+                if (typeof opts.ArrayExpression === "number" || typeof opts.ArrayExpression === "string") {
+                    options.ArrayExpression = opts.ArrayExpression;
+                }
+
+                if (typeof opts.ObjectExpression === "number" || typeof opts.ObjectExpression === "string") {
+                    options.ObjectExpression = opts.ObjectExpression;
+                }
+            }
+        }
+
+        const caseIndentStore = {};
+
+        /**
+         * Creates an error message for a line, given the expected/actual indentation.
+         * @param {int} expectedAmount The expected amount of indentation characters for this line
+         * @param {int} actualSpaces The actual number of indentation spaces that were found on this line
+         * @param {int} actualTabs The actual number of indentation tabs that were found on this line
+         * @returns {string} An error message for this line
+         */
+        function createErrorMessageData(expectedAmount, actualSpaces, actualTabs) {
+            const expectedStatement = `${expectedAmount} ${indentType}${expectedAmount === 1 ? "" : "s"}`; // e.g. "2 tabs"
+            const foundSpacesWord = `space${actualSpaces === 1 ? "" : "s"}`; // e.g. "space"
+            const foundTabsWord = `tab${actualTabs === 1 ? "" : "s"}`; // e.g. "tabs"
+            let foundStatement;
+
+            if (actualSpaces > 0 && actualTabs > 0) {
+                foundStatement = `${actualSpaces} ${foundSpacesWord} and ${actualTabs} ${foundTabsWord}`; // e.g. "1 space and 2 tabs"
+            } else if (actualSpaces > 0) {
+
+                /*
+                 * Abbreviate the message if the expected indentation is also spaces.
+                 * e.g. 'Expected 4 spaces but found 2' rather than 'Expected 4 spaces but found 2 spaces'
+                 */
+                foundStatement = indentType === "space" ? actualSpaces : `${actualSpaces} ${foundSpacesWord}`;
+            } else if (actualTabs > 0) {
+                foundStatement = indentType === "tab" ? actualTabs : `${actualTabs} ${foundTabsWord}`;
+            } else {
+                foundStatement = "0";
+            }
+            return {
+                expected: expectedStatement,
+                actual: foundStatement
+            };
+        }
+
+        /**
+         * Reports a given indent violation
+         * @param {ASTNode} node Node violating the indent rule
+         * @param {int} needed Expected indentation character count
+         * @param {int} gottenSpaces Indentation space count in the actual node/code
+         * @param {int} gottenTabs Indentation tab count in the actual node/code
+         * @param {Object} [loc] Error line and column location
+         * @param {boolean} isLastNodeCheck Is the error for last node check
+         * @returns {void}
+         */
+        function report(node, needed, gottenSpaces, gottenTabs, loc, isLastNodeCheck) {
+            if (gottenSpaces && gottenTabs) {
+
+                // To avoid conflicts with `no-mixed-spaces-and-tabs`, don't report lines that have both spaces and tabs.
+                return;
+            }
+
+            const desiredIndent = (indentType === "space" ? " " : "\t").repeat(needed);
+
+            const textRange = isLastNodeCheck
+                ? [node.range[1] - node.loc.end.column, node.range[1] - node.loc.end.column + gottenSpaces + gottenTabs]
+                : [node.range[0] - node.loc.start.column, node.range[0] - node.loc.start.column + gottenSpaces + gottenTabs];
+
+            context.report({
+                node,
+                loc,
+                messageId: "expected",
+                data: createErrorMessageData(needed, gottenSpaces, gottenTabs),
+                fix: fixer => fixer.replaceTextRange(textRange, desiredIndent)
+            });
+        }
+
+        /**
+         * Get the actual indent of node
+         * @param {ASTNode|Token} node Node to examine
+         * @param {boolean} [byLastLine=false] get indent of node's last line
+         * @returns {Object} The node's indent. Contains keys `space` and `tab`, representing the indent of each character. Also
+         * contains keys `goodChar` and `badChar`, where `goodChar` is the amount of the user's desired indentation character, and
+         * `badChar` is the amount of the other indentation character.
+         */
+        function getNodeIndent(node, byLastLine) {
+            const token = byLastLine ? sourceCode.getLastToken(node) : sourceCode.getFirstToken(node);
+            const srcCharsBeforeNode = sourceCode.getText(token, token.loc.start.column).split("");
+            const indentChars = srcCharsBeforeNode.slice(0, srcCharsBeforeNode.findIndex(char => char !== " " && char !== "\t"));
+            const spaces = indentChars.filter(char => char === " ").length;
+            const tabs = indentChars.filter(char => char === "\t").length;
+
+            return {
+                space: spaces,
+                tab: tabs,
+                goodChar: indentType === "space" ? spaces : tabs,
+                badChar: indentType === "space" ? tabs : spaces
+            };
+        }
+
+        /**
+         * Checks node is the first in its own start line. By default it looks by start line.
+         * @param {ASTNode} node The node to check
+         * @param {boolean} [byEndLocation=false] Lookup based on start position or end
+         * @returns {boolean} true if its the first in the its start line
+         */
+        function isNodeFirstInLine(node, byEndLocation) {
+            const firstToken = byEndLocation === true ? sourceCode.getLastToken(node, 1) : sourceCode.getTokenBefore(node),
+                startLine = byEndLocation === true ? node.loc.end.line : node.loc.start.line,
+                endLine = firstToken ? firstToken.loc.end.line : -1;
+
+            return startLine !== endLine;
+        }
+
+        /**
+         * Check indent for node
+         * @param {ASTNode} node Node to check
+         * @param {int} neededIndent needed indent
+         * @returns {void}
+         */
+        function checkNodeIndent(node, neededIndent) {
+            const actualIndent = getNodeIndent(node, false);
+
+            if (
+                node.type !== "ArrayExpression" &&
+                node.type !== "ObjectExpression" &&
+                (actualIndent.goodChar !== neededIndent || actualIndent.badChar !== 0) &&
+                isNodeFirstInLine(node)
+            ) {
+                report(node, neededIndent, actualIndent.space, actualIndent.tab);
+            }
+
+            if (node.type === "IfStatement" && node.alternate) {
+                const elseToken = sourceCode.getTokenBefore(node.alternate);
+
+                checkNodeIndent(elseToken, neededIndent);
+
+                if (!isNodeFirstInLine(node.alternate)) {
+                    checkNodeIndent(node.alternate, neededIndent);
+                }
+            }
+
+            if (node.type === "TryStatement" && node.handler) {
+                const catchToken = sourceCode.getFirstToken(node.handler);
+
+                checkNodeIndent(catchToken, neededIndent);
+            }
+
+            if (node.type === "TryStatement" && node.finalizer) {
+                const finallyToken = sourceCode.getTokenBefore(node.finalizer);
+
+                checkNodeIndent(finallyToken, neededIndent);
+            }
+
+            if (node.type === "DoWhileStatement") {
+                const whileToken = sourceCode.getTokenAfter(node.body);
+
+                checkNodeIndent(whileToken, neededIndent);
+            }
+        }
+
+        /**
+         * Check indent for nodes list
+         * @param {ASTNode[]} nodes list of node objects
+         * @param {int} indent needed indent
+         * @returns {void}
+         */
+        function checkNodesIndent(nodes, indent) {
+            nodes.forEach(node => checkNodeIndent(node, indent));
+        }
+
+        /**
+         * Check last node line indent this detects, that block closed correctly
+         * @param {ASTNode} node Node to examine
+         * @param {int} lastLineIndent needed indent
+         * @returns {void}
+         */
+        function checkLastNodeLineIndent(node, lastLineIndent) {
+            const lastToken = sourceCode.getLastToken(node);
+            const endIndent = getNodeIndent(lastToken, true);
+
+            if ((endIndent.goodChar !== lastLineIndent || endIndent.badChar !== 0) && isNodeFirstInLine(node, true)) {
+                report(
+                    node,
+                    lastLineIndent,
+                    endIndent.space,
+                    endIndent.tab,
+                    { line: lastToken.loc.start.line, column: lastToken.loc.start.column },
+                    true
+                );
+            }
+        }
+
+        /**
+         * Check last node line indent this detects, that block closed correctly
+         * This function for more complicated return statement case, where closing parenthesis may be followed by ';'
+         * @param {ASTNode} node Node to examine
+         * @param {int} firstLineIndent first line needed indent
+         * @returns {void}
+         */
+        function checkLastReturnStatementLineIndent(node, firstLineIndent) {
+
+            /*
+             * in case if return statement ends with ');' we have traverse back to ')'
+             * otherwise we'll measure indent for ';' and replace ')'
+             */
+            const lastToken = sourceCode.getLastToken(node, astUtils.isClosingParenToken);
+            const textBeforeClosingParenthesis = sourceCode.getText(lastToken, lastToken.loc.start.column).slice(0, -1);
+
+            if (textBeforeClosingParenthesis.trim()) {
+
+                // There are tokens before the closing paren, don't report this case
+                return;
+            }
+
+            const endIndent = getNodeIndent(lastToken, true);
+
+            if (endIndent.goodChar !== firstLineIndent) {
+                report(
+                    node,
+                    firstLineIndent,
+                    endIndent.space,
+                    endIndent.tab,
+                    { line: lastToken.loc.start.line, column: lastToken.loc.start.column },
+                    true
+                );
+            }
+        }
+
+        /**
+         * Check first node line indent is correct
+         * @param {ASTNode} node Node to examine
+         * @param {int} firstLineIndent needed indent
+         * @returns {void}
+         */
+        function checkFirstNodeLineIndent(node, firstLineIndent) {
+            const startIndent = getNodeIndent(node, false);
+
+            if ((startIndent.goodChar !== firstLineIndent || startIndent.badChar !== 0) && isNodeFirstInLine(node)) {
+                report(
+                    node,
+                    firstLineIndent,
+                    startIndent.space,
+                    startIndent.tab,
+                    { line: node.loc.start.line, column: node.loc.start.column }
+                );
+            }
+        }
+
+        /**
+         * Returns a parent node of given node based on a specified type
+         * if not present then return null
+         * @param {ASTNode} node node to examine
+         * @param {string} type type that is being looked for
+         * @param {string} stopAtList end points for the evaluating code
+         * @returns {ASTNode|void} if found then node otherwise null
+         */
+        function getParentNodeByType(node, type, stopAtList) {
+            let parent = node.parent;
+            const stopAtSet = new Set(stopAtList || ["Program"]);
+
+            while (parent.type !== type && !stopAtSet.has(parent.type) && parent.type !== "Program") {
+                parent = parent.parent;
+            }
+
+            return parent.type === type ? parent : null;
+        }
+
+        /**
+         * Returns the VariableDeclarator based on the current node
+         * if not present then return null
+         * @param {ASTNode} node node to examine
+         * @returns {ASTNode|void} if found then node otherwise null
+         */
+        function getVariableDeclaratorNode(node) {
+            return getParentNodeByType(node, "VariableDeclarator");
+        }
+
+        /**
+         * Check to see if the node is part of the multi-line variable declaration.
+         * Also if its on the same line as the varNode
+         * @param {ASTNode} node node to check
+         * @param {ASTNode} varNode variable declaration node to check against
+         * @returns {boolean} True if all the above condition satisfy
+         */
+        function isNodeInVarOnTop(node, varNode) {
+            return varNode &&
+                varNode.parent.loc.start.line === node.loc.start.line &&
+                varNode.parent.declarations.length > 1;
+        }
+
+        /**
+         * Check to see if the argument before the callee node is multi-line and
+         * there should only be 1 argument before the callee node
+         * @param {ASTNode} node node to check
+         * @returns {boolean} True if arguments are multi-line
+         */
+        function isArgBeforeCalleeNodeMultiline(node) {
+            const parent = node.parent;
+
+            if (parent.arguments.length >= 2 && parent.arguments[1] === node) {
+                return parent.arguments[0].loc.end.line > parent.arguments[0].loc.start.line;
+            }
+
+            return false;
+        }
+
+        /**
+         * Check to see if the node is a file level IIFE
+         * @param {ASTNode} node The function node to check.
+         * @returns {boolean} True if the node is the outer IIFE
+         */
+        function isOuterIIFE(node) {
+            const parent = node.parent;
+            let stmt = parent.parent;
+
+            /*
+             * Verify that the node is an IIEF
+             */
+            if (
+                parent.type !== "CallExpression" ||
+                parent.callee !== node) {
+
+                return false;
+            }
+
+            /*
+             * Navigate legal ancestors to determine whether this IIEF is outer
+             */
+            while (
+                stmt.type === "UnaryExpression" && (
+                    stmt.operator === "!" ||
+                    stmt.operator === "~" ||
+                    stmt.operator === "+" ||
+                    stmt.operator === "-") ||
+                stmt.type === "AssignmentExpression" ||
+                stmt.type === "LogicalExpression" ||
+                stmt.type === "SequenceExpression" ||
+                stmt.type === "VariableDeclarator") {
+
+                stmt = stmt.parent;
+            }
+
+            return ((
+                stmt.type === "ExpressionStatement" ||
+                stmt.type === "VariableDeclaration") &&
+                stmt.parent && stmt.parent.type === "Program"
+            );
+        }
+
+        /**
+         * Check indent for function block content
+         * @param {ASTNode} node A BlockStatement node that is inside of a function.
+         * @returns {void}
+         */
+        function checkIndentInFunctionBlock(node) {
+
+            /*
+             * Search first caller in chain.
+             * Ex.:
+             *
+             * Models <- Identifier
+             *   .User
+             *   .find()
+             *   .exec(function() {
+             *   // function body
+             * });
+             *
+             * Looks for 'Models'
+             */
+            const calleeNode = node.parent; // FunctionExpression
+            let indent;
+
+            if (calleeNode.parent &&
+                (calleeNode.parent.type === "Property" ||
+                calleeNode.parent.type === "ArrayExpression")) {
+
+                // If function is part of array or object, comma can be put at left
+                indent = getNodeIndent(calleeNode, false).goodChar;
+            } else {
+
+                // If function is standalone, simple calculate indent
+                indent = getNodeIndent(calleeNode).goodChar;
+            }
+
+            if (calleeNode.parent.type === "CallExpression") {
+                const calleeParent = calleeNode.parent;
+
+                if (calleeNode.type !== "FunctionExpression" && calleeNode.type !== "ArrowFunctionExpression") {
+                    if (calleeParent && calleeParent.loc.start.line < node.loc.start.line) {
+                        indent = getNodeIndent(calleeParent).goodChar;
+                    }
+                } else {
+                    if (isArgBeforeCalleeNodeMultiline(calleeNode) &&
+                        calleeParent.callee.loc.start.line === calleeParent.callee.loc.end.line &&
+                        !isNodeFirstInLine(calleeNode)) {
+                        indent = getNodeIndent(calleeParent).goodChar;
+                    }
+                }
+            }
+
+            /*
+             * function body indent should be indent + indent size, unless this
+             * is a FunctionDeclaration, FunctionExpression, or outer IIFE and the corresponding options are enabled.
+             */
+            let functionOffset = indentSize;
+
+            if (options.outerIIFEBody !== null && isOuterIIFE(calleeNode)) {
+                functionOffset = options.outerIIFEBody * indentSize;
+            } else if (calleeNode.type === "FunctionExpression") {
+                functionOffset = options.FunctionExpression.body * indentSize;
+            } else if (calleeNode.type === "FunctionDeclaration") {
+                functionOffset = options.FunctionDeclaration.body * indentSize;
+            }
+            indent += functionOffset;
+
+            // check if the node is inside a variable
+            const parentVarNode = getVariableDeclaratorNode(node);
+
+            if (parentVarNode && isNodeInVarOnTop(node, parentVarNode)) {
+                indent += indentSize * options.VariableDeclarator[parentVarNode.parent.kind];
+            }
+
+            if (node.body.length > 0) {
+                checkNodesIndent(node.body, indent);
+            }
+
+            checkLastNodeLineIndent(node, indent - functionOffset);
+        }
+
+
+        /**
+         * Checks if the given node starts and ends on the same line
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} Whether or not the block starts and ends on the same line.
+         */
+        function isSingleLineNode(node) {
+            const lastToken = sourceCode.getLastToken(node),
+                startLine = node.loc.start.line,
+                endLine = lastToken.loc.end.line;
+
+            return startLine === endLine;
+        }
+
+        /**
+         * Check indent for array block content or object block content
+         * @param {ASTNode} node node to examine
+         * @returns {void}
+         */
+        function checkIndentInArrayOrObjectBlock(node) {
+
+            // Skip inline
+            if (isSingleLineNode(node)) {
+                return;
+            }
+
+            let elements = (node.type === "ArrayExpression") ? node.elements : node.properties;
+
+            // filter out empty elements example would be [ , 2] so remove first element as espree considers it as null
+            elements = elements.filter(elem => elem !== null);
+
+            let nodeIndent;
+            let elementsIndent;
+            const parentVarNode = getVariableDeclaratorNode(node);
+
+            // TODO - come up with a better strategy in future
+            if (isNodeFirstInLine(node)) {
+                const parent = node.parent;
+
+                nodeIndent = getNodeIndent(parent).goodChar;
+                if (!parentVarNode || parentVarNode.loc.start.line !== node.loc.start.line) {
+                    if (parent.type !== "VariableDeclarator" || parentVarNode === parentVarNode.parent.declarations[0]) {
+                        if (parent.type === "VariableDeclarator" && parentVarNode.loc.start.line === parent.loc.start.line) {
+                            nodeIndent += (indentSize * options.VariableDeclarator[parentVarNode.parent.kind]);
+                        } else if (parent.type === "ObjectExpression" || parent.type === "ArrayExpression") {
+                            const parentElements = node.parent.type === "ObjectExpression" ? node.parent.properties : node.parent.elements;
+
+                            if (parentElements[0] &&
+                                    parentElements[0].loc.start.line === parent.loc.start.line &&
+                                    parentElements[0].loc.end.line !== parent.loc.start.line) {
+
+                                /*
+                                 * If the first element of the array spans multiple lines, don't increase the expected indentation of the rest.
+                                 * e.g. [{
+                                 *        foo: 1
+                                 *      },
+                                 *      {
+                                 *        bar: 1
+                                 *      }]
+                                 * the second object is not indented.
+                                 */
+                            } else if (typeof options[parent.type] === "number") {
+                                nodeIndent += options[parent.type] * indentSize;
+                            } else {
+                                nodeIndent = parentElements[0].loc.start.column;
+                            }
+                        } else if (parent.type === "CallExpression" || parent.type === "NewExpression") {
+                            if (typeof options.CallExpression.arguments === "number") {
+                                nodeIndent += options.CallExpression.arguments * indentSize;
+                            } else if (options.CallExpression.arguments === "first") {
+                                if (parent.arguments.includes(node)) {
+                                    nodeIndent = parent.arguments[0].loc.start.column;
+                                }
+                            } else {
+                                nodeIndent += indentSize;
+                            }
+                        } else if (parent.type === "LogicalExpression" || parent.type === "ArrowFunctionExpression") {
+                            nodeIndent += indentSize;
+                        }
+                    }
+                }
+
+                checkFirstNodeLineIndent(node, nodeIndent);
+            } else {
+                nodeIndent = getNodeIndent(node).goodChar;
+            }
+
+            if (options[node.type] === "first") {
+                elementsIndent = elements.length ? elements[0].loc.start.column : 0; // If there are no elements, elementsIndent doesn't matter.
+            } else {
+                elementsIndent = nodeIndent + indentSize * options[node.type];
+            }
+
+            /*
+             * Check if the node is a multiple variable declaration; if so, then
+             * make sure indentation takes that into account.
+             */
+            if (isNodeInVarOnTop(node, parentVarNode)) {
+                elementsIndent += indentSize * options.VariableDeclarator[parentVarNode.parent.kind];
+            }
+
+            checkNodesIndent(elements, elementsIndent);
+
+            if (elements.length > 0) {
+
+                // Skip last block line check if last item in same line
+                if (elements[elements.length - 1].loc.end.line === node.loc.end.line) {
+                    return;
+                }
+            }
+
+            checkLastNodeLineIndent(node, nodeIndent +
+                (isNodeInVarOnTop(node, parentVarNode) ? options.VariableDeclarator[parentVarNode.parent.kind] * indentSize : 0));
+        }
+
+        /**
+         * Check if the node or node body is a BlockStatement or not
+         * @param {ASTNode} node node to test
+         * @returns {boolean} True if it or its body is a block statement
+         */
+        function isNodeBodyBlock(node) {
+            return node.type === "BlockStatement" || node.type === "ClassBody" || (node.body && node.body.type === "BlockStatement") ||
+                (node.consequent && node.consequent.type === "BlockStatement");
+        }
+
+        /**
+         * Check indentation for blocks
+         * @param {ASTNode} node node to check
+         * @returns {void}
+         */
+        function blockIndentationCheck(node) {
+
+            // Skip inline blocks
+            if (isSingleLineNode(node)) {
+                return;
+            }
+
+            if (node.parent && (
+                node.parent.type === "FunctionExpression" ||
+                node.parent.type === "FunctionDeclaration" ||
+                node.parent.type === "ArrowFunctionExpression")
+            ) {
+                checkIndentInFunctionBlock(node);
+                return;
+            }
+
+            let indent;
+            let nodesToCheck = [];
+
+            /*
+             * For this statements we should check indent from statement beginning,
+             * not from the beginning of the block.
+             */
+            const statementsWithProperties = [
+                "IfStatement", "WhileStatement", "ForStatement", "ForInStatement", "ForOfStatement", "DoWhileStatement", "ClassDeclaration", "TryStatement"
+            ];
+
+            if (node.parent && statementsWithProperties.includes(node.parent.type) && isNodeBodyBlock(node)) {
+                indent = getNodeIndent(node.parent).goodChar;
+            } else if (node.parent && node.parent.type === "CatchClause") {
+                indent = getNodeIndent(node.parent.parent).goodChar;
+            } else {
+                indent = getNodeIndent(node).goodChar;
+            }
+
+            if (node.type === "IfStatement" && node.consequent.type !== "BlockStatement") {
+                nodesToCheck = [node.consequent];
+            } else if (Array.isArray(node.body)) {
+                nodesToCheck = node.body;
+            } else {
+                nodesToCheck = [node.body];
+            }
+
+            if (nodesToCheck.length > 0) {
+                checkNodesIndent(nodesToCheck, indent + indentSize);
+            }
+
+            if (node.type === "BlockStatement") {
+                checkLastNodeLineIndent(node, indent);
+            }
+        }
+
+        /**
+         * Filter out the elements which are on the same line of each other or the node.
+         * basically have only 1 elements from each line except the variable declaration line.
+         * @param {ASTNode} node Variable declaration node
+         * @returns {ASTNode[]} Filtered elements
+         */
+        function filterOutSameLineVars(node) {
+            return node.declarations.reduce((finalCollection, elem) => {
+                const lastElem = finalCollection[finalCollection.length - 1];
+
+                if ((elem.loc.start.line !== node.loc.start.line && !lastElem) ||
+                    (lastElem && lastElem.loc.start.line !== elem.loc.start.line)) {
+                    finalCollection.push(elem);
+                }
+
+                return finalCollection;
+            }, []);
+        }
+
+        /**
+         * Check indentation for variable declarations
+         * @param {ASTNode} node node to examine
+         * @returns {void}
+         */
+        function checkIndentInVariableDeclarations(node) {
+            const elements = filterOutSameLineVars(node);
+            const nodeIndent = getNodeIndent(node).goodChar;
+            const lastElement = elements[elements.length - 1];
+
+            const elementsIndent = nodeIndent + indentSize * options.VariableDeclarator[node.kind];
+
+            checkNodesIndent(elements, elementsIndent);
+
+            // Only check the last line if there is any token after the last item
+            if (sourceCode.getLastToken(node).loc.end.line <= lastElement.loc.end.line) {
+                return;
+            }
+
+            const tokenBeforeLastElement = sourceCode.getTokenBefore(lastElement);
+
+            if (tokenBeforeLastElement.value === ",") {
+
+                // Special case for comma-first syntax where the semicolon is indented
+                checkLastNodeLineIndent(node, getNodeIndent(tokenBeforeLastElement).goodChar);
+            } else {
+                checkLastNodeLineIndent(node, elementsIndent - indentSize);
+            }
+        }
+
+        /**
+         * Check and decide whether to check for indentation for blockless nodes
+         * Scenarios are for or while statements without braces around them
+         * @param {ASTNode} node node to examine
+         * @returns {void}
+         */
+        function blockLessNodes(node) {
+            if (node.body.type !== "BlockStatement") {
+                blockIndentationCheck(node);
+            }
+        }
+
+        /**
+         * Returns the expected indentation for the case statement
+         * @param {ASTNode} node node to examine
+         * @param {int} [providedSwitchIndent] indent for switch statement
+         * @returns {int} indent size
+         */
+        function expectedCaseIndent(node, providedSwitchIndent) {
+            const switchNode = (node.type === "SwitchStatement") ? node : node.parent;
+            const switchIndent = typeof providedSwitchIndent === "undefined"
+                ? getNodeIndent(switchNode).goodChar
+                : providedSwitchIndent;
+            let caseIndent;
+
+            if (caseIndentStore[switchNode.loc.start.line]) {
+                return caseIndentStore[switchNode.loc.start.line];
+            }
+
+            if (switchNode.cases.length > 0 && options.SwitchCase === 0) {
+                caseIndent = switchIndent;
+            } else {
+                caseIndent = switchIndent + (indentSize * options.SwitchCase);
+            }
+
+            caseIndentStore[switchNode.loc.start.line] = caseIndent;
+            return caseIndent;
+
+        }
+
+        /**
+         * Checks whether a return statement is wrapped in ()
+         * @param {ASTNode} node node to examine
+         * @returns {boolean} the result
+         */
+        function isWrappedInParenthesis(node) {
+            const regex = /^return\s*?\(\s*?\);*?/u;
+
+            const statementWithoutArgument = sourceCode.getText(node).replace(
+                sourceCode.getText(node.argument), ""
+            );
+
+            return regex.test(statementWithoutArgument);
+        }
+
+        return {
+            Program(node) {
+                if (node.body.length > 0) {
+
+                    // Root nodes should have no indent
+                    checkNodesIndent(node.body, getNodeIndent(node).goodChar);
+                }
+            },
+
+            ClassBody: blockIndentationCheck,
+
+            BlockStatement: blockIndentationCheck,
+
+            WhileStatement: blockLessNodes,
+
+            ForStatement: blockLessNodes,
+
+            ForInStatement: blockLessNodes,
+
+            ForOfStatement: blockLessNodes,
+
+            DoWhileStatement: blockLessNodes,
+
+            IfStatement(node) {
+                if (node.consequent.type !== "BlockStatement" && node.consequent.loc.start.line > node.loc.start.line) {
+                    blockIndentationCheck(node);
+                }
+            },
+
+            VariableDeclaration(node) {
+                if (node.declarations[node.declarations.length - 1].loc.start.line > node.declarations[0].loc.start.line) {
+                    checkIndentInVariableDeclarations(node);
+                }
+            },
+
+            ObjectExpression(node) {
+                checkIndentInArrayOrObjectBlock(node);
+            },
+
+            ArrayExpression(node) {
+                checkIndentInArrayOrObjectBlock(node);
+            },
+
+            MemberExpression(node) {
+
+                if (typeof options.MemberExpression === "undefined") {
+                    return;
+                }
+
+                if (isSingleLineNode(node)) {
+                    return;
+                }
+
+                /*
+                 * The typical layout of variable declarations and assignments
+                 * alter the expectation of correct indentation. Skip them.
+                 * TODO: Add appropriate configuration options for variable
+                 * declarations and assignments.
+                 */
+                if (getParentNodeByType(node, "VariableDeclarator", ["FunctionExpression", "ArrowFunctionExpression"])) {
+                    return;
+                }
+
+                if (getParentNodeByType(node, "AssignmentExpression", ["FunctionExpression"])) {
+                    return;
+                }
+
+                const propertyIndent = getNodeIndent(node).goodChar + indentSize * options.MemberExpression;
+
+                const checkNodes = [node.property];
+
+                const dot = sourceCode.getTokenBefore(node.property);
+
+                if (dot.type === "Punctuator" && dot.value === ".") {
+                    checkNodes.push(dot);
+                }
+
+                checkNodesIndent(checkNodes, propertyIndent);
+            },
+
+            SwitchStatement(node) {
+
+                // Switch is not a 'BlockStatement'
+                const switchIndent = getNodeIndent(node).goodChar;
+                const caseIndent = expectedCaseIndent(node, switchIndent);
+
+                checkNodesIndent(node.cases, caseIndent);
+
+
+                checkLastNodeLineIndent(node, switchIndent);
+            },
+
+            SwitchCase(node) {
+
+                // Skip inline cases
+                if (isSingleLineNode(node)) {
+                    return;
+                }
+                const caseIndent = expectedCaseIndent(node);
+
+                checkNodesIndent(node.consequent, caseIndent + indentSize);
+            },
+
+            FunctionDeclaration(node) {
+                if (isSingleLineNode(node)) {
+                    return;
+                }
+                if (options.FunctionDeclaration.parameters === "first" && node.params.length) {
+                    checkNodesIndent(node.params.slice(1), node.params[0].loc.start.column);
+                } else if (options.FunctionDeclaration.parameters !== null) {
+                    checkNodesIndent(node.params, getNodeIndent(node).goodChar + indentSize * options.FunctionDeclaration.parameters);
+                }
+            },
+
+            FunctionExpression(node) {
+                if (isSingleLineNode(node)) {
+                    return;
+                }
+                if (options.FunctionExpression.parameters === "first" && node.params.length) {
+                    checkNodesIndent(node.params.slice(1), node.params[0].loc.start.column);
+                } else if (options.FunctionExpression.parameters !== null) {
+                    checkNodesIndent(node.params, getNodeIndent(node).goodChar + indentSize * options.FunctionExpression.parameters);
+                }
+            },
+
+            ReturnStatement(node) {
+                if (isSingleLineNode(node)) {
+                    return;
+                }
+
+                const firstLineIndent = getNodeIndent(node).goodChar;
+
+                // in case if return statement is wrapped in parenthesis
+                if (isWrappedInParenthesis(node)) {
+                    checkLastReturnStatementLineIndent(node, firstLineIndent);
+                } else {
+                    checkNodeIndent(node, firstLineIndent);
+                }
+            },
+
+            CallExpression(node) {
+                if (isSingleLineNode(node)) {
+                    return;
+                }
+                if (options.CallExpression.arguments === "first" && node.arguments.length) {
+                    checkNodesIndent(node.arguments.slice(1), node.arguments[0].loc.start.column);
+                } else if (options.CallExpression.arguments !== null) {
+                    checkNodesIndent(node.arguments, getNodeIndent(node).goodChar + indentSize * options.CallExpression.arguments);
+                }
+            }
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/indent.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/indent.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/indent.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,1803 @@
+/**
+ * @fileoverview This rule sets a specific indentation style and width for your code
+ *
+ * @author Teddy Katz
+ * @author Vitaly Puzrin
+ * @author Gyandeep Singh
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const KNOWN_NODES = new Set([
+    "AssignmentExpression",
+    "AssignmentPattern",
+    "ArrayExpression",
+    "ArrayPattern",
+    "ArrowFunctionExpression",
+    "AwaitExpression",
+    "BlockStatement",
+    "BinaryExpression",
+    "BreakStatement",
+    "CallExpression",
+    "CatchClause",
+    "ChainExpression",
+    "ClassBody",
+    "ClassDeclaration",
+    "ClassExpression",
+    "ConditionalExpression",
+    "ContinueStatement",
+    "DoWhileStatement",
+    "DebuggerStatement",
+    "EmptyStatement",
+    "ExperimentalRestProperty",
+    "ExperimentalSpreadProperty",
+    "ExpressionStatement",
+    "ForStatement",
+    "ForInStatement",
+    "ForOfStatement",
+    "FunctionDeclaration",
+    "FunctionExpression",
+    "Identifier",
+    "IfStatement",
+    "Literal",
+    "LabeledStatement",
+    "LogicalExpression",
+    "MemberExpression",
+    "MetaProperty",
+    "MethodDefinition",
+    "NewExpression",
+    "ObjectExpression",
+    "ObjectPattern",
+    "PrivateIdentifier",
+    "Program",
+    "Property",
+    "PropertyDefinition",
+    "RestElement",
+    "ReturnStatement",
+    "SequenceExpression",
+    "SpreadElement",
+    "StaticBlock",
+    "Super",
+    "SwitchCase",
+    "SwitchStatement",
+    "TaggedTemplateExpression",
+    "TemplateElement",
+    "TemplateLiteral",
+    "ThisExpression",
+    "ThrowStatement",
+    "TryStatement",
+    "UnaryExpression",
+    "UpdateExpression",
+    "VariableDeclaration",
+    "VariableDeclarator",
+    "WhileStatement",
+    "WithStatement",
+    "YieldExpression",
+    "JSXFragment",
+    "JSXOpeningFragment",
+    "JSXClosingFragment",
+    "JSXIdentifier",
+    "JSXNamespacedName",
+    "JSXMemberExpression",
+    "JSXEmptyExpression",
+    "JSXExpressionContainer",
+    "JSXElement",
+    "JSXClosingElement",
+    "JSXOpeningElement",
+    "JSXAttribute",
+    "JSXSpreadAttribute",
+    "JSXText",
+    "ExportDefaultDeclaration",
+    "ExportNamedDeclaration",
+    "ExportAllDeclaration",
+    "ExportSpecifier",
+    "ImportDeclaration",
+    "ImportSpecifier",
+    "ImportDefaultSpecifier",
+    "ImportNamespaceSpecifier",
+    "ImportExpression"
+]);
+
+/*
+ * General rule strategy:
+ * 1. An OffsetStorage instance stores a map of desired offsets, where each token has a specified offset from another
+ *    specified token or to the first column.
+ * 2. As the AST is traversed, modify the desired offsets of tokens accordingly. For example, when entering a
+ *    BlockStatement, offset all of the tokens in the BlockStatement by 1 indent level from the opening curly
+ *    brace of the BlockStatement.
+ * 3. After traversing the AST, calculate the expected indentation levels of every token according to the
+ *    OffsetStorage container.
+ * 4. For each line, compare the expected indentation of the first token to the actual indentation in the file,
+ *    and report the token if the two values are not equal.
+ */
+
+
+/**
+ * A mutable map that stores (key, value) pairs. The keys are numeric indices, and must be unique.
+ * This is intended to be a generic wrapper around a map with non-negative integer keys, so that the underlying implementation
+ * can easily be swapped out.
+ */
+class IndexMap {
+
+    /**
+     * Creates an empty map
+     * @param {number} maxKey The maximum key
+     */
+    constructor(maxKey) {
+
+        // Initializing the array with the maximum expected size avoids dynamic reallocations that could degrade performance.
+        this._values = Array(maxKey + 1);
+    }
+
+    /**
+     * Inserts an entry into the map.
+     * @param {number} key The entry's key
+     * @param {any} value The entry's value
+     * @returns {void}
+     */
+    insert(key, value) {
+        this._values[key] = value;
+    }
+
+    /**
+     * Finds the value of the entry with the largest key less than or equal to the provided key
+     * @param {number} key The provided key
+     * @returns {*|undefined} The value of the found entry, or undefined if no such entry exists.
+     */
+    findLastNotAfter(key) {
+        const values = this._values;
+
+        for (let index = key; index >= 0; index--) {
+            const value = values[index];
+
+            if (value) {
+                return value;
+            }
+        }
+        return void 0;
+    }
+
+    /**
+     * Deletes all of the keys in the interval [start, end)
+     * @param {number} start The start of the range
+     * @param {number} end The end of the range
+     * @returns {void}
+     */
+    deleteRange(start, end) {
+        this._values.fill(void 0, start, end);
+    }
+}
+
+/**
+ * A helper class to get token-based info related to indentation
+ */
+class TokenInfo {
+
+    /**
+     * @param {SourceCode} sourceCode A SourceCode object
+     */
+    constructor(sourceCode) {
+        this.sourceCode = sourceCode;
+        this.firstTokensByLineNumber = new Map();
+        const tokens = sourceCode.tokensAndComments;
+
+        for (let i = 0; i < tokens.length; i++) {
+            const token = tokens[i];
+
+            if (!this.firstTokensByLineNumber.has(token.loc.start.line)) {
+                this.firstTokensByLineNumber.set(token.loc.start.line, token);
+            }
+            if (!this.firstTokensByLineNumber.has(token.loc.end.line) && sourceCode.text.slice(token.range[1] - token.loc.end.column, token.range[1]).trim()) {
+                this.firstTokensByLineNumber.set(token.loc.end.line, token);
+            }
+        }
+    }
+
+    /**
+     * Gets the first token on a given token's line
+     * @param {Token|ASTNode} token a node or token
+     * @returns {Token} The first token on the given line
+     */
+    getFirstTokenOfLine(token) {
+        return this.firstTokensByLineNumber.get(token.loc.start.line);
+    }
+
+    /**
+     * Determines whether a token is the first token in its line
+     * @param {Token} token The token
+     * @returns {boolean} `true` if the token is the first on its line
+     */
+    isFirstTokenOfLine(token) {
+        return this.getFirstTokenOfLine(token) === token;
+    }
+
+    /**
+     * Get the actual indent of a token
+     * @param {Token} token Token to examine. This should be the first token on its line.
+     * @returns {string} The indentation characters that precede the token
+     */
+    getTokenIndent(token) {
+        return this.sourceCode.text.slice(token.range[0] - token.loc.start.column, token.range[0]);
+    }
+}
+
+/**
+ * A class to store information on desired offsets of tokens from each other
+ */
+class OffsetStorage {
+
+    /**
+     * @param {TokenInfo} tokenInfo a TokenInfo instance
+     * @param {number} indentSize The desired size of each indentation level
+     * @param {string} indentType The indentation character
+     * @param {number} maxIndex The maximum end index of any token
+     */
+    constructor(tokenInfo, indentSize, indentType, maxIndex) {
+        this._tokenInfo = tokenInfo;
+        this._indentSize = indentSize;
+        this._indentType = indentType;
+
+        this._indexMap = new IndexMap(maxIndex);
+        this._indexMap.insert(0, { offset: 0, from: null, force: false });
+
+        this._lockedFirstTokens = new WeakMap();
+        this._desiredIndentCache = new WeakMap();
+        this._ignoredTokens = new WeakSet();
+    }
+
+    _getOffsetDescriptor(token) {
+        return this._indexMap.findLastNotAfter(token.range[0]);
+    }
+
+    /**
+     * Sets the offset column of token B to match the offset column of token A.
+     * - **WARNING**: This matches a *column*, even if baseToken is not the first token on its line. In
+     * most cases, `setDesiredOffset` should be used instead.
+     * @param {Token} baseToken The first token
+     * @param {Token} offsetToken The second token, whose offset should be matched to the first token
+     * @returns {void}
+     */
+    matchOffsetOf(baseToken, offsetToken) {
+
+        /*
+         * lockedFirstTokens is a map from a token whose indentation is controlled by the "first" option to
+         * the token that it depends on. For example, with the `ArrayExpression: first` option, the first
+         * token of each element in the array after the first will be mapped to the first token of the first
+         * element. The desired indentation of each of these tokens is computed based on the desired indentation
+         * of the "first" element, rather than through the normal offset mechanism.
+         */
+        this._lockedFirstTokens.set(offsetToken, baseToken);
+    }
+
+    /**
+     * Sets the desired offset of a token.
+     *
+     * This uses a line-based offset collapsing behavior to handle tokens on the same line.
+     * For example, consider the following two cases:
+     *
+     * (
+     *     [
+     *         bar
+     *     ]
+     * )
+     *
+     * ([
+     *     bar
+     * ])
+     *
+     * Based on the first case, it's clear that the `bar` token needs to have an offset of 1 indent level (4 spaces) from
+     * the `[` token, and the `[` token has to have an offset of 1 indent level from the `(` token. Since the `(` token is
+     * the first on its line (with an indent of 0 spaces), the `bar` token needs to be offset by 2 indent levels (8 spaces)
+     * from the start of its line.
+     *
+     * However, in the second case `bar` should only be indented by 4 spaces. This is because the offset of 1 indent level
+     * between the `(` and the `[` tokens gets "collapsed" because the two tokens are on the same line. As a result, the
+     * `(` token is mapped to the `[` token with an offset of 0, and the rule correctly decides that `bar` should be indented
+     * by 1 indent level from the start of the line.
+     *
+     * This is useful because rule listeners can usually just call `setDesiredOffset` for all the tokens in the node,
+     * without needing to check which lines those tokens are on.
+     *
+     * Note that since collapsing only occurs when two tokens are on the same line, there are a few cases where non-intuitive
+     * behavior can occur. For example, consider the following cases:
+     *
+     * foo(
+     * ).
+     *     bar(
+     *         baz
+     *     )
+     *
+     * foo(
+     * ).bar(
+     *     baz
+     * )
+     *
+     * Based on the first example, it would seem that `bar` should be offset by 1 indent level from `foo`, and `baz`
+     * should be offset by 1 indent level from `bar`. However, this is not correct, because it would result in `baz`
+     * being indented by 2 indent levels in the second case (since `foo`, `bar`, and `baz` are all on separate lines, no
+     * collapsing would occur).
+     *
+     * Instead, the correct way would be to offset `baz` by 1 level from `bar`, offset `bar` by 1 level from the `)`, and
+     * offset the `)` by 0 levels from `foo`. This ensures that the offset between `bar` and the `)` are correctly collapsed
+     * in the second case.
+     * @param {Token} token The token
+     * @param {Token} fromToken The token that `token` should be offset from
+     * @param {number} offset The desired indent level
+     * @returns {void}
+     */
+    setDesiredOffset(token, fromToken, offset) {
+        return this.setDesiredOffsets(token.range, fromToken, offset);
+    }
+
+    /**
+     * Sets the desired offset of all tokens in a range
+     * It's common for node listeners in this file to need to apply the same offset to a large, contiguous range of tokens.
+     * Moreover, the offset of any given token is usually updated multiple times (roughly once for each node that contains
+     * it). This means that the offset of each token is updated O(AST depth) times.
+     * It would not be performant to store and update the offsets for each token independently, because the rule would end
+     * up having a time complexity of O(number of tokens * AST depth), which is quite slow for large files.
+     *
+     * Instead, the offset tree is represented as a collection of contiguous offset ranges in a file. For example, the following
+     * list could represent the state of the offset tree at a given point:
+     *
+     * - Tokens starting in the interval [0, 15) are aligned with the beginning of the file
+     * - Tokens starting in the interval [15, 30) are offset by 1 indent level from the `bar` token
+     * - Tokens starting in the interval [30, 43) are offset by 1 indent level from the `foo` token
+     * - Tokens starting in the interval [43, 820) are offset by 2 indent levels from the `bar` token
+     * - Tokens starting in the interval [820, ∞) are offset by 1 indent level from the `baz` token
+     *
+     * The `setDesiredOffsets` methods inserts ranges like the ones above. The third line above would be inserted by using:
+     * `setDesiredOffsets([30, 43], fooToken, 1);`
+     * @param {[number, number]} range A [start, end] pair. All tokens with range[0] <= token.start < range[1] will have the offset applied.
+     * @param {Token} fromToken The token that this is offset from
+     * @param {number} offset The desired indent level
+     * @param {boolean} force `true` if this offset should not use the normal collapsing behavior. This should almost always be false.
+     * @returns {void}
+     */
+    setDesiredOffsets(range, fromToken, offset, force) {
+
+        /*
+         * Offset ranges are stored as a collection of nodes, where each node maps a numeric key to an offset
+         * descriptor. The tree for the example above would have the following nodes:
+         *
+         * * key: 0, value: { offset: 0, from: null }
+         * * key: 15, value: { offset: 1, from: barToken }
+         * * key: 30, value: { offset: 1, from: fooToken }
+         * * key: 43, value: { offset: 2, from: barToken }
+         * * key: 820, value: { offset: 1, from: bazToken }
+         *
+         * To find the offset descriptor for any given token, one needs to find the node with the largest key
+         * which is <= token.start. To make this operation fast, the nodes are stored in a map indexed by key.
+         */
+
+        const descriptorToInsert = { offset, from: fromToken, force };
+
+        const descriptorAfterRange = this._indexMap.findLastNotAfter(range[1]);
+
+        const fromTokenIsInRange = fromToken && fromToken.range[0] >= range[0] && fromToken.range[1] <= range[1];
+        const fromTokenDescriptor = fromTokenIsInRange && this._getOffsetDescriptor(fromToken);
+
+        // First, remove any existing nodes in the range from the map.
+        this._indexMap.deleteRange(range[0] + 1, range[1]);
+
+        // Insert a new node into the map for this range
+        this._indexMap.insert(range[0], descriptorToInsert);
+
+        /*
+         * To avoid circular offset dependencies, keep the `fromToken` token mapped to whatever it was mapped to previously,
+         * even if it's in the current range.
+         */
+        if (fromTokenIsInRange) {
+            this._indexMap.insert(fromToken.range[0], fromTokenDescriptor);
+            this._indexMap.insert(fromToken.range[1], descriptorToInsert);
+        }
+
+        /*
+         * To avoid modifying the offset of tokens after the range, insert another node to keep the offset of the following
+         * tokens the same as it was before.
+         */
+        this._indexMap.insert(range[1], descriptorAfterRange);
+    }
+
+    /**
+     * Gets the desired indent of a token
+     * @param {Token} token The token
+     * @returns {string} The desired indent of the token
+     */
+    getDesiredIndent(token) {
+        if (!this._desiredIndentCache.has(token)) {
+
+            if (this._ignoredTokens.has(token)) {
+
+                /*
+                 * If the token is ignored, use the actual indent of the token as the desired indent.
+                 * This ensures that no errors are reported for this token.
+                 */
+                this._desiredIndentCache.set(
+                    token,
+                    this._tokenInfo.getTokenIndent(token)
+                );
+            } else if (this._lockedFirstTokens.has(token)) {
+                const firstToken = this._lockedFirstTokens.get(token);
+
+                this._desiredIndentCache.set(
+                    token,
+
+                    // (indentation for the first element's line)
+                    this.getDesiredIndent(this._tokenInfo.getFirstTokenOfLine(firstToken)) +
+
+                        // (space between the start of the first element's line and the first element)
+                        this._indentType.repeat(firstToken.loc.start.column - this._tokenInfo.getFirstTokenOfLine(firstToken).loc.start.column)
+                );
+            } else {
+                const offsetInfo = this._getOffsetDescriptor(token);
+                const offset = (
+                    offsetInfo.from &&
+                    offsetInfo.from.loc.start.line === token.loc.start.line &&
+                    !/^\s*?\n/u.test(token.value) &&
+                    !offsetInfo.force
+                ) ? 0 : offsetInfo.offset * this._indentSize;
+
+                this._desiredIndentCache.set(
+                    token,
+                    (offsetInfo.from ? this.getDesiredIndent(offsetInfo.from) : "") + this._indentType.repeat(offset)
+                );
+            }
+        }
+        return this._desiredIndentCache.get(token);
+    }
+
+    /**
+     * Ignores a token, preventing it from being reported.
+     * @param {Token} token The token
+     * @returns {void}
+     */
+    ignoreToken(token) {
+        if (this._tokenInfo.isFirstTokenOfLine(token)) {
+            this._ignoredTokens.add(token);
+        }
+    }
+
+    /**
+     * Gets the first token that the given token's indentation is dependent on
+     * @param {Token} token The token
+     * @returns {Token} The token that the given token depends on, or `null` if the given token is at the top level
+     */
+    getFirstDependency(token) {
+        return this._getOffsetDescriptor(token).from;
+    }
+}
+
+const ELEMENT_LIST_SCHEMA = {
+    oneOf: [
+        {
+            type: "integer",
+            minimum: 0
+        },
+        {
+            enum: ["first", "off"]
+        }
+    ]
+};
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent indentation",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/indent"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["tab"]
+                    },
+                    {
+                        type: "integer",
+                        minimum: 0
+                    }
+                ]
+            },
+            {
+                type: "object",
+                properties: {
+                    SwitchCase: {
+                        type: "integer",
+                        minimum: 0,
+                        default: 0
+                    },
+                    VariableDeclarator: {
+                        oneOf: [
+                            ELEMENT_LIST_SCHEMA,
+                            {
+                                type: "object",
+                                properties: {
+                                    var: ELEMENT_LIST_SCHEMA,
+                                    let: ELEMENT_LIST_SCHEMA,
+                                    const: ELEMENT_LIST_SCHEMA
+                                },
+                                additionalProperties: false
+                            }
+                        ]
+                    },
+                    outerIIFEBody: {
+                        oneOf: [
+                            {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            {
+                                enum: ["off"]
+                            }
+                        ]
+                    },
+                    MemberExpression: {
+                        oneOf: [
+                            {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            {
+                                enum: ["off"]
+                            }
+                        ]
+                    },
+                    FunctionDeclaration: {
+                        type: "object",
+                        properties: {
+                            parameters: ELEMENT_LIST_SCHEMA,
+                            body: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    },
+                    FunctionExpression: {
+                        type: "object",
+                        properties: {
+                            parameters: ELEMENT_LIST_SCHEMA,
+                            body: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    },
+                    StaticBlock: {
+                        type: "object",
+                        properties: {
+                            body: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    },
+                    CallExpression: {
+                        type: "object",
+                        properties: {
+                            arguments: ELEMENT_LIST_SCHEMA
+                        },
+                        additionalProperties: false
+                    },
+                    ArrayExpression: ELEMENT_LIST_SCHEMA,
+                    ObjectExpression: ELEMENT_LIST_SCHEMA,
+                    ImportDeclaration: ELEMENT_LIST_SCHEMA,
+                    flatTernaryExpressions: {
+                        type: "boolean",
+                        default: false
+                    },
+                    offsetTernaryExpressions: {
+                        type: "boolean",
+                        default: false
+                    },
+                    ignoredNodes: {
+                        type: "array",
+                        items: {
+                            type: "string",
+                            not: {
+                                pattern: ":exit$"
+                            }
+                        }
+                    },
+                    ignoreComments: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            wrongIndentation: "Expected indentation of {{expected}} but found {{actual}}."
+        }
+    },
+
+    create(context) {
+        const DEFAULT_VARIABLE_INDENT = 1;
+        const DEFAULT_PARAMETER_INDENT = 1;
+        const DEFAULT_FUNCTION_BODY_INDENT = 1;
+
+        let indentType = "space";
+        let indentSize = 4;
+        const options = {
+            SwitchCase: 0,
+            VariableDeclarator: {
+                var: DEFAULT_VARIABLE_INDENT,
+                let: DEFAULT_VARIABLE_INDENT,
+                const: DEFAULT_VARIABLE_INDENT
+            },
+            outerIIFEBody: 1,
+            FunctionDeclaration: {
+                parameters: DEFAULT_PARAMETER_INDENT,
+                body: DEFAULT_FUNCTION_BODY_INDENT
+            },
+            FunctionExpression: {
+                parameters: DEFAULT_PARAMETER_INDENT,
+                body: DEFAULT_FUNCTION_BODY_INDENT
+            },
+            StaticBlock: {
+                body: DEFAULT_FUNCTION_BODY_INDENT
+            },
+            CallExpression: {
+                arguments: DEFAULT_PARAMETER_INDENT
+            },
+            MemberExpression: 1,
+            ArrayExpression: 1,
+            ObjectExpression: 1,
+            ImportDeclaration: 1,
+            flatTernaryExpressions: false,
+            ignoredNodes: [],
+            ignoreComments: false
+        };
+
+        if (context.options.length) {
+            if (context.options[0] === "tab") {
+                indentSize = 1;
+                indentType = "tab";
+            } else {
+                indentSize = context.options[0];
+                indentType = "space";
+            }
+
+            if (context.options[1]) {
+                Object.assign(options, context.options[1]);
+
+                if (typeof options.VariableDeclarator === "number" || options.VariableDeclarator === "first") {
+                    options.VariableDeclarator = {
+                        var: options.VariableDeclarator,
+                        let: options.VariableDeclarator,
+                        const: options.VariableDeclarator
+                    };
+                }
+            }
+        }
+
+        const sourceCode = context.sourceCode;
+        const tokenInfo = new TokenInfo(sourceCode);
+        const offsets = new OffsetStorage(tokenInfo, indentSize, indentType === "space" ? " " : "\t", sourceCode.text.length);
+        const parameterParens = new WeakSet();
+
+        /**
+         * Creates an error message for a line, given the expected/actual indentation.
+         * @param {int} expectedAmount The expected amount of indentation characters for this line
+         * @param {int} actualSpaces The actual number of indentation spaces that were found on this line
+         * @param {int} actualTabs The actual number of indentation tabs that were found on this line
+         * @returns {string} An error message for this line
+         */
+        function createErrorMessageData(expectedAmount, actualSpaces, actualTabs) {
+            const expectedStatement = `${expectedAmount} ${indentType}${expectedAmount === 1 ? "" : "s"}`; // e.g. "2 tabs"
+            const foundSpacesWord = `space${actualSpaces === 1 ? "" : "s"}`; // e.g. "space"
+            const foundTabsWord = `tab${actualTabs === 1 ? "" : "s"}`; // e.g. "tabs"
+            let foundStatement;
+
+            if (actualSpaces > 0) {
+
+                /*
+                 * Abbreviate the message if the expected indentation is also spaces.
+                 * e.g. 'Expected 4 spaces but found 2' rather than 'Expected 4 spaces but found 2 spaces'
+                 */
+                foundStatement = indentType === "space" ? actualSpaces : `${actualSpaces} ${foundSpacesWord}`;
+            } else if (actualTabs > 0) {
+                foundStatement = indentType === "tab" ? actualTabs : `${actualTabs} ${foundTabsWord}`;
+            } else {
+                foundStatement = "0";
+            }
+            return {
+                expected: expectedStatement,
+                actual: foundStatement
+            };
+        }
+
+        /**
+         * Reports a given indent violation
+         * @param {Token} token Token violating the indent rule
+         * @param {string} neededIndent Expected indentation string
+         * @returns {void}
+         */
+        function report(token, neededIndent) {
+            const actualIndent = Array.from(tokenInfo.getTokenIndent(token));
+            const numSpaces = actualIndent.filter(char => char === " ").length;
+            const numTabs = actualIndent.filter(char => char === "\t").length;
+
+            context.report({
+                node: token,
+                messageId: "wrongIndentation",
+                data: createErrorMessageData(neededIndent.length, numSpaces, numTabs),
+                loc: {
+                    start: { line: token.loc.start.line, column: 0 },
+                    end: { line: token.loc.start.line, column: token.loc.start.column }
+                },
+                fix(fixer) {
+                    const range = [token.range[0] - token.loc.start.column, token.range[0]];
+                    const newText = neededIndent;
+
+                    return fixer.replaceTextRange(range, newText);
+                }
+            });
+        }
+
+        /**
+         * Checks if a token's indentation is correct
+         * @param {Token} token Token to examine
+         * @param {string} desiredIndent Desired indentation of the string
+         * @returns {boolean} `true` if the token's indentation is correct
+         */
+        function validateTokenIndent(token, desiredIndent) {
+            const indentation = tokenInfo.getTokenIndent(token);
+
+            return indentation === desiredIndent ||
+
+                // To avoid conflicts with no-mixed-spaces-and-tabs, don't report mixed spaces and tabs.
+                indentation.includes(" ") && indentation.includes("\t");
+        }
+
+        /**
+         * Check to see if the node is a file level IIFE
+         * @param {ASTNode} node The function node to check.
+         * @returns {boolean} True if the node is the outer IIFE
+         */
+        function isOuterIIFE(node) {
+
+            /*
+             * Verify that the node is an IIFE
+             */
+            if (!node.parent || node.parent.type !== "CallExpression" || node.parent.callee !== node) {
+                return false;
+            }
+
+            /*
+             * Navigate legal ancestors to determine whether this IIFE is outer.
+             * A "legal ancestor" is an expression or statement that causes the function to get executed immediately.
+             * For example, `!(function(){})()` is an outer IIFE even though it is preceded by a ! operator.
+             */
+            let statement = node.parent && node.parent.parent;
+
+            while (
+                statement.type === "UnaryExpression" && ["!", "~", "+", "-"].includes(statement.operator) ||
+                statement.type === "AssignmentExpression" ||
+                statement.type === "LogicalExpression" ||
+                statement.type === "SequenceExpression" ||
+                statement.type === "VariableDeclarator"
+            ) {
+                statement = statement.parent;
+            }
+
+            return (statement.type === "ExpressionStatement" || statement.type === "VariableDeclaration") && statement.parent.type === "Program";
+        }
+
+        /**
+         * Counts the number of linebreaks that follow the last non-whitespace character in a string
+         * @param {string} string The string to check
+         * @returns {number} The number of JavaScript linebreaks that follow the last non-whitespace character,
+         * or the total number of linebreaks if the string is all whitespace.
+         */
+        function countTrailingLinebreaks(string) {
+            const trailingWhitespace = string.match(/\s*$/u)[0];
+            const linebreakMatches = trailingWhitespace.match(astUtils.createGlobalLinebreakMatcher());
+
+            return linebreakMatches === null ? 0 : linebreakMatches.length;
+        }
+
+        /**
+         * Check indentation for lists of elements (arrays, objects, function params)
+         * @param {ASTNode[]} elements List of elements that should be offset
+         * @param {Token} startToken The start token of the list that element should be aligned against, e.g. '['
+         * @param {Token} endToken The end token of the list, e.g. ']'
+         * @param {number|string} offset The amount that the elements should be offset
+         * @returns {void}
+         */
+        function addElementListIndent(elements, startToken, endToken, offset) {
+
+            /**
+             * Gets the first token of a given element, including surrounding parentheses.
+             * @param {ASTNode} element A node in the `elements` list
+             * @returns {Token} The first token of this element
+             */
+            function getFirstToken(element) {
+                let token = sourceCode.getTokenBefore(element);
+
+                while (astUtils.isOpeningParenToken(token) && token !== startToken) {
+                    token = sourceCode.getTokenBefore(token);
+                }
+                return sourceCode.getTokenAfter(token);
+            }
+
+            // Run through all the tokens in the list, and offset them by one indent level (mainly for comments, other things will end up overridden)
+            offsets.setDesiredOffsets(
+                [startToken.range[1], endToken.range[0]],
+                startToken,
+                typeof offset === "number" ? offset : 1
+            );
+            offsets.setDesiredOffset(endToken, startToken, 0);
+
+            // If the preference is "first" but there is no first element (e.g. sparse arrays w/ empty first slot), fall back to 1 level.
+            if (offset === "first" && elements.length && !elements[0]) {
+                return;
+            }
+            elements.forEach((element, index) => {
+                if (!element) {
+
+                    // Skip holes in arrays
+                    return;
+                }
+                if (offset === "off") {
+
+                    // Ignore the first token of every element if the "off" option is used
+                    offsets.ignoreToken(getFirstToken(element));
+                }
+
+                // Offset the following elements correctly relative to the first element
+                if (index === 0) {
+                    return;
+                }
+                if (offset === "first" && tokenInfo.isFirstTokenOfLine(getFirstToken(element))) {
+                    offsets.matchOffsetOf(getFirstToken(elements[0]), getFirstToken(element));
+                } else {
+                    const previousElement = elements[index - 1];
+                    const firstTokenOfPreviousElement = previousElement && getFirstToken(previousElement);
+                    const previousElementLastToken = previousElement && sourceCode.getLastToken(previousElement);
+
+                    if (
+                        previousElement &&
+                        previousElementLastToken.loc.end.line - countTrailingLinebreaks(previousElementLastToken.value) > startToken.loc.end.line
+                    ) {
+                        offsets.setDesiredOffsets(
+                            [previousElement.range[1], element.range[1]],
+                            firstTokenOfPreviousElement,
+                            0
+                        );
+                    }
+                }
+            });
+        }
+
+        /**
+         * Check and decide whether to check for indentation for blockless nodes
+         * Scenarios are for or while statements without braces around them
+         * @param {ASTNode} node node to examine
+         * @returns {void}
+         */
+        function addBlocklessNodeIndent(node) {
+            if (node.type !== "BlockStatement") {
+                const lastParentToken = sourceCode.getTokenBefore(node, astUtils.isNotOpeningParenToken);
+
+                let firstBodyToken = sourceCode.getFirstToken(node);
+                let lastBodyToken = sourceCode.getLastToken(node);
+
+                while (
+                    astUtils.isOpeningParenToken(sourceCode.getTokenBefore(firstBodyToken)) &&
+                    astUtils.isClosingParenToken(sourceCode.getTokenAfter(lastBodyToken))
+                ) {
+                    firstBodyToken = sourceCode.getTokenBefore(firstBodyToken);
+                    lastBodyToken = sourceCode.getTokenAfter(lastBodyToken);
+                }
+
+                offsets.setDesiredOffsets([firstBodyToken.range[0], lastBodyToken.range[1]], lastParentToken, 1);
+            }
+        }
+
+        /**
+         * Checks the indentation for nodes that are like function calls (`CallExpression` and `NewExpression`)
+         * @param {ASTNode} node A CallExpression or NewExpression node
+         * @returns {void}
+         */
+        function addFunctionCallIndent(node) {
+            let openingParen;
+
+            if (node.arguments.length) {
+                openingParen = sourceCode.getFirstTokenBetween(node.callee, node.arguments[0], astUtils.isOpeningParenToken);
+            } else {
+                openingParen = sourceCode.getLastToken(node, 1);
+            }
+            const closingParen = sourceCode.getLastToken(node);
+
+            parameterParens.add(openingParen);
+            parameterParens.add(closingParen);
+
+            /*
+             * If `?.` token exists, set desired offset for that.
+             * This logic is copied from `MemberExpression`'s.
+             */
+            if (node.optional) {
+                const dotToken = sourceCode.getTokenAfter(node.callee, astUtils.isQuestionDotToken);
+                const calleeParenCount = sourceCode.getTokensBetween(node.callee, dotToken, { filter: astUtils.isClosingParenToken }).length;
+                const firstTokenOfCallee = calleeParenCount
+                    ? sourceCode.getTokenBefore(node.callee, { skip: calleeParenCount - 1 })
+                    : sourceCode.getFirstToken(node.callee);
+                const lastTokenOfCallee = sourceCode.getTokenBefore(dotToken);
+                const offsetBase = lastTokenOfCallee.loc.end.line === openingParen.loc.start.line
+                    ? lastTokenOfCallee
+                    : firstTokenOfCallee;
+
+                offsets.setDesiredOffset(dotToken, offsetBase, 1);
+            }
+
+            const offsetAfterToken = node.callee.type === "TaggedTemplateExpression" ? sourceCode.getFirstToken(node.callee.quasi) : openingParen;
+            const offsetToken = sourceCode.getTokenBefore(offsetAfterToken);
+
+            offsets.setDesiredOffset(openingParen, offsetToken, 0);
+
+            addElementListIndent(node.arguments, openingParen, closingParen, options.CallExpression.arguments);
+        }
+
+        /**
+         * Checks the indentation of parenthesized values, given a list of tokens in a program
+         * @param {Token[]} tokens A list of tokens
+         * @returns {void}
+         */
+        function addParensIndent(tokens) {
+            const parenStack = [];
+            const parenPairs = [];
+
+            for (let i = 0; i < tokens.length; i++) {
+                const nextToken = tokens[i];
+
+                if (astUtils.isOpeningParenToken(nextToken)) {
+                    parenStack.push(nextToken);
+                } else if (astUtils.isClosingParenToken(nextToken)) {
+                    parenPairs.push({ left: parenStack.pop(), right: nextToken });
+                }
+            }
+
+            for (let i = parenPairs.length - 1; i >= 0; i--) {
+                const leftParen = parenPairs[i].left;
+                const rightParen = parenPairs[i].right;
+
+                // We only want to handle parens around expressions, so exclude parentheses that are in function parameters and function call arguments.
+                if (!parameterParens.has(leftParen) && !parameterParens.has(rightParen)) {
+                    const parenthesizedTokens = new Set(sourceCode.getTokensBetween(leftParen, rightParen));
+
+                    parenthesizedTokens.forEach(token => {
+                        if (!parenthesizedTokens.has(offsets.getFirstDependency(token))) {
+                            offsets.setDesiredOffset(token, leftParen, 1);
+                        }
+                    });
+                }
+
+                offsets.setDesiredOffset(rightParen, leftParen, 0);
+            }
+        }
+
+        /**
+         * Ignore all tokens within an unknown node whose offset do not depend
+         * on another token's offset within the unknown node
+         * @param {ASTNode} node Unknown Node
+         * @returns {void}
+         */
+        function ignoreNode(node) {
+            const unknownNodeTokens = new Set(sourceCode.getTokens(node, { includeComments: true }));
+
+            unknownNodeTokens.forEach(token => {
+                if (!unknownNodeTokens.has(offsets.getFirstDependency(token))) {
+                    const firstTokenOfLine = tokenInfo.getFirstTokenOfLine(token);
+
+                    if (token === firstTokenOfLine) {
+                        offsets.ignoreToken(token);
+                    } else {
+                        offsets.setDesiredOffset(token, firstTokenOfLine, 0);
+                    }
+                }
+            });
+        }
+
+        /**
+         * Check whether the given token is on the first line of a statement.
+         * @param {Token} token The token to check.
+         * @param {ASTNode} leafNode The expression node that the token belongs directly.
+         * @returns {boolean} `true` if the token is on the first line of a statement.
+         */
+        function isOnFirstLineOfStatement(token, leafNode) {
+            let node = leafNode;
+
+            while (node.parent && !node.parent.type.endsWith("Statement") && !node.parent.type.endsWith("Declaration")) {
+                node = node.parent;
+            }
+            node = node.parent;
+
+            return !node || node.loc.start.line === token.loc.start.line;
+        }
+
+        /**
+         * Check whether there are any blank (whitespace-only) lines between
+         * two tokens on separate lines.
+         * @param {Token} firstToken The first token.
+         * @param {Token} secondToken The second token.
+         * @returns {boolean} `true` if the tokens are on separate lines and
+         *   there exists a blank line between them, `false` otherwise.
+         */
+        function hasBlankLinesBetween(firstToken, secondToken) {
+            const firstTokenLine = firstToken.loc.end.line;
+            const secondTokenLine = secondToken.loc.start.line;
+
+            if (firstTokenLine === secondTokenLine || firstTokenLine === secondTokenLine - 1) {
+                return false;
+            }
+
+            for (let line = firstTokenLine + 1; line < secondTokenLine; ++line) {
+                if (!tokenInfo.firstTokensByLineNumber.has(line)) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        const ignoredNodeFirstTokens = new Set();
+
+        const baseOffsetListeners = {
+            "ArrayExpression, ArrayPattern"(node) {
+                const openingBracket = sourceCode.getFirstToken(node);
+                const closingBracket = sourceCode.getTokenAfter([...node.elements].reverse().find(_ => _) || openingBracket, astUtils.isClosingBracketToken);
+
+                addElementListIndent(node.elements, openingBracket, closingBracket, options.ArrayExpression);
+            },
+
+            "ObjectExpression, ObjectPattern"(node) {
+                const openingCurly = sourceCode.getFirstToken(node);
+                const closingCurly = sourceCode.getTokenAfter(
+                    node.properties.length ? node.properties[node.properties.length - 1] : openingCurly,
+                    astUtils.isClosingBraceToken
+                );
+
+                addElementListIndent(node.properties, openingCurly, closingCurly, options.ObjectExpression);
+            },
+
+            ArrowFunctionExpression(node) {
+                const maybeOpeningParen = sourceCode.getFirstToken(node, { skip: node.async ? 1 : 0 });
+
+                if (astUtils.isOpeningParenToken(maybeOpeningParen)) {
+                    const openingParen = maybeOpeningParen;
+                    const closingParen = sourceCode.getTokenBefore(node.body, astUtils.isClosingParenToken);
+
+                    parameterParens.add(openingParen);
+                    parameterParens.add(closingParen);
+                    addElementListIndent(node.params, openingParen, closingParen, options.FunctionExpression.parameters);
+                }
+
+                addBlocklessNodeIndent(node.body);
+            },
+
+            AssignmentExpression(node) {
+                const operator = sourceCode.getFirstTokenBetween(node.left, node.right, token => token.value === node.operator);
+
+                offsets.setDesiredOffsets([operator.range[0], node.range[1]], sourceCode.getLastToken(node.left), 1);
+                offsets.ignoreToken(operator);
+                offsets.ignoreToken(sourceCode.getTokenAfter(operator));
+            },
+
+            "BinaryExpression, LogicalExpression"(node) {
+                const operator = sourceCode.getFirstTokenBetween(node.left, node.right, token => token.value === node.operator);
+
+                /*
+                 * For backwards compatibility, don't check BinaryExpression indents, e.g.
+                 * var foo = bar &&
+                 *                   baz;
+                 */
+
+                const tokenAfterOperator = sourceCode.getTokenAfter(operator);
+
+                offsets.ignoreToken(operator);
+                offsets.ignoreToken(tokenAfterOperator);
+                offsets.setDesiredOffset(tokenAfterOperator, operator, 0);
+            },
+
+            "BlockStatement, ClassBody"(node) {
+                let blockIndentLevel;
+
+                if (node.parent && isOuterIIFE(node.parent)) {
+                    blockIndentLevel = options.outerIIFEBody;
+                } else if (node.parent && (node.parent.type === "FunctionExpression" || node.parent.type === "ArrowFunctionExpression")) {
+                    blockIndentLevel = options.FunctionExpression.body;
+                } else if (node.parent && node.parent.type === "FunctionDeclaration") {
+                    blockIndentLevel = options.FunctionDeclaration.body;
+                } else {
+                    blockIndentLevel = 1;
+                }
+
+                /*
+                 * For blocks that aren't lone statements, ensure that the opening curly brace
+                 * is aligned with the parent.
+                 */
+                if (!astUtils.STATEMENT_LIST_PARENTS.has(node.parent.type)) {
+                    offsets.setDesiredOffset(sourceCode.getFirstToken(node), sourceCode.getFirstToken(node.parent), 0);
+                }
+
+                addElementListIndent(node.body, sourceCode.getFirstToken(node), sourceCode.getLastToken(node), blockIndentLevel);
+            },
+
+            CallExpression: addFunctionCallIndent,
+
+            "ClassDeclaration[superClass], ClassExpression[superClass]"(node) {
+                const classToken = sourceCode.getFirstToken(node);
+                const extendsToken = sourceCode.getTokenBefore(node.superClass, astUtils.isNotOpeningParenToken);
+
+                offsets.setDesiredOffsets([extendsToken.range[0], node.body.range[0]], classToken, 1);
+            },
+
+            ConditionalExpression(node) {
+                const firstToken = sourceCode.getFirstToken(node);
+
+                // `flatTernaryExpressions` option is for the following style:
+                // var a =
+                //     foo > 0 ? bar :
+                //     foo < 0 ? baz :
+                //     /*else*/ qiz ;
+                if (!options.flatTernaryExpressions ||
+                    !astUtils.isTokenOnSameLine(node.test, node.consequent) ||
+                    isOnFirstLineOfStatement(firstToken, node)
+                ) {
+                    const questionMarkToken = sourceCode.getFirstTokenBetween(node.test, node.consequent, token => token.type === "Punctuator" && token.value === "?");
+                    const colonToken = sourceCode.getFirstTokenBetween(node.consequent, node.alternate, token => token.type === "Punctuator" && token.value === ":");
+
+                    const firstConsequentToken = sourceCode.getTokenAfter(questionMarkToken);
+                    const lastConsequentToken = sourceCode.getTokenBefore(colonToken);
+                    const firstAlternateToken = sourceCode.getTokenAfter(colonToken);
+
+                    offsets.setDesiredOffset(questionMarkToken, firstToken, 1);
+                    offsets.setDesiredOffset(colonToken, firstToken, 1);
+
+                    offsets.setDesiredOffset(firstConsequentToken, firstToken, firstConsequentToken.type === "Punctuator" &&
+                        options.offsetTernaryExpressions ? 2 : 1);
+
+                    /*
+                     * The alternate and the consequent should usually have the same indentation.
+                     * If they share part of a line, align the alternate against the first token of the consequent.
+                     * This allows the alternate to be indented correctly in cases like this:
+                     * foo ? (
+                     *   bar
+                     * ) : ( // this '(' is aligned with the '(' above, so it's considered to be aligned with `foo`
+                     *   baz // as a result, `baz` is offset by 1 rather than 2
+                     * )
+                     */
+                    if (lastConsequentToken.loc.end.line === firstAlternateToken.loc.start.line) {
+                        offsets.setDesiredOffset(firstAlternateToken, firstConsequentToken, 0);
+                    } else {
+
+                        /**
+                         * If the alternate and consequent do not share part of a line, offset the alternate from the first
+                         * token of the conditional expression. For example:
+                         * foo ? bar
+                         *   : baz
+                         *
+                         * If `baz` were aligned with `bar` rather than being offset by 1 from `foo`, `baz` would end up
+                         * having no expected indentation.
+                         */
+                        offsets.setDesiredOffset(firstAlternateToken, firstToken, firstAlternateToken.type === "Punctuator" &&
+                            options.offsetTernaryExpressions ? 2 : 1);
+                    }
+                }
+            },
+
+            "DoWhileStatement, WhileStatement, ForInStatement, ForOfStatement, WithStatement": node => addBlocklessNodeIndent(node.body),
+
+            ExportNamedDeclaration(node) {
+                if (node.declaration === null) {
+                    const closingCurly = sourceCode.getLastToken(node, astUtils.isClosingBraceToken);
+
+                    // Indent the specifiers in `export {foo, bar, baz}`
+                    addElementListIndent(node.specifiers, sourceCode.getFirstToken(node, { skip: 1 }), closingCurly, 1);
+
+                    if (node.source) {
+
+                        // Indent everything after and including the `from` token in `export {foo, bar, baz} from 'qux'`
+                        offsets.setDesiredOffsets([closingCurly.range[1], node.range[1]], sourceCode.getFirstToken(node), 1);
+                    }
+                }
+            },
+
+            ForStatement(node) {
+                const forOpeningParen = sourceCode.getFirstToken(node, 1);
+
+                if (node.init) {
+                    offsets.setDesiredOffsets(node.init.range, forOpeningParen, 1);
+                }
+                if (node.test) {
+                    offsets.setDesiredOffsets(node.test.range, forOpeningParen, 1);
+                }
+                if (node.update) {
+                    offsets.setDesiredOffsets(node.update.range, forOpeningParen, 1);
+                }
+                addBlocklessNodeIndent(node.body);
+            },
+
+            "FunctionDeclaration, FunctionExpression"(node) {
+                const closingParen = sourceCode.getTokenBefore(node.body);
+                const openingParen = sourceCode.getTokenBefore(node.params.length ? node.params[0] : closingParen);
+
+                parameterParens.add(openingParen);
+                parameterParens.add(closingParen);
+                addElementListIndent(node.params, openingParen, closingParen, options[node.type].parameters);
+            },
+
+            IfStatement(node) {
+                addBlocklessNodeIndent(node.consequent);
+                if (node.alternate) {
+                    addBlocklessNodeIndent(node.alternate);
+                }
+            },
+
+            /*
+             * For blockless nodes with semicolon-first style, don't indent the semicolon.
+             * e.g.
+             * if (foo)
+             *     bar()
+             * ; [1, 2, 3].map(foo)
+             *
+             * Traversal into the node sets indentation of the semicolon, so we need to override it on exit.
+             */
+            ":matches(DoWhileStatement, ForStatement, ForInStatement, ForOfStatement, IfStatement, WhileStatement, WithStatement):exit"(node) {
+                let nodesToCheck;
+
+                if (node.type === "IfStatement") {
+                    nodesToCheck = [node.consequent];
+                    if (node.alternate) {
+                        nodesToCheck.push(node.alternate);
+                    }
+                } else {
+                    nodesToCheck = [node.body];
+                }
+
+                for (const nodeToCheck of nodesToCheck) {
+                    const lastToken = sourceCode.getLastToken(nodeToCheck);
+
+                    if (astUtils.isSemicolonToken(lastToken)) {
+                        const tokenBeforeLast = sourceCode.getTokenBefore(lastToken);
+                        const tokenAfterLast = sourceCode.getTokenAfter(lastToken);
+
+                        // override indentation of `;` only if its line looks like a semicolon-first style line
+                        if (
+                            !astUtils.isTokenOnSameLine(tokenBeforeLast, lastToken) &&
+                            tokenAfterLast &&
+                            astUtils.isTokenOnSameLine(lastToken, tokenAfterLast)
+                        ) {
+                            offsets.setDesiredOffset(
+                                lastToken,
+                                sourceCode.getFirstToken(node),
+                                0
+                            );
+                        }
+                    }
+                }
+            },
+
+            ImportDeclaration(node) {
+                if (node.specifiers.some(specifier => specifier.type === "ImportSpecifier")) {
+                    const openingCurly = sourceCode.getFirstToken(node, astUtils.isOpeningBraceToken);
+                    const closingCurly = sourceCode.getLastToken(node, astUtils.isClosingBraceToken);
+
+                    addElementListIndent(node.specifiers.filter(specifier => specifier.type === "ImportSpecifier"), openingCurly, closingCurly, options.ImportDeclaration);
+                }
+
+                const fromToken = sourceCode.getLastToken(node, token => token.type === "Identifier" && token.value === "from");
+                const sourceToken = sourceCode.getLastToken(node, token => token.type === "String");
+                const semiToken = sourceCode.getLastToken(node, token => token.type === "Punctuator" && token.value === ";");
+
+                if (fromToken) {
+                    const end = semiToken && semiToken.range[1] === sourceToken.range[1] ? node.range[1] : sourceToken.range[1];
+
+                    offsets.setDesiredOffsets([fromToken.range[0], end], sourceCode.getFirstToken(node), 1);
+                }
+            },
+
+            ImportExpression(node) {
+                const openingParen = sourceCode.getFirstToken(node, 1);
+                const closingParen = sourceCode.getLastToken(node);
+
+                parameterParens.add(openingParen);
+                parameterParens.add(closingParen);
+                offsets.setDesiredOffset(openingParen, sourceCode.getTokenBefore(openingParen), 0);
+
+                addElementListIndent([node.source], openingParen, closingParen, options.CallExpression.arguments);
+            },
+
+            "MemberExpression, JSXMemberExpression, MetaProperty"(node) {
+                const object = node.type === "MetaProperty" ? node.meta : node.object;
+                const firstNonObjectToken = sourceCode.getFirstTokenBetween(object, node.property, astUtils.isNotClosingParenToken);
+                const secondNonObjectToken = sourceCode.getTokenAfter(firstNonObjectToken);
+
+                const objectParenCount = sourceCode.getTokensBetween(object, node.property, { filter: astUtils.isClosingParenToken }).length;
+                const firstObjectToken = objectParenCount
+                    ? sourceCode.getTokenBefore(object, { skip: objectParenCount - 1 })
+                    : sourceCode.getFirstToken(object);
+                const lastObjectToken = sourceCode.getTokenBefore(firstNonObjectToken);
+                const firstPropertyToken = node.computed ? firstNonObjectToken : secondNonObjectToken;
+
+                if (node.computed) {
+
+                    // For computed MemberExpressions, match the closing bracket with the opening bracket.
+                    offsets.setDesiredOffset(sourceCode.getLastToken(node), firstNonObjectToken, 0);
+                    offsets.setDesiredOffsets(node.property.range, firstNonObjectToken, 1);
+                }
+
+                /*
+                 * If the object ends on the same line that the property starts, match against the last token
+                 * of the object, to ensure that the MemberExpression is not indented.
+                 *
+                 * Otherwise, match against the first token of the object, e.g.
+                 * foo
+                 *   .bar
+                 *   .baz // <-- offset by 1 from `foo`
+                 */
+                const offsetBase = lastObjectToken.loc.end.line === firstPropertyToken.loc.start.line
+                    ? lastObjectToken
+                    : firstObjectToken;
+
+                if (typeof options.MemberExpression === "number") {
+
+                    // Match the dot (for non-computed properties) or the opening bracket (for computed properties) against the object.
+                    offsets.setDesiredOffset(firstNonObjectToken, offsetBase, options.MemberExpression);
+
+                    /*
+                     * For computed MemberExpressions, match the first token of the property against the opening bracket.
+                     * Otherwise, match the first token of the property against the object.
+                     */
+                    offsets.setDesiredOffset(secondNonObjectToken, node.computed ? firstNonObjectToken : offsetBase, options.MemberExpression);
+                } else {
+
+                    // If the MemberExpression option is off, ignore the dot and the first token of the property.
+                    offsets.ignoreToken(firstNonObjectToken);
+                    offsets.ignoreToken(secondNonObjectToken);
+
+                    // To ignore the property indentation, ensure that the property tokens depend on the ignored tokens.
+                    offsets.setDesiredOffset(firstNonObjectToken, offsetBase, 0);
+                    offsets.setDesiredOffset(secondNonObjectToken, firstNonObjectToken, 0);
+                }
+            },
+
+            NewExpression(node) {
+
+                // Only indent the arguments if the NewExpression has parens (e.g. `new Foo(bar)` or `new Foo()`, but not `new Foo`
+                if (node.arguments.length > 0 ||
+                        astUtils.isClosingParenToken(sourceCode.getLastToken(node)) &&
+                        astUtils.isOpeningParenToken(sourceCode.getLastToken(node, 1))) {
+                    addFunctionCallIndent(node);
+                }
+            },
+
+            Property(node) {
+                if (!node.shorthand && !node.method && node.kind === "init") {
+                    const colon = sourceCode.getFirstTokenBetween(node.key, node.value, astUtils.isColonToken);
+
+                    offsets.ignoreToken(sourceCode.getTokenAfter(colon));
+                }
+            },
+
+            PropertyDefinition(node) {
+                const firstToken = sourceCode.getFirstToken(node);
+                const maybeSemicolonToken = sourceCode.getLastToken(node);
+                let keyLastToken = null;
+
+                // Indent key.
+                if (node.computed) {
+                    const bracketTokenL = sourceCode.getTokenBefore(node.key, astUtils.isOpeningBracketToken);
+                    const bracketTokenR = keyLastToken = sourceCode.getTokenAfter(node.key, astUtils.isClosingBracketToken);
+                    const keyRange = [bracketTokenL.range[1], bracketTokenR.range[0]];
+
+                    if (bracketTokenL !== firstToken) {
+                        offsets.setDesiredOffset(bracketTokenL, firstToken, 0);
+                    }
+                    offsets.setDesiredOffsets(keyRange, bracketTokenL, 1);
+                    offsets.setDesiredOffset(bracketTokenR, bracketTokenL, 0);
+                } else {
+                    const idToken = keyLastToken = sourceCode.getFirstToken(node.key);
+
+                    if (idToken !== firstToken) {
+                        offsets.setDesiredOffset(idToken, firstToken, 1);
+                    }
+                }
+
+                // Indent initializer.
+                if (node.value) {
+                    const eqToken = sourceCode.getTokenBefore(node.value, astUtils.isEqToken);
+                    const valueToken = sourceCode.getTokenAfter(eqToken);
+
+                    offsets.setDesiredOffset(eqToken, keyLastToken, 1);
+                    offsets.setDesiredOffset(valueToken, eqToken, 1);
+                    if (astUtils.isSemicolonToken(maybeSemicolonToken)) {
+                        offsets.setDesiredOffset(maybeSemicolonToken, eqToken, 1);
+                    }
+                } else if (astUtils.isSemicolonToken(maybeSemicolonToken)) {
+                    offsets.setDesiredOffset(maybeSemicolonToken, keyLastToken, 1);
+                }
+            },
+
+            StaticBlock(node) {
+                const openingCurly = sourceCode.getFirstToken(node, { skip: 1 }); // skip the `static` token
+                const closingCurly = sourceCode.getLastToken(node);
+
+                addElementListIndent(node.body, openingCurly, closingCurly, options.StaticBlock.body);
+            },
+
+            SwitchStatement(node) {
+                const openingCurly = sourceCode.getTokenAfter(node.discriminant, astUtils.isOpeningBraceToken);
+                const closingCurly = sourceCode.getLastToken(node);
+
+                offsets.setDesiredOffsets([openingCurly.range[1], closingCurly.range[0]], openingCurly, options.SwitchCase);
+
+                if (node.cases.length) {
+                    sourceCode.getTokensBetween(
+                        node.cases[node.cases.length - 1],
+                        closingCurly,
+                        { includeComments: true, filter: astUtils.isCommentToken }
+                    ).forEach(token => offsets.ignoreToken(token));
+                }
+            },
+
+            SwitchCase(node) {
+                if (!(node.consequent.length === 1 && node.consequent[0].type === "BlockStatement")) {
+                    const caseKeyword = sourceCode.getFirstToken(node);
+                    const tokenAfterCurrentCase = sourceCode.getTokenAfter(node);
+
+                    offsets.setDesiredOffsets([caseKeyword.range[1], tokenAfterCurrentCase.range[0]], caseKeyword, 1);
+                }
+            },
+
+            TemplateLiteral(node) {
+                node.expressions.forEach((expression, index) => {
+                    const previousQuasi = node.quasis[index];
+                    const nextQuasi = node.quasis[index + 1];
+                    const tokenToAlignFrom = previousQuasi.loc.start.line === previousQuasi.loc.end.line
+                        ? sourceCode.getFirstToken(previousQuasi)
+                        : null;
+
+                    offsets.setDesiredOffsets([previousQuasi.range[1], nextQuasi.range[0]], tokenToAlignFrom, 1);
+                    offsets.setDesiredOffset(sourceCode.getFirstToken(nextQuasi), tokenToAlignFrom, 0);
+                });
+            },
+
+            VariableDeclaration(node) {
+                let variableIndent = Object.prototype.hasOwnProperty.call(options.VariableDeclarator, node.kind)
+                    ? options.VariableDeclarator[node.kind]
+                    : DEFAULT_VARIABLE_INDENT;
+
+                const firstToken = sourceCode.getFirstToken(node),
+                    lastToken = sourceCode.getLastToken(node);
+
+                if (options.VariableDeclarator[node.kind] === "first") {
+                    if (node.declarations.length > 1) {
+                        addElementListIndent(
+                            node.declarations,
+                            firstToken,
+                            lastToken,
+                            "first"
+                        );
+                        return;
+                    }
+
+                    variableIndent = DEFAULT_VARIABLE_INDENT;
+                }
+
+                if (node.declarations[node.declarations.length - 1].loc.start.line > node.loc.start.line) {
+
+                    /*
+                     * VariableDeclarator indentation is a bit different from other forms of indentation, in that the
+                     * indentation of an opening bracket sometimes won't match that of a closing bracket. For example,
+                     * the following indentations are correct:
+                     *
+                     * var foo = {
+                     *   ok: true
+                     * };
+                     *
+                     * var foo = {
+                     *     ok: true,
+                     *   },
+                     *   bar = 1;
+                     *
+                     * Account for when exiting the AST (after indentations have already been set for the nodes in
+                     * the declaration) by manually increasing the indentation level of the tokens in this declarator
+                     * on the same line as the start of the declaration, provided that there are declarators that
+                     * follow this one.
+                     */
+                    offsets.setDesiredOffsets(node.range, firstToken, variableIndent, true);
+                } else {
+                    offsets.setDesiredOffsets(node.range, firstToken, variableIndent);
+                }
+
+                if (astUtils.isSemicolonToken(lastToken)) {
+                    offsets.ignoreToken(lastToken);
+                }
+            },
+
+            VariableDeclarator(node) {
+                if (node.init) {
+                    const equalOperator = sourceCode.getTokenBefore(node.init, astUtils.isNotOpeningParenToken);
+                    const tokenAfterOperator = sourceCode.getTokenAfter(equalOperator);
+
+                    offsets.ignoreToken(equalOperator);
+                    offsets.ignoreToken(tokenAfterOperator);
+                    offsets.setDesiredOffsets([tokenAfterOperator.range[0], node.range[1]], equalOperator, 1);
+                    offsets.setDesiredOffset(equalOperator, sourceCode.getLastToken(node.id), 0);
+                }
+            },
+
+            "JSXAttribute[value]"(node) {
+                const equalsToken = sourceCode.getFirstTokenBetween(node.name, node.value, token => token.type === "Punctuator" && token.value === "=");
+
+                offsets.setDesiredOffsets([equalsToken.range[0], node.value.range[1]], sourceCode.getFirstToken(node.name), 1);
+            },
+
+            JSXElement(node) {
+                if (node.closingElement) {
+                    addElementListIndent(node.children, sourceCode.getFirstToken(node.openingElement), sourceCode.getFirstToken(node.closingElement), 1);
+                }
+            },
+
+            JSXOpeningElement(node) {
+                const firstToken = sourceCode.getFirstToken(node);
+                let closingToken;
+
+                if (node.selfClosing) {
+                    closingToken = sourceCode.getLastToken(node, { skip: 1 });
+                    offsets.setDesiredOffset(sourceCode.getLastToken(node), closingToken, 0);
+                } else {
+                    closingToken = sourceCode.getLastToken(node);
+                }
+                offsets.setDesiredOffsets(node.name.range, sourceCode.getFirstToken(node));
+                addElementListIndent(node.attributes, firstToken, closingToken, 1);
+            },
+
+            JSXClosingElement(node) {
+                const firstToken = sourceCode.getFirstToken(node);
+
+                offsets.setDesiredOffsets(node.name.range, firstToken, 1);
+            },
+
+            JSXFragment(node) {
+                const firstOpeningToken = sourceCode.getFirstToken(node.openingFragment);
+                const firstClosingToken = sourceCode.getFirstToken(node.closingFragment);
+
+                addElementListIndent(node.children, firstOpeningToken, firstClosingToken, 1);
+            },
+
+            JSXOpeningFragment(node) {
+                const firstToken = sourceCode.getFirstToken(node);
+                const closingToken = sourceCode.getLastToken(node);
+
+                offsets.setDesiredOffsets(node.range, firstToken, 1);
+                offsets.matchOffsetOf(firstToken, closingToken);
+            },
+
+            JSXClosingFragment(node) {
+                const firstToken = sourceCode.getFirstToken(node);
+                const slashToken = sourceCode.getLastToken(node, { skip: 1 });
+                const closingToken = sourceCode.getLastToken(node);
+                const tokenToMatch = astUtils.isTokenOnSameLine(slashToken, closingToken) ? slashToken : closingToken;
+
+                offsets.setDesiredOffsets(node.range, firstToken, 1);
+                offsets.matchOffsetOf(firstToken, tokenToMatch);
+            },
+
+            JSXExpressionContainer(node) {
+                const openingCurly = sourceCode.getFirstToken(node);
+                const closingCurly = sourceCode.getLastToken(node);
+
+                offsets.setDesiredOffsets(
+                    [openingCurly.range[1], closingCurly.range[0]],
+                    openingCurly,
+                    1
+                );
+            },
+
+            JSXSpreadAttribute(node) {
+                const openingCurly = sourceCode.getFirstToken(node);
+                const closingCurly = sourceCode.getLastToken(node);
+
+                offsets.setDesiredOffsets(
+                    [openingCurly.range[1], closingCurly.range[0]],
+                    openingCurly,
+                    1
+                );
+            },
+
+            "*"(node) {
+                const firstToken = sourceCode.getFirstToken(node);
+
+                // Ensure that the children of every node are indented at least as much as the first token.
+                if (firstToken && !ignoredNodeFirstTokens.has(firstToken)) {
+                    offsets.setDesiredOffsets(node.range, firstToken, 0);
+                }
+            }
+        };
+
+        const listenerCallQueue = [];
+
+        /*
+         * To ignore the indentation of a node:
+         * 1. Don't call the node's listener when entering it (if it has a listener)
+         * 2. Don't set any offsets against the first token of the node.
+         * 3. Call `ignoreNode` on the node sometime after exiting it and before validating offsets.
+         */
+        const offsetListeners = {};
+
+        for (const [selector, listener] of Object.entries(baseOffsetListeners)) {
+
+            /*
+             * Offset listener calls are deferred until traversal is finished, and are called as
+             * part of the final `Program:exit` listener. This is necessary because a node might
+             * be matched by multiple selectors.
+             *
+             * Example: Suppose there is an offset listener for `Identifier`, and the user has
+             * specified in configuration that `MemberExpression > Identifier` should be ignored.
+             * Due to selector specificity rules, the `Identifier` listener will get called first. However,
+             * if a given Identifier node is supposed to be ignored, then the `Identifier` offset listener
+             * should not have been called at all. Without doing extra selector matching, we don't know
+             * whether the Identifier matches the `MemberExpression > Identifier` selector until the
+             * `MemberExpression > Identifier` listener is called.
+             *
+             * To avoid this, the `Identifier` listener isn't called until traversal finishes and all
+             * ignored nodes are known.
+             */
+            offsetListeners[selector] = node => listenerCallQueue.push({ listener, node });
+        }
+
+        // For each ignored node selector, set up a listener to collect it into the `ignoredNodes` set.
+        const ignoredNodes = new Set();
+
+        /**
+         * Ignores a node
+         * @param {ASTNode} node The node to ignore
+         * @returns {void}
+         */
+        function addToIgnoredNodes(node) {
+            ignoredNodes.add(node);
+            ignoredNodeFirstTokens.add(sourceCode.getFirstToken(node));
+        }
+
+        const ignoredNodeListeners = options.ignoredNodes.reduce(
+            (listeners, ignoredSelector) => Object.assign(listeners, { [ignoredSelector]: addToIgnoredNodes }),
+            {}
+        );
+
+        /*
+         * Join the listeners, and add a listener to verify that all tokens actually have the correct indentation
+         * at the end.
+         *
+         * Using Object.assign will cause some offset listeners to be overwritten if the same selector also appears
+         * in `ignoredNodeListeners`. This isn't a problem because all of the matching nodes will be ignored,
+         * so those listeners wouldn't be called anyway.
+         */
+        return Object.assign(
+            offsetListeners,
+            ignoredNodeListeners,
+            {
+                "*:exit"(node) {
+
+                    // If a node's type is nonstandard, we can't tell how its children should be offset, so ignore it.
+                    if (!KNOWN_NODES.has(node.type)) {
+                        addToIgnoredNodes(node);
+                    }
+                },
+                "Program:exit"() {
+
+                    // If ignoreComments option is enabled, ignore all comment tokens.
+                    if (options.ignoreComments) {
+                        sourceCode.getAllComments()
+                            .forEach(comment => offsets.ignoreToken(comment));
+                    }
+
+                    // Invoke the queued offset listeners for the nodes that aren't ignored.
+                    for (let i = 0; i < listenerCallQueue.length; i++) {
+                        const nodeInfo = listenerCallQueue[i];
+
+                        if (!ignoredNodes.has(nodeInfo.node)) {
+                            nodeInfo.listener(nodeInfo.node);
+                        }
+                    }
+
+                    // Update the offsets for ignored nodes to prevent their child tokens from being reported.
+                    ignoredNodes.forEach(ignoreNode);
+
+                    addParensIndent(sourceCode.ast.tokens);
+
+                    /*
+                     * Create a Map from (tokenOrComment) => (precedingToken).
+                     * This is necessary because sourceCode.getTokenBefore does not handle a comment as an argument correctly.
+                     */
+                    const precedingTokens = new WeakMap();
+
+                    for (let i = 0; i < sourceCode.ast.comments.length; i++) {
+                        const comment = sourceCode.ast.comments[i];
+
+                        const tokenOrCommentBefore = sourceCode.getTokenBefore(comment, { includeComments: true });
+                        const hasToken = precedingTokens.has(tokenOrCommentBefore) ? precedingTokens.get(tokenOrCommentBefore) : tokenOrCommentBefore;
+
+                        precedingTokens.set(comment, hasToken);
+                    }
+
+                    for (let i = 1; i < sourceCode.lines.length + 1; i++) {
+
+                        if (!tokenInfo.firstTokensByLineNumber.has(i)) {
+
+                            // Don't check indentation on blank lines
+                            continue;
+                        }
+
+                        const firstTokenOfLine = tokenInfo.firstTokensByLineNumber.get(i);
+
+                        if (firstTokenOfLine.loc.start.line !== i) {
+
+                            // Don't check the indentation of multi-line tokens (e.g. template literals or block comments) twice.
+                            continue;
+                        }
+
+                        if (astUtils.isCommentToken(firstTokenOfLine)) {
+                            const tokenBefore = precedingTokens.get(firstTokenOfLine);
+                            const tokenAfter = tokenBefore ? sourceCode.getTokenAfter(tokenBefore) : sourceCode.ast.tokens[0];
+                            const mayAlignWithBefore = tokenBefore && !hasBlankLinesBetween(tokenBefore, firstTokenOfLine);
+                            const mayAlignWithAfter = tokenAfter && !hasBlankLinesBetween(firstTokenOfLine, tokenAfter);
+
+                            /*
+                             * If a comment precedes a line that begins with a semicolon token, align to that token, i.e.
+                             *
+                             * let foo
+                             * // comment
+                             * ;(async () => {})()
+                             */
+                            if (tokenAfter && astUtils.isSemicolonToken(tokenAfter) && !astUtils.isTokenOnSameLine(firstTokenOfLine, tokenAfter)) {
+                                offsets.setDesiredOffset(firstTokenOfLine, tokenAfter, 0);
+                            }
+
+                            // If a comment matches the expected indentation of the token immediately before or after, don't report it.
+                            if (
+                                mayAlignWithBefore && validateTokenIndent(firstTokenOfLine, offsets.getDesiredIndent(tokenBefore)) ||
+                                mayAlignWithAfter && validateTokenIndent(firstTokenOfLine, offsets.getDesiredIndent(tokenAfter))
+                            ) {
+                                continue;
+                            }
+                        }
+
+                        // If the token matches the expected indentation, don't report it.
+                        if (validateTokenIndent(firstTokenOfLine, offsets.getDesiredIndent(firstTokenOfLine))) {
+                            continue;
+                        }
+
+                        // Otherwise, report the token/comment.
+                        report(firstTokenOfLine, offsets.getDesiredIndent(firstTokenOfLine));
+                    }
+                }
+            }
+        );
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/index.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,306 @@
+/**
+ * @fileoverview Collects the built-in rules into a map structure so that they can be imported all at once and without
+ * using the file-system directly.
+ * @author Peter (Somogyvari) Metz
+ */
+
+"use strict";
+
+/* eslint sort-keys: ["error", "asc"] -- More readable for long list */
+
+const { LazyLoadingRuleMap } = require("./utils/lazy-loading-rule-map");
+
+/** @type {Map<string, import("../shared/types").Rule>} */
+module.exports = new LazyLoadingRuleMap(Object.entries({
+    "accessor-pairs": () => require("./accessor-pairs"),
+    "array-bracket-newline": () => require("./array-bracket-newline"),
+    "array-bracket-spacing": () => require("./array-bracket-spacing"),
+    "array-callback-return": () => require("./array-callback-return"),
+    "array-element-newline": () => require("./array-element-newline"),
+    "arrow-body-style": () => require("./arrow-body-style"),
+    "arrow-parens": () => require("./arrow-parens"),
+    "arrow-spacing": () => require("./arrow-spacing"),
+    "block-scoped-var": () => require("./block-scoped-var"),
+    "block-spacing": () => require("./block-spacing"),
+    "brace-style": () => require("./brace-style"),
+    "callback-return": () => require("./callback-return"),
+    camelcase: () => require("./camelcase"),
+    "capitalized-comments": () => require("./capitalized-comments"),
+    "class-methods-use-this": () => require("./class-methods-use-this"),
+    "comma-dangle": () => require("./comma-dangle"),
+    "comma-spacing": () => require("./comma-spacing"),
+    "comma-style": () => require("./comma-style"),
+    complexity: () => require("./complexity"),
+    "computed-property-spacing": () => require("./computed-property-spacing"),
+    "consistent-return": () => require("./consistent-return"),
+    "consistent-this": () => require("./consistent-this"),
+    "constructor-super": () => require("./constructor-super"),
+    curly: () => require("./curly"),
+    "default-case": () => require("./default-case"),
+    "default-case-last": () => require("./default-case-last"),
+    "default-param-last": () => require("./default-param-last"),
+    "dot-location": () => require("./dot-location"),
+    "dot-notation": () => require("./dot-notation"),
+    "eol-last": () => require("./eol-last"),
+    eqeqeq: () => require("./eqeqeq"),
+    "for-direction": () => require("./for-direction"),
+    "func-call-spacing": () => require("./func-call-spacing"),
+    "func-name-matching": () => require("./func-name-matching"),
+    "func-names": () => require("./func-names"),
+    "func-style": () => require("./func-style"),
+    "function-call-argument-newline": () => require("./function-call-argument-newline"),
+    "function-paren-newline": () => require("./function-paren-newline"),
+    "generator-star-spacing": () => require("./generator-star-spacing"),
+    "getter-return": () => require("./getter-return"),
+    "global-require": () => require("./global-require"),
+    "grouped-accessor-pairs": () => require("./grouped-accessor-pairs"),
+    "guard-for-in": () => require("./guard-for-in"),
+    "handle-callback-err": () => require("./handle-callback-err"),
+    "id-blacklist": () => require("./id-blacklist"),
+    "id-denylist": () => require("./id-denylist"),
+    "id-length": () => require("./id-length"),
+    "id-match": () => require("./id-match"),
+    "implicit-arrow-linebreak": () => require("./implicit-arrow-linebreak"),
+    indent: () => require("./indent"),
+    "indent-legacy": () => require("./indent-legacy"),
+    "init-declarations": () => require("./init-declarations"),
+    "jsx-quotes": () => require("./jsx-quotes"),
+    "key-spacing": () => require("./key-spacing"),
+    "keyword-spacing": () => require("./keyword-spacing"),
+    "line-comment-position": () => require("./line-comment-position"),
+    "linebreak-style": () => require("./linebreak-style"),
+    "lines-around-comment": () => require("./lines-around-comment"),
+    "lines-around-directive": () => require("./lines-around-directive"),
+    "lines-between-class-members": () => require("./lines-between-class-members"),
+    "logical-assignment-operators": () => require("./logical-assignment-operators"),
+    "max-classes-per-file": () => require("./max-classes-per-file"),
+    "max-depth": () => require("./max-depth"),
+    "max-len": () => require("./max-len"),
+    "max-lines": () => require("./max-lines"),
+    "max-lines-per-function": () => require("./max-lines-per-function"),
+    "max-nested-callbacks": () => require("./max-nested-callbacks"),
+    "max-params": () => require("./max-params"),
+    "max-statements": () => require("./max-statements"),
+    "max-statements-per-line": () => require("./max-statements-per-line"),
+    "multiline-comment-style": () => require("./multiline-comment-style"),
+    "multiline-ternary": () => require("./multiline-ternary"),
+    "new-cap": () => require("./new-cap"),
+    "new-parens": () => require("./new-parens"),
+    "newline-after-var": () => require("./newline-after-var"),
+    "newline-before-return": () => require("./newline-before-return"),
+    "newline-per-chained-call": () => require("./newline-per-chained-call"),
+    "no-alert": () => require("./no-alert"),
+    "no-array-constructor": () => require("./no-array-constructor"),
+    "no-async-promise-executor": () => require("./no-async-promise-executor"),
+    "no-await-in-loop": () => require("./no-await-in-loop"),
+    "no-bitwise": () => require("./no-bitwise"),
+    "no-buffer-constructor": () => require("./no-buffer-constructor"),
+    "no-caller": () => require("./no-caller"),
+    "no-case-declarations": () => require("./no-case-declarations"),
+    "no-catch-shadow": () => require("./no-catch-shadow"),
+    "no-class-assign": () => require("./no-class-assign"),
+    "no-compare-neg-zero": () => require("./no-compare-neg-zero"),
+    "no-cond-assign": () => require("./no-cond-assign"),
+    "no-confusing-arrow": () => require("./no-confusing-arrow"),
+    "no-console": () => require("./no-console"),
+    "no-const-assign": () => require("./no-const-assign"),
+    "no-constant-binary-expression": () => require("./no-constant-binary-expression"),
+    "no-constant-condition": () => require("./no-constant-condition"),
+    "no-constructor-return": () => require("./no-constructor-return"),
+    "no-continue": () => require("./no-continue"),
+    "no-control-regex": () => require("./no-control-regex"),
+    "no-debugger": () => require("./no-debugger"),
+    "no-delete-var": () => require("./no-delete-var"),
+    "no-div-regex": () => require("./no-div-regex"),
+    "no-dupe-args": () => require("./no-dupe-args"),
+    "no-dupe-class-members": () => require("./no-dupe-class-members"),
+    "no-dupe-else-if": () => require("./no-dupe-else-if"),
+    "no-dupe-keys": () => require("./no-dupe-keys"),
+    "no-duplicate-case": () => require("./no-duplicate-case"),
+    "no-duplicate-imports": () => require("./no-duplicate-imports"),
+    "no-else-return": () => require("./no-else-return"),
+    "no-empty": () => require("./no-empty"),
+    "no-empty-character-class": () => require("./no-empty-character-class"),
+    "no-empty-function": () => require("./no-empty-function"),
+    "no-empty-pattern": () => require("./no-empty-pattern"),
+    "no-empty-static-block": () => require("./no-empty-static-block"),
+    "no-eq-null": () => require("./no-eq-null"),
+    "no-eval": () => require("./no-eval"),
+    "no-ex-assign": () => require("./no-ex-assign"),
+    "no-extend-native": () => require("./no-extend-native"),
+    "no-extra-bind": () => require("./no-extra-bind"),
+    "no-extra-boolean-cast": () => require("./no-extra-boolean-cast"),
+    "no-extra-label": () => require("./no-extra-label"),
+    "no-extra-parens": () => require("./no-extra-parens"),
+    "no-extra-semi": () => require("./no-extra-semi"),
+    "no-fallthrough": () => require("./no-fallthrough"),
+    "no-floating-decimal": () => require("./no-floating-decimal"),
+    "no-func-assign": () => require("./no-func-assign"),
+    "no-global-assign": () => require("./no-global-assign"),
+    "no-implicit-coercion": () => require("./no-implicit-coercion"),
+    "no-implicit-globals": () => require("./no-implicit-globals"),
+    "no-implied-eval": () => require("./no-implied-eval"),
+    "no-import-assign": () => require("./no-import-assign"),
+    "no-inline-comments": () => require("./no-inline-comments"),
+    "no-inner-declarations": () => require("./no-inner-declarations"),
+    "no-invalid-regexp": () => require("./no-invalid-regexp"),
+    "no-invalid-this": () => require("./no-invalid-this"),
+    "no-irregular-whitespace": () => require("./no-irregular-whitespace"),
+    "no-iterator": () => require("./no-iterator"),
+    "no-label-var": () => require("./no-label-var"),
+    "no-labels": () => require("./no-labels"),
+    "no-lone-blocks": () => require("./no-lone-blocks"),
+    "no-lonely-if": () => require("./no-lonely-if"),
+    "no-loop-func": () => require("./no-loop-func"),
+    "no-loss-of-precision": () => require("./no-loss-of-precision"),
+    "no-magic-numbers": () => require("./no-magic-numbers"),
+    "no-misleading-character-class": () => require("./no-misleading-character-class"),
+    "no-mixed-operators": () => require("./no-mixed-operators"),
+    "no-mixed-requires": () => require("./no-mixed-requires"),
+    "no-mixed-spaces-and-tabs": () => require("./no-mixed-spaces-and-tabs"),
+    "no-multi-assign": () => require("./no-multi-assign"),
+    "no-multi-spaces": () => require("./no-multi-spaces"),
+    "no-multi-str": () => require("./no-multi-str"),
+    "no-multiple-empty-lines": () => require("./no-multiple-empty-lines"),
+    "no-native-reassign": () => require("./no-native-reassign"),
+    "no-negated-condition": () => require("./no-negated-condition"),
+    "no-negated-in-lhs": () => require("./no-negated-in-lhs"),
+    "no-nested-ternary": () => require("./no-nested-ternary"),
+    "no-new": () => require("./no-new"),
+    "no-new-func": () => require("./no-new-func"),
+    "no-new-native-nonconstructor": () => require("./no-new-native-nonconstructor"),
+    "no-new-object": () => require("./no-new-object"),
+    "no-new-require": () => require("./no-new-require"),
+    "no-new-symbol": () => require("./no-new-symbol"),
+    "no-new-wrappers": () => require("./no-new-wrappers"),
+    "no-nonoctal-decimal-escape": () => require("./no-nonoctal-decimal-escape"),
+    "no-obj-calls": () => require("./no-obj-calls"),
+    "no-object-constructor": () => require("./no-object-constructor"),
+    "no-octal": () => require("./no-octal"),
+    "no-octal-escape": () => require("./no-octal-escape"),
+    "no-param-reassign": () => require("./no-param-reassign"),
+    "no-path-concat": () => require("./no-path-concat"),
+    "no-plusplus": () => require("./no-plusplus"),
+    "no-process-env": () => require("./no-process-env"),
+    "no-process-exit": () => require("./no-process-exit"),
+    "no-promise-executor-return": () => require("./no-promise-executor-return"),
+    "no-proto": () => require("./no-proto"),
+    "no-prototype-builtins": () => require("./no-prototype-builtins"),
+    "no-redeclare": () => require("./no-redeclare"),
+    "no-regex-spaces": () => require("./no-regex-spaces"),
+    "no-restricted-exports": () => require("./no-restricted-exports"),
+    "no-restricted-globals": () => require("./no-restricted-globals"),
+    "no-restricted-imports": () => require("./no-restricted-imports"),
+    "no-restricted-modules": () => require("./no-restricted-modules"),
+    "no-restricted-properties": () => require("./no-restricted-properties"),
+    "no-restricted-syntax": () => require("./no-restricted-syntax"),
+    "no-return-assign": () => require("./no-return-assign"),
+    "no-return-await": () => require("./no-return-await"),
+    "no-script-url": () => require("./no-script-url"),
+    "no-self-assign": () => require("./no-self-assign"),
+    "no-self-compare": () => require("./no-self-compare"),
+    "no-sequences": () => require("./no-sequences"),
+    "no-setter-return": () => require("./no-setter-return"),
+    "no-shadow": () => require("./no-shadow"),
+    "no-shadow-restricted-names": () => require("./no-shadow-restricted-names"),
+    "no-spaced-func": () => require("./no-spaced-func"),
+    "no-sparse-arrays": () => require("./no-sparse-arrays"),
+    "no-sync": () => require("./no-sync"),
+    "no-tabs": () => require("./no-tabs"),
+    "no-template-curly-in-string": () => require("./no-template-curly-in-string"),
+    "no-ternary": () => require("./no-ternary"),
+    "no-this-before-super": () => require("./no-this-before-super"),
+    "no-throw-literal": () => require("./no-throw-literal"),
+    "no-trailing-spaces": () => require("./no-trailing-spaces"),
+    "no-undef": () => require("./no-undef"),
+    "no-undef-init": () => require("./no-undef-init"),
+    "no-undefined": () => require("./no-undefined"),
+    "no-underscore-dangle": () => require("./no-underscore-dangle"),
+    "no-unexpected-multiline": () => require("./no-unexpected-multiline"),
+    "no-unmodified-loop-condition": () => require("./no-unmodified-loop-condition"),
+    "no-unneeded-ternary": () => require("./no-unneeded-ternary"),
+    "no-unreachable": () => require("./no-unreachable"),
+    "no-unreachable-loop": () => require("./no-unreachable-loop"),
+    "no-unsafe-finally": () => require("./no-unsafe-finally"),
+    "no-unsafe-negation": () => require("./no-unsafe-negation"),
+    "no-unsafe-optional-chaining": () => require("./no-unsafe-optional-chaining"),
+    "no-unused-expressions": () => require("./no-unused-expressions"),
+    "no-unused-labels": () => require("./no-unused-labels"),
+    "no-unused-private-class-members": () => require("./no-unused-private-class-members"),
+    "no-unused-vars": () => require("./no-unused-vars"),
+    "no-use-before-define": () => require("./no-use-before-define"),
+    "no-useless-backreference": () => require("./no-useless-backreference"),
+    "no-useless-call": () => require("./no-useless-call"),
+    "no-useless-catch": () => require("./no-useless-catch"),
+    "no-useless-computed-key": () => require("./no-useless-computed-key"),
+    "no-useless-concat": () => require("./no-useless-concat"),
+    "no-useless-constructor": () => require("./no-useless-constructor"),
+    "no-useless-escape": () => require("./no-useless-escape"),
+    "no-useless-rename": () => require("./no-useless-rename"),
+    "no-useless-return": () => require("./no-useless-return"),
+    "no-var": () => require("./no-var"),
+    "no-void": () => require("./no-void"),
+    "no-warning-comments": () => require("./no-warning-comments"),
+    "no-whitespace-before-property": () => require("./no-whitespace-before-property"),
+    "no-with": () => require("./no-with"),
+    "nonblock-statement-body-position": () => require("./nonblock-statement-body-position"),
+    "object-curly-newline": () => require("./object-curly-newline"),
+    "object-curly-spacing": () => require("./object-curly-spacing"),
+    "object-property-newline": () => require("./object-property-newline"),
+    "object-shorthand": () => require("./object-shorthand"),
+    "one-var": () => require("./one-var"),
+    "one-var-declaration-per-line": () => require("./one-var-declaration-per-line"),
+    "operator-assignment": () => require("./operator-assignment"),
+    "operator-linebreak": () => require("./operator-linebreak"),
+    "padded-blocks": () => require("./padded-blocks"),
+    "padding-line-between-statements": () => require("./padding-line-between-statements"),
+    "prefer-arrow-callback": () => require("./prefer-arrow-callback"),
+    "prefer-const": () => require("./prefer-const"),
+    "prefer-destructuring": () => require("./prefer-destructuring"),
+    "prefer-exponentiation-operator": () => require("./prefer-exponentiation-operator"),
+    "prefer-named-capture-group": () => require("./prefer-named-capture-group"),
+    "prefer-numeric-literals": () => require("./prefer-numeric-literals"),
+    "prefer-object-has-own": () => require("./prefer-object-has-own"),
+    "prefer-object-spread": () => require("./prefer-object-spread"),
+    "prefer-promise-reject-errors": () => require("./prefer-promise-reject-errors"),
+    "prefer-reflect": () => require("./prefer-reflect"),
+    "prefer-regex-literals": () => require("./prefer-regex-literals"),
+    "prefer-rest-params": () => require("./prefer-rest-params"),
+    "prefer-spread": () => require("./prefer-spread"),
+    "prefer-template": () => require("./prefer-template"),
+    "quote-props": () => require("./quote-props"),
+    quotes: () => require("./quotes"),
+    radix: () => require("./radix"),
+    "require-atomic-updates": () => require("./require-atomic-updates"),
+    "require-await": () => require("./require-await"),
+    "require-jsdoc": () => require("./require-jsdoc"),
+    "require-unicode-regexp": () => require("./require-unicode-regexp"),
+    "require-yield": () => require("./require-yield"),
+    "rest-spread-spacing": () => require("./rest-spread-spacing"),
+    semi: () => require("./semi"),
+    "semi-spacing": () => require("./semi-spacing"),
+    "semi-style": () => require("./semi-style"),
+    "sort-imports": () => require("./sort-imports"),
+    "sort-keys": () => require("./sort-keys"),
+    "sort-vars": () => require("./sort-vars"),
+    "space-before-blocks": () => require("./space-before-blocks"),
+    "space-before-function-paren": () => require("./space-before-function-paren"),
+    "space-in-parens": () => require("./space-in-parens"),
+    "space-infix-ops": () => require("./space-infix-ops"),
+    "space-unary-ops": () => require("./space-unary-ops"),
+    "spaced-comment": () => require("./spaced-comment"),
+    strict: () => require("./strict"),
+    "switch-colon-spacing": () => require("./switch-colon-spacing"),
+    "symbol-description": () => require("./symbol-description"),
+    "template-curly-spacing": () => require("./template-curly-spacing"),
+    "template-tag-spacing": () => require("./template-tag-spacing"),
+    "unicode-bom": () => require("./unicode-bom"),
+    "use-isnan": () => require("./use-isnan"),
+    "valid-jsdoc": () => require("./valid-jsdoc"),
+    "valid-typeof": () => require("./valid-typeof"),
+    "vars-on-top": () => require("./vars-on-top"),
+    "wrap-iife": () => require("./wrap-iife"),
+    "wrap-regex": () => require("./wrap-regex"),
+    "yield-star-spacing": () => require("./yield-star-spacing"),
+    yoda: () => require("./yoda")
+}));
Index: frontend/node_modules/eslint/lib/rules/init-declarations.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/init-declarations.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/init-declarations.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,139 @@
+/**
+ * @fileoverview A rule to control the style of variable initializations.
+ * @author Colin Ihrig
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given node is a for loop.
+ * @param {ASTNode} block A node to check.
+ * @returns {boolean} `true` when the node is a for loop.
+ */
+function isForLoop(block) {
+    return block.type === "ForInStatement" ||
+    block.type === "ForOfStatement" ||
+    block.type === "ForStatement";
+}
+
+/**
+ * Checks whether or not a given declarator node has its initializer.
+ * @param {ASTNode} node A declarator node to check.
+ * @returns {boolean} `true` when the node has its initializer.
+ */
+function isInitialized(node) {
+    const declaration = node.parent;
+    const block = declaration.parent;
+
+    if (isForLoop(block)) {
+        if (block.type === "ForStatement") {
+            return block.init === declaration;
+        }
+        return block.left === declaration;
+    }
+    return Boolean(node.init);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require or disallow initialization in variable declarations",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/init-declarations"
+        },
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["never"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                ignoreForLoopInit: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        },
+        messages: {
+            initialized: "Variable '{{idName}}' should be initialized on declaration.",
+            notInitialized: "Variable '{{idName}}' should not be initialized on declaration."
+        }
+    },
+
+    create(context) {
+
+        const MODE_ALWAYS = "always",
+            MODE_NEVER = "never";
+
+        const mode = context.options[0] || MODE_ALWAYS;
+        const params = context.options[1] || {};
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            "VariableDeclaration:exit"(node) {
+
+                const kind = node.kind,
+                    declarations = node.declarations;
+
+                for (let i = 0; i < declarations.length; ++i) {
+                    const declaration = declarations[i],
+                        id = declaration.id,
+                        initialized = isInitialized(declaration),
+                        isIgnoredForLoop = params.ignoreForLoopInit && isForLoop(node.parent);
+                    let messageId = "";
+
+                    if (mode === MODE_ALWAYS && !initialized) {
+                        messageId = "initialized";
+                    } else if (mode === MODE_NEVER && kind !== "const" && initialized && !isIgnoredForLoop) {
+                        messageId = "notInitialized";
+                    }
+
+                    if (id.type === "Identifier" && messageId) {
+                        context.report({
+                            node: declaration,
+                            messageId,
+                            data: {
+                                idName: id.name
+                            }
+                        });
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/jsx-quotes.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/jsx-quotes.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/jsx-quotes.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,98 @@
+/**
+ * @fileoverview A rule to ensure consistent quotes used in jsx syntax.
+ * @author Mathias Schreck <https://github.com/lo1tuma>
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const QUOTE_SETTINGS = {
+    "prefer-double": {
+        quote: "\"",
+        description: "singlequote",
+        convert(str) {
+            return str.replace(/'/gu, "\"");
+        }
+    },
+    "prefer-single": {
+        quote: "'",
+        description: "doublequote",
+        convert(str) {
+            return str.replace(/"/gu, "'");
+        }
+    }
+};
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce the consistent use of either double or single quotes in JSX attributes",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/jsx-quotes"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["prefer-single", "prefer-double"]
+            }
+        ],
+        messages: {
+            unexpected: "Unexpected usage of {{description}}."
+        }
+    },
+
+    create(context) {
+        const quoteOption = context.options[0] || "prefer-double",
+            setting = QUOTE_SETTINGS[quoteOption];
+
+        /**
+         * Checks if the given string literal node uses the expected quotes
+         * @param {ASTNode} node A string literal node.
+         * @returns {boolean} Whether or not the string literal used the expected quotes.
+         * @public
+         */
+        function usesExpectedQuotes(node) {
+            return node.value.includes(setting.quote) || astUtils.isSurroundedBy(node.raw, setting.quote);
+        }
+
+        return {
+            JSXAttribute(node) {
+                const attributeValue = node.value;
+
+                if (attributeValue && astUtils.isStringLiteral(attributeValue) && !usesExpectedQuotes(attributeValue)) {
+                    context.report({
+                        node: attributeValue,
+                        messageId: "unexpected",
+                        data: {
+                            description: setting.description
+                        },
+                        fix(fixer) {
+                            return fixer.replaceText(attributeValue, setting.convert(attributeValue.raw));
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/key-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/key-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/key-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,687 @@
+/**
+ * @fileoverview Rule to specify spacing of object literal keys and values
+ * @author Brandon Mills
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const { getGraphemeCount } = require("../shared/string-utils");
+
+/**
+ * Checks whether a string contains a line terminator as defined in
+ * http://www.ecma-international.org/ecma-262/5.1/#sec-7.3
+ * @param {string} str String to test.
+ * @returns {boolean} True if str contains a line terminator.
+ */
+function containsLineTerminator(str) {
+    return astUtils.LINEBREAK_MATCHER.test(str);
+}
+
+/**
+ * Gets the last element of an array.
+ * @param {Array} arr An array.
+ * @returns {any} Last element of arr.
+ */
+function last(arr) {
+    return arr[arr.length - 1];
+}
+
+/**
+ * Checks whether a node is contained on a single line.
+ * @param {ASTNode} node AST Node being evaluated.
+ * @returns {boolean} True if the node is a single line.
+ */
+function isSingleLine(node) {
+    return (node.loc.end.line === node.loc.start.line);
+}
+
+/**
+ * Checks whether the properties on a single line.
+ * @param {ASTNode[]} properties List of Property AST nodes.
+ * @returns {boolean} True if all properties is on a single line.
+ */
+function isSingleLineProperties(properties) {
+    const [firstProp] = properties,
+        lastProp = last(properties);
+
+    return firstProp.loc.start.line === lastProp.loc.end.line;
+}
+
+/**
+ * Initializes a single option property from the configuration with defaults for undefined values
+ * @param {Object} toOptions Object to be initialized
+ * @param {Object} fromOptions Object to be initialized from
+ * @returns {Object} The object with correctly initialized options and values
+ */
+function initOptionProperty(toOptions, fromOptions) {
+    toOptions.mode = fromOptions.mode || "strict";
+
+    // Set value of beforeColon
+    if (typeof fromOptions.beforeColon !== "undefined") {
+        toOptions.beforeColon = +fromOptions.beforeColon;
+    } else {
+        toOptions.beforeColon = 0;
+    }
+
+    // Set value of afterColon
+    if (typeof fromOptions.afterColon !== "undefined") {
+        toOptions.afterColon = +fromOptions.afterColon;
+    } else {
+        toOptions.afterColon = 1;
+    }
+
+    // Set align if exists
+    if (typeof fromOptions.align !== "undefined") {
+        if (typeof fromOptions.align === "object") {
+            toOptions.align = fromOptions.align;
+        } else { // "string"
+            toOptions.align = {
+                on: fromOptions.align,
+                mode: toOptions.mode,
+                beforeColon: toOptions.beforeColon,
+                afterColon: toOptions.afterColon
+            };
+        }
+    }
+
+    return toOptions;
+}
+
+/**
+ * Initializes all the option values (singleLine, multiLine and align) from the configuration with defaults for undefined values
+ * @param {Object} toOptions Object to be initialized
+ * @param {Object} fromOptions Object to be initialized from
+ * @returns {Object} The object with correctly initialized options and values
+ */
+function initOptions(toOptions, fromOptions) {
+    if (typeof fromOptions.align === "object") {
+
+        // Initialize the alignment configuration
+        toOptions.align = initOptionProperty({}, fromOptions.align);
+        toOptions.align.on = fromOptions.align.on || "colon";
+        toOptions.align.mode = fromOptions.align.mode || "strict";
+
+        toOptions.multiLine = initOptionProperty({}, (fromOptions.multiLine || fromOptions));
+        toOptions.singleLine = initOptionProperty({}, (fromOptions.singleLine || fromOptions));
+
+    } else { // string or undefined
+        toOptions.multiLine = initOptionProperty({}, (fromOptions.multiLine || fromOptions));
+        toOptions.singleLine = initOptionProperty({}, (fromOptions.singleLine || fromOptions));
+
+        // If alignment options are defined in multiLine, pull them out into the general align configuration
+        if (toOptions.multiLine.align) {
+            toOptions.align = {
+                on: toOptions.multiLine.align.on,
+                mode: toOptions.multiLine.align.mode || toOptions.multiLine.mode,
+                beforeColon: toOptions.multiLine.align.beforeColon,
+                afterColon: toOptions.multiLine.align.afterColon
+            };
+        }
+    }
+
+    return toOptions;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent spacing between keys and values in object literal properties",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/key-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [{
+            anyOf: [
+                {
+                    type: "object",
+                    properties: {
+                        align: {
+                            anyOf: [
+                                {
+                                    enum: ["colon", "value"]
+                                },
+                                {
+                                    type: "object",
+                                    properties: {
+                                        mode: {
+                                            enum: ["strict", "minimum"]
+                                        },
+                                        on: {
+                                            enum: ["colon", "value"]
+                                        },
+                                        beforeColon: {
+                                            type: "boolean"
+                                        },
+                                        afterColon: {
+                                            type: "boolean"
+                                        }
+                                    },
+                                    additionalProperties: false
+                                }
+                            ]
+                        },
+                        mode: {
+                            enum: ["strict", "minimum"]
+                        },
+                        beforeColon: {
+                            type: "boolean"
+                        },
+                        afterColon: {
+                            type: "boolean"
+                        }
+                    },
+                    additionalProperties: false
+                },
+                {
+                    type: "object",
+                    properties: {
+                        singleLine: {
+                            type: "object",
+                            properties: {
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        },
+                        multiLine: {
+                            type: "object",
+                            properties: {
+                                align: {
+                                    anyOf: [
+                                        {
+                                            enum: ["colon", "value"]
+                                        },
+                                        {
+                                            type: "object",
+                                            properties: {
+                                                mode: {
+                                                    enum: ["strict", "minimum"]
+                                                },
+                                                on: {
+                                                    enum: ["colon", "value"]
+                                                },
+                                                beforeColon: {
+                                                    type: "boolean"
+                                                },
+                                                afterColon: {
+                                                    type: "boolean"
+                                                }
+                                            },
+                                            additionalProperties: false
+                                        }
+                                    ]
+                                },
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    },
+                    additionalProperties: false
+                },
+                {
+                    type: "object",
+                    properties: {
+                        singleLine: {
+                            type: "object",
+                            properties: {
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        },
+                        multiLine: {
+                            type: "object",
+                            properties: {
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        },
+                        align: {
+                            type: "object",
+                            properties: {
+                                mode: {
+                                    enum: ["strict", "minimum"]
+                                },
+                                on: {
+                                    enum: ["colon", "value"]
+                                },
+                                beforeColon: {
+                                    type: "boolean"
+                                },
+                                afterColon: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    },
+                    additionalProperties: false
+                }
+            ]
+        }],
+        messages: {
+            extraKey: "Extra space after {{computed}}key '{{key}}'.",
+            extraValue: "Extra space before value for {{computed}}key '{{key}}'.",
+            missingKey: "Missing space after {{computed}}key '{{key}}'.",
+            missingValue: "Missing space before value for {{computed}}key '{{key}}'."
+        }
+    },
+
+    create(context) {
+
+        /**
+         * OPTIONS
+         * "key-spacing": [2, {
+         *     beforeColon: false,
+         *     afterColon: true,
+         *     align: "colon" // Optional, or "value"
+         * }
+         */
+        const options = context.options[0] || {},
+            ruleOptions = initOptions({}, options),
+            multiLineOptions = ruleOptions.multiLine,
+            singleLineOptions = ruleOptions.singleLine,
+            alignmentOptions = ruleOptions.align || null;
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Determines if the given property is key-value property.
+         * @param {ASTNode} property Property node to check.
+         * @returns {boolean} Whether the property is a key-value property.
+         */
+        function isKeyValueProperty(property) {
+            return !(
+                (property.method ||
+                property.shorthand ||
+                property.kind !== "init" || property.type !== "Property") // Could be "ExperimentalSpreadProperty" or "SpreadElement"
+            );
+        }
+
+        /**
+         * Starting from the given node (a property.key node here) looks forward
+         * until it finds the colon punctuator and returns it.
+         * @param {ASTNode} node The node to start looking from.
+         * @returns {ASTNode} The colon punctuator.
+         */
+        function getNextColon(node) {
+            return sourceCode.getTokenAfter(node, astUtils.isColonToken);
+        }
+
+        /**
+         * Starting from the given node (a property.key node here) looks forward
+         * until it finds the last token before a colon punctuator and returns it.
+         * @param {ASTNode} node The node to start looking from.
+         * @returns {ASTNode} The last token before a colon punctuator.
+         */
+        function getLastTokenBeforeColon(node) {
+            const colonToken = getNextColon(node);
+
+            return sourceCode.getTokenBefore(colonToken);
+        }
+
+        /**
+         * Starting from the given node (a property.key node here) looks forward
+         * until it finds the first token after a colon punctuator and returns it.
+         * @param {ASTNode} node The node to start looking from.
+         * @returns {ASTNode} The first token after a colon punctuator.
+         */
+        function getFirstTokenAfterColon(node) {
+            const colonToken = getNextColon(node);
+
+            return sourceCode.getTokenAfter(colonToken);
+        }
+
+        /**
+         * Checks whether a property is a member of the property group it follows.
+         * @param {ASTNode} lastMember The last Property known to be in the group.
+         * @param {ASTNode} candidate The next Property that might be in the group.
+         * @returns {boolean} True if the candidate property is part of the group.
+         */
+        function continuesPropertyGroup(lastMember, candidate) {
+            const groupEndLine = lastMember.loc.start.line,
+                candidateValueStartLine = (isKeyValueProperty(candidate) ? getFirstTokenAfterColon(candidate.key) : candidate).loc.start.line;
+
+            if (candidateValueStartLine - groupEndLine <= 1) {
+                return true;
+            }
+
+            /*
+             * Check that the first comment is adjacent to the end of the group, the
+             * last comment is adjacent to the candidate property, and that successive
+             * comments are adjacent to each other.
+             */
+            const leadingComments = sourceCode.getCommentsBefore(candidate);
+
+            if (
+                leadingComments.length &&
+                leadingComments[0].loc.start.line - groupEndLine <= 1 &&
+                candidateValueStartLine - last(leadingComments).loc.end.line <= 1
+            ) {
+                for (let i = 1; i < leadingComments.length; i++) {
+                    if (leadingComments[i].loc.start.line - leadingComments[i - 1].loc.end.line > 1) {
+                        return false;
+                    }
+                }
+                return true;
+            }
+
+            return false;
+        }
+
+        /**
+         * Gets an object literal property's key as the identifier name or string value.
+         * @param {ASTNode} property Property node whose key to retrieve.
+         * @returns {string} The property's key.
+         */
+        function getKey(property) {
+            const key = property.key;
+
+            if (property.computed) {
+                return sourceCode.getText().slice(key.range[0], key.range[1]);
+            }
+            return astUtils.getStaticPropertyName(property);
+        }
+
+        /**
+         * Reports an appropriately-formatted error if spacing is incorrect on one
+         * side of the colon.
+         * @param {ASTNode} property Key-value pair in an object literal.
+         * @param {string} side Side being verified - either "key" or "value".
+         * @param {string} whitespace Actual whitespace string.
+         * @param {int} expected Expected whitespace length.
+         * @param {string} mode Value of the mode as "strict" or "minimum"
+         * @returns {void}
+         */
+        function report(property, side, whitespace, expected, mode) {
+            const diff = whitespace.length - expected;
+
+            if ((
+                diff && mode === "strict" ||
+                diff < 0 && mode === "minimum" ||
+                diff > 0 && !expected && mode === "minimum") &&
+                !(expected && containsLineTerminator(whitespace))
+            ) {
+                const nextColon = getNextColon(property.key),
+                    tokenBeforeColon = sourceCode.getTokenBefore(nextColon, { includeComments: true }),
+                    tokenAfterColon = sourceCode.getTokenAfter(nextColon, { includeComments: true }),
+                    isKeySide = side === "key",
+                    isExtra = diff > 0,
+                    diffAbs = Math.abs(diff),
+                    spaces = Array(diffAbs + 1).join(" ");
+
+                const locStart = isKeySide ? tokenBeforeColon.loc.end : nextColon.loc.start;
+                const locEnd = isKeySide ? nextColon.loc.start : tokenAfterColon.loc.start;
+                const missingLoc = isKeySide ? tokenBeforeColon.loc : tokenAfterColon.loc;
+                const loc = isExtra ? { start: locStart, end: locEnd } : missingLoc;
+
+                let fix;
+
+                if (isExtra) {
+                    let range;
+
+                    // Remove whitespace
+                    if (isKeySide) {
+                        range = [tokenBeforeColon.range[1], tokenBeforeColon.range[1] + diffAbs];
+                    } else {
+                        range = [tokenAfterColon.range[0] - diffAbs, tokenAfterColon.range[0]];
+                    }
+                    fix = function(fixer) {
+                        return fixer.removeRange(range);
+                    };
+                } else {
+
+                    // Add whitespace
+                    if (isKeySide) {
+                        fix = function(fixer) {
+                            return fixer.insertTextAfter(tokenBeforeColon, spaces);
+                        };
+                    } else {
+                        fix = function(fixer) {
+                            return fixer.insertTextBefore(tokenAfterColon, spaces);
+                        };
+                    }
+                }
+
+                let messageId = "";
+
+                if (isExtra) {
+                    messageId = side === "key" ? "extraKey" : "extraValue";
+                } else {
+                    messageId = side === "key" ? "missingKey" : "missingValue";
+                }
+
+                context.report({
+                    node: property[side],
+                    loc,
+                    messageId,
+                    data: {
+                        computed: property.computed ? "computed " : "",
+                        key: getKey(property)
+                    },
+                    fix
+                });
+            }
+        }
+
+        /**
+         * Gets the number of characters in a key, including quotes around string
+         * keys and braces around computed property keys.
+         * @param {ASTNode} property Property of on object literal.
+         * @returns {int} Width of the key.
+         */
+        function getKeyWidth(property) {
+            const startToken = sourceCode.getFirstToken(property);
+            const endToken = getLastTokenBeforeColon(property.key);
+
+            return getGraphemeCount(sourceCode.getText().slice(startToken.range[0], endToken.range[1]));
+        }
+
+        /**
+         * Gets the whitespace around the colon in an object literal property.
+         * @param {ASTNode} property Property node from an object literal.
+         * @returns {Object} Whitespace before and after the property's colon.
+         */
+        function getPropertyWhitespace(property) {
+            const whitespace = /(\s*):(\s*)/u.exec(sourceCode.getText().slice(
+                property.key.range[1], property.value.range[0]
+            ));
+
+            if (whitespace) {
+                return {
+                    beforeColon: whitespace[1],
+                    afterColon: whitespace[2]
+                };
+            }
+            return null;
+        }
+
+        /**
+         * Creates groups of properties.
+         * @param {ASTNode} node ObjectExpression node being evaluated.
+         * @returns {Array<ASTNode[]>} Groups of property AST node lists.
+         */
+        function createGroups(node) {
+            if (node.properties.length === 1) {
+                return [node.properties];
+            }
+
+            return node.properties.reduce((groups, property) => {
+                const currentGroup = last(groups),
+                    prev = last(currentGroup);
+
+                if (!prev || continuesPropertyGroup(prev, property)) {
+                    currentGroup.push(property);
+                } else {
+                    groups.push([property]);
+                }
+
+                return groups;
+            }, [
+                []
+            ]);
+        }
+
+        /**
+         * Verifies correct vertical alignment of a group of properties.
+         * @param {ASTNode[]} properties List of Property AST nodes.
+         * @returns {void}
+         */
+        function verifyGroupAlignment(properties) {
+            const length = properties.length,
+                widths = properties.map(getKeyWidth), // Width of keys, including quotes
+                align = alignmentOptions.on; // "value" or "colon"
+            let targetWidth = Math.max(...widths),
+                beforeColon, afterColon, mode;
+
+            if (alignmentOptions && length > 1) { // When aligning values within a group, use the alignment configuration.
+                beforeColon = alignmentOptions.beforeColon;
+                afterColon = alignmentOptions.afterColon;
+                mode = alignmentOptions.mode;
+            } else {
+                beforeColon = multiLineOptions.beforeColon;
+                afterColon = multiLineOptions.afterColon;
+                mode = alignmentOptions.mode;
+            }
+
+            // Conditionally include one space before or after colon
+            targetWidth += (align === "colon" ? beforeColon : afterColon);
+
+            for (let i = 0; i < length; i++) {
+                const property = properties[i];
+                const whitespace = getPropertyWhitespace(property);
+
+                if (whitespace) { // Object literal getters/setters lack a colon
+                    const width = widths[i];
+
+                    if (align === "value") {
+                        report(property, "key", whitespace.beforeColon, beforeColon, mode);
+                        report(property, "value", whitespace.afterColon, targetWidth - width, mode);
+                    } else { // align = "colon"
+                        report(property, "key", whitespace.beforeColon, targetWidth - width, mode);
+                        report(property, "value", whitespace.afterColon, afterColon, mode);
+                    }
+                }
+            }
+        }
+
+        /**
+         * Verifies spacing of property conforms to specified options.
+         * @param {ASTNode} node Property node being evaluated.
+         * @param {Object} lineOptions Configured singleLine or multiLine options
+         * @returns {void}
+         */
+        function verifySpacing(node, lineOptions) {
+            const actual = getPropertyWhitespace(node);
+
+            if (actual) { // Object literal getters/setters lack colons
+                report(node, "key", actual.beforeColon, lineOptions.beforeColon, lineOptions.mode);
+                report(node, "value", actual.afterColon, lineOptions.afterColon, lineOptions.mode);
+            }
+        }
+
+        /**
+         * Verifies spacing of each property in a list.
+         * @param {ASTNode[]} properties List of Property AST nodes.
+         * @param {Object} lineOptions Configured singleLine or multiLine options
+         * @returns {void}
+         */
+        function verifyListSpacing(properties, lineOptions) {
+            const length = properties.length;
+
+            for (let i = 0; i < length; i++) {
+                verifySpacing(properties[i], lineOptions);
+            }
+        }
+
+        /**
+         * Verifies vertical alignment, taking into account groups of properties.
+         * @param {ASTNode} node ObjectExpression node being evaluated.
+         * @returns {void}
+         */
+        function verifyAlignment(node) {
+            createGroups(node).forEach(group => {
+                const properties = group.filter(isKeyValueProperty);
+
+                if (properties.length > 0 && isSingleLineProperties(properties)) {
+                    verifyListSpacing(properties, multiLineOptions);
+                } else {
+                    verifyGroupAlignment(properties);
+                }
+            });
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        if (alignmentOptions) { // Verify vertical alignment
+
+            return {
+                ObjectExpression(node) {
+                    if (isSingleLine(node)) {
+                        verifyListSpacing(node.properties.filter(isKeyValueProperty), singleLineOptions);
+                    } else {
+                        verifyAlignment(node);
+                    }
+                }
+            };
+
+        }
+
+        // Obey beforeColon and afterColon in each property as configured
+        return {
+            Property(node) {
+                verifySpacing(node, isSingleLine(node.parent) ? singleLineOptions : multiLineOptions);
+            }
+        };
+
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/keyword-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/keyword-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/keyword-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,640 @@
+/**
+ * @fileoverview Rule to enforce spacing before and after keywords.
+ * @author Toru Nagashima
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils"),
+    keywords = require("./utils/keywords");
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const PREV_TOKEN = /^[)\]}>]$/u;
+const NEXT_TOKEN = /^(?:[([{<~!]|\+\+?|--?)$/u;
+const PREV_TOKEN_M = /^[)\]}>*]$/u;
+const NEXT_TOKEN_M = /^[{*]$/u;
+const TEMPLATE_OPEN_PAREN = /\$\{$/u;
+const TEMPLATE_CLOSE_PAREN = /^\}/u;
+const CHECK_TYPE = /^(?:JSXElement|RegularExpression|String|Template|PrivateIdentifier)$/u;
+const KEYS = keywords.concat(["as", "async", "await", "from", "get", "let", "of", "set", "yield"]);
+
+// check duplications.
+(function() {
+    KEYS.sort();
+    for (let i = 1; i < KEYS.length; ++i) {
+        if (KEYS[i] === KEYS[i - 1]) {
+            throw new Error(`Duplication was found in the keyword list: ${KEYS[i]}`);
+        }
+    }
+}());
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given token is a "Template" token ends with "${".
+ * @param {Token} token A token to check.
+ * @returns {boolean} `true` if the token is a "Template" token ends with "${".
+ */
+function isOpenParenOfTemplate(token) {
+    return token.type === "Template" && TEMPLATE_OPEN_PAREN.test(token.value);
+}
+
+/**
+ * Checks whether or not a given token is a "Template" token starts with "}".
+ * @param {Token} token A token to check.
+ * @returns {boolean} `true` if the token is a "Template" token starts with "}".
+ */
+function isCloseParenOfTemplate(token) {
+    return token.type === "Template" && TEMPLATE_CLOSE_PAREN.test(token.value);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent spacing before and after keywords",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/keyword-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    before: { type: "boolean", default: true },
+                    after: { type: "boolean", default: true },
+                    overrides: {
+                        type: "object",
+                        properties: KEYS.reduce((retv, key) => {
+                            retv[key] = {
+                                type: "object",
+                                properties: {
+                                    before: { type: "boolean" },
+                                    after: { type: "boolean" }
+                                },
+                                additionalProperties: false
+                            };
+                            return retv;
+                        }, {}),
+                        additionalProperties: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            expectedBefore: "Expected space(s) before \"{{value}}\".",
+            expectedAfter: "Expected space(s) after \"{{value}}\".",
+            unexpectedBefore: "Unexpected space(s) before \"{{value}}\".",
+            unexpectedAfter: "Unexpected space(s) after \"{{value}}\"."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        const tokensToIgnore = new WeakSet();
+
+        /**
+         * Reports a given token if there are not space(s) before the token.
+         * @param {Token} token A token to report.
+         * @param {RegExp} pattern A pattern of the previous token to check.
+         * @returns {void}
+         */
+        function expectSpaceBefore(token, pattern) {
+            const prevToken = sourceCode.getTokenBefore(token);
+
+            if (prevToken &&
+                (CHECK_TYPE.test(prevToken.type) || pattern.test(prevToken.value)) &&
+                !isOpenParenOfTemplate(prevToken) &&
+                !tokensToIgnore.has(prevToken) &&
+                astUtils.isTokenOnSameLine(prevToken, token) &&
+                !sourceCode.isSpaceBetweenTokens(prevToken, token)
+            ) {
+                context.report({
+                    loc: token.loc,
+                    messageId: "expectedBefore",
+                    data: token,
+                    fix(fixer) {
+                        return fixer.insertTextBefore(token, " ");
+                    }
+                });
+            }
+        }
+
+        /**
+         * Reports a given token if there are space(s) before the token.
+         * @param {Token} token A token to report.
+         * @param {RegExp} pattern A pattern of the previous token to check.
+         * @returns {void}
+         */
+        function unexpectSpaceBefore(token, pattern) {
+            const prevToken = sourceCode.getTokenBefore(token);
+
+            if (prevToken &&
+                (CHECK_TYPE.test(prevToken.type) || pattern.test(prevToken.value)) &&
+                !isOpenParenOfTemplate(prevToken) &&
+                !tokensToIgnore.has(prevToken) &&
+                astUtils.isTokenOnSameLine(prevToken, token) &&
+                sourceCode.isSpaceBetweenTokens(prevToken, token)
+            ) {
+                context.report({
+                    loc: { start: prevToken.loc.end, end: token.loc.start },
+                    messageId: "unexpectedBefore",
+                    data: token,
+                    fix(fixer) {
+                        return fixer.removeRange([prevToken.range[1], token.range[0]]);
+                    }
+                });
+            }
+        }
+
+        /**
+         * Reports a given token if there are not space(s) after the token.
+         * @param {Token} token A token to report.
+         * @param {RegExp} pattern A pattern of the next token to check.
+         * @returns {void}
+         */
+        function expectSpaceAfter(token, pattern) {
+            const nextToken = sourceCode.getTokenAfter(token);
+
+            if (nextToken &&
+                (CHECK_TYPE.test(nextToken.type) || pattern.test(nextToken.value)) &&
+                !isCloseParenOfTemplate(nextToken) &&
+                !tokensToIgnore.has(nextToken) &&
+                astUtils.isTokenOnSameLine(token, nextToken) &&
+                !sourceCode.isSpaceBetweenTokens(token, nextToken)
+            ) {
+                context.report({
+                    loc: token.loc,
+                    messageId: "expectedAfter",
+                    data: token,
+                    fix(fixer) {
+                        return fixer.insertTextAfter(token, " ");
+                    }
+                });
+            }
+        }
+
+        /**
+         * Reports a given token if there are space(s) after the token.
+         * @param {Token} token A token to report.
+         * @param {RegExp} pattern A pattern of the next token to check.
+         * @returns {void}
+         */
+        function unexpectSpaceAfter(token, pattern) {
+            const nextToken = sourceCode.getTokenAfter(token);
+
+            if (nextToken &&
+                (CHECK_TYPE.test(nextToken.type) || pattern.test(nextToken.value)) &&
+                !isCloseParenOfTemplate(nextToken) &&
+                !tokensToIgnore.has(nextToken) &&
+                astUtils.isTokenOnSameLine(token, nextToken) &&
+                sourceCode.isSpaceBetweenTokens(token, nextToken)
+            ) {
+
+                context.report({
+                    loc: { start: token.loc.end, end: nextToken.loc.start },
+                    messageId: "unexpectedAfter",
+                    data: token,
+                    fix(fixer) {
+                        return fixer.removeRange([token.range[1], nextToken.range[0]]);
+                    }
+                });
+            }
+        }
+
+        /**
+         * Parses the option object and determines check methods for each keyword.
+         * @param {Object|undefined} options The option object to parse.
+         * @returns {Object} - Normalized option object.
+         *      Keys are keywords (there are for every keyword).
+         *      Values are instances of `{"before": function, "after": function}`.
+         */
+        function parseOptions(options = {}) {
+            const before = options.before !== false;
+            const after = options.after !== false;
+            const defaultValue = {
+                before: before ? expectSpaceBefore : unexpectSpaceBefore,
+                after: after ? expectSpaceAfter : unexpectSpaceAfter
+            };
+            const overrides = (options && options.overrides) || {};
+            const retv = Object.create(null);
+
+            for (let i = 0; i < KEYS.length; ++i) {
+                const key = KEYS[i];
+                const override = overrides[key];
+
+                if (override) {
+                    const thisBefore = ("before" in override) ? override.before : before;
+                    const thisAfter = ("after" in override) ? override.after : after;
+
+                    retv[key] = {
+                        before: thisBefore ? expectSpaceBefore : unexpectSpaceBefore,
+                        after: thisAfter ? expectSpaceAfter : unexpectSpaceAfter
+                    };
+                } else {
+                    retv[key] = defaultValue;
+                }
+            }
+
+            return retv;
+        }
+
+        const checkMethodMap = parseOptions(context.options[0]);
+
+        /**
+         * Reports a given token if usage of spacing followed by the token is
+         * invalid.
+         * @param {Token} token A token to report.
+         * @param {RegExp} [pattern] Optional. A pattern of the previous
+         *      token to check.
+         * @returns {void}
+         */
+        function checkSpacingBefore(token, pattern) {
+            checkMethodMap[token.value].before(token, pattern || PREV_TOKEN);
+        }
+
+        /**
+         * Reports a given token if usage of spacing preceded by the token is
+         * invalid.
+         * @param {Token} token A token to report.
+         * @param {RegExp} [pattern] Optional. A pattern of the next
+         *      token to check.
+         * @returns {void}
+         */
+        function checkSpacingAfter(token, pattern) {
+            checkMethodMap[token.value].after(token, pattern || NEXT_TOKEN);
+        }
+
+        /**
+         * Reports a given token if usage of spacing around the token is invalid.
+         * @param {Token} token A token to report.
+         * @returns {void}
+         */
+        function checkSpacingAround(token) {
+            checkSpacingBefore(token);
+            checkSpacingAfter(token);
+        }
+
+        /**
+         * Reports the first token of a given node if the first token is a keyword
+         * and usage of spacing around the token is invalid.
+         * @param {ASTNode|null} node A node to report.
+         * @returns {void}
+         */
+        function checkSpacingAroundFirstToken(node) {
+            const firstToken = node && sourceCode.getFirstToken(node);
+
+            if (firstToken && firstToken.type === "Keyword") {
+                checkSpacingAround(firstToken);
+            }
+        }
+
+        /**
+         * Reports the first token of a given node if the first token is a keyword
+         * and usage of spacing followed by the token is invalid.
+         *
+         * This is used for unary operators (e.g. `typeof`), `function`, and `super`.
+         * Other rules are handling usage of spacing preceded by those keywords.
+         * @param {ASTNode|null} node A node to report.
+         * @returns {void}
+         */
+        function checkSpacingBeforeFirstToken(node) {
+            const firstToken = node && sourceCode.getFirstToken(node);
+
+            if (firstToken && firstToken.type === "Keyword") {
+                checkSpacingBefore(firstToken);
+            }
+        }
+
+        /**
+         * Reports the previous token of a given node if the token is a keyword and
+         * usage of spacing around the token is invalid.
+         * @param {ASTNode|null} node A node to report.
+         * @returns {void}
+         */
+        function checkSpacingAroundTokenBefore(node) {
+            if (node) {
+                const token = sourceCode.getTokenBefore(node, astUtils.isKeywordToken);
+
+                checkSpacingAround(token);
+            }
+        }
+
+        /**
+         * Reports `async` or `function` keywords of a given node if usage of
+         * spacing around those keywords is invalid.
+         * @param {ASTNode} node A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForFunction(node) {
+            const firstToken = node && sourceCode.getFirstToken(node);
+
+            if (firstToken &&
+                ((firstToken.type === "Keyword" && firstToken.value === "function") ||
+                firstToken.value === "async")
+            ) {
+                checkSpacingBefore(firstToken);
+            }
+        }
+
+        /**
+         * Reports `class` and `extends` keywords of a given node if usage of
+         * spacing around those keywords is invalid.
+         * @param {ASTNode} node A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForClass(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAroundTokenBefore(node.superClass);
+        }
+
+        /**
+         * Reports `if` and `else` keywords of a given node if usage of spacing
+         * around those keywords is invalid.
+         * @param {ASTNode} node A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForIfStatement(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAroundTokenBefore(node.alternate);
+        }
+
+        /**
+         * Reports `try`, `catch`, and `finally` keywords of a given node if usage
+         * of spacing around those keywords is invalid.
+         * @param {ASTNode} node A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForTryStatement(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAroundFirstToken(node.handler);
+            checkSpacingAroundTokenBefore(node.finalizer);
+        }
+
+        /**
+         * Reports `do` and `while` keywords of a given node if usage of spacing
+         * around those keywords is invalid.
+         * @param {ASTNode} node A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForDoWhileStatement(node) {
+            checkSpacingAroundFirstToken(node);
+            checkSpacingAroundTokenBefore(node.test);
+        }
+
+        /**
+         * Reports `for` and `in` keywords of a given node if usage of spacing
+         * around those keywords is invalid.
+         * @param {ASTNode} node A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForForInStatement(node) {
+            checkSpacingAroundFirstToken(node);
+
+            const inToken = sourceCode.getTokenBefore(node.right, astUtils.isNotOpeningParenToken);
+            const previousToken = sourceCode.getTokenBefore(inToken);
+
+            if (previousToken.type !== "PrivateIdentifier") {
+                checkSpacingBefore(inToken);
+            }
+
+            checkSpacingAfter(inToken);
+        }
+
+        /**
+         * Reports `for` and `of` keywords of a given node if usage of spacing
+         * around those keywords is invalid.
+         * @param {ASTNode} node A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForForOfStatement(node) {
+            if (node.await) {
+                checkSpacingBefore(sourceCode.getFirstToken(node, 0));
+                checkSpacingAfter(sourceCode.getFirstToken(node, 1));
+            } else {
+                checkSpacingAroundFirstToken(node);
+            }
+
+            const ofToken = sourceCode.getTokenBefore(node.right, astUtils.isNotOpeningParenToken);
+            const previousToken = sourceCode.getTokenBefore(ofToken);
+
+            if (previousToken.type !== "PrivateIdentifier") {
+                checkSpacingBefore(ofToken);
+            }
+
+            checkSpacingAfter(ofToken);
+        }
+
+        /**
+         * Reports `import`, `export`, `as`, and `from` keywords of a given node if
+         * usage of spacing around those keywords is invalid.
+         *
+         * This rule handles the `*` token in module declarations.
+         *
+         *     import*as A from "./a"; /*error Expected space(s) after "import".
+         *                               error Expected space(s) before "as".
+         * @param {ASTNode} node A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForModuleDeclaration(node) {
+            const firstToken = sourceCode.getFirstToken(node);
+
+            checkSpacingBefore(firstToken, PREV_TOKEN_M);
+            checkSpacingAfter(firstToken, NEXT_TOKEN_M);
+
+            if (node.type === "ExportDefaultDeclaration") {
+                checkSpacingAround(sourceCode.getTokenAfter(firstToken));
+            }
+
+            if (node.type === "ExportAllDeclaration" && node.exported) {
+                const asToken = sourceCode.getTokenBefore(node.exported);
+
+                checkSpacingBefore(asToken, PREV_TOKEN_M);
+                checkSpacingAfter(asToken, NEXT_TOKEN_M);
+            }
+
+            if (node.source) {
+                const fromToken = sourceCode.getTokenBefore(node.source);
+
+                checkSpacingBefore(fromToken, PREV_TOKEN_M);
+                checkSpacingAfter(fromToken, NEXT_TOKEN_M);
+            }
+        }
+
+        /**
+         * Reports `as` keyword of a given node if usage of spacing around this
+         * keyword is invalid.
+         * @param {ASTNode} node An `ImportSpecifier` node to check.
+         * @returns {void}
+         */
+        function checkSpacingForImportSpecifier(node) {
+            if (node.imported.range[0] !== node.local.range[0]) {
+                const asToken = sourceCode.getTokenBefore(node.local);
+
+                checkSpacingBefore(asToken, PREV_TOKEN_M);
+            }
+        }
+
+        /**
+         * Reports `as` keyword of a given node if usage of spacing around this
+         * keyword is invalid.
+         * @param {ASTNode} node An `ExportSpecifier` node to check.
+         * @returns {void}
+         */
+        function checkSpacingForExportSpecifier(node) {
+            if (node.local.range[0] !== node.exported.range[0]) {
+                const asToken = sourceCode.getTokenBefore(node.exported);
+
+                checkSpacingBefore(asToken, PREV_TOKEN_M);
+                checkSpacingAfter(asToken, NEXT_TOKEN_M);
+            }
+        }
+
+        /**
+         * Reports `as` keyword of a given node if usage of spacing around this
+         * keyword is invalid.
+         * @param {ASTNode} node A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForImportNamespaceSpecifier(node) {
+            const asToken = sourceCode.getFirstToken(node, 1);
+
+            checkSpacingBefore(asToken, PREV_TOKEN_M);
+        }
+
+        /**
+         * Reports `static`, `get`, and `set` keywords of a given node if usage of
+         * spacing around those keywords is invalid.
+         * @param {ASTNode} node A node to report.
+         * @throws {Error} If unable to find token get, set, or async beside method name.
+         * @returns {void}
+         */
+        function checkSpacingForProperty(node) {
+            if (node.static) {
+                checkSpacingAroundFirstToken(node);
+            }
+            if (node.kind === "get" ||
+                node.kind === "set" ||
+                (
+                    (node.method || node.type === "MethodDefinition") &&
+                    node.value.async
+                )
+            ) {
+                const token = sourceCode.getTokenBefore(
+                    node.key,
+                    tok => {
+                        switch (tok.value) {
+                            case "get":
+                            case "set":
+                            case "async":
+                                return true;
+                            default:
+                                return false;
+                        }
+                    }
+                );
+
+                if (!token) {
+                    throw new Error("Failed to find token get, set, or async beside method name");
+                }
+
+
+                checkSpacingAround(token);
+            }
+        }
+
+        /**
+         * Reports `await` keyword of a given node if usage of spacing before
+         * this keyword is invalid.
+         * @param {ASTNode} node A node to report.
+         * @returns {void}
+         */
+        function checkSpacingForAwaitExpression(node) {
+            checkSpacingBefore(sourceCode.getFirstToken(node));
+        }
+
+        return {
+
+            // Statements
+            DebuggerStatement: checkSpacingAroundFirstToken,
+            WithStatement: checkSpacingAroundFirstToken,
+
+            // Statements - Control flow
+            BreakStatement: checkSpacingAroundFirstToken,
+            ContinueStatement: checkSpacingAroundFirstToken,
+            ReturnStatement: checkSpacingAroundFirstToken,
+            ThrowStatement: checkSpacingAroundFirstToken,
+            TryStatement: checkSpacingForTryStatement,
+
+            // Statements - Choice
+            IfStatement: checkSpacingForIfStatement,
+            SwitchStatement: checkSpacingAroundFirstToken,
+            SwitchCase: checkSpacingAroundFirstToken,
+
+            // Statements - Loops
+            DoWhileStatement: checkSpacingForDoWhileStatement,
+            ForInStatement: checkSpacingForForInStatement,
+            ForOfStatement: checkSpacingForForOfStatement,
+            ForStatement: checkSpacingAroundFirstToken,
+            WhileStatement: checkSpacingAroundFirstToken,
+
+            // Statements - Declarations
+            ClassDeclaration: checkSpacingForClass,
+            ExportNamedDeclaration: checkSpacingForModuleDeclaration,
+            ExportDefaultDeclaration: checkSpacingForModuleDeclaration,
+            ExportAllDeclaration: checkSpacingForModuleDeclaration,
+            FunctionDeclaration: checkSpacingForFunction,
+            ImportDeclaration: checkSpacingForModuleDeclaration,
+            VariableDeclaration: checkSpacingAroundFirstToken,
+
+            // Expressions
+            ArrowFunctionExpression: checkSpacingForFunction,
+            AwaitExpression: checkSpacingForAwaitExpression,
+            ClassExpression: checkSpacingForClass,
+            FunctionExpression: checkSpacingForFunction,
+            NewExpression: checkSpacingBeforeFirstToken,
+            Super: checkSpacingBeforeFirstToken,
+            ThisExpression: checkSpacingBeforeFirstToken,
+            UnaryExpression: checkSpacingBeforeFirstToken,
+            YieldExpression: checkSpacingBeforeFirstToken,
+
+            // Others
+            ImportSpecifier: checkSpacingForImportSpecifier,
+            ExportSpecifier: checkSpacingForExportSpecifier,
+            ImportNamespaceSpecifier: checkSpacingForImportNamespaceSpecifier,
+            MethodDefinition: checkSpacingForProperty,
+            PropertyDefinition: checkSpacingForProperty,
+            StaticBlock: checkSpacingAroundFirstToken,
+            Property: checkSpacingForProperty,
+
+            // To avoid conflicts with `space-infix-ops`, e.g. `a > this.b`
+            "BinaryExpression[operator='>']"(node) {
+                const operatorToken = sourceCode.getTokenBefore(node.right, astUtils.isNotOpeningParenToken);
+
+                tokensToIgnore.add(operatorToken);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/line-comment-position.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/line-comment-position.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/line-comment-position.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,122 @@
+/**
+ * @fileoverview Rule to enforce the position of line comments
+ * @author Alberto Rodríguez
+ */
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "Enforce position of line comments",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/line-comment-position"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["above", "beside"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            position: {
+                                enum: ["above", "beside"]
+                            },
+                            ignorePattern: {
+                                type: "string"
+                            },
+                            applyDefaultPatterns: {
+                                type: "boolean"
+                            },
+                            applyDefaultIgnorePatterns: {
+                                type: "boolean"
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+        messages: {
+            above: "Expected comment to be above code.",
+            beside: "Expected comment to be beside code."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0];
+
+        let above,
+            ignorePattern,
+            applyDefaultIgnorePatterns = true;
+
+        if (!options || typeof options === "string") {
+            above = !options || options === "above";
+
+        } else {
+            above = !options.position || options.position === "above";
+            ignorePattern = options.ignorePattern;
+
+            if (Object.prototype.hasOwnProperty.call(options, "applyDefaultIgnorePatterns")) {
+                applyDefaultIgnorePatterns = options.applyDefaultIgnorePatterns;
+            } else {
+                applyDefaultIgnorePatterns = options.applyDefaultPatterns !== false;
+            }
+        }
+
+        const defaultIgnoreRegExp = astUtils.COMMENTS_IGNORE_PATTERN;
+        const fallThroughRegExp = /^\s*falls?\s?through/u;
+        const customIgnoreRegExp = new RegExp(ignorePattern, "u");
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program() {
+                const comments = sourceCode.getAllComments();
+
+                comments.filter(token => token.type === "Line").forEach(node => {
+                    if (applyDefaultIgnorePatterns && (defaultIgnoreRegExp.test(node.value) || fallThroughRegExp.test(node.value))) {
+                        return;
+                    }
+
+                    if (ignorePattern && customIgnoreRegExp.test(node.value)) {
+                        return;
+                    }
+
+                    const previous = sourceCode.getTokenBefore(node, { includeComments: true });
+                    const isOnSameLine = previous && previous.loc.end.line === node.loc.start.line;
+
+                    if (above) {
+                        if (isOnSameLine) {
+                            context.report({
+                                node,
+                                messageId: "above"
+                            });
+                        }
+                    } else {
+                        if (!isOnSameLine) {
+                            context.report({
+                                node,
+                                messageId: "beside"
+                            });
+                        }
+                    }
+                });
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/linebreak-style.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/linebreak-style.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/linebreak-style.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,108 @@
+/**
+ * @fileoverview Rule to enforce a single linebreak style.
+ * @author Erik Mueller
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent linebreak style",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/linebreak-style"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["unix", "windows"]
+            }
+        ],
+        messages: {
+            expectedLF: "Expected linebreaks to be 'LF' but found 'CRLF'.",
+            expectedCRLF: "Expected linebreaks to be 'CRLF' but found 'LF'."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Builds a fix function that replaces text at the specified range in the source text.
+         * @param {int[]} range The range to replace
+         * @param {string} text The text to insert.
+         * @returns {Function} Fixer function
+         * @private
+         */
+        function createFix(range, text) {
+            return function(fixer) {
+                return fixer.replaceTextRange(range, text);
+            };
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: function checkForLinebreakStyle(node) {
+                const linebreakStyle = context.options[0] || "unix",
+                    expectedLF = linebreakStyle === "unix",
+                    expectedLFChars = expectedLF ? "\n" : "\r\n",
+                    source = sourceCode.getText(),
+                    pattern = astUtils.createGlobalLinebreakMatcher();
+                let match;
+
+                let i = 0;
+
+                while ((match = pattern.exec(source)) !== null) {
+                    i++;
+                    if (match[0] === expectedLFChars) {
+                        continue;
+                    }
+
+                    const index = match.index;
+                    const range = [index, index + match[0].length];
+
+                    context.report({
+                        node,
+                        loc: {
+                            start: {
+                                line: i,
+                                column: sourceCode.lines[i - 1].length
+                            },
+                            end: {
+                                line: i + 1,
+                                column: 0
+                            }
+                        },
+                        messageId: expectedLF ? "expectedLF" : "expectedCRLF",
+                        fix: createFix(range, expectedLFChars)
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/lines-around-comment.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/lines-around-comment.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/lines-around-comment.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,471 @@
+/**
+ * @fileoverview Enforces empty lines around comments.
+ * @author Jamund Ferguson
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Return an array with any line numbers that are empty.
+ * @param {Array} lines An array of each line of the file.
+ * @returns {Array} An array of line numbers.
+ */
+function getEmptyLineNums(lines) {
+    const emptyLines = lines.map((line, i) => ({
+        code: line.trim(),
+        num: i + 1
+    })).filter(line => !line.code).map(line => line.num);
+
+    return emptyLines;
+}
+
+/**
+ * Return an array with any line numbers that contain comments.
+ * @param {Array} comments An array of comment tokens.
+ * @returns {Array} An array of line numbers.
+ */
+function getCommentLineNums(comments) {
+    const lines = [];
+
+    comments.forEach(token => {
+        const start = token.loc.start.line;
+        const end = token.loc.end.line;
+
+        lines.push(start, end);
+    });
+    return lines;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require empty lines around comments",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/lines-around-comment"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    beforeBlockComment: {
+                        type: "boolean",
+                        default: true
+                    },
+                    afterBlockComment: {
+                        type: "boolean",
+                        default: false
+                    },
+                    beforeLineComment: {
+                        type: "boolean",
+                        default: false
+                    },
+                    afterLineComment: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowBlockStart: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowBlockEnd: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowClassStart: {
+                        type: "boolean"
+                    },
+                    allowClassEnd: {
+                        type: "boolean"
+                    },
+                    allowObjectStart: {
+                        type: "boolean"
+                    },
+                    allowObjectEnd: {
+                        type: "boolean"
+                    },
+                    allowArrayStart: {
+                        type: "boolean"
+                    },
+                    allowArrayEnd: {
+                        type: "boolean"
+                    },
+                    ignorePattern: {
+                        type: "string"
+                    },
+                    applyDefaultIgnorePatterns: {
+                        type: "boolean"
+                    },
+                    afterHashbangComment: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            after: "Expected line after comment.",
+            before: "Expected line before comment."
+        }
+    },
+
+    create(context) {
+
+        const options = Object.assign({}, context.options[0]);
+        const ignorePattern = options.ignorePattern;
+        const defaultIgnoreRegExp = astUtils.COMMENTS_IGNORE_PATTERN;
+        const customIgnoreRegExp = new RegExp(ignorePattern, "u");
+        const applyDefaultIgnorePatterns = options.applyDefaultIgnorePatterns !== false;
+
+        options.beforeBlockComment = typeof options.beforeBlockComment !== "undefined" ? options.beforeBlockComment : true;
+
+        const sourceCode = context.sourceCode;
+
+        const lines = sourceCode.lines,
+            numLines = lines.length + 1,
+            comments = sourceCode.getAllComments(),
+            commentLines = getCommentLineNums(comments),
+            emptyLines = getEmptyLineNums(lines),
+            commentAndEmptyLines = new Set(commentLines.concat(emptyLines));
+
+        /**
+         * Returns whether or not comments are on lines starting with or ending with code
+         * @param {token} token The comment token to check.
+         * @returns {boolean} True if the comment is not alone.
+         */
+        function codeAroundComment(token) {
+            let currentToken = token;
+
+            do {
+                currentToken = sourceCode.getTokenBefore(currentToken, { includeComments: true });
+            } while (currentToken && astUtils.isCommentToken(currentToken));
+
+            if (currentToken && astUtils.isTokenOnSameLine(currentToken, token)) {
+                return true;
+            }
+
+            currentToken = token;
+            do {
+                currentToken = sourceCode.getTokenAfter(currentToken, { includeComments: true });
+            } while (currentToken && astUtils.isCommentToken(currentToken));
+
+            if (currentToken && astUtils.isTokenOnSameLine(token, currentToken)) {
+                return true;
+            }
+
+            return false;
+        }
+
+        /**
+         * Returns whether or not comments are inside a node type or not.
+         * @param {ASTNode} parent The Comment parent node.
+         * @param {string} nodeType The parent type to check against.
+         * @returns {boolean} True if the comment is inside nodeType.
+         */
+        function isParentNodeType(parent, nodeType) {
+            return parent.type === nodeType ||
+                (parent.body && parent.body.type === nodeType) ||
+                (parent.consequent && parent.consequent.type === nodeType);
+        }
+
+        /**
+         * Returns the parent node that contains the given token.
+         * @param {token} token The token to check.
+         * @returns {ASTNode|null} The parent node that contains the given token.
+         */
+        function getParentNodeOfToken(token) {
+            const node = sourceCode.getNodeByRangeIndex(token.range[0]);
+
+            /*
+             * For the purpose of this rule, the comment token is in a `StaticBlock` node only
+             * if it's inside the braces of that `StaticBlock` node.
+             *
+             * Example where this function returns `null`:
+             *
+             *   static
+             *   // comment
+             *   {
+             *   }
+             *
+             * Example where this function returns `StaticBlock` node:
+             *
+             *   static
+             *   {
+             *   // comment
+             *   }
+             *
+             */
+            if (node && node.type === "StaticBlock") {
+                const openingBrace = sourceCode.getFirstToken(node, { skip: 1 }); // skip the `static` token
+
+                return token.range[0] >= openingBrace.range[0]
+                    ? node
+                    : null;
+            }
+
+            return node;
+        }
+
+        /**
+         * Returns whether or not comments are at the parent start or not.
+         * @param {token} token The Comment token.
+         * @param {string} nodeType The parent type to check against.
+         * @returns {boolean} True if the comment is at parent start.
+         */
+        function isCommentAtParentStart(token, nodeType) {
+            const parent = getParentNodeOfToken(token);
+
+            if (parent && isParentNodeType(parent, nodeType)) {
+                let parentStartNodeOrToken = parent;
+
+                if (parent.type === "StaticBlock") {
+                    parentStartNodeOrToken = sourceCode.getFirstToken(parent, { skip: 1 }); // opening brace of the static block
+                } else if (parent.type === "SwitchStatement") {
+                    parentStartNodeOrToken = sourceCode.getTokenAfter(parent.discriminant, {
+                        filter: astUtils.isOpeningBraceToken
+                    }); // opening brace of the switch statement
+                }
+
+                return token.loc.start.line - parentStartNodeOrToken.loc.start.line === 1;
+            }
+
+            return false;
+        }
+
+        /**
+         * Returns whether or not comments are at the parent end or not.
+         * @param {token} token The Comment token.
+         * @param {string} nodeType The parent type to check against.
+         * @returns {boolean} True if the comment is at parent end.
+         */
+        function isCommentAtParentEnd(token, nodeType) {
+            const parent = getParentNodeOfToken(token);
+
+            return !!parent && isParentNodeType(parent, nodeType) &&
+                    parent.loc.end.line - token.loc.end.line === 1;
+        }
+
+        /**
+         * Returns whether or not comments are at the block start or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at block start.
+         */
+        function isCommentAtBlockStart(token) {
+            return (
+                isCommentAtParentStart(token, "ClassBody") ||
+                isCommentAtParentStart(token, "BlockStatement") ||
+                isCommentAtParentStart(token, "StaticBlock") ||
+                isCommentAtParentStart(token, "SwitchCase") ||
+                isCommentAtParentStart(token, "SwitchStatement")
+            );
+        }
+
+        /**
+         * Returns whether or not comments are at the block end or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at block end.
+         */
+        function isCommentAtBlockEnd(token) {
+            return (
+                isCommentAtParentEnd(token, "ClassBody") ||
+                isCommentAtParentEnd(token, "BlockStatement") ||
+                isCommentAtParentEnd(token, "StaticBlock") ||
+                isCommentAtParentEnd(token, "SwitchCase") ||
+                isCommentAtParentEnd(token, "SwitchStatement")
+            );
+        }
+
+        /**
+         * Returns whether or not comments are at the class start or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at class start.
+         */
+        function isCommentAtClassStart(token) {
+            return isCommentAtParentStart(token, "ClassBody");
+        }
+
+        /**
+         * Returns whether or not comments are at the class end or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at class end.
+         */
+        function isCommentAtClassEnd(token) {
+            return isCommentAtParentEnd(token, "ClassBody");
+        }
+
+        /**
+         * Returns whether or not comments are at the object start or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at object start.
+         */
+        function isCommentAtObjectStart(token) {
+            return isCommentAtParentStart(token, "ObjectExpression") || isCommentAtParentStart(token, "ObjectPattern");
+        }
+
+        /**
+         * Returns whether or not comments are at the object end or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at object end.
+         */
+        function isCommentAtObjectEnd(token) {
+            return isCommentAtParentEnd(token, "ObjectExpression") || isCommentAtParentEnd(token, "ObjectPattern");
+        }
+
+        /**
+         * Returns whether or not comments are at the array start or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at array start.
+         */
+        function isCommentAtArrayStart(token) {
+            return isCommentAtParentStart(token, "ArrayExpression") || isCommentAtParentStart(token, "ArrayPattern");
+        }
+
+        /**
+         * Returns whether or not comments are at the array end or not.
+         * @param {token} token The Comment token.
+         * @returns {boolean} True if the comment is at array end.
+         */
+        function isCommentAtArrayEnd(token) {
+            return isCommentAtParentEnd(token, "ArrayExpression") || isCommentAtParentEnd(token, "ArrayPattern");
+        }
+
+        /**
+         * Checks if a comment token has lines around it (ignores inline comments)
+         * @param {token} token The Comment token.
+         * @param {Object} opts Options to determine the newline.
+         * @param {boolean} opts.after Should have a newline after this line.
+         * @param {boolean} opts.before Should have a newline before this line.
+         * @returns {void}
+         */
+        function checkForEmptyLine(token, opts) {
+            if (applyDefaultIgnorePatterns && defaultIgnoreRegExp.test(token.value)) {
+                return;
+            }
+
+            if (ignorePattern && customIgnoreRegExp.test(token.value)) {
+                return;
+            }
+
+            let after = opts.after,
+                before = opts.before;
+
+            const prevLineNum = token.loc.start.line - 1,
+                nextLineNum = token.loc.end.line + 1,
+                commentIsNotAlone = codeAroundComment(token);
+
+            const blockStartAllowed = options.allowBlockStart &&
+                    isCommentAtBlockStart(token) &&
+                    !(options.allowClassStart === false &&
+                    isCommentAtClassStart(token)),
+                blockEndAllowed = options.allowBlockEnd && isCommentAtBlockEnd(token) && !(options.allowClassEnd === false && isCommentAtClassEnd(token)),
+                classStartAllowed = options.allowClassStart && isCommentAtClassStart(token),
+                classEndAllowed = options.allowClassEnd && isCommentAtClassEnd(token),
+                objectStartAllowed = options.allowObjectStart && isCommentAtObjectStart(token),
+                objectEndAllowed = options.allowObjectEnd && isCommentAtObjectEnd(token),
+                arrayStartAllowed = options.allowArrayStart && isCommentAtArrayStart(token),
+                arrayEndAllowed = options.allowArrayEnd && isCommentAtArrayEnd(token);
+
+            const exceptionStartAllowed = blockStartAllowed || classStartAllowed || objectStartAllowed || arrayStartAllowed;
+            const exceptionEndAllowed = blockEndAllowed || classEndAllowed || objectEndAllowed || arrayEndAllowed;
+
+            // ignore top of the file and bottom of the file
+            if (prevLineNum < 1) {
+                before = false;
+            }
+            if (nextLineNum >= numLines) {
+                after = false;
+            }
+
+            // we ignore all inline comments
+            if (commentIsNotAlone) {
+                return;
+            }
+
+            const previousTokenOrComment = sourceCode.getTokenBefore(token, { includeComments: true });
+            const nextTokenOrComment = sourceCode.getTokenAfter(token, { includeComments: true });
+
+            // check for newline before
+            if (!exceptionStartAllowed && before && !commentAndEmptyLines.has(prevLineNum) &&
+                    !(astUtils.isCommentToken(previousTokenOrComment) && astUtils.isTokenOnSameLine(previousTokenOrComment, token))) {
+                const lineStart = token.range[0] - token.loc.start.column;
+                const range = [lineStart, lineStart];
+
+                context.report({
+                    node: token,
+                    messageId: "before",
+                    fix(fixer) {
+                        return fixer.insertTextBeforeRange(range, "\n");
+                    }
+                });
+            }
+
+            // check for newline after
+            if (!exceptionEndAllowed && after && !commentAndEmptyLines.has(nextLineNum) &&
+                    !(astUtils.isCommentToken(nextTokenOrComment) && astUtils.isTokenOnSameLine(token, nextTokenOrComment))) {
+                context.report({
+                    node: token,
+                    messageId: "after",
+                    fix(fixer) {
+                        return fixer.insertTextAfter(token, "\n");
+                    }
+                });
+            }
+
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program() {
+                comments.forEach(token => {
+                    if (token.type === "Line") {
+                        if (options.beforeLineComment || options.afterLineComment) {
+                            checkForEmptyLine(token, {
+                                after: options.afterLineComment,
+                                before: options.beforeLineComment
+                            });
+                        }
+                    } else if (token.type === "Block") {
+                        if (options.beforeBlockComment || options.afterBlockComment) {
+                            checkForEmptyLine(token, {
+                                after: options.afterBlockComment,
+                                before: options.beforeBlockComment
+                            });
+                        }
+                    } else if (token.type === "Shebang") {
+                        if (options.afterHashbangComment) {
+                            checkForEmptyLine(token, {
+                                after: options.afterHashbangComment,
+                                before: false
+                            });
+                        }
+                    }
+                });
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/lines-around-directive.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/lines-around-directive.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/lines-around-directive.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,201 @@
+/**
+ * @fileoverview Require or disallow newlines around directives.
+ * @author Kai Cataldo
+ * @deprecated in ESLint v4.0.0
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "Require or disallow newlines around directives",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/lines-around-directive"
+        },
+
+        schema: [{
+            oneOf: [
+                {
+                    enum: ["always", "never"]
+                },
+                {
+                    type: "object",
+                    properties: {
+                        before: {
+                            enum: ["always", "never"]
+                        },
+                        after: {
+                            enum: ["always", "never"]
+                        }
+                    },
+                    additionalProperties: false,
+                    minProperties: 2
+                }
+            ]
+        }],
+
+        fixable: "whitespace",
+        messages: {
+            expected: "Expected newline {{location}} \"{{value}}\" directive.",
+            unexpected: "Unexpected newline {{location}} \"{{value}}\" directive."
+        },
+        deprecated: true,
+        replacedBy: ["padding-line-between-statements"]
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const config = context.options[0] || "always";
+        const expectLineBefore = typeof config === "string" ? config : config.before;
+        const expectLineAfter = typeof config === "string" ? config : config.after;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Check if node is preceded by a blank newline.
+         * @param {ASTNode} node Node to check.
+         * @returns {boolean} Whether or not the passed in node is preceded by a blank newline.
+         */
+        function hasNewlineBefore(node) {
+            const tokenBefore = sourceCode.getTokenBefore(node, { includeComments: true });
+            const tokenLineBefore = tokenBefore ? tokenBefore.loc.end.line : 0;
+
+            return node.loc.start.line - tokenLineBefore >= 2;
+        }
+
+        /**
+         * Gets the last token of a node that is on the same line as the rest of the node.
+         * This will usually be the last token of the node, but it will be the second-to-last token if the node has a trailing
+         * semicolon on a different line.
+         * @param {ASTNode} node A directive node
+         * @returns {Token} The last token of the node on the line
+         */
+        function getLastTokenOnLine(node) {
+            const lastToken = sourceCode.getLastToken(node);
+            const secondToLastToken = sourceCode.getTokenBefore(lastToken);
+
+            return astUtils.isSemicolonToken(lastToken) && lastToken.loc.start.line > secondToLastToken.loc.end.line
+                ? secondToLastToken
+                : lastToken;
+        }
+
+        /**
+         * Check if node is followed by a blank newline.
+         * @param {ASTNode} node Node to check.
+         * @returns {boolean} Whether or not the passed in node is followed by a blank newline.
+         */
+        function hasNewlineAfter(node) {
+            const lastToken = getLastTokenOnLine(node);
+            const tokenAfter = sourceCode.getTokenAfter(lastToken, { includeComments: true });
+
+            return tokenAfter.loc.start.line - lastToken.loc.end.line >= 2;
+        }
+
+        /**
+         * Report errors for newlines around directives.
+         * @param {ASTNode} node Node to check.
+         * @param {string} location Whether the error was found before or after the directive.
+         * @param {boolean} expected Whether or not a newline was expected or unexpected.
+         * @returns {void}
+         */
+        function reportError(node, location, expected) {
+            context.report({
+                node,
+                messageId: expected ? "expected" : "unexpected",
+                data: {
+                    value: node.expression.value,
+                    location
+                },
+                fix(fixer) {
+                    const lastToken = getLastTokenOnLine(node);
+
+                    if (expected) {
+                        return location === "before" ? fixer.insertTextBefore(node, "\n") : fixer.insertTextAfter(lastToken, "\n");
+                    }
+                    return fixer.removeRange(location === "before" ? [node.range[0] - 1, node.range[0]] : [lastToken.range[1], lastToken.range[1] + 1]);
+                }
+            });
+        }
+
+        /**
+         * Check lines around directives in node
+         * @param {ASTNode} node node to check
+         * @returns {void}
+         */
+        function checkDirectives(node) {
+            const directives = astUtils.getDirectivePrologue(node);
+
+            if (!directives.length) {
+                return;
+            }
+
+            const firstDirective = directives[0];
+            const leadingComments = sourceCode.getCommentsBefore(firstDirective);
+
+            /*
+             * Only check before the first directive if it is preceded by a comment or if it is at the top of
+             * the file and expectLineBefore is set to "never". This is to not force a newline at the top of
+             * the file if there are no comments as well as for compatibility with padded-blocks.
+             */
+            if (leadingComments.length) {
+                if (expectLineBefore === "always" && !hasNewlineBefore(firstDirective)) {
+                    reportError(firstDirective, "before", true);
+                }
+
+                if (expectLineBefore === "never" && hasNewlineBefore(firstDirective)) {
+                    reportError(firstDirective, "before", false);
+                }
+            } else if (
+                node.type === "Program" &&
+                expectLineBefore === "never" &&
+                !leadingComments.length &&
+                hasNewlineBefore(firstDirective)
+            ) {
+                reportError(firstDirective, "before", false);
+            }
+
+            const lastDirective = directives[directives.length - 1];
+            const statements = node.type === "Program" ? node.body : node.body.body;
+
+            /*
+             * Do not check after the last directive if the body only
+             * contains a directive prologue and isn't followed by a comment to ensure
+             * this rule behaves well with padded-blocks.
+             */
+            if (lastDirective === statements[statements.length - 1] && !lastDirective.trailingComments) {
+                return;
+            }
+
+            if (expectLineAfter === "always" && !hasNewlineAfter(lastDirective)) {
+                reportError(lastDirective, "after", true);
+            }
+
+            if (expectLineAfter === "never" && hasNewlineAfter(lastDirective)) {
+                reportError(lastDirective, "after", false);
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: checkDirectives,
+            FunctionDeclaration: checkDirectives,
+            FunctionExpression: checkDirectives,
+            ArrowFunctionExpression: checkDirectives
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/lines-between-class-members.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/lines-between-class-members.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/lines-between-class-members.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,269 @@
+/**
+ * @fileoverview Rule to check empty newline between class members
+ * @author 薛定谔的猫<hh_2013@foxmail.com>
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Types of class members.
+ * Those have `test` method to check it matches to the given class member.
+ * @private
+ */
+const ClassMemberTypes = {
+    "*": { test: () => true },
+    field: { test: node => node.type === "PropertyDefinition" },
+    method: { test: node => node.type === "MethodDefinition" }
+};
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require or disallow an empty line between class members",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/lines-between-class-members"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                anyOf: [
+                    {
+                        type: "object",
+                        properties: {
+                            enforce: {
+                                type: "array",
+                                items: {
+                                    type: "object",
+                                    properties: {
+                                        blankLine: { enum: ["always", "never"] },
+                                        prev: { enum: ["method", "field", "*"] },
+                                        next: { enum: ["method", "field", "*"] }
+                                    },
+                                    additionalProperties: false,
+                                    required: ["blankLine", "prev", "next"]
+                                },
+                                minItems: 1
+                            }
+                        },
+                        additionalProperties: false,
+                        required: ["enforce"]
+                    },
+                    {
+                        enum: ["always", "never"]
+                    }
+                ]
+            },
+            {
+                type: "object",
+                properties: {
+                    exceptAfterSingleLine: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            never: "Unexpected blank line between class members.",
+            always: "Expected blank line between class members."
+        }
+    },
+
+    create(context) {
+
+        const options = [];
+
+        options[0] = context.options[0] || "always";
+        options[1] = context.options[1] || { exceptAfterSingleLine: false };
+
+        const configureList = typeof options[0] === "object" ? options[0].enforce : [{ blankLine: options[0], prev: "*", next: "*" }];
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Gets a pair of tokens that should be used to check lines between two class member nodes.
+         *
+         * In most cases, this returns the very last token of the current node and
+         * the very first token of the next node.
+         * For example:
+         *
+         *     class C {
+         *         x = 1;   // curLast: `;` nextFirst: `in`
+         *         in = 2
+         *     }
+         *
+         * There is only one exception. If the given node ends with a semicolon, and it looks like
+         * a semicolon-less style's semicolon - one that is not on the same line as the preceding
+         * token, but is on the line where the next class member starts - this returns the preceding
+         * token and the semicolon as boundary tokens.
+         * For example:
+         *
+         *     class C {
+         *         x = 1    // curLast: `1` nextFirst: `;`
+         *         ;in = 2
+         *     }
+         * When determining the desired layout of the code, we should treat this semicolon as
+         * a part of the next class member node instead of the one it technically belongs to.
+         * @param {ASTNode} curNode Current class member node.
+         * @param {ASTNode} nextNode Next class member node.
+         * @returns {Token} The actual last token of `node`.
+         * @private
+         */
+        function getBoundaryTokens(curNode, nextNode) {
+            const lastToken = sourceCode.getLastToken(curNode);
+            const prevToken = sourceCode.getTokenBefore(lastToken);
+            const nextToken = sourceCode.getFirstToken(nextNode); // skip possible lone `;` between nodes
+
+            const isSemicolonLessStyle = (
+                astUtils.isSemicolonToken(lastToken) &&
+                !astUtils.isTokenOnSameLine(prevToken, lastToken) &&
+                astUtils.isTokenOnSameLine(lastToken, nextToken)
+            );
+
+            return isSemicolonLessStyle
+                ? { curLast: prevToken, nextFirst: lastToken }
+                : { curLast: lastToken, nextFirst: nextToken };
+        }
+
+        /**
+         * Return the last token among the consecutive tokens that have no exceed max line difference in between, before the first token in the next member.
+         * @param {Token} prevLastToken The last token in the previous member node.
+         * @param {Token} nextFirstToken The first token in the next member node.
+         * @param {number} maxLine The maximum number of allowed line difference between consecutive tokens.
+         * @returns {Token} The last token among the consecutive tokens.
+         */
+        function findLastConsecutiveTokenAfter(prevLastToken, nextFirstToken, maxLine) {
+            const after = sourceCode.getTokenAfter(prevLastToken, { includeComments: true });
+
+            if (after !== nextFirstToken && after.loc.start.line - prevLastToken.loc.end.line <= maxLine) {
+                return findLastConsecutiveTokenAfter(after, nextFirstToken, maxLine);
+            }
+            return prevLastToken;
+        }
+
+        /**
+         * Return the first token among the consecutive tokens that have no exceed max line difference in between, after the last token in the previous member.
+         * @param {Token} nextFirstToken The first token in the next member node.
+         * @param {Token} prevLastToken The last token in the previous member node.
+         * @param {number} maxLine The maximum number of allowed line difference between consecutive tokens.
+         * @returns {Token} The first token among the consecutive tokens.
+         */
+        function findFirstConsecutiveTokenBefore(nextFirstToken, prevLastToken, maxLine) {
+            const before = sourceCode.getTokenBefore(nextFirstToken, { includeComments: true });
+
+            if (before !== prevLastToken && nextFirstToken.loc.start.line - before.loc.end.line <= maxLine) {
+                return findFirstConsecutiveTokenBefore(before, prevLastToken, maxLine);
+            }
+            return nextFirstToken;
+        }
+
+        /**
+         * Checks if there is a token or comment between two tokens.
+         * @param {Token} before The token before.
+         * @param {Token} after The token after.
+         * @returns {boolean} True if there is a token or comment between two tokens.
+         */
+        function hasTokenOrCommentBetween(before, after) {
+            return sourceCode.getTokensBetween(before, after, { includeComments: true }).length !== 0;
+        }
+
+        /**
+         * Checks whether the given node matches the given type.
+         * @param {ASTNode} node The class member node to check.
+         * @param {string} type The class member type to check.
+         * @returns {boolean} `true` if the class member node matched the type.
+         * @private
+         */
+        function match(node, type) {
+            return ClassMemberTypes[type].test(node);
+        }
+
+        /**
+         * Finds the last matched configuration from the configureList.
+         * @param {ASTNode} prevNode The previous node to match.
+         * @param {ASTNode} nextNode The current node to match.
+         * @returns {string|null} Padding type or `null` if no matches were found.
+         * @private
+         */
+        function getPaddingType(prevNode, nextNode) {
+            for (let i = configureList.length - 1; i >= 0; --i) {
+                const configure = configureList[i];
+                const matched =
+                    match(prevNode, configure.prev) &&
+                    match(nextNode, configure.next);
+
+                if (matched) {
+                    return configure.blankLine;
+                }
+            }
+            return null;
+        }
+
+        return {
+            ClassBody(node) {
+                const body = node.body;
+
+                for (let i = 0; i < body.length - 1; i++) {
+                    const curFirst = sourceCode.getFirstToken(body[i]);
+                    const { curLast, nextFirst } = getBoundaryTokens(body[i], body[i + 1]);
+                    const isMulti = !astUtils.isTokenOnSameLine(curFirst, curLast);
+                    const skip = !isMulti && options[1].exceptAfterSingleLine;
+                    const beforePadding = findLastConsecutiveTokenAfter(curLast, nextFirst, 1);
+                    const afterPadding = findFirstConsecutiveTokenBefore(nextFirst, curLast, 1);
+                    const isPadded = afterPadding.loc.start.line - beforePadding.loc.end.line > 1;
+                    const hasTokenInPadding = hasTokenOrCommentBetween(beforePadding, afterPadding);
+                    const curLineLastToken = findLastConsecutiveTokenAfter(curLast, nextFirst, 0);
+                    const paddingType = getPaddingType(body[i], body[i + 1]);
+
+                    if (paddingType === "never" && isPadded) {
+                        context.report({
+                            node: body[i + 1],
+                            messageId: "never",
+
+                            fix(fixer) {
+                                if (hasTokenInPadding) {
+                                    return null;
+                                }
+                                return fixer.replaceTextRange([beforePadding.range[1], afterPadding.range[0]], "\n");
+                            }
+                        });
+                    } else if (paddingType === "always" && !skip && !isPadded) {
+                        context.report({
+                            node: body[i + 1],
+                            messageId: "always",
+
+                            fix(fixer) {
+                                if (hasTokenInPadding) {
+                                    return null;
+                                }
+                                return fixer.insertTextAfter(curLineLastToken, "\n");
+                            }
+                        });
+                    }
+
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/logical-assignment-operators.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/logical-assignment-operators.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/logical-assignment-operators.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,504 @@
+/**
+ * @fileoverview Rule to replace assignment expressions with logical operator assignment
+ * @author Daniel Martens
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+const astUtils = require("./utils/ast-utils.js");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const baseTypes = new Set(["Identifier", "Super", "ThisExpression"]);
+
+/**
+ * Returns true iff either "undefined" or a void expression (eg. "void 0")
+ * @param {ASTNode} expression Expression to check
+ * @param {import('eslint-scope').Scope} scope Scope of the expression
+ * @returns {boolean} True iff "undefined" or "void ..."
+ */
+function isUndefined(expression, scope) {
+    if (expression.type === "Identifier" && expression.name === "undefined") {
+        return astUtils.isReferenceToGlobalVariable(scope, expression);
+    }
+
+    return expression.type === "UnaryExpression" &&
+           expression.operator === "void" &&
+           expression.argument.type === "Literal" &&
+           expression.argument.value === 0;
+}
+
+/**
+ * Returns true iff the reference is either an identifier or member expression
+ * @param {ASTNode} expression Expression to check
+ * @returns {boolean} True for identifiers and member expressions
+ */
+function isReference(expression) {
+    return (expression.type === "Identifier" && expression.name !== "undefined") ||
+           expression.type === "MemberExpression";
+}
+
+/**
+ * Returns true iff the expression checks for nullish with loose equals.
+ * Examples: value == null, value == void 0
+ * @param {ASTNode} expression Test condition
+ * @param {import('eslint-scope').Scope} scope Scope of the expression
+ * @returns {boolean} True iff implicit nullish comparison
+ */
+function isImplicitNullishComparison(expression, scope) {
+    if (expression.type !== "BinaryExpression" || expression.operator !== "==") {
+        return false;
+    }
+
+    const reference = isReference(expression.left) ? "left" : "right";
+    const nullish = reference === "left" ? "right" : "left";
+
+    return isReference(expression[reference]) &&
+           (astUtils.isNullLiteral(expression[nullish]) || isUndefined(expression[nullish], scope));
+}
+
+/**
+ * Condition with two equal comparisons.
+ * @param {ASTNode} expression Condition
+ * @returns {boolean} True iff matches ? === ? || ? === ?
+ */
+function isDoubleComparison(expression) {
+    return expression.type === "LogicalExpression" &&
+           expression.operator === "||" &&
+           expression.left.type === "BinaryExpression" &&
+           expression.left.operator === "===" &&
+           expression.right.type === "BinaryExpression" &&
+           expression.right.operator === "===";
+}
+
+/**
+ * Returns true iff the expression checks for undefined and null.
+ * Example: value === null || value === undefined
+ * @param {ASTNode} expression Test condition
+ * @param {import('eslint-scope').Scope} scope Scope of the expression
+ * @returns {boolean} True iff explicit nullish comparison
+ */
+function isExplicitNullishComparison(expression, scope) {
+    if (!isDoubleComparison(expression)) {
+        return false;
+    }
+    const leftReference = isReference(expression.left.left) ? "left" : "right";
+    const leftNullish = leftReference === "left" ? "right" : "left";
+    const rightReference = isReference(expression.right.left) ? "left" : "right";
+    const rightNullish = rightReference === "left" ? "right" : "left";
+
+    return astUtils.isSameReference(expression.left[leftReference], expression.right[rightReference]) &&
+           ((astUtils.isNullLiteral(expression.left[leftNullish]) && isUndefined(expression.right[rightNullish], scope)) ||
+           (isUndefined(expression.left[leftNullish], scope) && astUtils.isNullLiteral(expression.right[rightNullish])));
+}
+
+/**
+ * Returns true for Boolean(arg) calls
+ * @param {ASTNode} expression Test condition
+ * @param {import('eslint-scope').Scope} scope Scope of the expression
+ * @returns {boolean} Whether the expression is a boolean cast
+ */
+function isBooleanCast(expression, scope) {
+    return expression.type === "CallExpression" &&
+           expression.callee.name === "Boolean" &&
+           expression.arguments.length === 1 &&
+           astUtils.isReferenceToGlobalVariable(scope, expression.callee);
+}
+
+/**
+ * Returns true for:
+ * truthiness checks:  value, Boolean(value), !!value
+ * falsiness checks:   !value, !Boolean(value)
+ * nullish checks:     value == null, value === undefined || value === null
+ * @param {ASTNode} expression Test condition
+ * @param {import('eslint-scope').Scope} scope Scope of the expression
+ * @returns {?{ reference: ASTNode, operator: '??'|'||'|'&&'}} Null if not a known existence
+ */
+function getExistence(expression, scope) {
+    const isNegated = expression.type === "UnaryExpression" && expression.operator === "!";
+    const base = isNegated ? expression.argument : expression;
+
+    switch (true) {
+        case isReference(base):
+            return { reference: base, operator: isNegated ? "||" : "&&" };
+        case base.type === "UnaryExpression" && base.operator === "!" && isReference(base.argument):
+            return { reference: base.argument, operator: "&&" };
+        case isBooleanCast(base, scope) && isReference(base.arguments[0]):
+            return { reference: base.arguments[0], operator: isNegated ? "||" : "&&" };
+        case isImplicitNullishComparison(expression, scope):
+            return { reference: isReference(expression.left) ? expression.left : expression.right, operator: "??" };
+        case isExplicitNullishComparison(expression, scope):
+            return { reference: isReference(expression.left.left) ? expression.left.left : expression.left.right, operator: "??" };
+        default: return null;
+    }
+}
+
+/**
+ * Returns true iff the node is inside a with block
+ * @param {ASTNode} node Node to check
+ * @returns {boolean} True iff passed node is inside a with block
+ */
+function isInsideWithBlock(node) {
+    if (node.type === "Program") {
+        return false;
+    }
+
+    return node.parent.type === "WithStatement" && node.parent.body === node ? true : isInsideWithBlock(node.parent);
+}
+
+/**
+ * Gets the leftmost operand of a consecutive logical expression.
+ * @param {SourceCode} sourceCode The ESLint source code object
+ * @param {LogicalExpression} node LogicalExpression
+ * @returns {Expression} Leftmost operand
+ */
+function getLeftmostOperand(sourceCode, node) {
+    let left = node.left;
+
+    while (left.type === "LogicalExpression" && left.operator === node.operator) {
+
+        if (astUtils.isParenthesised(sourceCode, left)) {
+
+            /*
+             * It should have associativity,
+             * but ignore it if use parentheses to make the evaluation order clear.
+             */
+            return left;
+        }
+        left = left.left;
+    }
+    return left;
+
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require or disallow logical assignment operator shorthand",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/logical-assignment-operators"
+        },
+
+        schema: {
+            type: "array",
+            oneOf: [{
+                items: [
+                    { const: "always" },
+                    {
+                        type: "object",
+                        properties: {
+                            enforceForIfStatements: {
+                                type: "boolean"
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ],
+                minItems: 0, // 0 for allowing passing no options
+                maxItems: 2
+            }, {
+                items: [{ const: "never" }],
+                minItems: 1,
+                maxItems: 1
+            }]
+        },
+        fixable: "code",
+        hasSuggestions: true,
+        messages: {
+            assignment: "Assignment (=) can be replaced with operator assignment ({{operator}}).",
+            useLogicalOperator: "Convert this assignment to use the operator {{ operator }}.",
+            logical: "Logical expression can be replaced with an assignment ({{ operator }}).",
+            convertLogical: "Replace this logical expression with an assignment with the operator {{ operator }}.",
+            if: "'if' statement can be replaced with a logical operator assignment with operator {{ operator }}.",
+            convertIf: "Replace this 'if' statement with a logical assignment with operator {{ operator }}.",
+            unexpected: "Unexpected logical operator assignment ({{operator}}) shorthand.",
+            separate: "Separate the logical assignment into an assignment with a logical operator."
+        }
+    },
+
+    create(context) {
+        const mode = context.options[0] === "never" ? "never" : "always";
+        const checkIf = mode === "always" && context.options.length > 1 && context.options[1].enforceForIfStatements;
+        const sourceCode = context.sourceCode;
+        const isStrict = sourceCode.getScope(sourceCode.ast).isStrict;
+
+        /**
+         * Returns false if the access could be a getter
+         * @param {ASTNode} node Assignment expression
+         * @returns {boolean} True iff the fix is safe
+         */
+        function cannotBeGetter(node) {
+            return node.type === "Identifier" &&
+                   (isStrict || !isInsideWithBlock(node));
+        }
+
+        /**
+         * Check whether only a single property is accessed
+         * @param {ASTNode} node reference
+         * @returns {boolean} True iff a single property is accessed
+         */
+        function accessesSingleProperty(node) {
+            if (!isStrict && isInsideWithBlock(node)) {
+                return node.type === "Identifier";
+            }
+
+            return node.type === "MemberExpression" &&
+                   baseTypes.has(node.object.type) &&
+                   (!node.computed || (node.property.type !== "MemberExpression" && node.property.type !== "ChainExpression"));
+        }
+
+        /**
+         * Adds a fixer or suggestion whether on the fix is safe.
+         * @param {{ messageId: string, node: ASTNode }} descriptor Report descriptor without fix or suggest
+         * @param {{ messageId: string, fix: Function }} suggestion Adds the fix or the whole suggestion as only element in "suggest" to suggestion
+         * @param {boolean} shouldBeFixed Fix iff the condition is true
+         * @returns {Object} Descriptor with either an added fix or suggestion
+         */
+        function createConditionalFixer(descriptor, suggestion, shouldBeFixed) {
+            if (shouldBeFixed) {
+                return {
+                    ...descriptor,
+                    fix: suggestion.fix
+                };
+            }
+
+            return {
+                ...descriptor,
+                suggest: [suggestion]
+            };
+        }
+
+
+        /**
+         * Returns the operator token for assignments and binary expressions
+         * @param {ASTNode} node AssignmentExpression or BinaryExpression
+         * @returns {import('eslint').AST.Token} Operator token between the left and right expression
+         */
+        function getOperatorToken(node) {
+            return sourceCode.getFirstTokenBetween(node.left, node.right, token => token.value === node.operator);
+        }
+
+        if (mode === "never") {
+            return {
+
+                // foo ||= bar
+                "AssignmentExpression"(assignment) {
+                    if (!astUtils.isLogicalAssignmentOperator(assignment.operator)) {
+                        return;
+                    }
+
+                    const descriptor = {
+                        messageId: "unexpected",
+                        node: assignment,
+                        data: { operator: assignment.operator }
+                    };
+                    const suggestion = {
+                        messageId: "separate",
+                        *fix(ruleFixer) {
+                            if (sourceCode.getCommentsInside(assignment).length > 0) {
+                                return;
+                            }
+
+                            const operatorToken = getOperatorToken(assignment);
+
+                            // -> foo = bar
+                            yield ruleFixer.replaceText(operatorToken, "=");
+
+                            const assignmentText = sourceCode.getText(assignment.left);
+                            const operator = assignment.operator.slice(0, -1);
+
+                            // -> foo = foo || bar
+                            yield ruleFixer.insertTextAfter(operatorToken, ` ${assignmentText} ${operator}`);
+
+                            const precedence = astUtils.getPrecedence(assignment.right) <= astUtils.getPrecedence({ type: "LogicalExpression", operator });
+
+                            // ?? and || / && cannot be mixed but have same precedence
+                            const mixed = assignment.operator === "??=" && astUtils.isLogicalExpression(assignment.right);
+
+                            if (!astUtils.isParenthesised(sourceCode, assignment.right) && (precedence || mixed)) {
+
+                                // -> foo = foo || (bar)
+                                yield ruleFixer.insertTextBefore(assignment.right, "(");
+                                yield ruleFixer.insertTextAfter(assignment.right, ")");
+                            }
+                        }
+                    };
+
+                    context.report(createConditionalFixer(descriptor, suggestion, cannotBeGetter(assignment.left)));
+                }
+            };
+        }
+
+        return {
+
+            // foo = foo || bar
+            "AssignmentExpression[operator='='][right.type='LogicalExpression']"(assignment) {
+                const leftOperand = getLeftmostOperand(sourceCode, assignment.right);
+
+                if (!astUtils.isSameReference(assignment.left, leftOperand)
+                ) {
+                    return;
+                }
+
+                const descriptor = {
+                    messageId: "assignment",
+                    node: assignment,
+                    data: { operator: `${assignment.right.operator}=` }
+                };
+                const suggestion = {
+                    messageId: "useLogicalOperator",
+                    data: { operator: `${assignment.right.operator}=` },
+                    *fix(ruleFixer) {
+                        if (sourceCode.getCommentsInside(assignment).length > 0) {
+                            return;
+                        }
+
+                        // No need for parenthesis around the assignment based on precedence as the precedence stays the same even with changed operator
+                        const assignmentOperatorToken = getOperatorToken(assignment);
+
+                        // -> foo ||= foo || bar
+                        yield ruleFixer.insertTextBefore(assignmentOperatorToken, assignment.right.operator);
+
+                        // -> foo ||= bar
+                        const logicalOperatorToken = getOperatorToken(leftOperand.parent);
+                        const firstRightOperandToken = sourceCode.getTokenAfter(logicalOperatorToken);
+
+                        yield ruleFixer.removeRange([leftOperand.parent.range[0], firstRightOperandToken.range[0]]);
+                    }
+                };
+
+                context.report(createConditionalFixer(descriptor, suggestion, cannotBeGetter(assignment.left)));
+            },
+
+            // foo || (foo = bar)
+            'LogicalExpression[right.type="AssignmentExpression"][right.operator="="]'(logical) {
+
+                // Right side has to be parenthesized, otherwise would be parsed as (foo || foo) = bar which is illegal
+                if (isReference(logical.left) && astUtils.isSameReference(logical.left, logical.right.left)) {
+                    const descriptor = {
+                        messageId: "logical",
+                        node: logical,
+                        data: { operator: `${logical.operator}=` }
+                    };
+                    const suggestion = {
+                        messageId: "convertLogical",
+                        data: { operator: `${logical.operator}=` },
+                        *fix(ruleFixer) {
+                            if (sourceCode.getCommentsInside(logical).length > 0) {
+                                return;
+                            }
+
+                            const parentPrecedence = astUtils.getPrecedence(logical.parent);
+                            const requiresOuterParenthesis = logical.parent.type !== "ExpressionStatement" && (
+                                parentPrecedence === -1 ||
+                                astUtils.getPrecedence({ type: "AssignmentExpression" }) < parentPrecedence
+                            );
+
+                            if (!astUtils.isParenthesised(sourceCode, logical) && requiresOuterParenthesis) {
+                                yield ruleFixer.insertTextBefore(logical, "(");
+                                yield ruleFixer.insertTextAfter(logical, ")");
+                            }
+
+                            // Also removes all opening parenthesis
+                            yield ruleFixer.removeRange([logical.range[0], logical.right.range[0]]); // -> foo = bar)
+
+                            // Also removes all ending parenthesis
+                            yield ruleFixer.removeRange([logical.right.range[1], logical.range[1]]); // -> foo = bar
+
+                            const operatorToken = getOperatorToken(logical.right);
+
+                            yield ruleFixer.insertTextBefore(operatorToken, logical.operator); // -> foo ||= bar
+                        }
+                    };
+                    const fix = cannotBeGetter(logical.left) || accessesSingleProperty(logical.left);
+
+                    context.report(createConditionalFixer(descriptor, suggestion, fix));
+                }
+            },
+
+            // if (foo) foo = bar
+            "IfStatement[alternate=null]"(ifNode) {
+                if (!checkIf) {
+                    return;
+                }
+
+                const hasBody = ifNode.consequent.type === "BlockStatement";
+
+                if (hasBody && ifNode.consequent.body.length !== 1) {
+                    return;
+                }
+
+                const body = hasBody ? ifNode.consequent.body[0] : ifNode.consequent;
+                const scope = sourceCode.getScope(ifNode);
+                const existence = getExistence(ifNode.test, scope);
+
+                if (
+                    body.type === "ExpressionStatement" &&
+                    body.expression.type === "AssignmentExpression" &&
+                    body.expression.operator === "=" &&
+                    existence !== null &&
+                    astUtils.isSameReference(existence.reference, body.expression.left)
+                ) {
+                    const descriptor = {
+                        messageId: "if",
+                        node: ifNode,
+                        data: { operator: `${existence.operator}=` }
+                    };
+                    const suggestion = {
+                        messageId: "convertIf",
+                        data: { operator: `${existence.operator}=` },
+                        *fix(ruleFixer) {
+                            if (sourceCode.getCommentsInside(ifNode).length > 0) {
+                                return;
+                            }
+
+                            const firstBodyToken = sourceCode.getFirstToken(body);
+                            const prevToken = sourceCode.getTokenBefore(ifNode);
+
+                            if (
+                                prevToken !== null &&
+                                prevToken.value !== ";" &&
+                                prevToken.value !== "{" &&
+                                firstBodyToken.type !== "Identifier" &&
+                                firstBodyToken.type !== "Keyword"
+                            ) {
+
+                                // Do not fix if the fixed statement could be part of the previous statement (eg. fn() if (a == null) (a) = b --> fn()(a) ??= b)
+                                return;
+                            }
+
+
+                            const operatorToken = getOperatorToken(body.expression);
+
+                            yield ruleFixer.insertTextBefore(operatorToken, existence.operator); // -> if (foo) foo ||= bar
+
+                            yield ruleFixer.removeRange([ifNode.range[0], body.range[0]]); // -> foo ||= bar
+
+                            yield ruleFixer.removeRange([body.range[1], ifNode.range[1]]); // -> foo ||= bar, only present if "if" had a body
+
+                            const nextToken = sourceCode.getTokenAfter(body.expression);
+
+                            if (hasBody && (nextToken !== null && nextToken.value !== ";")) {
+                                yield ruleFixer.insertTextAfter(ifNode, ";");
+                            }
+                        }
+                    };
+                    const shouldBeFixed = cannotBeGetter(existence.reference) ||
+                                          (ifNode.test.type !== "LogicalExpression" && accessesSingleProperty(existence.reference));
+
+                    context.report(createConditionalFixer(descriptor, suggestion, shouldBeFixed));
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/max-classes-per-file.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/max-classes-per-file.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/max-classes-per-file.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,89 @@
+/**
+ * @fileoverview Enforce a maximum number of classes per file
+ * @author James Garbutt <https://github.com/43081j>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce a maximum number of classes per file",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/max-classes-per-file"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 1
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            ignoreExpressions: {
+                                type: "boolean"
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 1
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            maximumExceeded: "File has too many classes ({{ classCount }}). Maximum allowed is {{ max }}."
+        }
+    },
+    create(context) {
+        const [option = {}] = context.options;
+        const [ignoreExpressions, max] = typeof option === "number"
+            ? [false, option || 1]
+            : [option.ignoreExpressions, option.max || 1];
+
+        let classCount = 0;
+
+        return {
+            Program() {
+                classCount = 0;
+            },
+            "Program:exit"(node) {
+                if (classCount > max) {
+                    context.report({
+                        node,
+                        messageId: "maximumExceeded",
+                        data: {
+                            classCount,
+                            max
+                        }
+                    });
+                }
+            },
+            "ClassDeclaration"() {
+                classCount++;
+            },
+            "ClassExpression"() {
+                if (!ignoreExpressions) {
+                    classCount++;
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/max-depth.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/max-depth.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/max-depth.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,156 @@
+/**
+ * @fileoverview A rule to set the maximum depth block can be nested in a function.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce a maximum depth that blocks can be nested",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/max-depth"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            maximum: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+        messages: {
+            tooDeeply: "Blocks are nested too deeply ({{depth}}). Maximum allowed is {{maxDepth}}."
+        }
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const functionStack = [],
+            option = context.options[0];
+        let maxDepth = 4;
+
+        if (
+            typeof option === "object" &&
+            (Object.prototype.hasOwnProperty.call(option, "maximum") || Object.prototype.hasOwnProperty.call(option, "max"))
+        ) {
+            maxDepth = option.maximum || option.max;
+        }
+        if (typeof option === "number") {
+            maxDepth = option;
+        }
+
+        /**
+         * When parsing a new function, store it in our function stack
+         * @returns {void}
+         * @private
+         */
+        function startFunction() {
+            functionStack.push(0);
+        }
+
+        /**
+         * When parsing is done then pop out the reference
+         * @returns {void}
+         * @private
+         */
+        function endFunction() {
+            functionStack.pop();
+        }
+
+        /**
+         * Save the block and Evaluate the node
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function pushBlock(node) {
+            const len = ++functionStack[functionStack.length - 1];
+
+            if (len > maxDepth) {
+                context.report({ node, messageId: "tooDeeply", data: { depth: len, maxDepth } });
+            }
+        }
+
+        /**
+         * Pop the saved block
+         * @returns {void}
+         * @private
+         */
+        function popBlock() {
+            functionStack[functionStack.length - 1]--;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: startFunction,
+            FunctionDeclaration: startFunction,
+            FunctionExpression: startFunction,
+            ArrowFunctionExpression: startFunction,
+            StaticBlock: startFunction,
+
+            IfStatement(node) {
+                if (node.parent.type !== "IfStatement") {
+                    pushBlock(node);
+                }
+            },
+            SwitchStatement: pushBlock,
+            TryStatement: pushBlock,
+            DoWhileStatement: pushBlock,
+            WhileStatement: pushBlock,
+            WithStatement: pushBlock,
+            ForStatement: pushBlock,
+            ForInStatement: pushBlock,
+            ForOfStatement: pushBlock,
+
+            "IfStatement:exit": popBlock,
+            "SwitchStatement:exit": popBlock,
+            "TryStatement:exit": popBlock,
+            "DoWhileStatement:exit": popBlock,
+            "WhileStatement:exit": popBlock,
+            "WithStatement:exit": popBlock,
+            "ForStatement:exit": popBlock,
+            "ForInStatement:exit": popBlock,
+            "ForOfStatement:exit": popBlock,
+
+            "FunctionDeclaration:exit": endFunction,
+            "FunctionExpression:exit": endFunction,
+            "ArrowFunctionExpression:exit": endFunction,
+            "StaticBlock:exit": endFunction,
+            "Program:exit": endFunction
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/max-len.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/max-len.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/max-len.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,440 @@
+/**
+ * @fileoverview Rule to check for max length on a line.
+ * @author Matt DuVall <http://www.mattduvall.com>
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const OPTIONS_SCHEMA = {
+    type: "object",
+    properties: {
+        code: {
+            type: "integer",
+            minimum: 0
+        },
+        comments: {
+            type: "integer",
+            minimum: 0
+        },
+        tabWidth: {
+            type: "integer",
+            minimum: 0
+        },
+        ignorePattern: {
+            type: "string"
+        },
+        ignoreComments: {
+            type: "boolean"
+        },
+        ignoreStrings: {
+            type: "boolean"
+        },
+        ignoreUrls: {
+            type: "boolean"
+        },
+        ignoreTemplateLiterals: {
+            type: "boolean"
+        },
+        ignoreRegExpLiterals: {
+            type: "boolean"
+        },
+        ignoreTrailingComments: {
+            type: "boolean"
+        }
+    },
+    additionalProperties: false
+};
+
+const OPTIONS_OR_INTEGER_SCHEMA = {
+    anyOf: [
+        OPTIONS_SCHEMA,
+        {
+            type: "integer",
+            minimum: 0
+        }
+    ]
+};
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce a maximum line length",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/max-len"
+        },
+
+        schema: [
+            OPTIONS_OR_INTEGER_SCHEMA,
+            OPTIONS_OR_INTEGER_SCHEMA,
+            OPTIONS_SCHEMA
+        ],
+        messages: {
+            max: "This line has a length of {{lineLength}}. Maximum allowed is {{maxLength}}.",
+            maxComment: "This line has a comment length of {{lineLength}}. Maximum allowed is {{maxCommentLength}}."
+        }
+    },
+
+    create(context) {
+
+        /*
+         * Inspired by http://tools.ietf.org/html/rfc3986#appendix-B, however:
+         * - They're matching an entire string that we know is a URI
+         * - We're matching part of a string where we think there *might* be a URL
+         * - We're only concerned about URLs, as picking out any URI would cause
+         *   too many false positives
+         * - We don't care about matching the entire URL, any small segment is fine
+         */
+        const URL_REGEXP = /[^:/?#]:\/\/[^?#]/u;
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Computes the length of a line that may contain tabs. The width of each
+         * tab will be the number of spaces to the next tab stop.
+         * @param {string} line The line.
+         * @param {int} tabWidth The width of each tab stop in spaces.
+         * @returns {int} The computed line length.
+         * @private
+         */
+        function computeLineLength(line, tabWidth) {
+            let extraCharacterCount = 0;
+
+            line.replace(/\t/gu, (match, offset) => {
+                const totalOffset = offset + extraCharacterCount,
+                    previousTabStopOffset = tabWidth ? totalOffset % tabWidth : 0,
+                    spaceCount = tabWidth - previousTabStopOffset;
+
+                extraCharacterCount += spaceCount - 1; // -1 for the replaced tab
+            });
+            return Array.from(line).length + extraCharacterCount;
+        }
+
+        // The options object must be the last option specified…
+        const options = Object.assign({}, context.options[context.options.length - 1]);
+
+        // …but max code length…
+        if (typeof context.options[0] === "number") {
+            options.code = context.options[0];
+        }
+
+        // …and tabWidth can be optionally specified directly as integers.
+        if (typeof context.options[1] === "number") {
+            options.tabWidth = context.options[1];
+        }
+
+        const maxLength = typeof options.code === "number" ? options.code : 80,
+            tabWidth = typeof options.tabWidth === "number" ? options.tabWidth : 4,
+            ignoreComments = !!options.ignoreComments,
+            ignoreStrings = !!options.ignoreStrings,
+            ignoreTemplateLiterals = !!options.ignoreTemplateLiterals,
+            ignoreRegExpLiterals = !!options.ignoreRegExpLiterals,
+            ignoreTrailingComments = !!options.ignoreTrailingComments || !!options.ignoreComments,
+            ignoreUrls = !!options.ignoreUrls,
+            maxCommentLength = options.comments;
+        let ignorePattern = options.ignorePattern || null;
+
+        if (ignorePattern) {
+            ignorePattern = new RegExp(ignorePattern, "u");
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Tells if a given comment is trailing: it starts on the current line and
+         * extends to or past the end of the current line.
+         * @param {string} line The source line we want to check for a trailing comment on
+         * @param {number} lineNumber The one-indexed line number for line
+         * @param {ASTNode} comment The comment to inspect
+         * @returns {boolean} If the comment is trailing on the given line
+         */
+        function isTrailingComment(line, lineNumber, comment) {
+            return comment &&
+                (comment.loc.start.line === lineNumber && lineNumber <= comment.loc.end.line) &&
+                (comment.loc.end.line > lineNumber || comment.loc.end.column === line.length);
+        }
+
+        /**
+         * Tells if a comment encompasses the entire line.
+         * @param {string} line The source line with a trailing comment
+         * @param {number} lineNumber The one-indexed line number this is on
+         * @param {ASTNode} comment The comment to remove
+         * @returns {boolean} If the comment covers the entire line
+         */
+        function isFullLineComment(line, lineNumber, comment) {
+            const start = comment.loc.start,
+                end = comment.loc.end,
+                isFirstTokenOnLine = !line.slice(0, comment.loc.start.column).trim();
+
+            return comment &&
+                (start.line < lineNumber || (start.line === lineNumber && isFirstTokenOnLine)) &&
+                (end.line > lineNumber || (end.line === lineNumber && end.column === line.length));
+        }
+
+        /**
+         * Check if a node is a JSXEmptyExpression contained in a single line JSXExpressionContainer.
+         * @param {ASTNode} node A node to check.
+         * @returns {boolean} True if the node is a JSXEmptyExpression contained in a single line JSXExpressionContainer.
+         */
+        function isJSXEmptyExpressionInSingleLineContainer(node) {
+            if (!node || !node.parent || node.type !== "JSXEmptyExpression" || node.parent.type !== "JSXExpressionContainer") {
+                return false;
+            }
+
+            const parent = node.parent;
+
+            return parent.loc.start.line === parent.loc.end.line;
+        }
+
+        /**
+         * Gets the line after the comment and any remaining trailing whitespace is
+         * stripped.
+         * @param {string} line The source line with a trailing comment
+         * @param {ASTNode} comment The comment to remove
+         * @returns {string} Line without comment and trailing whitespace
+         */
+        function stripTrailingComment(line, comment) {
+
+            // loc.column is zero-indexed
+            return line.slice(0, comment.loc.start.column).replace(/\s+$/u, "");
+        }
+
+        /**
+         * Ensure that an array exists at [key] on `object`, and add `value` to it.
+         * @param {Object} object the object to mutate
+         * @param {string} key the object's key
+         * @param {any} value the value to add
+         * @returns {void}
+         * @private
+         */
+        function ensureArrayAndPush(object, key, value) {
+            if (!Array.isArray(object[key])) {
+                object[key] = [];
+            }
+            object[key].push(value);
+        }
+
+        /**
+         * Retrieves an array containing all strings (" or ') in the source code.
+         * @returns {ASTNode[]} An array of string nodes.
+         */
+        function getAllStrings() {
+            return sourceCode.ast.tokens.filter(token => (token.type === "String" ||
+                (token.type === "JSXText" && sourceCode.getNodeByRangeIndex(token.range[0] - 1).type === "JSXAttribute")));
+        }
+
+        /**
+         * Retrieves an array containing all template literals in the source code.
+         * @returns {ASTNode[]} An array of template literal nodes.
+         */
+        function getAllTemplateLiterals() {
+            return sourceCode.ast.tokens.filter(token => token.type === "Template");
+        }
+
+
+        /**
+         * Retrieves an array containing all RegExp literals in the source code.
+         * @returns {ASTNode[]} An array of RegExp literal nodes.
+         */
+        function getAllRegExpLiterals() {
+            return sourceCode.ast.tokens.filter(token => token.type === "RegularExpression");
+        }
+
+        /**
+         *
+         * reduce an array of AST nodes by line number, both start and end.
+         * @param {ASTNode[]} arr array of AST nodes
+         * @returns {Object} accululated AST nodes
+         */
+        function groupArrayByLineNumber(arr) {
+            const obj = {};
+
+            for (let i = 0; i < arr.length; i++) {
+                const node = arr[i];
+
+                for (let j = node.loc.start.line; j <= node.loc.end.line; ++j) {
+                    ensureArrayAndPush(obj, j, node);
+                }
+            }
+            return obj;
+        }
+
+        /**
+         * Returns an array of all comments in the source code.
+         * If the element in the array is a JSXEmptyExpression contained with a single line JSXExpressionContainer,
+         * the element is changed with JSXExpressionContainer node.
+         * @returns {ASTNode[]} An array of comment nodes
+         */
+        function getAllComments() {
+            const comments = [];
+
+            sourceCode.getAllComments()
+                .forEach(commentNode => {
+                    const containingNode = sourceCode.getNodeByRangeIndex(commentNode.range[0]);
+
+                    if (isJSXEmptyExpressionInSingleLineContainer(containingNode)) {
+
+                        // push a unique node only
+                        if (comments[comments.length - 1] !== containingNode.parent) {
+                            comments.push(containingNode.parent);
+                        }
+                    } else {
+                        comments.push(commentNode);
+                    }
+                });
+
+            return comments;
+        }
+
+        /**
+         * Check the program for max length
+         * @param {ASTNode} node Node to examine
+         * @returns {void}
+         * @private
+         */
+        function checkProgramForMaxLength(node) {
+
+            // split (honors line-ending)
+            const lines = sourceCode.lines,
+
+                // list of comments to ignore
+                comments = ignoreComments || maxCommentLength || ignoreTrailingComments ? getAllComments() : [];
+
+            // we iterate over comments in parallel with the lines
+            let commentsIndex = 0;
+
+            const strings = getAllStrings();
+            const stringsByLine = groupArrayByLineNumber(strings);
+
+            const templateLiterals = getAllTemplateLiterals();
+            const templateLiteralsByLine = groupArrayByLineNumber(templateLiterals);
+
+            const regExpLiterals = getAllRegExpLiterals();
+            const regExpLiteralsByLine = groupArrayByLineNumber(regExpLiterals);
+
+            lines.forEach((line, i) => {
+
+                // i is zero-indexed, line numbers are one-indexed
+                const lineNumber = i + 1;
+
+                /*
+                 * if we're checking comment length; we need to know whether this
+                 * line is a comment
+                 */
+                let lineIsComment = false;
+                let textToMeasure;
+
+                /*
+                 * We can short-circuit the comment checks if we're already out of
+                 * comments to check.
+                 */
+                if (commentsIndex < comments.length) {
+                    let comment = null;
+
+                    // iterate over comments until we find one past the current line
+                    do {
+                        comment = comments[++commentsIndex];
+                    } while (comment && comment.loc.start.line <= lineNumber);
+
+                    // and step back by one
+                    comment = comments[--commentsIndex];
+
+                    if (isFullLineComment(line, lineNumber, comment)) {
+                        lineIsComment = true;
+                        textToMeasure = line;
+                    } else if (ignoreTrailingComments && isTrailingComment(line, lineNumber, comment)) {
+                        textToMeasure = stripTrailingComment(line, comment);
+
+                        // ignore multiple trailing comments in the same line
+                        let lastIndex = commentsIndex;
+
+                        while (isTrailingComment(textToMeasure, lineNumber, comments[--lastIndex])) {
+                            textToMeasure = stripTrailingComment(textToMeasure, comments[lastIndex]);
+                        }
+                    } else {
+                        textToMeasure = line;
+                    }
+                } else {
+                    textToMeasure = line;
+                }
+                if (ignorePattern && ignorePattern.test(textToMeasure) ||
+                    ignoreUrls && URL_REGEXP.test(textToMeasure) ||
+                    ignoreStrings && stringsByLine[lineNumber] ||
+                    ignoreTemplateLiterals && templateLiteralsByLine[lineNumber] ||
+                    ignoreRegExpLiterals && regExpLiteralsByLine[lineNumber]
+                ) {
+
+                    // ignore this line
+                    return;
+                }
+
+                const lineLength = computeLineLength(textToMeasure, tabWidth);
+                const commentLengthApplies = lineIsComment && maxCommentLength;
+
+                if (lineIsComment && ignoreComments) {
+                    return;
+                }
+
+                const loc = {
+                    start: {
+                        line: lineNumber,
+                        column: 0
+                    },
+                    end: {
+                        line: lineNumber,
+                        column: textToMeasure.length
+                    }
+                };
+
+                if (commentLengthApplies) {
+                    if (lineLength > maxCommentLength) {
+                        context.report({
+                            node,
+                            loc,
+                            messageId: "maxComment",
+                            data: {
+                                lineLength,
+                                maxCommentLength
+                            }
+                        });
+                    }
+                } else if (lineLength > maxLength) {
+                    context.report({
+                        node,
+                        loc,
+                        messageId: "max",
+                        data: {
+                            lineLength,
+                            maxLength
+                        }
+                    });
+                }
+            });
+        }
+
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: checkProgramForMaxLength
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/max-lines-per-function.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/max-lines-per-function.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/max-lines-per-function.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,213 @@
+/**
+ * @fileoverview A rule to set the maximum number of line of code in a function.
+ * @author Pete Ward <peteward44@gmail.com>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const { upperCaseFirst } = require("../shared/string-utils");
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const OPTIONS_SCHEMA = {
+    type: "object",
+    properties: {
+        max: {
+            type: "integer",
+            minimum: 0
+        },
+        skipComments: {
+            type: "boolean"
+        },
+        skipBlankLines: {
+            type: "boolean"
+        },
+        IIFEs: {
+            type: "boolean"
+        }
+    },
+    additionalProperties: false
+};
+
+const OPTIONS_OR_INTEGER_SCHEMA = {
+    oneOf: [
+        OPTIONS_SCHEMA,
+        {
+            type: "integer",
+            minimum: 1
+        }
+    ]
+};
+
+/**
+ * Given a list of comment nodes, return a map with numeric keys (source code line numbers) and comment token values.
+ * @param {Array} comments An array of comment nodes.
+ * @returns {Map<string, Node>} A map with numeric keys (source code line numbers) and comment token values.
+ */
+function getCommentLineNumbers(comments) {
+    const map = new Map();
+
+    comments.forEach(comment => {
+        for (let i = comment.loc.start.line; i <= comment.loc.end.line; i++) {
+            map.set(i, comment);
+        }
+    });
+    return map;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce a maximum number of lines of code in a function",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/max-lines-per-function"
+        },
+
+        schema: [
+            OPTIONS_OR_INTEGER_SCHEMA
+        ],
+        messages: {
+            exceed: "{{name}} has too many lines ({{lineCount}}). Maximum allowed is {{maxLines}}."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const lines = sourceCode.lines;
+
+        const option = context.options[0];
+        let maxLines = 50;
+        let skipComments = false;
+        let skipBlankLines = false;
+        let IIFEs = false;
+
+        if (typeof option === "object") {
+            maxLines = typeof option.max === "number" ? option.max : 50;
+            skipComments = !!option.skipComments;
+            skipBlankLines = !!option.skipBlankLines;
+            IIFEs = !!option.IIFEs;
+        } else if (typeof option === "number") {
+            maxLines = option;
+        }
+
+        const commentLineNumbers = getCommentLineNumbers(sourceCode.getAllComments());
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Tells if a comment encompasses the entire line.
+         * @param {string} line The source line with a trailing comment
+         * @param {number} lineNumber The one-indexed line number this is on
+         * @param {ASTNode} comment The comment to remove
+         * @returns {boolean} If the comment covers the entire line
+         */
+        function isFullLineComment(line, lineNumber, comment) {
+            const start = comment.loc.start,
+                end = comment.loc.end,
+                isFirstTokenOnLine = start.line === lineNumber && !line.slice(0, start.column).trim(),
+                isLastTokenOnLine = end.line === lineNumber && !line.slice(end.column).trim();
+
+            return comment &&
+                (start.line < lineNumber || isFirstTokenOnLine) &&
+                (end.line > lineNumber || isLastTokenOnLine);
+        }
+
+        /**
+         * Identifies is a node is a FunctionExpression which is part of an IIFE
+         * @param {ASTNode} node Node to test
+         * @returns {boolean} True if it's an IIFE
+         */
+        function isIIFE(node) {
+            return (node.type === "FunctionExpression" || node.type === "ArrowFunctionExpression") && node.parent && node.parent.type === "CallExpression" && node.parent.callee === node;
+        }
+
+        /**
+         * Identifies is a node is a FunctionExpression which is embedded within a MethodDefinition or Property
+         * @param {ASTNode} node Node to test
+         * @returns {boolean} True if it's a FunctionExpression embedded within a MethodDefinition or Property
+         */
+        function isEmbedded(node) {
+            if (!node.parent) {
+                return false;
+            }
+            if (node !== node.parent.value) {
+                return false;
+            }
+            if (node.parent.type === "MethodDefinition") {
+                return true;
+            }
+            if (node.parent.type === "Property") {
+                return node.parent.method === true || node.parent.kind === "get" || node.parent.kind === "set";
+            }
+            return false;
+        }
+
+        /**
+         * Count the lines in the function
+         * @param {ASTNode} funcNode Function AST node
+         * @returns {void}
+         * @private
+         */
+        function processFunction(funcNode) {
+            const node = isEmbedded(funcNode) ? funcNode.parent : funcNode;
+
+            if (!IIFEs && isIIFE(node)) {
+                return;
+            }
+            let lineCount = 0;
+
+            for (let i = node.loc.start.line - 1; i < node.loc.end.line; ++i) {
+                const line = lines[i];
+
+                if (skipComments) {
+                    if (commentLineNumbers.has(i + 1) && isFullLineComment(line, i + 1, commentLineNumbers.get(i + 1))) {
+                        continue;
+                    }
+                }
+
+                if (skipBlankLines) {
+                    if (line.match(/^\s*$/u)) {
+                        continue;
+                    }
+                }
+
+                lineCount++;
+            }
+
+            if (lineCount > maxLines) {
+                const name = upperCaseFirst(astUtils.getFunctionNameWithKind(funcNode));
+
+                context.report({
+                    node,
+                    messageId: "exceed",
+                    data: { name, lineCount, maxLines }
+                });
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            FunctionDeclaration: processFunction,
+            FunctionExpression: processFunction,
+            ArrowFunctionExpression: processFunction
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/max-lines.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/max-lines.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/max-lines.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,193 @@
+/**
+ * @fileoverview enforce a maximum file length
+ * @author Alberto Rodríguez
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Creates an array of numbers from `start` up to, but not including, `end`
+ * @param {number} start The start of the range
+ * @param {number} end The end of the range
+ * @returns {number[]} The range of numbers
+ */
+function range(start, end) {
+    return [...Array(end - start).keys()].map(x => x + start);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce a maximum number of lines per file",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/max-lines"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            skipComments: {
+                                type: "boolean"
+                            },
+                            skipBlankLines: {
+                                type: "boolean"
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+        messages: {
+            exceed:
+                "File has too many lines ({{actual}}). Maximum allowed is {{max}}."
+        }
+    },
+
+    create(context) {
+        const option = context.options[0];
+        let max = 300;
+
+        if (
+            typeof option === "object" &&
+            Object.prototype.hasOwnProperty.call(option, "max")
+        ) {
+            max = option.max;
+        } else if (typeof option === "number") {
+            max = option;
+        }
+
+        const skipComments = option && option.skipComments;
+        const skipBlankLines = option && option.skipBlankLines;
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Returns whether or not a token is a comment node type
+         * @param {Token} token The token to check
+         * @returns {boolean} True if the token is a comment node
+         */
+        function isCommentNodeType(token) {
+            return token && (token.type === "Block" || token.type === "Line");
+        }
+
+        /**
+         * Returns the line numbers of a comment that don't have any code on the same line
+         * @param {Node} comment The comment node to check
+         * @returns {number[]} The line numbers
+         */
+        function getLinesWithoutCode(comment) {
+            let start = comment.loc.start.line;
+            let end = comment.loc.end.line;
+
+            let token;
+
+            token = comment;
+            do {
+                token = sourceCode.getTokenBefore(token, {
+                    includeComments: true
+                });
+            } while (isCommentNodeType(token));
+
+            if (token && astUtils.isTokenOnSameLine(token, comment)) {
+                start += 1;
+            }
+
+            token = comment;
+            do {
+                token = sourceCode.getTokenAfter(token, {
+                    includeComments: true
+                });
+            } while (isCommentNodeType(token));
+
+            if (token && astUtils.isTokenOnSameLine(comment, token)) {
+                end -= 1;
+            }
+
+            if (start <= end) {
+                return range(start, end + 1);
+            }
+            return [];
+        }
+
+        return {
+            "Program:exit"() {
+                let lines = sourceCode.lines.map((text, i) => ({
+                    lineNumber: i + 1,
+                    text
+                }));
+
+                /*
+                 * If file ends with a linebreak, `sourceCode.lines` will have one extra empty line at the end.
+                 * That isn't a real line, so we shouldn't count it.
+                 */
+                if (lines.length > 1 && lines[lines.length - 1].text === "") {
+                    lines.pop();
+                }
+
+                if (skipBlankLines) {
+                    lines = lines.filter(l => l.text.trim() !== "");
+                }
+
+                if (skipComments) {
+                    const comments = sourceCode.getAllComments();
+
+                    const commentLines = new Set(comments.flatMap(getLinesWithoutCode));
+
+                    lines = lines.filter(
+                        l => !commentLines.has(l.lineNumber)
+                    );
+                }
+
+                if (lines.length > max) {
+                    const loc = {
+                        start: {
+                            line: lines[max].lineNumber,
+                            column: 0
+                        },
+                        end: {
+                            line: sourceCode.lines.length,
+                            column: sourceCode.lines[sourceCode.lines.length - 1].length
+                        }
+                    };
+
+                    context.report({
+                        loc,
+                        messageId: "exceed",
+                        data: {
+                            max,
+                            actual: lines.length
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/max-nested-callbacks.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/max-nested-callbacks.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/max-nested-callbacks.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,117 @@
+/**
+ * @fileoverview Rule to enforce a maximum number of nested callbacks.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce a maximum depth that callbacks can be nested",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/max-nested-callbacks"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            maximum: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+        messages: {
+            exceed: "Too many nested callbacks ({{num}}). Maximum allowed is {{max}}."
+        }
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Constants
+        //--------------------------------------------------------------------------
+        const option = context.options[0];
+        let THRESHOLD = 10;
+
+        if (
+            typeof option === "object" &&
+            (Object.prototype.hasOwnProperty.call(option, "maximum") || Object.prototype.hasOwnProperty.call(option, "max"))
+        ) {
+            THRESHOLD = option.maximum || option.max;
+        } else if (typeof option === "number") {
+            THRESHOLD = option;
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const callbackStack = [];
+
+        /**
+         * Checks a given function node for too many callbacks.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkFunction(node) {
+            const parent = node.parent;
+
+            if (parent.type === "CallExpression") {
+                callbackStack.push(node);
+            }
+
+            if (callbackStack.length > THRESHOLD) {
+                const opts = { num: callbackStack.length, max: THRESHOLD };
+
+                context.report({ node, messageId: "exceed", data: opts });
+            }
+        }
+
+        /**
+         * Pops the call stack.
+         * @returns {void}
+         * @private
+         */
+        function popStack() {
+            callbackStack.pop();
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            ArrowFunctionExpression: checkFunction,
+            "ArrowFunctionExpression:exit": popStack,
+
+            FunctionExpression: checkFunction,
+            "FunctionExpression:exit": popStack
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/max-params.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/max-params.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/max-params.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,102 @@
+/**
+ * @fileoverview Rule to flag when a function has too many parameters
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const { upperCaseFirst } = require("../shared/string-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce a maximum number of parameters in function definitions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/max-params"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            maximum: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+        messages: {
+            exceed: "{{name}} has too many parameters ({{count}}). Maximum allowed is {{max}}."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const option = context.options[0];
+        let numParams = 3;
+
+        if (
+            typeof option === "object" &&
+            (Object.prototype.hasOwnProperty.call(option, "maximum") || Object.prototype.hasOwnProperty.call(option, "max"))
+        ) {
+            numParams = option.maximum || option.max;
+        }
+        if (typeof option === "number") {
+            numParams = option;
+        }
+
+        /**
+         * Checks a function to see if it has too many parameters.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkFunction(node) {
+            if (node.params.length > numParams) {
+                context.report({
+                    loc: astUtils.getFunctionHeadLoc(node, sourceCode),
+                    node,
+                    messageId: "exceed",
+                    data: {
+                        name: upperCaseFirst(astUtils.getFunctionNameWithKind(node)),
+                        count: node.params.length,
+                        max: numParams
+                    }
+                });
+            }
+        }
+
+        return {
+            FunctionDeclaration: checkFunction,
+            ArrowFunctionExpression: checkFunction,
+            FunctionExpression: checkFunction
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/max-statements-per-line.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/max-statements-per-line.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/max-statements-per-line.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,199 @@
+/**
+ * @fileoverview Specify the maximum number of statements allowed per line.
+ * @author Kenneth Williams
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce a maximum number of statements allowed per line",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/max-statements-per-line"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    max: {
+                        type: "integer",
+                        minimum: 1,
+                        default: 1
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            exceed: "This line has {{numberOfStatementsOnThisLine}} {{statements}}. Maximum allowed is {{maxStatementsPerLine}}."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode,
+            options = context.options[0] || {},
+            maxStatementsPerLine = typeof options.max !== "undefined" ? options.max : 1;
+
+        let lastStatementLine = 0,
+            numberOfStatementsOnThisLine = 0,
+            firstExtraStatement;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const SINGLE_CHILD_ALLOWED = /^(?:(?:DoWhile|For|ForIn|ForOf|If|Labeled|While)Statement|Export(?:Default|Named)Declaration)$/u;
+
+        /**
+         * Reports with the first extra statement, and clears it.
+         * @returns {void}
+         */
+        function reportFirstExtraStatementAndClear() {
+            if (firstExtraStatement) {
+                context.report({
+                    node: firstExtraStatement,
+                    messageId: "exceed",
+                    data: {
+                        numberOfStatementsOnThisLine,
+                        maxStatementsPerLine,
+                        statements: numberOfStatementsOnThisLine === 1 ? "statement" : "statements"
+                    }
+                });
+            }
+            firstExtraStatement = null;
+        }
+
+        /**
+         * Gets the actual last token of a given node.
+         * @param {ASTNode} node A node to get. This is a node except EmptyStatement.
+         * @returns {Token} The actual last token.
+         */
+        function getActualLastToken(node) {
+            return sourceCode.getLastToken(node, astUtils.isNotSemicolonToken);
+        }
+
+        /**
+         * Addresses a given node.
+         * It updates the state of this rule, then reports the node if the node violated this rule.
+         * @param {ASTNode} node A node to check.
+         * @returns {void}
+         */
+        function enterStatement(node) {
+            const line = node.loc.start.line;
+
+            /*
+             * Skip to allow non-block statements if this is direct child of control statements.
+             * `if (a) foo();` is counted as 1.
+             * But `if (a) foo(); else foo();` should be counted as 2.
+             */
+            if (SINGLE_CHILD_ALLOWED.test(node.parent.type) &&
+                node.parent.alternate !== node
+            ) {
+                return;
+            }
+
+            // Update state.
+            if (line === lastStatementLine) {
+                numberOfStatementsOnThisLine += 1;
+            } else {
+                reportFirstExtraStatementAndClear();
+                numberOfStatementsOnThisLine = 1;
+                lastStatementLine = line;
+            }
+
+            // Reports if the node violated this rule.
+            if (numberOfStatementsOnThisLine === maxStatementsPerLine + 1) {
+                firstExtraStatement = firstExtraStatement || node;
+            }
+        }
+
+        /**
+         * Updates the state of this rule with the end line of leaving node to check with the next statement.
+         * @param {ASTNode} node A node to check.
+         * @returns {void}
+         */
+        function leaveStatement(node) {
+            const line = getActualLastToken(node).loc.end.line;
+
+            // Update state.
+            if (line !== lastStatementLine) {
+                reportFirstExtraStatementAndClear();
+                numberOfStatementsOnThisLine = 1;
+                lastStatementLine = line;
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            BreakStatement: enterStatement,
+            ClassDeclaration: enterStatement,
+            ContinueStatement: enterStatement,
+            DebuggerStatement: enterStatement,
+            DoWhileStatement: enterStatement,
+            ExpressionStatement: enterStatement,
+            ForInStatement: enterStatement,
+            ForOfStatement: enterStatement,
+            ForStatement: enterStatement,
+            FunctionDeclaration: enterStatement,
+            IfStatement: enterStatement,
+            ImportDeclaration: enterStatement,
+            LabeledStatement: enterStatement,
+            ReturnStatement: enterStatement,
+            SwitchStatement: enterStatement,
+            ThrowStatement: enterStatement,
+            TryStatement: enterStatement,
+            VariableDeclaration: enterStatement,
+            WhileStatement: enterStatement,
+            WithStatement: enterStatement,
+            ExportNamedDeclaration: enterStatement,
+            ExportDefaultDeclaration: enterStatement,
+            ExportAllDeclaration: enterStatement,
+
+            "BreakStatement:exit": leaveStatement,
+            "ClassDeclaration:exit": leaveStatement,
+            "ContinueStatement:exit": leaveStatement,
+            "DebuggerStatement:exit": leaveStatement,
+            "DoWhileStatement:exit": leaveStatement,
+            "ExpressionStatement:exit": leaveStatement,
+            "ForInStatement:exit": leaveStatement,
+            "ForOfStatement:exit": leaveStatement,
+            "ForStatement:exit": leaveStatement,
+            "FunctionDeclaration:exit": leaveStatement,
+            "IfStatement:exit": leaveStatement,
+            "ImportDeclaration:exit": leaveStatement,
+            "LabeledStatement:exit": leaveStatement,
+            "ReturnStatement:exit": leaveStatement,
+            "SwitchStatement:exit": leaveStatement,
+            "ThrowStatement:exit": leaveStatement,
+            "TryStatement:exit": leaveStatement,
+            "VariableDeclaration:exit": leaveStatement,
+            "WhileStatement:exit": leaveStatement,
+            "WithStatement:exit": leaveStatement,
+            "ExportNamedDeclaration:exit": leaveStatement,
+            "ExportDefaultDeclaration:exit": leaveStatement,
+            "ExportAllDeclaration:exit": leaveStatement,
+            "Program:exit": reportFirstExtraStatementAndClear
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/max-statements.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/max-statements.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/max-statements.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,184 @@
+/**
+ * @fileoverview A rule to set the maximum number of statements in a function.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const { upperCaseFirst } = require("../shared/string-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce a maximum number of statements allowed in function blocks",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/max-statements"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            maximum: {
+                                type: "integer",
+                                minimum: 0
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 0
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            },
+            {
+                type: "object",
+                properties: {
+                    ignoreTopLevelFunctions: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            exceed: "{{name}} has too many statements ({{count}}). Maximum allowed is {{max}}."
+        }
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const functionStack = [],
+            option = context.options[0],
+            ignoreTopLevelFunctions = context.options[1] && context.options[1].ignoreTopLevelFunctions || false,
+            topLevelFunctions = [];
+        let maxStatements = 10;
+
+        if (
+            typeof option === "object" &&
+            (Object.prototype.hasOwnProperty.call(option, "maximum") || Object.prototype.hasOwnProperty.call(option, "max"))
+        ) {
+            maxStatements = option.maximum || option.max;
+        } else if (typeof option === "number") {
+            maxStatements = option;
+        }
+
+        /**
+         * Reports a node if it has too many statements
+         * @param {ASTNode} node node to evaluate
+         * @param {int} count Number of statements in node
+         * @param {int} max Maximum number of statements allowed
+         * @returns {void}
+         * @private
+         */
+        function reportIfTooManyStatements(node, count, max) {
+            if (count > max) {
+                const name = upperCaseFirst(astUtils.getFunctionNameWithKind(node));
+
+                context.report({
+                    node,
+                    messageId: "exceed",
+                    data: { name, count, max }
+                });
+            }
+        }
+
+        /**
+         * When parsing a new function, store it in our function stack
+         * @returns {void}
+         * @private
+         */
+        function startFunction() {
+            functionStack.push(0);
+        }
+
+        /**
+         * Evaluate the node at the end of function
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function endFunction(node) {
+            const count = functionStack.pop();
+
+            /*
+             * This rule does not apply to class static blocks, but we have to track them so
+             * that statements in them do not count as statements in the enclosing function.
+             */
+            if (node.type === "StaticBlock") {
+                return;
+            }
+
+            if (ignoreTopLevelFunctions && functionStack.length === 0) {
+                topLevelFunctions.push({ node, count });
+            } else {
+                reportIfTooManyStatements(node, count, maxStatements);
+            }
+        }
+
+        /**
+         * Increment the count of the functions
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function countStatements(node) {
+            functionStack[functionStack.length - 1] += node.body.length;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            FunctionDeclaration: startFunction,
+            FunctionExpression: startFunction,
+            ArrowFunctionExpression: startFunction,
+            StaticBlock: startFunction,
+
+            BlockStatement: countStatements,
+
+            "FunctionDeclaration:exit": endFunction,
+            "FunctionExpression:exit": endFunction,
+            "ArrowFunctionExpression:exit": endFunction,
+            "StaticBlock:exit": endFunction,
+
+            "Program:exit"() {
+                if (topLevelFunctions.length === 1) {
+                    return;
+                }
+
+                topLevelFunctions.forEach(element => {
+                    const count = element.count;
+                    const node = element.node;
+
+                    reportIfTooManyStatements(node, count, maxStatements);
+                });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/multiline-comment-style.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/multiline-comment-style.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/multiline-comment-style.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,474 @@
+/**
+ * @fileoverview enforce a particular style for multiline comments
+ * @author Teddy Katz
+ */
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce a particular style for multiline comments",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/multiline-comment-style"
+        },
+
+        fixable: "whitespace",
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["starred-block", "bare-block"]
+                        }
+                    ],
+                    additionalItems: false
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["separate-lines"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                checkJSDoc: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    additionalItems: false
+                }
+            ]
+        },
+        messages: {
+            expectedBlock: "Expected a block comment instead of consecutive line comments.",
+            expectedBareBlock: "Expected a block comment without padding stars.",
+            startNewline: "Expected a linebreak after '/*'.",
+            endNewline: "Expected a linebreak before '*/'.",
+            missingStar: "Expected a '*' at the start of this line.",
+            alignment: "Expected this line to be aligned with the start of the comment.",
+            expectedLines: "Expected multiple line comments instead of a block comment."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const option = context.options[0] || "starred-block";
+        const params = context.options[1] || {};
+        const checkJSDoc = !!params.checkJSDoc;
+
+        //----------------------------------------------------------------------
+        // Helpers
+        //----------------------------------------------------------------------
+
+        /**
+         * Checks if a comment line is starred.
+         * @param {string} line A string representing a comment line.
+         * @returns {boolean} Whether or not the comment line is starred.
+         */
+        function isStarredCommentLine(line) {
+            return /^\s*\*/u.test(line);
+        }
+
+        /**
+         * Checks if a comment group is in starred-block form.
+         * @param {Token[]} commentGroup A group of comments, containing either multiple line comments or a single block comment.
+         * @returns {boolean} Whether or not the comment group is in starred block form.
+         */
+        function isStarredBlockComment([firstComment]) {
+            if (firstComment.type !== "Block") {
+                return false;
+            }
+
+            const lines = firstComment.value.split(astUtils.LINEBREAK_MATCHER);
+
+            // The first and last lines can only contain whitespace.
+            return lines.length > 0 && lines.every((line, i) => (i === 0 || i === lines.length - 1 ? /^\s*$/u : /^\s*\*/u).test(line));
+        }
+
+        /**
+         * Checks if a comment group is in JSDoc form.
+         * @param {Token[]} commentGroup A group of comments, containing either multiple line comments or a single block comment.
+         * @returns {boolean} Whether or not the comment group is in JSDoc form.
+         */
+        function isJSDocComment([firstComment]) {
+            if (firstComment.type !== "Block") {
+                return false;
+            }
+
+            const lines = firstComment.value.split(astUtils.LINEBREAK_MATCHER);
+
+            return /^\*\s*$/u.test(lines[0]) &&
+                lines.slice(1, -1).every(line => /^\s* /u.test(line)) &&
+                /^\s*$/u.test(lines[lines.length - 1]);
+        }
+
+        /**
+         * Processes a comment group that is currently in separate-line form, calculating the offset for each line.
+         * @param {Token[]} commentGroup A group of comments containing multiple line comments.
+         * @returns {string[]} An array of the processed lines.
+         */
+        function processSeparateLineComments(commentGroup) {
+            const allLinesHaveLeadingSpace = commentGroup
+                .map(({ value }) => value)
+                .filter(line => line.trim().length)
+                .every(line => line.startsWith(" "));
+
+            return commentGroup.map(({ value }) => (allLinesHaveLeadingSpace ? value.replace(/^ /u, "") : value));
+        }
+
+        /**
+         * Processes a comment group that is currently in starred-block form, calculating the offset for each line.
+         * @param {Token} comment A single block comment token in starred-block form.
+         * @returns {string[]} An array of the processed lines.
+         */
+        function processStarredBlockComment(comment) {
+            const lines = comment.value.split(astUtils.LINEBREAK_MATCHER)
+                .filter((line, i, linesArr) => !(i === 0 || i === linesArr.length - 1))
+                .map(line => line.replace(/^\s*$/u, ""));
+            const allLinesHaveLeadingSpace = lines
+                .map(line => line.replace(/\s*\*/u, ""))
+                .filter(line => line.trim().length)
+                .every(line => line.startsWith(" "));
+
+            return lines.map(line => line.replace(allLinesHaveLeadingSpace ? /\s*\* ?/u : /\s*\*/u, ""));
+        }
+
+        /**
+         * Processes a comment group that is currently in bare-block form, calculating the offset for each line.
+         * @param {Token} comment A single block comment token in bare-block form.
+         * @returns {string[]} An array of the processed lines.
+         */
+        function processBareBlockComment(comment) {
+            const lines = comment.value.split(astUtils.LINEBREAK_MATCHER).map(line => line.replace(/^\s*$/u, ""));
+            const leadingWhitespace = `${sourceCode.text.slice(comment.range[0] - comment.loc.start.column, comment.range[0])}   `;
+            let offset = "";
+
+            /*
+             * Calculate the offset of the least indented line and use that as the basis for offsetting all the lines.
+             * The first line should not be checked because it is inline with the opening block comment delimiter.
+             */
+            for (const [i, line] of lines.entries()) {
+                if (!line.trim().length || i === 0) {
+                    continue;
+                }
+
+                const [, lineOffset] = line.match(/^(\s*\*?\s*)/u);
+
+                if (lineOffset.length < leadingWhitespace.length) {
+                    const newOffset = leadingWhitespace.slice(lineOffset.length - leadingWhitespace.length);
+
+                    if (newOffset.length > offset.length) {
+                        offset = newOffset;
+                    }
+                }
+            }
+
+            return lines.map(line => {
+                const match = line.match(/^(\s*\*?\s*)(.*)/u);
+                const [, lineOffset, lineContents] = match;
+
+                if (lineOffset.length > leadingWhitespace.length) {
+                    return `${lineOffset.slice(leadingWhitespace.length - (offset.length + lineOffset.length))}${lineContents}`;
+                }
+
+                if (lineOffset.length < leadingWhitespace.length) {
+                    return `${lineOffset.slice(leadingWhitespace.length)}${lineContents}`;
+                }
+
+                return lineContents;
+            });
+        }
+
+        /**
+         * Gets a list of comment lines in a group, formatting leading whitespace as necessary.
+         * @param {Token[]} commentGroup A group of comments containing either multiple line comments or a single block comment.
+         * @returns {string[]} A list of comment lines.
+         */
+        function getCommentLines(commentGroup) {
+            const [firstComment] = commentGroup;
+
+            if (firstComment.type === "Line") {
+                return processSeparateLineComments(commentGroup);
+            }
+
+            if (isStarredBlockComment(commentGroup)) {
+                return processStarredBlockComment(firstComment);
+            }
+
+            return processBareBlockComment(firstComment);
+        }
+
+        /**
+         * Gets the initial offset (whitespace) from the beginning of a line to a given comment token.
+         * @param {Token} comment The token to check.
+         * @returns {string} The offset from the beginning of a line to the token.
+         */
+        function getInitialOffset(comment) {
+            return sourceCode.text.slice(comment.range[0] - comment.loc.start.column, comment.range[0]);
+        }
+
+        /**
+         * Converts a comment into starred-block form
+         * @param {Token} firstComment The first comment of the group being converted
+         * @param {string[]} commentLinesList A list of lines to appear in the new starred-block comment
+         * @returns {string} A representation of the comment value in starred-block form, excluding start and end markers
+         */
+        function convertToStarredBlock(firstComment, commentLinesList) {
+            const initialOffset = getInitialOffset(firstComment);
+
+            return `/*\n${commentLinesList.map(line => `${initialOffset} * ${line}`).join("\n")}\n${initialOffset} */`;
+        }
+
+        /**
+         * Converts a comment into separate-line form
+         * @param {Token} firstComment The first comment of the group being converted
+         * @param {string[]} commentLinesList A list of lines to appear in the new starred-block comment
+         * @returns {string} A representation of the comment value in separate-line form
+         */
+        function convertToSeparateLines(firstComment, commentLinesList) {
+            return commentLinesList.map(line => `// ${line}`).join(`\n${getInitialOffset(firstComment)}`);
+        }
+
+        /**
+         * Converts a comment into bare-block form
+         * @param {Token} firstComment The first comment of the group being converted
+         * @param {string[]} commentLinesList A list of lines to appear in the new starred-block comment
+         * @returns {string} A representation of the comment value in bare-block form
+         */
+        function convertToBlock(firstComment, commentLinesList) {
+            return `/* ${commentLinesList.join(`\n${getInitialOffset(firstComment)}   `)} */`;
+        }
+
+        /**
+         * Each method checks a group of comments to see if it's valid according to the given option.
+         * @param {Token[]} commentGroup A list of comments that appear together. This will either contain a single
+         * block comment or multiple line comments.
+         * @returns {void}
+         */
+        const commentGroupCheckers = {
+            "starred-block"(commentGroup) {
+                const [firstComment] = commentGroup;
+                const commentLines = getCommentLines(commentGroup);
+
+                if (commentLines.some(value => value.includes("*/"))) {
+                    return;
+                }
+
+                if (commentGroup.length > 1) {
+                    context.report({
+                        loc: {
+                            start: firstComment.loc.start,
+                            end: commentGroup[commentGroup.length - 1].loc.end
+                        },
+                        messageId: "expectedBlock",
+                        fix(fixer) {
+                            const range = [firstComment.range[0], commentGroup[commentGroup.length - 1].range[1]];
+
+                            return commentLines.some(value => value.startsWith("/"))
+                                ? null
+                                : fixer.replaceTextRange(range, convertToStarredBlock(firstComment, commentLines));
+                        }
+                    });
+                } else {
+                    const lines = firstComment.value.split(astUtils.LINEBREAK_MATCHER);
+                    const expectedLeadingWhitespace = getInitialOffset(firstComment);
+                    const expectedLinePrefix = `${expectedLeadingWhitespace} *`;
+
+                    if (!/^\*?\s*$/u.test(lines[0])) {
+                        const start = firstComment.value.startsWith("*") ? firstComment.range[0] + 1 : firstComment.range[0];
+
+                        context.report({
+                            loc: {
+                                start: firstComment.loc.start,
+                                end: { line: firstComment.loc.start.line, column: firstComment.loc.start.column + 2 }
+                            },
+                            messageId: "startNewline",
+                            fix: fixer => fixer.insertTextAfterRange([start, start + 2], `\n${expectedLinePrefix}`)
+                        });
+                    }
+
+                    if (!/^\s*$/u.test(lines[lines.length - 1])) {
+                        context.report({
+                            loc: {
+                                start: { line: firstComment.loc.end.line, column: firstComment.loc.end.column - 2 },
+                                end: firstComment.loc.end
+                            },
+                            messageId: "endNewline",
+                            fix: fixer => fixer.replaceTextRange([firstComment.range[1] - 2, firstComment.range[1]], `\n${expectedLinePrefix}/`)
+                        });
+                    }
+
+                    for (let lineNumber = firstComment.loc.start.line + 1; lineNumber <= firstComment.loc.end.line; lineNumber++) {
+                        const lineText = sourceCode.lines[lineNumber - 1];
+                        const errorType = isStarredCommentLine(lineText)
+                            ? "alignment"
+                            : "missingStar";
+
+                        if (!lineText.startsWith(expectedLinePrefix)) {
+                            context.report({
+                                loc: {
+                                    start: { line: lineNumber, column: 0 },
+                                    end: { line: lineNumber, column: lineText.length }
+                                },
+                                messageId: errorType,
+                                fix(fixer) {
+                                    const lineStartIndex = sourceCode.getIndexFromLoc({ line: lineNumber, column: 0 });
+
+                                    if (errorType === "alignment") {
+                                        const [, commentTextPrefix = ""] = lineText.match(/^(\s*\*)/u) || [];
+                                        const commentTextStartIndex = lineStartIndex + commentTextPrefix.length;
+
+                                        return fixer.replaceTextRange([lineStartIndex, commentTextStartIndex], expectedLinePrefix);
+                                    }
+
+                                    const [, commentTextPrefix = ""] = lineText.match(/^(\s*)/u) || [];
+                                    const commentTextStartIndex = lineStartIndex + commentTextPrefix.length;
+                                    let offset;
+
+                                    for (const [idx, line] of lines.entries()) {
+                                        if (!/\S+/u.test(line)) {
+                                            continue;
+                                        }
+
+                                        const lineTextToAlignWith = sourceCode.lines[firstComment.loc.start.line - 1 + idx];
+                                        const [, prefix = "", initialOffset = ""] = lineTextToAlignWith.match(/^(\s*(?:\/?\*)?(\s*))/u) || [];
+
+                                        offset = `${commentTextPrefix.slice(prefix.length)}${initialOffset}`;
+
+                                        if (/^\s*\//u.test(lineText) && offset.length === 0) {
+                                            offset += " ";
+                                        }
+                                        break;
+                                    }
+
+                                    return fixer.replaceTextRange([lineStartIndex, commentTextStartIndex], `${expectedLinePrefix}${offset}`);
+                                }
+                            });
+                        }
+                    }
+                }
+            },
+            "separate-lines"(commentGroup) {
+                const [firstComment] = commentGroup;
+
+                const isJSDoc = isJSDocComment(commentGroup);
+
+                if (firstComment.type !== "Block" || (!checkJSDoc && isJSDoc)) {
+                    return;
+                }
+
+                let commentLines = getCommentLines(commentGroup);
+
+                if (isJSDoc) {
+                    commentLines = commentLines.slice(1, commentLines.length - 1);
+                }
+
+                const tokenAfter = sourceCode.getTokenAfter(firstComment, { includeComments: true });
+
+                if (tokenAfter && firstComment.loc.end.line === tokenAfter.loc.start.line) {
+                    return;
+                }
+
+                context.report({
+                    loc: {
+                        start: firstComment.loc.start,
+                        end: { line: firstComment.loc.start.line, column: firstComment.loc.start.column + 2 }
+                    },
+                    messageId: "expectedLines",
+                    fix(fixer) {
+                        return fixer.replaceText(firstComment, convertToSeparateLines(firstComment, commentLines));
+                    }
+                });
+            },
+            "bare-block"(commentGroup) {
+                if (isJSDocComment(commentGroup)) {
+                    return;
+                }
+
+                const [firstComment] = commentGroup;
+                const commentLines = getCommentLines(commentGroup);
+
+                // Disallows consecutive line comments in favor of using a block comment.
+                if (firstComment.type === "Line" && commentLines.length > 1 &&
+                    !commentLines.some(value => value.includes("*/"))) {
+                    context.report({
+                        loc: {
+                            start: firstComment.loc.start,
+                            end: commentGroup[commentGroup.length - 1].loc.end
+                        },
+                        messageId: "expectedBlock",
+                        fix(fixer) {
+                            return fixer.replaceTextRange(
+                                [firstComment.range[0], commentGroup[commentGroup.length - 1].range[1]],
+                                convertToBlock(firstComment, commentLines)
+                            );
+                        }
+                    });
+                }
+
+                // Prohibits block comments from having a * at the beginning of each line.
+                if (isStarredBlockComment(commentGroup)) {
+                    context.report({
+                        loc: {
+                            start: firstComment.loc.start,
+                            end: { line: firstComment.loc.start.line, column: firstComment.loc.start.column + 2 }
+                        },
+                        messageId: "expectedBareBlock",
+                        fix(fixer) {
+                            return fixer.replaceText(firstComment, convertToBlock(firstComment, commentLines));
+                        }
+                    });
+                }
+            }
+        };
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+            Program() {
+                return sourceCode.getAllComments()
+                    .filter(comment => comment.type !== "Shebang")
+                    .filter(comment => !astUtils.COMMENTS_IGNORE_PATTERN.test(comment.value))
+                    .filter(comment => {
+                        const tokenBefore = sourceCode.getTokenBefore(comment, { includeComments: true });
+
+                        return !tokenBefore || tokenBefore.loc.end.line < comment.loc.start.line;
+                    })
+                    .reduce((commentGroups, comment, index, commentList) => {
+                        const tokenBefore = sourceCode.getTokenBefore(comment, { includeComments: true });
+
+                        if (
+                            comment.type === "Line" &&
+                            index && commentList[index - 1].type === "Line" &&
+                            tokenBefore && tokenBefore.loc.end.line === comment.loc.start.line - 1 &&
+                            tokenBefore === commentList[index - 1]
+                        ) {
+                            commentGroups[commentGroups.length - 1].push(comment);
+                        } else {
+                            commentGroups.push([comment]);
+                        }
+
+                        return commentGroups;
+                    }, [])
+                    .filter(commentGroup => !(commentGroup.length === 1 && commentGroup[0].loc.start.line === commentGroup[0].loc.end.line))
+                    .forEach(commentGroupCheckers[option]);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/multiline-ternary.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/multiline-ternary.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/multiline-ternary.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,174 @@
+/**
+ * @fileoverview Enforce newlines between operands of ternary expressions
+ * @author Kai Cataldo
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce newlines between operands of ternary expressions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/multiline-ternary"
+        },
+
+        schema: [
+            {
+                enum: ["always", "always-multiline", "never"]
+            }
+        ],
+
+        messages: {
+            expectedTestCons: "Expected newline between test and consequent of ternary expression.",
+            expectedConsAlt: "Expected newline between consequent and alternate of ternary expression.",
+            unexpectedTestCons: "Unexpected newline between test and consequent of ternary expression.",
+            unexpectedConsAlt: "Unexpected newline between consequent and alternate of ternary expression."
+        },
+
+        fixable: "whitespace"
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const option = context.options[0];
+        const multiline = option !== "never";
+        const allowSingleLine = option === "always-multiline";
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            ConditionalExpression(node) {
+                const questionToken = sourceCode.getTokenAfter(node.test, astUtils.isNotClosingParenToken);
+                const colonToken = sourceCode.getTokenAfter(node.consequent, astUtils.isNotClosingParenToken);
+
+                const firstTokenOfTest = sourceCode.getFirstToken(node);
+                const lastTokenOfTest = sourceCode.getTokenBefore(questionToken);
+                const firstTokenOfConsequent = sourceCode.getTokenAfter(questionToken);
+                const lastTokenOfConsequent = sourceCode.getTokenBefore(colonToken);
+                const firstTokenOfAlternate = sourceCode.getTokenAfter(colonToken);
+
+                const areTestAndConsequentOnSameLine = astUtils.isTokenOnSameLine(lastTokenOfTest, firstTokenOfConsequent);
+                const areConsequentAndAlternateOnSameLine = astUtils.isTokenOnSameLine(lastTokenOfConsequent, firstTokenOfAlternate);
+
+                const hasComments = !!sourceCode.getCommentsInside(node).length;
+
+                if (!multiline) {
+                    if (!areTestAndConsequentOnSameLine) {
+                        context.report({
+                            node: node.test,
+                            loc: {
+                                start: firstTokenOfTest.loc.start,
+                                end: lastTokenOfTest.loc.end
+                            },
+                            messageId: "unexpectedTestCons",
+                            fix(fixer) {
+                                if (hasComments) {
+                                    return null;
+                                }
+                                const fixers = [];
+                                const areTestAndQuestionOnSameLine = astUtils.isTokenOnSameLine(lastTokenOfTest, questionToken);
+                                const areQuestionAndConsOnSameLine = astUtils.isTokenOnSameLine(questionToken, firstTokenOfConsequent);
+
+                                if (!areTestAndQuestionOnSameLine) {
+                                    fixers.push(fixer.removeRange([lastTokenOfTest.range[1], questionToken.range[0]]));
+                                }
+                                if (!areQuestionAndConsOnSameLine) {
+                                    fixers.push(fixer.removeRange([questionToken.range[1], firstTokenOfConsequent.range[0]]));
+                                }
+
+                                return fixers;
+                            }
+                        });
+                    }
+
+                    if (!areConsequentAndAlternateOnSameLine) {
+                        context.report({
+                            node: node.consequent,
+                            loc: {
+                                start: firstTokenOfConsequent.loc.start,
+                                end: lastTokenOfConsequent.loc.end
+                            },
+                            messageId: "unexpectedConsAlt",
+                            fix(fixer) {
+                                if (hasComments) {
+                                    return null;
+                                }
+                                const fixers = [];
+                                const areConsAndColonOnSameLine = astUtils.isTokenOnSameLine(lastTokenOfConsequent, colonToken);
+                                const areColonAndAltOnSameLine = astUtils.isTokenOnSameLine(colonToken, firstTokenOfAlternate);
+
+                                if (!areConsAndColonOnSameLine) {
+                                    fixers.push(fixer.removeRange([lastTokenOfConsequent.range[1], colonToken.range[0]]));
+                                }
+                                if (!areColonAndAltOnSameLine) {
+                                    fixers.push(fixer.removeRange([colonToken.range[1], firstTokenOfAlternate.range[0]]));
+                                }
+
+                                return fixers;
+                            }
+                        });
+                    }
+                } else {
+                    if (allowSingleLine && node.loc.start.line === node.loc.end.line) {
+                        return;
+                    }
+
+                    if (areTestAndConsequentOnSameLine) {
+                        context.report({
+                            node: node.test,
+                            loc: {
+                                start: firstTokenOfTest.loc.start,
+                                end: lastTokenOfTest.loc.end
+                            },
+                            messageId: "expectedTestCons",
+                            fix: fixer => (hasComments ? null : (
+                                fixer.replaceTextRange(
+                                    [
+                                        lastTokenOfTest.range[1],
+                                        questionToken.range[0]
+                                    ],
+                                    "\n"
+                                )
+                            ))
+                        });
+                    }
+
+                    if (areConsequentAndAlternateOnSameLine) {
+                        context.report({
+                            node: node.consequent,
+                            loc: {
+                                start: firstTokenOfConsequent.loc.start,
+                                end: lastTokenOfConsequent.loc.end
+                            },
+                            messageId: "expectedConsAlt",
+                            fix: (fixer => (hasComments ? null : (
+                                fixer.replaceTextRange(
+                                    [
+                                        lastTokenOfConsequent.range[1],
+                                        colonToken.range[0]
+                                    ],
+                                    "\n"
+                                )
+                            )))
+                        });
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/new-cap.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/new-cap.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/new-cap.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,276 @@
+/**
+ * @fileoverview Rule to flag use of constructors without capital letters
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const CAPS_ALLOWED = [
+    "Array",
+    "Boolean",
+    "Date",
+    "Error",
+    "Function",
+    "Number",
+    "Object",
+    "RegExp",
+    "String",
+    "Symbol",
+    "BigInt"
+];
+
+/**
+ * Ensure that if the key is provided, it must be an array.
+ * @param {Object} obj Object to check with `key`.
+ * @param {string} key Object key to check on `obj`.
+ * @param {any} fallback If obj[key] is not present, this will be returned.
+ * @throws {TypeError} If key is not an own array type property of `obj`.
+ * @returns {string[]} Returns obj[key] if it's an Array, otherwise `fallback`
+ */
+function checkArray(obj, key, fallback) {
+
+    /* c8 ignore start */
+    if (Object.prototype.hasOwnProperty.call(obj, key) && !Array.isArray(obj[key])) {
+        throw new TypeError(`${key}, if provided, must be an Array`);
+    }/* c8 ignore stop */
+    return obj[key] || fallback;
+}
+
+/**
+ * A reducer function to invert an array to an Object mapping the string form of the key, to `true`.
+ * @param {Object} map Accumulator object for the reduce.
+ * @param {string} key Object key to set to `true`.
+ * @returns {Object} Returns the updated Object for further reduction.
+ */
+function invert(map, key) {
+    map[key] = true;
+    return map;
+}
+
+/**
+ * Creates an object with the cap is new exceptions as its keys and true as their values.
+ * @param {Object} config Rule configuration
+ * @returns {Object} Object with cap is new exceptions.
+ */
+function calculateCapIsNewExceptions(config) {
+    let capIsNewExceptions = checkArray(config, "capIsNewExceptions", CAPS_ALLOWED);
+
+    if (capIsNewExceptions !== CAPS_ALLOWED) {
+        capIsNewExceptions = capIsNewExceptions.concat(CAPS_ALLOWED);
+    }
+
+    return capIsNewExceptions.reduce(invert, {});
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require constructor names to begin with a capital letter",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/new-cap"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    newIsCap: {
+                        type: "boolean",
+                        default: true
+                    },
+                    capIsNew: {
+                        type: "boolean",
+                        default: true
+                    },
+                    newIsCapExceptions: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        }
+                    },
+                    newIsCapExceptionPattern: {
+                        type: "string"
+                    },
+                    capIsNewExceptions: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        }
+                    },
+                    capIsNewExceptionPattern: {
+                        type: "string"
+                    },
+                    properties: {
+                        type: "boolean",
+                        default: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            upper: "A function with a name starting with an uppercase letter should only be used as a constructor.",
+            lower: "A constructor name should not start with a lowercase letter."
+        }
+    },
+
+    create(context) {
+
+        const config = Object.assign({}, context.options[0]);
+
+        config.newIsCap = config.newIsCap !== false;
+        config.capIsNew = config.capIsNew !== false;
+        const skipProperties = config.properties === false;
+
+        const newIsCapExceptions = checkArray(config, "newIsCapExceptions", []).reduce(invert, {});
+        const newIsCapExceptionPattern = config.newIsCapExceptionPattern ? new RegExp(config.newIsCapExceptionPattern, "u") : null;
+
+        const capIsNewExceptions = calculateCapIsNewExceptions(config);
+        const capIsNewExceptionPattern = config.capIsNewExceptionPattern ? new RegExp(config.capIsNewExceptionPattern, "u") : null;
+
+        const listeners = {};
+
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Get exact callee name from expression
+         * @param {ASTNode} node CallExpression or NewExpression node
+         * @returns {string} name
+         */
+        function extractNameFromExpression(node) {
+            return node.callee.type === "Identifier"
+                ? node.callee.name
+                : astUtils.getStaticPropertyName(node.callee) || "";
+        }
+
+        /**
+         * Returns the capitalization state of the string -
+         * Whether the first character is uppercase, lowercase, or non-alphabetic
+         * @param {string} str String
+         * @returns {string} capitalization state: "non-alpha", "lower", or "upper"
+         */
+        function getCap(str) {
+            const firstChar = str.charAt(0);
+
+            const firstCharLower = firstChar.toLowerCase();
+            const firstCharUpper = firstChar.toUpperCase();
+
+            if (firstCharLower === firstCharUpper) {
+
+                // char has no uppercase variant, so it's non-alphabetic
+                return "non-alpha";
+            }
+            if (firstChar === firstCharLower) {
+                return "lower";
+            }
+            return "upper";
+
+        }
+
+        /**
+         * Check if capitalization is allowed for a CallExpression
+         * @param {Object} allowedMap Object mapping calleeName to a Boolean
+         * @param {ASTNode} node CallExpression node
+         * @param {string} calleeName Capitalized callee name from a CallExpression
+         * @param {Object} pattern RegExp object from options pattern
+         * @returns {boolean} Returns true if the callee may be capitalized
+         */
+        function isCapAllowed(allowedMap, node, calleeName, pattern) {
+            const sourceText = sourceCode.getText(node.callee);
+
+            if (allowedMap[calleeName] || allowedMap[sourceText]) {
+                return true;
+            }
+
+            if (pattern && pattern.test(sourceText)) {
+                return true;
+            }
+
+            const callee = astUtils.skipChainExpression(node.callee);
+
+            if (calleeName === "UTC" && callee.type === "MemberExpression") {
+
+                // allow if callee is Date.UTC
+                return callee.object.type === "Identifier" &&
+                    callee.object.name === "Date";
+            }
+
+            return skipProperties && callee.type === "MemberExpression";
+        }
+
+        /**
+         * Reports the given messageId for the given node. The location will be the start of the property or the callee.
+         * @param {ASTNode} node CallExpression or NewExpression node.
+         * @param {string} messageId The messageId to report.
+         * @returns {void}
+         */
+        function report(node, messageId) {
+            let callee = astUtils.skipChainExpression(node.callee);
+
+            if (callee.type === "MemberExpression") {
+                callee = callee.property;
+            }
+
+            context.report({ node, loc: callee.loc, messageId });
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        if (config.newIsCap) {
+            listeners.NewExpression = function(node) {
+
+                const constructorName = extractNameFromExpression(node);
+
+                if (constructorName) {
+                    const capitalization = getCap(constructorName);
+                    const isAllowed = capitalization !== "lower" || isCapAllowed(newIsCapExceptions, node, constructorName, newIsCapExceptionPattern);
+
+                    if (!isAllowed) {
+                        report(node, "lower");
+                    }
+                }
+            };
+        }
+
+        if (config.capIsNew) {
+            listeners.CallExpression = function(node) {
+
+                const calleeName = extractNameFromExpression(node);
+
+                if (calleeName) {
+                    const capitalization = getCap(calleeName);
+                    const isAllowed = capitalization !== "upper" || isCapAllowed(capIsNewExceptions, node, calleeName, capIsNewExceptionPattern);
+
+                    if (!isAllowed) {
+                        report(node, "upper");
+                    }
+                }
+            };
+        }
+
+        return listeners;
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/new-parens.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/new-parens.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/new-parens.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,93 @@
+/**
+ * @fileoverview Rule to flag when using constructor without parentheses
+ * @author Ilya Volodin
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce or disallow parentheses when invoking a constructor with no arguments",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/new-parens"
+        },
+
+        fixable: "code",
+        schema: [
+            {
+                enum: ["always", "never"]
+            }
+        ],
+        messages: {
+            missing: "Missing '()' invoking a constructor.",
+            unnecessary: "Unnecessary '()' invoking a constructor with no arguments."
+        }
+    },
+
+    create(context) {
+        const options = context.options;
+        const always = options[0] !== "never"; // Default is always
+
+        const sourceCode = context.sourceCode;
+
+        return {
+            NewExpression(node) {
+                if (node.arguments.length !== 0) {
+                    return; // if there are arguments, there have to be parens
+                }
+
+                const lastToken = sourceCode.getLastToken(node);
+                const hasLastParen = lastToken && astUtils.isClosingParenToken(lastToken);
+
+                // `hasParens` is true only if the new expression ends with its own parens, e.g., new new foo() does not end with its own parens
+                const hasParens = hasLastParen &&
+                    astUtils.isOpeningParenToken(sourceCode.getTokenBefore(lastToken)) &&
+                    node.callee.range[1] < node.range[1];
+
+                if (always) {
+                    if (!hasParens) {
+                        context.report({
+                            node,
+                            messageId: "missing",
+                            fix: fixer => fixer.insertTextAfter(node, "()")
+                        });
+                    }
+                } else {
+                    if (hasParens) {
+                        context.report({
+                            node,
+                            messageId: "unnecessary",
+                            fix: fixer => [
+                                fixer.remove(sourceCode.getTokenBefore(lastToken)),
+                                fixer.remove(lastToken),
+                                fixer.insertTextBefore(node, "("),
+                                fixer.insertTextAfter(node, ")")
+                            ]
+                        });
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/newline-after-var.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/newline-after-var.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/newline-after-var.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,253 @@
+/**
+ * @fileoverview Rule to check empty newline after "var" statement
+ * @author Gopal Venkatesan
+ * @deprecated in ESLint v4.0.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "Require or disallow an empty line after variable declarations",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/newline-after-var"
+        },
+        schema: [
+            {
+                enum: ["never", "always"]
+            }
+        ],
+        fixable: "whitespace",
+        messages: {
+            expected: "Expected blank line after variable declarations.",
+            unexpected: "Unexpected blank line after variable declarations."
+        },
+
+        deprecated: true,
+
+        replacedBy: ["padding-line-between-statements"]
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        // Default `mode` to "always".
+        const mode = context.options[0] === "never" ? "never" : "always";
+
+        // Cache starting and ending line numbers of comments for faster lookup
+        const commentEndLine = sourceCode.getAllComments().reduce((result, token) => {
+            result[token.loc.start.line] = token.loc.end.line;
+            return result;
+        }, {});
+
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Gets a token from the given node to compare line to the next statement.
+         *
+         * In general, the token is the last token of the node. However, the token is the second last token if the following conditions satisfy.
+         *
+         * - The last token is semicolon.
+         * - The semicolon is on a different line from the previous token of the semicolon.
+         *
+         * This behavior would address semicolon-less style code. e.g.:
+         *
+         *     var foo = 1
+         *
+         *     ;(a || b).doSomething()
+         * @param {ASTNode} node The node to get.
+         * @returns {Token} The token to compare line to the next statement.
+         */
+        function getLastToken(node) {
+            const lastToken = sourceCode.getLastToken(node);
+
+            if (lastToken.type === "Punctuator" && lastToken.value === ";") {
+                const prevToken = sourceCode.getTokenBefore(lastToken);
+
+                if (prevToken.loc.end.line !== lastToken.loc.start.line) {
+                    return prevToken;
+                }
+            }
+
+            return lastToken;
+        }
+
+        /**
+         * Determine if provided keyword is a variable declaration
+         * @private
+         * @param {string} keyword keyword to test
+         * @returns {boolean} True if `keyword` is a type of var
+         */
+        function isVar(keyword) {
+            return keyword === "var" || keyword === "let" || keyword === "const";
+        }
+
+        /**
+         * Determine if provided keyword is a variant of for specifiers
+         * @private
+         * @param {string} keyword keyword to test
+         * @returns {boolean} True if `keyword` is a variant of for specifier
+         */
+        function isForTypeSpecifier(keyword) {
+            return keyword === "ForStatement" || keyword === "ForInStatement" || keyword === "ForOfStatement";
+        }
+
+        /**
+         * Determine if provided keyword is an export specifiers
+         * @private
+         * @param {string} nodeType nodeType to test
+         * @returns {boolean} True if `nodeType` is an export specifier
+         */
+        function isExportSpecifier(nodeType) {
+            return nodeType === "ExportNamedDeclaration" || nodeType === "ExportSpecifier" ||
+                nodeType === "ExportDefaultDeclaration" || nodeType === "ExportAllDeclaration";
+        }
+
+        /**
+         * Determine if provided node is the last of their parent block.
+         * @private
+         * @param {ASTNode} node node to test
+         * @returns {boolean} True if `node` is last of their parent block.
+         */
+        function isLastNode(node) {
+            const token = sourceCode.getTokenAfter(node);
+
+            return !token || (token.type === "Punctuator" && token.value === "}");
+        }
+
+        /**
+         * Gets the last line of a group of consecutive comments
+         * @param {number} commentStartLine The starting line of the group
+         * @returns {number} The number of the last comment line of the group
+         */
+        function getLastCommentLineOfBlock(commentStartLine) {
+            const currentCommentEnd = commentEndLine[commentStartLine];
+
+            return commentEndLine[currentCommentEnd + 1] ? getLastCommentLineOfBlock(currentCommentEnd + 1) : currentCommentEnd;
+        }
+
+        /**
+         * Determine if a token starts more than one line after a comment ends
+         * @param {token} token The token being checked
+         * @param {integer} commentStartLine The line number on which the comment starts
+         * @returns {boolean} True if `token` does not start immediately after a comment
+         */
+        function hasBlankLineAfterComment(token, commentStartLine) {
+            return token.loc.start.line > getLastCommentLineOfBlock(commentStartLine) + 1;
+        }
+
+        /**
+         * Checks that a blank line exists after a variable declaration when mode is
+         * set to "always", or checks that there is no blank line when mode is set
+         * to "never"
+         * @private
+         * @param {ASTNode} node `VariableDeclaration` node to test
+         * @returns {void}
+         */
+        function checkForBlankLine(node) {
+
+            /*
+             * lastToken is the last token on the node's line. It will usually also be the last token of the node, but it will
+             * sometimes be second-last if there is a semicolon on a different line.
+             */
+            const lastToken = getLastToken(node),
+
+                /*
+                 * If lastToken is the last token of the node, nextToken should be the token after the node. Otherwise, nextToken
+                 * is the last token of the node.
+                 */
+                nextToken = lastToken === sourceCode.getLastToken(node) ? sourceCode.getTokenAfter(node) : sourceCode.getLastToken(node),
+                nextLineNum = lastToken.loc.end.line + 1;
+
+            // Ignore if there is no following statement
+            if (!nextToken) {
+                return;
+            }
+
+            // Ignore if parent of node is a for variant
+            if (isForTypeSpecifier(node.parent.type)) {
+                return;
+            }
+
+            // Ignore if parent of node is an export specifier
+            if (isExportSpecifier(node.parent.type)) {
+                return;
+            }
+
+            /*
+             * Some coding styles use multiple `var` statements, so do nothing if
+             * the next token is a `var` statement.
+             */
+            if (nextToken.type === "Keyword" && isVar(nextToken.value)) {
+                return;
+            }
+
+            // Ignore if it is last statement in a block
+            if (isLastNode(node)) {
+                return;
+            }
+
+            // Next statement is not a `var`...
+            const noNextLineToken = nextToken.loc.start.line > nextLineNum;
+            const hasNextLineComment = (typeof commentEndLine[nextLineNum] !== "undefined");
+
+            if (mode === "never" && noNextLineToken && !hasNextLineComment) {
+                context.report({
+                    node,
+                    messageId: "unexpected",
+                    fix(fixer) {
+                        const linesBetween = sourceCode.getText().slice(lastToken.range[1], nextToken.range[0]).split(astUtils.LINEBREAK_MATCHER);
+
+                        return fixer.replaceTextRange([lastToken.range[1], nextToken.range[0]], `${linesBetween.slice(0, -1).join("")}\n${linesBetween[linesBetween.length - 1]}`);
+                    }
+                });
+            }
+
+            // Token on the next line, or comment without blank line
+            if (
+                mode === "always" && (
+                    !noNextLineToken ||
+                    hasNextLineComment && !hasBlankLineAfterComment(nextToken, nextLineNum)
+                )
+            ) {
+                context.report({
+                    node,
+                    messageId: "expected",
+                    fix(fixer) {
+                        if ((noNextLineToken ? getLastCommentLineOfBlock(nextLineNum) : lastToken.loc.end.line) === nextToken.loc.start.line) {
+                            return fixer.insertTextBefore(nextToken, "\n\n");
+                        }
+
+                        return fixer.insertTextBeforeRange([nextToken.range[0] - nextToken.loc.start.column, nextToken.range[1]], "\n");
+                    }
+                });
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            VariableDeclaration: checkForBlankLine
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/newline-before-return.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/newline-before-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/newline-before-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,217 @@
+/**
+ * @fileoverview Rule to require newlines before `return` statement
+ * @author Kai Cataldo
+ * @deprecated in ESLint v4.0.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "Require an empty line before `return` statements",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/newline-before-return"
+        },
+
+        fixable: "whitespace",
+        schema: [],
+        messages: {
+            expected: "Expected newline before return statement."
+        },
+
+        deprecated: true,
+        replacedBy: ["padding-line-between-statements"]
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Tests whether node is preceded by supplied tokens
+         * @param {ASTNode} node node to check
+         * @param {Array} testTokens array of tokens to test against
+         * @returns {boolean} Whether or not the node is preceded by one of the supplied tokens
+         * @private
+         */
+        function isPrecededByTokens(node, testTokens) {
+            const tokenBefore = sourceCode.getTokenBefore(node);
+
+            return testTokens.includes(tokenBefore.value);
+        }
+
+        /**
+         * Checks whether node is the first node after statement or in block
+         * @param {ASTNode} node node to check
+         * @returns {boolean} Whether or not the node is the first node after statement or in block
+         * @private
+         */
+        function isFirstNode(node) {
+            const parentType = node.parent.type;
+
+            if (node.parent.body) {
+                return Array.isArray(node.parent.body)
+                    ? node.parent.body[0] === node
+                    : node.parent.body === node;
+            }
+
+            if (parentType === "IfStatement") {
+                return isPrecededByTokens(node, ["else", ")"]);
+            }
+            if (parentType === "DoWhileStatement") {
+                return isPrecededByTokens(node, ["do"]);
+            }
+            if (parentType === "SwitchCase") {
+                return isPrecededByTokens(node, [":"]);
+            }
+            return isPrecededByTokens(node, [")"]);
+
+        }
+
+        /**
+         * Returns the number of lines of comments that precede the node
+         * @param {ASTNode} node node to check for overlapping comments
+         * @param {number} lineNumTokenBefore line number of previous token, to check for overlapping comments
+         * @returns {number} Number of lines of comments that precede the node
+         * @private
+         */
+        function calcCommentLines(node, lineNumTokenBefore) {
+            const comments = sourceCode.getCommentsBefore(node);
+            let numLinesComments = 0;
+
+            if (!comments.length) {
+                return numLinesComments;
+            }
+
+            comments.forEach(comment => {
+                numLinesComments++;
+
+                if (comment.type === "Block") {
+                    numLinesComments += comment.loc.end.line - comment.loc.start.line;
+                }
+
+                // avoid counting lines with inline comments twice
+                if (comment.loc.start.line === lineNumTokenBefore) {
+                    numLinesComments--;
+                }
+
+                if (comment.loc.end.line === node.loc.start.line) {
+                    numLinesComments--;
+                }
+            });
+
+            return numLinesComments;
+        }
+
+        /**
+         * Returns the line number of the token before the node that is passed in as an argument
+         * @param {ASTNode} node The node to use as the start of the calculation
+         * @returns {number} Line number of the token before `node`
+         * @private
+         */
+        function getLineNumberOfTokenBefore(node) {
+            const tokenBefore = sourceCode.getTokenBefore(node);
+            let lineNumTokenBefore;
+
+            /**
+             * Global return (at the beginning of a script) is a special case.
+             * If there is no token before `return`, then we expect no line
+             * break before the return. Comments are allowed to occupy lines
+             * before the global return, just no blank lines.
+             * Setting lineNumTokenBefore to zero in that case results in the
+             * desired behavior.
+             */
+            if (tokenBefore) {
+                lineNumTokenBefore = tokenBefore.loc.end.line;
+            } else {
+                lineNumTokenBefore = 0; // global return at beginning of script
+            }
+
+            return lineNumTokenBefore;
+        }
+
+        /**
+         * Checks whether node is preceded by a newline
+         * @param {ASTNode} node node to check
+         * @returns {boolean} Whether or not the node is preceded by a newline
+         * @private
+         */
+        function hasNewlineBefore(node) {
+            const lineNumNode = node.loc.start.line;
+            const lineNumTokenBefore = getLineNumberOfTokenBefore(node);
+            const commentLines = calcCommentLines(node, lineNumTokenBefore);
+
+            return (lineNumNode - lineNumTokenBefore - commentLines) > 1;
+        }
+
+        /**
+         * Checks whether it is safe to apply a fix to a given return statement.
+         *
+         * The fix is not considered safe if the given return statement has leading comments,
+         * as we cannot safely determine if the newline should be added before or after the comments.
+         * For more information, see: https://github.com/eslint/eslint/issues/5958#issuecomment-222767211
+         * @param {ASTNode} node The return statement node to check.
+         * @returns {boolean} `true` if it can fix the node.
+         * @private
+         */
+        function canFix(node) {
+            const leadingComments = sourceCode.getCommentsBefore(node);
+            const lastLeadingComment = leadingComments[leadingComments.length - 1];
+            const tokenBefore = sourceCode.getTokenBefore(node);
+
+            if (leadingComments.length === 0) {
+                return true;
+            }
+
+            /*
+             * if the last leading comment ends in the same line as the previous token and
+             * does not share a line with the `return` node, we can consider it safe to fix.
+             * Example:
+             * function a() {
+             *     var b; //comment
+             *     return;
+             * }
+             */
+            if (lastLeadingComment.loc.end.line === tokenBefore.loc.end.line &&
+                lastLeadingComment.loc.end.line !== node.loc.start.line) {
+                return true;
+            }
+
+            return false;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            ReturnStatement(node) {
+                if (!isFirstNode(node) && !hasNewlineBefore(node)) {
+                    context.report({
+                        node,
+                        messageId: "expected",
+                        fix(fixer) {
+                            if (canFix(node)) {
+                                const tokenBefore = sourceCode.getTokenBefore(node);
+                                const newlines = node.loc.start.line === tokenBefore.loc.end.line ? "\n\n" : "\n";
+
+                                return fixer.insertTextBefore(node, newlines);
+                            }
+                            return null;
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/newline-per-chained-call.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/newline-per-chained-call.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/newline-per-chained-call.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,126 @@
+/**
+ * @fileoverview Rule to ensure newline per method call when chaining calls
+ * @author Rajendra Patil
+ * @author Burak Yigit Kaya
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require a newline after each call in a method chain",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/newline-per-chained-call"
+        },
+
+        fixable: "whitespace",
+
+        schema: [{
+            type: "object",
+            properties: {
+                ignoreChainWithDepth: {
+                    type: "integer",
+                    minimum: 1,
+                    maximum: 10,
+                    default: 2
+                }
+            },
+            additionalProperties: false
+        }],
+        messages: {
+            expected: "Expected line break before `{{callee}}`."
+        }
+    },
+
+    create(context) {
+
+        const options = context.options[0] || {},
+            ignoreChainWithDepth = options.ignoreChainWithDepth || 2;
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Get the prefix of a given MemberExpression node.
+         * If the MemberExpression node is a computed value it returns a
+         * left bracket. If not it returns a period.
+         * @param {ASTNode} node A MemberExpression node to get
+         * @returns {string} The prefix of the node.
+         */
+        function getPrefix(node) {
+            if (node.computed) {
+                if (node.optional) {
+                    return "?.[";
+                }
+                return "[";
+            }
+            if (node.optional) {
+                return "?.";
+            }
+            return ".";
+        }
+
+        /**
+         * Gets the property text of a given MemberExpression node.
+         * If the text is multiline, this returns only the first line.
+         * @param {ASTNode} node A MemberExpression node to get.
+         * @returns {string} The property text of the node.
+         */
+        function getPropertyText(node) {
+            const prefix = getPrefix(node);
+            const lines = sourceCode.getText(node.property).split(astUtils.LINEBREAK_MATCHER);
+            const suffix = node.computed && lines.length === 1 ? "]" : "";
+
+            return prefix + lines[0] + suffix;
+        }
+
+        return {
+            "CallExpression:exit"(node) {
+                const callee = astUtils.skipChainExpression(node.callee);
+
+                if (callee.type !== "MemberExpression") {
+                    return;
+                }
+
+                let parent = astUtils.skipChainExpression(callee.object);
+                let depth = 1;
+
+                while (parent && parent.callee) {
+                    depth += 1;
+                    parent = astUtils.skipChainExpression(astUtils.skipChainExpression(parent.callee).object);
+                }
+
+                if (depth > ignoreChainWithDepth && astUtils.isTokenOnSameLine(callee.object, callee.property)) {
+                    const firstTokenAfterObject = sourceCode.getTokenAfter(callee.object, astUtils.isNotClosingParenToken);
+
+                    context.report({
+                        node: callee.property,
+                        loc: {
+                            start: firstTokenAfterObject.loc.start,
+                            end: callee.loc.end
+                        },
+                        messageId: "expected",
+                        data: {
+                            callee: getPropertyText(callee)
+                        },
+                        fix(fixer) {
+                            return fixer.insertTextBefore(firstTokenAfterObject, "\n");
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-alert.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-alert.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-alert.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,138 @@
+/**
+ * @fileoverview Rule to flag use of alert, confirm, prompt
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const {
+    getStaticPropertyName: getPropertyName,
+    getVariableByName,
+    skipChainExpression
+} = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks if the given name is a prohibited identifier.
+ * @param {string} name The name to check
+ * @returns {boolean} Whether or not the name is prohibited.
+ */
+function isProhibitedIdentifier(name) {
+    return /^(alert|confirm|prompt)$/u.test(name);
+}
+
+/**
+ * Finds the eslint-scope reference in the given scope.
+ * @param {Object} scope The scope to search.
+ * @param {ASTNode} node The identifier node.
+ * @returns {Reference|null} Returns the found reference or null if none were found.
+ */
+function findReference(scope, node) {
+    const references = scope.references.filter(reference => reference.identifier.range[0] === node.range[0] &&
+            reference.identifier.range[1] === node.range[1]);
+
+    if (references.length === 1) {
+        return references[0];
+    }
+    return null;
+}
+
+/**
+ * Checks if the given identifier node is shadowed in the given scope.
+ * @param {Object} scope The current scope.
+ * @param {string} node The identifier node to check
+ * @returns {boolean} Whether or not the name is shadowed.
+ */
+function isShadowed(scope, node) {
+    const reference = findReference(scope, node);
+
+    return reference && reference.resolved && reference.resolved.defs.length > 0;
+}
+
+/**
+ * Checks if the given identifier node is a ThisExpression in the global scope or the global window property.
+ * @param {Object} scope The current scope.
+ * @param {string} node The identifier node to check
+ * @returns {boolean} Whether or not the node is a reference to the global object.
+ */
+function isGlobalThisReferenceOrGlobalWindow(scope, node) {
+    if (scope.type === "global" && node.type === "ThisExpression") {
+        return true;
+    }
+    if (
+        node.type === "Identifier" &&
+        (
+            node.name === "window" ||
+            (node.name === "globalThis" && getVariableByName(scope, "globalThis"))
+        )
+    ) {
+        return !isShadowed(scope, node);
+    }
+
+    return false;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow the use of `alert`, `confirm`, and `prompt`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-alert"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "Unexpected {{name}}."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        return {
+            CallExpression(node) {
+                const callee = skipChainExpression(node.callee),
+                    currentScope = sourceCode.getScope(node);
+
+                // without window.
+                if (callee.type === "Identifier") {
+                    const name = callee.name;
+
+                    if (!isShadowed(currentScope, callee) && isProhibitedIdentifier(callee.name)) {
+                        context.report({
+                            node,
+                            messageId: "unexpected",
+                            data: { name }
+                        });
+                    }
+
+                } else if (callee.type === "MemberExpression" && isGlobalThisReferenceOrGlobalWindow(currentScope, callee.object)) {
+                    const name = getPropertyName(callee);
+
+                    if (isProhibitedIdentifier(name)) {
+                        context.report({
+                            node,
+                            messageId: "unexpected",
+                            data: { name }
+                        });
+                    }
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-array-constructor.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-array-constructor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-array-constructor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,133 @@
+/**
+ * @fileoverview Disallow construction of dense arrays using the Array constructor
+ * @author Matt DuVall <http://www.mattduvall.com/>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const {
+    getVariableByName,
+    isClosingParenToken,
+    isOpeningParenToken,
+    isStartOfExpressionStatement,
+    needsPrecedingSemicolon
+} = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `Array` constructors",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-array-constructor"
+        },
+
+        hasSuggestions: true,
+
+        schema: [],
+
+        messages: {
+            preferLiteral: "The array literal notation [] is preferable.",
+            useLiteral: "Replace with an array literal.",
+            useLiteralAfterSemicolon: "Replace with an array literal, add preceding semicolon."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Gets the text between the calling parentheses of a CallExpression or NewExpression.
+         * @param {ASTNode} node A CallExpression or NewExpression node.
+         * @returns {string} The text between the calling parentheses, or an empty string if there are none.
+         */
+        function getArgumentsText(node) {
+            const lastToken = sourceCode.getLastToken(node);
+
+            if (!isClosingParenToken(lastToken)) {
+                return "";
+            }
+
+            let firstToken = node.callee;
+
+            do {
+                firstToken = sourceCode.getTokenAfter(firstToken);
+                if (!firstToken || firstToken === lastToken) {
+                    return "";
+                }
+            } while (!isOpeningParenToken(firstToken));
+
+            return sourceCode.text.slice(firstToken.range[1], lastToken.range[0]);
+        }
+
+        /**
+         * Disallow construction of dense arrays using the Array constructor
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function check(node) {
+            if (
+                node.callee.type !== "Identifier" ||
+                node.callee.name !== "Array" ||
+                node.arguments.length === 1 &&
+                node.arguments[0].type !== "SpreadElement") {
+                return;
+            }
+
+            const variable = getVariableByName(sourceCode.getScope(node), "Array");
+
+            /*
+             * Check if `Array` is a predefined global variable: predefined globals have no declarations,
+             * meaning that the `identifiers` list of the variable object is empty.
+             */
+            if (variable && variable.identifiers.length === 0) {
+                const argsText = getArgumentsText(node);
+                let fixText;
+                let messageId;
+
+                /*
+                 * Check if the suggested change should include a preceding semicolon or not.
+                 * Due to JavaScript's ASI rules, a missing semicolon may be inserted automatically
+                 * before an expression like `Array()` or `new Array()`, but not when the expression
+                 * is changed into an array literal like `[]`.
+                 */
+                if (isStartOfExpressionStatement(node) && needsPrecedingSemicolon(sourceCode, node)) {
+                    fixText = `;[${argsText}]`;
+                    messageId = "useLiteralAfterSemicolon";
+                } else {
+                    fixText = `[${argsText}]`;
+                    messageId = "useLiteral";
+                }
+
+                context.report({
+                    node,
+                    messageId: "preferLiteral",
+                    suggest: [
+                        {
+                            messageId,
+                            fix: fixer => fixer.replaceText(node, fixText)
+                        }
+                    ]
+                });
+            }
+        }
+
+        return {
+            CallExpression: check,
+            NewExpression: check
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-async-promise-executor.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-async-promise-executor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-async-promise-executor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,39 @@
+/**
+ * @fileoverview disallow using an async function as a Promise executor
+ * @author Teddy Katz
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow using an async function as a Promise executor",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-async-promise-executor"
+        },
+
+        fixable: null,
+        schema: [],
+        messages: {
+            async: "Promise executor functions should not be async."
+        }
+    },
+
+    create(context) {
+        return {
+            "NewExpression[callee.name='Promise'][arguments.0.async=true]"(node) {
+                context.report({
+                    node: context.sourceCode.getFirstToken(node.arguments[0], token => token.value === "async"),
+                    messageId: "async"
+                });
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-await-in-loop.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-await-in-loop.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-await-in-loop.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,106 @@
+/**
+ * @fileoverview Rule to disallow uses of await inside of loops.
+ * @author Nat Mote (nmote)
+ */
+"use strict";
+
+/**
+ * Check whether it should stop traversing ancestors at the given node.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} `true` if it should stop traversing.
+ */
+function isBoundary(node) {
+    const t = node.type;
+
+    return (
+        t === "FunctionDeclaration" ||
+        t === "FunctionExpression" ||
+        t === "ArrowFunctionExpression" ||
+
+        /*
+         * Don't report the await expressions on for-await-of loop since it's
+         * asynchronous iteration intentionally.
+         */
+        (t === "ForOfStatement" && node.await === true)
+    );
+}
+
+/**
+ * Check whether the given node is in loop.
+ * @param {ASTNode} node A node to check.
+ * @param {ASTNode} parent A parent node to check.
+ * @returns {boolean} `true` if the node is in loop.
+ */
+function isLooped(node, parent) {
+    switch (parent.type) {
+        case "ForStatement":
+            return (
+                node === parent.test ||
+                node === parent.update ||
+                node === parent.body
+            );
+
+        case "ForOfStatement":
+        case "ForInStatement":
+            return node === parent.body;
+
+        case "WhileStatement":
+        case "DoWhileStatement":
+            return node === parent.test || node === parent.body;
+
+        default:
+            return false;
+    }
+}
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow `await` inside of loops",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-await-in-loop"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpectedAwait: "Unexpected `await` inside a loop."
+        }
+    },
+    create(context) {
+
+        /**
+         * Validate an await expression.
+         * @param {ASTNode} awaitNode An AwaitExpression or ForOfStatement node to validate.
+         * @returns {void}
+         */
+        function validate(awaitNode) {
+            if (awaitNode.type === "ForOfStatement" && !awaitNode.await) {
+                return;
+            }
+
+            let node = awaitNode;
+            let parent = node.parent;
+
+            while (parent && !isBoundary(parent)) {
+                if (isLooped(node, parent)) {
+                    context.report({
+                        node: awaitNode,
+                        messageId: "unexpectedAwait"
+                    });
+                    return;
+                }
+                node = parent;
+                parent = parent.parent;
+            }
+        }
+
+        return {
+            AwaitExpression: validate,
+            ForOfStatement: validate
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-bitwise.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-bitwise.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-bitwise.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,119 @@
+/**
+ * @fileoverview Rule to flag bitwise identifiers
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+/*
+ *
+ * Set of bitwise operators.
+ *
+ */
+const BITWISE_OPERATORS = [
+    "^", "|", "&", "<<", ">>", ">>>",
+    "^=", "|=", "&=", "<<=", ">>=", ">>>=",
+    "~"
+];
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow bitwise operators",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-bitwise"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allow: {
+                        type: "array",
+                        items: {
+                            enum: BITWISE_OPERATORS
+                        },
+                        uniqueItems: true
+                    },
+                    int32Hint: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpected: "Unexpected use of '{{operator}}'."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const allowed = options.allow || [];
+        const int32Hint = options.int32Hint === true;
+
+        /**
+         * Reports an unexpected use of a bitwise operator.
+         * @param {ASTNode} node Node which contains the bitwise operator.
+         * @returns {void}
+         */
+        function report(node) {
+            context.report({ node, messageId: "unexpected", data: { operator: node.operator } });
+        }
+
+        /**
+         * Checks if the given node has a bitwise operator.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} Whether or not the node has a bitwise operator.
+         */
+        function hasBitwiseOperator(node) {
+            return BITWISE_OPERATORS.includes(node.operator);
+        }
+
+        /**
+         * Checks if exceptions were provided, e.g. `{ allow: ['~', '|'] }`.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} Whether or not the node has a bitwise operator.
+         */
+        function allowedOperator(node) {
+            return allowed.includes(node.operator);
+        }
+
+        /**
+         * Checks if the given bitwise operator is used for integer typecasting, i.e. "|0"
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} whether the node is used in integer typecasting.
+         */
+        function isInt32Hint(node) {
+            return int32Hint && node.operator === "|" && node.right &&
+              node.right.type === "Literal" && node.right.value === 0;
+        }
+
+        /**
+         * Report if the given node contains a bitwise operator.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         */
+        function checkNodeForBitwiseOperator(node) {
+            if (hasBitwiseOperator(node) && !allowedOperator(node) && !isInt32Hint(node)) {
+                report(node);
+            }
+        }
+
+        return {
+            AssignmentExpression: checkNodeForBitwiseOperator,
+            BinaryExpression: checkNodeForBitwiseOperator,
+            UnaryExpression: checkNodeForBitwiseOperator
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-buffer-constructor.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-buffer-constructor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-buffer-constructor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,50 @@
+/**
+ * @fileoverview disallow use of the Buffer() constructor
+ * @author Teddy Katz
+ * @deprecated in ESLint v7.0.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+
+        replacedBy: [],
+
+        type: "problem",
+
+        docs: {
+            description: "Disallow use of the `Buffer()` constructor",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-buffer-constructor"
+        },
+
+        schema: [],
+
+        messages: {
+            deprecated: "{{expr}} is deprecated. Use Buffer.from(), Buffer.alloc(), or Buffer.allocUnsafe() instead."
+        }
+    },
+
+    create(context) {
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+            "CallExpression[callee.name='Buffer'], NewExpression[callee.name='Buffer']"(node) {
+                context.report({
+                    node,
+                    messageId: "deprecated",
+                    data: { expr: node.type === "CallExpression" ? "Buffer()" : "new Buffer()" }
+                });
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-caller.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-caller.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-caller.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,46 @@
+/**
+ * @fileoverview Rule to flag use of arguments.callee and arguments.caller.
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow the use of `arguments.caller` or `arguments.callee`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-caller"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "Avoid arguments.{{prop}}."
+        }
+    },
+
+    create(context) {
+
+        return {
+
+            MemberExpression(node) {
+                const objectName = node.object.name,
+                    propertyName = node.property.name;
+
+                if (objectName === "arguments" && !node.computed && propertyName && propertyName.match(/^calle[er]$/u)) {
+                    context.report({ node, messageId: "unexpected", data: { prop: propertyName } });
+                }
+
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-case-declarations.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-case-declarations.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-case-declarations.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,64 @@
+/**
+ * @fileoverview Rule to flag use of an lexical declarations inside a case clause
+ * @author Erik Arvidsson
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow lexical declarations in case clauses",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-case-declarations"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "Unexpected lexical declaration in case block."
+        }
+    },
+
+    create(context) {
+
+        /**
+         * Checks whether or not a node is a lexical declaration.
+         * @param {ASTNode} node A direct child statement of a switch case.
+         * @returns {boolean} Whether or not the node is a lexical declaration.
+         */
+        function isLexicalDeclaration(node) {
+            switch (node.type) {
+                case "FunctionDeclaration":
+                case "ClassDeclaration":
+                    return true;
+                case "VariableDeclaration":
+                    return node.kind !== "var";
+                default:
+                    return false;
+            }
+        }
+
+        return {
+            SwitchCase(node) {
+                for (let i = 0; i < node.consequent.length; i++) {
+                    const statement = node.consequent[i];
+
+                    if (isLexicalDeclaration(statement)) {
+                        context.report({
+                            node: statement,
+                            messageId: "unexpected"
+                        });
+                    }
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-catch-shadow.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-catch-shadow.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-catch-shadow.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,82 @@
+/**
+ * @fileoverview Rule to flag variable leak in CatchClauses in IE 8 and earlier
+ * @author Ian Christian Myers
+ * @deprecated in ESLint v5.1.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `catch` clause parameters from shadowing variables in the outer scope",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-catch-shadow"
+        },
+
+        replacedBy: ["no-shadow"],
+
+        deprecated: true,
+        schema: [],
+
+        messages: {
+            mutable: "Value of '{{name}}' may be overwritten in IE 8 and earlier."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Check if the parameters are been shadowed
+         * @param {Object} scope current scope
+         * @param {string} name parameter name
+         * @returns {boolean} True is its been shadowed
+         */
+        function paramIsShadowing(scope, name) {
+            return astUtils.getVariableByName(scope, name) !== null;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+
+            "CatchClause[param!=null]"(node) {
+                let scope = sourceCode.getScope(node);
+
+                /*
+                 * When ecmaVersion >= 6, CatchClause creates its own scope
+                 * so start from one upper scope to exclude the current node
+                 */
+                if (scope.block === node) {
+                    scope = scope.upper;
+                }
+
+                if (paramIsShadowing(scope, node.param.name)) {
+                    context.report({ node, messageId: "mutable", data: { name: node.param.name } });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-class-assign.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-class-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-class-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,63 @@
+/**
+ * @fileoverview A rule to disallow modifying variables of class declarations
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow reassigning class members",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-class-assign"
+        },
+
+        schema: [],
+
+        messages: {
+            class: "'{{name}}' is a class."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Finds and reports references that are non initializer and writable.
+         * @param {Variable} variable A variable to check.
+         * @returns {void}
+         */
+        function checkVariable(variable) {
+            astUtils.getModifyingReferences(variable.references).forEach(reference => {
+                context.report({ node: reference.identifier, messageId: "class", data: { name: reference.identifier.name } });
+
+            });
+        }
+
+        /**
+         * Finds and reports references that are non initializer and writable.
+         * @param {ASTNode} node A ClassDeclaration/ClassExpression node to check.
+         * @returns {void}
+         */
+        function checkForClass(node) {
+            sourceCode.getDeclaredVariables(node).forEach(checkVariable);
+        }
+
+        return {
+            ClassDeclaration: checkForClass,
+            ClassExpression: checkForClass
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-compare-neg-zero.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-compare-neg-zero.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-compare-neg-zero.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,60 @@
+/**
+ * @fileoverview The rule should warn against code that tries to compare against -0.
+ * @author Aladdin-ADD <hh_2013@foxmail.com>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow comparing against -0",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-compare-neg-zero"
+        },
+
+        fixable: null,
+        schema: [],
+
+        messages: {
+            unexpected: "Do not use the '{{operator}}' operator to compare against -0."
+        }
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Checks a given node is -0
+         * @param {ASTNode} node A node to check.
+         * @returns {boolean} `true` if the node is -0.
+         */
+        function isNegZero(node) {
+            return node.type === "UnaryExpression" && node.operator === "-" && node.argument.type === "Literal" && node.argument.value === 0;
+        }
+        const OPERATORS_TO_CHECK = new Set([">", ">=", "<", "<=", "==", "===", "!=", "!=="]);
+
+        return {
+            BinaryExpression(node) {
+                if (OPERATORS_TO_CHECK.has(node.operator)) {
+                    if (isNegZero(node.left) || isNegZero(node.right)) {
+                        context.report({
+                            node,
+                            messageId: "unexpected",
+                            data: { operator: node.operator }
+                        });
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-cond-assign.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-cond-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-cond-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,159 @@
+/**
+ * @fileoverview Rule to flag assignment in a conditional statement's test expression
+ * @author Stephen Murray <spmurrayzzz>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const TEST_CONDITION_PARENT_TYPES = new Set(["IfStatement", "WhileStatement", "DoWhileStatement", "ForStatement", "ConditionalExpression"]);
+
+const NODE_DESCRIPTIONS = {
+    DoWhileStatement: "a 'do...while' statement",
+    ForStatement: "a 'for' statement",
+    IfStatement: "an 'if' statement",
+    WhileStatement: "a 'while' statement"
+};
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow assignment operators in conditional expressions",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-cond-assign"
+        },
+
+        schema: [
+            {
+                enum: ["except-parens", "always"]
+            }
+        ],
+
+        messages: {
+            unexpected: "Unexpected assignment within {{type}}.",
+
+            // must match JSHint's error message
+            missing: "Expected a conditional expression and instead saw an assignment."
+        }
+    },
+
+    create(context) {
+
+        const prohibitAssign = (context.options[0] || "except-parens");
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Check whether an AST node is the test expression for a conditional statement.
+         * @param {!Object} node The node to test.
+         * @returns {boolean} `true` if the node is the text expression for a conditional statement; otherwise, `false`.
+         */
+        function isConditionalTestExpression(node) {
+            return node.parent &&
+                TEST_CONDITION_PARENT_TYPES.has(node.parent.type) &&
+                node === node.parent.test;
+        }
+
+        /**
+         * Given an AST node, perform a bottom-up search for the first ancestor that represents a conditional statement.
+         * @param {!Object} node The node to use at the start of the search.
+         * @returns {?Object} The closest ancestor node that represents a conditional statement.
+         */
+        function findConditionalAncestor(node) {
+            let currentAncestor = node;
+
+            do {
+                if (isConditionalTestExpression(currentAncestor)) {
+                    return currentAncestor.parent;
+                }
+            } while ((currentAncestor = currentAncestor.parent) && !astUtils.isFunction(currentAncestor));
+
+            return null;
+        }
+
+        /**
+         * Check whether the code represented by an AST node is enclosed in two sets of parentheses.
+         * @param {!Object} node The node to test.
+         * @returns {boolean} `true` if the code is enclosed in two sets of parentheses; otherwise, `false`.
+         */
+        function isParenthesisedTwice(node) {
+            const previousToken = sourceCode.getTokenBefore(node, 1),
+                nextToken = sourceCode.getTokenAfter(node, 1);
+
+            return astUtils.isParenthesised(sourceCode, node) &&
+                previousToken && astUtils.isOpeningParenToken(previousToken) && previousToken.range[1] <= node.range[0] &&
+                astUtils.isClosingParenToken(nextToken) && nextToken.range[0] >= node.range[1];
+        }
+
+        /**
+         * Check a conditional statement's test expression for top-level assignments that are not enclosed in parentheses.
+         * @param {!Object} node The node for the conditional statement.
+         * @returns {void}
+         */
+        function testForAssign(node) {
+            if (node.test &&
+                (node.test.type === "AssignmentExpression") &&
+                (node.type === "ForStatement"
+                    ? !astUtils.isParenthesised(sourceCode, node.test)
+                    : !isParenthesisedTwice(node.test)
+                )
+            ) {
+
+                context.report({
+                    node: node.test,
+                    messageId: "missing"
+                });
+            }
+        }
+
+        /**
+         * Check whether an assignment expression is descended from a conditional statement's test expression.
+         * @param {!Object} node The node for the assignment expression.
+         * @returns {void}
+         */
+        function testForConditionalAncestor(node) {
+            const ancestor = findConditionalAncestor(node);
+
+            if (ancestor) {
+                context.report({
+                    node,
+                    messageId: "unexpected",
+                    data: {
+                        type: NODE_DESCRIPTIONS[ancestor.type] || ancestor.type
+                    }
+                });
+            }
+        }
+
+        if (prohibitAssign === "always") {
+            return {
+                AssignmentExpression: testForConditionalAncestor
+            };
+        }
+
+        return {
+            DoWhileStatement: testForAssign,
+            ForStatement: testForAssign,
+            IfStatement: testForAssign,
+            WhileStatement: testForAssign,
+            ConditionalExpression: testForAssign
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-confusing-arrow.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-confusing-arrow.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-confusing-arrow.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,92 @@
+/**
+ * @fileoverview A rule to warn against using arrow functions when they could be
+ * confused with comparisons
+ * @author Jxck <https://github.com/Jxck>
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils.js");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a node is a conditional expression.
+ * @param {ASTNode} node node to test
+ * @returns {boolean} `true` if the node is a conditional expression.
+ */
+function isConditional(node) {
+    return node && node.type === "ConditionalExpression";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow arrow functions where they could be confused with comparisons",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-confusing-arrow"
+        },
+
+        fixable: "code",
+
+        schema: [{
+            type: "object",
+            properties: {
+                allowParens: { type: "boolean", default: true },
+                onlyOneSimpleParam: { type: "boolean", default: false }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            confusing: "Arrow function used ambiguously with a conditional expression."
+        }
+    },
+
+    create(context) {
+        const config = context.options[0] || {};
+        const allowParens = config.allowParens || (config.allowParens === void 0);
+        const onlyOneSimpleParam = config.onlyOneSimpleParam;
+        const sourceCode = context.sourceCode;
+
+
+        /**
+         * Reports if an arrow function contains an ambiguous conditional.
+         * @param {ASTNode} node A node to check and report.
+         * @returns {void}
+         */
+        function checkArrowFunc(node) {
+            const body = node.body;
+
+            if (isConditional(body) &&
+                !(allowParens && astUtils.isParenthesised(sourceCode, body)) &&
+                !(onlyOneSimpleParam && !(node.params.length === 1 && node.params[0].type === "Identifier"))) {
+                context.report({
+                    node,
+                    messageId: "confusing",
+                    fix(fixer) {
+
+                        // if `allowParens` is not set to true don't bother wrapping in parens
+                        return allowParens && fixer.replaceText(node.body, `(${sourceCode.getText(node.body)})`);
+                    }
+                });
+            }
+        }
+
+        return {
+            ArrowFunctionExpression: checkArrowFunc
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-console.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-console.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-console.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,207 @@
+/**
+ * @fileoverview Rule to flag use of console object
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow the use of `console`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-console"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allow: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        },
+                        minItems: 1,
+                        uniqueItems: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        hasSuggestions: true,
+
+        messages: {
+            unexpected: "Unexpected console statement.",
+            removeConsole: "Remove the console.{{ propertyName }}()."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const allowed = options.allow || [];
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Checks whether the given reference is 'console' or not.
+         * @param {eslint-scope.Reference} reference The reference to check.
+         * @returns {boolean} `true` if the reference is 'console'.
+         */
+        function isConsole(reference) {
+            const id = reference.identifier;
+
+            return id && id.name === "console";
+        }
+
+        /**
+         * Checks whether the property name of the given MemberExpression node
+         * is allowed by options or not.
+         * @param {ASTNode} node The MemberExpression node to check.
+         * @returns {boolean} `true` if the property name of the node is allowed.
+         */
+        function isAllowed(node) {
+            const propertyName = astUtils.getStaticPropertyName(node);
+
+            return propertyName && allowed.includes(propertyName);
+        }
+
+        /**
+         * Checks whether the given reference is a member access which is not
+         * allowed by options or not.
+         * @param {eslint-scope.Reference} reference The reference to check.
+         * @returns {boolean} `true` if the reference is a member access which
+         *      is not allowed by options.
+         */
+        function isMemberAccessExceptAllowed(reference) {
+            const node = reference.identifier;
+            const parent = node.parent;
+
+            return (
+                parent.type === "MemberExpression" &&
+                parent.object === node &&
+                !isAllowed(parent)
+            );
+        }
+
+        /**
+         * Checks if removing the ExpressionStatement node will cause ASI to
+         * break.
+         * eg.
+         * foo()
+         * console.log();
+         * [1, 2, 3].forEach(a => doSomething(a))
+         *
+         * Removing the console.log(); statement should leave two statements, but
+         * here the two statements will become one because [ causes continuation after
+         * foo().
+         * @param {ASTNode} node The ExpressionStatement node to check.
+         * @returns {boolean} `true` if ASI will break after removing the ExpressionStatement
+         *      node.
+         */
+        function maybeAsiHazard(node) {
+            const SAFE_TOKENS_BEFORE = /^[:;{]$/u; // One of :;{
+            const UNSAFE_CHARS_AFTER = /^[-[(/+`]/u; // One of [(/+-`
+
+            const tokenBefore = sourceCode.getTokenBefore(node);
+            const tokenAfter = sourceCode.getTokenAfter(node);
+
+            return (
+                Boolean(tokenAfter) &&
+                UNSAFE_CHARS_AFTER.test(tokenAfter.value) &&
+                tokenAfter.value !== "++" &&
+                tokenAfter.value !== "--" &&
+                Boolean(tokenBefore) &&
+                !SAFE_TOKENS_BEFORE.test(tokenBefore.value)
+            );
+        }
+
+        /**
+         * Checks if the MemberExpression node's parent.parent.parent is a
+         * Program, BlockStatement, StaticBlock, or SwitchCase node. This check
+         * is necessary to avoid providing a suggestion that might cause a syntax error.
+         *
+         * eg. if (a) console.log(b), removing console.log() here will lead to a
+         *     syntax error.
+         *     if (a) { console.log(b) }, removing console.log() here is acceptable.
+         *
+         * Additionally, it checks if the callee of the CallExpression node is
+         * the node itself.
+         *
+         * eg. foo(console.log), cannot provide a suggestion here.
+         * @param {ASTNode} node The MemberExpression node to check.
+         * @returns {boolean} `true` if a suggestion can be provided for a node.
+         */
+        function canProvideSuggestions(node) {
+            return (
+                node.parent.type === "CallExpression" &&
+                node.parent.callee === node &&
+                node.parent.parent.type === "ExpressionStatement" &&
+                astUtils.STATEMENT_LIST_PARENTS.has(node.parent.parent.parent.type) &&
+                !maybeAsiHazard(node.parent.parent)
+            );
+        }
+
+        /**
+         * Reports the given reference as a violation.
+         * @param {eslint-scope.Reference} reference The reference to report.
+         * @returns {void}
+         */
+        function report(reference) {
+            const node = reference.identifier.parent;
+
+            const propertyName = astUtils.getStaticPropertyName(node);
+
+            context.report({
+                node,
+                loc: node.loc,
+                messageId: "unexpected",
+                suggest: canProvideSuggestions(node)
+                    ? [{
+                        messageId: "removeConsole",
+                        data: { propertyName },
+                        fix(fixer) {
+                            return fixer.remove(node.parent.parent);
+                        }
+                    }]
+                    : []
+            });
+        }
+
+        return {
+            "Program:exit"(node) {
+                const scope = sourceCode.getScope(node);
+                const consoleVar = astUtils.getVariableByName(scope, "console");
+                const shadowed = consoleVar && consoleVar.defs.length > 0;
+
+                /*
+                 * 'scope.through' includes all references to undefined
+                 * variables. If the variable 'console' is not defined, it uses
+                 * 'scope.through'.
+                 */
+                const references = consoleVar
+                    ? consoleVar.references
+                    : scope.through.filter(isConsole);
+
+                if (!shadowed) {
+                    references
+                        .filter(isMemberAccessExceptAllowed)
+                        .forEach(report);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-const-assign.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-const-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-const-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,56 @@
+/**
+ * @fileoverview A rule to disallow modifying variables that are declared using `const`
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow reassigning `const` variables",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-const-assign"
+        },
+
+        schema: [],
+
+        messages: {
+            const: "'{{name}}' is constant."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Finds and reports references that are non initializer and writable.
+         * @param {Variable} variable A variable to check.
+         * @returns {void}
+         */
+        function checkVariable(variable) {
+            astUtils.getModifyingReferences(variable.references).forEach(reference => {
+                context.report({ node: reference.identifier, messageId: "const", data: { name: reference.identifier.name } });
+            });
+        }
+
+        return {
+            VariableDeclaration(node) {
+                if (node.kind === "const") {
+                    sourceCode.getDeclaredVariables(node).forEach(checkVariable);
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-constant-binary-expression.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-constant-binary-expression.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-constant-binary-expression.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,509 @@
+/**
+ * @fileoverview Rule to flag constant comparisons and logical expressions that always/never short circuit
+ * @author Jordan Eldredge <https://jordaneldredge.com>
+ */
+
+"use strict";
+
+const globals = require("globals");
+const { isNullLiteral, isConstant, isReferenceToGlobalVariable, isLogicalAssignmentOperator } = require("./utils/ast-utils");
+
+const NUMERIC_OR_STRING_BINARY_OPERATORS = new Set(["+", "-", "*", "/", "%", "|", "^", "&", "**", "<<", ">>", ">>>"]);
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a node is `null` or `undefined`. Similar to the one
+ * found in ast-utils.js, but this one correctly handles the edge case that
+ * `undefined` has been redefined.
+ * @param {Scope} scope Scope in which the expression was found.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} Whether or not the node is a `null` or `undefined`.
+ * @public
+ */
+function isNullOrUndefined(scope, node) {
+    return (
+        isNullLiteral(node) ||
+        (node.type === "Identifier" && node.name === "undefined" && isReferenceToGlobalVariable(scope, node)) ||
+        (node.type === "UnaryExpression" && node.operator === "void")
+    );
+}
+
+/**
+ * Test if an AST node has a statically knowable constant nullishness. Meaning,
+ * it will always resolve to a constant value of either: `null`, `undefined`
+ * or not `null` _or_ `undefined`. An expression that can vary between those
+ * three states at runtime would return `false`.
+ * @param {Scope} scope The scope in which the node was found.
+ * @param {ASTNode} node The AST node being tested.
+ * @param {boolean} nonNullish if `true` then nullish values are not considered constant.
+ * @returns {boolean} Does `node` have constant nullishness?
+ */
+function hasConstantNullishness(scope, node, nonNullish) {
+    if (nonNullish && isNullOrUndefined(scope, node)) {
+        return false;
+    }
+
+    switch (node.type) {
+        case "ObjectExpression": // Objects are never nullish
+        case "ArrayExpression": // Arrays are never nullish
+        case "ArrowFunctionExpression": // Functions never nullish
+        case "FunctionExpression": // Functions are never nullish
+        case "ClassExpression": // Classes are never nullish
+        case "NewExpression": // Objects are never nullish
+        case "Literal": // Nullish, or non-nullish, literals never change
+        case "TemplateLiteral": // A string is never nullish
+        case "UpdateExpression": // Numbers are never nullish
+        case "BinaryExpression": // Numbers, strings, or booleans are never nullish
+            return true;
+        case "CallExpression": {
+            if (node.callee.type !== "Identifier") {
+                return false;
+            }
+            const functionName = node.callee.name;
+
+            return (functionName === "Boolean" || functionName === "String" || functionName === "Number") &&
+                isReferenceToGlobalVariable(scope, node.callee);
+        }
+        case "LogicalExpression": {
+            return node.operator === "??" && hasConstantNullishness(scope, node.right, true);
+        }
+        case "AssignmentExpression":
+            if (node.operator === "=") {
+                return hasConstantNullishness(scope, node.right, nonNullish);
+            }
+
+            /*
+             * Handling short-circuiting assignment operators would require
+             * walking the scope. We won't attempt that (for now...) /
+             */
+            if (isLogicalAssignmentOperator(node.operator)) {
+                return false;
+            }
+
+            /*
+             * The remaining assignment expressions all result in a numeric or
+             * string (non-nullish) value:
+             *   "+=", "-=", "*=", "/=", "%=", "<<=", ">>=", ">>>=", "|=", "^=", "&="
+             */
+
+            return true;
+        case "UnaryExpression":
+
+            /*
+             * "void" Always returns `undefined`
+             * "typeof" All types are strings, and thus non-nullish
+             * "!" Boolean is never nullish
+             * "delete" Returns a boolean, which is never nullish
+             * Math operators always return numbers or strings, neither of which
+             * are non-nullish "+", "-", "~"
+             */
+
+            return true;
+        case "SequenceExpression": {
+            const last = node.expressions[node.expressions.length - 1];
+
+            return hasConstantNullishness(scope, last, nonNullish);
+        }
+        case "Identifier":
+            return node.name === "undefined" && isReferenceToGlobalVariable(scope, node);
+        case "JSXElement": // ESLint has a policy of not assuming any specific JSX behavior.
+        case "JSXFragment":
+            return false;
+        default:
+            return false;
+    }
+}
+
+/**
+ * Test if an AST node is a boolean value that never changes. Specifically we
+ * test for:
+ * 1. Literal booleans (`true` or `false`)
+ * 2. Unary `!` expressions with a constant value
+ * 3. Constant booleans created via the `Boolean` global function
+ * @param {Scope} scope The scope in which the node was found.
+ * @param {ASTNode} node The node to test
+ * @returns {boolean} Is `node` guaranteed to be a boolean?
+ */
+function isStaticBoolean(scope, node) {
+    switch (node.type) {
+        case "Literal":
+            return typeof node.value === "boolean";
+        case "CallExpression":
+            return node.callee.type === "Identifier" && node.callee.name === "Boolean" &&
+              isReferenceToGlobalVariable(scope, node.callee) &&
+              (node.arguments.length === 0 || isConstant(scope, node.arguments[0], true));
+        case "UnaryExpression":
+            return node.operator === "!" && isConstant(scope, node.argument, true);
+        default:
+            return false;
+    }
+}
+
+
+/**
+ * Test if an AST node will always give the same result when compared to a
+ * boolean value. Note that comparison to boolean values is different than
+ * truthiness.
+ * https://262.ecma-international.org/5.1/#sec-11.9.3
+ *
+ * Javascript `==` operator works by converting the boolean to `1` (true) or
+ * `+0` (false) and then checks the values `==` equality to that number.
+ * @param {Scope} scope The scope in which node was found.
+ * @param {ASTNode} node The node to test.
+ * @returns {boolean} Will `node` always coerce to the same boolean value?
+ */
+function hasConstantLooseBooleanComparison(scope, node) {
+    switch (node.type) {
+        case "ObjectExpression":
+        case "ClassExpression":
+
+            /**
+             * In theory objects like:
+             *
+             * `{toString: () => a}`
+             * `{valueOf: () => a}`
+             *
+             * Or a classes like:
+             *
+             * `class { static toString() { return a } }`
+             * `class { static valueOf() { return a } }`
+             *
+             * Are not constant verifiably when `inBooleanPosition` is
+             * false, but it's an edge case we've opted not to handle.
+             */
+            return true;
+        case "ArrayExpression": {
+            const nonSpreadElements = node.elements.filter(e =>
+
+                // Elements can be `null` in sparse arrays: `[,,]`;
+                e !== null && e.type !== "SpreadElement");
+
+
+            /*
+             * Possible future direction if needed: We could check if the
+             * single value would result in variable boolean comparison.
+             * For now we will err on the side of caution since `[x]` could
+             * evaluate to `[0]` or `[1]`.
+             */
+            return node.elements.length === 0 || nonSpreadElements.length > 1;
+        }
+        case "ArrowFunctionExpression":
+        case "FunctionExpression":
+            return true;
+        case "UnaryExpression":
+            if (node.operator === "void" || // Always returns `undefined`
+                node.operator === "typeof" // All `typeof` strings, when coerced to number, are not 0 or 1.
+            ) {
+                return true;
+            }
+            if (node.operator === "!") {
+                return isConstant(scope, node.argument, true);
+            }
+
+            /*
+             * We won't try to reason about +, -, ~, or delete
+             * In theory, for the mathematical operators, we could look at the
+             * argument and try to determine if it coerces to a constant numeric
+             * value.
+             */
+            return false;
+        case "NewExpression": // Objects might have custom `.valueOf` or `.toString`.
+            return false;
+        case "CallExpression": {
+            if (node.callee.type === "Identifier" &&
+                node.callee.name === "Boolean" &&
+                isReferenceToGlobalVariable(scope, node.callee)
+            ) {
+                return node.arguments.length === 0 || isConstant(scope, node.arguments[0], true);
+            }
+            return false;
+        }
+        case "Literal": // True or false, literals never change
+            return true;
+        case "Identifier":
+            return node.name === "undefined" && isReferenceToGlobalVariable(scope, node);
+        case "TemplateLiteral":
+
+            /*
+             * In theory we could try to check if the quasi are sufficient to
+             * prove that the expression will always be true, but it would be
+             * tricky to get right. For example: `000.${foo}000`
+             */
+            return node.expressions.length === 0;
+        case "AssignmentExpression":
+            if (node.operator === "=") {
+                return hasConstantLooseBooleanComparison(scope, node.right);
+            }
+
+            /*
+             * Handling short-circuiting assignment operators would require
+             * walking the scope. We won't attempt that (for now...)
+             *
+             * The remaining assignment expressions all result in a numeric or
+             * string (non-nullish) values which could be truthy or falsy:
+             *   "+=", "-=", "*=", "/=", "%=", "<<=", ">>=", ">>>=", "|=", "^=", "&="
+             */
+            return false;
+        case "SequenceExpression": {
+            const last = node.expressions[node.expressions.length - 1];
+
+            return hasConstantLooseBooleanComparison(scope, last);
+        }
+        case "JSXElement": // ESLint has a policy of not assuming any specific JSX behavior.
+        case "JSXFragment":
+            return false;
+        default:
+            return false;
+    }
+}
+
+
+/**
+ * Test if an AST node will always give the same result when _strictly_ compared
+ * to a boolean value. This can happen if the expression can never be boolean, or
+ * if it is always the same boolean value.
+ * @param {Scope} scope The scope in which the node was found.
+ * @param {ASTNode} node The node to test
+ * @returns {boolean} Will `node` always give the same result when compared to a
+ * static boolean value?
+ */
+function hasConstantStrictBooleanComparison(scope, node) {
+    switch (node.type) {
+        case "ObjectExpression": // Objects are not booleans
+        case "ArrayExpression": // Arrays are not booleans
+        case "ArrowFunctionExpression": // Functions are not booleans
+        case "FunctionExpression":
+        case "ClassExpression": // Classes are not booleans
+        case "NewExpression": // Objects are not booleans
+        case "TemplateLiteral": // Strings are not booleans
+        case "Literal": // True, false, or not boolean, literals never change.
+        case "UpdateExpression": // Numbers are not booleans
+            return true;
+        case "BinaryExpression":
+            return NUMERIC_OR_STRING_BINARY_OPERATORS.has(node.operator);
+        case "UnaryExpression": {
+            if (node.operator === "delete") {
+                return false;
+            }
+            if (node.operator === "!") {
+                return isConstant(scope, node.argument, true);
+            }
+
+            /*
+             * The remaining operators return either strings or numbers, neither
+             * of which are boolean.
+             */
+            return true;
+        }
+        case "SequenceExpression": {
+            const last = node.expressions[node.expressions.length - 1];
+
+            return hasConstantStrictBooleanComparison(scope, last);
+        }
+        case "Identifier":
+            return node.name === "undefined" && isReferenceToGlobalVariable(scope, node);
+        case "AssignmentExpression":
+            if (node.operator === "=") {
+                return hasConstantStrictBooleanComparison(scope, node.right);
+            }
+
+            /*
+             * Handling short-circuiting assignment operators would require
+             * walking the scope. We won't attempt that (for now...)
+             */
+            if (isLogicalAssignmentOperator(node.operator)) {
+                return false;
+            }
+
+            /*
+             * The remaining assignment expressions all result in either a number
+             * or a string, neither of which can ever be boolean.
+             */
+            return true;
+        case "CallExpression": {
+            if (node.callee.type !== "Identifier") {
+                return false;
+            }
+            const functionName = node.callee.name;
+
+            if (
+                (functionName === "String" || functionName === "Number") &&
+                isReferenceToGlobalVariable(scope, node.callee)
+            ) {
+                return true;
+            }
+            if (functionName === "Boolean" && isReferenceToGlobalVariable(scope, node.callee)) {
+                return (
+                    node.arguments.length === 0 || isConstant(scope, node.arguments[0], true));
+            }
+            return false;
+        }
+        case "JSXElement": // ESLint has a policy of not assuming any specific JSX behavior.
+        case "JSXFragment":
+            return false;
+        default:
+            return false;
+    }
+}
+
+/**
+ * Test if an AST node will always result in a newly constructed object
+ * @param {Scope} scope The scope in which the node was found.
+ * @param {ASTNode} node The node to test
+ * @returns {boolean} Will `node` always be new?
+ */
+function isAlwaysNew(scope, node) {
+    switch (node.type) {
+        case "ObjectExpression":
+        case "ArrayExpression":
+        case "ArrowFunctionExpression":
+        case "FunctionExpression":
+        case "ClassExpression":
+            return true;
+        case "NewExpression": {
+            if (node.callee.type !== "Identifier") {
+                return false;
+            }
+
+            /*
+             * All the built-in constructors are always new, but
+             * user-defined constructors could return a sentinel
+             * object.
+             *
+             * Catching these is especially useful for primitive constructors
+             * which return boxed values, a surprising gotcha' in JavaScript.
+             */
+            return Object.hasOwnProperty.call(globals.builtin, node.callee.name) &&
+              isReferenceToGlobalVariable(scope, node.callee);
+        }
+        case "Literal":
+
+            // Regular expressions are objects, and thus always new
+            return typeof node.regex === "object";
+        case "SequenceExpression": {
+            const last = node.expressions[node.expressions.length - 1];
+
+            return isAlwaysNew(scope, last);
+        }
+        case "AssignmentExpression":
+            if (node.operator === "=") {
+                return isAlwaysNew(scope, node.right);
+            }
+            return false;
+        case "ConditionalExpression":
+            return isAlwaysNew(scope, node.consequent) && isAlwaysNew(scope, node.alternate);
+        case "JSXElement": // ESLint has a policy of not assuming any specific JSX behavior.
+        case "JSXFragment":
+            return false;
+        default:
+            return false;
+    }
+}
+
+/**
+ * Checks if one operand will cause the result to be constant.
+ * @param {Scope} scope Scope in which the expression was found.
+ * @param {ASTNode} a One side of the expression
+ * @param {ASTNode} b The other side of the expression
+ * @param {string} operator The binary expression operator
+ * @returns {ASTNode | null} The node which will cause the expression to have a constant result.
+ */
+function findBinaryExpressionConstantOperand(scope, a, b, operator) {
+    if (operator === "==" || operator === "!=") {
+        if (
+            (isNullOrUndefined(scope, a) && hasConstantNullishness(scope, b, false)) ||
+            (isStaticBoolean(scope, a) && hasConstantLooseBooleanComparison(scope, b))
+        ) {
+            return b;
+        }
+    } else if (operator === "===" || operator === "!==") {
+        if (
+            (isNullOrUndefined(scope, a) && hasConstantNullishness(scope, b, false)) ||
+            (isStaticBoolean(scope, a) && hasConstantStrictBooleanComparison(scope, b))
+        ) {
+            return b;
+        }
+    }
+    return null;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+        docs: {
+            description: "Disallow expressions where the operation doesn't affect the value",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-constant-binary-expression"
+        },
+        schema: [],
+        messages: {
+            constantBinaryOperand: "Unexpected constant binary expression. Compares constantly with the {{otherSide}}-hand side of the `{{operator}}`.",
+            constantShortCircuit: "Unexpected constant {{property}} on the left-hand side of a `{{operator}}` expression.",
+            alwaysNew: "Unexpected comparison to newly constructed object. These two values can never be equal.",
+            bothAlwaysNew: "Unexpected comparison of two newly constructed objects. These two values can never be equal."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        return {
+            LogicalExpression(node) {
+                const { operator, left } = node;
+                const scope = sourceCode.getScope(node);
+
+                if ((operator === "&&" || operator === "||") && isConstant(scope, left, true)) {
+                    context.report({ node: left, messageId: "constantShortCircuit", data: { property: "truthiness", operator } });
+                } else if (operator === "??" && hasConstantNullishness(scope, left, false)) {
+                    context.report({ node: left, messageId: "constantShortCircuit", data: { property: "nullishness", operator } });
+                }
+            },
+            BinaryExpression(node) {
+                const scope = sourceCode.getScope(node);
+                const { right, left, operator } = node;
+                const rightConstantOperand = findBinaryExpressionConstantOperand(scope, left, right, operator);
+                const leftConstantOperand = findBinaryExpressionConstantOperand(scope, right, left, operator);
+
+                if (rightConstantOperand) {
+                    context.report({ node: rightConstantOperand, messageId: "constantBinaryOperand", data: { operator, otherSide: "left" } });
+                } else if (leftConstantOperand) {
+                    context.report({ node: leftConstantOperand, messageId: "constantBinaryOperand", data: { operator, otherSide: "right" } });
+                } else if (operator === "===" || operator === "!==") {
+                    if (isAlwaysNew(scope, left)) {
+                        context.report({ node: left, messageId: "alwaysNew" });
+                    } else if (isAlwaysNew(scope, right)) {
+                        context.report({ node: right, messageId: "alwaysNew" });
+                    }
+                } else if (operator === "==" || operator === "!=") {
+
+                    /*
+                     * If both sides are "new", then both sides are objects and
+                     * therefore they will be compared by reference even with `==`
+                     * equality.
+                     */
+                    if (isAlwaysNew(scope, left) && isAlwaysNew(scope, right)) {
+                        context.report({ node: left, messageId: "bothAlwaysNew" });
+                    }
+                }
+
+            }
+
+            /*
+             * In theory we could handle short-circuiting assignment operators,
+             * for some constant values, but that would require walking the
+             * scope to find the value of the variable being assigned. This is
+             * dependant on https://github.com/eslint/eslint/issues/13776
+             *
+             * AssignmentExpression() {},
+             */
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-constant-condition.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-constant-condition.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-constant-condition.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,150 @@
+/**
+ * @fileoverview Rule to flag use constant conditions
+ * @author Christian Schulz <http://rndm.de>
+ */
+
+"use strict";
+
+const { isConstant } = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow constant expressions in conditions",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-constant-condition"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    checkLoops: {
+                        type: "boolean",
+                        default: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpected: "Unexpected constant condition."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {},
+            checkLoops = options.checkLoops !== false,
+            loopSetStack = [];
+        const sourceCode = context.sourceCode;
+
+        let loopsInCurrentScope = new Set();
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Tracks when the given node contains a constant condition.
+         * @param {ASTNode} node The AST node to check.
+         * @returns {void}
+         * @private
+         */
+        function trackConstantConditionLoop(node) {
+            if (node.test && isConstant(sourceCode.getScope(node), node.test, true)) {
+                loopsInCurrentScope.add(node);
+            }
+        }
+
+        /**
+         * Reports when the set contains the given constant condition node
+         * @param {ASTNode} node The AST node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkConstantConditionLoopInSet(node) {
+            if (loopsInCurrentScope.has(node)) {
+                loopsInCurrentScope.delete(node);
+                context.report({ node: node.test, messageId: "unexpected" });
+            }
+        }
+
+        /**
+         * Reports when the given node contains a constant condition.
+         * @param {ASTNode} node The AST node to check.
+         * @returns {void}
+         * @private
+         */
+        function reportIfConstant(node) {
+            if (node.test && isConstant(sourceCode.getScope(node), node.test, true)) {
+                context.report({ node: node.test, messageId: "unexpected" });
+            }
+        }
+
+        /**
+         * Stores current set of constant loops in loopSetStack temporarily
+         * and uses a new set to track constant loops
+         * @returns {void}
+         * @private
+         */
+        function enterFunction() {
+            loopSetStack.push(loopsInCurrentScope);
+            loopsInCurrentScope = new Set();
+        }
+
+        /**
+         * Reports when the set still contains stored constant conditions
+         * @returns {void}
+         * @private
+         */
+        function exitFunction() {
+            loopsInCurrentScope = loopSetStack.pop();
+        }
+
+        /**
+         * Checks node when checkLoops option is enabled
+         * @param {ASTNode} node The AST node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkLoop(node) {
+            if (checkLoops) {
+                trackConstantConditionLoop(node);
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            ConditionalExpression: reportIfConstant,
+            IfStatement: reportIfConstant,
+            WhileStatement: checkLoop,
+            "WhileStatement:exit": checkConstantConditionLoopInSet,
+            DoWhileStatement: checkLoop,
+            "DoWhileStatement:exit": checkConstantConditionLoopInSet,
+            ForStatement: checkLoop,
+            "ForStatement > .test": node => checkLoop(node.parent),
+            "ForStatement:exit": checkConstantConditionLoopInSet,
+            FunctionDeclaration: enterFunction,
+            "FunctionDeclaration:exit": exitFunction,
+            FunctionExpression: enterFunction,
+            "FunctionExpression:exit": exitFunction,
+            YieldExpression: () => loopsInCurrentScope.clear()
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-constructor-return.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-constructor-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-constructor-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,62 @@
+/**
+ * @fileoverview Rule to disallow returning value from constructor.
+ * @author Pig Fang <https://github.com/g-plane>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow returning value from constructor",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-constructor-return"
+        },
+
+        schema: {},
+
+        fixable: null,
+
+        messages: {
+            unexpected: "Unexpected return statement in constructor."
+        }
+    },
+
+    create(context) {
+        const stack = [];
+
+        return {
+            onCodePathStart(_, node) {
+                stack.push(node);
+            },
+            onCodePathEnd() {
+                stack.pop();
+            },
+            ReturnStatement(node) {
+                const last = stack[stack.length - 1];
+
+                if (!last.parent) {
+                    return;
+                }
+
+                if (
+                    last.parent.type === "MethodDefinition" &&
+                    last.parent.kind === "constructor" &&
+                    (node.parent.parent === last || node.argument)
+                ) {
+                    context.report({
+                        node,
+                        messageId: "unexpected"
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-continue.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-continue.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-continue.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,39 @@
+/**
+ * @fileoverview Rule to flag use of continue statement
+ * @author Borislav Zhivkov
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `continue` statements",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-continue"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "Unexpected use of continue statement."
+        }
+    },
+
+    create(context) {
+
+        return {
+            ContinueStatement(node) {
+                context.report({ node, messageId: "unexpected" });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-control-regex.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-control-regex.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-control-regex.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,138 @@
+/**
+ * @fileoverview Rule to forbid control characters from regular expressions.
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+const RegExpValidator = require("@eslint-community/regexpp").RegExpValidator;
+const collector = new (class {
+    constructor() {
+        this._source = "";
+        this._controlChars = [];
+        this._validator = new RegExpValidator(this);
+    }
+
+    onPatternEnter() {
+
+        /*
+         * `RegExpValidator` may parse the pattern twice in one `validatePattern`.
+         * So `this._controlChars` should be cleared here as well.
+         *
+         * For example, the `/(?<a>\x1f)/` regex will parse the pattern twice.
+         * This is based on the content described in Annex B.
+         * If the regex contains a `GroupName` and the `u` flag is not used, `ParseText` will be called twice.
+         * See https://tc39.es/ecma262/2023/multipage/additional-ecmascript-features-for-web-browsers.html#sec-parsepattern-annexb
+         */
+        this._controlChars = [];
+    }
+
+    onCharacter(start, end, cp) {
+        if (cp >= 0x00 &&
+            cp <= 0x1F &&
+            (
+                this._source.codePointAt(start) === cp ||
+                this._source.slice(start, end).startsWith("\\x") ||
+                this._source.slice(start, end).startsWith("\\u")
+            )
+        ) {
+            this._controlChars.push(`\\x${`0${cp.toString(16)}`.slice(-2)}`);
+        }
+    }
+
+    collectControlChars(regexpStr, flags) {
+        const uFlag = typeof flags === "string" && flags.includes("u");
+        const vFlag = typeof flags === "string" && flags.includes("v");
+
+        this._controlChars = [];
+        this._source = regexpStr;
+
+        try {
+            this._validator.validatePattern(regexpStr, void 0, void 0, { unicode: uFlag, unicodeSets: vFlag }); // Call onCharacter hook
+        } catch {
+
+            // Ignore syntax errors in RegExp.
+        }
+        return this._controlChars;
+    }
+})();
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow control characters in regular expressions",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-control-regex"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "Unexpected control character(s) in regular expression: {{controlChars}}."
+        }
+    },
+
+    create(context) {
+
+        /**
+         * Get the regex expression
+         * @param {ASTNode} node `Literal` node to evaluate
+         * @returns {{ pattern: string, flags: string | null } | null} Regex if found (the given node is either a regex literal
+         * or a string literal that is the pattern argument of a RegExp constructor call). Otherwise `null`. If flags cannot be determined,
+         * the `flags` property will be `null`.
+         * @private
+         */
+        function getRegExp(node) {
+            if (node.regex) {
+                return node.regex;
+            }
+            if (typeof node.value === "string" &&
+                (node.parent.type === "NewExpression" || node.parent.type === "CallExpression") &&
+                node.parent.callee.type === "Identifier" &&
+                node.parent.callee.name === "RegExp" &&
+                node.parent.arguments[0] === node
+            ) {
+                const pattern = node.value;
+                const flags =
+                    node.parent.arguments.length > 1 &&
+                    node.parent.arguments[1].type === "Literal" &&
+                    typeof node.parent.arguments[1].value === "string"
+                        ? node.parent.arguments[1].value
+                        : null;
+
+                return { pattern, flags };
+            }
+
+            return null;
+        }
+
+        return {
+            Literal(node) {
+                const regExp = getRegExp(node);
+
+                if (regExp) {
+                    const { pattern, flags } = regExp;
+                    const controlCharacters = collector.collectControlChars(pattern, flags);
+
+                    if (controlCharacters.length > 0) {
+                        context.report({
+                            node,
+                            messageId: "unexpected",
+                            data: {
+                                controlChars: controlCharacters.join(", ")
+                            }
+                        });
+                    }
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-debugger.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-debugger.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-debugger.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,43 @@
+/**
+ * @fileoverview Rule to flag use of a debugger statement
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow the use of `debugger`",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-debugger"
+        },
+
+        fixable: null,
+        schema: [],
+
+        messages: {
+            unexpected: "Unexpected 'debugger' statement."
+        }
+    },
+
+    create(context) {
+
+        return {
+            DebuggerStatement(node) {
+                context.report({
+                    node,
+                    messageId: "unexpected"
+                });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-delete-var.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-delete-var.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-delete-var.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,42 @@
+/**
+ * @fileoverview Rule to flag when deleting variables
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow deleting variables",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-delete-var"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "Variables should not be deleted."
+        }
+    },
+
+    create(context) {
+
+        return {
+
+            UnaryExpression(node) {
+                if (node.operator === "delete" && node.argument.type === "Identifier") {
+                    context.report({ node, messageId: "unexpected" });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-div-regex.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-div-regex.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-div-regex.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,53 @@
+/**
+ * @fileoverview Rule to check for ambiguous div operator in regexes
+ * @author Matt DuVall <http://www.mattduvall.com>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow equal signs explicitly at the beginning of regular expressions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-div-regex"
+        },
+
+        fixable: "code",
+
+        schema: [],
+
+        messages: {
+            unexpected: "A regular expression literal can be confused with '/='."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        return {
+
+            Literal(node) {
+                const token = sourceCode.getFirstToken(node);
+
+                if (token.type === "RegularExpression" && token.value[1] === "=") {
+                    context.report({
+                        node,
+                        messageId: "unexpected",
+                        fix(fixer) {
+                            return fixer.replaceTextRange([token.range[0] + 1, token.range[0] + 2], "[=]");
+                        }
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-dupe-args.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-dupe-args.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-dupe-args.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,82 @@
+/**
+ * @fileoverview Rule to flag duplicate arguments
+ * @author Jamund Ferguson
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow duplicate arguments in `function` definitions",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-dupe-args"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "Duplicate param '{{name}}'."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Checks whether or not a given definition is a parameter's.
+         * @param {eslint-scope.DefEntry} def A definition to check.
+         * @returns {boolean} `true` if the definition is a parameter's.
+         */
+        function isParameter(def) {
+            return def.type === "Parameter";
+        }
+
+        /**
+         * Determines if a given node has duplicate parameters.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkParams(node) {
+            const variables = sourceCode.getDeclaredVariables(node);
+
+            for (let i = 0; i < variables.length; ++i) {
+                const variable = variables[i];
+
+                // Checks and reports duplications.
+                const defs = variable.defs.filter(isParameter);
+
+                if (defs.length >= 2) {
+                    context.report({
+                        node,
+                        messageId: "unexpected",
+                        data: { name: variable.name }
+                    });
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            FunctionDeclaration: checkParams,
+            FunctionExpression: checkParams
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-dupe-class-members.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-dupe-class-members.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-dupe-class-members.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,104 @@
+/**
+ * @fileoverview A rule to disallow duplicate name in class members.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow duplicate class members",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-dupe-class-members"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "Duplicate name '{{name}}'."
+        }
+    },
+
+    create(context) {
+        let stack = [];
+
+        /**
+         * Gets state of a given member name.
+         * @param {string} name A name of a member.
+         * @param {boolean} isStatic A flag which specifies that is a static member.
+         * @returns {Object} A state of a given member name.
+         *   - retv.init {boolean} A flag which shows the name is declared as normal member.
+         *   - retv.get {boolean} A flag which shows the name is declared as getter.
+         *   - retv.set {boolean} A flag which shows the name is declared as setter.
+         */
+        function getState(name, isStatic) {
+            const stateMap = stack[stack.length - 1];
+            const key = `$${name}`; // to avoid "__proto__".
+
+            if (!stateMap[key]) {
+                stateMap[key] = {
+                    nonStatic: { init: false, get: false, set: false },
+                    static: { init: false, get: false, set: false }
+                };
+            }
+
+            return stateMap[key][isStatic ? "static" : "nonStatic"];
+        }
+
+        return {
+
+            // Initializes the stack of state of member declarations.
+            Program() {
+                stack = [];
+            },
+
+            // Initializes state of member declarations for the class.
+            ClassBody() {
+                stack.push(Object.create(null));
+            },
+
+            // Disposes the state for the class.
+            "ClassBody:exit"() {
+                stack.pop();
+            },
+
+            // Reports the node if its name has been declared already.
+            "MethodDefinition, PropertyDefinition"(node) {
+                const name = astUtils.getStaticPropertyName(node);
+                const kind = node.type === "MethodDefinition" ? node.kind : "field";
+
+                if (name === null || kind === "constructor") {
+                    return;
+                }
+
+                const state = getState(name, node.static);
+                let isDuplicate = false;
+
+                if (kind === "get") {
+                    isDuplicate = (state.init || state.get);
+                    state.get = true;
+                } else if (kind === "set") {
+                    isDuplicate = (state.init || state.set);
+                    state.set = true;
+                } else {
+                    isDuplicate = (state.init || state.get || state.set);
+                    state.init = true;
+                }
+
+                if (isDuplicate) {
+                    context.report({ node, messageId: "unexpected", data: { name } });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-dupe-else-if.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-dupe-else-if.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-dupe-else-if.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,122 @@
+/**
+ * @fileoverview Rule to disallow duplicate conditions in if-else-if chains
+ * @author Milos Djermanovic
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines whether the first given array is a subset of the second given array.
+ * @param {Function} comparator A function to compare two elements, should return `true` if they are equal.
+ * @param {Array} arrA The array to compare from.
+ * @param {Array} arrB The array to compare against.
+ * @returns {boolean} `true` if the array `arrA` is a subset of the array `arrB`.
+ */
+function isSubsetByComparator(comparator, arrA, arrB) {
+    return arrA.every(a => arrB.some(b => comparator(a, b)));
+}
+
+/**
+ * Splits the given node by the given logical operator.
+ * @param {string} operator Logical operator `||` or `&&`.
+ * @param {ASTNode} node The node to split.
+ * @returns {ASTNode[]} Array of conditions that makes the node when joined by the operator.
+ */
+function splitByLogicalOperator(operator, node) {
+    if (node.type === "LogicalExpression" && node.operator === operator) {
+        return [...splitByLogicalOperator(operator, node.left), ...splitByLogicalOperator(operator, node.right)];
+    }
+    return [node];
+}
+
+const splitByOr = splitByLogicalOperator.bind(null, "||");
+const splitByAnd = splitByLogicalOperator.bind(null, "&&");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow duplicate conditions in if-else-if chains",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-dupe-else-if"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "This branch can never execute. Its condition is a duplicate or covered by previous conditions in the if-else-if chain."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Determines whether the two given nodes are considered to be equal. In particular, given that the nodes
+         * represent expressions in a boolean context, `||` and `&&` can be considered as commutative operators.
+         * @param {ASTNode} a First node.
+         * @param {ASTNode} b Second node.
+         * @returns {boolean} `true` if the nodes are considered to be equal.
+         */
+        function equal(a, b) {
+            if (a.type !== b.type) {
+                return false;
+            }
+
+            if (
+                a.type === "LogicalExpression" &&
+                (a.operator === "||" || a.operator === "&&") &&
+                a.operator === b.operator
+            ) {
+                return equal(a.left, b.left) && equal(a.right, b.right) ||
+                    equal(a.left, b.right) && equal(a.right, b.left);
+            }
+
+            return astUtils.equalTokens(a, b, sourceCode);
+        }
+
+        const isSubset = isSubsetByComparator.bind(null, equal);
+
+        return {
+            IfStatement(node) {
+                const test = node.test,
+                    conditionsToCheck = test.type === "LogicalExpression" && test.operator === "&&"
+                        ? [test, ...splitByAnd(test)]
+                        : [test];
+                let current = node,
+                    listToCheck = conditionsToCheck.map(c => splitByOr(c).map(splitByAnd));
+
+                while (current.parent && current.parent.type === "IfStatement" && current.parent.alternate === current) {
+                    current = current.parent;
+
+                    const currentOrOperands = splitByOr(current.test).map(splitByAnd);
+
+                    listToCheck = listToCheck.map(orOperands => orOperands.filter(
+                        orOperand => !currentOrOperands.some(currentOrOperand => isSubset(currentOrOperand, orOperand))
+                    ));
+
+                    if (listToCheck.some(orOperands => orOperands.length === 0)) {
+                        context.report({ node: test, messageId: "unexpected" });
+                        break;
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-dupe-keys.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-dupe-keys.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-dupe-keys.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,142 @@
+/**
+ * @fileoverview Rule to flag use of duplicate keys in an object.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const GET_KIND = /^(?:init|get)$/u;
+const SET_KIND = /^(?:init|set)$/u;
+
+/**
+ * The class which stores properties' information of an object.
+ */
+class ObjectInfo {
+
+    /**
+     * @param {ObjectInfo|null} upper The information of the outer object.
+     * @param {ASTNode} node The ObjectExpression node of this information.
+     */
+    constructor(upper, node) {
+        this.upper = upper;
+        this.node = node;
+        this.properties = new Map();
+    }
+
+    /**
+     * Gets the information of the given Property node.
+     * @param {ASTNode} node The Property node to get.
+     * @returns {{get: boolean, set: boolean}} The information of the property.
+     */
+    getPropertyInfo(node) {
+        const name = astUtils.getStaticPropertyName(node);
+
+        if (!this.properties.has(name)) {
+            this.properties.set(name, { get: false, set: false });
+        }
+        return this.properties.get(name);
+    }
+
+    /**
+     * Checks whether the given property has been defined already or not.
+     * @param {ASTNode} node The Property node to check.
+     * @returns {boolean} `true` if the property has been defined.
+     */
+    isPropertyDefined(node) {
+        const entry = this.getPropertyInfo(node);
+
+        return (
+            (GET_KIND.test(node.kind) && entry.get) ||
+            (SET_KIND.test(node.kind) && entry.set)
+        );
+    }
+
+    /**
+     * Defines the given property.
+     * @param {ASTNode} node The Property node to define.
+     * @returns {void}
+     */
+    defineProperty(node) {
+        const entry = this.getPropertyInfo(node);
+
+        if (GET_KIND.test(node.kind)) {
+            entry.get = true;
+        }
+        if (SET_KIND.test(node.kind)) {
+            entry.set = true;
+        }
+    }
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow duplicate keys in object literals",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-dupe-keys"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "Duplicate key '{{name}}'."
+        }
+    },
+
+    create(context) {
+        let info = null;
+
+        return {
+            ObjectExpression(node) {
+                info = new ObjectInfo(info, node);
+            },
+            "ObjectExpression:exit"() {
+                info = info.upper;
+            },
+
+            Property(node) {
+                const name = astUtils.getStaticPropertyName(node);
+
+                // Skip destructuring.
+                if (node.parent.type !== "ObjectExpression") {
+                    return;
+                }
+
+                // Skip if the name is not static.
+                if (name === null) {
+                    return;
+                }
+
+                // Reports if the name is defined already.
+                if (info.isPropertyDefined(node)) {
+                    context.report({
+                        node: info.node,
+                        loc: node.key.loc,
+                        messageId: "unexpected",
+                        data: { name }
+                    });
+                }
+
+                // Update info.
+                info.defineProperty(node);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-duplicate-case.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-duplicate-case.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-duplicate-case.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,71 @@
+/**
+ * @fileoverview Rule to disallow a duplicate case label.
+ * @author Dieter Oberkofler
+ * @author Burak Yigit Kaya
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow duplicate case labels",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-duplicate-case"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "Duplicate case label."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Determines whether the two given nodes are considered to be equal.
+         * @param {ASTNode} a First node.
+         * @param {ASTNode} b Second node.
+         * @returns {boolean} `true` if the nodes are considered to be equal.
+         */
+        function equal(a, b) {
+            if (a.type !== b.type) {
+                return false;
+            }
+
+            return astUtils.equalTokens(a, b, sourceCode);
+        }
+        return {
+            SwitchStatement(node) {
+                const previousTests = [];
+
+                for (const switchCase of node.cases) {
+                    if (switchCase.test) {
+                        const test = switchCase.test;
+
+                        if (previousTests.some(previousTest => equal(previousTest, test))) {
+                            context.report({ node: switchCase, messageId: "unexpected" });
+                        } else {
+                            previousTests.push(test);
+                        }
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-duplicate-imports.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-duplicate-imports.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-duplicate-imports.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,290 @@
+/**
+ * @fileoverview Restrict usage of duplicate imports.
+ * @author Simen Bekkhus
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const NAMED_TYPES = ["ImportSpecifier", "ExportSpecifier"];
+const NAMESPACE_TYPES = [
+    "ImportNamespaceSpecifier",
+    "ExportNamespaceSpecifier"
+];
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/**
+ * Check if an import/export type belongs to (ImportSpecifier|ExportSpecifier) or (ImportNamespaceSpecifier|ExportNamespaceSpecifier).
+ * @param {string} importExportType An import/export type to check.
+ * @param {string} type Can be "named" or "namespace"
+ * @returns {boolean} True if import/export type belongs to (ImportSpecifier|ExportSpecifier) or (ImportNamespaceSpecifier|ExportNamespaceSpecifier) and false if it doesn't.
+ */
+function isImportExportSpecifier(importExportType, type) {
+    const arrayToCheck = type === "named" ? NAMED_TYPES : NAMESPACE_TYPES;
+
+    return arrayToCheck.includes(importExportType);
+}
+
+/**
+ * Return the type of (import|export).
+ * @param {ASTNode} node A node to get.
+ * @returns {string} The type of the (import|export).
+ */
+function getImportExportType(node) {
+    if (node.specifiers && node.specifiers.length > 0) {
+        const nodeSpecifiers = node.specifiers;
+        const index = nodeSpecifiers.findIndex(
+            ({ type }) =>
+                isImportExportSpecifier(type, "named") ||
+                isImportExportSpecifier(type, "namespace")
+        );
+        const i = index > -1 ? index : 0;
+
+        return nodeSpecifiers[i].type;
+    }
+    if (node.type === "ExportAllDeclaration") {
+        if (node.exported) {
+            return "ExportNamespaceSpecifier";
+        }
+        return "ExportAll";
+    }
+    return "SideEffectImport";
+}
+
+/**
+ * Returns a boolean indicates if two (import|export) can be merged
+ * @param {ASTNode} node1 A node to check.
+ * @param {ASTNode} node2 A node to check.
+ * @returns {boolean} True if two (import|export) can be merged, false if they can't.
+ */
+function isImportExportCanBeMerged(node1, node2) {
+    const importExportType1 = getImportExportType(node1);
+    const importExportType2 = getImportExportType(node2);
+
+    if (
+        (importExportType1 === "ExportAll" &&
+            importExportType2 !== "ExportAll" &&
+            importExportType2 !== "SideEffectImport") ||
+        (importExportType1 !== "ExportAll" &&
+            importExportType1 !== "SideEffectImport" &&
+            importExportType2 === "ExportAll")
+    ) {
+        return false;
+    }
+    if (
+        (isImportExportSpecifier(importExportType1, "namespace") &&
+            isImportExportSpecifier(importExportType2, "named")) ||
+        (isImportExportSpecifier(importExportType2, "namespace") &&
+            isImportExportSpecifier(importExportType1, "named"))
+    ) {
+        return false;
+    }
+    return true;
+}
+
+/**
+ * Returns a boolean if we should report (import|export).
+ * @param {ASTNode} node A node to be reported or not.
+ * @param {[ASTNode]} previousNodes An array contains previous nodes of the module imported or exported.
+ * @returns {boolean} True if the (import|export) should be reported.
+ */
+function shouldReportImportExport(node, previousNodes) {
+    let i = 0;
+
+    while (i < previousNodes.length) {
+        if (isImportExportCanBeMerged(node, previousNodes[i])) {
+            return true;
+        }
+        i++;
+    }
+    return false;
+}
+
+/**
+ * Returns array contains only nodes with declarations types equal to type.
+ * @param {[{node: ASTNode, declarationType: string}]} nodes An array contains objects, each object contains a node and a declaration type.
+ * @param {string} type Declaration type.
+ * @returns {[ASTNode]} An array contains only nodes with declarations types equal to type.
+ */
+function getNodesByDeclarationType(nodes, type) {
+    return nodes
+        .filter(({ declarationType }) => declarationType === type)
+        .map(({ node }) => node);
+}
+
+/**
+ * Returns the name of the module imported or re-exported.
+ * @param {ASTNode} node A node to get.
+ * @returns {string} The name of the module, or empty string if no name.
+ */
+function getModule(node) {
+    if (node && node.source && node.source.value) {
+        return node.source.value.trim();
+    }
+    return "";
+}
+
+/**
+ * Checks if the (import|export) can be merged with at least one import or one export, and reports if so.
+ * @param {RuleContext} context The ESLint rule context object.
+ * @param {ASTNode} node A node to get.
+ * @param {Map} modules A Map object contains as a key a module name and as value an array contains objects, each object contains a node and a declaration type.
+ * @param {string} declarationType A declaration type can be an import or export.
+ * @param {boolean} includeExports Whether or not to check for exports in addition to imports.
+ * @returns {void} No return value.
+ */
+function checkAndReport(
+    context,
+    node,
+    modules,
+    declarationType,
+    includeExports
+) {
+    const module = getModule(node);
+
+    if (modules.has(module)) {
+        const previousNodes = modules.get(module);
+        const messagesIds = [];
+        const importNodes = getNodesByDeclarationType(previousNodes, "import");
+        let exportNodes;
+
+        if (includeExports) {
+            exportNodes = getNodesByDeclarationType(previousNodes, "export");
+        }
+        if (declarationType === "import") {
+            if (shouldReportImportExport(node, importNodes)) {
+                messagesIds.push("import");
+            }
+            if (includeExports) {
+                if (shouldReportImportExport(node, exportNodes)) {
+                    messagesIds.push("importAs");
+                }
+            }
+        } else if (declarationType === "export") {
+            if (shouldReportImportExport(node, exportNodes)) {
+                messagesIds.push("export");
+            }
+            if (shouldReportImportExport(node, importNodes)) {
+                messagesIds.push("exportAs");
+            }
+        }
+        messagesIds.forEach(messageId =>
+            context.report({
+                node,
+                messageId,
+                data: {
+                    module
+                }
+            }));
+    }
+}
+
+/**
+ * @callback nodeCallback
+ * @param {ASTNode} node A node to handle.
+ */
+
+/**
+ * Returns a function handling the (imports|exports) of a given file
+ * @param {RuleContext} context The ESLint rule context object.
+ * @param {Map} modules A Map object contains as a key a module name and as value an array contains objects, each object contains a node and a declaration type.
+ * @param {string} declarationType A declaration type can be an import or export.
+ * @param {boolean} includeExports Whether or not to check for exports in addition to imports.
+ * @returns {nodeCallback} A function passed to ESLint to handle the statement.
+ */
+function handleImportsExports(
+    context,
+    modules,
+    declarationType,
+    includeExports
+) {
+    return function(node) {
+        const module = getModule(node);
+
+        if (module) {
+            checkAndReport(
+                context,
+                node,
+                modules,
+                declarationType,
+                includeExports
+            );
+            const currentNode = { node, declarationType };
+            let nodes = [currentNode];
+
+            if (modules.has(module)) {
+                const previousNodes = modules.get(module);
+
+                nodes = [...previousNodes, currentNode];
+            }
+            modules.set(module, nodes);
+        }
+    };
+}
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow duplicate module imports",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-duplicate-imports"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    includeExports: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            import: "'{{module}}' import is duplicated.",
+            importAs: "'{{module}}' import is duplicated as export.",
+            export: "'{{module}}' export is duplicated.",
+            exportAs: "'{{module}}' export is duplicated as import."
+        }
+    },
+
+    create(context) {
+        const includeExports = (context.options[0] || {}).includeExports,
+            modules = new Map();
+        const handlers = {
+            ImportDeclaration: handleImportsExports(
+                context,
+                modules,
+                "import",
+                includeExports
+            )
+        };
+
+        if (includeExports) {
+            handlers.ExportNamedDeclaration = handleImportsExports(
+                context,
+                modules,
+                "export",
+                includeExports
+            );
+            handlers.ExportAllDeclaration = handleImportsExports(
+                context,
+                modules,
+                "export",
+                includeExports
+            );
+        }
+        return handlers;
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-else-return.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-else-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-else-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,405 @@
+/**
+ * @fileoverview Rule to flag `else` after a `return` in `if`
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const FixTracker = require("./utils/fix-tracker");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `else` blocks after `return` statements in `if` statements",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-else-return"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                allowElseIf: {
+                    type: "boolean",
+                    default: true
+                }
+            },
+            additionalProperties: false
+        }],
+
+        fixable: "code",
+
+        messages: {
+            unexpected: "Unnecessary 'else' after 'return'."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Checks whether the given names can be safely used to declare block-scoped variables
+         * in the given scope. Name collisions can produce redeclaration syntax errors,
+         * or silently change references and modify behavior of the original code.
+         *
+         * This is not a generic function. In particular, it is assumed that the scope is a function scope or
+         * a function's inner scope, and that the names can be valid identifiers in the given scope.
+         * @param {string[]} names Array of variable names.
+         * @param {eslint-scope.Scope} scope Function scope or a function's inner scope.
+         * @returns {boolean} True if all names can be safely declared, false otherwise.
+         */
+        function isSafeToDeclare(names, scope) {
+
+            if (names.length === 0) {
+                return true;
+            }
+
+            const functionScope = scope.variableScope;
+
+            /*
+             * If this is a function scope, scope.variables will contain parameters, implicit variables such as "arguments",
+             * all function-scoped variables ('var'), and block-scoped variables defined in the scope.
+             * If this is an inner scope, scope.variables will contain block-scoped variables defined in the scope.
+             *
+             * Redeclaring any of these would cause a syntax error, except for the implicit variables.
+             */
+            const declaredVariables = scope.variables.filter(({ defs }) => defs.length > 0);
+
+            if (declaredVariables.some(({ name }) => names.includes(name))) {
+                return false;
+            }
+
+            // Redeclaring a catch variable would also cause a syntax error.
+            if (scope !== functionScope && scope.upper.type === "catch") {
+                if (scope.upper.variables.some(({ name }) => names.includes(name))) {
+                    return false;
+                }
+            }
+
+            /*
+             * Redeclaring an implicit variable, such as "arguments", would not cause a syntax error.
+             * However, if the variable was used, declaring a new one with the same name would change references
+             * and modify behavior.
+             */
+            const usedImplicitVariables = scope.variables.filter(({ defs, references }) =>
+                defs.length === 0 && references.length > 0);
+
+            if (usedImplicitVariables.some(({ name }) => names.includes(name))) {
+                return false;
+            }
+
+            /*
+             * Declaring a variable with a name that was already used to reference a variable from an upper scope
+             * would change references and modify behavior.
+             */
+            if (scope.through.some(t => names.includes(t.identifier.name))) {
+                return false;
+            }
+
+            /*
+             * If the scope is an inner scope (not the function scope), an uninitialized `var` variable declared inside
+             * the scope node (directly or in one of its descendants) is neither declared nor 'through' in the scope.
+             *
+             * For example, this would be a syntax error "Identifier 'a' has already been declared":
+             * function foo() { if (bar) { let a; if (baz) { var a; } } }
+             */
+            if (scope !== functionScope) {
+                const scopeNodeRange = scope.block.range;
+                const variablesToCheck = functionScope.variables.filter(({ name }) => names.includes(name));
+
+                if (variablesToCheck.some(v => v.defs.some(({ node: { range } }) =>
+                    scopeNodeRange[0] <= range[0] && range[1] <= scopeNodeRange[1]))) {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+
+        /**
+         * Checks whether the removal of `else` and its braces is safe from variable name collisions.
+         * @param {Node} node The 'else' node.
+         * @param {eslint-scope.Scope} scope The scope in which the node and the whole 'if' statement is.
+         * @returns {boolean} True if it is safe, false otherwise.
+         */
+        function isSafeFromNameCollisions(node, scope) {
+
+            if (node.type === "FunctionDeclaration") {
+
+                // Conditional function declaration. Scope and hoisting are unpredictable, different engines work differently.
+                return false;
+            }
+
+            if (node.type !== "BlockStatement") {
+                return true;
+            }
+
+            const elseBlockScope = scope.childScopes.find(({ block }) => block === node);
+
+            if (!elseBlockScope) {
+
+                // ecmaVersion < 6, `else` block statement cannot have its own scope, no possible collisions.
+                return true;
+            }
+
+            /*
+             * elseBlockScope is supposed to merge into its upper scope. elseBlockScope.variables array contains
+             * only block-scoped variables (such as let and const variables or class and function declarations)
+             * defined directly in the elseBlockScope. These are exactly the only names that could cause collisions.
+             */
+            const namesToCheck = elseBlockScope.variables.map(({ name }) => name);
+
+            return isSafeToDeclare(namesToCheck, scope);
+        }
+
+        /**
+         * Display the context report if rule is violated
+         * @param {Node} elseNode The 'else' node
+         * @returns {void}
+         */
+        function displayReport(elseNode) {
+            const currentScope = sourceCode.getScope(elseNode.parent);
+
+            context.report({
+                node: elseNode,
+                messageId: "unexpected",
+                fix(fixer) {
+
+                    if (!isSafeFromNameCollisions(elseNode, currentScope)) {
+                        return null;
+                    }
+
+                    const startToken = sourceCode.getFirstToken(elseNode);
+                    const elseToken = sourceCode.getTokenBefore(startToken);
+                    const source = sourceCode.getText(elseNode);
+                    const lastIfToken = sourceCode.getTokenBefore(elseToken);
+                    let fixedSource, firstTokenOfElseBlock;
+
+                    if (startToken.type === "Punctuator" && startToken.value === "{") {
+                        firstTokenOfElseBlock = sourceCode.getTokenAfter(startToken);
+                    } else {
+                        firstTokenOfElseBlock = startToken;
+                    }
+
+                    /*
+                     * If the if block does not have curly braces and does not end in a semicolon
+                     * and the else block starts with (, [, /, +, ` or -, then it is not
+                     * safe to remove the else keyword, because ASI will not add a semicolon
+                     * after the if block
+                     */
+                    const ifBlockMaybeUnsafe = elseNode.parent.consequent.type !== "BlockStatement" && lastIfToken.value !== ";";
+                    const elseBlockUnsafe = /^[([/+`-]/u.test(firstTokenOfElseBlock.value);
+
+                    if (ifBlockMaybeUnsafe && elseBlockUnsafe) {
+                        return null;
+                    }
+
+                    const endToken = sourceCode.getLastToken(elseNode);
+                    const lastTokenOfElseBlock = sourceCode.getTokenBefore(endToken);
+
+                    if (lastTokenOfElseBlock.value !== ";") {
+                        const nextToken = sourceCode.getTokenAfter(endToken);
+
+                        const nextTokenUnsafe = nextToken && /^[([/+`-]/u.test(nextToken.value);
+                        const nextTokenOnSameLine = nextToken && nextToken.loc.start.line === lastTokenOfElseBlock.loc.start.line;
+
+                        /*
+                         * If the else block contents does not end in a semicolon,
+                         * and the else block starts with (, [, /, +, ` or -, then it is not
+                         * safe to remove the else block, because ASI will not add a semicolon
+                         * after the remaining else block contents
+                         */
+                        if (nextTokenUnsafe || (nextTokenOnSameLine && nextToken.value !== "}")) {
+                            return null;
+                        }
+                    }
+
+                    if (startToken.type === "Punctuator" && startToken.value === "{") {
+                        fixedSource = source.slice(1, -1);
+                    } else {
+                        fixedSource = source;
+                    }
+
+                    /*
+                     * Extend the replacement range to include the entire
+                     * function to avoid conflicting with no-useless-return.
+                     * https://github.com/eslint/eslint/issues/8026
+                     *
+                     * Also, to avoid name collisions between two else blocks.
+                     */
+                    return new FixTracker(fixer, sourceCode)
+                        .retainEnclosingFunction(elseNode)
+                        .replaceTextRange([elseToken.range[0], elseNode.range[1]], fixedSource);
+                }
+            });
+        }
+
+        /**
+         * Check to see if the node is a ReturnStatement
+         * @param {Node} node The node being evaluated
+         * @returns {boolean} True if node is a return
+         */
+        function checkForReturn(node) {
+            return node.type === "ReturnStatement";
+        }
+
+        /**
+         * Naive return checking, does not iterate through the whole
+         * BlockStatement because we make the assumption that the ReturnStatement
+         * will be the last node in the body of the BlockStatement.
+         * @param {Node} node The consequent/alternate node
+         * @returns {boolean} True if it has a return
+         */
+        function naiveHasReturn(node) {
+            if (node.type === "BlockStatement") {
+                const body = node.body,
+                    lastChildNode = body[body.length - 1];
+
+                return lastChildNode && checkForReturn(lastChildNode);
+            }
+            return checkForReturn(node);
+        }
+
+        /**
+         * Check to see if the node is valid for evaluation,
+         * meaning it has an else.
+         * @param {Node} node The node being evaluated
+         * @returns {boolean} True if the node is valid
+         */
+        function hasElse(node) {
+            return node.alternate && node.consequent;
+        }
+
+        /**
+         * If the consequent is an IfStatement, check to see if it has an else
+         * and both its consequent and alternate path return, meaning this is
+         * a nested case of rule violation.  If-Else not considered currently.
+         * @param {Node} node The consequent node
+         * @returns {boolean} True if this is a nested rule violation
+         */
+        function checkForIf(node) {
+            return node.type === "IfStatement" && hasElse(node) &&
+                naiveHasReturn(node.alternate) && naiveHasReturn(node.consequent);
+        }
+
+        /**
+         * Check the consequent/body node to make sure it is not
+         * a ReturnStatement or an IfStatement that returns on both
+         * code paths.
+         * @param {Node} node The consequent or body node
+         * @returns {boolean} `true` if it is a Return/If node that always returns.
+         */
+        function checkForReturnOrIf(node) {
+            return checkForReturn(node) || checkForIf(node);
+        }
+
+
+        /**
+         * Check whether a node returns in every codepath.
+         * @param {Node} node The node to be checked
+         * @returns {boolean} `true` if it returns on every codepath.
+         */
+        function alwaysReturns(node) {
+            if (node.type === "BlockStatement") {
+
+                // If we have a BlockStatement, check each consequent body node.
+                return node.body.some(checkForReturnOrIf);
+            }
+
+            /*
+             * If not a block statement, make sure the consequent isn't a
+             * ReturnStatement or an IfStatement with returns on both paths.
+             */
+            return checkForReturnOrIf(node);
+        }
+
+
+        /**
+         * Check the if statement, but don't catch else-if blocks.
+         * @returns {void}
+         * @param {Node} node The node for the if statement to check
+         * @private
+         */
+        function checkIfWithoutElse(node) {
+            const parent = node.parent;
+
+            /*
+             * Fixing this would require splitting one statement into two, so no error should
+             * be reported if this node is in a position where only one statement is allowed.
+             */
+            if (!astUtils.STATEMENT_LIST_PARENTS.has(parent.type)) {
+                return;
+            }
+
+            const consequents = [];
+            let alternate;
+
+            for (let currentNode = node; currentNode.type === "IfStatement"; currentNode = currentNode.alternate) {
+                if (!currentNode.alternate) {
+                    return;
+                }
+                consequents.push(currentNode.consequent);
+                alternate = currentNode.alternate;
+            }
+
+            if (consequents.every(alwaysReturns)) {
+                displayReport(alternate);
+            }
+        }
+
+        /**
+         * Check the if statement
+         * @returns {void}
+         * @param {Node} node The node for the if statement to check
+         * @private
+         */
+        function checkIfWithElse(node) {
+            const parent = node.parent;
+
+
+            /*
+             * Fixing this would require splitting one statement into two, so no error should
+             * be reported if this node is in a position where only one statement is allowed.
+             */
+            if (!astUtils.STATEMENT_LIST_PARENTS.has(parent.type)) {
+                return;
+            }
+
+            const alternate = node.alternate;
+
+            if (alternate && alwaysReturns(node.consequent)) {
+                displayReport(alternate);
+            }
+        }
+
+        const allowElseIf = !(context.options[0] && context.options[0].allowElseIf === false);
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+
+            "IfStatement:exit": allowElseIf ? checkIfWithoutElse : checkIfWithElse
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-empty-character-class.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-empty-character-class.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-empty-character-class.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,76 @@
+/**
+ * @fileoverview Rule to flag the use of empty character classes in regular expressions
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { RegExpParser, visitRegExpAST } = require("@eslint-community/regexpp");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const parser = new RegExpParser();
+const QUICK_TEST_REGEX = /\[\]/u;
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow empty character classes in regular expressions",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-empty-character-class"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "Empty class."
+        }
+    },
+
+    create(context) {
+        return {
+            "Literal[regex]"(node) {
+                const { pattern, flags } = node.regex;
+
+                if (!QUICK_TEST_REGEX.test(pattern)) {
+                    return;
+                }
+
+                let regExpAST;
+
+                try {
+                    regExpAST = parser.parsePattern(pattern, 0, pattern.length, {
+                        unicode: flags.includes("u"),
+                        unicodeSets: flags.includes("v")
+                    });
+                } catch {
+
+                    // Ignore regular expressions that regexpp cannot parse
+                    return;
+                }
+
+                visitRegExpAST(regExpAST, {
+                    onCharacterClassEnter(characterClass) {
+                        if (!characterClass.negate && characterClass.elements.length === 0) {
+                            context.report({ node, messageId: "unexpected" });
+                        }
+                    }
+                });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-empty-function.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-empty-function.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-empty-function.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,167 @@
+/**
+ * @fileoverview Rule to disallow empty functions.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const ALLOW_OPTIONS = Object.freeze([
+    "functions",
+    "arrowFunctions",
+    "generatorFunctions",
+    "methods",
+    "generatorMethods",
+    "getters",
+    "setters",
+    "constructors",
+    "asyncFunctions",
+    "asyncMethods"
+]);
+
+/**
+ * Gets the kind of a given function node.
+ * @param {ASTNode} node A function node to get. This is one of
+ *      an ArrowFunctionExpression, a FunctionDeclaration, or a
+ *      FunctionExpression.
+ * @returns {string} The kind of the function. This is one of "functions",
+ *      "arrowFunctions", "generatorFunctions", "asyncFunctions", "methods",
+ *      "generatorMethods", "asyncMethods", "getters", "setters", and
+ *      "constructors".
+ */
+function getKind(node) {
+    const parent = node.parent;
+    let kind = "";
+
+    if (node.type === "ArrowFunctionExpression") {
+        return "arrowFunctions";
+    }
+
+    // Detects main kind.
+    if (parent.type === "Property") {
+        if (parent.kind === "get") {
+            return "getters";
+        }
+        if (parent.kind === "set") {
+            return "setters";
+        }
+        kind = parent.method ? "methods" : "functions";
+
+    } else if (parent.type === "MethodDefinition") {
+        if (parent.kind === "get") {
+            return "getters";
+        }
+        if (parent.kind === "set") {
+            return "setters";
+        }
+        if (parent.kind === "constructor") {
+            return "constructors";
+        }
+        kind = "methods";
+
+    } else {
+        kind = "functions";
+    }
+
+    // Detects prefix.
+    let prefix = "";
+
+    if (node.generator) {
+        prefix = "generator";
+    } else if (node.async) {
+        prefix = "async";
+    } else {
+        return kind;
+    }
+    return prefix + kind[0].toUpperCase() + kind.slice(1);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow empty functions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-empty-function"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allow: {
+                        type: "array",
+                        items: { enum: ALLOW_OPTIONS },
+                        uniqueItems: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpected: "Unexpected empty {{name}}."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const allowed = options.allow || [];
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Reports a given function node if the node matches the following patterns.
+         *
+         * - Not allowed by options.
+         * - The body is empty.
+         * - The body doesn't have any comments.
+         * @param {ASTNode} node A function node to report. This is one of
+         *      an ArrowFunctionExpression, a FunctionDeclaration, or a
+         *      FunctionExpression.
+         * @returns {void}
+         */
+        function reportIfEmpty(node) {
+            const kind = getKind(node);
+            const name = astUtils.getFunctionNameWithKind(node);
+            const innerComments = sourceCode.getTokens(node.body, {
+                includeComments: true,
+                filter: astUtils.isCommentToken
+            });
+
+            if (!allowed.includes(kind) &&
+                node.body.type === "BlockStatement" &&
+                node.body.body.length === 0 &&
+                innerComments.length === 0
+            ) {
+                context.report({
+                    node,
+                    loc: node.body.loc,
+                    messageId: "unexpected",
+                    data: { name }
+                });
+            }
+        }
+
+        return {
+            ArrowFunctionExpression: reportIfEmpty,
+            FunctionDeclaration: reportIfEmpty,
+            FunctionExpression: reportIfEmpty
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-empty-pattern.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-empty-pattern.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-empty-pattern.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,78 @@
+/**
+ * @fileoverview Rule to disallow an empty pattern
+ * @author Alberto Rodríguez
+ */
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow empty destructuring patterns",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-empty-pattern"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowObjectPatternsAsParameters: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpected: "Unexpected empty {{type}} pattern."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {},
+            allowObjectPatternsAsParameters = options.allowObjectPatternsAsParameters || false;
+
+        return {
+            ObjectPattern(node) {
+
+                if (node.properties.length > 0) {
+                    return;
+                }
+
+                // Allow {} and {} = {} empty object patterns as parameters when allowObjectPatternsAsParameters is true
+                if (
+                    allowObjectPatternsAsParameters &&
+                    (
+                        astUtils.isFunction(node.parent) ||
+                        (
+                            node.parent.type === "AssignmentPattern" &&
+                            astUtils.isFunction(node.parent.parent) &&
+                            node.parent.right.type === "ObjectExpression" &&
+                            node.parent.right.properties.length === 0
+                        )
+                    )
+                ) {
+                    return;
+                }
+
+                context.report({ node, messageId: "unexpected", data: { type: "object" } });
+            },
+            ArrayPattern(node) {
+                if (node.elements.length === 0) {
+                    context.report({ node, messageId: "unexpected", data: { type: "array" } });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-empty-static-block.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-empty-static-block.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-empty-static-block.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,47 @@
+/**
+ * @fileoverview Rule to disallow empty static blocks.
+ * @author Sosuke Suzuki
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow empty static blocks",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-empty-static-block"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "Unexpected empty static block."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        return {
+            StaticBlock(node) {
+                if (node.body.length === 0) {
+                    const closingBrace = sourceCode.getLastToken(node);
+
+                    if (sourceCode.getCommentsBefore(closingBrace).length === 0) {
+                        context.report({
+                            node,
+                            messageId: "unexpected"
+                        });
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-empty.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-empty.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-empty.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,103 @@
+/**
+ * @fileoverview Rule to flag use of an empty block statement
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        hasSuggestions: true,
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow empty block statements",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-empty"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowEmptyCatch: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpected: "Empty {{type}} statement.",
+            suggestComment: "Add comment inside empty {{type}} statement."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {},
+            allowEmptyCatch = options.allowEmptyCatch || false;
+
+        const sourceCode = context.sourceCode;
+
+        return {
+            BlockStatement(node) {
+
+                // if the body is not empty, we can just return immediately
+                if (node.body.length !== 0) {
+                    return;
+                }
+
+                // a function is generally allowed to be empty
+                if (astUtils.isFunction(node.parent)) {
+                    return;
+                }
+
+                if (allowEmptyCatch && node.parent.type === "CatchClause") {
+                    return;
+                }
+
+                // any other block is only allowed to be empty, if it contains a comment
+                if (sourceCode.getCommentsInside(node).length > 0) {
+                    return;
+                }
+
+                context.report({
+                    node,
+                    messageId: "unexpected",
+                    data: { type: "block" },
+                    suggest: [
+                        {
+                            messageId: "suggestComment",
+                            data: { type: "block" },
+                            fix(fixer) {
+                                const range = [node.range[0] + 1, node.range[1] - 1];
+
+                                return fixer.replaceTextRange(range, " /* empty */ ");
+                            }
+                        }
+                    ]
+                });
+            },
+
+            SwitchStatement(node) {
+
+                if (typeof node.cases === "undefined" || node.cases.length === 0) {
+                    context.report({ node, messageId: "unexpected", data: { type: "switch" } });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-eq-null.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-eq-null.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-eq-null.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,46 @@
+/**
+ * @fileoverview Rule to flag comparisons to null without a type-checking
+ * operator.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `null` comparisons without type-checking operators",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-eq-null"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "Use '===' to compare with null."
+        }
+    },
+
+    create(context) {
+
+        return {
+
+            BinaryExpression(node) {
+                const badOperator = node.operator === "==" || node.operator === "!=";
+
+                if (node.right.type === "Literal" && node.right.raw === "null" && badOperator ||
+                        node.left.type === "Literal" && node.left.raw === "null" && badOperator) {
+                    context.report({ node, messageId: "unexpected" });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-eval.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-eval.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-eval.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,286 @@
+/**
+ * @fileoverview Rule to flag use of eval() statement
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const candidatesOfGlobalObject = Object.freeze([
+    "global",
+    "window",
+    "globalThis"
+]);
+
+/**
+ * Checks a given node is a MemberExpression node which has the specified name's
+ * property.
+ * @param {ASTNode} node A node to check.
+ * @param {string} name A name to check.
+ * @returns {boolean} `true` if the node is a MemberExpression node which has
+ *      the specified name's property
+ */
+function isMember(node, name) {
+    return astUtils.isSpecificMemberAccess(node, null, name);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow the use of `eval()`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-eval"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowIndirect: { type: "boolean", default: false }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpected: "eval can be harmful."
+        }
+    },
+
+    create(context) {
+        const allowIndirect = Boolean(
+            context.options[0] &&
+            context.options[0].allowIndirect
+        );
+        const sourceCode = context.sourceCode;
+        let funcInfo = null;
+
+        /**
+         * Pushes a `this` scope (non-arrow function, class static block, or class field initializer) information to the stack.
+         * Top-level scopes are handled separately.
+         *
+         * This is used in order to check whether or not `this` binding is a
+         * reference to the global object.
+         * @param {ASTNode} node A node of the scope.
+         *      For functions, this is one of FunctionDeclaration, FunctionExpression.
+         *      For class static blocks, this is StaticBlock.
+         *      For class field initializers, this can be any node that is PropertyDefinition#value.
+         * @returns {void}
+         */
+        function enterThisScope(node) {
+            const strict = sourceCode.getScope(node).isStrict;
+
+            funcInfo = {
+                upper: funcInfo,
+                node,
+                strict,
+                isTopLevelOfScript: false,
+                defaultThis: false,
+                initialized: strict
+            };
+        }
+
+        /**
+         * Pops a variable scope from the stack.
+         * @returns {void}
+         */
+        function exitThisScope() {
+            funcInfo = funcInfo.upper;
+        }
+
+        /**
+         * Reports a given node.
+         *
+         * `node` is `Identifier` or `MemberExpression`.
+         * The parent of `node` might be `CallExpression`.
+         *
+         * The location of the report is always `eval` `Identifier` (or possibly
+         * `Literal`). The type of the report is `CallExpression` if the parent is
+         * `CallExpression`. Otherwise, it's the given node type.
+         * @param {ASTNode} node A node to report.
+         * @returns {void}
+         */
+        function report(node) {
+            const parent = node.parent;
+            const locationNode = node.type === "MemberExpression"
+                ? node.property
+                : node;
+
+            const reportNode = parent.type === "CallExpression" && parent.callee === node
+                ? parent
+                : node;
+
+            context.report({
+                node: reportNode,
+                loc: locationNode.loc,
+                messageId: "unexpected"
+            });
+        }
+
+        /**
+         * Reports accesses of `eval` via the global object.
+         * @param {eslint-scope.Scope} globalScope The global scope.
+         * @returns {void}
+         */
+        function reportAccessingEvalViaGlobalObject(globalScope) {
+            for (let i = 0; i < candidatesOfGlobalObject.length; ++i) {
+                const name = candidatesOfGlobalObject[i];
+                const variable = astUtils.getVariableByName(globalScope, name);
+
+                if (!variable) {
+                    continue;
+                }
+
+                const references = variable.references;
+
+                for (let j = 0; j < references.length; ++j) {
+                    const identifier = references[j].identifier;
+                    let node = identifier.parent;
+
+                    // To detect code like `window.window.eval`.
+                    while (isMember(node, name)) {
+                        node = node.parent;
+                    }
+
+                    // Reports.
+                    if (isMember(node, "eval")) {
+                        report(node);
+                    }
+                }
+            }
+        }
+
+        /**
+         * Reports all accesses of `eval` (excludes direct calls to eval).
+         * @param {eslint-scope.Scope} globalScope The global scope.
+         * @returns {void}
+         */
+        function reportAccessingEval(globalScope) {
+            const variable = astUtils.getVariableByName(globalScope, "eval");
+
+            if (!variable) {
+                return;
+            }
+
+            const references = variable.references;
+
+            for (let i = 0; i < references.length; ++i) {
+                const reference = references[i];
+                const id = reference.identifier;
+
+                if (id.name === "eval" && !astUtils.isCallee(id)) {
+
+                    // Is accessing to eval (excludes direct calls to eval)
+                    report(id);
+                }
+            }
+        }
+
+        if (allowIndirect) {
+
+            // Checks only direct calls to eval. It's simple!
+            return {
+                "CallExpression:exit"(node) {
+                    const callee = node.callee;
+
+                    /*
+                     * Optional call (`eval?.("code")`) is not direct eval.
+                     * The direct eval is only step 6.a.vi of https://tc39.es/ecma262/#sec-function-calls-runtime-semantics-evaluation
+                     * But the optional call is https://tc39.es/ecma262/#sec-optional-chaining-chain-evaluation
+                     */
+                    if (!node.optional && astUtils.isSpecificId(callee, "eval")) {
+                        report(callee);
+                    }
+                }
+            };
+        }
+
+        return {
+            "CallExpression:exit"(node) {
+                const callee = node.callee;
+
+                if (astUtils.isSpecificId(callee, "eval")) {
+                    report(callee);
+                }
+            },
+
+            Program(node) {
+                const scope = sourceCode.getScope(node),
+                    features = context.parserOptions.ecmaFeatures || {},
+                    strict =
+                        scope.isStrict ||
+                        node.sourceType === "module" ||
+                        (features.globalReturn && scope.childScopes[0].isStrict),
+                    isTopLevelOfScript = node.sourceType !== "module" && !features.globalReturn;
+
+                funcInfo = {
+                    upper: null,
+                    node,
+                    strict,
+                    isTopLevelOfScript,
+                    defaultThis: true,
+                    initialized: true
+                };
+            },
+
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
+
+                exitThisScope();
+                reportAccessingEval(globalScope);
+                reportAccessingEvalViaGlobalObject(globalScope);
+            },
+
+            FunctionDeclaration: enterThisScope,
+            "FunctionDeclaration:exit": exitThisScope,
+            FunctionExpression: enterThisScope,
+            "FunctionExpression:exit": exitThisScope,
+            "PropertyDefinition > *.value": enterThisScope,
+            "PropertyDefinition > *.value:exit": exitThisScope,
+            StaticBlock: enterThisScope,
+            "StaticBlock:exit": exitThisScope,
+
+            ThisExpression(node) {
+                if (!isMember(node.parent, "eval")) {
+                    return;
+                }
+
+                /*
+                 * `this.eval` is found.
+                 * Checks whether or not the value of `this` is the global object.
+                 */
+                if (!funcInfo.initialized) {
+                    funcInfo.initialized = true;
+                    funcInfo.defaultThis = astUtils.isDefaultThisBinding(
+                        funcInfo.node,
+                        sourceCode
+                    );
+                }
+
+                // `this` at the top level of scripts always refers to the global object
+                if (funcInfo.isTopLevelOfScript || (!funcInfo.strict && funcInfo.defaultThis)) {
+
+                    // `this.eval` is possible built-in `eval`.
+                    report(node.parent);
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-ex-assign.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-ex-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-ex-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,54 @@
+/**
+ * @fileoverview Rule to flag assignment of the exception parameter
+ * @author Stephen Murray <spmurrayzzz>
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow reassigning exceptions in `catch` clauses",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-ex-assign"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpected: "Do not assign to the exception parameter."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Finds and reports references that are non initializer and writable.
+         * @param {Variable} variable A variable to check.
+         * @returns {void}
+         */
+        function checkVariable(variable) {
+            astUtils.getModifyingReferences(variable.references).forEach(reference => {
+                context.report({ node: reference.identifier, messageId: "unexpected" });
+            });
+        }
+
+        return {
+            CatchClause(node) {
+                sourceCode.getDeclaredVariables(node).forEach(checkVariable);
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-extend-native.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-extend-native.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-extend-native.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,179 @@
+/**
+ * @fileoverview Rule to flag adding properties to native object's prototypes.
+ * @author David Nelson
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const globals = require("globals");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow extending native types",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-extend-native"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    exceptions: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        },
+                        uniqueItems: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpected: "{{builtin}} prototype is read only, properties should not be added."
+        }
+    },
+
+    create(context) {
+
+        const config = context.options[0] || {};
+        const sourceCode = context.sourceCode;
+        const exceptions = new Set(config.exceptions || []);
+        const modifiedBuiltins = new Set(
+            Object.keys(globals.builtin)
+                .filter(builtin => builtin[0].toUpperCase() === builtin[0])
+                .filter(builtin => !exceptions.has(builtin))
+        );
+
+        /**
+         * Reports a lint error for the given node.
+         * @param {ASTNode} node The node to report.
+         * @param {string} builtin The name of the native builtin being extended.
+         * @returns {void}
+         */
+        function reportNode(node, builtin) {
+            context.report({
+                node,
+                messageId: "unexpected",
+                data: {
+                    builtin
+                }
+            });
+        }
+
+        /**
+         * Check to see if the `prototype` property of the given object
+         * identifier node is being accessed.
+         * @param {ASTNode} identifierNode The Identifier representing the object
+         * to check.
+         * @returns {boolean} True if the identifier is the object of a
+         * MemberExpression and its `prototype` property is being accessed,
+         * false otherwise.
+         */
+        function isPrototypePropertyAccessed(identifierNode) {
+            return Boolean(
+                identifierNode &&
+                identifierNode.parent &&
+                identifierNode.parent.type === "MemberExpression" &&
+                identifierNode.parent.object === identifierNode &&
+                astUtils.getStaticPropertyName(identifierNode.parent) === "prototype"
+            );
+        }
+
+        /**
+         * Check if it's an assignment to the property of the given node.
+         * Example: `*.prop = 0` // the `*` is the given node.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} True if an assignment to the property of the node.
+         */
+        function isAssigningToPropertyOf(node) {
+            return (
+                node.parent.type === "MemberExpression" &&
+                node.parent.object === node &&
+                node.parent.parent.type === "AssignmentExpression" &&
+                node.parent.parent.left === node.parent
+            );
+        }
+
+        /**
+         * Checks if the given node is at the first argument of the method call of `Object.defineProperty()` or `Object.defineProperties()`.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} True if the node is at the first argument of the method call of `Object.defineProperty()` or `Object.defineProperties()`.
+         */
+        function isInDefinePropertyCall(node) {
+            return (
+                node.parent.type === "CallExpression" &&
+                node.parent.arguments[0] === node &&
+                astUtils.isSpecificMemberAccess(node.parent.callee, "Object", /^definePropert(?:y|ies)$/u)
+            );
+        }
+
+        /**
+         * Check to see if object prototype access is part of a prototype
+         * extension. There are three ways a prototype can be extended:
+         * 1. Assignment to prototype property (Object.prototype.foo = 1)
+         * 2. Object.defineProperty()/Object.defineProperties() on a prototype
+         * If prototype extension is detected, report the AssignmentExpression
+         * or CallExpression node.
+         * @param {ASTNode} identifierNode The Identifier representing the object
+         * which prototype is being accessed and possibly extended.
+         * @returns {void}
+         */
+        function checkAndReportPrototypeExtension(identifierNode) {
+            if (!isPrototypePropertyAccessed(identifierNode)) {
+                return; // This is not `*.prototype` access.
+            }
+
+            /*
+             * `identifierNode.parent` is a MemberExpression `*.prototype`.
+             * If it's an optional member access, it may be wrapped by a `ChainExpression` node.
+             */
+            const prototypeNode =
+                identifierNode.parent.parent.type === "ChainExpression"
+                    ? identifierNode.parent.parent
+                    : identifierNode.parent;
+
+            if (isAssigningToPropertyOf(prototypeNode)) {
+
+                // `*.prototype` -> MemberExpression -> AssignmentExpression
+                reportNode(prototypeNode.parent.parent, identifierNode.name);
+            } else if (isInDefinePropertyCall(prototypeNode)) {
+
+                // `*.prototype` -> CallExpression
+                reportNode(prototypeNode.parent, identifierNode.name);
+            }
+        }
+
+        return {
+
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
+
+                modifiedBuiltins.forEach(builtin => {
+                    const builtinVar = globalScope.set.get(builtin);
+
+                    if (builtinVar && builtinVar.references) {
+                        builtinVar.references
+                            .map(ref => ref.identifier)
+                            .forEach(checkAndReportPrototypeExtension);
+                    }
+                });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-extra-bind.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-extra-bind.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-extra-bind.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,213 @@
+/**
+ * @fileoverview Rule to flag unnecessary bind calls
+ * @author Bence Dányi <bence@danyi.me>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const SIDE_EFFECT_FREE_NODE_TYPES = new Set(["Literal", "Identifier", "ThisExpression", "FunctionExpression"]);
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow unnecessary calls to `.bind()`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-extra-bind"
+        },
+
+        schema: [],
+        fixable: "code",
+
+        messages: {
+            unexpected: "The function binding is unnecessary."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        let scopeInfo = null;
+
+        /**
+         * Checks if a node is free of side effects.
+         *
+         * This check is stricter than it needs to be, in order to keep the implementation simple.
+         * @param {ASTNode} node A node to check.
+         * @returns {boolean} True if the node is known to be side-effect free, false otherwise.
+         */
+        function isSideEffectFree(node) {
+            return SIDE_EFFECT_FREE_NODE_TYPES.has(node.type);
+        }
+
+        /**
+         * Reports a given function node.
+         * @param {ASTNode} node A node to report. This is a FunctionExpression or
+         *      an ArrowFunctionExpression.
+         * @returns {void}
+         */
+        function report(node) {
+            const memberNode = node.parent;
+            const callNode = memberNode.parent.type === "ChainExpression"
+                ? memberNode.parent.parent
+                : memberNode.parent;
+
+            context.report({
+                node: callNode,
+                messageId: "unexpected",
+                loc: memberNode.property.loc,
+
+                fix(fixer) {
+                    if (!isSideEffectFree(callNode.arguments[0])) {
+                        return null;
+                    }
+
+                    /*
+                     * The list of the first/last token pair of a removal range.
+                     * This is two parts because closing parentheses may exist between the method name and arguments.
+                     * E.g. `(function(){}.bind ) (obj)`
+                     *                    ^^^^^   ^^^^^ < removal ranges
+                     * E.g. `(function(){}?.['bind'] ) ?.(obj)`
+                     *                    ^^^^^^^^^^   ^^^^^^^ < removal ranges
+                     */
+                    const tokenPairs = [
+                        [
+
+                            // `.`, `?.`, or `[` token.
+                            sourceCode.getTokenAfter(
+                                memberNode.object,
+                                astUtils.isNotClosingParenToken
+                            ),
+
+                            // property name or `]` token.
+                            sourceCode.getLastToken(memberNode)
+                        ],
+                        [
+
+                            // `?.` or `(` token of arguments.
+                            sourceCode.getTokenAfter(
+                                memberNode,
+                                astUtils.isNotClosingParenToken
+                            ),
+
+                            // `)` token of arguments.
+                            sourceCode.getLastToken(callNode)
+                        ]
+                    ];
+                    const firstTokenToRemove = tokenPairs[0][0];
+                    const lastTokenToRemove = tokenPairs[1][1];
+
+                    if (sourceCode.commentsExistBetween(firstTokenToRemove, lastTokenToRemove)) {
+                        return null;
+                    }
+
+                    return tokenPairs.map(([start, end]) =>
+                        fixer.removeRange([start.range[0], end.range[1]]));
+                }
+            });
+        }
+
+        /**
+         * Checks whether or not a given function node is the callee of `.bind()`
+         * method.
+         *
+         * e.g. `(function() {}.bind(foo))`
+         * @param {ASTNode} node A node to report. This is a FunctionExpression or
+         *      an ArrowFunctionExpression.
+         * @returns {boolean} `true` if the node is the callee of `.bind()` method.
+         */
+        function isCalleeOfBindMethod(node) {
+            if (!astUtils.isSpecificMemberAccess(node.parent, null, "bind")) {
+                return false;
+            }
+
+            // The node of `*.bind` member access.
+            const bindNode = node.parent.parent.type === "ChainExpression"
+                ? node.parent.parent
+                : node.parent;
+
+            return (
+                bindNode.parent.type === "CallExpression" &&
+                bindNode.parent.callee === bindNode &&
+                bindNode.parent.arguments.length === 1 &&
+                bindNode.parent.arguments[0].type !== "SpreadElement"
+            );
+        }
+
+        /**
+         * Adds a scope information object to the stack.
+         * @param {ASTNode} node A node to add. This node is a FunctionExpression
+         *      or a FunctionDeclaration node.
+         * @returns {void}
+         */
+        function enterFunction(node) {
+            scopeInfo = {
+                isBound: isCalleeOfBindMethod(node),
+                thisFound: false,
+                upper: scopeInfo
+            };
+        }
+
+        /**
+         * Removes the scope information object from the top of the stack.
+         * At the same time, this reports the function node if the function has
+         * `.bind()` and the `this` keywords found.
+         * @param {ASTNode} node A node to remove. This node is a
+         *      FunctionExpression or a FunctionDeclaration node.
+         * @returns {void}
+         */
+        function exitFunction(node) {
+            if (scopeInfo.isBound && !scopeInfo.thisFound) {
+                report(node);
+            }
+
+            scopeInfo = scopeInfo.upper;
+        }
+
+        /**
+         * Reports a given arrow function if the function is callee of `.bind()`
+         * method.
+         * @param {ASTNode} node A node to report. This node is an
+         *      ArrowFunctionExpression.
+         * @returns {void}
+         */
+        function exitArrowFunction(node) {
+            if (isCalleeOfBindMethod(node)) {
+                report(node);
+            }
+        }
+
+        /**
+         * Set the mark as the `this` keyword was found in this scope.
+         * @returns {void}
+         */
+        function markAsThisFound() {
+            if (scopeInfo) {
+                scopeInfo.thisFound = true;
+            }
+        }
+
+        return {
+            "ArrowFunctionExpression:exit": exitArrowFunction,
+            FunctionDeclaration: enterFunction,
+            "FunctionDeclaration:exit": exitFunction,
+            FunctionExpression: enterFunction,
+            "FunctionExpression:exit": exitFunction,
+            ThisExpression: markAsThisFound
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-extra-boolean-cast.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-extra-boolean-cast.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-extra-boolean-cast.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,317 @@
+/**
+ * @fileoverview Rule to flag unnecessary double negation in Boolean contexts
+ * @author Brandon Mills
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const eslintUtils = require("@eslint-community/eslint-utils");
+
+const precedence = astUtils.getPrecedence;
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow unnecessary boolean casts",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-extra-boolean-cast"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                enforceForLogicalOperands: {
+                    type: "boolean",
+                    default: false
+                }
+            },
+            additionalProperties: false
+        }],
+        fixable: "code",
+
+        messages: {
+            unexpectedCall: "Redundant Boolean call.",
+            unexpectedNegation: "Redundant double negation."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        // Node types which have a test which will coerce values to booleans.
+        const BOOLEAN_NODE_TYPES = new Set([
+            "IfStatement",
+            "DoWhileStatement",
+            "WhileStatement",
+            "ConditionalExpression",
+            "ForStatement"
+        ]);
+
+        /**
+         * Check if a node is a Boolean function or constructor.
+         * @param {ASTNode} node the node
+         * @returns {boolean} If the node is Boolean function or constructor
+         */
+        function isBooleanFunctionOrConstructorCall(node) {
+
+            // Boolean(<bool>) and new Boolean(<bool>)
+            return (node.type === "CallExpression" || node.type === "NewExpression") &&
+                    node.callee.type === "Identifier" &&
+                        node.callee.name === "Boolean";
+        }
+
+        /**
+         * Checks whether the node is a logical expression and that the option is enabled
+         * @param {ASTNode} node the node
+         * @returns {boolean} if the node is a logical expression and option is enabled
+         */
+        function isLogicalContext(node) {
+            return node.type === "LogicalExpression" &&
+            (node.operator === "||" || node.operator === "&&") &&
+            (context.options.length && context.options[0].enforceForLogicalOperands === true);
+
+        }
+
+
+        /**
+         * Check if a node is in a context where its value would be coerced to a boolean at runtime.
+         * @param {ASTNode} node The node
+         * @returns {boolean} If it is in a boolean context
+         */
+        function isInBooleanContext(node) {
+            return (
+                (isBooleanFunctionOrConstructorCall(node.parent) &&
+                node === node.parent.arguments[0]) ||
+
+                (BOOLEAN_NODE_TYPES.has(node.parent.type) &&
+                    node === node.parent.test) ||
+
+                // !<bool>
+                (node.parent.type === "UnaryExpression" &&
+                    node.parent.operator === "!")
+            );
+        }
+
+        /**
+         * Checks whether the node is a context that should report an error
+         * Acts recursively if it is in a logical context
+         * @param {ASTNode} node the node
+         * @returns {boolean} If the node is in one of the flagged contexts
+         */
+        function isInFlaggedContext(node) {
+            if (node.parent.type === "ChainExpression") {
+                return isInFlaggedContext(node.parent);
+            }
+
+            return isInBooleanContext(node) ||
+            (isLogicalContext(node.parent) &&
+
+            // For nested logical statements
+            isInFlaggedContext(node.parent)
+            );
+        }
+
+
+        /**
+         * Check if a node has comments inside.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} `true` if it has comments inside.
+         */
+        function hasCommentsInside(node) {
+            return Boolean(sourceCode.getCommentsInside(node).length);
+        }
+
+        /**
+         * Checks if the given node is wrapped in grouping parentheses. Parentheses for constructs such as if() don't count.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} `true` if the node is parenthesized.
+         * @private
+         */
+        function isParenthesized(node) {
+            return eslintUtils.isParenthesized(1, node, sourceCode);
+        }
+
+        /**
+         * Determines whether the given node needs to be parenthesized when replacing the previous node.
+         * It assumes that `previousNode` is the node to be reported by this rule, so it has a limited list
+         * of possible parent node types. By the same assumption, the node's role in a particular parent is already known.
+         * For example, if the parent is `ConditionalExpression`, `previousNode` must be its `test` child.
+         * @param {ASTNode} previousNode Previous node.
+         * @param {ASTNode} node The node to check.
+         * @throws {Error} (Unreachable.)
+         * @returns {boolean} `true` if the node needs to be parenthesized.
+         */
+        function needsParens(previousNode, node) {
+            if (previousNode.parent.type === "ChainExpression") {
+                return needsParens(previousNode.parent, node);
+            }
+            if (isParenthesized(previousNode)) {
+
+                // parentheses around the previous node will stay, so there is no need for an additional pair
+                return false;
+            }
+
+            // parent of the previous node will become parent of the replacement node
+            const parent = previousNode.parent;
+
+            switch (parent.type) {
+                case "CallExpression":
+                case "NewExpression":
+                    return node.type === "SequenceExpression";
+                case "IfStatement":
+                case "DoWhileStatement":
+                case "WhileStatement":
+                case "ForStatement":
+                    return false;
+                case "ConditionalExpression":
+                    return precedence(node) <= precedence(parent);
+                case "UnaryExpression":
+                    return precedence(node) < precedence(parent);
+                case "LogicalExpression":
+                    if (astUtils.isMixedLogicalAndCoalesceExpressions(node, parent)) {
+                        return true;
+                    }
+                    if (previousNode === parent.left) {
+                        return precedence(node) < precedence(parent);
+                    }
+                    return precedence(node) <= precedence(parent);
+
+                /* c8 ignore next */
+                default:
+                    throw new Error(`Unexpected parent type: ${parent.type}`);
+            }
+        }
+
+        return {
+            UnaryExpression(node) {
+                const parent = node.parent;
+
+
+                // Exit early if it's guaranteed not to match
+                if (node.operator !== "!" ||
+                          parent.type !== "UnaryExpression" ||
+                          parent.operator !== "!") {
+                    return;
+                }
+
+
+                if (isInFlaggedContext(parent)) {
+                    context.report({
+                        node: parent,
+                        messageId: "unexpectedNegation",
+                        fix(fixer) {
+                            if (hasCommentsInside(parent)) {
+                                return null;
+                            }
+
+                            if (needsParens(parent, node.argument)) {
+                                return fixer.replaceText(parent, `(${sourceCode.getText(node.argument)})`);
+                            }
+
+                            let prefix = "";
+                            const tokenBefore = sourceCode.getTokenBefore(parent);
+                            const firstReplacementToken = sourceCode.getFirstToken(node.argument);
+
+                            if (
+                                tokenBefore &&
+                                tokenBefore.range[1] === parent.range[0] &&
+                                !astUtils.canTokensBeAdjacent(tokenBefore, firstReplacementToken)
+                            ) {
+                                prefix = " ";
+                            }
+
+                            return fixer.replaceText(parent, prefix + sourceCode.getText(node.argument));
+                        }
+                    });
+                }
+            },
+
+            CallExpression(node) {
+                if (node.callee.type !== "Identifier" || node.callee.name !== "Boolean") {
+                    return;
+                }
+
+                if (isInFlaggedContext(node)) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedCall",
+                        fix(fixer) {
+                            const parent = node.parent;
+
+                            if (node.arguments.length === 0) {
+                                if (parent.type === "UnaryExpression" && parent.operator === "!") {
+
+                                    /*
+                                     * !Boolean() -> true
+                                     */
+
+                                    if (hasCommentsInside(parent)) {
+                                        return null;
+                                    }
+
+                                    const replacement = "true";
+                                    let prefix = "";
+                                    const tokenBefore = sourceCode.getTokenBefore(parent);
+
+                                    if (
+                                        tokenBefore &&
+                                        tokenBefore.range[1] === parent.range[0] &&
+                                        !astUtils.canTokensBeAdjacent(tokenBefore, replacement)
+                                    ) {
+                                        prefix = " ";
+                                    }
+
+                                    return fixer.replaceText(parent, prefix + replacement);
+                                }
+
+                                /*
+                                 * Boolean() -> false
+                                 */
+
+                                if (hasCommentsInside(node)) {
+                                    return null;
+                                }
+
+                                return fixer.replaceText(node, "false");
+                            }
+
+                            if (node.arguments.length === 1) {
+                                const argument = node.arguments[0];
+
+                                if (argument.type === "SpreadElement" || hasCommentsInside(node)) {
+                                    return null;
+                                }
+
+                                /*
+                                 * Boolean(expression) -> expression
+                                 */
+
+                                if (needsParens(node, argument)) {
+                                    return fixer.replaceText(node, `(${sourceCode.getText(argument)})`);
+                                }
+
+                                return fixer.replaceText(node, sourceCode.getText(argument));
+                            }
+
+                            // two or more arguments
+                            return null;
+                        }
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-extra-label.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-extra-label.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-extra-label.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,149 @@
+/**
+ * @fileoverview Rule to disallow unnecessary labels
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow unnecessary labels",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-extra-label"
+        },
+
+        schema: [],
+        fixable: "code",
+
+        messages: {
+            unexpected: "This label '{{name}}' is unnecessary."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        let scopeInfo = null;
+
+        /**
+         * Creates a new scope with a breakable statement.
+         * @param {ASTNode} node A node to create. This is a BreakableStatement.
+         * @returns {void}
+         */
+        function enterBreakableStatement(node) {
+            scopeInfo = {
+                label: node.parent.type === "LabeledStatement" ? node.parent.label : null,
+                breakable: true,
+                upper: scopeInfo
+            };
+        }
+
+        /**
+         * Removes the top scope of the stack.
+         * @returns {void}
+         */
+        function exitBreakableStatement() {
+            scopeInfo = scopeInfo.upper;
+        }
+
+        /**
+         * Creates a new scope with a labeled statement.
+         *
+         * This ignores it if the body is a breakable statement.
+         * In this case it's handled in the `enterBreakableStatement` function.
+         * @param {ASTNode} node A node to create. This is a LabeledStatement.
+         * @returns {void}
+         */
+        function enterLabeledStatement(node) {
+            if (!astUtils.isBreakableStatement(node.body)) {
+                scopeInfo = {
+                    label: node.label,
+                    breakable: false,
+                    upper: scopeInfo
+                };
+            }
+        }
+
+        /**
+         * Removes the top scope of the stack.
+         *
+         * This ignores it if the body is a breakable statement.
+         * In this case it's handled in the `exitBreakableStatement` function.
+         * @param {ASTNode} node A node. This is a LabeledStatement.
+         * @returns {void}
+         */
+        function exitLabeledStatement(node) {
+            if (!astUtils.isBreakableStatement(node.body)) {
+                scopeInfo = scopeInfo.upper;
+            }
+        }
+
+        /**
+         * Reports a given control node if it's unnecessary.
+         * @param {ASTNode} node A node. This is a BreakStatement or a
+         *      ContinueStatement.
+         * @returns {void}
+         */
+        function reportIfUnnecessary(node) {
+            if (!node.label) {
+                return;
+            }
+
+            const labelNode = node.label;
+
+            for (let info = scopeInfo; info !== null; info = info.upper) {
+                if (info.breakable || info.label && info.label.name === labelNode.name) {
+                    if (info.breakable && info.label && info.label.name === labelNode.name) {
+                        context.report({
+                            node: labelNode,
+                            messageId: "unexpected",
+                            data: labelNode,
+                            fix(fixer) {
+                                const breakOrContinueToken = sourceCode.getFirstToken(node);
+
+                                if (sourceCode.commentsExistBetween(breakOrContinueToken, labelNode)) {
+                                    return null;
+                                }
+
+                                return fixer.removeRange([breakOrContinueToken.range[1], labelNode.range[1]]);
+                            }
+                        });
+                    }
+                    return;
+                }
+            }
+        }
+
+        return {
+            WhileStatement: enterBreakableStatement,
+            "WhileStatement:exit": exitBreakableStatement,
+            DoWhileStatement: enterBreakableStatement,
+            "DoWhileStatement:exit": exitBreakableStatement,
+            ForStatement: enterBreakableStatement,
+            "ForStatement:exit": exitBreakableStatement,
+            ForInStatement: enterBreakableStatement,
+            "ForInStatement:exit": exitBreakableStatement,
+            ForOfStatement: enterBreakableStatement,
+            "ForOfStatement:exit": exitBreakableStatement,
+            SwitchStatement: enterBreakableStatement,
+            "SwitchStatement:exit": exitBreakableStatement,
+            LabeledStatement: enterLabeledStatement,
+            "LabeledStatement:exit": exitLabeledStatement,
+            BreakStatement: reportIfUnnecessary,
+            ContinueStatement: reportIfUnnecessary
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-extra-parens.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-extra-parens.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-extra-parens.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,1322 @@
+/**
+ * @fileoverview Disallow parenthesising higher precedence subexpressions.
+ * @author Michael Ficarra
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const { isParenthesized: isParenthesizedRaw } = require("@eslint-community/eslint-utils");
+const astUtils = require("./utils/ast-utils.js");
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Disallow unnecessary parentheses",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-extra-parens"
+        },
+
+        fixable: "code",
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["functions"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["all"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                conditionalAssign: { type: "boolean" },
+                                ternaryOperandBinaryExpressions: { type: "boolean" },
+                                nestedBinaryExpressions: { type: "boolean" },
+                                returnAssign: { type: "boolean" },
+                                ignoreJSX: { enum: ["none", "all", "single-line", "multi-line"] },
+                                enforceForArrowConditionals: { type: "boolean" },
+                                enforceForSequenceExpressions: { type: "boolean" },
+                                enforceForNewInMemberExpressions: { type: "boolean" },
+                                enforceForFunctionPrototypeMethods: { type: "boolean" },
+                                allowParensAfterCommentPattern: { type: "string" }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        },
+
+        messages: {
+            unexpected: "Unnecessary parentheses around expression."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        const tokensToIgnore = new WeakSet();
+        const precedence = astUtils.getPrecedence;
+        const ALL_NODES = context.options[0] !== "functions";
+        const EXCEPT_COND_ASSIGN = ALL_NODES && context.options[1] && context.options[1].conditionalAssign === false;
+        const EXCEPT_COND_TERNARY = ALL_NODES && context.options[1] && context.options[1].ternaryOperandBinaryExpressions === false;
+        const NESTED_BINARY = ALL_NODES && context.options[1] && context.options[1].nestedBinaryExpressions === false;
+        const EXCEPT_RETURN_ASSIGN = ALL_NODES && context.options[1] && context.options[1].returnAssign === false;
+        const IGNORE_JSX = ALL_NODES && context.options[1] && context.options[1].ignoreJSX;
+        const IGNORE_ARROW_CONDITIONALS = ALL_NODES && context.options[1] &&
+            context.options[1].enforceForArrowConditionals === false;
+        const IGNORE_SEQUENCE_EXPRESSIONS = ALL_NODES && context.options[1] &&
+            context.options[1].enforceForSequenceExpressions === false;
+        const IGNORE_NEW_IN_MEMBER_EXPR = ALL_NODES && context.options[1] &&
+            context.options[1].enforceForNewInMemberExpressions === false;
+        const IGNORE_FUNCTION_PROTOTYPE_METHODS = ALL_NODES && context.options[1] &&
+            context.options[1].enforceForFunctionPrototypeMethods === false;
+        const ALLOW_PARENS_AFTER_COMMENT_PATTERN = ALL_NODES && context.options[1] && context.options[1].allowParensAfterCommentPattern;
+
+        const PRECEDENCE_OF_ASSIGNMENT_EXPR = precedence({ type: "AssignmentExpression" });
+        const PRECEDENCE_OF_UPDATE_EXPR = precedence({ type: "UpdateExpression" });
+
+        let reportsBuffer;
+
+        /**
+         * Determines whether the given node is a `call` or `apply` method call, invoked directly on a `FunctionExpression` node.
+         * Example: function(){}.call()
+         * @param {ASTNode} node The node to be checked.
+         * @returns {boolean} True if the node is an immediate `call` or `apply` method call.
+         * @private
+         */
+        function isImmediateFunctionPrototypeMethodCall(node) {
+            const callNode = astUtils.skipChainExpression(node);
+
+            if (callNode.type !== "CallExpression") {
+                return false;
+            }
+            const callee = astUtils.skipChainExpression(callNode.callee);
+
+            return (
+                callee.type === "MemberExpression" &&
+                callee.object.type === "FunctionExpression" &&
+                ["call", "apply"].includes(astUtils.getStaticPropertyName(callee))
+            );
+        }
+
+        /**
+         * Determines if this rule should be enforced for a node given the current configuration.
+         * @param {ASTNode} node The node to be checked.
+         * @returns {boolean} True if the rule should be enforced for this node.
+         * @private
+         */
+        function ruleApplies(node) {
+            if (node.type === "JSXElement" || node.type === "JSXFragment") {
+                const isSingleLine = node.loc.start.line === node.loc.end.line;
+
+                switch (IGNORE_JSX) {
+
+                    // Exclude this JSX element from linting
+                    case "all":
+                        return false;
+
+                    // Exclude this JSX element if it is multi-line element
+                    case "multi-line":
+                        return isSingleLine;
+
+                    // Exclude this JSX element if it is single-line element
+                    case "single-line":
+                        return !isSingleLine;
+
+                    // Nothing special to be done for JSX elements
+                    case "none":
+                        break;
+
+                    // no default
+                }
+            }
+
+            if (node.type === "SequenceExpression" && IGNORE_SEQUENCE_EXPRESSIONS) {
+                return false;
+            }
+
+            if (isImmediateFunctionPrototypeMethodCall(node) && IGNORE_FUNCTION_PROTOTYPE_METHODS) {
+                return false;
+            }
+
+            return ALL_NODES || node.type === "FunctionExpression" || node.type === "ArrowFunctionExpression";
+        }
+
+        /**
+         * Determines if a node is surrounded by parentheses.
+         * @param {ASTNode} node The node to be checked.
+         * @returns {boolean} True if the node is parenthesised.
+         * @private
+         */
+        function isParenthesised(node) {
+            return isParenthesizedRaw(1, node, sourceCode);
+        }
+
+        /**
+         * Determines if a node is surrounded by parentheses twice.
+         * @param {ASTNode} node The node to be checked.
+         * @returns {boolean} True if the node is doubly parenthesised.
+         * @private
+         */
+        function isParenthesisedTwice(node) {
+            return isParenthesizedRaw(2, node, sourceCode);
+        }
+
+        /**
+         * Determines if a node is surrounded by (potentially) invalid parentheses.
+         * @param {ASTNode} node The node to be checked.
+         * @returns {boolean} True if the node is incorrectly parenthesised.
+         * @private
+         */
+        function hasExcessParens(node) {
+            return ruleApplies(node) && isParenthesised(node);
+        }
+
+        /**
+         * Determines if a node that is expected to be parenthesised is surrounded by
+         * (potentially) invalid extra parentheses.
+         * @param {ASTNode} node The node to be checked.
+         * @returns {boolean} True if the node is has an unexpected extra pair of parentheses.
+         * @private
+         */
+        function hasDoubleExcessParens(node) {
+            return ruleApplies(node) && isParenthesisedTwice(node);
+        }
+
+        /**
+         * Determines if a node that is expected to be parenthesised is surrounded by
+         * (potentially) invalid extra parentheses with considering precedence level of the node.
+         * If the preference level of the node is not higher or equal to precedence lower limit, it also checks
+         * whether the node is surrounded by parentheses twice or not.
+         * @param {ASTNode} node The node to be checked.
+         * @param {number} precedenceLowerLimit The lower limit of precedence.
+         * @returns {boolean} True if the node is has an unexpected extra pair of parentheses.
+         * @private
+         */
+        function hasExcessParensWithPrecedence(node, precedenceLowerLimit) {
+            if (ruleApplies(node) && isParenthesised(node)) {
+                if (
+                    precedence(node) >= precedenceLowerLimit ||
+                    isParenthesisedTwice(node)
+                ) {
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        /**
+         * Determines if a node test expression is allowed to have a parenthesised assignment
+         * @param {ASTNode} node The node to be checked.
+         * @returns {boolean} True if the assignment can be parenthesised.
+         * @private
+         */
+        function isCondAssignException(node) {
+            return EXCEPT_COND_ASSIGN && node.test.type === "AssignmentExpression";
+        }
+
+        /**
+         * Determines if a node is in a return statement
+         * @param {ASTNode} node The node to be checked.
+         * @returns {boolean} True if the node is in a return statement.
+         * @private
+         */
+        function isInReturnStatement(node) {
+            for (let currentNode = node; currentNode; currentNode = currentNode.parent) {
+                if (
+                    currentNode.type === "ReturnStatement" ||
+                    (currentNode.type === "ArrowFunctionExpression" && currentNode.body.type !== "BlockStatement")
+                ) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        /**
+         * Determines if a constructor function is newed-up with parens
+         * @param {ASTNode} newExpression The NewExpression node to be checked.
+         * @returns {boolean} True if the constructor is called with parens.
+         * @private
+         */
+        function isNewExpressionWithParens(newExpression) {
+            const lastToken = sourceCode.getLastToken(newExpression);
+            const penultimateToken = sourceCode.getTokenBefore(lastToken);
+
+            return newExpression.arguments.length > 0 ||
+                (
+
+                    // The expression should end with its own parens, e.g., new new foo() is not a new expression with parens
+                    astUtils.isOpeningParenToken(penultimateToken) &&
+                    astUtils.isClosingParenToken(lastToken) &&
+                    newExpression.callee.range[1] < newExpression.range[1]
+                );
+        }
+
+        /**
+         * Determines if a node is or contains an assignment expression
+         * @param {ASTNode} node The node to be checked.
+         * @returns {boolean} True if the node is or contains an assignment expression.
+         * @private
+         */
+        function containsAssignment(node) {
+            if (node.type === "AssignmentExpression") {
+                return true;
+            }
+            if (node.type === "ConditionalExpression" &&
+                    (node.consequent.type === "AssignmentExpression" || node.alternate.type === "AssignmentExpression")) {
+                return true;
+            }
+            if ((node.left && node.left.type === "AssignmentExpression") ||
+                    (node.right && node.right.type === "AssignmentExpression")) {
+                return true;
+            }
+
+            return false;
+        }
+
+        /**
+         * Determines if a node is contained by or is itself a return statement and is allowed to have a parenthesised assignment
+         * @param {ASTNode} node The node to be checked.
+         * @returns {boolean} True if the assignment can be parenthesised.
+         * @private
+         */
+        function isReturnAssignException(node) {
+            if (!EXCEPT_RETURN_ASSIGN || !isInReturnStatement(node)) {
+                return false;
+            }
+
+            if (node.type === "ReturnStatement") {
+                return node.argument && containsAssignment(node.argument);
+            }
+            if (node.type === "ArrowFunctionExpression" && node.body.type !== "BlockStatement") {
+                return containsAssignment(node.body);
+            }
+            return containsAssignment(node);
+
+        }
+
+        /**
+         * Determines if a node following a [no LineTerminator here] restriction is
+         * surrounded by (potentially) invalid extra parentheses.
+         * @param {Token} token The token preceding the [no LineTerminator here] restriction.
+         * @param {ASTNode} node The node to be checked.
+         * @returns {boolean} True if the node is incorrectly parenthesised.
+         * @private
+         */
+        function hasExcessParensNoLineTerminator(token, node) {
+            if (token.loc.end.line === node.loc.start.line) {
+                return hasExcessParens(node);
+            }
+
+            return hasDoubleExcessParens(node);
+        }
+
+        /**
+         * Determines whether a node should be preceded by an additional space when removing parens
+         * @param {ASTNode} node node to evaluate; must be surrounded by parentheses
+         * @returns {boolean} `true` if a space should be inserted before the node
+         * @private
+         */
+        function requiresLeadingSpace(node) {
+            const leftParenToken = sourceCode.getTokenBefore(node);
+            const tokenBeforeLeftParen = sourceCode.getTokenBefore(leftParenToken, { includeComments: true });
+            const tokenAfterLeftParen = sourceCode.getTokenAfter(leftParenToken, { includeComments: true });
+
+            return tokenBeforeLeftParen &&
+                tokenBeforeLeftParen.range[1] === leftParenToken.range[0] &&
+                leftParenToken.range[1] === tokenAfterLeftParen.range[0] &&
+                !astUtils.canTokensBeAdjacent(tokenBeforeLeftParen, tokenAfterLeftParen);
+        }
+
+        /**
+         * Determines whether a node should be followed by an additional space when removing parens
+         * @param {ASTNode} node node to evaluate; must be surrounded by parentheses
+         * @returns {boolean} `true` if a space should be inserted after the node
+         * @private
+         */
+        function requiresTrailingSpace(node) {
+            const nextTwoTokens = sourceCode.getTokensAfter(node, { count: 2 });
+            const rightParenToken = nextTwoTokens[0];
+            const tokenAfterRightParen = nextTwoTokens[1];
+            const tokenBeforeRightParen = sourceCode.getLastToken(node);
+
+            return rightParenToken && tokenAfterRightParen &&
+                !sourceCode.isSpaceBetweenTokens(rightParenToken, tokenAfterRightParen) &&
+                !astUtils.canTokensBeAdjacent(tokenBeforeRightParen, tokenAfterRightParen);
+        }
+
+        /**
+         * Determines if a given expression node is an IIFE
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} `true` if the given node is an IIFE
+         */
+        function isIIFE(node) {
+            const maybeCallNode = astUtils.skipChainExpression(node);
+
+            return maybeCallNode.type === "CallExpression" && maybeCallNode.callee.type === "FunctionExpression";
+        }
+
+        /**
+         * Determines if the given node can be the assignment target in destructuring or the LHS of an assignment.
+         * This is to avoid an autofix that could change behavior because parsers mistakenly allow invalid syntax,
+         * such as `(a = b) = c` and `[(a = b) = c] = []`. Ideally, this function shouldn't be necessary.
+         * @param {ASTNode} [node] The node to check
+         * @returns {boolean} `true` if the given node can be a valid assignment target
+         */
+        function canBeAssignmentTarget(node) {
+            return node && (node.type === "Identifier" || node.type === "MemberExpression");
+        }
+
+        /**
+         * Checks if a node is fixable.
+         * A node is fixable if removing a single pair of surrounding parentheses does not turn it
+         * into a directive after fixing other nodes.
+         * Almost all nodes are fixable, except if all of the following conditions are met:
+         * The node is a string Literal
+         * It has a single pair of parentheses
+         * It is the only child of an ExpressionStatement
+         * @param {ASTNode} node The node to evaluate.
+         * @returns {boolean} Whether or not the node is fixable.
+         * @private
+         */
+        function isFixable(node) {
+
+            // if it's not a string literal it can be autofixed
+            if (node.type !== "Literal" || typeof node.value !== "string") {
+                return true;
+            }
+            if (isParenthesisedTwice(node)) {
+                return true;
+            }
+            return !astUtils.isTopLevelExpressionStatement(node.parent);
+        }
+
+        /**
+         * Report the node
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function report(node) {
+            const leftParenToken = sourceCode.getTokenBefore(node);
+            const rightParenToken = sourceCode.getTokenAfter(node);
+
+            if (!isParenthesisedTwice(node)) {
+                if (tokensToIgnore.has(sourceCode.getFirstToken(node))) {
+                    return;
+                }
+
+                if (isIIFE(node) && !isParenthesised(node.callee)) {
+                    return;
+                }
+
+                if (ALLOW_PARENS_AFTER_COMMENT_PATTERN) {
+                    const commentsBeforeLeftParenToken = sourceCode.getCommentsBefore(leftParenToken);
+                    const totalCommentsBeforeLeftParenTokenCount = commentsBeforeLeftParenToken.length;
+                    const ignorePattern = new RegExp(ALLOW_PARENS_AFTER_COMMENT_PATTERN, "u");
+
+                    if (
+                        totalCommentsBeforeLeftParenTokenCount > 0 &&
+                        ignorePattern.test(commentsBeforeLeftParenToken[totalCommentsBeforeLeftParenTokenCount - 1].value)
+                    ) {
+                        return;
+                    }
+                }
+            }
+
+            /**
+             * Finishes reporting
+             * @returns {void}
+             * @private
+             */
+            function finishReport() {
+                context.report({
+                    node,
+                    loc: leftParenToken.loc,
+                    messageId: "unexpected",
+                    fix: isFixable(node)
+                        ? fixer => {
+                            const parenthesizedSource = sourceCode.text.slice(leftParenToken.range[1], rightParenToken.range[0]);
+
+                            return fixer.replaceTextRange([
+                                leftParenToken.range[0],
+                                rightParenToken.range[1]
+                            ], (requiresLeadingSpace(node) ? " " : "") + parenthesizedSource + (requiresTrailingSpace(node) ? " " : ""));
+                        }
+                        : null
+                });
+            }
+
+            if (reportsBuffer) {
+                reportsBuffer.reports.push({ node, finishReport });
+                return;
+            }
+
+            finishReport();
+        }
+
+        /**
+         * Evaluate a argument of the node.
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkArgumentWithPrecedence(node) {
+            if (hasExcessParensWithPrecedence(node.argument, precedence(node))) {
+                report(node.argument);
+            }
+        }
+
+        /**
+         * Check if a member expression contains a call expression
+         * @param {ASTNode} node MemberExpression node to evaluate
+         * @returns {boolean} true if found, false if not
+         */
+        function doesMemberExpressionContainCallExpression(node) {
+            let currentNode = node.object;
+            let currentNodeType = node.object.type;
+
+            while (currentNodeType === "MemberExpression") {
+                currentNode = currentNode.object;
+                currentNodeType = currentNode.type;
+            }
+
+            return currentNodeType === "CallExpression";
+        }
+
+        /**
+         * Evaluate a new call
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkCallNew(node) {
+            const callee = node.callee;
+
+            if (hasExcessParensWithPrecedence(callee, precedence(node))) {
+                if (
+                    hasDoubleExcessParens(callee) ||
+                    !(
+                        isIIFE(node) ||
+
+                        // (new A)(); new (new A)();
+                        (
+                            callee.type === "NewExpression" &&
+                            !isNewExpressionWithParens(callee) &&
+                            !(
+                                node.type === "NewExpression" &&
+                                !isNewExpressionWithParens(node)
+                            )
+                        ) ||
+
+                        // new (a().b)(); new (a.b().c);
+                        (
+                            node.type === "NewExpression" &&
+                            callee.type === "MemberExpression" &&
+                            doesMemberExpressionContainCallExpression(callee)
+                        ) ||
+
+                        // (a?.b)(); (a?.())();
+                        (
+                            !node.optional &&
+                            callee.type === "ChainExpression"
+                        )
+                    )
+                ) {
+                    report(node.callee);
+                }
+            }
+            node.arguments
+                .filter(arg => hasExcessParensWithPrecedence(arg, PRECEDENCE_OF_ASSIGNMENT_EXPR))
+                .forEach(report);
+        }
+
+        /**
+         * Evaluate binary logicals
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkBinaryLogical(node) {
+            const prec = precedence(node);
+            const leftPrecedence = precedence(node.left);
+            const rightPrecedence = precedence(node.right);
+            const isExponentiation = node.operator === "**";
+            const shouldSkipLeft = NESTED_BINARY && (node.left.type === "BinaryExpression" || node.left.type === "LogicalExpression");
+            const shouldSkipRight = NESTED_BINARY && (node.right.type === "BinaryExpression" || node.right.type === "LogicalExpression");
+
+            if (!shouldSkipLeft && hasExcessParens(node.left)) {
+                if (
+                    !(["AwaitExpression", "UnaryExpression"].includes(node.left.type) && isExponentiation) &&
+                    !astUtils.isMixedLogicalAndCoalesceExpressions(node.left, node) &&
+                    (leftPrecedence > prec || (leftPrecedence === prec && !isExponentiation)) ||
+                    isParenthesisedTwice(node.left)
+                ) {
+                    report(node.left);
+                }
+            }
+
+            if (!shouldSkipRight && hasExcessParens(node.right)) {
+                if (
+                    !astUtils.isMixedLogicalAndCoalesceExpressions(node.right, node) &&
+                    (rightPrecedence > prec || (rightPrecedence === prec && isExponentiation)) ||
+                    isParenthesisedTwice(node.right)
+                ) {
+                    report(node.right);
+                }
+            }
+        }
+
+        /**
+         * Check the parentheses around the super class of the given class definition.
+         * @param {ASTNode} node The node of class declarations to check.
+         * @returns {void}
+         */
+        function checkClass(node) {
+            if (!node.superClass) {
+                return;
+            }
+
+            /*
+             * If `node.superClass` is a LeftHandSideExpression, parentheses are extra.
+             * Otherwise, parentheses are needed.
+             */
+            const hasExtraParens = precedence(node.superClass) > PRECEDENCE_OF_UPDATE_EXPR
+                ? hasExcessParens(node.superClass)
+                : hasDoubleExcessParens(node.superClass);
+
+            if (hasExtraParens) {
+                report(node.superClass);
+            }
+        }
+
+        /**
+         * Check the parentheses around the argument of the given spread operator.
+         * @param {ASTNode} node The node of spread elements/properties to check.
+         * @returns {void}
+         */
+        function checkSpreadOperator(node) {
+            if (hasExcessParensWithPrecedence(node.argument, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                report(node.argument);
+            }
+        }
+
+        /**
+         * Checks the parentheses for an ExpressionStatement or ExportDefaultDeclaration
+         * @param {ASTNode} node The ExpressionStatement.expression or ExportDefaultDeclaration.declaration node
+         * @returns {void}
+         */
+        function checkExpressionOrExportStatement(node) {
+            const firstToken = isParenthesised(node) ? sourceCode.getTokenBefore(node) : sourceCode.getFirstToken(node);
+            const secondToken = sourceCode.getTokenAfter(firstToken, astUtils.isNotOpeningParenToken);
+            const thirdToken = secondToken ? sourceCode.getTokenAfter(secondToken) : null;
+            const tokenAfterClosingParens = secondToken ? sourceCode.getTokenAfter(secondToken, astUtils.isNotClosingParenToken) : null;
+
+            if (
+                astUtils.isOpeningParenToken(firstToken) &&
+                (
+                    astUtils.isOpeningBraceToken(secondToken) ||
+                    secondToken.type === "Keyword" && (
+                        secondToken.value === "function" ||
+                        secondToken.value === "class" ||
+                        secondToken.value === "let" &&
+                            tokenAfterClosingParens &&
+                            (
+                                astUtils.isOpeningBracketToken(tokenAfterClosingParens) ||
+                                tokenAfterClosingParens.type === "Identifier"
+                            )
+                    ) ||
+                    secondToken && secondToken.type === "Identifier" && secondToken.value === "async" && thirdToken && thirdToken.type === "Keyword" && thirdToken.value === "function"
+                )
+            ) {
+                tokensToIgnore.add(secondToken);
+            }
+
+            const hasExtraParens = node.parent.type === "ExportDefaultDeclaration"
+                ? hasExcessParensWithPrecedence(node, PRECEDENCE_OF_ASSIGNMENT_EXPR)
+                : hasExcessParens(node);
+
+            if (hasExtraParens) {
+                report(node);
+            }
+        }
+
+        /**
+         * Finds the path from the given node to the specified ancestor.
+         * @param {ASTNode} node First node in the path.
+         * @param {ASTNode} ancestor Last node in the path.
+         * @returns {ASTNode[]} Path, including both nodes.
+         * @throws {Error} If the given node does not have the specified ancestor.
+         */
+        function pathToAncestor(node, ancestor) {
+            const path = [node];
+            let currentNode = node;
+
+            while (currentNode !== ancestor) {
+
+                currentNode = currentNode.parent;
+
+                /* c8 ignore start */
+                if (currentNode === null) {
+                    throw new Error("Nodes are not in the ancestor-descendant relationship.");
+                }/* c8 ignore stop */
+
+                path.push(currentNode);
+            }
+
+            return path;
+        }
+
+        /**
+         * Finds the path from the given node to the specified descendant.
+         * @param {ASTNode} node First node in the path.
+         * @param {ASTNode} descendant Last node in the path.
+         * @returns {ASTNode[]} Path, including both nodes.
+         * @throws {Error} If the given node does not have the specified descendant.
+         */
+        function pathToDescendant(node, descendant) {
+            return pathToAncestor(descendant, node).reverse();
+        }
+
+        /**
+         * Checks whether the syntax of the given ancestor of an 'in' expression inside a for-loop initializer
+         * is preventing the 'in' keyword from being interpreted as a part of an ill-formed for-in loop.
+         * @param {ASTNode} node Ancestor of an 'in' expression.
+         * @param {ASTNode} child Child of the node, ancestor of the same 'in' expression or the 'in' expression itself.
+         * @returns {boolean} True if the keyword 'in' would be interpreted as the 'in' operator, without any parenthesis.
+         */
+        function isSafelyEnclosingInExpression(node, child) {
+            switch (node.type) {
+                case "ArrayExpression":
+                case "ArrayPattern":
+                case "BlockStatement":
+                case "ObjectExpression":
+                case "ObjectPattern":
+                case "TemplateLiteral":
+                    return true;
+                case "ArrowFunctionExpression":
+                case "FunctionExpression":
+                    return node.params.includes(child);
+                case "CallExpression":
+                case "NewExpression":
+                    return node.arguments.includes(child);
+                case "MemberExpression":
+                    return node.computed && node.property === child;
+                case "ConditionalExpression":
+                    return node.consequent === child;
+                default:
+                    return false;
+            }
+        }
+
+        /**
+         * Starts a new reports buffering. Warnings will be stored in a buffer instead of being reported immediately.
+         * An additional logic that requires multiple nodes (e.g. a whole subtree) may dismiss some of the stored warnings.
+         * @returns {void}
+         */
+        function startNewReportsBuffering() {
+            reportsBuffer = {
+                upper: reportsBuffer,
+                inExpressionNodes: [],
+                reports: []
+            };
+        }
+
+        /**
+         * Ends the current reports buffering.
+         * @returns {void}
+         */
+        function endCurrentReportsBuffering() {
+            const { upper, inExpressionNodes, reports } = reportsBuffer;
+
+            if (upper) {
+                upper.inExpressionNodes.push(...inExpressionNodes);
+                upper.reports.push(...reports);
+            } else {
+
+                // flush remaining reports
+                reports.forEach(({ finishReport }) => finishReport());
+            }
+
+            reportsBuffer = upper;
+        }
+
+        /**
+         * Checks whether the given node is in the current reports buffer.
+         * @param {ASTNode} node Node to check.
+         * @returns {boolean} True if the node is in the current buffer, false otherwise.
+         */
+        function isInCurrentReportsBuffer(node) {
+            return reportsBuffer.reports.some(r => r.node === node);
+        }
+
+        /**
+         * Removes the given node from the current reports buffer.
+         * @param {ASTNode} node Node to remove.
+         * @returns {void}
+         */
+        function removeFromCurrentReportsBuffer(node) {
+            reportsBuffer.reports = reportsBuffer.reports.filter(r => r.node !== node);
+        }
+
+        /**
+         * Checks whether a node is a MemberExpression at NewExpression's callee.
+         * @param {ASTNode} node node to check.
+         * @returns {boolean} True if the node is a MemberExpression at NewExpression's callee. false otherwise.
+         */
+        function isMemberExpInNewCallee(node) {
+            if (node.type === "MemberExpression") {
+                return node.parent.type === "NewExpression" && node.parent.callee === node
+                    ? true
+                    : node.parent.object === node && isMemberExpInNewCallee(node.parent);
+            }
+            return false;
+        }
+
+        /**
+         * Checks if the left-hand side of an assignment is an identifier, the operator is one of
+         * `=`, `&&=`, `||=` or `??=` and the right-hand side is an anonymous class or function.
+         *
+         * As per https://tc39.es/ecma262/#sec-assignment-operators-runtime-semantics-evaluation, an
+         * assignment involving one of the operators `=`, `&&=`, `||=` or `??=` where the right-hand
+         * side is an anonymous class or function and the left-hand side is an *unparenthesized*
+         * identifier has different semantics than other assignments.
+         * Specifically, when an expression like `foo = function () {}` is evaluated, `foo.name`
+         * will be set to the string "foo", i.e. the identifier name. The same thing does not happen
+         * when evaluating `(foo) = function () {}`.
+         * Since the parenthesizing of the identifier in the left-hand side is significant in this
+         * special case, the parentheses, if present, should not be flagged as unnecessary.
+         * @param {ASTNode} node an AssignmentExpression node.
+         * @returns {boolean} `true` if the left-hand side of the assignment is an identifier, the
+         * operator is one of `=`, `&&=`, `||=` or `??=` and the right-hand side is an anonymous
+         * class or function; otherwise, `false`.
+         */
+        function isAnonymousFunctionAssignmentException({ left, operator, right }) {
+            if (left.type === "Identifier" && ["=", "&&=", "||=", "??="].includes(operator)) {
+                const rhsType = right.type;
+
+                if (rhsType === "ArrowFunctionExpression") {
+                    return true;
+                }
+                if ((rhsType === "FunctionExpression" || rhsType === "ClassExpression") && !right.id) {
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        return {
+            ArrayExpression(node) {
+                node.elements
+                    .filter(e => e && hasExcessParensWithPrecedence(e, PRECEDENCE_OF_ASSIGNMENT_EXPR))
+                    .forEach(report);
+            },
+
+            ArrayPattern(node) {
+                node.elements
+                    .filter(e => canBeAssignmentTarget(e) && hasExcessParens(e))
+                    .forEach(report);
+            },
+
+            ArrowFunctionExpression(node) {
+                if (isReturnAssignException(node)) {
+                    return;
+                }
+
+                if (node.body.type === "ConditionalExpression" &&
+                    IGNORE_ARROW_CONDITIONALS
+                ) {
+                    return;
+                }
+
+                if (node.body.type !== "BlockStatement") {
+                    const firstBodyToken = sourceCode.getFirstToken(node.body, astUtils.isNotOpeningParenToken);
+                    const tokenBeforeFirst = sourceCode.getTokenBefore(firstBodyToken);
+
+                    if (astUtils.isOpeningParenToken(tokenBeforeFirst) && astUtils.isOpeningBraceToken(firstBodyToken)) {
+                        tokensToIgnore.add(firstBodyToken);
+                    }
+                    if (hasExcessParensWithPrecedence(node.body, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                        report(node.body);
+                    }
+                }
+            },
+
+            AssignmentExpression(node) {
+                if (canBeAssignmentTarget(node.left) && hasExcessParens(node.left) &&
+                    (!isAnonymousFunctionAssignmentException(node) || isParenthesisedTwice(node.left))) {
+                    report(node.left);
+                }
+
+                if (!isReturnAssignException(node) && hasExcessParensWithPrecedence(node.right, precedence(node))) {
+                    report(node.right);
+                }
+            },
+
+            BinaryExpression(node) {
+                if (reportsBuffer && node.operator === "in") {
+                    reportsBuffer.inExpressionNodes.push(node);
+                }
+
+                checkBinaryLogical(node);
+            },
+
+            CallExpression: checkCallNew,
+
+            ConditionalExpression(node) {
+                if (isReturnAssignException(node)) {
+                    return;
+                }
+
+                const availableTypes = new Set(["BinaryExpression", "LogicalExpression"]);
+
+                if (
+                    !(EXCEPT_COND_TERNARY && availableTypes.has(node.test.type)) &&
+                    !isCondAssignException(node) &&
+                    hasExcessParensWithPrecedence(node.test, precedence({ type: "LogicalExpression", operator: "||" }))
+                ) {
+                    report(node.test);
+                }
+
+                if (
+                    !(EXCEPT_COND_TERNARY && availableTypes.has(node.consequent.type)) &&
+                    hasExcessParensWithPrecedence(node.consequent, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                    report(node.consequent);
+                }
+
+                if (
+                    !(EXCEPT_COND_TERNARY && availableTypes.has(node.alternate.type)) &&
+                    hasExcessParensWithPrecedence(node.alternate, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                    report(node.alternate);
+                }
+            },
+
+            DoWhileStatement(node) {
+                if (hasExcessParens(node.test) && !isCondAssignException(node)) {
+                    report(node.test);
+                }
+            },
+
+            ExportDefaultDeclaration: node => checkExpressionOrExportStatement(node.declaration),
+            ExpressionStatement: node => checkExpressionOrExportStatement(node.expression),
+
+            ForInStatement(node) {
+                if (node.left.type !== "VariableDeclaration") {
+                    const firstLeftToken = sourceCode.getFirstToken(node.left, astUtils.isNotOpeningParenToken);
+
+                    if (
+                        firstLeftToken.value === "let" &&
+                        astUtils.isOpeningBracketToken(
+                            sourceCode.getTokenAfter(firstLeftToken, astUtils.isNotClosingParenToken)
+                        )
+                    ) {
+
+                        // ForInStatement#left expression cannot start with `let[`.
+                        tokensToIgnore.add(firstLeftToken);
+                    }
+                }
+
+                if (hasExcessParens(node.left)) {
+                    report(node.left);
+                }
+
+                if (hasExcessParens(node.right)) {
+                    report(node.right);
+                }
+            },
+
+            ForOfStatement(node) {
+                if (node.left.type !== "VariableDeclaration") {
+                    const firstLeftToken = sourceCode.getFirstToken(node.left, astUtils.isNotOpeningParenToken);
+
+                    if (firstLeftToken.value === "let") {
+
+                        // ForOfStatement#left expression cannot start with `let`.
+                        tokensToIgnore.add(firstLeftToken);
+                    }
+                }
+
+                if (hasExcessParens(node.left)) {
+                    report(node.left);
+                }
+
+                if (hasExcessParensWithPrecedence(node.right, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                    report(node.right);
+                }
+            },
+
+            ForStatement(node) {
+                if (node.test && hasExcessParens(node.test) && !isCondAssignException(node)) {
+                    report(node.test);
+                }
+
+                if (node.update && hasExcessParens(node.update)) {
+                    report(node.update);
+                }
+
+                if (node.init) {
+
+                    if (node.init.type !== "VariableDeclaration") {
+                        const firstToken = sourceCode.getFirstToken(node.init, astUtils.isNotOpeningParenToken);
+
+                        if (
+                            firstToken.value === "let" &&
+                            astUtils.isOpeningBracketToken(
+                                sourceCode.getTokenAfter(firstToken, astUtils.isNotClosingParenToken)
+                            )
+                        ) {
+
+                            // ForStatement#init expression cannot start with `let[`.
+                            tokensToIgnore.add(firstToken);
+                        }
+                    }
+
+                    startNewReportsBuffering();
+
+                    if (hasExcessParens(node.init)) {
+                        report(node.init);
+                    }
+                }
+            },
+
+            "ForStatement > *.init:exit"(node) {
+
+                /*
+                 * Removing parentheses around `in` expressions might change semantics and cause errors.
+                 *
+                 * For example, this valid for loop:
+                 *      for (let a = (b in c); ;);
+                 * after removing parentheses would be treated as an invalid for-in loop:
+                 *      for (let a = b in c; ;);
+                 */
+
+                if (reportsBuffer.reports.length) {
+                    reportsBuffer.inExpressionNodes.forEach(inExpressionNode => {
+                        const path = pathToDescendant(node, inExpressionNode);
+                        let nodeToExclude;
+
+                        for (let i = 0; i < path.length; i++) {
+                            const pathNode = path[i];
+
+                            if (i < path.length - 1) {
+                                const nextPathNode = path[i + 1];
+
+                                if (isSafelyEnclosingInExpression(pathNode, nextPathNode)) {
+
+                                    // The 'in' expression in safely enclosed by the syntax of its ancestor nodes (e.g. by '{}' or '[]').
+                                    return;
+                                }
+                            }
+
+                            if (isParenthesised(pathNode)) {
+                                if (isInCurrentReportsBuffer(pathNode)) {
+
+                                    // This node was supposed to be reported, but parentheses might be necessary.
+
+                                    if (isParenthesisedTwice(pathNode)) {
+
+                                        /*
+                                         * This node is parenthesised twice, it certainly has at least one pair of `extra` parentheses.
+                                         * If the --fix option is on, the current fixing iteration will remove only one pair of parentheses.
+                                         * The remaining pair is safely enclosing the 'in' expression.
+                                         */
+                                        return;
+                                    }
+
+                                    // Exclude the outermost node only.
+                                    if (!nodeToExclude) {
+                                        nodeToExclude = pathNode;
+                                    }
+
+                                    // Don't break the loop here, there might be some safe nodes or parentheses that will stay inside.
+
+                                } else {
+
+                                    // This node will stay parenthesised, the 'in' expression in safely enclosed by '()'.
+                                    return;
+                                }
+                            }
+                        }
+
+                        // Exclude the node from the list (i.e. treat parentheses as necessary)
+                        removeFromCurrentReportsBuffer(nodeToExclude);
+                    });
+                }
+
+                endCurrentReportsBuffering();
+            },
+
+            IfStatement(node) {
+                if (hasExcessParens(node.test) && !isCondAssignException(node)) {
+                    report(node.test);
+                }
+            },
+
+            ImportExpression(node) {
+                const { source } = node;
+
+                if (source.type === "SequenceExpression") {
+                    if (hasDoubleExcessParens(source)) {
+                        report(source);
+                    }
+                } else if (hasExcessParens(source)) {
+                    report(source);
+                }
+            },
+
+            LogicalExpression: checkBinaryLogical,
+
+            MemberExpression(node) {
+                const shouldAllowWrapOnce = isMemberExpInNewCallee(node) &&
+                  doesMemberExpressionContainCallExpression(node);
+                const nodeObjHasExcessParens = shouldAllowWrapOnce
+                    ? hasDoubleExcessParens(node.object)
+                    : hasExcessParens(node.object) &&
+                    !(
+                        isImmediateFunctionPrototypeMethodCall(node.parent) &&
+                        node.parent.callee === node &&
+                        IGNORE_FUNCTION_PROTOTYPE_METHODS
+                    );
+
+                if (
+                    nodeObjHasExcessParens &&
+                    precedence(node.object) >= precedence(node) &&
+                    (
+                        node.computed ||
+                        !(
+                            astUtils.isDecimalInteger(node.object) ||
+
+                            // RegExp literal is allowed to have parens (#1589)
+                            (node.object.type === "Literal" && node.object.regex)
+                        )
+                    )
+                ) {
+                    report(node.object);
+                }
+
+                if (nodeObjHasExcessParens &&
+                  node.object.type === "CallExpression"
+                ) {
+                    report(node.object);
+                }
+
+                if (nodeObjHasExcessParens &&
+                  !IGNORE_NEW_IN_MEMBER_EXPR &&
+                  node.object.type === "NewExpression" &&
+                  isNewExpressionWithParens(node.object)) {
+                    report(node.object);
+                }
+
+                if (nodeObjHasExcessParens &&
+                    node.optional &&
+                    node.object.type === "ChainExpression"
+                ) {
+                    report(node.object);
+                }
+
+                if (node.computed && hasExcessParens(node.property)) {
+                    report(node.property);
+                }
+            },
+
+            "MethodDefinition[computed=true]"(node) {
+                if (hasExcessParensWithPrecedence(node.key, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                    report(node.key);
+                }
+            },
+
+            NewExpression: checkCallNew,
+
+            ObjectExpression(node) {
+                node.properties
+                    .filter(property => property.value && hasExcessParensWithPrecedence(property.value, PRECEDENCE_OF_ASSIGNMENT_EXPR))
+                    .forEach(property => report(property.value));
+            },
+
+            ObjectPattern(node) {
+                node.properties
+                    .filter(property => {
+                        const value = property.value;
+
+                        return canBeAssignmentTarget(value) && hasExcessParens(value);
+                    }).forEach(property => report(property.value));
+            },
+
+            Property(node) {
+                if (node.computed) {
+                    const { key } = node;
+
+                    if (key && hasExcessParensWithPrecedence(key, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                        report(key);
+                    }
+                }
+            },
+
+            PropertyDefinition(node) {
+                if (node.computed && hasExcessParensWithPrecedence(node.key, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                    report(node.key);
+                }
+
+                if (node.value && hasExcessParensWithPrecedence(node.value, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                    report(node.value);
+                }
+            },
+
+            RestElement(node) {
+                const argument = node.argument;
+
+                if (canBeAssignmentTarget(argument) && hasExcessParens(argument)) {
+                    report(argument);
+                }
+            },
+
+            ReturnStatement(node) {
+                const returnToken = sourceCode.getFirstToken(node);
+
+                if (isReturnAssignException(node)) {
+                    return;
+                }
+
+                if (node.argument &&
+                        hasExcessParensNoLineTerminator(returnToken, node.argument) &&
+
+                        // RegExp literal is allowed to have parens (#1589)
+                        !(node.argument.type === "Literal" && node.argument.regex)) {
+                    report(node.argument);
+                }
+            },
+
+            SequenceExpression(node) {
+                const precedenceOfNode = precedence(node);
+
+                node.expressions
+                    .filter(e => hasExcessParensWithPrecedence(e, precedenceOfNode))
+                    .forEach(report);
+            },
+
+            SwitchCase(node) {
+                if (node.test && hasExcessParens(node.test)) {
+                    report(node.test);
+                }
+            },
+
+            SwitchStatement(node) {
+                if (hasExcessParens(node.discriminant)) {
+                    report(node.discriminant);
+                }
+            },
+
+            ThrowStatement(node) {
+                const throwToken = sourceCode.getFirstToken(node);
+
+                if (hasExcessParensNoLineTerminator(throwToken, node.argument)) {
+                    report(node.argument);
+                }
+            },
+
+            UnaryExpression: checkArgumentWithPrecedence,
+            UpdateExpression(node) {
+                if (node.prefix) {
+                    checkArgumentWithPrecedence(node);
+                } else {
+                    const { argument } = node;
+                    const operatorToken = sourceCode.getLastToken(node);
+
+                    if (argument.loc.end.line === operatorToken.loc.start.line) {
+                        checkArgumentWithPrecedence(node);
+                    } else {
+                        if (hasDoubleExcessParens(argument)) {
+                            report(argument);
+                        }
+                    }
+                }
+            },
+            AwaitExpression: checkArgumentWithPrecedence,
+
+            VariableDeclarator(node) {
+                if (
+                    node.init && hasExcessParensWithPrecedence(node.init, PRECEDENCE_OF_ASSIGNMENT_EXPR) &&
+
+                    // RegExp literal is allowed to have parens (#1589)
+                    !(node.init.type === "Literal" && node.init.regex)
+                ) {
+                    report(node.init);
+                }
+            },
+
+            WhileStatement(node) {
+                if (hasExcessParens(node.test) && !isCondAssignException(node)) {
+                    report(node.test);
+                }
+            },
+
+            WithStatement(node) {
+                if (hasExcessParens(node.object)) {
+                    report(node.object);
+                }
+            },
+
+            YieldExpression(node) {
+                if (node.argument) {
+                    const yieldToken = sourceCode.getFirstToken(node);
+
+                    if ((precedence(node.argument) >= precedence(node) &&
+                            hasExcessParensNoLineTerminator(yieldToken, node.argument)) ||
+                            hasDoubleExcessParens(node.argument)) {
+                        report(node.argument);
+                    }
+                }
+            },
+
+            ClassDeclaration: checkClass,
+            ClassExpression: checkClass,
+
+            SpreadElement: checkSpreadOperator,
+            SpreadProperty: checkSpreadOperator,
+            ExperimentalSpreadProperty: checkSpreadOperator,
+
+            TemplateLiteral(node) {
+                node.expressions
+                    .filter(e => e && hasExcessParens(e))
+                    .forEach(report);
+            },
+
+            AssignmentPattern(node) {
+                const { left, right } = node;
+
+                if (canBeAssignmentTarget(left) && hasExcessParens(left)) {
+                    report(left);
+                }
+
+                if (right && hasExcessParensWithPrecedence(right, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                    report(right);
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-extra-semi.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-extra-semi.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-extra-semi.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,147 @@
+/**
+ * @fileoverview Rule to flag use of unnecessary semicolons
+ * @author Nicholas C. Zakas
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const FixTracker = require("./utils/fix-tracker");
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow unnecessary semicolons",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-extra-semi"
+        },
+
+        fixable: "code",
+        schema: [],
+
+        messages: {
+            unexpected: "Unnecessary semicolon."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Checks if a node or token is fixable.
+         * A node is fixable if it can be removed without turning a subsequent statement into a directive after fixing other nodes.
+         * @param {Token} nodeOrToken The node or token to check.
+         * @returns {boolean} Whether or not the node is fixable.
+         */
+        function isFixable(nodeOrToken) {
+            const nextToken = sourceCode.getTokenAfter(nodeOrToken);
+
+            if (!nextToken || nextToken.type !== "String") {
+                return true;
+            }
+            const stringNode = sourceCode.getNodeByRangeIndex(nextToken.range[0]);
+
+            return !astUtils.isTopLevelExpressionStatement(stringNode.parent);
+        }
+
+        /**
+         * Reports an unnecessary semicolon error.
+         * @param {Node|Token} nodeOrToken A node or a token to be reported.
+         * @returns {void}
+         */
+        function report(nodeOrToken) {
+            context.report({
+                node: nodeOrToken,
+                messageId: "unexpected",
+                fix: isFixable(nodeOrToken)
+                    ? fixer =>
+
+                        /*
+                         * Expand the replacement range to include the surrounding
+                         * tokens to avoid conflicting with semi.
+                         * https://github.com/eslint/eslint/issues/7928
+                         */
+                        new FixTracker(fixer, context.sourceCode)
+                            .retainSurroundingTokens(nodeOrToken)
+                            .remove(nodeOrToken)
+                    : null
+            });
+        }
+
+        /**
+         * Checks for a part of a class body.
+         * This checks tokens from a specified token to a next MethodDefinition or the end of class body.
+         * @param {Token} firstToken The first token to check.
+         * @returns {void}
+         */
+        function checkForPartOfClassBody(firstToken) {
+            for (let token = firstToken;
+                token.type === "Punctuator" && !astUtils.isClosingBraceToken(token);
+                token = sourceCode.getTokenAfter(token)
+            ) {
+                if (astUtils.isSemicolonToken(token)) {
+                    report(token);
+                }
+            }
+        }
+
+        return {
+
+            /**
+             * Reports this empty statement, except if the parent node is a loop.
+             * @param {Node} node A EmptyStatement node to be reported.
+             * @returns {void}
+             */
+            EmptyStatement(node) {
+                const parent = node.parent,
+                    allowedParentTypes = [
+                        "ForStatement",
+                        "ForInStatement",
+                        "ForOfStatement",
+                        "WhileStatement",
+                        "DoWhileStatement",
+                        "IfStatement",
+                        "LabeledStatement",
+                        "WithStatement"
+                    ];
+
+                if (!allowedParentTypes.includes(parent.type)) {
+                    report(node);
+                }
+            },
+
+            /**
+             * Checks tokens from the head of this class body to the first MethodDefinition or the end of this class body.
+             * @param {Node} node A ClassBody node to check.
+             * @returns {void}
+             */
+            ClassBody(node) {
+                checkForPartOfClassBody(sourceCode.getFirstToken(node, 1)); // 0 is `{`.
+            },
+
+            /**
+             * Checks tokens from this MethodDefinition to the next MethodDefinition or the end of this class body.
+             * @param {Node} node A MethodDefinition node of the start point.
+             * @returns {void}
+             */
+            "MethodDefinition, PropertyDefinition, StaticBlock"(node) {
+                checkForPartOfClassBody(sourceCode.getTokenAfter(node));
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-fallthrough.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-fallthrough.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-fallthrough.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,196 @@
+/**
+ * @fileoverview Rule to flag fall-through cases in switch statements.
+ * @author Matt DuVall <http://mattduvall.com/>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { directivesPattern } = require("../shared/directives");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const DEFAULT_FALLTHROUGH_COMMENT = /falls?\s?through/iu;
+
+/**
+ * Checks all segments in a set and returns true if any are reachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if any segment is reachable; false otherwise.
+ */
+function isAnySegmentReachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+/**
+ * Checks whether or not a given comment string is really a fallthrough comment and not an ESLint directive.
+ * @param {string} comment The comment string to check.
+ * @param {RegExp} fallthroughCommentPattern The regular expression used for checking for fallthrough comments.
+ * @returns {boolean} `true` if the comment string is truly a fallthrough comment.
+ */
+function isFallThroughComment(comment, fallthroughCommentPattern) {
+    return fallthroughCommentPattern.test(comment) && !directivesPattern.test(comment.trim());
+}
+
+/**
+ * Checks whether or not a given case has a fallthrough comment.
+ * @param {ASTNode} caseWhichFallsThrough SwitchCase node which falls through.
+ * @param {ASTNode} subsequentCase The case after caseWhichFallsThrough.
+ * @param {RuleContext} context A rule context which stores comments.
+ * @param {RegExp} fallthroughCommentPattern A pattern to match comment to.
+ * @returns {boolean} `true` if the case has a valid fallthrough comment.
+ */
+function hasFallthroughComment(caseWhichFallsThrough, subsequentCase, context, fallthroughCommentPattern) {
+    const sourceCode = context.sourceCode;
+
+    if (caseWhichFallsThrough.consequent.length === 1 && caseWhichFallsThrough.consequent[0].type === "BlockStatement") {
+        const trailingCloseBrace = sourceCode.getLastToken(caseWhichFallsThrough.consequent[0]);
+        const commentInBlock = sourceCode.getCommentsBefore(trailingCloseBrace).pop();
+
+        if (commentInBlock && isFallThroughComment(commentInBlock.value, fallthroughCommentPattern)) {
+            return true;
+        }
+    }
+
+    const comment = sourceCode.getCommentsBefore(subsequentCase).pop();
+
+    return Boolean(comment && isFallThroughComment(comment.value, fallthroughCommentPattern));
+}
+
+/**
+ * Checks whether a node and a token are separated by blank lines
+ * @param {ASTNode} node The node to check
+ * @param {Token} token The token to compare against
+ * @returns {boolean} `true` if there are blank lines between node and token
+ */
+function hasBlankLinesBetween(node, token) {
+    return token.loc.start.line > node.loc.end.line + 1;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow fallthrough of `case` statements",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-fallthrough"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    commentPattern: {
+                        type: "string",
+                        default: ""
+                    },
+                    allowEmptyCase: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            case: "Expected a 'break' statement before 'case'.",
+            default: "Expected a 'break' statement before 'default'."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const codePathSegments = [];
+        let currentCodePathSegments = new Set();
+        const sourceCode = context.sourceCode;
+        const allowEmptyCase = options.allowEmptyCase || false;
+
+        /*
+         * We need to use leading comments of the next SwitchCase node because
+         * trailing comments is wrong if semicolons are omitted.
+         */
+        let fallthroughCase = null;
+        let fallthroughCommentPattern = null;
+
+        if (options.commentPattern) {
+            fallthroughCommentPattern = new RegExp(options.commentPattern, "u");
+        } else {
+            fallthroughCommentPattern = DEFAULT_FALLTHROUGH_COMMENT;
+        }
+        return {
+
+            onCodePathStart() {
+                codePathSegments.push(currentCodePathSegments);
+                currentCodePathSegments = new Set();
+            },
+
+            onCodePathEnd() {
+                currentCodePathSegments = codePathSegments.pop();
+            },
+
+            onUnreachableCodePathSegmentStart(segment) {
+                currentCodePathSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                currentCodePathSegments.delete(segment);
+            },
+
+            onCodePathSegmentStart(segment) {
+                currentCodePathSegments.add(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                currentCodePathSegments.delete(segment);
+            },
+
+
+            SwitchCase(node) {
+
+                /*
+                 * Checks whether or not there is a fallthrough comment.
+                 * And reports the previous fallthrough node if that does not exist.
+                 */
+
+                if (fallthroughCase && (!hasFallthroughComment(fallthroughCase, node, context, fallthroughCommentPattern))) {
+                    context.report({
+                        messageId: node.test ? "case" : "default",
+                        node
+                    });
+                }
+                fallthroughCase = null;
+            },
+
+            "SwitchCase:exit"(node) {
+                const nextToken = sourceCode.getTokenAfter(node);
+
+                /*
+                 * `reachable` meant fall through because statements preceded by
+                 * `break`, `return`, or `throw` are unreachable.
+                 * And allows empty cases and the last case.
+                 */
+                if (isAnySegmentReachable(currentCodePathSegments) &&
+                    (node.consequent.length > 0 || (!allowEmptyCase && hasBlankLinesBetween(node, nextToken))) &&
+                    node.parent.cases[node.parent.cases.length - 1] !== node) {
+                    fallthroughCase = node;
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-floating-decimal.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-floating-decimal.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-floating-decimal.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,73 @@
+/**
+ * @fileoverview Rule to flag use of a leading/trailing decimal point in a numeric literal
+ * @author James Allardice
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow leading or trailing decimal points in numeric literals",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-floating-decimal"
+        },
+
+        schema: [],
+        fixable: "code",
+        messages: {
+            leading: "A leading decimal point can be confused with a dot.",
+            trailing: "A trailing decimal point can be confused with a dot."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        return {
+            Literal(node) {
+
+                if (typeof node.value === "number") {
+                    if (node.raw.startsWith(".")) {
+                        context.report({
+                            node,
+                            messageId: "leading",
+                            fix(fixer) {
+                                const tokenBefore = sourceCode.getTokenBefore(node);
+                                const needsSpaceBefore = tokenBefore &&
+                                    tokenBefore.range[1] === node.range[0] &&
+                                    !astUtils.canTokensBeAdjacent(tokenBefore, `0${node.raw}`);
+
+                                return fixer.insertTextBefore(node, needsSpaceBefore ? " 0" : "0");
+                            }
+                        });
+                    }
+                    if (node.raw.indexOf(".") === node.raw.length - 1) {
+                        context.report({
+                            node,
+                            messageId: "trailing",
+                            fix: fixer => fixer.insertTextAfter(node, "0")
+                        });
+                    }
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-func-assign.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-func-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-func-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,78 @@
+/**
+ * @fileoverview Rule to flag use of function declaration identifiers as variables.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow reassigning `function` declarations",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-func-assign"
+        },
+
+        schema: [],
+
+        messages: {
+            isAFunction: "'{{name}}' is a function."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Reports a reference if is non initializer and writable.
+         * @param {References} references Collection of reference to check.
+         * @returns {void}
+         */
+        function checkReference(references) {
+            astUtils.getModifyingReferences(references).forEach(reference => {
+                context.report({
+                    node: reference.identifier,
+                    messageId: "isAFunction",
+                    data: {
+                        name: reference.identifier.name
+                    }
+                });
+            });
+        }
+
+        /**
+         * Finds and reports references that are non initializer and writable.
+         * @param {Variable} variable A variable to check.
+         * @returns {void}
+         */
+        function checkVariable(variable) {
+            if (variable.defs[0].type === "FunctionName") {
+                checkReference(variable.references);
+            }
+        }
+
+        /**
+         * Checks parameters of a given function node.
+         * @param {ASTNode} node A function node to check.
+         * @returns {void}
+         */
+        function checkForFunction(node) {
+            sourceCode.getDeclaredVariables(node).forEach(checkVariable);
+        }
+
+        return {
+            FunctionDeclaration: checkForFunction,
+            FunctionExpression: checkForFunction
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-global-assign.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-global-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-global-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,95 @@
+/**
+ * @fileoverview Rule to disallow assignments to native objects or read-only global variables
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow assignments to native objects or read-only global variables",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-global-assign"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    exceptions: {
+                        type: "array",
+                        items: { type: "string" },
+                        uniqueItems: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            globalShouldNotBeModified: "Read-only global '{{name}}' should not be modified."
+        }
+    },
+
+    create(context) {
+        const config = context.options[0];
+        const sourceCode = context.sourceCode;
+        const exceptions = (config && config.exceptions) || [];
+
+        /**
+         * Reports write references.
+         * @param {Reference} reference A reference to check.
+         * @param {int} index The index of the reference in the references.
+         * @param {Reference[]} references The array that the reference belongs to.
+         * @returns {void}
+         */
+        function checkReference(reference, index, references) {
+            const identifier = reference.identifier;
+
+            if (reference.init === false &&
+                reference.isWrite() &&
+
+                /*
+                 * Destructuring assignments can have multiple default value,
+                 * so possibly there are multiple writeable references for the same identifier.
+                 */
+                (index === 0 || references[index - 1].identifier !== identifier)
+            ) {
+                context.report({
+                    node: identifier,
+                    messageId: "globalShouldNotBeModified",
+                    data: {
+                        name: identifier.name
+                    }
+                });
+            }
+        }
+
+        /**
+         * Reports write references if a given variable is read-only builtin.
+         * @param {Variable} variable A variable to check.
+         * @returns {void}
+         */
+        function checkVariable(variable) {
+            if (variable.writeable === false && !exceptions.includes(variable.name)) {
+                variable.references.forEach(checkReference);
+            }
+        }
+
+        return {
+            Program(node) {
+                const globalScope = sourceCode.getScope(node);
+
+                globalScope.variables.forEach(checkVariable);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-implicit-coercion.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-implicit-coercion.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-implicit-coercion.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,380 @@
+/**
+ * @fileoverview A rule to disallow the type conversions with shorter notations.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const INDEX_OF_PATTERN = /^(?:i|lastI)ndexOf$/u;
+const ALLOWABLE_OPERATORS = ["~", "!!", "+", "*"];
+
+/**
+ * Parses and normalizes an option object.
+ * @param {Object} options An option object to parse.
+ * @returns {Object} The parsed and normalized option object.
+ */
+function parseOptions(options) {
+    return {
+        boolean: "boolean" in options ? options.boolean : true,
+        number: "number" in options ? options.number : true,
+        string: "string" in options ? options.string : true,
+        disallowTemplateShorthand: "disallowTemplateShorthand" in options ? options.disallowTemplateShorthand : false,
+        allow: options.allow || []
+    };
+}
+
+/**
+ * Checks whether or not a node is a double logical negating.
+ * @param {ASTNode} node An UnaryExpression node to check.
+ * @returns {boolean} Whether or not the node is a double logical negating.
+ */
+function isDoubleLogicalNegating(node) {
+    return (
+        node.operator === "!" &&
+        node.argument.type === "UnaryExpression" &&
+        node.argument.operator === "!"
+    );
+}
+
+/**
+ * Checks whether or not a node is a binary negating of `.indexOf()` method calling.
+ * @param {ASTNode} node An UnaryExpression node to check.
+ * @returns {boolean} Whether or not the node is a binary negating of `.indexOf()` method calling.
+ */
+function isBinaryNegatingOfIndexOf(node) {
+    if (node.operator !== "~") {
+        return false;
+    }
+    const callNode = astUtils.skipChainExpression(node.argument);
+
+    return (
+        callNode.type === "CallExpression" &&
+        astUtils.isSpecificMemberAccess(callNode.callee, null, INDEX_OF_PATTERN)
+    );
+}
+
+/**
+ * Checks whether or not a node is a multiplying by one.
+ * @param {BinaryExpression} node A BinaryExpression node to check.
+ * @returns {boolean} Whether or not the node is a multiplying by one.
+ */
+function isMultiplyByOne(node) {
+    return node.operator === "*" && (
+        node.left.type === "Literal" && node.left.value === 1 ||
+        node.right.type === "Literal" && node.right.value === 1
+    );
+}
+
+/**
+ * Checks whether the given node logically represents multiplication by a fraction of `1`.
+ * For example, `a * 1` in `a * 1 / b` is technically multiplication by `1`, but the
+ * whole expression can be logically interpreted as `a * (1 / b)` rather than `(a * 1) / b`.
+ * @param {BinaryExpression} node A BinaryExpression node to check.
+ * @param {SourceCode} sourceCode The source code object.
+ * @returns {boolean} Whether or not the node is a multiplying by a fraction of `1`.
+ */
+function isMultiplyByFractionOfOne(node, sourceCode) {
+    return node.type === "BinaryExpression" &&
+        node.operator === "*" &&
+        (node.right.type === "Literal" && node.right.value === 1) &&
+        node.parent.type === "BinaryExpression" &&
+        node.parent.operator === "/" &&
+        node.parent.left === node &&
+        !astUtils.isParenthesised(sourceCode, node);
+}
+
+/**
+ * Checks whether the result of a node is numeric or not
+ * @param {ASTNode} node The node to test
+ * @returns {boolean} true if the node is a number literal or a `Number()`, `parseInt` or `parseFloat` call
+ */
+function isNumeric(node) {
+    return (
+        node.type === "Literal" && typeof node.value === "number" ||
+        node.type === "CallExpression" && (
+            node.callee.name === "Number" ||
+            node.callee.name === "parseInt" ||
+            node.callee.name === "parseFloat"
+        )
+    );
+}
+
+/**
+ * Returns the first non-numeric operand in a BinaryExpression. Designed to be
+ * used from bottom to up since it walks up the BinaryExpression trees using
+ * node.parent to find the result.
+ * @param {BinaryExpression} node The BinaryExpression node to be walked up on
+ * @returns {ASTNode|null} The first non-numeric item in the BinaryExpression tree or null
+ */
+function getNonNumericOperand(node) {
+    const left = node.left,
+        right = node.right;
+
+    if (right.type !== "BinaryExpression" && !isNumeric(right)) {
+        return right;
+    }
+
+    if (left.type !== "BinaryExpression" && !isNumeric(left)) {
+        return left;
+    }
+
+    return null;
+}
+
+/**
+ * Checks whether an expression evaluates to a string.
+ * @param {ASTNode} node node that represents the expression to check.
+ * @returns {boolean} Whether or not the expression evaluates to a string.
+ */
+function isStringType(node) {
+    return astUtils.isStringLiteral(node) ||
+        (
+            node.type === "CallExpression" &&
+            node.callee.type === "Identifier" &&
+            node.callee.name === "String"
+        );
+}
+
+/**
+ * Checks whether a node is an empty string literal or not.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} Whether or not the passed in node is an
+ * empty string literal or not.
+ */
+function isEmptyString(node) {
+    return astUtils.isStringLiteral(node) && (node.value === "" || (node.type === "TemplateLiteral" && node.quasis.length === 1 && node.quasis[0].value.cooked === ""));
+}
+
+/**
+ * Checks whether or not a node is a concatenating with an empty string.
+ * @param {ASTNode} node A BinaryExpression node to check.
+ * @returns {boolean} Whether or not the node is a concatenating with an empty string.
+ */
+function isConcatWithEmptyString(node) {
+    return node.operator === "+" && (
+        (isEmptyString(node.left) && !isStringType(node.right)) ||
+        (isEmptyString(node.right) && !isStringType(node.left))
+    );
+}
+
+/**
+ * Checks whether or not a node is appended with an empty string.
+ * @param {ASTNode} node An AssignmentExpression node to check.
+ * @returns {boolean} Whether or not the node is appended with an empty string.
+ */
+function isAppendEmptyString(node) {
+    return node.operator === "+=" && isEmptyString(node.right);
+}
+
+/**
+ * Returns the operand that is not an empty string from a flagged BinaryExpression.
+ * @param {ASTNode} node The flagged BinaryExpression node to check.
+ * @returns {ASTNode} The operand that is not an empty string from a flagged BinaryExpression.
+ */
+function getNonEmptyOperand(node) {
+    return isEmptyString(node.left) ? node.right : node.left;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow shorthand type conversions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-implicit-coercion"
+        },
+
+        fixable: "code",
+
+        schema: [{
+            type: "object",
+            properties: {
+                boolean: {
+                    type: "boolean",
+                    default: true
+                },
+                number: {
+                    type: "boolean",
+                    default: true
+                },
+                string: {
+                    type: "boolean",
+                    default: true
+                },
+                disallowTemplateShorthand: {
+                    type: "boolean",
+                    default: false
+                },
+                allow: {
+                    type: "array",
+                    items: {
+                        enum: ALLOWABLE_OPERATORS
+                    },
+                    uniqueItems: true
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            useRecommendation: "use `{{recommendation}}` instead."
+        }
+    },
+
+    create(context) {
+        const options = parseOptions(context.options[0] || {});
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Reports an error and autofixes the node
+         * @param {ASTNode} node An ast node to report the error on.
+         * @param {string} recommendation The recommended code for the issue
+         * @param {bool} shouldFix Whether this report should fix the node
+         * @returns {void}
+         */
+        function report(node, recommendation, shouldFix) {
+            context.report({
+                node,
+                messageId: "useRecommendation",
+                data: {
+                    recommendation
+                },
+                fix(fixer) {
+                    if (!shouldFix) {
+                        return null;
+                    }
+
+                    const tokenBefore = sourceCode.getTokenBefore(node);
+
+                    if (
+                        tokenBefore &&
+                        tokenBefore.range[1] === node.range[0] &&
+                        !astUtils.canTokensBeAdjacent(tokenBefore, recommendation)
+                    ) {
+                        return fixer.replaceText(node, ` ${recommendation}`);
+                    }
+                    return fixer.replaceText(node, recommendation);
+                }
+            });
+        }
+
+        return {
+            UnaryExpression(node) {
+                let operatorAllowed;
+
+                // !!foo
+                operatorAllowed = options.allow.includes("!!");
+                if (!operatorAllowed && options.boolean && isDoubleLogicalNegating(node)) {
+                    const recommendation = `Boolean(${sourceCode.getText(node.argument.argument)})`;
+
+                    report(node, recommendation, true);
+                }
+
+                // ~foo.indexOf(bar)
+                operatorAllowed = options.allow.includes("~");
+                if (!operatorAllowed && options.boolean && isBinaryNegatingOfIndexOf(node)) {
+
+                    // `foo?.indexOf(bar) !== -1` will be true (== found) if the `foo` is nullish. So use `>= 0` in that case.
+                    const comparison = node.argument.type === "ChainExpression" ? ">= 0" : "!== -1";
+                    const recommendation = `${sourceCode.getText(node.argument)} ${comparison}`;
+
+                    report(node, recommendation, false);
+                }
+
+                // +foo
+                operatorAllowed = options.allow.includes("+");
+                if (!operatorAllowed && options.number && node.operator === "+" && !isNumeric(node.argument)) {
+                    const recommendation = `Number(${sourceCode.getText(node.argument)})`;
+
+                    report(node, recommendation, true);
+                }
+            },
+
+            // Use `:exit` to prevent double reporting
+            "BinaryExpression:exit"(node) {
+                let operatorAllowed;
+
+                // 1 * foo
+                operatorAllowed = options.allow.includes("*");
+                const nonNumericOperand = !operatorAllowed && options.number && isMultiplyByOne(node) && !isMultiplyByFractionOfOne(node, sourceCode) &&
+                    getNonNumericOperand(node);
+
+                if (nonNumericOperand) {
+                    const recommendation = `Number(${sourceCode.getText(nonNumericOperand)})`;
+
+                    report(node, recommendation, true);
+                }
+
+                // "" + foo
+                operatorAllowed = options.allow.includes("+");
+                if (!operatorAllowed && options.string && isConcatWithEmptyString(node)) {
+                    const recommendation = `String(${sourceCode.getText(getNonEmptyOperand(node))})`;
+
+                    report(node, recommendation, true);
+                }
+            },
+
+            AssignmentExpression(node) {
+
+                // foo += ""
+                const operatorAllowed = options.allow.includes("+");
+
+                if (!operatorAllowed && options.string && isAppendEmptyString(node)) {
+                    const code = sourceCode.getText(getNonEmptyOperand(node));
+                    const recommendation = `${code} = String(${code})`;
+
+                    report(node, recommendation, true);
+                }
+            },
+
+            TemplateLiteral(node) {
+                if (!options.disallowTemplateShorthand) {
+                    return;
+                }
+
+                // tag`${foo}`
+                if (node.parent.type === "TaggedTemplateExpression") {
+                    return;
+                }
+
+                // `` or `${foo}${bar}`
+                if (node.expressions.length !== 1) {
+                    return;
+                }
+
+
+                //  `prefix${foo}`
+                if (node.quasis[0].value.cooked !== "") {
+                    return;
+                }
+
+                //  `${foo}postfix`
+                if (node.quasis[1].value.cooked !== "") {
+                    return;
+                }
+
+                // if the expression is already a string, then this isn't a coercion
+                if (isStringType(node.expressions[0])) {
+                    return;
+                }
+
+                const code = sourceCode.getText(node.expressions[0]);
+                const recommendation = `String(${code})`;
+
+                report(node, recommendation, true);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-implicit-globals.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-implicit-globals.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-implicit-globals.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,146 @@
+/**
+ * @fileoverview Rule to check for implicit global variables, functions and classes.
+ * @author Joshua Peek
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow declarations in the global scope",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-implicit-globals"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                lexicalBindings: {
+                    type: "boolean",
+                    default: false
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            globalNonLexicalBinding: "Unexpected {{kind}} declaration in the global scope, wrap in an IIFE for a local variable, assign as global property for a global variable.",
+            globalLexicalBinding: "Unexpected {{kind}} declaration in the global scope, wrap in a block or in an IIFE.",
+            globalVariableLeak: "Global variable leak, declare the variable if it is intended to be local.",
+            assignmentToReadonlyGlobal: "Unexpected assignment to read-only global variable.",
+            redeclarationOfReadonlyGlobal: "Unexpected redeclaration of read-only global variable."
+        }
+    },
+
+    create(context) {
+
+        const checkLexicalBindings = context.options[0] && context.options[0].lexicalBindings === true;
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Reports the node.
+         * @param {ASTNode} node Node to report.
+         * @param {string} messageId Id of the message to report.
+         * @param {string|undefined} kind Declaration kind, can be 'var', 'const', 'let', function or class.
+         * @returns {void}
+         */
+        function report(node, messageId, kind) {
+            context.report({
+                node,
+                messageId,
+                data: {
+                    kind
+                }
+            });
+        }
+
+        return {
+            Program(node) {
+                const scope = sourceCode.getScope(node);
+
+                scope.variables.forEach(variable => {
+
+                    // Only ESLint global variables have the `writable` key.
+                    const isReadonlyEslintGlobalVariable = variable.writeable === false;
+                    const isWritableEslintGlobalVariable = variable.writeable === true;
+
+                    if (isWritableEslintGlobalVariable) {
+
+                        // Everything is allowed with writable ESLint global variables.
+                        return;
+                    }
+
+                    // Variables exported by "exported" block comments
+                    if (variable.eslintExported) {
+                        return;
+                    }
+
+                    variable.defs.forEach(def => {
+                        const defNode = def.node;
+
+                        if (def.type === "FunctionName" || (def.type === "Variable" && def.parent.kind === "var")) {
+                            if (isReadonlyEslintGlobalVariable) {
+                                report(defNode, "redeclarationOfReadonlyGlobal");
+                            } else {
+                                report(
+                                    defNode,
+                                    "globalNonLexicalBinding",
+                                    def.type === "FunctionName" ? "function" : `'${def.parent.kind}'`
+                                );
+                            }
+                        }
+
+                        if (checkLexicalBindings) {
+                            if (def.type === "ClassName" ||
+                                    (def.type === "Variable" && (def.parent.kind === "let" || def.parent.kind === "const"))) {
+                                if (isReadonlyEslintGlobalVariable) {
+                                    report(defNode, "redeclarationOfReadonlyGlobal");
+                                } else {
+                                    report(
+                                        defNode,
+                                        "globalLexicalBinding",
+                                        def.type === "ClassName" ? "class" : `'${def.parent.kind}'`
+                                    );
+                                }
+                            }
+                        }
+                    });
+                });
+
+                // Undeclared assigned variables.
+                scope.implicit.variables.forEach(variable => {
+                    const scopeVariable = scope.set.get(variable.name);
+                    let messageId;
+
+                    if (scopeVariable) {
+
+                        // ESLint global variable
+                        if (scopeVariable.writeable) {
+                            return;
+                        }
+                        messageId = "assignmentToReadonlyGlobal";
+
+                    } else {
+
+                        // Reference to an unknown variable, possible global leak.
+                        messageId = "globalVariableLeak";
+                    }
+
+                    // def.node is an AssignmentExpression, ForInStatement or ForOfStatement.
+                    variable.defs.forEach(def => {
+                        report(def.node, messageId);
+                    });
+                });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-implied-eval.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-implied-eval.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-implied-eval.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,132 @@
+/**
+ * @fileoverview Rule to flag use of implied eval via setTimeout and setInterval
+ * @author James Allardice
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const { getStaticValue } = require("@eslint-community/eslint-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow the use of `eval()`-like methods",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-implied-eval"
+        },
+
+        schema: [],
+
+        messages: {
+            impliedEval: "Implied eval. Consider passing a function instead of a string."
+        }
+    },
+
+    create(context) {
+        const GLOBAL_CANDIDATES = Object.freeze(["global", "window", "globalThis"]);
+        const EVAL_LIKE_FUNC_PATTERN = /^(?:set(?:Interval|Timeout)|execScript)$/u;
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Checks whether a node is evaluated as a string or not.
+         * @param {ASTNode} node A node to check.
+         * @returns {boolean} True if the node is evaluated as a string.
+         */
+        function isEvaluatedString(node) {
+            if (
+                (node.type === "Literal" && typeof node.value === "string") ||
+                node.type === "TemplateLiteral"
+            ) {
+                return true;
+            }
+            if (node.type === "BinaryExpression" && node.operator === "+") {
+                return isEvaluatedString(node.left) || isEvaluatedString(node.right);
+            }
+            return false;
+        }
+
+        /**
+         * Reports if the `CallExpression` node has evaluated argument.
+         * @param {ASTNode} node A CallExpression to check.
+         * @returns {void}
+         */
+        function reportImpliedEvalCallExpression(node) {
+            const [firstArgument] = node.arguments;
+
+            if (firstArgument) {
+
+                const staticValue = getStaticValue(firstArgument, sourceCode.getScope(node));
+                const isStaticString = staticValue && typeof staticValue.value === "string";
+                const isString = isStaticString || isEvaluatedString(firstArgument);
+
+                if (isString) {
+                    context.report({
+                        node,
+                        messageId: "impliedEval"
+                    });
+                }
+            }
+
+        }
+
+        /**
+         * Reports calls of `implied eval` via the global references.
+         * @param {Variable} globalVar A global variable to check.
+         * @returns {void}
+         */
+        function reportImpliedEvalViaGlobal(globalVar) {
+            const { references, name } = globalVar;
+
+            references.forEach(ref => {
+                const identifier = ref.identifier;
+                let node = identifier.parent;
+
+                while (astUtils.isSpecificMemberAccess(node, null, name)) {
+                    node = node.parent;
+                }
+
+                if (astUtils.isSpecificMemberAccess(node, null, EVAL_LIKE_FUNC_PATTERN)) {
+                    const calleeNode = node.parent.type === "ChainExpression" ? node.parent : node;
+                    const parent = calleeNode.parent;
+
+                    if (parent.type === "CallExpression" && parent.callee === calleeNode) {
+                        reportImpliedEvalCallExpression(parent);
+                    }
+                }
+            });
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            CallExpression(node) {
+                if (astUtils.isSpecificId(node.callee, EVAL_LIKE_FUNC_PATTERN)) {
+                    reportImpliedEvalCallExpression(node);
+                }
+            },
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
+
+                GLOBAL_CANDIDATES
+                    .map(candidate => astUtils.getVariableByName(globalScope, candidate))
+                    .filter(globalVar => !!globalVar && globalVar.defs.length === 0)
+                    .forEach(reportImpliedEvalViaGlobal);
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-import-assign.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-import-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-import-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,241 @@
+/**
+ * @fileoverview Rule to flag updates of imported bindings.
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const { findVariable } = require("@eslint-community/eslint-utils");
+const astUtils = require("./utils/ast-utils");
+
+const WellKnownMutationFunctions = {
+    Object: /^(?:assign|definePropert(?:y|ies)|freeze|setPrototypeOf)$/u,
+    Reflect: /^(?:(?:define|delete)Property|set(?:PrototypeOf)?)$/u
+};
+
+/**
+ * Check if a given node is LHS of an assignment node.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is LHS.
+ */
+function isAssignmentLeft(node) {
+    const { parent } = node;
+
+    return (
+        (
+            parent.type === "AssignmentExpression" &&
+            parent.left === node
+        ) ||
+
+        // Destructuring assignments
+        parent.type === "ArrayPattern" ||
+        (
+            parent.type === "Property" &&
+            parent.value === node &&
+            parent.parent.type === "ObjectPattern"
+        ) ||
+        parent.type === "RestElement" ||
+        (
+            parent.type === "AssignmentPattern" &&
+            parent.left === node
+        )
+    );
+}
+
+/**
+ * Check if a given node is the operand of mutation unary operator.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is the operand of mutation unary operator.
+ */
+function isOperandOfMutationUnaryOperator(node) {
+    const argumentNode = node.parent.type === "ChainExpression"
+        ? node.parent
+        : node;
+    const { parent } = argumentNode;
+
+    return (
+        (
+            parent.type === "UpdateExpression" &&
+            parent.argument === argumentNode
+        ) ||
+        (
+            parent.type === "UnaryExpression" &&
+            parent.operator === "delete" &&
+            parent.argument === argumentNode
+        )
+    );
+}
+
+/**
+ * Check if a given node is the iteration variable of `for-in`/`for-of` syntax.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is the iteration variable.
+ */
+function isIterationVariable(node) {
+    const { parent } = node;
+
+    return (
+        (
+            parent.type === "ForInStatement" &&
+            parent.left === node
+        ) ||
+        (
+            parent.type === "ForOfStatement" &&
+            parent.left === node
+        )
+    );
+}
+
+/**
+ * Check if a given node is at the first argument of a well-known mutation function.
+ * - `Object.assign`
+ * - `Object.defineProperty`
+ * - `Object.defineProperties`
+ * - `Object.freeze`
+ * - `Object.setPrototypeOf`
+ * - `Reflect.defineProperty`
+ * - `Reflect.deleteProperty`
+ * - `Reflect.set`
+ * - `Reflect.setPrototypeOf`
+ * @param {ASTNode} node The node to check.
+ * @param {Scope} scope A `escope.Scope` object to find variable (whichever).
+ * @returns {boolean} `true` if the node is at the first argument of a well-known mutation function.
+ */
+function isArgumentOfWellKnownMutationFunction(node, scope) {
+    const { parent } = node;
+
+    if (parent.type !== "CallExpression" || parent.arguments[0] !== node) {
+        return false;
+    }
+    const callee = astUtils.skipChainExpression(parent.callee);
+
+    if (
+        !astUtils.isSpecificMemberAccess(callee, "Object", WellKnownMutationFunctions.Object) &&
+        !astUtils.isSpecificMemberAccess(callee, "Reflect", WellKnownMutationFunctions.Reflect)
+    ) {
+        return false;
+    }
+    const variable = findVariable(scope, callee.object);
+
+    return variable !== null && variable.scope.type === "global";
+}
+
+/**
+ * Check if the identifier node is placed at to update members.
+ * @param {ASTNode} id The Identifier node to check.
+ * @param {Scope} scope A `escope.Scope` object to find variable (whichever).
+ * @returns {boolean} `true` if the member of `id` was updated.
+ */
+function isMemberWrite(id, scope) {
+    const { parent } = id;
+
+    return (
+        (
+            parent.type === "MemberExpression" &&
+            parent.object === id &&
+            (
+                isAssignmentLeft(parent) ||
+                isOperandOfMutationUnaryOperator(parent) ||
+                isIterationVariable(parent)
+            )
+        ) ||
+        isArgumentOfWellKnownMutationFunction(id, scope)
+    );
+}
+
+/**
+ * Get the mutation node.
+ * @param {ASTNode} id The Identifier node to get.
+ * @returns {ASTNode} The mutation node.
+ */
+function getWriteNode(id) {
+    let node = id.parent;
+
+    while (
+        node &&
+        node.type !== "AssignmentExpression" &&
+        node.type !== "UpdateExpression" &&
+        node.type !== "UnaryExpression" &&
+        node.type !== "CallExpression" &&
+        node.type !== "ForInStatement" &&
+        node.type !== "ForOfStatement"
+    ) {
+        node = node.parent;
+    }
+
+    return node || id;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow assigning to imported bindings",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-import-assign"
+        },
+
+        schema: [],
+
+        messages: {
+            readonly: "'{{name}}' is read-only.",
+            readonlyMember: "The members of '{{name}}' are read-only."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        return {
+            ImportDeclaration(node) {
+                const scope = sourceCode.getScope(node);
+
+                for (const variable of sourceCode.getDeclaredVariables(node)) {
+                    const shouldCheckMembers = variable.defs.some(
+                        d => d.node.type === "ImportNamespaceSpecifier"
+                    );
+                    let prevIdNode = null;
+
+                    for (const reference of variable.references) {
+                        const idNode = reference.identifier;
+
+                        /*
+                         * AssignmentPattern (e.g. `[a = 0] = b`) makes two write
+                         * references for the same identifier. This should skip
+                         * the one of the two in order to prevent redundant reports.
+                         */
+                        if (idNode === prevIdNode) {
+                            continue;
+                        }
+                        prevIdNode = idNode;
+
+                        if (reference.isWrite()) {
+                            context.report({
+                                node: getWriteNode(idNode),
+                                messageId: "readonly",
+                                data: { name: idNode.name }
+                            });
+                        } else if (shouldCheckMembers && isMemberWrite(idNode, scope)) {
+                            context.report({
+                                node: getWriteNode(idNode),
+                                messageId: "readonlyMember",
+                                data: { name: idNode.name }
+                            });
+                        }
+                    }
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-inline-comments.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-inline-comments.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-inline-comments.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,110 @@
+/**
+ * @fileoverview Enforces or disallows inline comments.
+ * @author Greg Cochard
+ */
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow inline comments after code",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-inline-comments"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    ignorePattern: {
+                        type: "string"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedInlineComment: "Unexpected comment inline with code."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const options = context.options[0];
+        let customIgnoreRegExp;
+
+        if (options && options.ignorePattern) {
+            customIgnoreRegExp = new RegExp(options.ignorePattern, "u");
+        }
+
+        /**
+         * Will check that comments are not on lines starting with or ending with code
+         * @param {ASTNode} node The comment node to check
+         * @private
+         * @returns {void}
+         */
+        function testCodeAroundComment(node) {
+
+            const startLine = String(sourceCode.lines[node.loc.start.line - 1]),
+                endLine = String(sourceCode.lines[node.loc.end.line - 1]),
+                preamble = startLine.slice(0, node.loc.start.column).trim(),
+                postamble = endLine.slice(node.loc.end.column).trim(),
+                isPreambleEmpty = !preamble,
+                isPostambleEmpty = !postamble;
+
+            // Nothing on both sides
+            if (isPreambleEmpty && isPostambleEmpty) {
+                return;
+            }
+
+            // Matches the ignore pattern
+            if (customIgnoreRegExp && customIgnoreRegExp.test(node.value)) {
+                return;
+            }
+
+            // JSX Exception
+            if (
+                (isPreambleEmpty || preamble === "{") &&
+                (isPostambleEmpty || postamble === "}")
+            ) {
+                const enclosingNode = sourceCode.getNodeByRangeIndex(node.range[0]);
+
+                if (enclosingNode && enclosingNode.type === "JSXEmptyExpression") {
+                    return;
+                }
+            }
+
+            // Don't report ESLint directive comments
+            if (astUtils.isDirectiveComment(node)) {
+                return;
+            }
+
+            context.report({
+                node,
+                messageId: "unexpectedInlineComment"
+            });
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program() {
+                sourceCode.getAllComments()
+                    .filter(token => token.type !== "Shebang")
+                    .forEach(testCodeAroundComment);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-inner-declarations.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-inner-declarations.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-inner-declarations.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,110 @@
+/**
+ * @fileoverview Rule to enforce declarations in program or function body root.
+ * @author Brandon Mills
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const validParent = new Set(["Program", "StaticBlock", "ExportNamedDeclaration", "ExportDefaultDeclaration"]);
+const validBlockStatementParent = new Set(["FunctionDeclaration", "FunctionExpression", "ArrowFunctionExpression"]);
+
+/**
+ * Finds the nearest enclosing context where this rule allows declarations and returns its description.
+ * @param {ASTNode} node Node to search from.
+ * @returns {string} Description. One of "program", "function body", "class static block body".
+ */
+function getAllowedBodyDescription(node) {
+    let { parent } = node;
+
+    while (parent) {
+
+        if (parent.type === "StaticBlock") {
+            return "class static block body";
+        }
+
+        if (astUtils.isFunction(parent)) {
+            return "function body";
+        }
+
+        ({ parent } = parent);
+    }
+
+    return "program";
+}
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow variable or `function` declarations in nested blocks",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-inner-declarations"
+        },
+
+        schema: [
+            {
+                enum: ["functions", "both"]
+            }
+        ],
+
+        messages: {
+            moveDeclToRoot: "Move {{type}} declaration to {{body}} root."
+        }
+    },
+
+    create(context) {
+
+        /**
+         * Ensure that a given node is at a program or function body's root.
+         * @param {ASTNode} node Declaration node to check.
+         * @returns {void}
+         */
+        function check(node) {
+            const parent = node.parent;
+
+            if (
+                parent.type === "BlockStatement" && validBlockStatementParent.has(parent.parent.type)
+            ) {
+                return;
+            }
+
+            if (validParent.has(parent.type)) {
+                return;
+            }
+
+            context.report({
+                node,
+                messageId: "moveDeclToRoot",
+                data: {
+                    type: (node.type === "FunctionDeclaration" ? "function" : "variable"),
+                    body: getAllowedBodyDescription(node)
+                }
+            });
+        }
+
+
+        return {
+
+            FunctionDeclaration: check,
+            VariableDeclaration(node) {
+                if (context.options[0] === "both" && node.kind === "var") {
+                    check(node);
+                }
+            }
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-invalid-regexp.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-invalid-regexp.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-invalid-regexp.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,194 @@
+/**
+ * @fileoverview Validate strings passed to the RegExp constructor
+ * @author Michael Ficarra
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const RegExpValidator = require("@eslint-community/regexpp").RegExpValidator;
+const validator = new RegExpValidator();
+const validFlags = /[dgimsuvy]/gu;
+const undefined1 = void 0;
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow invalid regular expression strings in `RegExp` constructors",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-invalid-regexp"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                allowConstructorFlags: {
+                    type: "array",
+                    items: {
+                        type: "string"
+                    }
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            regexMessage: "{{message}}."
+        }
+    },
+
+    create(context) {
+
+        const options = context.options[0];
+        let allowedFlags = null;
+
+        if (options && options.allowConstructorFlags) {
+            const temp = options.allowConstructorFlags.join("").replace(validFlags, "");
+
+            if (temp) {
+                allowedFlags = new RegExp(`[${temp}]`, "giu");
+            }
+        }
+
+        /**
+         * Reports error with the provided message.
+         * @param {ASTNode} node The node holding the invalid RegExp
+         * @param {string} message The message to report.
+         * @returns {void}
+         */
+        function report(node, message) {
+            context.report({
+                node,
+                messageId: "regexMessage",
+                data: { message }
+            });
+        }
+
+        /**
+         * Check if node is a string
+         * @param {ASTNode} node node to evaluate
+         * @returns {boolean} True if its a string
+         * @private
+         */
+        function isString(node) {
+            return node && node.type === "Literal" && typeof node.value === "string";
+        }
+
+        /**
+         * Gets flags of a regular expression created by the given `RegExp()` or `new RegExp()` call
+         * Examples:
+         *     new RegExp(".")         // => ""
+         *     new RegExp(".", "gu")   // => "gu"
+         *     new RegExp(".", flags)  // => null
+         * @param {ASTNode} node `CallExpression` or `NewExpression` node
+         * @returns {string|null} flags if they can be determined, `null` otherwise
+         * @private
+         */
+        function getFlags(node) {
+            if (node.arguments.length < 2) {
+                return "";
+            }
+
+            if (isString(node.arguments[1])) {
+                return node.arguments[1].value;
+            }
+
+            return null;
+        }
+
+        /**
+         * Check syntax error in a given pattern.
+         * @param {string} pattern The RegExp pattern to validate.
+         * @param {Object} flags The RegExp flags to validate.
+         * @param {boolean} [flags.unicode] The Unicode flag.
+         * @param {boolean} [flags.unicodeSets] The UnicodeSets flag.
+         * @returns {string|null} The syntax error.
+         */
+        function validateRegExpPattern(pattern, flags) {
+            try {
+                validator.validatePattern(pattern, undefined1, undefined1, flags);
+                return null;
+            } catch (err) {
+                return err.message;
+            }
+        }
+
+        /**
+         * Check syntax error in a given flags.
+         * @param {string|null} flags The RegExp flags to validate.
+         * @returns {string|null} The syntax error.
+         */
+        function validateRegExpFlags(flags) {
+            if (!flags) {
+                return null;
+            }
+            try {
+                validator.validateFlags(flags);
+            } catch {
+                return `Invalid flags supplied to RegExp constructor '${flags}'`;
+            }
+
+            /*
+             * `regexpp` checks the combination of `u` and `v` flags when parsing `Pattern` according to `ecma262`,
+             * but this rule may check only the flag when the pattern is unidentifiable, so check it here.
+             * https://tc39.es/ecma262/multipage/text-processing.html#sec-parsepattern
+             */
+            if (flags.includes("u") && flags.includes("v")) {
+                return "Regex 'u' and 'v' flags cannot be used together";
+            }
+            return null;
+        }
+
+        return {
+            "CallExpression, NewExpression"(node) {
+                if (node.callee.type !== "Identifier" || node.callee.name !== "RegExp") {
+                    return;
+                }
+
+                let flags = getFlags(node);
+
+                if (flags && allowedFlags) {
+                    flags = flags.replace(allowedFlags, "");
+                }
+
+                let message = validateRegExpFlags(flags);
+
+                if (message) {
+                    report(node, message);
+                    return;
+                }
+
+                if (!isString(node.arguments[0])) {
+                    return;
+                }
+
+                const pattern = node.arguments[0].value;
+
+                message = (
+
+                    // If flags are unknown, report the regex only if its pattern is invalid both with and without the "u" flag
+                    flags === null
+                        ? (
+                            validateRegExpPattern(pattern, { unicode: true, unicodeSets: false }) &&
+                            validateRegExpPattern(pattern, { unicode: false, unicodeSets: true }) &&
+                            validateRegExpPattern(pattern, { unicode: false, unicodeSets: false })
+                        )
+                        : validateRegExpPattern(pattern, { unicode: flags.includes("u"), unicodeSets: flags.includes("v") })
+                );
+
+                if (message) {
+                    report(node, message);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-invalid-this.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-invalid-this.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-invalid-this.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,150 @@
+/**
+ * @fileoverview A rule to disallow `this` keywords in contexts where the value of `this` is `undefined`.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines if the given code path is a code path with lexical `this` binding.
+ * That is, if `this` within the code path refers to `this` of surrounding code path.
+ * @param {CodePath} codePath Code path.
+ * @param {ASTNode} node Node that started the code path.
+ * @returns {boolean} `true` if it is a code path with lexical `this` binding.
+ */
+function isCodePathWithLexicalThis(codePath, node) {
+    return codePath.origin === "function" && node.type === "ArrowFunctionExpression";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow use of `this` in contexts where the value of `this` is `undefined`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-invalid-this"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    capIsConstructor: {
+                        type: "boolean",
+                        default: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedThis: "Unexpected 'this'."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const capIsConstructor = options.capIsConstructor !== false;
+        const stack = [],
+            sourceCode = context.sourceCode;
+
+        /**
+         * Gets the current checking context.
+         *
+         * The return value has a flag that whether or not `this` keyword is valid.
+         * The flag is initialized when got at the first time.
+         * @returns {{valid: boolean}}
+         *   an object which has a flag that whether or not `this` keyword is valid.
+         */
+        stack.getCurrent = function() {
+            const current = this[this.length - 1];
+
+            if (!current.init) {
+                current.init = true;
+                current.valid = !astUtils.isDefaultThisBinding(
+                    current.node,
+                    sourceCode,
+                    { capIsConstructor }
+                );
+            }
+            return current;
+        };
+
+        return {
+
+            onCodePathStart(codePath, node) {
+                if (isCodePathWithLexicalThis(codePath, node)) {
+                    return;
+                }
+
+                if (codePath.origin === "program") {
+                    const scope = sourceCode.getScope(node);
+                    const features = context.languageOptions.parserOptions.ecmaFeatures || {};
+
+                    // `this` at the top level of scripts always refers to the global object
+                    stack.push({
+                        init: true,
+                        node,
+                        valid: !(
+                            node.sourceType === "module" ||
+                            (features.globalReturn && scope.childScopes[0].isStrict)
+                        )
+                    });
+
+                    return;
+                }
+
+                /*
+                 * `init: false` means that `valid` isn't determined yet.
+                 * Most functions don't use `this`, and the calculation for `valid`
+                 * is relatively costly, so we'll calculate it lazily when the first
+                 * `this` within the function is traversed. A special case are non-strict
+                 * functions, because `this` refers to the global object and therefore is
+                 * always valid, so we can set `init: true` right away.
+                 */
+                stack.push({
+                    init: !sourceCode.getScope(node).isStrict,
+                    node,
+                    valid: true
+                });
+            },
+
+            onCodePathEnd(codePath, node) {
+                if (isCodePathWithLexicalThis(codePath, node)) {
+                    return;
+                }
+
+                stack.pop();
+            },
+
+            // Reports if `this` of the current context is invalid.
+            ThisExpression(node) {
+                const current = stack.getCurrent();
+
+                if (current && !current.valid) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedThis"
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-irregular-whitespace.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-irregular-whitespace.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-irregular-whitespace.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,276 @@
+/**
+ * @fileoverview Rule to disallow whitespace that is not a tab or space, whitespace inside strings and comments are allowed
+ * @author Jonathan Kingston
+ * @author Christophe Porteneuve
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const ALL_IRREGULARS = /[\f\v\u0085\ufeff\u00a0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b\u202f\u205f\u3000\u2028\u2029]/u;
+const IRREGULAR_WHITESPACE = /[\f\v\u0085\ufeff\u00a0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u200b\u202f\u205f\u3000]+/mgu;
+const IRREGULAR_LINE_TERMINATORS = /[\u2028\u2029]/mgu;
+const LINE_BREAK = astUtils.createGlobalLinebreakMatcher();
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow irregular whitespace",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-irregular-whitespace"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    skipComments: {
+                        type: "boolean",
+                        default: false
+                    },
+                    skipStrings: {
+                        type: "boolean",
+                        default: true
+                    },
+                    skipTemplates: {
+                        type: "boolean",
+                        default: false
+                    },
+                    skipRegExps: {
+                        type: "boolean",
+                        default: false
+                    },
+                    skipJSXText: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            noIrregularWhitespace: "Irregular whitespace not allowed."
+        }
+    },
+
+    create(context) {
+
+        // Module store of errors that we have found
+        let errors = [];
+
+        // Lookup the `skipComments` option, which defaults to `false`.
+        const options = context.options[0] || {};
+        const skipComments = !!options.skipComments;
+        const skipStrings = options.skipStrings !== false;
+        const skipRegExps = !!options.skipRegExps;
+        const skipTemplates = !!options.skipTemplates;
+        const skipJSXText = !!options.skipJSXText;
+
+        const sourceCode = context.sourceCode;
+        const commentNodes = sourceCode.getAllComments();
+
+        /**
+         * Removes errors that occur inside the given node
+         * @param {ASTNode} node to check for matching errors.
+         * @returns {void}
+         * @private
+         */
+        function removeWhitespaceError(node) {
+            const locStart = node.loc.start;
+            const locEnd = node.loc.end;
+
+            errors = errors.filter(({ loc: { start: errorLocStart } }) => (
+                errorLocStart.line < locStart.line ||
+                errorLocStart.line === locStart.line && errorLocStart.column < locStart.column ||
+                errorLocStart.line === locEnd.line && errorLocStart.column >= locEnd.column ||
+                errorLocStart.line > locEnd.line
+            ));
+        }
+
+        /**
+         * Checks literal nodes for errors that we are choosing to ignore and calls the relevant methods to remove the errors
+         * @param {ASTNode} node to check for matching errors.
+         * @returns {void}
+         * @private
+         */
+        function removeInvalidNodeErrorsInLiteral(node) {
+            const shouldCheckStrings = skipStrings && (typeof node.value === "string");
+            const shouldCheckRegExps = skipRegExps && Boolean(node.regex);
+
+            if (shouldCheckStrings || shouldCheckRegExps) {
+
+                // If we have irregular characters remove them from the errors list
+                if (ALL_IRREGULARS.test(node.raw)) {
+                    removeWhitespaceError(node);
+                }
+            }
+        }
+
+        /**
+         * Checks template string literal nodes for errors that we are choosing to ignore and calls the relevant methods to remove the errors
+         * @param {ASTNode} node to check for matching errors.
+         * @returns {void}
+         * @private
+         */
+        function removeInvalidNodeErrorsInTemplateLiteral(node) {
+            if (typeof node.value.raw === "string") {
+                if (ALL_IRREGULARS.test(node.value.raw)) {
+                    removeWhitespaceError(node);
+                }
+            }
+        }
+
+        /**
+         * Checks comment nodes for errors that we are choosing to ignore and calls the relevant methods to remove the errors
+         * @param {ASTNode} node to check for matching errors.
+         * @returns {void}
+         * @private
+         */
+        function removeInvalidNodeErrorsInComment(node) {
+            if (ALL_IRREGULARS.test(node.value)) {
+                removeWhitespaceError(node);
+            }
+        }
+
+        /**
+         * Checks JSX nodes for errors that we are choosing to ignore and calls the relevant methods to remove the errors
+         * @param {ASTNode} node to check for matching errors.
+         * @returns {void}
+         * @private
+         */
+        function removeInvalidNodeErrorsInJSXText(node) {
+            if (ALL_IRREGULARS.test(node.raw)) {
+                removeWhitespaceError(node);
+            }
+        }
+
+        /**
+         * Checks the program source for irregular whitespace
+         * @param {ASTNode} node The program node
+         * @returns {void}
+         * @private
+         */
+        function checkForIrregularWhitespace(node) {
+            const sourceLines = sourceCode.lines;
+
+            sourceLines.forEach((sourceLine, lineIndex) => {
+                const lineNumber = lineIndex + 1;
+                let match;
+
+                while ((match = IRREGULAR_WHITESPACE.exec(sourceLine)) !== null) {
+                    errors.push({
+                        node,
+                        messageId: "noIrregularWhitespace",
+                        loc: {
+                            start: {
+                                line: lineNumber,
+                                column: match.index
+                            },
+                            end: {
+                                line: lineNumber,
+                                column: match.index + match[0].length
+                            }
+                        }
+                    });
+                }
+            });
+        }
+
+        /**
+         * Checks the program source for irregular line terminators
+         * @param {ASTNode} node The program node
+         * @returns {void}
+         * @private
+         */
+        function checkForIrregularLineTerminators(node) {
+            const source = sourceCode.getText(),
+                sourceLines = sourceCode.lines,
+                linebreaks = source.match(LINE_BREAK);
+            let lastLineIndex = -1,
+                match;
+
+            while ((match = IRREGULAR_LINE_TERMINATORS.exec(source)) !== null) {
+                const lineIndex = linebreaks.indexOf(match[0], lastLineIndex + 1) || 0;
+
+                errors.push({
+                    node,
+                    messageId: "noIrregularWhitespace",
+                    loc: {
+                        start: {
+                            line: lineIndex + 1,
+                            column: sourceLines[lineIndex].length
+                        },
+                        end: {
+                            line: lineIndex + 2,
+                            column: 0
+                        }
+                    }
+                });
+
+                lastLineIndex = lineIndex;
+            }
+        }
+
+        /**
+         * A no-op function to act as placeholder for comment accumulation when the `skipComments` option is `false`.
+         * @returns {void}
+         * @private
+         */
+        function noop() {}
+
+        const nodes = {};
+
+        if (ALL_IRREGULARS.test(sourceCode.getText())) {
+            nodes.Program = function(node) {
+
+                /*
+                 * As we can easily fire warnings for all white space issues with
+                 * all the source its simpler to fire them here.
+                 * This means we can check all the application code without having
+                 * to worry about issues caused in the parser tokens.
+                 * When writing this code also evaluating per node was missing out
+                 * connecting tokens in some cases.
+                 * We can later filter the errors when they are found to be not an
+                 * issue in nodes we don't care about.
+                 */
+                checkForIrregularWhitespace(node);
+                checkForIrregularLineTerminators(node);
+            };
+
+            nodes.Literal = removeInvalidNodeErrorsInLiteral;
+            nodes.TemplateElement = skipTemplates ? removeInvalidNodeErrorsInTemplateLiteral : noop;
+            nodes.JSXText = skipJSXText ? removeInvalidNodeErrorsInJSXText : noop;
+            nodes["Program:exit"] = function() {
+                if (skipComments) {
+
+                    // First strip errors occurring in comment nodes.
+                    commentNodes.forEach(removeInvalidNodeErrorsInComment);
+                }
+
+                // If we have any errors remaining report on them
+                errors.forEach(error => context.report(error));
+            };
+        } else {
+            nodes.Program = noop;
+        }
+
+        return nodes;
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-iterator.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-iterator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-iterator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,52 @@
+/**
+ * @fileoverview Rule to flag usage of __iterator__ property
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { getStaticPropertyName } = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow the use of the `__iterator__` property",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-iterator"
+        },
+
+        schema: [],
+
+        messages: {
+            noIterator: "Reserved name '__iterator__'."
+        }
+    },
+
+    create(context) {
+
+        return {
+
+            MemberExpression(node) {
+
+                if (getStaticPropertyName(node) === "__iterator__") {
+                    context.report({
+                        node,
+                        messageId: "noIterator"
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-label-var.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-label-var.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-label-var.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,80 @@
+/**
+ * @fileoverview Rule to flag labels that are the same as an identifier
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow labels that share a name with a variable",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-label-var"
+        },
+
+        schema: [],
+
+        messages: {
+            identifierClashWithLabel: "Found identifier with same name as label."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Check if the identifier is present inside current scope
+         * @param {Object} scope current scope
+         * @param {string} name To evaluate
+         * @returns {boolean} True if its present
+         * @private
+         */
+        function findIdentifier(scope, name) {
+            return astUtils.getVariableByName(scope, name) !== null;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+
+            LabeledStatement(node) {
+
+                // Fetch the innermost scope.
+                const scope = sourceCode.getScope(node);
+
+                /*
+                 * Recursively find the identifier walking up the scope, starting
+                 * with the innermost scope.
+                 */
+                if (findIdentifier(scope, node.label.name)) {
+                    context.report({
+                        node,
+                        messageId: "identifierClashWithLabel"
+                    });
+                }
+            }
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-labels.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-labels.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-labels.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,149 @@
+/**
+ * @fileoverview Disallow Labeled Statements
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow labeled statements",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-labels"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowLoop: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowSwitch: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedLabel: "Unexpected labeled statement.",
+            unexpectedLabelInBreak: "Unexpected label in break statement.",
+            unexpectedLabelInContinue: "Unexpected label in continue statement."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0];
+        const allowLoop = options && options.allowLoop;
+        const allowSwitch = options && options.allowSwitch;
+        let scopeInfo = null;
+
+        /**
+         * Gets the kind of a given node.
+         * @param {ASTNode} node A node to get.
+         * @returns {string} The kind of the node.
+         */
+        function getBodyKind(node) {
+            if (astUtils.isLoop(node)) {
+                return "loop";
+            }
+            if (node.type === "SwitchStatement") {
+                return "switch";
+            }
+            return "other";
+        }
+
+        /**
+         * Checks whether the label of a given kind is allowed or not.
+         * @param {string} kind A kind to check.
+         * @returns {boolean} `true` if the kind is allowed.
+         */
+        function isAllowed(kind) {
+            switch (kind) {
+                case "loop": return allowLoop;
+                case "switch": return allowSwitch;
+                default: return false;
+            }
+        }
+
+        /**
+         * Checks whether a given name is a label of a loop or not.
+         * @param {string} label A name of a label to check.
+         * @returns {boolean} `true` if the name is a label of a loop.
+         */
+        function getKind(label) {
+            let info = scopeInfo;
+
+            while (info) {
+                if (info.label === label) {
+                    return info.kind;
+                }
+                info = info.upper;
+            }
+
+            /* c8 ignore next */
+            return "other";
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            LabeledStatement(node) {
+                scopeInfo = {
+                    label: node.label.name,
+                    kind: getBodyKind(node.body),
+                    upper: scopeInfo
+                };
+            },
+
+            "LabeledStatement:exit"(node) {
+                if (!isAllowed(scopeInfo.kind)) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedLabel"
+                    });
+                }
+
+                scopeInfo = scopeInfo.upper;
+            },
+
+            BreakStatement(node) {
+                if (node.label && !isAllowed(getKind(node.label.name))) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedLabelInBreak"
+                    });
+                }
+            },
+
+            ContinueStatement(node) {
+                if (node.label && !isAllowed(getKind(node.label.name))) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedLabelInContinue"
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-lone-blocks.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-lone-blocks.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-lone-blocks.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,136 @@
+/**
+ * @fileoverview Rule to flag blocks with no reason to exist
+ * @author Brandon Mills
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow unnecessary nested blocks",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-lone-blocks"
+        },
+
+        schema: [],
+
+        messages: {
+            redundantBlock: "Block is redundant.",
+            redundantNestedBlock: "Nested block is redundant."
+        }
+    },
+
+    create(context) {
+
+        // A stack of lone blocks to be checked for block-level bindings
+        const loneBlocks = [];
+        let ruleDef;
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Reports a node as invalid.
+         * @param {ASTNode} node The node to be reported.
+         * @returns {void}
+         */
+        function report(node) {
+            const messageId = node.parent.type === "BlockStatement" || node.parent.type === "StaticBlock"
+                ? "redundantNestedBlock"
+                : "redundantBlock";
+
+            context.report({
+                node,
+                messageId
+            });
+        }
+
+        /**
+         * Checks for any occurrence of a BlockStatement in a place where lists of statements can appear
+         * @param {ASTNode} node The node to check
+         * @returns {boolean} True if the node is a lone block.
+         */
+        function isLoneBlock(node) {
+            return node.parent.type === "BlockStatement" ||
+                node.parent.type === "StaticBlock" ||
+                node.parent.type === "Program" ||
+
+                // Don't report blocks in switch cases if the block is the only statement of the case.
+                node.parent.type === "SwitchCase" && !(node.parent.consequent[0] === node && node.parent.consequent.length === 1);
+        }
+
+        /**
+         * Checks the enclosing block of the current node for block-level bindings,
+         * and "marks it" as valid if any.
+         * @param {ASTNode} node The current node to check.
+         * @returns {void}
+         */
+        function markLoneBlock(node) {
+            if (loneBlocks.length === 0) {
+                return;
+            }
+
+            const block = node.parent;
+
+            if (loneBlocks[loneBlocks.length - 1] === block) {
+                loneBlocks.pop();
+            }
+        }
+
+        // Default rule definition: report all lone blocks
+        ruleDef = {
+            BlockStatement(node) {
+                if (isLoneBlock(node)) {
+                    report(node);
+                }
+            }
+        };
+
+        // ES6: report blocks without block-level bindings, or that's only child of another block
+        if (context.languageOptions.ecmaVersion >= 2015) {
+            ruleDef = {
+                BlockStatement(node) {
+                    if (isLoneBlock(node)) {
+                        loneBlocks.push(node);
+                    }
+                },
+                "BlockStatement:exit"(node) {
+                    if (loneBlocks.length > 0 && loneBlocks[loneBlocks.length - 1] === node) {
+                        loneBlocks.pop();
+                        report(node);
+                    } else if (
+                        (
+                            node.parent.type === "BlockStatement" ||
+                            node.parent.type === "StaticBlock"
+                        ) &&
+                        node.parent.body.length === 1
+                    ) {
+                        report(node);
+                    }
+                }
+            };
+
+            ruleDef.VariableDeclaration = function(node) {
+                if (node.kind === "let" || node.kind === "const") {
+                    markLoneBlock(node);
+                }
+            };
+
+            ruleDef.FunctionDeclaration = function(node) {
+                if (sourceCode.getScope(node).isStrict) {
+                    markLoneBlock(node);
+                }
+            };
+
+            ruleDef.ClassDeclaration = markLoneBlock;
+        }
+
+        return ruleDef;
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-lonely-if.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-lonely-if.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-lonely-if.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,88 @@
+/**
+ * @fileoverview Rule to disallow if as the only statement in an else block
+ * @author Brandon Mills
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `if` statements as the only statement in `else` blocks",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-lonely-if"
+        },
+
+        schema: [],
+        fixable: "code",
+
+        messages: {
+            unexpectedLonelyIf: "Unexpected if as the only statement in an else block."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        return {
+            IfStatement(node) {
+                const parent = node.parent,
+                    grandparent = parent.parent;
+
+                if (parent && parent.type === "BlockStatement" &&
+                        parent.body.length === 1 && grandparent &&
+                        grandparent.type === "IfStatement" &&
+                        parent === grandparent.alternate) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedLonelyIf",
+                        fix(fixer) {
+                            const openingElseCurly = sourceCode.getFirstToken(parent);
+                            const closingElseCurly = sourceCode.getLastToken(parent);
+                            const elseKeyword = sourceCode.getTokenBefore(openingElseCurly);
+                            const tokenAfterElseBlock = sourceCode.getTokenAfter(closingElseCurly);
+                            const lastIfToken = sourceCode.getLastToken(node.consequent);
+                            const sourceText = sourceCode.getText();
+
+                            if (sourceText.slice(openingElseCurly.range[1],
+                                node.range[0]).trim() || sourceText.slice(node.range[1], closingElseCurly.range[0]).trim()) {
+
+                                // Don't fix if there are any non-whitespace characters interfering (e.g. comments)
+                                return null;
+                            }
+
+                            if (
+                                node.consequent.type !== "BlockStatement" && lastIfToken.value !== ";" && tokenAfterElseBlock &&
+                                (
+                                    node.consequent.loc.end.line === tokenAfterElseBlock.loc.start.line ||
+                                    /^[([/+`-]/u.test(tokenAfterElseBlock.value) ||
+                                    lastIfToken.value === "++" ||
+                                    lastIfToken.value === "--"
+                                )
+                            ) {
+
+                                /*
+                                 * If the `if` statement has no block, and is not followed by a semicolon, make sure that fixing
+                                 * the issue would not change semantics due to ASI. If this would happen, don't do a fix.
+                                 */
+                                return null;
+                            }
+
+                            return fixer.replaceTextRange(
+                                [openingElseCurly.range[0], closingElseCurly.range[1]],
+                                (elseKeyword.range[1] === openingElseCurly.range[0] ? " " : "") + sourceCode.getText(node)
+                            );
+                        }
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-loop-func.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-loop-func.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-loop-func.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,206 @@
+/**
+ * @fileoverview Rule to flag creation of function inside a loop
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Gets the containing loop node of a specified node.
+ *
+ * We don't need to check nested functions, so this ignores those.
+ * `Scope.through` contains references of nested functions.
+ * @param {ASTNode} node An AST node to get.
+ * @returns {ASTNode|null} The containing loop node of the specified node, or
+ *      `null`.
+ */
+function getContainingLoopNode(node) {
+    for (let currentNode = node; currentNode.parent; currentNode = currentNode.parent) {
+        const parent = currentNode.parent;
+
+        switch (parent.type) {
+            case "WhileStatement":
+            case "DoWhileStatement":
+                return parent;
+
+            case "ForStatement":
+
+                // `init` is outside of the loop.
+                if (parent.init !== currentNode) {
+                    return parent;
+                }
+                break;
+
+            case "ForInStatement":
+            case "ForOfStatement":
+
+                // `right` is outside of the loop.
+                if (parent.right !== currentNode) {
+                    return parent;
+                }
+                break;
+
+            case "ArrowFunctionExpression":
+            case "FunctionExpression":
+            case "FunctionDeclaration":
+
+                // We don't need to check nested functions.
+                return null;
+
+            default:
+                break;
+        }
+    }
+
+    return null;
+}
+
+/**
+ * Gets the containing loop node of a given node.
+ * If the loop was nested, this returns the most outer loop.
+ * @param {ASTNode} node A node to get. This is a loop node.
+ * @param {ASTNode|null} excludedNode A node that the result node should not
+ *      include.
+ * @returns {ASTNode} The most outer loop node.
+ */
+function getTopLoopNode(node, excludedNode) {
+    const border = excludedNode ? excludedNode.range[1] : 0;
+    let retv = node;
+    let containingLoopNode = node;
+
+    while (containingLoopNode && containingLoopNode.range[0] >= border) {
+        retv = containingLoopNode;
+        containingLoopNode = getContainingLoopNode(containingLoopNode);
+    }
+
+    return retv;
+}
+
+/**
+ * Checks whether a given reference which refers to an upper scope's variable is
+ * safe or not.
+ * @param {ASTNode} loopNode A containing loop node.
+ * @param {eslint-scope.Reference} reference A reference to check.
+ * @returns {boolean} `true` if the reference is safe or not.
+ */
+function isSafe(loopNode, reference) {
+    const variable = reference.resolved;
+    const definition = variable && variable.defs[0];
+    const declaration = definition && definition.parent;
+    const kind = (declaration && declaration.type === "VariableDeclaration")
+        ? declaration.kind
+        : "";
+
+    // Variables which are declared by `const` is safe.
+    if (kind === "const") {
+        return true;
+    }
+
+    /*
+     * Variables which are declared by `let` in the loop is safe.
+     * It's a different instance from the next loop step's.
+     */
+    if (kind === "let" &&
+        declaration.range[0] > loopNode.range[0] &&
+        declaration.range[1] < loopNode.range[1]
+    ) {
+        return true;
+    }
+
+    /*
+     * WriteReferences which exist after this border are unsafe because those
+     * can modify the variable.
+     */
+    const border = getTopLoopNode(
+        loopNode,
+        (kind === "let") ? declaration : null
+    ).range[0];
+
+    /**
+     * Checks whether a given reference is safe or not.
+     * The reference is every reference of the upper scope's variable we are
+     * looking now.
+     *
+     * It's safe if the reference matches one of the following condition.
+     * - is readonly.
+     * - doesn't exist inside a local function and after the border.
+     * @param {eslint-scope.Reference} upperRef A reference to check.
+     * @returns {boolean} `true` if the reference is safe.
+     */
+    function isSafeReference(upperRef) {
+        const id = upperRef.identifier;
+
+        return (
+            !upperRef.isWrite() ||
+            variable.scope.variableScope === upperRef.from.variableScope &&
+            id.range[0] < border
+        );
+    }
+
+    return Boolean(variable) && variable.references.every(isSafeReference);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow function declarations that contain unsafe references inside loop statements",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-loop-func"
+        },
+
+        schema: [],
+
+        messages: {
+            unsafeRefs: "Function declared in a loop contains unsafe references to variable(s) {{ varNames }}."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Reports functions which match the following condition:
+         *
+         * - has a loop node in ancestors.
+         * - has any references which refers to an unsafe variable.
+         * @param {ASTNode} node The AST node to check.
+         * @returns {void}
+         */
+        function checkForLoops(node) {
+            const loopNode = getContainingLoopNode(node);
+
+            if (!loopNode) {
+                return;
+            }
+
+            const references = sourceCode.getScope(node).through;
+            const unsafeRefs = references.filter(r => r.resolved && !isSafe(loopNode, r)).map(r => r.identifier.name);
+
+            if (unsafeRefs.length > 0) {
+                context.report({
+                    node,
+                    messageId: "unsafeRefs",
+                    data: { varNames: `'${unsafeRefs.join("', '")}'` }
+                });
+            }
+        }
+
+        return {
+            ArrowFunctionExpression: checkForLoops,
+            FunctionExpression: checkForLoops,
+            FunctionDeclaration: checkForLoops
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-loss-of-precision.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-loss-of-precision.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-loss-of-precision.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,214 @@
+/**
+ * @fileoverview Rule to flag numbers that will lose significant figure precision at runtime
+ * @author Jacob Moore
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow literal numbers that lose precision",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-loss-of-precision"
+        },
+        schema: [],
+        messages: {
+            noLossOfPrecision: "This number literal will lose precision at runtime."
+        }
+    },
+
+    create(context) {
+
+        /**
+         * Returns whether the node is number literal
+         * @param {Node} node the node literal being evaluated
+         * @returns {boolean} true if the node is a number literal
+         */
+        function isNumber(node) {
+            return typeof node.value === "number";
+        }
+
+        /**
+         * Gets the source code of the given number literal. Removes `_` numeric separators from the result.
+         * @param {Node} node the number `Literal` node
+         * @returns {string} raw source code of the literal, without numeric separators
+         */
+        function getRaw(node) {
+            return node.raw.replace(/_/gu, "");
+        }
+
+        /**
+         * Checks whether the number is  base ten
+         * @param {ASTNode} node the node being evaluated
+         * @returns {boolean} true if the node is in base ten
+         */
+        function isBaseTen(node) {
+            const prefixes = ["0x", "0X", "0b", "0B", "0o", "0O"];
+
+            return prefixes.every(prefix => !node.raw.startsWith(prefix)) &&
+            !/^0[0-7]+$/u.test(node.raw);
+        }
+
+        /**
+         * Checks that the user-intended non-base ten number equals the actual number after is has been converted to the Number type
+         * @param {Node} node the node being evaluated
+         * @returns {boolean} true if they do not match
+         */
+        function notBaseTenLosesPrecision(node) {
+            const rawString = getRaw(node).toUpperCase();
+            let base = 0;
+
+            if (rawString.startsWith("0B")) {
+                base = 2;
+            } else if (rawString.startsWith("0X")) {
+                base = 16;
+            } else {
+                base = 8;
+            }
+
+            return !rawString.endsWith(node.value.toString(base).toUpperCase());
+        }
+
+        /**
+         * Adds a decimal point to the numeric string at index 1
+         * @param {string} stringNumber the numeric string without any decimal point
+         * @returns {string} the numeric string with a decimal point in the proper place
+         */
+        function addDecimalPointToNumber(stringNumber) {
+            return `${stringNumber[0]}.${stringNumber.slice(1)}`;
+        }
+
+        /**
+         * Returns the number stripped of leading zeros
+         * @param {string} numberAsString the string representation of the number
+         * @returns {string} the stripped string
+         */
+        function removeLeadingZeros(numberAsString) {
+            for (let i = 0; i < numberAsString.length; i++) {
+                if (numberAsString[i] !== "0") {
+                    return numberAsString.slice(i);
+                }
+            }
+            return numberAsString;
+        }
+
+        /**
+         * Returns the number stripped of trailing zeros
+         * @param {string} numberAsString the string representation of the number
+         * @returns {string} the stripped string
+         */
+        function removeTrailingZeros(numberAsString) {
+            for (let i = numberAsString.length - 1; i >= 0; i--) {
+                if (numberAsString[i] !== "0") {
+                    return numberAsString.slice(0, i + 1);
+                }
+            }
+            return numberAsString;
+        }
+
+        /**
+         * Converts an integer to an object containing the integer's coefficient and order of magnitude
+         * @param {string} stringInteger the string representation of the integer being converted
+         * @returns {Object} the object containing the integer's coefficient and order of magnitude
+         */
+        function normalizeInteger(stringInteger) {
+            const significantDigits = removeTrailingZeros(removeLeadingZeros(stringInteger));
+
+            return {
+                magnitude: stringInteger.startsWith("0") ? stringInteger.length - 2 : stringInteger.length - 1,
+                coefficient: addDecimalPointToNumber(significantDigits)
+            };
+        }
+
+        /**
+         *
+         * Converts a float to an object containing the floats's coefficient and order of magnitude
+         * @param {string} stringFloat the string representation of the float being converted
+         * @returns {Object} the object containing the integer's coefficient and order of magnitude
+         */
+        function normalizeFloat(stringFloat) {
+            const trimmedFloat = removeLeadingZeros(stringFloat);
+
+            if (trimmedFloat.startsWith(".")) {
+                const decimalDigits = trimmedFloat.slice(1);
+                const significantDigits = removeLeadingZeros(decimalDigits);
+
+                return {
+                    magnitude: significantDigits.length - decimalDigits.length - 1,
+                    coefficient: addDecimalPointToNumber(significantDigits)
+                };
+
+            }
+            return {
+                magnitude: trimmedFloat.indexOf(".") - 1,
+                coefficient: addDecimalPointToNumber(trimmedFloat.replace(".", ""))
+
+            };
+        }
+
+        /**
+         * Converts a base ten number to proper scientific notation
+         * @param {string} stringNumber the string representation of the base ten number to be converted
+         * @returns {string} the number converted to scientific notation
+         */
+        function convertNumberToScientificNotation(stringNumber) {
+            const splitNumber = stringNumber.replace("E", "e").split("e");
+            const originalCoefficient = splitNumber[0];
+            const normalizedNumber = stringNumber.includes(".") ? normalizeFloat(originalCoefficient)
+                : normalizeInteger(originalCoefficient);
+            const normalizedCoefficient = normalizedNumber.coefficient;
+            const magnitude = splitNumber.length > 1 ? (parseInt(splitNumber[1], 10) + normalizedNumber.magnitude)
+                : normalizedNumber.magnitude;
+
+            return `${normalizedCoefficient}e${magnitude}`;
+        }
+
+        /**
+         * Checks that the user-intended base ten number equals the actual number after is has been converted to the Number type
+         * @param {Node} node the node being evaluated
+         * @returns {boolean} true if they do not match
+         */
+        function baseTenLosesPrecision(node) {
+            const normalizedRawNumber = convertNumberToScientificNotation(getRaw(node));
+            const requestedPrecision = normalizedRawNumber.split("e")[0].replace(".", "").length;
+
+            if (requestedPrecision > 100) {
+                return true;
+            }
+            const storedNumber = node.value.toPrecision(requestedPrecision);
+            const normalizedStoredNumber = convertNumberToScientificNotation(storedNumber);
+
+            return normalizedRawNumber !== normalizedStoredNumber;
+        }
+
+
+        /**
+         * Checks that the user-intended number equals the actual number after is has been converted to the Number type
+         * @param {Node} node the node being evaluated
+         * @returns {boolean} true if they do not match
+         */
+        function losesPrecision(node) {
+            return isBaseTen(node) ? baseTenLosesPrecision(node) : notBaseTenLosesPrecision(node);
+        }
+
+
+        return {
+            Literal(node) {
+                if (node.value && isNumber(node) && losesPrecision(node)) {
+                    context.report({
+                        messageId: "noLossOfPrecision",
+                        node
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-magic-numbers.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-magic-numbers.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-magic-numbers.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,243 @@
+/**
+ * @fileoverview Rule to flag statements that use magic numbers (adapted from https://github.com/danielstjules/buddy.js)
+ * @author Vincent Lemeunier
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+// Maximum array length by the ECMAScript Specification.
+const MAX_ARRAY_LENGTH = 2 ** 32 - 1;
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/**
+ * Convert the value to bigint if it's a string. Otherwise return the value as-is.
+ * @param {bigint|number|string} x The value to normalize.
+ * @returns {bigint|number} The normalized value.
+ */
+function normalizeIgnoreValue(x) {
+    if (typeof x === "string") {
+        return BigInt(x.slice(0, -1));
+    }
+    return x;
+}
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow magic numbers",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-magic-numbers"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                detectObjects: {
+                    type: "boolean",
+                    default: false
+                },
+                enforceConst: {
+                    type: "boolean",
+                    default: false
+                },
+                ignore: {
+                    type: "array",
+                    items: {
+                        anyOf: [
+                            { type: "number" },
+                            { type: "string", pattern: "^[+-]?(?:0|[1-9][0-9]*)n$" }
+                        ]
+                    },
+                    uniqueItems: true
+                },
+                ignoreArrayIndexes: {
+                    type: "boolean",
+                    default: false
+                },
+                ignoreDefaultValues: {
+                    type: "boolean",
+                    default: false
+                },
+                ignoreClassFieldInitialValues: {
+                    type: "boolean",
+                    default: false
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            useConst: "Number constants declarations must use 'const'.",
+            noMagic: "No magic number: {{raw}}."
+        }
+    },
+
+    create(context) {
+        const config = context.options[0] || {},
+            detectObjects = !!config.detectObjects,
+            enforceConst = !!config.enforceConst,
+            ignore = new Set((config.ignore || []).map(normalizeIgnoreValue)),
+            ignoreArrayIndexes = !!config.ignoreArrayIndexes,
+            ignoreDefaultValues = !!config.ignoreDefaultValues,
+            ignoreClassFieldInitialValues = !!config.ignoreClassFieldInitialValues;
+
+        const okTypes = detectObjects ? [] : ["ObjectExpression", "Property", "AssignmentExpression"];
+
+        /**
+         * Returns whether the rule is configured to ignore the given value
+         * @param {bigint|number} value The value to check
+         * @returns {boolean} true if the value is ignored
+         */
+        function isIgnoredValue(value) {
+            return ignore.has(value);
+        }
+
+        /**
+         * Returns whether the number is a default value assignment.
+         * @param {ASTNode} fullNumberNode `Literal` or `UnaryExpression` full number node
+         * @returns {boolean} true if the number is a default value
+         */
+        function isDefaultValue(fullNumberNode) {
+            const parent = fullNumberNode.parent;
+
+            return parent.type === "AssignmentPattern" && parent.right === fullNumberNode;
+        }
+
+        /**
+         * Returns whether the number is the initial value of a class field.
+         * @param {ASTNode} fullNumberNode `Literal` or `UnaryExpression` full number node
+         * @returns {boolean} true if the number is the initial value of a class field.
+         */
+        function isClassFieldInitialValue(fullNumberNode) {
+            const parent = fullNumberNode.parent;
+
+            return parent.type === "PropertyDefinition" && parent.value === fullNumberNode;
+        }
+
+        /**
+         * Returns whether the given node is used as a radix within parseInt() or Number.parseInt()
+         * @param {ASTNode} fullNumberNode `Literal` or `UnaryExpression` full number node
+         * @returns {boolean} true if the node is radix
+         */
+        function isParseIntRadix(fullNumberNode) {
+            const parent = fullNumberNode.parent;
+
+            return parent.type === "CallExpression" && fullNumberNode === parent.arguments[1] &&
+                (
+                    astUtils.isSpecificId(parent.callee, "parseInt") ||
+                    astUtils.isSpecificMemberAccess(parent.callee, "Number", "parseInt")
+                );
+        }
+
+        /**
+         * Returns whether the given node is a direct child of a JSX node.
+         * In particular, it aims to detect numbers used as prop values in JSX tags.
+         * Example: <input maxLength={10} />
+         * @param {ASTNode} fullNumberNode `Literal` or `UnaryExpression` full number node
+         * @returns {boolean} true if the node is a JSX number
+         */
+        function isJSXNumber(fullNumberNode) {
+            return fullNumberNode.parent.type.indexOf("JSX") === 0;
+        }
+
+        /**
+         * Returns whether the given node is used as an array index.
+         * Value must coerce to a valid array index name: "0", "1", "2" ... "4294967294".
+         *
+         * All other values, like "-1", "2.5", or "4294967295", are just "normal" object properties,
+         * which can be created and accessed on an array in addition to the array index properties,
+         * but they don't affect array's length and are not considered by methods such as .map(), .forEach() etc.
+         *
+         * The maximum array length by the specification is 2 ** 32 - 1 = 4294967295,
+         * thus the maximum valid index is 2 ** 32 - 2 = 4294967294.
+         *
+         * All notations are allowed, as long as the value coerces to one of "0", "1", "2" ... "4294967294".
+         *
+         * Valid examples:
+         * a[0], a[1], a[1.2e1], a[0xAB], a[0n], a[1n]
+         * a[-0] (same as a[0] because -0 coerces to "0")
+         * a[-0n] (-0n evaluates to 0n)
+         *
+         * Invalid examples:
+         * a[-1], a[-0xAB], a[-1n], a[2.5], a[1.23e1], a[12e-1]
+         * a[4294967295] (above the max index, it's an access to a regular property a["4294967295"])
+         * a[999999999999999999999] (even if it wasn't above the max index, it would be a["1e+21"])
+         * a[1e310] (same as a["Infinity"])
+         * @param {ASTNode} fullNumberNode `Literal` or `UnaryExpression` full number node
+         * @param {bigint|number} value Value expressed by the fullNumberNode
+         * @returns {boolean} true if the node is a valid array index
+         */
+        function isArrayIndex(fullNumberNode, value) {
+            const parent = fullNumberNode.parent;
+
+            return parent.type === "MemberExpression" && parent.property === fullNumberNode &&
+                (Number.isInteger(value) || typeof value === "bigint") &&
+                value >= 0 && value < MAX_ARRAY_LENGTH;
+        }
+
+        return {
+            Literal(node) {
+                if (!astUtils.isNumericLiteral(node)) {
+                    return;
+                }
+
+                let fullNumberNode;
+                let value;
+                let raw;
+
+                // Treat unary minus as a part of the number
+                if (node.parent.type === "UnaryExpression" && node.parent.operator === "-") {
+                    fullNumberNode = node.parent;
+                    value = -node.value;
+                    raw = `-${node.raw}`;
+                } else {
+                    fullNumberNode = node;
+                    value = node.value;
+                    raw = node.raw;
+                }
+
+                const parent = fullNumberNode.parent;
+
+                // Always allow radix arguments and JSX props
+                if (
+                    isIgnoredValue(value) ||
+                    (ignoreDefaultValues && isDefaultValue(fullNumberNode)) ||
+                    (ignoreClassFieldInitialValues && isClassFieldInitialValue(fullNumberNode)) ||
+                    isParseIntRadix(fullNumberNode) ||
+                    isJSXNumber(fullNumberNode) ||
+                    (ignoreArrayIndexes && isArrayIndex(fullNumberNode, value))
+                ) {
+                    return;
+                }
+
+                if (parent.type === "VariableDeclarator") {
+                    if (enforceConst && parent.parent.kind !== "const") {
+                        context.report({
+                            node: fullNumberNode,
+                            messageId: "useConst"
+                        });
+                    }
+                } else if (
+                    !okTypes.includes(parent.type) ||
+                    (parent.type === "AssignmentExpression" && parent.left.type === "Identifier")
+                ) {
+                    context.report({
+                        node: fullNumberNode,
+                        messageId: "noMagic",
+                        data: {
+                            raw
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-misleading-character-class.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-misleading-character-class.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-misleading-character-class.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,300 @@
+/**
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+const { CALL, CONSTRUCT, ReferenceTracker, getStringIfConstant } = require("@eslint-community/eslint-utils");
+const { RegExpParser, visitRegExpAST } = require("@eslint-community/regexpp");
+const { isCombiningCharacter, isEmojiModifier, isRegionalIndicatorSymbol, isSurrogatePair } = require("./utils/unicode");
+const astUtils = require("./utils/ast-utils.js");
+const { isValidWithUnicodeFlag } = require("./utils/regular-expressions");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * @typedef {import('@eslint-community/regexpp').AST.Character} Character
+ * @typedef {import('@eslint-community/regexpp').AST.CharacterClassElement} CharacterClassElement
+ */
+
+/**
+ * Iterate character sequences of a given nodes.
+ *
+ * CharacterClassRange syntax can steal a part of character sequence,
+ * so this function reverts CharacterClassRange syntax and restore the sequence.
+ * @param {CharacterClassElement[]} nodes The node list to iterate character sequences.
+ * @returns {IterableIterator<Character[]>} The list of character sequences.
+ */
+function *iterateCharacterSequence(nodes) {
+
+    /** @type {Character[]} */
+    let seq = [];
+
+    for (const node of nodes) {
+        switch (node.type) {
+            case "Character":
+                seq.push(node);
+                break;
+
+            case "CharacterClassRange":
+                seq.push(node.min);
+                yield seq;
+                seq = [node.max];
+                break;
+
+            case "CharacterSet":
+            case "CharacterClass": // [[]] nesting character class
+            case "ClassStringDisjunction": // \q{...}
+            case "ExpressionCharacterClass": // [A--B]
+                if (seq.length > 0) {
+                    yield seq;
+                    seq = [];
+                }
+                break;
+
+            // no default
+        }
+    }
+
+    if (seq.length > 0) {
+        yield seq;
+    }
+}
+
+
+/**
+ * Checks whether the given character node is a Unicode code point escape or not.
+ * @param {Character} char the character node to check.
+ * @returns {boolean} `true` if the character node is a Unicode code point escape.
+ */
+function isUnicodeCodePointEscape(char) {
+    return /^\\u\{[\da-f]+\}$/iu.test(char.raw);
+}
+
+/**
+ * Each function returns `true` if it detects that kind of problem.
+ * @type {Record<string, (chars: Character[]) => boolean>}
+ */
+const hasCharacterSequence = {
+    surrogatePairWithoutUFlag(chars) {
+        return chars.some((c, i) => {
+            if (i === 0) {
+                return false;
+            }
+            const c1 = chars[i - 1];
+
+            return (
+                isSurrogatePair(c1.value, c.value) &&
+                !isUnicodeCodePointEscape(c1) &&
+                !isUnicodeCodePointEscape(c)
+            );
+        });
+    },
+
+    surrogatePair(chars) {
+        return chars.some((c, i) => {
+            if (i === 0) {
+                return false;
+            }
+            const c1 = chars[i - 1];
+
+            return (
+                isSurrogatePair(c1.value, c.value) &&
+                (
+                    isUnicodeCodePointEscape(c1) ||
+                    isUnicodeCodePointEscape(c)
+                )
+            );
+        });
+    },
+
+    combiningClass(chars) {
+        return chars.some((c, i) => (
+            i !== 0 &&
+            isCombiningCharacter(c.value) &&
+            !isCombiningCharacter(chars[i - 1].value)
+        ));
+    },
+
+    emojiModifier(chars) {
+        return chars.some((c, i) => (
+            i !== 0 &&
+            isEmojiModifier(c.value) &&
+            !isEmojiModifier(chars[i - 1].value)
+        ));
+    },
+
+    regionalIndicatorSymbol(chars) {
+        return chars.some((c, i) => (
+            i !== 0 &&
+            isRegionalIndicatorSymbol(c.value) &&
+            isRegionalIndicatorSymbol(chars[i - 1].value)
+        ));
+    },
+
+    zwj(chars) {
+        const lastIndex = chars.length - 1;
+
+        return chars.some((c, i) => (
+            i !== 0 &&
+            i !== lastIndex &&
+            c.value === 0x200d &&
+            chars[i - 1].value !== 0x200d &&
+            chars[i + 1].value !== 0x200d
+        ));
+    }
+};
+
+const kinds = Object.keys(hasCharacterSequence);
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow characters which are made with multiple code points in character class syntax",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-misleading-character-class"
+        },
+
+        hasSuggestions: true,
+
+        schema: [],
+
+        messages: {
+            surrogatePairWithoutUFlag: "Unexpected surrogate pair in character class. Use 'u' flag.",
+            surrogatePair: "Unexpected surrogate pair in character class.",
+            combiningClass: "Unexpected combined character in character class.",
+            emojiModifier: "Unexpected modified Emoji in character class.",
+            regionalIndicatorSymbol: "Unexpected national flag in character class.",
+            zwj: "Unexpected joined character sequence in character class.",
+            suggestUnicodeFlag: "Add unicode 'u' flag to regex."
+        }
+    },
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const parser = new RegExpParser();
+
+        /**
+         * Verify a given regular expression.
+         * @param {Node} node The node to report.
+         * @param {string} pattern The regular expression pattern to verify.
+         * @param {string} flags The flags of the regular expression.
+         * @param {Function} unicodeFixer Fixer for missing "u" flag.
+         * @returns {void}
+         */
+        function verify(node, pattern, flags, unicodeFixer) {
+            let patternNode;
+
+            try {
+                patternNode = parser.parsePattern(
+                    pattern,
+                    0,
+                    pattern.length,
+                    {
+                        unicode: flags.includes("u"),
+                        unicodeSets: flags.includes("v")
+                    }
+                );
+            } catch {
+
+                // Ignore regular expressions with syntax errors
+                return;
+            }
+
+            const foundKinds = new Set();
+
+            visitRegExpAST(patternNode, {
+                onCharacterClassEnter(ccNode) {
+                    for (const chars of iterateCharacterSequence(ccNode.elements)) {
+                        for (const kind of kinds) {
+                            if (hasCharacterSequence[kind](chars)) {
+                                foundKinds.add(kind);
+                            }
+                        }
+                    }
+                }
+            });
+
+            for (const kind of foundKinds) {
+                let suggest;
+
+                if (kind === "surrogatePairWithoutUFlag") {
+                    suggest = [{
+                        messageId: "suggestUnicodeFlag",
+                        fix: unicodeFixer
+                    }];
+                }
+
+                context.report({
+                    node,
+                    messageId: kind,
+                    suggest
+                });
+            }
+        }
+
+        return {
+            "Literal[regex]"(node) {
+                verify(node, node.regex.pattern, node.regex.flags, fixer => {
+                    if (!isValidWithUnicodeFlag(context.languageOptions.ecmaVersion, node.regex.pattern)) {
+                        return null;
+                    }
+
+                    return fixer.insertTextAfter(node, "u");
+                });
+            },
+            "Program"(node) {
+                const scope = sourceCode.getScope(node);
+                const tracker = new ReferenceTracker(scope);
+
+                /*
+                 * Iterate calls of RegExp.
+                 * E.g., `new RegExp()`, `RegExp()`, `new window.RegExp()`,
+                 *       `const {RegExp: a} = window; new a()`, etc...
+                 */
+                for (const { node: refNode } of tracker.iterateGlobalReferences({
+                    RegExp: { [CALL]: true, [CONSTRUCT]: true }
+                })) {
+                    const [patternNode, flagsNode] = refNode.arguments;
+                    const pattern = getStringIfConstant(patternNode, scope);
+                    const flags = getStringIfConstant(flagsNode, scope);
+
+                    if (typeof pattern === "string") {
+                        verify(refNode, pattern, flags || "", fixer => {
+
+                            if (!isValidWithUnicodeFlag(context.languageOptions.ecmaVersion, pattern)) {
+                                return null;
+                            }
+
+                            if (refNode.arguments.length === 1) {
+                                const penultimateToken = sourceCode.getLastToken(refNode, { skip: 1 }); // skip closing parenthesis
+
+                                return fixer.insertTextAfter(
+                                    penultimateToken,
+                                    astUtils.isCommaToken(penultimateToken)
+                                        ? ' "u",'
+                                        : ', "u"'
+                                );
+                            }
+
+                            if ((flagsNode.type === "Literal" && typeof flagsNode.value === "string") || flagsNode.type === "TemplateLiteral") {
+                                const range = [flagsNode.range[0], flagsNode.range[1] - 1];
+
+                                return fixer.insertTextAfterRange(range, "u");
+                            }
+
+                            return null;
+                        });
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-mixed-operators.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-mixed-operators.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-mixed-operators.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,229 @@
+/**
+ * @fileoverview Rule to disallow mixed binary operators.
+ * @author Toru Nagashima
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils.js");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const ARITHMETIC_OPERATORS = ["+", "-", "*", "/", "%", "**"];
+const BITWISE_OPERATORS = ["&", "|", "^", "~", "<<", ">>", ">>>"];
+const COMPARISON_OPERATORS = ["==", "!=", "===", "!==", ">", ">=", "<", "<="];
+const LOGICAL_OPERATORS = ["&&", "||"];
+const RELATIONAL_OPERATORS = ["in", "instanceof"];
+const TERNARY_OPERATOR = ["?:"];
+const COALESCE_OPERATOR = ["??"];
+const ALL_OPERATORS = [].concat(
+    ARITHMETIC_OPERATORS,
+    BITWISE_OPERATORS,
+    COMPARISON_OPERATORS,
+    LOGICAL_OPERATORS,
+    RELATIONAL_OPERATORS,
+    TERNARY_OPERATOR,
+    COALESCE_OPERATOR
+);
+const DEFAULT_GROUPS = [
+    ARITHMETIC_OPERATORS,
+    BITWISE_OPERATORS,
+    COMPARISON_OPERATORS,
+    LOGICAL_OPERATORS,
+    RELATIONAL_OPERATORS
+];
+const TARGET_NODE_TYPE = /^(?:Binary|Logical|Conditional)Expression$/u;
+
+/**
+ * Normalizes options.
+ * @param {Object|undefined} options A options object to normalize.
+ * @returns {Object} Normalized option object.
+ */
+function normalizeOptions(options = {}) {
+    const hasGroups = options.groups && options.groups.length > 0;
+    const groups = hasGroups ? options.groups : DEFAULT_GROUPS;
+    const allowSamePrecedence = options.allowSamePrecedence !== false;
+
+    return {
+        groups,
+        allowSamePrecedence
+    };
+}
+
+/**
+ * Checks whether any group which includes both given operator exists or not.
+ * @param {Array<string[]>} groups A list of groups to check.
+ * @param {string} left An operator.
+ * @param {string} right Another operator.
+ * @returns {boolean} `true` if such group existed.
+ */
+function includesBothInAGroup(groups, left, right) {
+    return groups.some(group => group.includes(left) && group.includes(right));
+}
+
+/**
+ * Checks whether the given node is a conditional expression and returns the test node else the left node.
+ * @param {ASTNode} node A node which can be a BinaryExpression or a LogicalExpression node.
+ * This parent node can be BinaryExpression, LogicalExpression
+ *      , or a ConditionalExpression node
+ * @returns {ASTNode} node the appropriate node(left or test).
+ */
+function getChildNode(node) {
+    return node.type === "ConditionalExpression" ? node.test : node.left;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow mixed binary operators",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-mixed-operators"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    groups: {
+                        type: "array",
+                        items: {
+                            type: "array",
+                            items: { enum: ALL_OPERATORS },
+                            minItems: 2,
+                            uniqueItems: true
+                        },
+                        uniqueItems: true
+                    },
+                    allowSamePrecedence: {
+                        type: "boolean",
+                        default: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedMixedOperator: "Unexpected mix of '{{leftOperator}}' and '{{rightOperator}}'. Use parentheses to clarify the intended order of operations."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const options = normalizeOptions(context.options[0]);
+
+        /**
+         * Checks whether a given node should be ignored by options or not.
+         * @param {ASTNode} node A node to check. This is a BinaryExpression
+         *      node or a LogicalExpression node. This parent node is one of
+         *      them, too.
+         * @returns {boolean} `true` if the node should be ignored.
+         */
+        function shouldIgnore(node) {
+            const a = node;
+            const b = node.parent;
+
+            return (
+                !includesBothInAGroup(options.groups, a.operator, b.type === "ConditionalExpression" ? "?:" : b.operator) ||
+                (
+                    options.allowSamePrecedence &&
+                    astUtils.getPrecedence(a) === astUtils.getPrecedence(b)
+                )
+            );
+        }
+
+        /**
+         * Checks whether the operator of a given node is mixed with parent
+         * node's operator or not.
+         * @param {ASTNode} node A node to check. This is a BinaryExpression
+         *      node or a LogicalExpression node. This parent node is one of
+         *      them, too.
+         * @returns {boolean} `true` if the node was mixed.
+         */
+        function isMixedWithParent(node) {
+
+            return (
+                node.operator !== node.parent.operator &&
+                !astUtils.isParenthesised(sourceCode, node)
+            );
+        }
+
+        /**
+         * Gets the operator token of a given node.
+         * @param {ASTNode} node A node to check. This is a BinaryExpression
+         *      node or a LogicalExpression node.
+         * @returns {Token} The operator token of the node.
+         */
+        function getOperatorToken(node) {
+            return sourceCode.getTokenAfter(getChildNode(node), astUtils.isNotClosingParenToken);
+        }
+
+        /**
+         * Reports both the operator of a given node and the operator of the
+         * parent node.
+         * @param {ASTNode} node A node to check. This is a BinaryExpression
+         *      node or a LogicalExpression node. This parent node is one of
+         *      them, too.
+         * @returns {void}
+         */
+        function reportBothOperators(node) {
+            const parent = node.parent;
+            const left = (getChildNode(parent) === node) ? node : parent;
+            const right = (getChildNode(parent) !== node) ? node : parent;
+            const data = {
+                leftOperator: left.operator || "?:",
+                rightOperator: right.operator || "?:"
+            };
+
+            context.report({
+                node: left,
+                loc: getOperatorToken(left).loc,
+                messageId: "unexpectedMixedOperator",
+                data
+            });
+            context.report({
+                node: right,
+                loc: getOperatorToken(right).loc,
+                messageId: "unexpectedMixedOperator",
+                data
+            });
+        }
+
+        /**
+         * Checks between the operator of this node and the operator of the
+         * parent node.
+         * @param {ASTNode} node A node to check.
+         * @returns {void}
+         */
+        function check(node) {
+            if (
+                TARGET_NODE_TYPE.test(node.parent.type) &&
+                isMixedWithParent(node) &&
+                !shouldIgnore(node)
+            ) {
+                reportBothOperators(node);
+            }
+        }
+
+        return {
+            BinaryExpression: check,
+            LogicalExpression: check
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-mixed-requires.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-mixed-requires.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-mixed-requires.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,238 @@
+/**
+ * @fileoverview Rule to enforce grouped require statements for Node.JS
+ * @author Raphael Pigulla
+ * @deprecated in ESLint v7.0.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+
+        replacedBy: [],
+
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `require` calls to be mixed with regular variable declarations",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-mixed-requires"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "boolean"
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            grouping: {
+                                type: "boolean"
+                            },
+                            allowCall: {
+                                type: "boolean"
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            noMixRequire: "Do not mix 'require' and other declarations.",
+            noMixCoreModuleFileComputed: "Do not mix core, module, file and computed requires."
+        }
+    },
+
+    create(context) {
+
+        const options = context.options[0];
+        let grouping = false,
+            allowCall = false;
+
+        if (typeof options === "object") {
+            grouping = options.grouping;
+            allowCall = options.allowCall;
+        } else {
+            grouping = !!options;
+        }
+
+        /**
+         * Returns the list of built-in modules.
+         * @returns {string[]} An array of built-in Node.js modules.
+         */
+        function getBuiltinModules() {
+
+            /*
+             * This list is generated using:
+             * `require("repl")._builtinLibs.concat('repl').sort()`
+             * This particular list is as per nodejs v0.12.2 and iojs v0.7.1
+             */
+            return [
+                "assert", "buffer", "child_process", "cluster", "crypto",
+                "dgram", "dns", "domain", "events", "fs", "http", "https",
+                "net", "os", "path", "punycode", "querystring", "readline",
+                "repl", "smalloc", "stream", "string_decoder", "tls", "tty",
+                "url", "util", "v8", "vm", "zlib"
+            ];
+        }
+
+        const BUILTIN_MODULES = getBuiltinModules();
+
+        const DECL_REQUIRE = "require",
+            DECL_UNINITIALIZED = "uninitialized",
+            DECL_OTHER = "other";
+
+        const REQ_CORE = "core",
+            REQ_FILE = "file",
+            REQ_MODULE = "module",
+            REQ_COMPUTED = "computed";
+
+        /**
+         * Determines the type of a declaration statement.
+         * @param {ASTNode} initExpression The init node of the VariableDeclarator.
+         * @returns {string} The type of declaration represented by the expression.
+         */
+        function getDeclarationType(initExpression) {
+            if (!initExpression) {
+
+                // "var x;"
+                return DECL_UNINITIALIZED;
+            }
+
+            if (initExpression.type === "CallExpression" &&
+                initExpression.callee.type === "Identifier" &&
+                initExpression.callee.name === "require"
+            ) {
+
+                // "var x = require('util');"
+                return DECL_REQUIRE;
+            }
+            if (allowCall &&
+                initExpression.type === "CallExpression" &&
+                initExpression.callee.type === "CallExpression"
+            ) {
+
+                // "var x = require('diagnose')('sub-module');"
+                return getDeclarationType(initExpression.callee);
+            }
+            if (initExpression.type === "MemberExpression") {
+
+                // "var x = require('glob').Glob;"
+                return getDeclarationType(initExpression.object);
+            }
+
+            // "var x = 42;"
+            return DECL_OTHER;
+        }
+
+        /**
+         * Determines the type of module that is loaded via require.
+         * @param {ASTNode} initExpression The init node of the VariableDeclarator.
+         * @returns {string} The module type.
+         */
+        function inferModuleType(initExpression) {
+            if (initExpression.type === "MemberExpression") {
+
+                // "var x = require('glob').Glob;"
+                return inferModuleType(initExpression.object);
+            }
+            if (initExpression.arguments.length === 0) {
+
+                // "var x = require();"
+                return REQ_COMPUTED;
+            }
+
+            const arg = initExpression.arguments[0];
+
+            if (arg.type !== "Literal" || typeof arg.value !== "string") {
+
+                // "var x = require(42);"
+                return REQ_COMPUTED;
+            }
+
+            if (BUILTIN_MODULES.includes(arg.value)) {
+
+                // "var fs = require('fs');"
+                return REQ_CORE;
+            }
+            if (/^\.{0,2}\//u.test(arg.value)) {
+
+                // "var utils = require('./utils');"
+                return REQ_FILE;
+            }
+
+            // "var async = require('async');"
+            return REQ_MODULE;
+
+        }
+
+        /**
+         * Check if the list of variable declarations is mixed, i.e. whether it
+         * contains both require and other declarations.
+         * @param {ASTNode} declarations The list of VariableDeclarators.
+         * @returns {boolean} True if the declarations are mixed, false if not.
+         */
+        function isMixed(declarations) {
+            const contains = {};
+
+            declarations.forEach(declaration => {
+                const type = getDeclarationType(declaration.init);
+
+                contains[type] = true;
+            });
+
+            return !!(
+                contains[DECL_REQUIRE] &&
+                (contains[DECL_UNINITIALIZED] || contains[DECL_OTHER])
+            );
+        }
+
+        /**
+         * Check if all require declarations in the given list are of the same
+         * type.
+         * @param {ASTNode} declarations The list of VariableDeclarators.
+         * @returns {boolean} True if the declarations are grouped, false if not.
+         */
+        function isGrouped(declarations) {
+            const found = {};
+
+            declarations.forEach(declaration => {
+                if (getDeclarationType(declaration.init) === DECL_REQUIRE) {
+                    found[inferModuleType(declaration.init)] = true;
+                }
+            });
+
+            return Object.keys(found).length <= 1;
+        }
+
+
+        return {
+
+            VariableDeclaration(node) {
+
+                if (isMixed(node.declarations)) {
+                    context.report({
+                        node,
+                        messageId: "noMixRequire"
+                    });
+                } else if (grouping && !isGrouped(node.declarations)) {
+                    context.report({
+                        node,
+                        messageId: "noMixCoreModuleFileComputed"
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-mixed-spaces-and-tabs.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-mixed-spaces-and-tabs.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-mixed-spaces-and-tabs.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,116 @@
+/**
+ * @fileoverview Disallow mixed spaces and tabs for indentation
+ * @author Jary Niebur
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Disallow mixed spaces and tabs for indentation",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-mixed-spaces-and-tabs"
+        },
+
+        schema: [
+            {
+                enum: ["smart-tabs", true, false]
+            }
+        ],
+
+        messages: {
+            mixedSpacesAndTabs: "Mixed spaces and tabs."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        let smartTabs;
+
+        switch (context.options[0]) {
+            case true: // Support old syntax, maybe add deprecation warning here
+            case "smart-tabs":
+                smartTabs = true;
+                break;
+            default:
+                smartTabs = false;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+
+            "Program:exit"(node) {
+                const lines = sourceCode.lines,
+                    comments = sourceCode.getAllComments(),
+                    ignoredCommentLines = new Set();
+
+                // Add all lines except the first ones.
+                comments.forEach(comment => {
+                    for (let i = comment.loc.start.line + 1; i <= comment.loc.end.line; i++) {
+                        ignoredCommentLines.add(i);
+                    }
+                });
+
+                /*
+                 * At least one space followed by a tab
+                 * or the reverse before non-tab/-space
+                 * characters begin.
+                 */
+                let regex = /^(?=( +|\t+))\1(?:\t| )/u;
+
+                if (smartTabs) {
+
+                    /*
+                     * At least one space followed by a tab
+                     * before non-tab/-space characters begin.
+                     */
+                    regex = /^(?=(\t*))\1(?=( +))\2\t/u;
+                }
+
+                lines.forEach((line, i) => {
+                    const match = regex.exec(line);
+
+                    if (match) {
+                        const lineNumber = i + 1;
+                        const loc = {
+                            start: {
+                                line: lineNumber,
+                                column: match[0].length - 2
+                            },
+                            end: {
+                                line: lineNumber,
+                                column: match[0].length
+                            }
+                        };
+
+                        if (!ignoredCommentLines.has(lineNumber)) {
+                            const containingNode = sourceCode.getNodeByRangeIndex(sourceCode.getIndexFromLoc(loc.start));
+
+                            if (!(containingNode && ["Literal", "TemplateElement"].includes(containingNode.type))) {
+                                context.report({
+                                    node,
+                                    loc,
+                                    messageId: "mixedSpacesAndTabs"
+                                });
+                            }
+                        }
+                    }
+                });
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-multi-assign.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-multi-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-multi-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,67 @@
+/**
+ * @fileoverview Rule to check use of chained assignment expressions
+ * @author Stewart Rand
+ */
+
+"use strict";
+
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow use of chained assignment expressions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-multi-assign"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                ignoreNonDeclaration: {
+                    type: "boolean",
+                    default: false
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            unexpectedChain: "Unexpected chained assignment."
+        }
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+        const options = context.options[0] || {
+            ignoreNonDeclaration: false
+        };
+        const selectors = [
+            "VariableDeclarator > AssignmentExpression.init",
+            "PropertyDefinition > AssignmentExpression.value"
+        ];
+
+        if (!options.ignoreNonDeclaration) {
+            selectors.push("AssignmentExpression > AssignmentExpression.right");
+        }
+
+        return {
+            [selectors](node) {
+                context.report({
+                    node,
+                    messageId: "unexpectedChain"
+                });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-multi-spaces.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-multi-spaces.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-multi-spaces.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,141 @@
+/**
+ * @fileoverview Disallow use of multiple spaces.
+ * @author Nicholas C. Zakas
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Disallow multiple spaces",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-multi-spaces"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    exceptions: {
+                        type: "object",
+                        patternProperties: {
+                            "^([A-Z][a-z]*)+$": {
+                                type: "boolean"
+                            }
+                        },
+                        additionalProperties: false
+                    },
+                    ignoreEOLComments: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            multipleSpaces: "Multiple spaces found before '{{displayValue}}'."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const options = context.options[0] || {};
+        const ignoreEOLComments = options.ignoreEOLComments;
+        const exceptions = Object.assign({ Property: true }, options.exceptions);
+        const hasExceptions = Object.keys(exceptions).some(key => exceptions[key]);
+
+        /**
+         * Formats value of given comment token for error message by truncating its length.
+         * @param {Token} token comment token
+         * @returns {string} formatted value
+         * @private
+         */
+        function formatReportedCommentValue(token) {
+            const valueLines = token.value.split("\n");
+            const value = valueLines[0];
+            const formattedValue = `${value.slice(0, 12)}...`;
+
+            return valueLines.length === 1 && value.length <= 12 ? value : formattedValue;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program() {
+                sourceCode.tokensAndComments.forEach((leftToken, leftIndex, tokensAndComments) => {
+                    if (leftIndex === tokensAndComments.length - 1) {
+                        return;
+                    }
+                    const rightToken = tokensAndComments[leftIndex + 1];
+
+                    // Ignore tokens that don't have 2 spaces between them or are on different lines
+                    if (
+                        !sourceCode.text.slice(leftToken.range[1], rightToken.range[0]).includes("  ") ||
+                        leftToken.loc.end.line < rightToken.loc.start.line
+                    ) {
+                        return;
+                    }
+
+                    // Ignore comments that are the last token on their line if `ignoreEOLComments` is active.
+                    if (
+                        ignoreEOLComments &&
+                        astUtils.isCommentToken(rightToken) &&
+                        (
+                            leftIndex === tokensAndComments.length - 2 ||
+                            rightToken.loc.end.line < tokensAndComments[leftIndex + 2].loc.start.line
+                        )
+                    ) {
+                        return;
+                    }
+
+                    // Ignore tokens that are in a node in the "exceptions" object
+                    if (hasExceptions) {
+                        const parentNode = sourceCode.getNodeByRangeIndex(rightToken.range[0] - 1);
+
+                        if (parentNode && exceptions[parentNode.type]) {
+                            return;
+                        }
+                    }
+
+                    let displayValue;
+
+                    if (rightToken.type === "Block") {
+                        displayValue = `/*${formatReportedCommentValue(rightToken)}*/`;
+                    } else if (rightToken.type === "Line") {
+                        displayValue = `//${formatReportedCommentValue(rightToken)}`;
+                    } else {
+                        displayValue = rightToken.value;
+                    }
+
+                    context.report({
+                        node: rightToken,
+                        loc: { start: leftToken.loc.end, end: rightToken.loc.start },
+                        messageId: "multipleSpaces",
+                        data: { displayValue },
+                        fix: fixer => fixer.replaceTextRange([leftToken.range[1], rightToken.range[0]], " ")
+                    });
+                });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-multi-str.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-multi-str.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-multi-str.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,65 @@
+/**
+ * @fileoverview Rule to flag when using multiline strings
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow multiline strings",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-multi-str"
+        },
+
+        schema: [],
+
+        messages: {
+            multilineString: "Multiline support is limited to browsers supporting ES5 only."
+        }
+    },
+
+    create(context) {
+
+        /**
+         * Determines if a given node is part of JSX syntax.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} True if the node is a JSX node, false if not.
+         * @private
+         */
+        function isJSXElement(node) {
+            return node.type.indexOf("JSX") === 0;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+
+            Literal(node) {
+                if (astUtils.LINEBREAK_MATCHER.test(node.raw) && !isJSXElement(node.parent)) {
+                    context.report({
+                        node,
+                        messageId: "multilineString"
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-multiple-empty-lines.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-multiple-empty-lines.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-multiple-empty-lines.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,154 @@
+/**
+ * @fileoverview Disallows multiple blank lines.
+ * implementation adapted from the no-trailing-spaces rule.
+ * @author Greg Cochard
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Disallow multiple empty lines",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-multiple-empty-lines"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    max: {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    maxEOF: {
+                        type: "integer",
+                        minimum: 0
+                    },
+                    maxBOF: {
+                        type: "integer",
+                        minimum: 0
+                    }
+                },
+                required: ["max"],
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            blankBeginningOfFile: "Too many blank lines at the beginning of file. Max of {{max}} allowed.",
+            blankEndOfFile: "Too many blank lines at the end of file. Max of {{max}} allowed.",
+            consecutiveBlank: "More than {{max}} blank {{pluralizedLines}} not allowed."
+        }
+    },
+
+    create(context) {
+
+        // Use options.max or 2 as default
+        let max = 2,
+            maxEOF = max,
+            maxBOF = max;
+
+        if (context.options.length) {
+            max = context.options[0].max;
+            maxEOF = typeof context.options[0].maxEOF !== "undefined" ? context.options[0].maxEOF : max;
+            maxBOF = typeof context.options[0].maxBOF !== "undefined" ? context.options[0].maxBOF : max;
+        }
+
+        const sourceCode = context.sourceCode;
+
+        // Swallow the final newline, as some editors add it automatically and we don't want it to cause an issue
+        const allLines = sourceCode.lines[sourceCode.lines.length - 1] === "" ? sourceCode.lines.slice(0, -1) : sourceCode.lines;
+        const templateLiteralLines = new Set();
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            TemplateLiteral(node) {
+                node.quasis.forEach(literalPart => {
+
+                    // Empty lines have a semantic meaning if they're inside template literals. Don't count these as empty lines.
+                    for (let ignoredLine = literalPart.loc.start.line; ignoredLine < literalPart.loc.end.line; ignoredLine++) {
+                        templateLiteralLines.add(ignoredLine);
+                    }
+                });
+            },
+            "Program:exit"(node) {
+                return allLines
+
+                    // Given a list of lines, first get a list of line numbers that are non-empty.
+                    .reduce((nonEmptyLineNumbers, line, index) => {
+                        if (line.trim() || templateLiteralLines.has(index + 1)) {
+                            nonEmptyLineNumbers.push(index + 1);
+                        }
+                        return nonEmptyLineNumbers;
+                    }, [])
+
+                    // Add a value at the end to allow trailing empty lines to be checked.
+                    .concat(allLines.length + 1)
+
+                    // Given two line numbers of non-empty lines, report the lines between if the difference is too large.
+                    .reduce((lastLineNumber, lineNumber) => {
+                        let messageId, maxAllowed;
+
+                        if (lastLineNumber === 0) {
+                            messageId = "blankBeginningOfFile";
+                            maxAllowed = maxBOF;
+                        } else if (lineNumber === allLines.length + 1) {
+                            messageId = "blankEndOfFile";
+                            maxAllowed = maxEOF;
+                        } else {
+                            messageId = "consecutiveBlank";
+                            maxAllowed = max;
+                        }
+
+                        if (lineNumber - lastLineNumber - 1 > maxAllowed) {
+                            context.report({
+                                node,
+                                loc: {
+                                    start: { line: lastLineNumber + maxAllowed + 1, column: 0 },
+                                    end: { line: lineNumber, column: 0 }
+                                },
+                                messageId,
+                                data: {
+                                    max: maxAllowed,
+                                    pluralizedLines: maxAllowed === 1 ? "line" : "lines"
+                                },
+                                fix(fixer) {
+                                    const rangeStart = sourceCode.getIndexFromLoc({ line: lastLineNumber + 1, column: 0 });
+
+                                    /*
+                                     * The end of the removal range is usually the start index of the next line.
+                                     * However, at the end of the file there is no next line, so the end of the
+                                     * range is just the length of the text.
+                                     */
+                                    const lineNumberAfterRemovedLines = lineNumber - maxAllowed;
+                                    const rangeEnd = lineNumberAfterRemovedLines <= allLines.length
+                                        ? sourceCode.getIndexFromLoc({ line: lineNumberAfterRemovedLines, column: 0 })
+                                        : sourceCode.text.length;
+
+                                    return fixer.removeRange([rangeStart, rangeEnd]);
+                                }
+                            });
+                        }
+
+                        return lineNumber;
+                    }, 0);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-native-reassign.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-native-reassign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-native-reassign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,98 @@
+/**
+ * @fileoverview Rule to disallow assignments to native objects or read-only global variables
+ * @author Ilya Volodin
+ * @deprecated in ESLint v3.3.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow assignments to native objects or read-only global variables",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-native-reassign"
+        },
+
+        deprecated: true,
+
+        replacedBy: ["no-global-assign"],
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    exceptions: {
+                        type: "array",
+                        items: { type: "string" },
+                        uniqueItems: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            nativeReassign: "Read-only global '{{name}}' should not be modified."
+        }
+    },
+
+    create(context) {
+        const config = context.options[0];
+        const exceptions = (config && config.exceptions) || [];
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Reports write references.
+         * @param {Reference} reference A reference to check.
+         * @param {int} index The index of the reference in the references.
+         * @param {Reference[]} references The array that the reference belongs to.
+         * @returns {void}
+         */
+        function checkReference(reference, index, references) {
+            const identifier = reference.identifier;
+
+            if (reference.init === false &&
+                reference.isWrite() &&
+
+                /*
+                 * Destructuring assignments can have multiple default value,
+                 * so possibly there are multiple writeable references for the same identifier.
+                 */
+                (index === 0 || references[index - 1].identifier !== identifier)
+            ) {
+                context.report({
+                    node: identifier,
+                    messageId: "nativeReassign",
+                    data: identifier
+                });
+            }
+        }
+
+        /**
+         * Reports write references if a given variable is read-only builtin.
+         * @param {Variable} variable A variable to check.
+         * @returns {void}
+         */
+        function checkVariable(variable) {
+            if (variable.writeable === false && !exceptions.includes(variable.name)) {
+                variable.references.forEach(checkReference);
+            }
+        }
+
+        return {
+            Program(node) {
+                const globalScope = sourceCode.getScope(node);
+
+                globalScope.variables.forEach(checkVariable);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-negated-condition.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-negated-condition.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-negated-condition.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,95 @@
+/**
+ * @fileoverview Rule to disallow a negated condition
+ * @author Alberto Rodríguez
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow negated conditions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-negated-condition"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpectedNegated: "Unexpected negated condition."
+        }
+    },
+
+    create(context) {
+
+        /**
+         * Determines if a given node is an if-else without a condition on the else
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} True if the node has an else without an if.
+         * @private
+         */
+        function hasElseWithoutCondition(node) {
+            return node.alternate && node.alternate.type !== "IfStatement";
+        }
+
+        /**
+         * Determines if a given node is a negated unary expression
+         * @param {Object} test The test object to check.
+         * @returns {boolean} True if the node is a negated unary expression.
+         * @private
+         */
+        function isNegatedUnaryExpression(test) {
+            return test.type === "UnaryExpression" && test.operator === "!";
+        }
+
+        /**
+         * Determines if a given node is a negated binary expression
+         * @param {Test} test The test to check.
+         * @returns {boolean} True if the node is a negated binary expression.
+         * @private
+         */
+        function isNegatedBinaryExpression(test) {
+            return test.type === "BinaryExpression" &&
+                (test.operator === "!=" || test.operator === "!==");
+        }
+
+        /**
+         * Determines if a given node has a negated if expression
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} True if the node has a negated if expression.
+         * @private
+         */
+        function isNegatedIf(node) {
+            return isNegatedUnaryExpression(node.test) || isNegatedBinaryExpression(node.test);
+        }
+
+        return {
+            IfStatement(node) {
+                if (!hasElseWithoutCondition(node)) {
+                    return;
+                }
+
+                if (isNegatedIf(node)) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedNegated"
+                    });
+                }
+            },
+            ConditionalExpression(node) {
+                if (isNegatedIf(node)) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedNegated"
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-negated-in-lhs.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-negated-in-lhs.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-negated-in-lhs.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,46 @@
+/**
+ * @fileoverview A rule to disallow negated left operands of the `in` operator
+ * @author Michael Ficarra
+ * @deprecated in ESLint v3.3.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow negating the left operand in `in` expressions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-negated-in-lhs"
+        },
+
+        replacedBy: ["no-unsafe-negation"],
+
+        deprecated: true,
+        schema: [],
+
+        messages: {
+            negatedLHS: "The 'in' expression's left operand is negated."
+        }
+    },
+
+    create(context) {
+
+        return {
+
+            BinaryExpression(node) {
+                if (node.operator === "in" && node.left.type === "UnaryExpression" && node.left.operator === "!") {
+                    context.report({ node, messageId: "negatedLHS" });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-nested-ternary.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-nested-ternary.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-nested-ternary.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,44 @@
+/**
+ * @fileoverview Rule to flag nested ternary expressions
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow nested ternary expressions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-nested-ternary"
+        },
+
+        schema: [],
+
+        messages: {
+            noNestedTernary: "Do not nest ternary expressions."
+        }
+    },
+
+    create(context) {
+
+        return {
+            ConditionalExpression(node) {
+                if (node.alternate.type === "ConditionalExpression" ||
+                        node.consequent.type === "ConditionalExpression") {
+                    context.report({
+                        node,
+                        messageId: "noNestedTernary"
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-new-func.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-new-func.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-new-func.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,87 @@
+/**
+ * @fileoverview Rule to flag when using new Function
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const callMethods = new Set(["apply", "bind", "call"]);
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `new` operators with the `Function` object",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-new-func"
+        },
+
+        schema: [],
+
+        messages: {
+            noFunctionConstructor: "The Function constructor is eval."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        return {
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
+                const variable = globalScope.set.get("Function");
+
+                if (variable && variable.defs.length === 0) {
+                    variable.references.forEach(ref => {
+                        const idNode = ref.identifier;
+                        const { parent } = idNode;
+                        let evalNode;
+
+                        if (parent) {
+                            if (idNode === parent.callee && (
+                                parent.type === "NewExpression" ||
+                                parent.type === "CallExpression"
+                            )) {
+                                evalNode = parent;
+                            } else if (
+                                parent.type === "MemberExpression" &&
+                                idNode === parent.object &&
+                                callMethods.has(astUtils.getStaticPropertyName(parent))
+                            ) {
+                                const maybeCallee = parent.parent.type === "ChainExpression" ? parent.parent : parent;
+
+                                if (maybeCallee.parent.type === "CallExpression" && maybeCallee.parent.callee === maybeCallee) {
+                                    evalNode = maybeCallee.parent;
+                                }
+                            }
+                        }
+
+                        if (evalNode) {
+                            context.report({
+                                node: evalNode,
+                                messageId: "noFunctionConstructor"
+                            });
+                        }
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-new-native-nonconstructor.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-new-native-nonconstructor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-new-native-nonconstructor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,66 @@
+/**
+ * @fileoverview Rule to disallow use of the new operator with global non-constructor functions
+ * @author Sosuke Suzuki
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const nonConstructorGlobalFunctionNames = ["Symbol", "BigInt"];
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow `new` operators with global non-constructor functions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-new-native-nonconstructor"
+        },
+
+        schema: [],
+
+        messages: {
+            noNewNonconstructor: "`{{name}}` cannot be called as a constructor."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        return {
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
+
+                for (const nonConstructorName of nonConstructorGlobalFunctionNames) {
+                    const variable = globalScope.set.get(nonConstructorName);
+
+                    if (variable && variable.defs.length === 0) {
+                        variable.references.forEach(ref => {
+                            const idNode = ref.identifier;
+                            const parent = idNode.parent;
+
+                            if (parent && parent.type === "NewExpression" && parent.callee === idNode) {
+                                context.report({
+                                    node: idNode,
+                                    messageId: "noNewNonconstructor",
+                                    data: { name: nonConstructorName }
+                                });
+                            }
+                        });
+                    }
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-new-object.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-new-object.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-new-object.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,67 @@
+/**
+ * @fileoverview A rule to disallow calls to the Object constructor
+ * @author Matt DuVall <http://www.mattduvall.com/>
+ * @deprecated in ESLint v8.50.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `Object` constructors",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-new-object"
+        },
+
+        deprecated: true,
+
+        replacedBy: [
+            "no-object-constructor"
+        ],
+
+        schema: [],
+
+        messages: {
+            preferLiteral: "The object literal notation {} is preferable."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        return {
+            NewExpression(node) {
+                const variable = astUtils.getVariableByName(
+                    sourceCode.getScope(node),
+                    node.callee.name
+                );
+
+                if (variable && variable.identifiers.length > 0) {
+                    return;
+                }
+
+                if (node.callee.name === "Object") {
+                    context.report({
+                        node,
+                        messageId: "preferLiteral"
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-new-require.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-new-require.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-new-require.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,50 @@
+/**
+ * @fileoverview Rule to disallow use of new operator with the `require` function
+ * @author Wil Moore III
+ * @deprecated in ESLint v7.0.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+
+        replacedBy: [],
+
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `new` operators with calls to `require`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-new-require"
+        },
+
+        schema: [],
+
+        messages: {
+            noNewRequire: "Unexpected use of new with require."
+        }
+    },
+
+    create(context) {
+
+        return {
+
+            NewExpression(node) {
+                if (node.callee.type === "Identifier" && node.callee.name === "require") {
+                    context.report({
+                        node,
+                        messageId: "noNewRequire"
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-new-symbol.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-new-symbol.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-new-symbol.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,56 @@
+/**
+ * @fileoverview Rule to disallow use of the new operator with the `Symbol` object
+ * @author Alberto Rodríguez
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow `new` operators with the `Symbol` object",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-new-symbol"
+        },
+
+        schema: [],
+
+        messages: {
+            noNewSymbol: "`Symbol` cannot be called as a constructor."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        return {
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
+                const variable = globalScope.set.get("Symbol");
+
+                if (variable && variable.defs.length === 0) {
+                    variable.references.forEach(ref => {
+                        const idNode = ref.identifier;
+                        const parent = idNode.parent;
+
+                        if (parent && parent.type === "NewExpression" && parent.callee === idNode) {
+                            context.report({
+                                node: idNode,
+                                messageId: "noNewSymbol"
+                            });
+                        }
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-new-wrappers.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-new-wrappers.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-new-wrappers.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,60 @@
+/**
+ * @fileoverview Rule to flag when using constructor for wrapper objects
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { getVariableByName } = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `new` operators with the `String`, `Number`, and `Boolean` objects",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-new-wrappers"
+        },
+
+        schema: [],
+
+        messages: {
+            noConstructor: "Do not use {{fn}} as a constructor."
+        }
+    },
+
+    create(context) {
+        const { sourceCode } = context;
+
+        return {
+
+            NewExpression(node) {
+                const wrapperObjects = ["String", "Number", "Boolean"];
+                const { name } = node.callee;
+
+                if (wrapperObjects.includes(name)) {
+                    const variable = getVariableByName(sourceCode.getScope(node), name);
+
+                    if (variable && variable.identifiers.length === 0) {
+                        context.report({
+                            node,
+                            messageId: "noConstructor",
+                            data: { fn: name }
+                        });
+                    }
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-new.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-new.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-new.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,43 @@
+/**
+ * @fileoverview Rule to flag statements with function invocation preceded by
+ * "new" and not part of assignment
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `new` operators outside of assignments or comparisons",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-new"
+        },
+
+        schema: [],
+
+        messages: {
+            noNewStatement: "Do not use 'new' for side effects."
+        }
+    },
+
+    create(context) {
+
+        return {
+            "ExpressionStatement > NewExpression"(node) {
+                context.report({
+                    node: node.parent,
+                    messageId: "noNewStatement"
+                });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-nonoctal-decimal-escape.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-nonoctal-decimal-escape.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-nonoctal-decimal-escape.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,148 @@
+/**
+ * @fileoverview Rule to disallow `\8` and `\9` escape sequences in string literals.
+ * @author Milos Djermanovic
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const QUICK_TEST_REGEX = /\\[89]/u;
+
+/**
+ * Returns unicode escape sequence that represents the given character.
+ * @param {string} character A single code unit.
+ * @returns {string} "\uXXXX" sequence.
+ */
+function getUnicodeEscape(character) {
+    return `\\u${character.charCodeAt(0).toString(16).padStart(4, "0")}`;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `\\8` and `\\9` escape sequences in string literals",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-nonoctal-decimal-escape"
+        },
+
+        hasSuggestions: true,
+
+        schema: [],
+
+        messages: {
+            decimalEscape: "Don't use '{{decimalEscape}}' escape sequence.",
+
+            // suggestions
+            refactor: "Replace '{{original}}' with '{{replacement}}'. This maintains the current functionality.",
+            escapeBackslash: "Replace '{{original}}' with '{{replacement}}' to include the actual backslash character."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Creates a new Suggestion object.
+         * @param {string} messageId "refactor" or "escapeBackslash".
+         * @param {int[]} range The range to replace.
+         * @param {string} replacement New text for the range.
+         * @returns {Object} Suggestion
+         */
+        function createSuggestion(messageId, range, replacement) {
+            return {
+                messageId,
+                data: {
+                    original: sourceCode.getText().slice(...range),
+                    replacement
+                },
+                fix(fixer) {
+                    return fixer.replaceTextRange(range, replacement);
+                }
+            };
+        }
+
+        return {
+            Literal(node) {
+                if (typeof node.value !== "string") {
+                    return;
+                }
+
+                if (!QUICK_TEST_REGEX.test(node.raw)) {
+                    return;
+                }
+
+                const regex = /(?:[^\\]|(?<previousEscape>\\.))*?(?<decimalEscape>\\[89])/suy;
+                let match;
+
+                while ((match = regex.exec(node.raw))) {
+                    const { previousEscape, decimalEscape } = match.groups;
+                    const decimalEscapeRangeEnd = node.range[0] + match.index + match[0].length;
+                    const decimalEscapeRangeStart = decimalEscapeRangeEnd - decimalEscape.length;
+                    const decimalEscapeRange = [decimalEscapeRangeStart, decimalEscapeRangeEnd];
+                    const suggest = [];
+
+                    // When `regex` is matched, `previousEscape` can only capture characters adjacent to `decimalEscape`
+                    if (previousEscape === "\\0") {
+
+                        /*
+                         * Now we have a NULL escape "\0" immediately followed by a decimal escape, e.g.: "\0\8".
+                         * Fixing this to "\08" would turn "\0" into a legacy octal escape. To avoid producing
+                         * an octal escape while fixing a decimal escape, we provide different suggestions.
+                         */
+                        suggest.push(
+                            createSuggestion( // "\0\8" -> "\u00008"
+                                "refactor",
+                                [decimalEscapeRangeStart - previousEscape.length, decimalEscapeRangeEnd],
+                                `${getUnicodeEscape("\0")}${decimalEscape[1]}`
+                            ),
+                            createSuggestion( // "\8" -> "\u0038"
+                                "refactor",
+                                decimalEscapeRange,
+                                getUnicodeEscape(decimalEscape[1])
+                            )
+                        );
+                    } else {
+                        suggest.push(
+                            createSuggestion( // "\8" -> "8"
+                                "refactor",
+                                decimalEscapeRange,
+                                decimalEscape[1]
+                            )
+                        );
+                    }
+
+                    suggest.push(
+                        createSuggestion( // "\8" -> "\\8"
+                            "escapeBackslash",
+                            decimalEscapeRange,
+                            `\\${decimalEscape}`
+                        )
+                    );
+
+                    context.report({
+                        node,
+                        loc: {
+                            start: sourceCode.getLocFromIndex(decimalEscapeRangeStart),
+                            end: sourceCode.getLocFromIndex(decimalEscapeRangeEnd)
+                        },
+                        messageId: "decimalEscape",
+                        data: {
+                            decimalEscape
+                        },
+                        suggest
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-obj-calls.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-obj-calls.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-obj-calls.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,86 @@
+/**
+ * @fileoverview Rule to flag use of an object property of the global object (Math and JSON) as a function
+ * @author James Allardice
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { CALL, CONSTRUCT, ReferenceTracker } = require("@eslint-community/eslint-utils");
+const getPropertyName = require("./utils/ast-utils").getStaticPropertyName;
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const nonCallableGlobals = ["Atomics", "JSON", "Math", "Reflect", "Intl"];
+
+/**
+ * Returns the name of the node to report
+ * @param {ASTNode} node A node to report
+ * @returns {string} name to report
+ */
+function getReportNodeName(node) {
+    if (node.type === "ChainExpression") {
+        return getReportNodeName(node.expression);
+    }
+    if (node.type === "MemberExpression") {
+        return getPropertyName(node);
+    }
+    return node.name;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow calling global object properties as functions",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-obj-calls"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpectedCall: "'{{name}}' is not a function.",
+            unexpectedRefCall: "'{{name}}' is reference to '{{ref}}', which is not a function."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        return {
+            Program(node) {
+                const scope = sourceCode.getScope(node);
+                const tracker = new ReferenceTracker(scope);
+                const traceMap = {};
+
+                for (const g of nonCallableGlobals) {
+                    traceMap[g] = {
+                        [CALL]: true,
+                        [CONSTRUCT]: true
+                    };
+                }
+
+                for (const { node: refNode, path } of tracker.iterateGlobalReferences(traceMap)) {
+                    const name = getReportNodeName(refNode.callee);
+                    const ref = path[0];
+                    const messageId = name === ref ? "unexpectedCall" : "unexpectedRefCall";
+
+                    context.report({ node: refNode, messageId, data: { name, ref } });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-object-constructor.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-object-constructor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-object-constructor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,117 @@
+/**
+ * @fileoverview Rule to disallow calls to the `Object` constructor without an argument
+ * @author Francesco Trotta
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const {
+    getVariableByName,
+    isArrowToken,
+    isStartOfExpressionStatement,
+    needsPrecedingSemicolon
+} = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow calls to the `Object` constructor without an argument",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-object-constructor"
+        },
+
+        hasSuggestions: true,
+
+        schema: [],
+
+        messages: {
+            preferLiteral: "The object literal notation {} is preferable.",
+            useLiteral: "Replace with '{{replacement}}'.",
+            useLiteralAfterSemicolon: "Replace with '{{replacement}}', add preceding semicolon."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Determines whether or not an object literal that replaces a specified node needs to be enclosed in parentheses.
+         * @param {ASTNode} node The node to be replaced.
+         * @returns {boolean} Whether or not parentheses around the object literal are required.
+         */
+        function needsParentheses(node) {
+            if (isStartOfExpressionStatement(node)) {
+                return true;
+            }
+
+            const prevToken = sourceCode.getTokenBefore(node);
+
+            if (prevToken && isArrowToken(prevToken)) {
+                return true;
+            }
+
+            return false;
+        }
+
+        /**
+         * Reports on nodes where the `Object` constructor is called without arguments.
+         * @param {ASTNode} node The node to evaluate.
+         * @returns {void}
+         */
+        function check(node) {
+            if (node.callee.type !== "Identifier" || node.callee.name !== "Object" || node.arguments.length) {
+                return;
+            }
+
+            const variable = getVariableByName(sourceCode.getScope(node), "Object");
+
+            if (variable && variable.identifiers.length === 0) {
+                let replacement;
+                let fixText;
+                let messageId = "useLiteral";
+
+                if (needsParentheses(node)) {
+                    replacement = "({})";
+                    if (needsPrecedingSemicolon(sourceCode, node)) {
+                        fixText = ";({})";
+                        messageId = "useLiteralAfterSemicolon";
+                    } else {
+                        fixText = "({})";
+                    }
+                } else {
+                    replacement = fixText = "{}";
+                }
+
+                context.report({
+                    node,
+                    messageId: "preferLiteral",
+                    suggest: [
+                        {
+                            messageId,
+                            data: { replacement },
+                            fix: fixer => fixer.replaceText(node, fixText)
+                        }
+                    ]
+                });
+            }
+        }
+
+        return {
+            CallExpression: check,
+            NewExpression: check
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-octal-escape.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-octal-escape.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-octal-escape.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,56 @@
+/**
+ * @fileoverview Rule to flag octal escape sequences in string literals.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow octal escape sequences in string literals",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-octal-escape"
+        },
+
+        schema: [],
+
+        messages: {
+            octalEscapeSequence: "Don't use octal: '\\{{sequence}}'. Use '\\u....' instead."
+        }
+    },
+
+    create(context) {
+
+        return {
+
+            Literal(node) {
+                if (typeof node.value !== "string") {
+                    return;
+                }
+
+                // \0 represents a valid NULL character if it isn't followed by a digit.
+                const match = node.raw.match(
+                    /^(?:[^\\]|\\.)*?\\([0-3][0-7]{1,2}|[4-7][0-7]|0(?=[89])|[1-7])/su
+                );
+
+                if (match) {
+                    context.report({
+                        node,
+                        messageId: "octalEscapeSequence",
+                        data: { sequence: match[1] }
+                    });
+                }
+            }
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-octal.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-octal.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-octal.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,45 @@
+/**
+ * @fileoverview Rule to flag when initializing octal literal
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow octal literals",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-octal"
+        },
+
+        schema: [],
+
+        messages: {
+            noOctal: "Octal literals should not be used."
+        }
+    },
+
+    create(context) {
+
+        return {
+
+            Literal(node) {
+                if (typeof node.value === "number" && /^0[0-9]/u.test(node.raw)) {
+                    context.report({
+                        node,
+                        messageId: "noOctal"
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-param-reassign.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-param-reassign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-param-reassign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,230 @@
+/**
+ * @fileoverview Disallow reassignment of function parameters.
+ * @author Nat Burns
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const stopNodePattern = /(?:Statement|Declaration|Function(?:Expression)?|Program)$/u;
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow reassigning `function` parameters",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-param-reassign"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        type: "object",
+                        properties: {
+                            props: {
+                                enum: [false]
+                            }
+                        },
+                        additionalProperties: false
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            props: {
+                                enum: [true]
+                            },
+                            ignorePropertyModificationsFor: {
+                                type: "array",
+                                items: {
+                                    type: "string"
+                                },
+                                uniqueItems: true
+                            },
+                            ignorePropertyModificationsForRegex: {
+                                type: "array",
+                                items: {
+                                    type: "string"
+                                },
+                                uniqueItems: true
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            assignmentToFunctionParam: "Assignment to function parameter '{{name}}'.",
+            assignmentToFunctionParamProp: "Assignment to property of function parameter '{{name}}'."
+        }
+    },
+
+    create(context) {
+        const props = context.options[0] && context.options[0].props;
+        const ignoredPropertyAssignmentsFor = context.options[0] && context.options[0].ignorePropertyModificationsFor || [];
+        const ignoredPropertyAssignmentsForRegex = context.options[0] && context.options[0].ignorePropertyModificationsForRegex || [];
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Checks whether or not the reference modifies properties of its variable.
+         * @param {Reference} reference A reference to check.
+         * @returns {boolean} Whether or not the reference modifies properties of its variable.
+         */
+        function isModifyingProp(reference) {
+            let node = reference.identifier;
+            let parent = node.parent;
+
+            while (parent && (!stopNodePattern.test(parent.type) ||
+                    parent.type === "ForInStatement" || parent.type === "ForOfStatement")) {
+                switch (parent.type) {
+
+                    // e.g. foo.a = 0;
+                    case "AssignmentExpression":
+                        return parent.left === node;
+
+                    // e.g. ++foo.a;
+                    case "UpdateExpression":
+                        return true;
+
+                    // e.g. delete foo.a;
+                    case "UnaryExpression":
+                        if (parent.operator === "delete") {
+                            return true;
+                        }
+                        break;
+
+                    // e.g. for (foo.a in b) {}
+                    case "ForInStatement":
+                    case "ForOfStatement":
+                        if (parent.left === node) {
+                            return true;
+                        }
+
+                        // this is a stop node for parent.right and parent.body
+                        return false;
+
+                    // EXCLUDES: e.g. cache.get(foo.a).b = 0;
+                    case "CallExpression":
+                        if (parent.callee !== node) {
+                            return false;
+                        }
+                        break;
+
+                    // EXCLUDES: e.g. cache[foo.a] = 0;
+                    case "MemberExpression":
+                        if (parent.property === node) {
+                            return false;
+                        }
+                        break;
+
+                    // EXCLUDES: e.g. ({ [foo]: a }) = bar;
+                    case "Property":
+                        if (parent.key === node) {
+                            return false;
+                        }
+
+                        break;
+
+                    // EXCLUDES: e.g. (foo ? a : b).c = bar;
+                    case "ConditionalExpression":
+                        if (parent.test === node) {
+                            return false;
+                        }
+
+                        break;
+
+                    // no default
+                }
+
+                node = parent;
+                parent = node.parent;
+            }
+
+            return false;
+        }
+
+        /**
+         * Tests that an identifier name matches any of the ignored property assignments.
+         * First we test strings in ignoredPropertyAssignmentsFor.
+         * Then we instantiate and test RegExp objects from ignoredPropertyAssignmentsForRegex strings.
+         * @param {string} identifierName A string that describes the name of an identifier to
+         * ignore property assignments for.
+         * @returns {boolean} Whether the string matches an ignored property assignment regular expression or not.
+         */
+        function isIgnoredPropertyAssignment(identifierName) {
+            return ignoredPropertyAssignmentsFor.includes(identifierName) ||
+                ignoredPropertyAssignmentsForRegex.some(ignored => new RegExp(ignored, "u").test(identifierName));
+        }
+
+        /**
+         * Reports a reference if is non initializer and writable.
+         * @param {Reference} reference A reference to check.
+         * @param {int} index The index of the reference in the references.
+         * @param {Reference[]} references The array that the reference belongs to.
+         * @returns {void}
+         */
+        function checkReference(reference, index, references) {
+            const identifier = reference.identifier;
+
+            if (identifier &&
+                !reference.init &&
+
+                /*
+                 * Destructuring assignments can have multiple default value,
+                 * so possibly there are multiple writeable references for the same identifier.
+                 */
+                (index === 0 || references[index - 1].identifier !== identifier)
+            ) {
+                if (reference.isWrite()) {
+                    context.report({
+                        node: identifier,
+                        messageId: "assignmentToFunctionParam",
+                        data: { name: identifier.name }
+                    });
+                } else if (props && isModifyingProp(reference) && !isIgnoredPropertyAssignment(identifier.name)) {
+                    context.report({
+                        node: identifier,
+                        messageId: "assignmentToFunctionParamProp",
+                        data: { name: identifier.name }
+                    });
+                }
+            }
+        }
+
+        /**
+         * Finds and reports references that are non initializer and writable.
+         * @param {Variable} variable A variable to check.
+         * @returns {void}
+         */
+        function checkVariable(variable) {
+            if (variable.defs[0].type === "Parameter") {
+                variable.references.forEach(checkReference);
+            }
+        }
+
+        /**
+         * Checks parameters of a given function node.
+         * @param {ASTNode} node A function node to check.
+         * @returns {void}
+         */
+        function checkForFunction(node) {
+            sourceCode.getDeclaredVariables(node).forEach(checkVariable);
+        }
+
+        return {
+
+            // `:exit` is needed for the `node.parent` property of identifier nodes.
+            "FunctionDeclaration:exit": checkForFunction,
+            "FunctionExpression:exit": checkForFunction,
+            "ArrowFunctionExpression:exit": checkForFunction
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-path-concat.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-path-concat.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-path-concat.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,64 @@
+/**
+ * @fileoverview Disallow string concatenation when using __dirname and __filename
+ * @author Nicholas C. Zakas
+ * @deprecated in ESLint v7.0.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+
+        replacedBy: [],
+
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow string concatenation with `__dirname` and `__filename`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-path-concat"
+        },
+
+        schema: [],
+
+        messages: {
+            usePathFunctions: "Use path.join() or path.resolve() instead of + to create paths."
+        }
+    },
+
+    create(context) {
+
+        const MATCHER = /^__(?:dir|file)name$/u;
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+
+            BinaryExpression(node) {
+
+                const left = node.left,
+                    right = node.right;
+
+                if (node.operator === "+" &&
+                        ((left.type === "Identifier" && MATCHER.test(left.name)) ||
+                        (right.type === "Identifier" && MATCHER.test(right.name)))
+                ) {
+
+                    context.report({
+                        node,
+                        messageId: "usePathFunctions"
+                    });
+                }
+            }
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-plusplus.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-plusplus.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-plusplus.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,105 @@
+/**
+ * @fileoverview Rule to flag use of unary increment and decrement operators.
+ * @author Ian Christian Myers
+ * @author Brody McKee (github.com/mrmckeb)
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines whether the given node is the update node of a `ForStatement`.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is `ForStatement` update.
+ */
+function isForStatementUpdate(node) {
+    const parent = node.parent;
+
+    return parent.type === "ForStatement" && parent.update === node;
+}
+
+/**
+ * Determines whether the given node is considered to be a for loop "afterthought" by the logic of this rule.
+ * In particular, it returns `true` if the given node is either:
+ *   - The update node of a `ForStatement`: for (;; i++) {}
+ *   - An operand of a sequence expression that is the update node: for (;; foo(), i++) {}
+ *   - An operand of a sequence expression that is child of another sequence expression, etc.,
+ *     up to the sequence expression that is the update node: for (;; foo(), (bar(), (baz(), i++))) {}
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is a for loop afterthought.
+ */
+function isForLoopAfterthought(node) {
+    const parent = node.parent;
+
+    if (parent.type === "SequenceExpression") {
+        return isForLoopAfterthought(parent);
+    }
+
+    return isForStatementUpdate(node);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow the unary operators `++` and `--`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-plusplus"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowForLoopAfterthoughts: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedUnaryOp: "Unary operator '{{operator}}' used."
+        }
+    },
+
+    create(context) {
+
+        const config = context.options[0];
+        let allowForLoopAfterthoughts = false;
+
+        if (typeof config === "object") {
+            allowForLoopAfterthoughts = config.allowForLoopAfterthoughts === true;
+        }
+
+        return {
+
+            UpdateExpression(node) {
+                if (allowForLoopAfterthoughts && isForLoopAfterthought(node)) {
+                    return;
+                }
+
+                context.report({
+                    node,
+                    messageId: "unexpectedUnaryOp",
+                    data: {
+                        operator: node.operator
+                    }
+                });
+            }
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-process-env.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-process-env.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-process-env.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,51 @@
+/**
+ * @fileoverview Disallow the use of process.env()
+ * @author Vignesh Anand
+ * @deprecated in ESLint v7.0.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+
+        replacedBy: [],
+
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow the use of `process.env`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-process-env"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpectedProcessEnv: "Unexpected use of process.env."
+        }
+    },
+
+    create(context) {
+
+        return {
+
+            MemberExpression(node) {
+                const objectName = node.object.name,
+                    propertyName = node.property.name;
+
+                if (objectName === "process" && !node.computed && propertyName && propertyName === "env") {
+                    context.report({ node, messageId: "unexpectedProcessEnv" });
+                }
+
+            }
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-process-exit.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-process-exit.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-process-exit.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,47 @@
+/**
+ * @fileoverview Disallow the use of process.exit()
+ * @author Nicholas C. Zakas
+ * @deprecated in ESLint v7.0.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+
+        replacedBy: [],
+
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow the use of `process.exit()`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-process-exit"
+        },
+
+        schema: [],
+
+        messages: {
+            noProcessExit: "Don't use process.exit(); throw an error instead."
+        }
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            "CallExpression > MemberExpression.callee[object.name = 'process'][property.name = 'exit']"(node) {
+                context.report({ node: node.parent, messageId: "noProcessExit" });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-promise-executor-return.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-promise-executor-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-promise-executor-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,263 @@
+/**
+ * @fileoverview Rule to disallow returning values from Promise executor functions
+ * @author Milos Djermanovic
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { findVariable } = require("@eslint-community/eslint-utils");
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const functionTypesToCheck = new Set(["ArrowFunctionExpression", "FunctionExpression"]);
+
+/**
+ * Determines whether the given identifier node is a reference to a global variable.
+ * @param {ASTNode} node `Identifier` node to check.
+ * @param {Scope} scope Scope to which the node belongs.
+ * @returns {boolean} True if the identifier is a reference to a global variable.
+ */
+function isGlobalReference(node, scope) {
+    const variable = findVariable(scope, node);
+
+    return variable !== null && variable.scope.type === "global" && variable.defs.length === 0;
+}
+
+/**
+ * Finds function's outer scope.
+ * @param {Scope} scope Function's own scope.
+ * @returns {Scope} Function's outer scope.
+ */
+function getOuterScope(scope) {
+    const upper = scope.upper;
+
+    if (upper.type === "function-expression-name") {
+        return upper.upper;
+    }
+    return upper;
+}
+
+/**
+ * Determines whether the given function node is used as a Promise executor.
+ * @param {ASTNode} node The node to check.
+ * @param {Scope} scope Function's own scope.
+ * @returns {boolean} `true` if the node is a Promise executor.
+ */
+function isPromiseExecutor(node, scope) {
+    const parent = node.parent;
+
+    return parent.type === "NewExpression" &&
+        parent.arguments[0] === node &&
+        parent.callee.type === "Identifier" &&
+        parent.callee.name === "Promise" &&
+        isGlobalReference(parent.callee, getOuterScope(scope));
+}
+
+/**
+ * Checks if the given node is a void expression.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} - `true` if the node is a void expression
+ */
+function expressionIsVoid(node) {
+    return node.type === "UnaryExpression" && node.operator === "void";
+}
+
+/**
+ * Fixes the linting error by prepending "void " to the given node
+ * @param {Object} sourceCode context given by context.sourceCode
+ * @param {ASTNode} node The node to fix.
+ * @param {Object} fixer The fixer object provided by ESLint.
+ * @returns {Array<Object>} - An array of fix objects to apply to the node.
+ */
+function voidPrependFixer(sourceCode, node, fixer) {
+
+    const requiresParens =
+
+        // prepending `void ` will fail if the node has a lower precedence than void
+        astUtils.getPrecedence(node) < astUtils.getPrecedence({ type: "UnaryExpression", operator: "void" }) &&
+
+        // check if there are parentheses around the node to avoid redundant parentheses
+        !astUtils.isParenthesised(sourceCode, node);
+
+    // avoid parentheses issues
+    const returnOrArrowToken = sourceCode.getTokenBefore(
+        node,
+        node.parent.type === "ArrowFunctionExpression"
+            ? astUtils.isArrowToken
+
+            // isReturnToken
+            : token => token.type === "Keyword" && token.value === "return"
+    );
+
+    const firstToken = sourceCode.getTokenAfter(returnOrArrowToken);
+
+    const prependSpace =
+
+        // is return token, as => allows void to be adjacent
+        returnOrArrowToken.value === "return" &&
+
+        // If two tokens (return and "(") are adjacent
+        returnOrArrowToken.range[1] === firstToken.range[0];
+
+    return [
+        fixer.insertTextBefore(firstToken, `${prependSpace ? " " : ""}void ${requiresParens ? "(" : ""}`),
+        fixer.insertTextAfter(node, requiresParens ? ")" : "")
+    ];
+}
+
+/**
+ * Fixes the linting error by `wrapping {}` around the given node's body.
+ * @param {Object} sourceCode context given by context.sourceCode
+ * @param {ASTNode} node The node to fix.
+ * @param {Object} fixer The fixer object provided by ESLint.
+ * @returns {Array<Object>} - An array of fix objects to apply to the node.
+ */
+function curlyWrapFixer(sourceCode, node, fixer) {
+
+    // https://github.com/eslint/eslint/pull/17282#issuecomment-1592795923
+    const arrowToken = sourceCode.getTokenBefore(node.body, astUtils.isArrowToken);
+    const firstToken = sourceCode.getTokenAfter(arrowToken);
+    const lastToken = sourceCode.getLastToken(node);
+
+    return [
+        fixer.insertTextBefore(firstToken, "{"),
+        fixer.insertTextAfter(lastToken, "}")
+    ];
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow returning values from Promise executor functions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-promise-executor-return"
+        },
+
+        hasSuggestions: true,
+
+        schema: [{
+            type: "object",
+            properties: {
+                allowVoid: {
+                    type: "boolean",
+                    default: false
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            returnsValue: "Return values from promise executor functions cannot be read.",
+
+            // arrow and function suggestions
+            prependVoid: "Prepend `void` to the expression.",
+
+            // only arrow suggestions
+            wrapBraces: "Wrap the expression in `{}`."
+        }
+    },
+
+    create(context) {
+
+        let funcInfo = null;
+        const sourceCode = context.sourceCode;
+        const {
+            allowVoid = false
+        } = context.options[0] || {};
+
+        return {
+
+            onCodePathStart(_, node) {
+                funcInfo = {
+                    upper: funcInfo,
+                    shouldCheck:
+                        functionTypesToCheck.has(node.type) &&
+                        isPromiseExecutor(node, sourceCode.getScope(node))
+                };
+
+                if (// Is a Promise executor
+                    funcInfo.shouldCheck &&
+                    node.type === "ArrowFunctionExpression" &&
+                    node.expression &&
+
+                    // Except void
+                    !(allowVoid && expressionIsVoid(node.body))
+                ) {
+                    const suggest = [];
+
+                    // prevent useless refactors
+                    if (allowVoid) {
+                        suggest.push({
+                            messageId: "prependVoid",
+                            fix(fixer) {
+                                return voidPrependFixer(sourceCode, node.body, fixer);
+                            }
+                        });
+                    }
+
+                    // Do not suggest wrapping an unnamed FunctionExpression in braces as that would be invalid syntax.
+                    if (!(node.body.type === "FunctionExpression" && !node.body.id)) {
+                        suggest.push({
+                            messageId: "wrapBraces",
+                            fix(fixer) {
+                                return curlyWrapFixer(sourceCode, node, fixer);
+                            }
+                        });
+                    }
+
+                    context.report({
+                        node: node.body,
+                        messageId: "returnsValue",
+                        suggest
+                    });
+                }
+            },
+
+            onCodePathEnd() {
+                funcInfo = funcInfo.upper;
+            },
+
+            ReturnStatement(node) {
+                if (!(funcInfo.shouldCheck && node.argument)) {
+                    return;
+                }
+
+                // node is `return <expression>`
+                if (!allowVoid) {
+                    context.report({ node, messageId: "returnsValue" });
+                    return;
+                }
+
+                if (expressionIsVoid(node.argument)) {
+                    return;
+                }
+
+                // allowVoid && !expressionIsVoid
+                context.report({
+                    node,
+                    messageId: "returnsValue",
+                    suggest: [{
+                        messageId: "prependVoid",
+                        fix(fixer) {
+                            return voidPrependFixer(sourceCode, node.argument, fixer);
+                        }
+                    }]
+                });
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-proto.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-proto.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-proto.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,48 @@
+/**
+ * @fileoverview Rule to flag usage of __proto__ property
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { getStaticPropertyName } = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow the use of the `__proto__` property",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-proto"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpectedProto: "The '__proto__' property is deprecated."
+        }
+    },
+
+    create(context) {
+
+        return {
+
+            MemberExpression(node) {
+                if (getStaticPropertyName(node) === "__proto__") {
+                    context.report({ node, messageId: "unexpectedProto" });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-prototype-builtins.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-prototype-builtins.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-prototype-builtins.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,159 @@
+/**
+ * @fileoverview Rule to disallow use of Object.prototype builtins on objects
+ * @author Andrew Levine
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Returns true if the node or any of the objects
+ * to the left of it in the member/call chain is optional.
+ *
+ * e.g. `a?.b`, `a?.b.c`, `a?.()`, `a()?.()`
+ * @param {ASTNode} node The expression to check
+ * @returns {boolean} `true` if there is a short-circuiting optional `?.`
+ * in the same option chain to the left of this call or member expression,
+ * or the node itself is an optional call or member `?.`.
+ */
+function isAfterOptional(node) {
+    let leftNode;
+
+    if (node.type === "MemberExpression") {
+        leftNode = node.object;
+    } else if (node.type === "CallExpression") {
+        leftNode = node.callee;
+    } else {
+        return false;
+    }
+    if (node.optional) {
+        return true;
+    }
+    return isAfterOptional(leftNode);
+}
+
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow calling some `Object.prototype` methods directly on objects",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-prototype-builtins"
+        },
+
+        hasSuggestions: true,
+
+        schema: [],
+
+        messages: {
+            prototypeBuildIn: "Do not access Object.prototype method '{{prop}}' from target object.",
+            callObjectPrototype: "Call Object.prototype.{{prop}} explicitly."
+        }
+    },
+
+    create(context) {
+        const DISALLOWED_PROPS = new Set([
+            "hasOwnProperty",
+            "isPrototypeOf",
+            "propertyIsEnumerable"
+        ]);
+
+        /**
+         * Reports if a disallowed property is used in a CallExpression
+         * @param {ASTNode} node The CallExpression node.
+         * @returns {void}
+         */
+        function disallowBuiltIns(node) {
+
+            const callee = astUtils.skipChainExpression(node.callee);
+
+            if (callee.type !== "MemberExpression") {
+                return;
+            }
+
+            const propName = astUtils.getStaticPropertyName(callee);
+
+            if (propName !== null && DISALLOWED_PROPS.has(propName)) {
+                context.report({
+                    messageId: "prototypeBuildIn",
+                    loc: callee.property.loc,
+                    data: { prop: propName },
+                    node,
+                    suggest: [
+                        {
+                            messageId: "callObjectPrototype",
+                            data: { prop: propName },
+                            fix(fixer) {
+                                const sourceCode = context.sourceCode;
+
+                                /*
+                                 * A call after an optional chain (e.g. a?.b.hasOwnProperty(c))
+                                 * must be fixed manually because the call can be short-circuited
+                                 */
+                                if (isAfterOptional(node)) {
+                                    return null;
+                                }
+
+                                /*
+                                 * A call on a ChainExpression (e.g. (a?.hasOwnProperty)(c)) will trigger
+                                 * no-unsafe-optional-chaining which should be fixed before this suggestion
+                                 */
+                                if (node.callee.type === "ChainExpression") {
+                                    return null;
+                                }
+
+                                const objectVariable = astUtils.getVariableByName(sourceCode.getScope(node), "Object");
+
+                                /*
+                                 * We can't use Object if the global Object was shadowed,
+                                 * or Object does not exist in the global scope for some reason
+                                 */
+                                if (!objectVariable || objectVariable.scope.type !== "global" || objectVariable.defs.length > 0) {
+                                    return null;
+                                }
+
+                                let objectText = sourceCode.getText(callee.object);
+
+                                if (astUtils.getPrecedence(callee.object) <= astUtils.getPrecedence({ type: "SequenceExpression" })) {
+                                    objectText = `(${objectText})`;
+                                }
+
+                                const openParenToken = sourceCode.getTokenAfter(
+                                    node.callee,
+                                    astUtils.isOpeningParenToken
+                                );
+                                const isEmptyParameters = node.arguments.length === 0;
+                                const delim = isEmptyParameters ? "" : ", ";
+                                const fixes = [
+                                    fixer.replaceText(callee, `Object.prototype.${propName}.call`),
+                                    fixer.insertTextAfter(openParenToken, objectText + delim)
+                                ];
+
+                                return fixes;
+                            }
+                        }
+                    ]
+                });
+            }
+        }
+
+        return {
+            CallExpression: disallowBuiltIns
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-redeclare.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-redeclare.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-redeclare.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,174 @@
+/**
+ * @fileoverview Rule to flag when the same variable is declared more then once.
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow variable redeclaration",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-redeclare"
+        },
+
+        messages: {
+            redeclared: "'{{id}}' is already defined.",
+            redeclaredAsBuiltin: "'{{id}}' is already defined as a built-in global variable.",
+            redeclaredBySyntax: "'{{id}}' is already defined by a variable declaration."
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    builtinGlobals: { type: "boolean", default: true }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const options = {
+            builtinGlobals: Boolean(
+                context.options.length === 0 ||
+                context.options[0].builtinGlobals
+            )
+        };
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Iterate declarations of a given variable.
+         * @param {escope.variable} variable The variable object to iterate declarations.
+         * @returns {IterableIterator<{type:string,node:ASTNode,loc:SourceLocation}>} The declarations.
+         */
+        function *iterateDeclarations(variable) {
+            if (options.builtinGlobals && (
+                variable.eslintImplicitGlobalSetting === "readonly" ||
+                variable.eslintImplicitGlobalSetting === "writable"
+            )) {
+                yield { type: "builtin" };
+            }
+
+            for (const id of variable.identifiers) {
+                yield { type: "syntax", node: id, loc: id.loc };
+            }
+
+            if (variable.eslintExplicitGlobalComments) {
+                for (const comment of variable.eslintExplicitGlobalComments) {
+                    yield {
+                        type: "comment",
+                        node: comment,
+                        loc: astUtils.getNameLocationInGlobalDirectiveComment(
+                            sourceCode,
+                            comment,
+                            variable.name
+                        )
+                    };
+                }
+            }
+        }
+
+        /**
+         * Find variables in a given scope and flag redeclared ones.
+         * @param {Scope} scope An eslint-scope scope object.
+         * @returns {void}
+         * @private
+         */
+        function findVariablesInScope(scope) {
+            for (const variable of scope.variables) {
+                const [
+                    declaration,
+                    ...extraDeclarations
+                ] = iterateDeclarations(variable);
+
+                if (extraDeclarations.length === 0) {
+                    continue;
+                }
+
+                /*
+                 * If the type of a declaration is different from the type of
+                 * the first declaration, it shows the location of the first
+                 * declaration.
+                 */
+                const detailMessageId = declaration.type === "builtin"
+                    ? "redeclaredAsBuiltin"
+                    : "redeclaredBySyntax";
+                const data = { id: variable.name };
+
+                // Report extra declarations.
+                for (const { type, node, loc } of extraDeclarations) {
+                    const messageId = type === declaration.type
+                        ? "redeclared"
+                        : detailMessageId;
+
+                    context.report({ node, loc, messageId, data });
+                }
+            }
+        }
+
+        /**
+         * Find variables in the current scope.
+         * @param {ASTNode} node The node of the current scope.
+         * @returns {void}
+         * @private
+         */
+        function checkForBlock(node) {
+            const scope = sourceCode.getScope(node);
+
+            /*
+             * In ES5, some node type such as `BlockStatement` doesn't have that scope.
+             * `scope.block` is a different node in such a case.
+             */
+            if (scope.block === node) {
+                findVariablesInScope(scope);
+            }
+        }
+
+        return {
+            Program(node) {
+                const scope = sourceCode.getScope(node);
+
+                findVariablesInScope(scope);
+
+                // Node.js or ES modules has a special scope.
+                if (
+                    scope.type === "global" &&
+                    scope.childScopes[0] &&
+
+                    // The special scope's block is the Program node.
+                    scope.block === scope.childScopes[0].block
+                ) {
+                    findVariablesInScope(scope.childScopes[0]);
+                }
+            },
+
+            FunctionDeclaration: checkForBlock,
+            FunctionExpression: checkForBlock,
+            ArrowFunctionExpression: checkForBlock,
+
+            StaticBlock: checkForBlock,
+
+            BlockStatement: checkForBlock,
+            ForStatement: checkForBlock,
+            ForInStatement: checkForBlock,
+            ForOfStatement: checkForBlock,
+            SwitchStatement: checkForBlock
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-regex-spaces.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-regex-spaces.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-regex-spaces.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,197 @@
+/**
+ * @fileoverview Rule to count multiple spaces in regular expressions
+ * @author Matt DuVall <http://www.mattduvall.com/>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const regexpp = require("@eslint-community/regexpp");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const regExpParser = new regexpp.RegExpParser();
+const DOUBLE_SPACE = / {2}/u;
+
+/**
+ * Check if node is a string
+ * @param {ASTNode} node node to evaluate
+ * @returns {boolean} True if its a string
+ * @private
+ */
+function isString(node) {
+    return node && node.type === "Literal" && typeof node.value === "string";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow multiple spaces in regular expressions",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-regex-spaces"
+        },
+
+        schema: [],
+        fixable: "code",
+
+        messages: {
+            multipleSpaces: "Spaces are hard to count. Use {{{length}}}."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Validate regular expression
+         * @param {ASTNode} nodeToReport Node to report.
+         * @param {string} pattern Regular expression pattern to validate.
+         * @param {string} rawPattern Raw representation of the pattern in the source code.
+         * @param {number} rawPatternStartRange Start range of the pattern in the source code.
+         * @param {string} flags Regular expression flags.
+         * @returns {void}
+         * @private
+         */
+        function checkRegex(nodeToReport, pattern, rawPattern, rawPatternStartRange, flags) {
+
+            // Skip if there are no consecutive spaces in the source code, to avoid reporting e.g., RegExp(' \ ').
+            if (!DOUBLE_SPACE.test(rawPattern)) {
+                return;
+            }
+
+            const characterClassNodes = [];
+            let regExpAST;
+
+            try {
+                regExpAST = regExpParser.parsePattern(pattern, 0, pattern.length, { unicode: flags.includes("u"), unicodeSets: flags.includes("v") });
+            } catch {
+
+                // Ignore regular expressions with syntax errors
+                return;
+            }
+
+            regexpp.visitRegExpAST(regExpAST, {
+                onCharacterClassEnter(ccNode) {
+                    characterClassNodes.push(ccNode);
+                }
+            });
+
+            const spacesPattern = /( {2,})(?: [+*{?]|[^+*{?]|$)/gu;
+            let match;
+
+            while ((match = spacesPattern.exec(pattern))) {
+                const { 1: { length }, index } = match;
+
+                // Report only consecutive spaces that are not in character classes.
+                if (
+                    characterClassNodes.every(({ start, end }) => index < start || end <= index)
+                ) {
+                    context.report({
+                        node: nodeToReport,
+                        messageId: "multipleSpaces",
+                        data: { length },
+                        fix(fixer) {
+                            if (pattern !== rawPattern) {
+                                return null;
+                            }
+                            return fixer.replaceTextRange(
+                                [rawPatternStartRange + index, rawPatternStartRange + index + length],
+                                ` {${length}}`
+                            );
+                        }
+                    });
+
+                    // Report only the first occurrence of consecutive spaces
+                    return;
+                }
+            }
+        }
+
+        /**
+         * Validate regular expression literals
+         * @param {ASTNode} node node to validate
+         * @returns {void}
+         * @private
+         */
+        function checkLiteral(node) {
+            if (node.regex) {
+                const pattern = node.regex.pattern;
+                const rawPattern = node.raw.slice(1, node.raw.lastIndexOf("/"));
+                const rawPatternStartRange = node.range[0] + 1;
+                const flags = node.regex.flags;
+
+                checkRegex(
+                    node,
+                    pattern,
+                    rawPattern,
+                    rawPatternStartRange,
+                    flags
+                );
+            }
+        }
+
+        /**
+         * Validate strings passed to the RegExp constructor
+         * @param {ASTNode} node node to validate
+         * @returns {void}
+         * @private
+         */
+        function checkFunction(node) {
+            const scope = sourceCode.getScope(node);
+            const regExpVar = astUtils.getVariableByName(scope, "RegExp");
+            const shadowed = regExpVar && regExpVar.defs.length > 0;
+            const patternNode = node.arguments[0];
+
+            if (node.callee.type === "Identifier" && node.callee.name === "RegExp" && isString(patternNode) && !shadowed) {
+                const pattern = patternNode.value;
+                const rawPattern = patternNode.raw.slice(1, -1);
+                const rawPatternStartRange = patternNode.range[0] + 1;
+                let flags;
+
+                if (node.arguments.length < 2) {
+
+                    // It has no flags.
+                    flags = "";
+                } else {
+                    const flagsNode = node.arguments[1];
+
+                    if (isString(flagsNode)) {
+                        flags = flagsNode.value;
+                    } else {
+
+                        // The flags cannot be determined.
+                        return;
+                    }
+                }
+
+                checkRegex(
+                    node,
+                    pattern,
+                    rawPattern,
+                    rawPatternStartRange,
+                    flags
+                );
+            }
+        }
+
+        return {
+            Literal: checkLiteral,
+            CallExpression: checkFunction,
+            NewExpression: checkFunction
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-restricted-exports.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-restricted-exports.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-restricted-exports.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,193 @@
+/**
+ * @fileoverview Rule to disallow specified names in exports
+ * @author Milos Djermanovic
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow specified names in exports",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-restricted-exports"
+        },
+
+        schema: [{
+            anyOf: [
+                {
+                    type: "object",
+                    properties: {
+                        restrictedNamedExports: {
+                            type: "array",
+                            items: {
+                                type: "string"
+                            },
+                            uniqueItems: true
+                        }
+                    },
+                    additionalProperties: false
+                },
+                {
+                    type: "object",
+                    properties: {
+                        restrictedNamedExports: {
+                            type: "array",
+                            items: {
+                                type: "string",
+                                pattern: "^(?!default$)"
+                            },
+                            uniqueItems: true
+                        },
+                        restrictDefaultExports: {
+                            type: "object",
+                            properties: {
+
+                                // Allow/Disallow `export default foo; export default 42; export default function foo() {}` format
+                                direct: {
+                                    type: "boolean"
+                                },
+
+                                // Allow/Disallow `export { foo as default };` declarations
+                                named: {
+                                    type: "boolean"
+                                },
+
+                                //  Allow/Disallow `export { default } from "mod"; export { default as default } from "mod";` declarations
+                                defaultFrom: {
+                                    type: "boolean"
+                                },
+
+                                //  Allow/Disallow `export { foo as default } from "mod";` declarations
+                                namedFrom: {
+                                    type: "boolean"
+                                },
+
+                                //  Allow/Disallow `export * as default from "mod"`; declarations
+                                namespaceFrom: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    },
+                    additionalProperties: false
+                }
+            ]
+        }],
+
+        messages: {
+            restrictedNamed: "'{{name}}' is restricted from being used as an exported name.",
+            restrictedDefault: "Exporting 'default' is restricted."
+        }
+    },
+
+    create(context) {
+
+        const restrictedNames = new Set(context.options[0] && context.options[0].restrictedNamedExports);
+        const restrictDefaultExports = context.options[0] && context.options[0].restrictDefaultExports;
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Checks and reports given exported name.
+         * @param {ASTNode} node exported `Identifier` or string `Literal` node to check.
+         * @returns {void}
+         */
+        function checkExportedName(node) {
+            const name = astUtils.getModuleExportName(node);
+
+            if (restrictedNames.has(name)) {
+                context.report({
+                    node,
+                    messageId: "restrictedNamed",
+                    data: { name }
+                });
+                return;
+            }
+
+            if (name === "default") {
+                if (node.parent.type === "ExportAllDeclaration") {
+                    if (restrictDefaultExports && restrictDefaultExports.namespaceFrom) {
+                        context.report({
+                            node,
+                            messageId: "restrictedDefault"
+                        });
+                    }
+
+                } else { // ExportSpecifier
+                    const isSourceSpecified = !!node.parent.parent.source;
+                    const specifierLocalName = astUtils.getModuleExportName(node.parent.local);
+
+                    if (!isSourceSpecified && restrictDefaultExports && restrictDefaultExports.named) {
+                        context.report({
+                            node,
+                            messageId: "restrictedDefault"
+                        });
+                        return;
+                    }
+
+                    if (isSourceSpecified && restrictDefaultExports) {
+                        if (
+                            (specifierLocalName === "default" && restrictDefaultExports.defaultFrom) ||
+                            (specifierLocalName !== "default" && restrictDefaultExports.namedFrom)
+                        ) {
+                            context.report({
+                                node,
+                                messageId: "restrictedDefault"
+                            });
+                        }
+                    }
+                }
+            }
+        }
+
+        return {
+            ExportAllDeclaration(node) {
+                if (node.exported) {
+                    checkExportedName(node.exported);
+                }
+            },
+
+            ExportDefaultDeclaration(node) {
+                if (restrictDefaultExports && restrictDefaultExports.direct) {
+                    context.report({
+                        node,
+                        messageId: "restrictedDefault"
+                    });
+                }
+            },
+
+            ExportNamedDeclaration(node) {
+                const declaration = node.declaration;
+
+                if (declaration) {
+                    if (declaration.type === "FunctionDeclaration" || declaration.type === "ClassDeclaration") {
+                        checkExportedName(declaration.id);
+                    } else if (declaration.type === "VariableDeclaration") {
+                        sourceCode.getDeclaredVariables(declaration)
+                            .map(v => v.defs.find(d => d.parent === declaration))
+                            .map(d => d.name) // Identifier nodes
+                            .forEach(checkExportedName);
+                    }
+                } else {
+                    node.specifiers
+                        .map(s => s.exported)
+                        .forEach(checkExportedName);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-restricted-globals.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-restricted-globals.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-restricted-globals.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,124 @@
+/**
+ * @fileoverview Restrict usage of specified globals.
+ * @author Benoît Zugmeyer
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow specified global variables",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-restricted-globals"
+        },
+
+        schema: {
+            type: "array",
+            items: {
+                oneOf: [
+                    {
+                        type: "string"
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            name: { type: "string" },
+                            message: { type: "string" }
+                        },
+                        required: ["name"],
+                        additionalProperties: false
+                    }
+                ]
+            },
+            uniqueItems: true,
+            minItems: 0
+        },
+
+        messages: {
+            defaultMessage: "Unexpected use of '{{name}}'.",
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            customMessage: "Unexpected use of '{{name}}'. {{customMessage}}"
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        // If no globals are restricted, we don't need to do anything
+        if (context.options.length === 0) {
+            return {};
+        }
+
+        const restrictedGlobalMessages = context.options.reduce((memo, option) => {
+            if (typeof option === "string") {
+                memo[option] = null;
+            } else {
+                memo[option.name] = option.message;
+            }
+
+            return memo;
+        }, {});
+
+        /**
+         * Report a variable to be used as a restricted global.
+         * @param {Reference} reference the variable reference
+         * @returns {void}
+         * @private
+         */
+        function reportReference(reference) {
+            const name = reference.identifier.name,
+                customMessage = restrictedGlobalMessages[name],
+                messageId = customMessage
+                    ? "customMessage"
+                    : "defaultMessage";
+
+            context.report({
+                node: reference.identifier,
+                messageId,
+                data: {
+                    name,
+                    customMessage
+                }
+            });
+        }
+
+        /**
+         * Check if the given name is a restricted global name.
+         * @param {string} name name of a variable
+         * @returns {boolean} whether the variable is a restricted global or not
+         * @private
+         */
+        function isRestricted(name) {
+            return Object.prototype.hasOwnProperty.call(restrictedGlobalMessages, name);
+        }
+
+        return {
+            Program(node) {
+                const scope = sourceCode.getScope(node);
+
+                // Report variables declared elsewhere (ex: variables defined as "global" by eslint)
+                scope.variables.forEach(variable => {
+                    if (!variable.defs.length && isRestricted(variable.name)) {
+                        variable.references.forEach(reportReference);
+                    }
+                });
+
+                // Report variables not declared at all
+                scope.through.forEach(reference => {
+                    if (isRestricted(reference.identifier.name)) {
+                        reportReference(reference);
+                    }
+                });
+
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-restricted-imports.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-restricted-imports.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-restricted-imports.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,410 @@
+/**
+ * @fileoverview Restrict usage of specified node imports.
+ * @author Guy Ellis
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const ignore = require("ignore");
+
+const arrayOfStringsOrObjects = {
+    type: "array",
+    items: {
+        anyOf: [
+            { type: "string" },
+            {
+                type: "object",
+                properties: {
+                    name: { type: "string" },
+                    message: {
+                        type: "string",
+                        minLength: 1
+                    },
+                    importNames: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        }
+                    }
+                },
+                additionalProperties: false,
+                required: ["name"]
+            }
+        ]
+    },
+    uniqueItems: true
+};
+
+const arrayOfStringsOrObjectPatterns = {
+    anyOf: [
+        {
+            type: "array",
+            items: {
+                type: "string"
+            },
+            uniqueItems: true
+        },
+        {
+            type: "array",
+            items: {
+                type: "object",
+                properties: {
+                    importNames: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        },
+                        minItems: 1,
+                        uniqueItems: true
+                    },
+                    group: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        },
+                        minItems: 1,
+                        uniqueItems: true
+                    },
+                    importNamePattern: {
+                        type: "string"
+                    },
+                    message: {
+                        type: "string",
+                        minLength: 1
+                    },
+                    caseSensitive: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false,
+                required: ["group"]
+            },
+            uniqueItems: true
+        }
+    ]
+};
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow specified modules when loaded by `import`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-restricted-imports"
+        },
+
+        messages: {
+            path: "'{{importSource}}' import is restricted from being used.",
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            pathWithCustomMessage: "'{{importSource}}' import is restricted from being used. {{customMessage}}",
+
+            patterns: "'{{importSource}}' import is restricted from being used by a pattern.",
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            patternWithCustomMessage: "'{{importSource}}' import is restricted from being used by a pattern. {{customMessage}}",
+
+            patternAndImportName: "'{{importName}}' import from '{{importSource}}' is restricted from being used by a pattern.",
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            patternAndImportNameWithCustomMessage: "'{{importName}}' import from '{{importSource}}' is restricted from being used by a pattern. {{customMessage}}",
+
+            patternAndEverything: "* import is invalid because '{{importNames}}' from '{{importSource}}' is restricted from being used by a pattern.",
+
+            patternAndEverythingWithRegexImportName: "* import is invalid because import name matching '{{importNames}}' pattern from '{{importSource}}' is restricted from being used.",
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            patternAndEverythingWithCustomMessage: "* import is invalid because '{{importNames}}' from '{{importSource}}' is restricted from being used by a pattern. {{customMessage}}",
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            patternAndEverythingWithRegexImportNameAndCustomMessage: "* import is invalid because import name matching '{{importNames}}' pattern from '{{importSource}}' is restricted from being used. {{customMessage}}",
+
+            everything: "* import is invalid because '{{importNames}}' from '{{importSource}}' is restricted.",
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            everythingWithCustomMessage: "* import is invalid because '{{importNames}}' from '{{importSource}}' is restricted. {{customMessage}}",
+
+            importName: "'{{importName}}' import from '{{importSource}}' is restricted.",
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            importNameWithCustomMessage: "'{{importName}}' import from '{{importSource}}' is restricted. {{customMessage}}"
+        },
+
+        schema: {
+            anyOf: [
+                arrayOfStringsOrObjects,
+                {
+                    type: "array",
+                    items: [{
+                        type: "object",
+                        properties: {
+                            paths: arrayOfStringsOrObjects,
+                            patterns: arrayOfStringsOrObjectPatterns
+                        },
+                        additionalProperties: false
+                    }],
+                    additionalItems: false
+                }
+            ]
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const options = Array.isArray(context.options) ? context.options : [];
+        const isPathAndPatternsObject =
+            typeof options[0] === "object" &&
+            (Object.prototype.hasOwnProperty.call(options[0], "paths") || Object.prototype.hasOwnProperty.call(options[0], "patterns"));
+
+        const restrictedPaths = (isPathAndPatternsObject ? options[0].paths : context.options) || [];
+        const restrictedPathMessages = restrictedPaths.reduce((memo, importSource) => {
+            if (typeof importSource === "string") {
+                memo[importSource] = { message: null };
+            } else {
+                memo[importSource.name] = {
+                    message: importSource.message,
+                    importNames: importSource.importNames
+                };
+            }
+            return memo;
+        }, {});
+
+        // Handle patterns too, either as strings or groups
+        let restrictedPatterns = (isPathAndPatternsObject ? options[0].patterns : []) || [];
+
+        // standardize to array of objects if we have an array of strings
+        if (restrictedPatterns.length > 0 && typeof restrictedPatterns[0] === "string") {
+            restrictedPatterns = [{ group: restrictedPatterns }];
+        }
+
+        // relative paths are supported for this rule
+        const restrictedPatternGroups = restrictedPatterns.map(({ group, message, caseSensitive, importNames, importNamePattern }) => ({
+            matcher: ignore({ allowRelativePaths: true, ignorecase: !caseSensitive }).add(group),
+            customMessage: message,
+            importNames,
+            importNamePattern
+        }));
+
+        // if no imports are restricted we don't need to check
+        if (Object.keys(restrictedPaths).length === 0 && restrictedPatternGroups.length === 0) {
+            return {};
+        }
+
+        /**
+         * Report a restricted path.
+         * @param {string} importSource path of the import
+         * @param {Map<string,Object[]>} importNames Map of import names that are being imported
+         * @param {node} node representing the restricted path reference
+         * @returns {void}
+         * @private
+         */
+        function checkRestrictedPathAndReport(importSource, importNames, node) {
+            if (!Object.prototype.hasOwnProperty.call(restrictedPathMessages, importSource)) {
+                return;
+            }
+
+            const customMessage = restrictedPathMessages[importSource].message;
+            const restrictedImportNames = restrictedPathMessages[importSource].importNames;
+
+            if (restrictedImportNames) {
+                if (importNames.has("*")) {
+                    const specifierData = importNames.get("*")[0];
+
+                    context.report({
+                        node,
+                        messageId: customMessage ? "everythingWithCustomMessage" : "everything",
+                        loc: specifierData.loc,
+                        data: {
+                            importSource,
+                            importNames: restrictedImportNames,
+                            customMessage
+                        }
+                    });
+                }
+
+                restrictedImportNames.forEach(importName => {
+                    if (importNames.has(importName)) {
+                        const specifiers = importNames.get(importName);
+
+                        specifiers.forEach(specifier => {
+                            context.report({
+                                node,
+                                messageId: customMessage ? "importNameWithCustomMessage" : "importName",
+                                loc: specifier.loc,
+                                data: {
+                                    importSource,
+                                    customMessage,
+                                    importName
+                                }
+                            });
+                        });
+                    }
+                });
+            } else {
+                context.report({
+                    node,
+                    messageId: customMessage ? "pathWithCustomMessage" : "path",
+                    data: {
+                        importSource,
+                        customMessage
+                    }
+                });
+            }
+        }
+
+        /**
+         * Report a restricted path specifically for patterns.
+         * @param {node} node representing the restricted path reference
+         * @param {Object} group contains an Ignore instance for paths, the customMessage to show on failure,
+         * and any restricted import names that have been specified in the config
+         * @param {Map<string,Object[]>} importNames Map of import names that are being imported
+         * @returns {void}
+         * @private
+         */
+        function reportPathForPatterns(node, group, importNames) {
+            const importSource = node.source.value.trim();
+
+            const customMessage = group.customMessage;
+            const restrictedImportNames = group.importNames;
+            const restrictedImportNamePattern = group.importNamePattern ? new RegExp(group.importNamePattern, "u") : null;
+
+            /*
+             * If we are not restricting to any specific import names and just the pattern itself,
+             * report the error and move on
+             */
+            if (!restrictedImportNames && !restrictedImportNamePattern) {
+                context.report({
+                    node,
+                    messageId: customMessage ? "patternWithCustomMessage" : "patterns",
+                    data: {
+                        importSource,
+                        customMessage
+                    }
+                });
+                return;
+            }
+
+            importNames.forEach((specifiers, importName) => {
+                if (importName === "*") {
+                    const [specifier] = specifiers;
+
+                    if (restrictedImportNames) {
+                        context.report({
+                            node,
+                            messageId: customMessage ? "patternAndEverythingWithCustomMessage" : "patternAndEverything",
+                            loc: specifier.loc,
+                            data: {
+                                importSource,
+                                importNames: restrictedImportNames,
+                                customMessage
+                            }
+                        });
+                    } else {
+                        context.report({
+                            node,
+                            messageId: customMessage ? "patternAndEverythingWithRegexImportNameAndCustomMessage" : "patternAndEverythingWithRegexImportName",
+                            loc: specifier.loc,
+                            data: {
+                                importSource,
+                                importNames: restrictedImportNamePattern,
+                                customMessage
+                            }
+                        });
+                    }
+
+                    return;
+                }
+
+                if (
+                    (restrictedImportNames && restrictedImportNames.includes(importName)) ||
+                    (restrictedImportNamePattern && restrictedImportNamePattern.test(importName))
+                ) {
+                    specifiers.forEach(specifier => {
+                        context.report({
+                            node,
+                            messageId: customMessage ? "patternAndImportNameWithCustomMessage" : "patternAndImportName",
+                            loc: specifier.loc,
+                            data: {
+                                importSource,
+                                customMessage,
+                                importName
+                            }
+                        });
+                    });
+                }
+            });
+        }
+
+        /**
+         * Check if the given importSource is restricted by a pattern.
+         * @param {string} importSource path of the import
+         * @param {Object} group contains a Ignore instance for paths, and the customMessage to show if it fails
+         * @returns {boolean} whether the variable is a restricted pattern or not
+         * @private
+         */
+        function isRestrictedPattern(importSource, group) {
+            return group.matcher.ignores(importSource);
+        }
+
+        /**
+         * Checks a node to see if any problems should be reported.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkNode(node) {
+            const importSource = node.source.value.trim();
+            const importNames = new Map();
+
+            if (node.type === "ExportAllDeclaration") {
+                const starToken = sourceCode.getFirstToken(node, 1);
+
+                importNames.set("*", [{ loc: starToken.loc }]);
+            } else if (node.specifiers) {
+                for (const specifier of node.specifiers) {
+                    let name;
+                    const specifierData = { loc: specifier.loc };
+
+                    if (specifier.type === "ImportDefaultSpecifier") {
+                        name = "default";
+                    } else if (specifier.type === "ImportNamespaceSpecifier") {
+                        name = "*";
+                    } else if (specifier.imported) {
+                        name = astUtils.getModuleExportName(specifier.imported);
+                    } else if (specifier.local) {
+                        name = astUtils.getModuleExportName(specifier.local);
+                    }
+
+                    if (typeof name === "string") {
+                        if (importNames.has(name)) {
+                            importNames.get(name).push(specifierData);
+                        } else {
+                            importNames.set(name, [specifierData]);
+                        }
+                    }
+                }
+            }
+
+            checkRestrictedPathAndReport(importSource, importNames, node);
+            restrictedPatternGroups.forEach(group => {
+                if (isRestrictedPattern(importSource, group)) {
+                    reportPathForPatterns(node, group, importNames);
+                }
+            });
+        }
+
+        return {
+            ImportDeclaration: checkNode,
+            ExportNamedDeclaration(node) {
+                if (node.source) {
+                    checkNode(node);
+                }
+            },
+            ExportAllDeclaration: checkNode
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-restricted-modules.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-restricted-modules.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-restricted-modules.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,213 @@
+/**
+ * @fileoverview Restrict usage of specified node modules.
+ * @author Christian Schulz
+ * @deprecated in ESLint v7.0.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const ignore = require("ignore");
+
+const arrayOfStrings = {
+    type: "array",
+    items: { type: "string" },
+    uniqueItems: true
+};
+
+const arrayOfStringsOrObjects = {
+    type: "array",
+    items: {
+        anyOf: [
+            { type: "string" },
+            {
+                type: "object",
+                properties: {
+                    name: { type: "string" },
+                    message: {
+                        type: "string",
+                        minLength: 1
+                    }
+                },
+                additionalProperties: false,
+                required: ["name"]
+            }
+        ]
+    },
+    uniqueItems: true
+};
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+
+        replacedBy: [],
+
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow specified modules when loaded by `require`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-restricted-modules"
+        },
+
+        schema: {
+            anyOf: [
+                arrayOfStringsOrObjects,
+                {
+                    type: "array",
+                    items: {
+                        type: "object",
+                        properties: {
+                            paths: arrayOfStringsOrObjects,
+                            patterns: arrayOfStrings
+                        },
+                        additionalProperties: false
+                    },
+                    additionalItems: false
+                }
+            ]
+        },
+
+        messages: {
+            defaultMessage: "'{{name}}' module is restricted from being used.",
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            customMessage: "'{{name}}' module is restricted from being used. {{customMessage}}",
+            patternMessage: "'{{name}}' module is restricted from being used by a pattern."
+        }
+    },
+
+    create(context) {
+        const options = Array.isArray(context.options) ? context.options : [];
+        const isPathAndPatternsObject =
+            typeof options[0] === "object" &&
+            (Object.prototype.hasOwnProperty.call(options[0], "paths") || Object.prototype.hasOwnProperty.call(options[0], "patterns"));
+
+        const restrictedPaths = (isPathAndPatternsObject ? options[0].paths : context.options) || [];
+        const restrictedPatterns = (isPathAndPatternsObject ? options[0].patterns : []) || [];
+
+        const restrictedPathMessages = restrictedPaths.reduce((memo, importName) => {
+            if (typeof importName === "string") {
+                memo[importName] = null;
+            } else {
+                memo[importName.name] = importName.message;
+            }
+            return memo;
+        }, {});
+
+        // if no imports are restricted we don't need to check
+        if (Object.keys(restrictedPaths).length === 0 && restrictedPatterns.length === 0) {
+            return {};
+        }
+
+        // relative paths are supported for this rule
+        const ig = ignore({ allowRelativePaths: true }).add(restrictedPatterns);
+
+
+        /**
+         * Function to check if a node is a string literal.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} If the node is a string literal.
+         */
+        function isStringLiteral(node) {
+            return node && node.type === "Literal" && typeof node.value === "string";
+        }
+
+        /**
+         * Function to check if a node is a require call.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} If the node is a require call.
+         */
+        function isRequireCall(node) {
+            return node.callee.type === "Identifier" && node.callee.name === "require";
+        }
+
+        /**
+         * Extract string from Literal or TemplateLiteral node
+         * @param {ASTNode} node The node to extract from
+         * @returns {string|null} Extracted string or null if node doesn't represent a string
+         */
+        function getFirstArgumentString(node) {
+            if (isStringLiteral(node)) {
+                return node.value.trim();
+            }
+
+            if (astUtils.isStaticTemplateLiteral(node)) {
+                return node.quasis[0].value.cooked.trim();
+            }
+
+            return null;
+        }
+
+        /**
+         * Report a restricted path.
+         * @param {node} node representing the restricted path reference
+         * @param {string} name restricted path
+         * @returns {void}
+         * @private
+         */
+        function reportPath(node, name) {
+            const customMessage = restrictedPathMessages[name];
+            const messageId = customMessage
+                ? "customMessage"
+                : "defaultMessage";
+
+            context.report({
+                node,
+                messageId,
+                data: {
+                    name,
+                    customMessage
+                }
+            });
+        }
+
+        /**
+         * Check if the given name is a restricted path name
+         * @param {string} name name of a variable
+         * @returns {boolean} whether the variable is a restricted path or not
+         * @private
+         */
+        function isRestrictedPath(name) {
+            return Object.prototype.hasOwnProperty.call(restrictedPathMessages, name);
+        }
+
+        return {
+            CallExpression(node) {
+                if (isRequireCall(node)) {
+
+                    // node has arguments
+                    if (node.arguments.length) {
+                        const name = getFirstArgumentString(node.arguments[0]);
+
+                        // if first argument is a string literal or a static string template literal
+                        if (name) {
+
+                            // check if argument value is in restricted modules array
+                            if (isRestrictedPath(name)) {
+                                reportPath(node, name);
+                            }
+
+                            if (restrictedPatterns.length > 0 && ig.ignores(name)) {
+                                context.report({
+                                    node,
+                                    messageId: "patternMessage",
+                                    data: { name }
+                                });
+                            }
+                        }
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-restricted-properties.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-restricted-properties.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-restricted-properties.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,168 @@
+/**
+ * @fileoverview Rule to disallow certain object properties
+ * @author Will Klein & Eli White
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow certain properties on certain objects",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-restricted-properties"
+        },
+
+        schema: {
+            type: "array",
+            items: {
+                anyOf: [ // `object` and `property` are both optional, but at least one of them must be provided.
+                    {
+                        type: "object",
+                        properties: {
+                            object: {
+                                type: "string"
+                            },
+                            property: {
+                                type: "string"
+                            },
+                            message: {
+                                type: "string"
+                            }
+                        },
+                        additionalProperties: false,
+                        required: ["object"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            object: {
+                                type: "string"
+                            },
+                            property: {
+                                type: "string"
+                            },
+                            message: {
+                                type: "string"
+                            }
+                        },
+                        additionalProperties: false,
+                        required: ["property"]
+                    }
+                ]
+            },
+            uniqueItems: true
+        },
+
+        messages: {
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            restrictedObjectProperty: "'{{objectName}}.{{propertyName}}' is restricted from being used.{{message}}",
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            restrictedProperty: "'{{propertyName}}' is restricted from being used.{{message}}"
+        }
+    },
+
+    create(context) {
+        const restrictedCalls = context.options;
+
+        if (restrictedCalls.length === 0) {
+            return {};
+        }
+
+        const restrictedProperties = new Map();
+        const globallyRestrictedObjects = new Map();
+        const globallyRestrictedProperties = new Map();
+
+        restrictedCalls.forEach(option => {
+            const objectName = option.object;
+            const propertyName = option.property;
+
+            if (typeof objectName === "undefined") {
+                globallyRestrictedProperties.set(propertyName, { message: option.message });
+            } else if (typeof propertyName === "undefined") {
+                globallyRestrictedObjects.set(objectName, { message: option.message });
+            } else {
+                if (!restrictedProperties.has(objectName)) {
+                    restrictedProperties.set(objectName, new Map());
+                }
+
+                restrictedProperties.get(objectName).set(propertyName, {
+                    message: option.message
+                });
+            }
+        });
+
+        /**
+         * Checks to see whether a property access is restricted, and reports it if so.
+         * @param {ASTNode} node The node to report
+         * @param {string} objectName The name of the object
+         * @param {string} propertyName The name of the property
+         * @returns {undefined}
+         */
+        function checkPropertyAccess(node, objectName, propertyName) {
+            if (propertyName === null) {
+                return;
+            }
+            const matchedObject = restrictedProperties.get(objectName);
+            const matchedObjectProperty = matchedObject ? matchedObject.get(propertyName) : globallyRestrictedObjects.get(objectName);
+            const globalMatchedProperty = globallyRestrictedProperties.get(propertyName);
+
+            if (matchedObjectProperty) {
+                const message = matchedObjectProperty.message ? ` ${matchedObjectProperty.message}` : "";
+
+                context.report({
+                    node,
+                    messageId: "restrictedObjectProperty",
+                    data: {
+                        objectName,
+                        propertyName,
+                        message
+                    }
+                });
+            } else if (globalMatchedProperty) {
+                const message = globalMatchedProperty.message ? ` ${globalMatchedProperty.message}` : "";
+
+                context.report({
+                    node,
+                    messageId: "restrictedProperty",
+                    data: {
+                        propertyName,
+                        message
+                    }
+                });
+            }
+        }
+
+        return {
+            MemberExpression(node) {
+                checkPropertyAccess(node, node.object && node.object.name, astUtils.getStaticPropertyName(node));
+            },
+            ObjectPattern(node) {
+                let objectName = null;
+
+                if (node.parent.type === "VariableDeclarator") {
+                    if (node.parent.init && node.parent.init.type === "Identifier") {
+                        objectName = node.parent.init.name;
+                    }
+                } else if (node.parent.type === "AssignmentExpression" || node.parent.type === "AssignmentPattern") {
+                    if (node.parent.right.type === "Identifier") {
+                        objectName = node.parent.right.name;
+                    }
+                }
+
+                node.properties.forEach(property => {
+                    checkPropertyAccess(node, objectName, astUtils.getStaticPropertyName(property));
+                });
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-restricted-syntax.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-restricted-syntax.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-restricted-syntax.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,70 @@
+/**
+ * @fileoverview Rule to flag use of certain node types
+ * @author Burak Yigit Kaya
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow specified syntax",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-restricted-syntax"
+        },
+
+        schema: {
+            type: "array",
+            items: {
+                oneOf: [
+                    {
+                        type: "string"
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            selector: { type: "string" },
+                            message: { type: "string" }
+                        },
+                        required: ["selector"],
+                        additionalProperties: false
+                    }
+                ]
+            },
+            uniqueItems: true,
+            minItems: 0
+        },
+
+        messages: {
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            restrictedSyntax: "{{message}}"
+        }
+    },
+
+    create(context) {
+        return context.options.reduce((result, selectorOrObject) => {
+            const isStringFormat = (typeof selectorOrObject === "string");
+            const hasCustomMessage = !isStringFormat && Boolean(selectorOrObject.message);
+
+            const selector = isStringFormat ? selectorOrObject : selectorOrObject.selector;
+            const message = hasCustomMessage ? selectorOrObject.message : `Using '${selector}' is not allowed.`;
+
+            return Object.assign(result, {
+                [selector](node) {
+                    context.report({
+                        node,
+                        messageId: "restrictedSyntax",
+                        data: { message }
+                    });
+                }
+            });
+        }, {});
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-return-assign.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-return-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-return-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,80 @@
+/**
+ * @fileoverview Rule to flag when return statement contains assignment
+ * @author Ilya Volodin
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const SENTINEL_TYPE = /^(?:[a-zA-Z]+?Statement|ArrowFunctionExpression|FunctionExpression|ClassExpression)$/u;
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow assignment operators in `return` statements",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-return-assign"
+        },
+
+        schema: [
+            {
+                enum: ["except-parens", "always"]
+            }
+        ],
+
+        messages: {
+            returnAssignment: "Return statement should not contain assignment.",
+            arrowAssignment: "Arrow function should not return assignment."
+        }
+    },
+
+    create(context) {
+        const always = (context.options[0] || "except-parens") !== "except-parens";
+        const sourceCode = context.sourceCode;
+
+        return {
+            AssignmentExpression(node) {
+                if (!always && astUtils.isParenthesised(sourceCode, node)) {
+                    return;
+                }
+
+                let currentChild = node;
+                let parent = currentChild.parent;
+
+                // Find ReturnStatement or ArrowFunctionExpression in ancestors.
+                while (parent && !SENTINEL_TYPE.test(parent.type)) {
+                    currentChild = parent;
+                    parent = parent.parent;
+                }
+
+                // Reports.
+                if (parent && parent.type === "ReturnStatement") {
+                    context.report({
+                        node: parent,
+                        messageId: "returnAssignment"
+                    });
+                } else if (parent && parent.type === "ArrowFunctionExpression" && parent.body === currentChild) {
+                    context.report({
+                        node: parent,
+                        messageId: "arrowAssignment"
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-return-await.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-return-await.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-return-await.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,135 @@
+/**
+ * @fileoverview Disallows unnecessary `return await`
+ * @author Jordan Harband
+ * @deprecated in ESLint v8.46.0
+ */
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        hasSuggestions: true,
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow unnecessary `return await`",
+
+            recommended: false,
+
+            url: "https://eslint.org/docs/latest/rules/no-return-await"
+        },
+
+        fixable: null,
+
+        deprecated: true,
+
+        replacedBy: [],
+
+        schema: [
+        ],
+
+        messages: {
+            removeAwait: "Remove redundant `await`.",
+            redundantUseOfAwait: "Redundant use of `await` on a return value."
+        }
+    },
+
+    create(context) {
+
+        /**
+         * Reports a found unnecessary `await` expression.
+         * @param {ASTNode} node The node representing the `await` expression to report
+         * @returns {void}
+         */
+        function reportUnnecessaryAwait(node) {
+            context.report({
+                node: context.sourceCode.getFirstToken(node),
+                loc: node.loc,
+                messageId: "redundantUseOfAwait",
+                suggest: [
+                    {
+                        messageId: "removeAwait",
+                        fix(fixer) {
+                            const sourceCode = context.sourceCode;
+                            const [awaitToken, tokenAfterAwait] = sourceCode.getFirstTokens(node, 2);
+
+                            const areAwaitAndAwaitedExpressionOnTheSameLine = awaitToken.loc.start.line === tokenAfterAwait.loc.start.line;
+
+                            if (!areAwaitAndAwaitedExpressionOnTheSameLine) {
+                                return null;
+                            }
+
+                            const [startOfAwait, endOfAwait] = awaitToken.range;
+
+                            const characterAfterAwait = sourceCode.text[endOfAwait];
+                            const trimLength = characterAfterAwait === " " ? 1 : 0;
+
+                            const range = [startOfAwait, endOfAwait + trimLength];
+
+                            return fixer.removeRange(range);
+                        }
+                    }
+                ]
+
+            });
+        }
+
+        /**
+         * Determines whether a thrown error from this node will be caught/handled within this function rather than immediately halting
+         * this function. For example, a statement in a `try` block will always have an error handler. A statement in
+         * a `catch` block will only have an error handler if there is also a `finally` block.
+         * @param {ASTNode} node A node representing a location where an could be thrown
+         * @returns {boolean} `true` if a thrown error will be caught/handled in this function
+         */
+        function hasErrorHandler(node) {
+            let ancestor = node;
+
+            while (!astUtils.isFunction(ancestor) && ancestor.type !== "Program") {
+                if (ancestor.parent.type === "TryStatement" && (ancestor === ancestor.parent.block || ancestor === ancestor.parent.handler && ancestor.parent.finalizer)) {
+                    return true;
+                }
+                ancestor = ancestor.parent;
+            }
+            return false;
+        }
+
+        /**
+         * Checks if a node is placed in tail call position. Once `return` arguments (or arrow function expressions) can be a complex expression,
+         * an `await` expression could or could not be unnecessary by the definition of this rule. So we're looking for `await` expressions that are in tail position.
+         * @param {ASTNode} node A node representing the `await` expression to check
+         * @returns {boolean} The checking result
+         */
+        function isInTailCallPosition(node) {
+            if (node.parent.type === "ArrowFunctionExpression") {
+                return true;
+            }
+            if (node.parent.type === "ReturnStatement") {
+                return !hasErrorHandler(node.parent);
+            }
+            if (node.parent.type === "ConditionalExpression" && (node === node.parent.consequent || node === node.parent.alternate)) {
+                return isInTailCallPosition(node.parent);
+            }
+            if (node.parent.type === "LogicalExpression" && node === node.parent.right) {
+                return isInTailCallPosition(node.parent);
+            }
+            if (node.parent.type === "SequenceExpression" && node === node.parent.expressions[node.parent.expressions.length - 1]) {
+                return isInTailCallPosition(node.parent);
+            }
+            return false;
+        }
+
+        return {
+            AwaitExpression(node) {
+                if (isInTailCallPosition(node) && !hasErrorHandler(node)) {
+                    reportUnnecessaryAwait(node);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-script-url.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-script-url.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-script-url.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,61 @@
+/**
+ * @fileoverview Rule to flag when using javascript: urls
+ * @author Ilya Volodin
+ */
+/* eslint no-script-url: 0 -- Code is checking to report such URLs */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `javascript:` urls",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-script-url"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpectedScriptURL: "Script URL is a form of eval."
+        }
+    },
+
+    create(context) {
+
+        /**
+         * Check whether a node's static value starts with "javascript:" or not.
+         * And report an error for unexpected script URL.
+         * @param {ASTNode} node node to check
+         * @returns {void}
+         */
+        function check(node) {
+            const value = astUtils.getStaticStringValue(node);
+
+            if (typeof value === "string" && value.toLowerCase().indexOf("javascript:") === 0) {
+                context.report({ node, messageId: "unexpectedScriptURL" });
+            }
+        }
+        return {
+            Literal(node) {
+                if (node.value && typeof node.value === "string") {
+                    check(node);
+                }
+            },
+            TemplateLiteral(node) {
+                if (!(node.parent && node.parent.type === "TaggedTemplateExpression")) {
+                    check(node);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-self-assign.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-self-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-self-assign.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,183 @@
+/**
+ * @fileoverview Rule to disallow assignments where both sides are exactly the same
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const SPACES = /\s+/gu;
+
+/**
+ * Traverses 2 Pattern nodes in parallel, then reports self-assignments.
+ * @param {ASTNode|null} left A left node to traverse. This is a Pattern or
+ *      a Property.
+ * @param {ASTNode|null} right A right node to traverse. This is a Pattern or
+ *      a Property.
+ * @param {boolean} props The flag to check member expressions as well.
+ * @param {Function} report A callback function to report.
+ * @returns {void}
+ */
+function eachSelfAssignment(left, right, props, report) {
+    if (!left || !right) {
+
+        // do nothing
+    } else if (
+        left.type === "Identifier" &&
+        right.type === "Identifier" &&
+        left.name === right.name
+    ) {
+        report(right);
+    } else if (
+        left.type === "ArrayPattern" &&
+        right.type === "ArrayExpression"
+    ) {
+        const end = Math.min(left.elements.length, right.elements.length);
+
+        for (let i = 0; i < end; ++i) {
+            const leftElement = left.elements[i];
+            const rightElement = right.elements[i];
+
+            // Avoid cases such as [...a] = [...a, 1]
+            if (
+                leftElement &&
+                leftElement.type === "RestElement" &&
+                i < right.elements.length - 1
+            ) {
+                break;
+            }
+
+            eachSelfAssignment(leftElement, rightElement, props, report);
+
+            // After a spread element, those indices are unknown.
+            if (rightElement && rightElement.type === "SpreadElement") {
+                break;
+            }
+        }
+    } else if (
+        left.type === "RestElement" &&
+        right.type === "SpreadElement"
+    ) {
+        eachSelfAssignment(left.argument, right.argument, props, report);
+    } else if (
+        left.type === "ObjectPattern" &&
+        right.type === "ObjectExpression" &&
+        right.properties.length >= 1
+    ) {
+
+        /*
+         * Gets the index of the last spread property.
+         * It's possible to overwrite properties followed by it.
+         */
+        let startJ = 0;
+
+        for (let i = right.properties.length - 1; i >= 0; --i) {
+            const propType = right.properties[i].type;
+
+            if (propType === "SpreadElement" || propType === "ExperimentalSpreadProperty") {
+                startJ = i + 1;
+                break;
+            }
+        }
+
+        for (let i = 0; i < left.properties.length; ++i) {
+            for (let j = startJ; j < right.properties.length; ++j) {
+                eachSelfAssignment(
+                    left.properties[i],
+                    right.properties[j],
+                    props,
+                    report
+                );
+            }
+        }
+    } else if (
+        left.type === "Property" &&
+        right.type === "Property" &&
+        right.kind === "init" &&
+        !right.method
+    ) {
+        const leftName = astUtils.getStaticPropertyName(left);
+
+        if (leftName !== null && leftName === astUtils.getStaticPropertyName(right)) {
+            eachSelfAssignment(left.value, right.value, props, report);
+        }
+    } else if (
+        props &&
+        astUtils.skipChainExpression(left).type === "MemberExpression" &&
+        astUtils.skipChainExpression(right).type === "MemberExpression" &&
+        astUtils.isSameReference(left, right)
+    ) {
+        report(right);
+    }
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow assignments where both sides are exactly the same",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-self-assign"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    props: {
+                        type: "boolean",
+                        default: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            selfAssignment: "'{{name}}' is assigned to itself."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const [{ props = true } = {}] = context.options;
+
+        /**
+         * Reports a given node as self assignments.
+         * @param {ASTNode} node A node to report. This is an Identifier node.
+         * @returns {void}
+         */
+        function report(node) {
+            context.report({
+                node,
+                messageId: "selfAssignment",
+                data: {
+                    name: sourceCode.getText(node).replace(SPACES, "")
+                }
+            });
+        }
+
+        return {
+            AssignmentExpression(node) {
+                if (["=", "&&=", "||=", "??="].includes(node.operator)) {
+                    eachSelfAssignment(node.left, node.right, props, report);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-self-compare.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-self-compare.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-self-compare.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,60 @@
+/**
+ * @fileoverview Rule to flag comparison where left part is the same as the right
+ * part.
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow comparisons where both sides are exactly the same",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-self-compare"
+        },
+
+        schema: [],
+
+        messages: {
+            comparingToSelf: "Comparing to itself is potentially pointless."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Determines whether two nodes are composed of the same tokens.
+         * @param {ASTNode} nodeA The first node
+         * @param {ASTNode} nodeB The second node
+         * @returns {boolean} true if the nodes have identical token representations
+         */
+        function hasSameTokens(nodeA, nodeB) {
+            const tokensA = sourceCode.getTokens(nodeA);
+            const tokensB = sourceCode.getTokens(nodeB);
+
+            return tokensA.length === tokensB.length &&
+                tokensA.every((token, index) => token.type === tokensB[index].type && token.value === tokensB[index].value);
+        }
+
+        return {
+
+            BinaryExpression(node) {
+                const operators = new Set(["===", "==", "!==", "!=", ">", "<", ">=", "<="]);
+
+                if (operators.has(node.operator) && hasSameTokens(node.left, node.right)) {
+                    context.report({ node, messageId: "comparingToSelf" });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-sequences.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-sequences.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-sequences.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,138 @@
+/**
+ * @fileoverview Rule to flag use of comma operator
+ * @author Brandon Mills
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const DEFAULT_OPTIONS = {
+    allowInParentheses: true
+};
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow comma operators",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-sequences"
+        },
+
+        schema: [{
+            properties: {
+                allowInParentheses: {
+                    type: "boolean",
+                    default: true
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            unexpectedCommaExpression: "Unexpected use of comma operator."
+        }
+    },
+
+    create(context) {
+        const options = Object.assign({}, DEFAULT_OPTIONS, context.options[0]);
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Parts of the grammar that are required to have parens.
+         */
+        const parenthesized = {
+            DoWhileStatement: "test",
+            IfStatement: "test",
+            SwitchStatement: "discriminant",
+            WhileStatement: "test",
+            WithStatement: "object",
+            ArrowFunctionExpression: "body"
+
+            /*
+             * Omitting CallExpression - commas are parsed as argument separators
+             * Omitting NewExpression - commas are parsed as argument separators
+             * Omitting ForInStatement - parts aren't individually parenthesised
+             * Omitting ForStatement - parts aren't individually parenthesised
+             */
+        };
+
+        /**
+         * Determines whether a node is required by the grammar to be wrapped in
+         * parens, e.g. the test of an if statement.
+         * @param {ASTNode} node The AST node
+         * @returns {boolean} True if parens around node belong to parent node.
+         */
+        function requiresExtraParens(node) {
+            return node.parent && parenthesized[node.parent.type] &&
+                    node === node.parent[parenthesized[node.parent.type]];
+        }
+
+        /**
+         * Check if a node is wrapped in parens.
+         * @param {ASTNode} node The AST node
+         * @returns {boolean} True if the node has a paren on each side.
+         */
+        function isParenthesised(node) {
+            return astUtils.isParenthesised(sourceCode, node);
+        }
+
+        /**
+         * Check if a node is wrapped in two levels of parens.
+         * @param {ASTNode} node The AST node
+         * @returns {boolean} True if two parens surround the node on each side.
+         */
+        function isParenthesisedTwice(node) {
+            const previousToken = sourceCode.getTokenBefore(node, 1),
+                nextToken = sourceCode.getTokenAfter(node, 1);
+
+            return isParenthesised(node) && previousToken && nextToken &&
+                astUtils.isOpeningParenToken(previousToken) && previousToken.range[1] <= node.range[0] &&
+                astUtils.isClosingParenToken(nextToken) && nextToken.range[0] >= node.range[1];
+        }
+
+        return {
+            SequenceExpression(node) {
+
+                // Always allow sequences in for statement update
+                if (node.parent.type === "ForStatement" &&
+                        (node === node.parent.init || node === node.parent.update)) {
+                    return;
+                }
+
+                // Wrapping a sequence in extra parens indicates intent
+                if (options.allowInParentheses) {
+                    if (requiresExtraParens(node)) {
+                        if (isParenthesisedTwice(node)) {
+                            return;
+                        }
+                    } else {
+                        if (isParenthesised(node)) {
+                            return;
+                        }
+                    }
+                }
+
+                const firstCommaToken = sourceCode.getTokenAfter(node.expressions[0], astUtils.isCommaToken);
+
+                context.report({ node, loc: firstCommaToken.loc, messageId: "unexpectedCommaExpression" });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-setter-return.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-setter-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-setter-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,226 @@
+/**
+ * @fileoverview Rule to disallow returning values from setters
+ * @author Milos Djermanovic
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const { findVariable } = require("@eslint-community/eslint-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines whether the given identifier node is a reference to a global variable.
+ * @param {ASTNode} node `Identifier` node to check.
+ * @param {Scope} scope Scope to which the node belongs.
+ * @returns {boolean} True if the identifier is a reference to a global variable.
+ */
+function isGlobalReference(node, scope) {
+    const variable = findVariable(scope, node);
+
+    return variable !== null && variable.scope.type === "global" && variable.defs.length === 0;
+}
+
+/**
+ * Determines whether the given node is an argument of the specified global method call, at the given `index` position.
+ * E.g., for given `index === 1`, this function checks for `objectName.methodName(foo, node)`, where objectName is a global variable.
+ * @param {ASTNode} node The node to check.
+ * @param {Scope} scope Scope to which the node belongs.
+ * @param {string} objectName Name of the global object.
+ * @param {string} methodName Name of the method.
+ * @param {number} index The given position.
+ * @returns {boolean} `true` if the node is argument at the given position.
+ */
+function isArgumentOfGlobalMethodCall(node, scope, objectName, methodName, index) {
+    const callNode = node.parent;
+
+    return callNode.type === "CallExpression" &&
+        callNode.arguments[index] === node &&
+        astUtils.isSpecificMemberAccess(callNode.callee, objectName, methodName) &&
+        isGlobalReference(astUtils.skipChainExpression(callNode.callee).object, scope);
+}
+
+/**
+ * Determines whether the given node is used as a property descriptor.
+ * @param {ASTNode} node The node to check.
+ * @param {Scope} scope Scope to which the node belongs.
+ * @returns {boolean} `true` if the node is a property descriptor.
+ */
+function isPropertyDescriptor(node, scope) {
+    if (
+        isArgumentOfGlobalMethodCall(node, scope, "Object", "defineProperty", 2) ||
+        isArgumentOfGlobalMethodCall(node, scope, "Reflect", "defineProperty", 2)
+    ) {
+        return true;
+    }
+
+    const parent = node.parent;
+
+    if (
+        parent.type === "Property" &&
+        parent.value === node
+    ) {
+        const grandparent = parent.parent;
+
+        if (
+            grandparent.type === "ObjectExpression" &&
+            (
+                isArgumentOfGlobalMethodCall(grandparent, scope, "Object", "create", 1) ||
+                isArgumentOfGlobalMethodCall(grandparent, scope, "Object", "defineProperties", 1)
+            )
+        ) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+/**
+ * Determines whether the given function node is used as a setter function.
+ * @param {ASTNode} node The node to check.
+ * @param {Scope} scope Scope to which the node belongs.
+ * @returns {boolean} `true` if the node is a setter.
+ */
+function isSetter(node, scope) {
+    const parent = node.parent;
+
+    if (
+        (parent.type === "Property" || parent.type === "MethodDefinition") &&
+        parent.kind === "set" &&
+        parent.value === node
+    ) {
+
+        // Setter in an object literal or in a class
+        return true;
+    }
+
+    if (
+        parent.type === "Property" &&
+        parent.value === node &&
+        astUtils.getStaticPropertyName(parent) === "set" &&
+        parent.parent.type === "ObjectExpression" &&
+        isPropertyDescriptor(parent.parent, scope)
+    ) {
+
+        // Setter in a property descriptor
+        return true;
+    }
+
+    return false;
+}
+
+/**
+ * Finds function's outer scope.
+ * @param {Scope} scope Function's own scope.
+ * @returns {Scope} Function's outer scope.
+ */
+function getOuterScope(scope) {
+    const upper = scope.upper;
+
+    if (upper.type === "function-expression-name") {
+        return upper.upper;
+    }
+
+    return upper;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow returning values from setters",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-setter-return"
+        },
+
+        schema: [],
+
+        messages: {
+            returnsValue: "Setter cannot return a value."
+        }
+    },
+
+    create(context) {
+        let funcInfo = null;
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Creates and pushes to the stack a function info object for the given function node.
+         * @param {ASTNode} node The function node.
+         * @returns {void}
+         */
+        function enterFunction(node) {
+            const outerScope = getOuterScope(sourceCode.getScope(node));
+
+            funcInfo = {
+                upper: funcInfo,
+                isSetter: isSetter(node, outerScope)
+            };
+        }
+
+        /**
+         * Pops the current function info object from the stack.
+         * @returns {void}
+         */
+        function exitFunction() {
+            funcInfo = funcInfo.upper;
+        }
+
+        /**
+         * Reports the given node.
+         * @param {ASTNode} node Node to report.
+         * @returns {void}
+         */
+        function report(node) {
+            context.report({ node, messageId: "returnsValue" });
+        }
+
+        return {
+
+            /*
+             * Function declarations cannot be setters, but we still have to track them in the `funcInfo` stack to avoid
+             * false positives, because a ReturnStatement node can belong to a function declaration inside a setter.
+             *
+             * Note: A previously declared function can be referenced and actually used as a setter in a property descriptor,
+             * but that's out of scope for this rule.
+             */
+            FunctionDeclaration: enterFunction,
+            FunctionExpression: enterFunction,
+            ArrowFunctionExpression(node) {
+                enterFunction(node);
+
+                if (funcInfo.isSetter && node.expression) {
+
+                    // { set: foo => bar } property descriptor. Report implicit return 'bar' as the equivalent for a return statement.
+                    report(node.body);
+                }
+            },
+
+            "FunctionDeclaration:exit": exitFunction,
+            "FunctionExpression:exit": exitFunction,
+            "ArrowFunctionExpression:exit": exitFunction,
+
+            ReturnStatement(node) {
+
+                // Global returns (e.g., at the top level of a Node module) don't have `funcInfo`.
+                if (funcInfo && funcInfo.isSetter && node.argument) {
+                    report(node);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-shadow-restricted-names.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-shadow-restricted-names.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-shadow-restricted-names.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,65 @@
+/**
+ * @fileoverview Disallow shadowing of NaN, undefined, and Infinity (ES5 section 15.1.1)
+ * @author Michael Ficarra
+ */
+"use strict";
+
+/**
+ * Determines if a variable safely shadows undefined.
+ * This is the case when a variable named `undefined` is never assigned to a value (i.e. it always shares the same value
+ * as the global).
+ * @param {eslintScope.Variable} variable The variable to check
+ * @returns {boolean} true if this variable safely shadows `undefined`
+ */
+function safelyShadowsUndefined(variable) {
+    return variable.name === "undefined" &&
+        variable.references.every(ref => !ref.isWrite()) &&
+        variable.defs.every(def => def.node.type === "VariableDeclarator" && def.node.init === null);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow identifiers from shadowing restricted names",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-shadow-restricted-names"
+        },
+
+        schema: [],
+
+        messages: {
+            shadowingRestrictedName: "Shadowing of global property '{{name}}'."
+        }
+    },
+
+    create(context) {
+
+
+        const RESTRICTED = new Set(["undefined", "NaN", "Infinity", "arguments", "eval"]);
+        const sourceCode = context.sourceCode;
+
+        return {
+            "VariableDeclaration, :function, CatchClause"(node) {
+                for (const variable of sourceCode.getDeclaredVariables(node)) {
+                    if (variable.defs.length > 0 && RESTRICTED.has(variable.name) && !safelyShadowsUndefined(variable)) {
+                        context.report({
+                            node: variable.defs[0].name,
+                            messageId: "shadowingRestrictedName",
+                            data: {
+                                name: variable.name
+                            }
+                        });
+                    }
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-shadow.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-shadow.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-shadow.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,336 @@
+/**
+ * @fileoverview Rule to flag on declaring variables already declared in the outer scope
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const FUNC_EXPR_NODE_TYPES = new Set(["ArrowFunctionExpression", "FunctionExpression"]);
+const CALL_EXPR_NODE_TYPE = new Set(["CallExpression"]);
+const FOR_IN_OF_TYPE = /^For(?:In|Of)Statement$/u;
+const SENTINEL_TYPE = /^(?:(?:Function|Class)(?:Declaration|Expression)|ArrowFunctionExpression|CatchClause|ImportDeclaration|ExportNamedDeclaration)$/u;
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow variable declarations from shadowing variables declared in the outer scope",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-shadow"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    builtinGlobals: { type: "boolean", default: false },
+                    hoist: { enum: ["all", "functions", "never"], default: "functions" },
+                    allow: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        }
+                    },
+                    ignoreOnInitialization: { type: "boolean", default: false }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            noShadow: "'{{name}}' is already declared in the upper scope on line {{shadowedLine}} column {{shadowedColumn}}.",
+            noShadowGlobal: "'{{name}}' is already a global variable."
+        }
+    },
+
+    create(context) {
+
+        const options = {
+            builtinGlobals: context.options[0] && context.options[0].builtinGlobals,
+            hoist: (context.options[0] && context.options[0].hoist) || "functions",
+            allow: (context.options[0] && context.options[0].allow) || [],
+            ignoreOnInitialization: context.options[0] && context.options[0].ignoreOnInitialization
+        };
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Checks whether or not a given location is inside of the range of a given node.
+         * @param {ASTNode} node An node to check.
+         * @param {number} location A location to check.
+         * @returns {boolean} `true` if the location is inside of the range of the node.
+         */
+        function isInRange(node, location) {
+            return node && node.range[0] <= location && location <= node.range[1];
+        }
+
+        /**
+         * Searches from the current node through its ancestry to find a matching node.
+         * @param {ASTNode} node a node to get.
+         * @param {(node: ASTNode) => boolean} match a callback that checks whether or not the node verifies its condition or not.
+         * @returns {ASTNode|null} the matching node.
+         */
+        function findSelfOrAncestor(node, match) {
+            let currentNode = node;
+
+            while (currentNode && !match(currentNode)) {
+                currentNode = currentNode.parent;
+            }
+            return currentNode;
+        }
+
+        /**
+         * Finds function's outer scope.
+         * @param {Scope} scope Function's own scope.
+         * @returns {Scope} Function's outer scope.
+         */
+        function getOuterScope(scope) {
+            const upper = scope.upper;
+
+            if (upper.type === "function-expression-name") {
+                return upper.upper;
+            }
+            return upper;
+        }
+
+        /**
+         * Checks if a variable and a shadowedVariable have the same init pattern ancestor.
+         * @param {Object} variable a variable to check.
+         * @param {Object} shadowedVariable a shadowedVariable to check.
+         * @returns {boolean} Whether or not the variable and the shadowedVariable have the same init pattern ancestor.
+         */
+        function isInitPatternNode(variable, shadowedVariable) {
+            const outerDef = shadowedVariable.defs[0];
+
+            if (!outerDef) {
+                return false;
+            }
+
+            const { variableScope } = variable.scope;
+
+
+            if (!(FUNC_EXPR_NODE_TYPES.has(variableScope.block.type) && getOuterScope(variableScope) === shadowedVariable.scope)) {
+                return false;
+            }
+
+            const fun = variableScope.block;
+            const { parent } = fun;
+
+            const callExpression = findSelfOrAncestor(
+                parent,
+                node => CALL_EXPR_NODE_TYPE.has(node.type)
+            );
+
+            if (!callExpression) {
+                return false;
+            }
+
+            let node = outerDef.name;
+            const location = callExpression.range[1];
+
+            while (node) {
+                if (node.type === "VariableDeclarator") {
+                    if (isInRange(node.init, location)) {
+                        return true;
+                    }
+                    if (FOR_IN_OF_TYPE.test(node.parent.parent.type) &&
+                        isInRange(node.parent.parent.right, location)
+                    ) {
+                        return true;
+                    }
+                    break;
+                } else if (node.type === "AssignmentPattern") {
+                    if (isInRange(node.right, location)) {
+                        return true;
+                    }
+                } else if (SENTINEL_TYPE.test(node.type)) {
+                    break;
+                }
+
+                node = node.parent;
+            }
+
+            return false;
+        }
+
+        /**
+         * Check if variable name is allowed.
+         * @param {ASTNode} variable The variable to check.
+         * @returns {boolean} Whether or not the variable name is allowed.
+         */
+        function isAllowed(variable) {
+            return options.allow.includes(variable.name);
+        }
+
+        /**
+         * Checks if a variable of the class name in the class scope of ClassDeclaration.
+         *
+         * ClassDeclaration creates two variables of its name into its outer scope and its class scope.
+         * So we should ignore the variable in the class scope.
+         * @param {Object} variable The variable to check.
+         * @returns {boolean} Whether or not the variable of the class name in the class scope of ClassDeclaration.
+         */
+        function isDuplicatedClassNameVariable(variable) {
+            const block = variable.scope.block;
+
+            return block.type === "ClassDeclaration" && block.id === variable.identifiers[0];
+        }
+
+        /**
+         * Checks if a variable is inside the initializer of scopeVar.
+         *
+         * To avoid reporting at declarations such as `var a = function a() {};`.
+         * But it should report `var a = function(a) {};` or `var a = function() { function a() {} };`.
+         * @param {Object} variable The variable to check.
+         * @param {Object} scopeVar The scope variable to look for.
+         * @returns {boolean} Whether or not the variable is inside initializer of scopeVar.
+         */
+        function isOnInitializer(variable, scopeVar) {
+            const outerScope = scopeVar.scope;
+            const outerDef = scopeVar.defs[0];
+            const outer = outerDef && outerDef.parent && outerDef.parent.range;
+            const innerScope = variable.scope;
+            const innerDef = variable.defs[0];
+            const inner = innerDef && innerDef.name.range;
+
+            return (
+                outer &&
+                 inner &&
+                 outer[0] < inner[0] &&
+                 inner[1] < outer[1] &&
+                 ((innerDef.type === "FunctionName" && innerDef.node.type === "FunctionExpression") || innerDef.node.type === "ClassExpression") &&
+                 outerScope === innerScope.upper
+            );
+        }
+
+        /**
+         * Get a range of a variable's identifier node.
+         * @param {Object} variable The variable to get.
+         * @returns {Array|undefined} The range of the variable's identifier node.
+         */
+        function getNameRange(variable) {
+            const def = variable.defs[0];
+
+            return def && def.name.range;
+        }
+
+        /**
+         * Get declared line and column of a variable.
+         * @param {eslint-scope.Variable} variable The variable to get.
+         * @returns {Object} The declared line and column of the variable.
+         */
+        function getDeclaredLocation(variable) {
+            const identifier = variable.identifiers[0];
+            let obj;
+
+            if (identifier) {
+                obj = {
+                    global: false,
+                    line: identifier.loc.start.line,
+                    column: identifier.loc.start.column + 1
+                };
+            } else {
+                obj = {
+                    global: true
+                };
+            }
+            return obj;
+        }
+
+        /**
+         * Checks if a variable is in TDZ of scopeVar.
+         * @param {Object} variable The variable to check.
+         * @param {Object} scopeVar The variable of TDZ.
+         * @returns {boolean} Whether or not the variable is in TDZ of scopeVar.
+         */
+        function isInTdz(variable, scopeVar) {
+            const outerDef = scopeVar.defs[0];
+            const inner = getNameRange(variable);
+            const outer = getNameRange(scopeVar);
+
+            return (
+                inner &&
+                 outer &&
+                 inner[1] < outer[0] &&
+
+                 // Excepts FunctionDeclaration if is {"hoist":"function"}.
+                 (options.hoist !== "functions" || !outerDef || outerDef.node.type !== "FunctionDeclaration")
+            );
+        }
+
+        /**
+         * Checks the current context for shadowed variables.
+         * @param {Scope} scope Fixme
+         * @returns {void}
+         */
+        function checkForShadows(scope) {
+            const variables = scope.variables;
+
+            for (let i = 0; i < variables.length; ++i) {
+                const variable = variables[i];
+
+                // Skips "arguments" or variables of a class name in the class scope of ClassDeclaration.
+                if (variable.identifiers.length === 0 ||
+                     isDuplicatedClassNameVariable(variable) ||
+                     isAllowed(variable)
+                ) {
+                    continue;
+                }
+
+                // Gets shadowed variable.
+                const shadowed = astUtils.getVariableByName(scope.upper, variable.name);
+
+                if (shadowed &&
+                      (shadowed.identifiers.length > 0 || (options.builtinGlobals && "writeable" in shadowed)) &&
+                      !isOnInitializer(variable, shadowed) &&
+                      !(options.ignoreOnInitialization && isInitPatternNode(variable, shadowed)) &&
+                      !(options.hoist !== "all" && isInTdz(variable, shadowed))
+                ) {
+                    const location = getDeclaredLocation(shadowed);
+                    const messageId = location.global ? "noShadowGlobal" : "noShadow";
+                    const data = { name: variable.name };
+
+                    if (!location.global) {
+                        data.shadowedLine = location.line;
+                        data.shadowedColumn = location.column;
+                    }
+                    context.report({
+                        node: variable.identifiers[0],
+                        messageId,
+                        data
+                    });
+                }
+            }
+        }
+
+        return {
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
+                const stack = globalScope.childScopes.slice();
+
+                while (stack.length) {
+                    const scope = stack.pop();
+
+                    stack.push(...scope.childScopes);
+                    checkForShadows(scope);
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-spaced-func.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-spaced-func.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-spaced-func.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,83 @@
+/**
+ * @fileoverview Rule to check that spaced function application
+ * @author Matt DuVall <http://www.mattduvall.com>
+ * @deprecated in ESLint v3.3.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "Disallow spacing between function identifiers and their applications (deprecated)",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-spaced-func"
+        },
+
+        deprecated: true,
+
+        replacedBy: ["func-call-spacing"],
+
+        fixable: "whitespace",
+        schema: [],
+
+        messages: {
+            noSpacedFunction: "Unexpected space between function name and paren."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Check if open space is present in a function name
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function detectOpenSpaces(node) {
+            const lastCalleeToken = sourceCode.getLastToken(node.callee);
+            let prevToken = lastCalleeToken,
+                parenToken = sourceCode.getTokenAfter(lastCalleeToken);
+
+            // advances to an open parenthesis.
+            while (
+                parenToken &&
+                parenToken.range[1] < node.range[1] &&
+                parenToken.value !== "("
+            ) {
+                prevToken = parenToken;
+                parenToken = sourceCode.getTokenAfter(parenToken);
+            }
+
+            // look for a space between the callee and the open paren
+            if (parenToken &&
+                parenToken.range[1] < node.range[1] &&
+                sourceCode.isSpaceBetweenTokens(prevToken, parenToken)
+            ) {
+                context.report({
+                    node,
+                    loc: lastCalleeToken.loc.start,
+                    messageId: "noSpacedFunction",
+                    fix(fixer) {
+                        return fixer.removeRange([prevToken.range[1], parenToken.range[0]]);
+                    }
+                });
+            }
+        }
+
+        return {
+            CallExpression: detectOpenSpaces,
+            NewExpression: detectOpenSpaces
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-sparse-arrays.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-sparse-arrays.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-sparse-arrays.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,50 @@
+/**
+ * @fileoverview Disallow sparse arrays
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow sparse arrays",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-sparse-arrays"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpectedSparseArray: "Unexpected comma in middle of array."
+        }
+    },
+
+    create(context) {
+
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+
+            ArrayExpression(node) {
+
+                const emptySpot = node.elements.includes(null);
+
+                if (emptySpot) {
+                    context.report({ node, messageId: "unexpectedSparseArray" });
+                }
+            }
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-sync.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-sync.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-sync.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,64 @@
+/**
+ * @fileoverview Rule to check for properties whose identifier ends with the string Sync
+ * @author Matt DuVall<http://mattduvall.com/>
+ * @deprecated in ESLint v7.0.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+
+        replacedBy: [],
+
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow synchronous methods",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-sync"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowAtRootLevel: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            noSync: "Unexpected sync method: '{{propertyName}}'."
+        }
+    },
+
+    create(context) {
+        const selector = context.options[0] && context.options[0].allowAtRootLevel
+            ? ":function MemberExpression[property.name=/.*Sync$/]"
+            : "MemberExpression[property.name=/.*Sync$/]";
+
+        return {
+            [selector](node) {
+                context.report({
+                    node,
+                    messageId: "noSync",
+                    data: {
+                        propertyName: node.property.name
+                    }
+                });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-tabs.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-tabs.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-tabs.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,81 @@
+/**
+ * @fileoverview Rule to check for tabs inside a file
+ * @author Gyandeep Singh
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const tabRegex = /\t+/gu;
+const anyNonWhitespaceRegex = /\S/u;
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Disallow all tabs",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-tabs"
+        },
+        schema: [{
+            type: "object",
+            properties: {
+                allowIndentationTabs: {
+                    type: "boolean",
+                    default: false
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            unexpectedTab: "Unexpected tab character."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const allowIndentationTabs = context.options && context.options[0] && context.options[0].allowIndentationTabs;
+
+        return {
+            Program(node) {
+                sourceCode.getLines().forEach((line, index) => {
+                    let match;
+
+                    while ((match = tabRegex.exec(line)) !== null) {
+                        if (allowIndentationTabs && !anyNonWhitespaceRegex.test(line.slice(0, match.index))) {
+                            continue;
+                        }
+
+                        context.report({
+                            node,
+                            loc: {
+                                start: {
+                                    line: index + 1,
+                                    column: match.index
+                                },
+                                end: {
+                                    line: index + 1,
+                                    column: match.index + match[0].length
+                                }
+                            },
+                            messageId: "unexpectedTab"
+                        });
+                    }
+                });
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-template-curly-in-string.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-template-curly-in-string.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-template-curly-in-string.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,44 @@
+/**
+ * @fileoverview Warn when using template string syntax in regular strings
+ * @author Jeroen Engels
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow template literal placeholder syntax in regular strings",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-template-curly-in-string"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpectedTemplateExpression: "Unexpected template string expression."
+        }
+    },
+
+    create(context) {
+        const regex = /\$\{[^}]+\}/u;
+
+        return {
+            Literal(node) {
+                if (typeof node.value === "string" && regex.test(node.value)) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedTemplateExpression"
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-ternary.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-ternary.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-ternary.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,41 @@
+/**
+ * @fileoverview Rule to flag use of ternary operators.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow ternary operators",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-ternary"
+        },
+
+        schema: [],
+
+        messages: {
+            noTernaryOperator: "Ternary operator used."
+        }
+    },
+
+    create(context) {
+
+        return {
+
+            ConditionalExpression(node) {
+                context.report({ node, messageId: "noTernaryOperator" });
+            }
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-this-before-super.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-this-before-super.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-this-before-super.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,331 @@
+/**
+ * @fileoverview A rule to disallow using `this`/`super` before `super()`.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given node is a constructor.
+ * @param {ASTNode} node A node to check. This node type is one of
+ *   `Program`, `FunctionDeclaration`, `FunctionExpression`, and
+ *   `ArrowFunctionExpression`.
+ * @returns {boolean} `true` if the node is a constructor.
+ */
+function isConstructorFunction(node) {
+    return (
+        node.type === "FunctionExpression" &&
+        node.parent.type === "MethodDefinition" &&
+        node.parent.kind === "constructor"
+    );
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow `this`/`super` before calling `super()` in constructors",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-this-before-super"
+        },
+
+        schema: [],
+
+        messages: {
+            noBeforeSuper: "'{{kind}}' is not allowed before 'super()'."
+        }
+    },
+
+    create(context) {
+
+        /*
+         * Information for each constructor.
+         * - upper:      Information of the upper constructor.
+         * - hasExtends: A flag which shows whether the owner class has a valid
+         *   `extends` part.
+         * - scope:      The scope of the owner class.
+         * - codePath:   The code path of this constructor.
+         */
+        let funcInfo = null;
+
+        /*
+         * Information for each code path segment.
+         * Each key is the id of a code path segment.
+         * Each value is an object:
+         * - superCalled:  The flag which shows `super()` called in all code paths.
+         * - invalidNodes: The array of invalid ThisExpression and Super nodes.
+         */
+        let segInfoMap = Object.create(null);
+
+        /**
+         * Gets whether or not `super()` is called in a given code path segment.
+         * @param {CodePathSegment} segment A code path segment to get.
+         * @returns {boolean} `true` if `super()` is called.
+         */
+        function isCalled(segment) {
+            return !segment.reachable || segInfoMap[segment.id].superCalled;
+        }
+
+        /**
+         * Checks whether or not this is in a constructor.
+         * @returns {boolean} `true` if this is in a constructor.
+         */
+        function isInConstructorOfDerivedClass() {
+            return Boolean(funcInfo && funcInfo.isConstructor && funcInfo.hasExtends);
+        }
+
+        /**
+         * Determines if every segment in a set has been called.
+         * @param {Set<CodePathSegment>} segments The segments to search.
+         * @returns {boolean} True if every segment has been called; false otherwise.
+         */
+        function isEverySegmentCalled(segments) {
+            for (const segment of segments) {
+                if (!isCalled(segment)) {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        /**
+         * Checks whether or not this is before `super()` is called.
+         * @returns {boolean} `true` if this is before `super()` is called.
+         */
+        function isBeforeCallOfSuper() {
+            return (
+                isInConstructorOfDerivedClass() &&
+                !isEverySegmentCalled(funcInfo.currentSegments)
+            );
+        }
+
+        /**
+         * Sets a given node as invalid.
+         * @param {ASTNode} node A node to set as invalid. This is one of
+         *      a ThisExpression and a Super.
+         * @returns {void}
+         */
+        function setInvalid(node) {
+            const segments = funcInfo.currentSegments;
+
+            for (const segment of segments) {
+                if (segment.reachable) {
+                    segInfoMap[segment.id].invalidNodes.push(node);
+                }
+            }
+        }
+
+        /**
+         * Sets the current segment as `super` was called.
+         * @returns {void}
+         */
+        function setSuperCalled() {
+            const segments = funcInfo.currentSegments;
+
+            for (const segment of segments) {
+                if (segment.reachable) {
+                    segInfoMap[segment.id].superCalled = true;
+                }
+            }
+        }
+
+        return {
+
+            /**
+             * Adds information of a constructor into the stack.
+             * @param {CodePath} codePath A code path which was started.
+             * @param {ASTNode} node The current node.
+             * @returns {void}
+             */
+            onCodePathStart(codePath, node) {
+                if (isConstructorFunction(node)) {
+
+                    // Class > ClassBody > MethodDefinition > FunctionExpression
+                    const classNode = node.parent.parent.parent;
+
+                    funcInfo = {
+                        upper: funcInfo,
+                        isConstructor: true,
+                        hasExtends: Boolean(
+                            classNode.superClass &&
+                            !astUtils.isNullOrUndefined(classNode.superClass)
+                        ),
+                        codePath,
+                        currentSegments: new Set()
+                    };
+                } else {
+                    funcInfo = {
+                        upper: funcInfo,
+                        isConstructor: false,
+                        hasExtends: false,
+                        codePath,
+                        currentSegments: new Set()
+                    };
+                }
+            },
+
+            /**
+             * Removes the top of stack item.
+             *
+             * And this traverses all segments of this code path then reports every
+             * invalid node.
+             * @param {CodePath} codePath A code path which was ended.
+             * @returns {void}
+             */
+            onCodePathEnd(codePath) {
+                const isDerivedClass = funcInfo.hasExtends;
+
+                funcInfo = funcInfo.upper;
+                if (!isDerivedClass) {
+                    return;
+                }
+
+                codePath.traverseSegments((segment, controller) => {
+                    const info = segInfoMap[segment.id];
+
+                    for (let i = 0; i < info.invalidNodes.length; ++i) {
+                        const invalidNode = info.invalidNodes[i];
+
+                        context.report({
+                            messageId: "noBeforeSuper",
+                            node: invalidNode,
+                            data: {
+                                kind: invalidNode.type === "Super" ? "super" : "this"
+                            }
+                        });
+                    }
+
+                    if (info.superCalled) {
+                        controller.skip();
+                    }
+                });
+            },
+
+            /**
+             * Initialize information of a given code path segment.
+             * @param {CodePathSegment} segment A code path segment to initialize.
+             * @returns {void}
+             */
+            onCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+
+                if (!isInConstructorOfDerivedClass()) {
+                    return;
+                }
+
+                // Initialize info.
+                segInfoMap[segment.id] = {
+                    superCalled: (
+                        segment.prevSegments.length > 0 &&
+                        segment.prevSegments.every(isCalled)
+                    ),
+                    invalidNodes: []
+                };
+            },
+
+            onUnreachableCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+            /**
+             * Update information of the code path segment when a code path was
+             * looped.
+             * @param {CodePathSegment} fromSegment The code path segment of the
+             *      end of a loop.
+             * @param {CodePathSegment} toSegment A code path segment of the head
+             *      of a loop.
+             * @returns {void}
+             */
+            onCodePathSegmentLoop(fromSegment, toSegment) {
+                if (!isInConstructorOfDerivedClass()) {
+                    return;
+                }
+
+                // Update information inside of the loop.
+                funcInfo.codePath.traverseSegments(
+                    { first: toSegment, last: fromSegment },
+                    (segment, controller) => {
+                        const info = segInfoMap[segment.id];
+
+                        if (info.superCalled) {
+                            info.invalidNodes = [];
+                            controller.skip();
+                        } else if (
+                            segment.prevSegments.length > 0 &&
+                            segment.prevSegments.every(isCalled)
+                        ) {
+                            info.superCalled = true;
+                            info.invalidNodes = [];
+                        }
+                    }
+                );
+            },
+
+            /**
+             * Reports if this is before `super()`.
+             * @param {ASTNode} node A target node.
+             * @returns {void}
+             */
+            ThisExpression(node) {
+                if (isBeforeCallOfSuper()) {
+                    setInvalid(node);
+                }
+            },
+
+            /**
+             * Reports if this is before `super()`.
+             * @param {ASTNode} node A target node.
+             * @returns {void}
+             */
+            Super(node) {
+                if (!astUtils.isCallee(node) && isBeforeCallOfSuper()) {
+                    setInvalid(node);
+                }
+            },
+
+            /**
+             * Marks `super()` called.
+             * @param {ASTNode} node A target node.
+             * @returns {void}
+             */
+            "CallExpression:exit"(node) {
+                if (node.callee.type === "Super" && isBeforeCallOfSuper()) {
+                    setSuperCalled();
+                }
+            },
+
+            /**
+             * Resets state.
+             * @returns {void}
+             */
+            "Program:exit"() {
+                segInfoMap = Object.create(null);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-throw-literal.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-throw-literal.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-throw-literal.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,51 @@
+/**
+ * @fileoverview Rule to restrict what can be thrown as an exception.
+ * @author Dieter Oberkofler
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow throwing literals as exceptions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-throw-literal"
+        },
+
+        schema: [],
+
+        messages: {
+            object: "Expected an error object to be thrown.",
+            undef: "Do not throw undefined."
+        }
+    },
+
+    create(context) {
+
+        return {
+
+            ThrowStatement(node) {
+                if (!astUtils.couldBeError(node.argument)) {
+                    context.report({ node, messageId: "object" });
+                } else if (node.argument.type === "Identifier") {
+                    if (node.argument.name === "undefined") {
+                        context.report({ node, messageId: "undef" });
+                    }
+                }
+
+            }
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-trailing-spaces.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-trailing-spaces.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-trailing-spaces.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,193 @@
+/**
+ * @fileoverview Disallow trailing spaces at the end of lines.
+ * @author Nodeca Team <https://github.com/nodeca>
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Disallow trailing whitespace at the end of lines",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-trailing-spaces"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    skipBlankLines: {
+                        type: "boolean",
+                        default: false
+                    },
+                    ignoreComments: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            trailingSpace: "Trailing spaces not allowed."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        const BLANK_CLASS = "[ \t\u00a0\u2000-\u200b\u3000]",
+            SKIP_BLANK = `^${BLANK_CLASS}*$`,
+            NONBLANK = `${BLANK_CLASS}+$`;
+
+        const options = context.options[0] || {},
+            skipBlankLines = options.skipBlankLines || false,
+            ignoreComments = options.ignoreComments || false;
+
+        /**
+         * Report the error message
+         * @param {ASTNode} node node to report
+         * @param {int[]} location range information
+         * @param {int[]} fixRange Range based on the whole program
+         * @returns {void}
+         */
+        function report(node, location, fixRange) {
+
+            /*
+             * Passing node is a bit dirty, because message data will contain big
+             * text in `source`. But... who cares :) ?
+             * One more kludge will not make worse the bloody wizardry of this
+             * plugin.
+             */
+            context.report({
+                node,
+                loc: location,
+                messageId: "trailingSpace",
+                fix(fixer) {
+                    return fixer.removeRange(fixRange);
+                }
+            });
+        }
+
+        /**
+         * Given a list of comment nodes, return the line numbers for those comments.
+         * @param {Array} comments An array of comment nodes.
+         * @returns {number[]} An array of line numbers containing comments.
+         */
+        function getCommentLineNumbers(comments) {
+            const lines = new Set();
+
+            comments.forEach(comment => {
+                const endLine = comment.type === "Block"
+                    ? comment.loc.end.line - 1
+                    : comment.loc.end.line;
+
+                for (let i = comment.loc.start.line; i <= endLine; i++) {
+                    lines.add(i);
+                }
+            });
+
+            return lines;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+
+            Program: function checkTrailingSpaces(node) {
+
+                /*
+                 * Let's hack. Since Espree does not return whitespace nodes,
+                 * fetch the source code and do matching via regexps.
+                 */
+
+                const re = new RegExp(NONBLANK, "u"),
+                    skipMatch = new RegExp(SKIP_BLANK, "u"),
+                    lines = sourceCode.lines,
+                    linebreaks = sourceCode.getText().match(astUtils.createGlobalLinebreakMatcher()),
+                    comments = sourceCode.getAllComments(),
+                    commentLineNumbers = getCommentLineNumbers(comments);
+
+                let totalLength = 0,
+                    fixRange = [];
+
+                for (let i = 0, ii = lines.length; i < ii; i++) {
+                    const lineNumber = i + 1;
+
+                    /*
+                     * Always add linebreak length to line length to accommodate for line break (\n or \r\n)
+                     * Because during the fix time they also reserve one spot in the array.
+                     * Usually linebreak length is 2 for \r\n (CRLF) and 1 for \n (LF)
+                     */
+                    const linebreakLength = linebreaks && linebreaks[i] ? linebreaks[i].length : 1;
+                    const lineLength = lines[i].length + linebreakLength;
+
+                    const matches = re.exec(lines[i]);
+
+                    if (matches) {
+                        const location = {
+                            start: {
+                                line: lineNumber,
+                                column: matches.index
+                            },
+                            end: {
+                                line: lineNumber,
+                                column: lineLength - linebreakLength
+                            }
+                        };
+
+                        const rangeStart = totalLength + location.start.column;
+                        const rangeEnd = totalLength + location.end.column;
+                        const containingNode = sourceCode.getNodeByRangeIndex(rangeStart);
+
+                        if (containingNode && containingNode.type === "TemplateElement" &&
+                          rangeStart > containingNode.parent.range[0] &&
+                          rangeEnd < containingNode.parent.range[1]) {
+                            totalLength += lineLength;
+                            continue;
+                        }
+
+                        /*
+                         * If the line has only whitespace, and skipBlankLines
+                         * is true, don't report it
+                         */
+                        if (skipBlankLines && skipMatch.test(lines[i])) {
+                            totalLength += lineLength;
+                            continue;
+                        }
+
+                        fixRange = [rangeStart, rangeEnd];
+
+                        if (!ignoreComments || !commentLineNumbers.has(lineNumber)) {
+                            report(node, location, fixRange);
+                        }
+                    }
+
+                    totalLength += lineLength;
+                }
+            }
+
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-undef-init.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-undef-init.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-undef-init.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,75 @@
+/**
+ * @fileoverview Rule to flag when initializing to undefined
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow initializing variables to `undefined`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-undef-init"
+        },
+
+        schema: [],
+        fixable: "code",
+
+        messages: {
+            unnecessaryUndefinedInit: "It's not necessary to initialize '{{name}}' to undefined."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        return {
+
+            VariableDeclarator(node) {
+                const name = sourceCode.getText(node.id),
+                    init = node.init && node.init.name,
+                    scope = sourceCode.getScope(node),
+                    undefinedVar = astUtils.getVariableByName(scope, "undefined"),
+                    shadowed = undefinedVar && undefinedVar.defs.length > 0,
+                    lastToken = sourceCode.getLastToken(node);
+
+                if (init === "undefined" && node.parent.kind !== "const" && !shadowed) {
+                    context.report({
+                        node,
+                        messageId: "unnecessaryUndefinedInit",
+                        data: { name },
+                        fix(fixer) {
+                            if (node.parent.kind === "var") {
+                                return null;
+                            }
+
+                            if (node.id.type === "ArrayPattern" || node.id.type === "ObjectPattern") {
+
+                                // Don't fix destructuring assignment to `undefined`.
+                                return null;
+                            }
+
+                            if (sourceCode.commentsExistBetween(node.id, lastToken)) {
+                                return null;
+                            }
+
+                            return fixer.removeRange([node.id.range[1], node.range[1]]);
+                        }
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-undef.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-undef.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-undef.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,79 @@
+/**
+ * @fileoverview Rule to flag references to undeclared variables.
+ * @author Mark Macdonald
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks if the given node is the argument of a typeof operator.
+ * @param {ASTNode} node The AST node being checked.
+ * @returns {boolean} Whether or not the node is the argument of a typeof operator.
+ */
+function hasTypeOfOperator(node) {
+    const parent = node.parent;
+
+    return parent.type === "UnaryExpression" && parent.operator === "typeof";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow the use of undeclared variables unless mentioned in `/*global */` comments",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-undef"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    typeof: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            undef: "'{{name}}' is not defined."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0];
+        const considerTypeOf = options && options.typeof === true || false;
+        const sourceCode = context.sourceCode;
+
+        return {
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
+
+                globalScope.through.forEach(ref => {
+                    const identifier = ref.identifier;
+
+                    if (!considerTypeOf && hasTypeOfOperator(identifier)) {
+                        return;
+                    }
+
+                    context.report({
+                        node: identifier,
+                        messageId: "undef",
+                        data: identifier
+                    });
+                });
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-undefined.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-undefined.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-undefined.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,86 @@
+/**
+ * @fileoverview Rule to flag references to the undefined variable.
+ * @author Michael Ficarra
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow the use of `undefined` as an identifier",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-undefined"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpectedUndefined: "Unexpected use of undefined."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Report an invalid "undefined" identifier node.
+         * @param {ASTNode} node The node to report.
+         * @returns {void}
+         */
+        function report(node) {
+            context.report({
+                node,
+                messageId: "unexpectedUndefined"
+            });
+        }
+
+        /**
+         * Checks the given scope for references to `undefined` and reports
+         * all references found.
+         * @param {eslint-scope.Scope} scope The scope to check.
+         * @returns {void}
+         */
+        function checkScope(scope) {
+            const undefinedVar = scope.set.get("undefined");
+
+            if (!undefinedVar) {
+                return;
+            }
+
+            const references = undefinedVar.references;
+
+            const defs = undefinedVar.defs;
+
+            // Report non-initializing references (those are covered in defs below)
+            references
+                .filter(ref => !ref.init)
+                .forEach(ref => report(ref.identifier));
+
+            defs.forEach(def => report(def.name));
+        }
+
+        return {
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
+
+                const stack = [globalScope];
+
+                while (stack.length) {
+                    const scope = stack.pop();
+
+                    stack.push(...scope.childScopes);
+                    checkScope(scope);
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-underscore-dangle.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-underscore-dangle.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-underscore-dangle.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,335 @@
+/**
+ * @fileoverview Rule to flag dangling underscores in variable declarations.
+ * @author Matt DuVall <http://www.mattduvall.com>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow dangling underscores in identifiers",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-underscore-dangle"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allow: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        }
+                    },
+                    allowAfterThis: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowAfterSuper: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowAfterThisConstructor: {
+                        type: "boolean",
+                        default: false
+                    },
+                    enforceInMethodNames: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowFunctionParams: {
+                        type: "boolean",
+                        default: true
+                    },
+                    enforceInClassFields: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowInArrayDestructuring: {
+                        type: "boolean",
+                        default: true
+                    },
+                    allowInObjectDestructuring: {
+                        type: "boolean",
+                        default: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedUnderscore: "Unexpected dangling '_' in '{{identifier}}'."
+        }
+    },
+
+    create(context) {
+
+        const options = context.options[0] || {};
+        const ALLOWED_VARIABLES = options.allow ? options.allow : [];
+        const allowAfterThis = typeof options.allowAfterThis !== "undefined" ? options.allowAfterThis : false;
+        const allowAfterSuper = typeof options.allowAfterSuper !== "undefined" ? options.allowAfterSuper : false;
+        const allowAfterThisConstructor = typeof options.allowAfterThisConstructor !== "undefined" ? options.allowAfterThisConstructor : false;
+        const enforceInMethodNames = typeof options.enforceInMethodNames !== "undefined" ? options.enforceInMethodNames : false;
+        const enforceInClassFields = typeof options.enforceInClassFields !== "undefined" ? options.enforceInClassFields : false;
+        const allowFunctionParams = typeof options.allowFunctionParams !== "undefined" ? options.allowFunctionParams : true;
+        const allowInArrayDestructuring = typeof options.allowInArrayDestructuring !== "undefined" ? options.allowInArrayDestructuring : true;
+        const allowInObjectDestructuring = typeof options.allowInObjectDestructuring !== "undefined" ? options.allowInObjectDestructuring : true;
+        const sourceCode = context.sourceCode;
+
+        //-------------------------------------------------------------------------
+        // Helpers
+        //-------------------------------------------------------------------------
+
+        /**
+         * Check if identifier is present inside the allowed option
+         * @param {string} identifier name of the node
+         * @returns {boolean} true if its is present
+         * @private
+         */
+        function isAllowed(identifier) {
+            return ALLOWED_VARIABLES.includes(identifier);
+        }
+
+        /**
+         * Check if identifier has a dangling underscore
+         * @param {string} identifier name of the node
+         * @returns {boolean} true if its is present
+         * @private
+         */
+        function hasDanglingUnderscore(identifier) {
+            const len = identifier.length;
+
+            return identifier !== "_" && (identifier[0] === "_" || identifier[len - 1] === "_");
+        }
+
+        /**
+         * Check if identifier is a special case member expression
+         * @param {string} identifier name of the node
+         * @returns {boolean} true if its is a special case
+         * @private
+         */
+        function isSpecialCaseIdentifierForMemberExpression(identifier) {
+            return identifier === "__proto__";
+        }
+
+        /**
+         * Check if identifier is a special case variable expression
+         * @param {string} identifier name of the node
+         * @returns {boolean} true if its is a special case
+         * @private
+         */
+        function isSpecialCaseIdentifierInVariableExpression(identifier) {
+
+            // Checks for the underscore library usage here
+            return identifier === "_";
+        }
+
+        /**
+         * Check if a node is a member reference of this.constructor
+         * @param {ASTNode} node node to evaluate
+         * @returns {boolean} true if it is a reference on this.constructor
+         * @private
+         */
+        function isThisConstructorReference(node) {
+            return node.object.type === "MemberExpression" &&
+                node.object.property.name === "constructor" &&
+                node.object.object.type === "ThisExpression";
+        }
+
+        /**
+         * Check if function parameter has a dangling underscore.
+         * @param {ASTNode} node function node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkForDanglingUnderscoreInFunctionParameters(node) {
+            if (!allowFunctionParams) {
+                node.params.forEach(param => {
+                    const { type } = param;
+                    let nodeToCheck;
+
+                    if (type === "RestElement") {
+                        nodeToCheck = param.argument;
+                    } else if (type === "AssignmentPattern") {
+                        nodeToCheck = param.left;
+                    } else {
+                        nodeToCheck = param;
+                    }
+
+                    if (nodeToCheck.type === "Identifier") {
+                        const identifier = nodeToCheck.name;
+
+                        if (hasDanglingUnderscore(identifier) && !isAllowed(identifier)) {
+                            context.report({
+                                node: param,
+                                messageId: "unexpectedUnderscore",
+                                data: {
+                                    identifier
+                                }
+                            });
+                        }
+                    }
+                });
+            }
+        }
+
+        /**
+         * Check if function has a dangling underscore
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkForDanglingUnderscoreInFunction(node) {
+            if (node.type === "FunctionDeclaration" && node.id) {
+                const identifier = node.id.name;
+
+                if (typeof identifier !== "undefined" && hasDanglingUnderscore(identifier) && !isAllowed(identifier)) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedUnderscore",
+                        data: {
+                            identifier
+                        }
+                    });
+                }
+            }
+            checkForDanglingUnderscoreInFunctionParameters(node);
+        }
+
+
+        /**
+         * Check if variable expression has a dangling underscore
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkForDanglingUnderscoreInVariableExpression(node) {
+            sourceCode.getDeclaredVariables(node).forEach(variable => {
+                const definition = variable.defs.find(def => def.node === node);
+                const identifierNode = definition.name;
+                const identifier = identifierNode.name;
+                let parent = identifierNode.parent;
+
+                while (!["VariableDeclarator", "ArrayPattern", "ObjectPattern"].includes(parent.type)) {
+                    parent = parent.parent;
+                }
+
+                if (
+                    hasDanglingUnderscore(identifier) &&
+                    !isSpecialCaseIdentifierInVariableExpression(identifier) &&
+                    !isAllowed(identifier) &&
+                    !(allowInArrayDestructuring && parent.type === "ArrayPattern") &&
+                    !(allowInObjectDestructuring && parent.type === "ObjectPattern")
+                ) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedUnderscore",
+                        data: {
+                            identifier
+                        }
+                    });
+                }
+            });
+        }
+
+        /**
+         * Check if member expression has a dangling underscore
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkForDanglingUnderscoreInMemberExpression(node) {
+            const identifier = node.property.name,
+                isMemberOfThis = node.object.type === "ThisExpression",
+                isMemberOfSuper = node.object.type === "Super",
+                isMemberOfThisConstructor = isThisConstructorReference(node);
+
+            if (typeof identifier !== "undefined" && hasDanglingUnderscore(identifier) &&
+                !(isMemberOfThis && allowAfterThis) &&
+                !(isMemberOfSuper && allowAfterSuper) &&
+                !(isMemberOfThisConstructor && allowAfterThisConstructor) &&
+                !isSpecialCaseIdentifierForMemberExpression(identifier) && !isAllowed(identifier)) {
+                context.report({
+                    node,
+                    messageId: "unexpectedUnderscore",
+                    data: {
+                        identifier
+                    }
+                });
+            }
+        }
+
+        /**
+         * Check if method declaration or method property has a dangling underscore
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkForDanglingUnderscoreInMethod(node) {
+            const identifier = node.key.name;
+            const isMethod = node.type === "MethodDefinition" || node.type === "Property" && node.method;
+
+            if (typeof identifier !== "undefined" && enforceInMethodNames && isMethod && hasDanglingUnderscore(identifier) && !isAllowed(identifier)) {
+                context.report({
+                    node,
+                    messageId: "unexpectedUnderscore",
+                    data: {
+                        identifier: node.key.type === "PrivateIdentifier"
+                            ? `#${identifier}`
+                            : identifier
+                    }
+                });
+            }
+        }
+
+        /**
+         * Check if a class field has a dangling underscore
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkForDanglingUnderscoreInClassField(node) {
+            const identifier = node.key.name;
+
+            if (typeof identifier !== "undefined" && hasDanglingUnderscore(identifier) &&
+                enforceInClassFields &&
+                !isAllowed(identifier)) {
+                context.report({
+                    node,
+                    messageId: "unexpectedUnderscore",
+                    data: {
+                        identifier: node.key.type === "PrivateIdentifier"
+                            ? `#${identifier}`
+                            : identifier
+                    }
+                });
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            FunctionDeclaration: checkForDanglingUnderscoreInFunction,
+            VariableDeclarator: checkForDanglingUnderscoreInVariableExpression,
+            MemberExpression: checkForDanglingUnderscoreInMemberExpression,
+            MethodDefinition: checkForDanglingUnderscoreInMethod,
+            PropertyDefinition: checkForDanglingUnderscoreInClassField,
+            Property: checkForDanglingUnderscoreInMethod,
+            FunctionExpression: checkForDanglingUnderscoreInFunction,
+            ArrowFunctionExpression: checkForDanglingUnderscoreInFunction
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-unexpected-multiline.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-unexpected-multiline.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-unexpected-multiline.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,120 @@
+/**
+ * @fileoverview Rule to spot scenarios where a newline looks like it is ending a statement, but is not.
+ * @author Glen Mailer
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow confusing multiline expressions",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-unexpected-multiline"
+        },
+
+        schema: [],
+        messages: {
+            function: "Unexpected newline between function and ( of function call.",
+            property: "Unexpected newline between object and [ of property access.",
+            taggedTemplate: "Unexpected newline between template tag and template literal.",
+            division: "Unexpected newline between numerator and division operator."
+        }
+    },
+
+    create(context) {
+
+        const REGEX_FLAG_MATCHER = /^[gimsuy]+$/u;
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Check to see if there is a newline between the node and the following open bracket
+         * line's expression
+         * @param {ASTNode} node The node to check.
+         * @param {string} messageId The error messageId to use.
+         * @returns {void}
+         * @private
+         */
+        function checkForBreakAfter(node, messageId) {
+            const openParen = sourceCode.getTokenAfter(node, astUtils.isNotClosingParenToken);
+            const nodeExpressionEnd = sourceCode.getTokenBefore(openParen);
+
+            if (openParen.loc.start.line !== nodeExpressionEnd.loc.end.line) {
+                context.report({
+                    node,
+                    loc: openParen.loc,
+                    messageId
+                });
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+
+            MemberExpression(node) {
+                if (!node.computed || node.optional) {
+                    return;
+                }
+                checkForBreakAfter(node.object, "property");
+            },
+
+            TaggedTemplateExpression(node) {
+                const { quasi } = node;
+
+                // handles common tags, parenthesized tags, and typescript's generic type arguments
+                const tokenBefore = sourceCode.getTokenBefore(quasi);
+
+                if (tokenBefore.loc.end.line !== quasi.loc.start.line) {
+                    context.report({
+                        node,
+                        loc: {
+                            start: quasi.loc.start,
+                            end: {
+                                line: quasi.loc.start.line,
+                                column: quasi.loc.start.column + 1
+                            }
+                        },
+                        messageId: "taggedTemplate"
+                    });
+                }
+            },
+
+            CallExpression(node) {
+                if (node.arguments.length === 0 || node.optional) {
+                    return;
+                }
+                checkForBreakAfter(node.callee, "function");
+            },
+
+            "BinaryExpression[operator='/'] > BinaryExpression[operator='/'].left"(node) {
+                const secondSlash = sourceCode.getTokenAfter(node, token => token.value === "/");
+                const tokenAfterOperator = sourceCode.getTokenAfter(secondSlash);
+
+                if (
+                    tokenAfterOperator.type === "Identifier" &&
+                    REGEX_FLAG_MATCHER.test(tokenAfterOperator.value) &&
+                    secondSlash.range[1] === tokenAfterOperator.range[0]
+                ) {
+                    checkForBreakAfter(node.left, "division");
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-unmodified-loop-condition.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-unmodified-loop-condition.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-unmodified-loop-condition.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,360 @@
+/**
+ * @fileoverview Rule to disallow use of unmodified expressions in loop conditions
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const Traverser = require("../shared/traverser"),
+    astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const SENTINEL_PATTERN = /(?:(?:Call|Class|Function|Member|New|Yield)Expression|Statement|Declaration)$/u;
+const LOOP_PATTERN = /^(?:DoWhile|For|While)Statement$/u; // for-in/of statements don't have `test` property.
+const GROUP_PATTERN = /^(?:BinaryExpression|ConditionalExpression)$/u;
+const SKIP_PATTERN = /^(?:ArrowFunction|Class|Function)Expression$/u;
+const DYNAMIC_PATTERN = /^(?:Call|Member|New|TaggedTemplate|Yield)Expression$/u;
+
+/**
+ * @typedef {Object} LoopConditionInfo
+ * @property {eslint-scope.Reference} reference - The reference.
+ * @property {ASTNode} group - BinaryExpression or ConditionalExpression nodes
+ *      that the reference is belonging to.
+ * @property {Function} isInLoop - The predicate which checks a given reference
+ *      is in this loop.
+ * @property {boolean} modified - The flag that the reference is modified in
+ *      this loop.
+ */
+
+/**
+ * Checks whether or not a given reference is a write reference.
+ * @param {eslint-scope.Reference} reference A reference to check.
+ * @returns {boolean} `true` if the reference is a write reference.
+ */
+function isWriteReference(reference) {
+    if (reference.init) {
+        const def = reference.resolved && reference.resolved.defs[0];
+
+        if (!def || def.type !== "Variable" || def.parent.kind !== "var") {
+            return false;
+        }
+    }
+    return reference.isWrite();
+}
+
+/**
+ * Checks whether or not a given loop condition info does not have the modified
+ * flag.
+ * @param {LoopConditionInfo} condition A loop condition info to check.
+ * @returns {boolean} `true` if the loop condition info is "unmodified".
+ */
+function isUnmodified(condition) {
+    return !condition.modified;
+}
+
+/**
+ * Checks whether or not a given loop condition info does not have the modified
+ * flag and does not have the group this condition belongs to.
+ * @param {LoopConditionInfo} condition A loop condition info to check.
+ * @returns {boolean} `true` if the loop condition info is "unmodified".
+ */
+function isUnmodifiedAndNotBelongToGroup(condition) {
+    return !(condition.modified || condition.group);
+}
+
+/**
+ * Checks whether or not a given reference is inside of a given node.
+ * @param {ASTNode} node A node to check.
+ * @param {eslint-scope.Reference} reference A reference to check.
+ * @returns {boolean} `true` if the reference is inside of the node.
+ */
+function isInRange(node, reference) {
+    const or = node.range;
+    const ir = reference.identifier.range;
+
+    return or[0] <= ir[0] && ir[1] <= or[1];
+}
+
+/**
+ * Checks whether or not a given reference is inside of a loop node's condition.
+ * @param {ASTNode} node A node to check.
+ * @param {eslint-scope.Reference} reference A reference to check.
+ * @returns {boolean} `true` if the reference is inside of the loop node's
+ *      condition.
+ */
+const isInLoop = {
+    WhileStatement: isInRange,
+    DoWhileStatement: isInRange,
+    ForStatement(node, reference) {
+        return (
+            isInRange(node, reference) &&
+            !(node.init && isInRange(node.init, reference))
+        );
+    }
+};
+
+/**
+ * Gets the function which encloses a given reference.
+ * This supports only FunctionDeclaration.
+ * @param {eslint-scope.Reference} reference A reference to get.
+ * @returns {ASTNode|null} The function node or null.
+ */
+function getEncloseFunctionDeclaration(reference) {
+    let node = reference.identifier;
+
+    while (node) {
+        if (node.type === "FunctionDeclaration") {
+            return node.id ? node : null;
+        }
+
+        node = node.parent;
+    }
+
+    return null;
+}
+
+/**
+ * Updates the "modified" flags of given loop conditions with given modifiers.
+ * @param {LoopConditionInfo[]} conditions The loop conditions to be updated.
+ * @param {eslint-scope.Reference[]} modifiers The references to update.
+ * @returns {void}
+ */
+function updateModifiedFlag(conditions, modifiers) {
+
+    for (let i = 0; i < conditions.length; ++i) {
+        const condition = conditions[i];
+
+        for (let j = 0; !condition.modified && j < modifiers.length; ++j) {
+            const modifier = modifiers[j];
+            let funcNode, funcVar;
+
+            /*
+             * Besides checking for the condition being in the loop, we want to
+             * check the function that this modifier is belonging to is called
+             * in the loop.
+             * FIXME: This should probably be extracted to a function.
+             */
+            const inLoop = condition.isInLoop(modifier) || Boolean(
+                (funcNode = getEncloseFunctionDeclaration(modifier)) &&
+                (funcVar = astUtils.getVariableByName(modifier.from.upper, funcNode.id.name)) &&
+                funcVar.references.some(condition.isInLoop)
+            );
+
+            condition.modified = inLoop;
+        }
+    }
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow unmodified loop conditions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-unmodified-loop-condition"
+        },
+
+        schema: [],
+
+        messages: {
+            loopConditionNotModified: "'{{name}}' is not modified in this loop."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        let groupMap = null;
+
+        /**
+         * Reports a given condition info.
+         * @param {LoopConditionInfo} condition A loop condition info to report.
+         * @returns {void}
+         */
+        function report(condition) {
+            const node = condition.reference.identifier;
+
+            context.report({
+                node,
+                messageId: "loopConditionNotModified",
+                data: node
+            });
+        }
+
+        /**
+         * Registers given conditions to the group the condition belongs to.
+         * @param {LoopConditionInfo[]} conditions A loop condition info to
+         *      register.
+         * @returns {void}
+         */
+        function registerConditionsToGroup(conditions) {
+            for (let i = 0; i < conditions.length; ++i) {
+                const condition = conditions[i];
+
+                if (condition.group) {
+                    let group = groupMap.get(condition.group);
+
+                    if (!group) {
+                        group = [];
+                        groupMap.set(condition.group, group);
+                    }
+                    group.push(condition);
+                }
+            }
+        }
+
+        /**
+         * Reports references which are inside of unmodified groups.
+         * @param {LoopConditionInfo[]} conditions A loop condition info to report.
+         * @returns {void}
+         */
+        function checkConditionsInGroup(conditions) {
+            if (conditions.every(isUnmodified)) {
+                conditions.forEach(report);
+            }
+        }
+
+        /**
+         * Checks whether or not a given group node has any dynamic elements.
+         * @param {ASTNode} root A node to check.
+         *      This node is one of BinaryExpression or ConditionalExpression.
+         * @returns {boolean} `true` if the node is dynamic.
+         */
+        function hasDynamicExpressions(root) {
+            let retv = false;
+
+            Traverser.traverse(root, {
+                visitorKeys: sourceCode.visitorKeys,
+                enter(node) {
+                    if (DYNAMIC_PATTERN.test(node.type)) {
+                        retv = true;
+                        this.break();
+                    } else if (SKIP_PATTERN.test(node.type)) {
+                        this.skip();
+                    }
+                }
+            });
+
+            return retv;
+        }
+
+        /**
+         * Creates the loop condition information from a given reference.
+         * @param {eslint-scope.Reference} reference A reference to create.
+         * @returns {LoopConditionInfo|null} Created loop condition info, or null.
+         */
+        function toLoopCondition(reference) {
+            if (reference.init) {
+                return null;
+            }
+
+            let group = null;
+            let child = reference.identifier;
+            let node = child.parent;
+
+            while (node) {
+                if (SENTINEL_PATTERN.test(node.type)) {
+                    if (LOOP_PATTERN.test(node.type) && node.test === child) {
+
+                        // This reference is inside of a loop condition.
+                        return {
+                            reference,
+                            group,
+                            isInLoop: isInLoop[node.type].bind(null, node),
+                            modified: false
+                        };
+                    }
+
+                    // This reference is outside of a loop condition.
+                    break;
+                }
+
+                /*
+                 * If it's inside of a group, OK if either operand is modified.
+                 * So stores the group this reference belongs to.
+                 */
+                if (GROUP_PATTERN.test(node.type)) {
+
+                    // If this expression is dynamic, no need to check.
+                    if (hasDynamicExpressions(node)) {
+                        break;
+                    } else {
+                        group = node;
+                    }
+                }
+
+                child = node;
+                node = node.parent;
+            }
+
+            return null;
+        }
+
+        /**
+         * Finds unmodified references which are inside of a loop condition.
+         * Then reports the references which are outside of groups.
+         * @param {eslint-scope.Variable} variable A variable to report.
+         * @returns {void}
+         */
+        function checkReferences(variable) {
+
+            // Gets references that exist in loop conditions.
+            const conditions = variable
+                .references
+                .map(toLoopCondition)
+                .filter(Boolean);
+
+            if (conditions.length === 0) {
+                return;
+            }
+
+            // Registers the conditions to belonging groups.
+            registerConditionsToGroup(conditions);
+
+            // Check the conditions are modified.
+            const modifiers = variable.references.filter(isWriteReference);
+
+            if (modifiers.length > 0) {
+                updateModifiedFlag(conditions, modifiers);
+            }
+
+            /*
+             * Reports the conditions which are not belonging to groups.
+             * Others will be reported after all variables are done.
+             */
+            conditions
+                .filter(isUnmodifiedAndNotBelongToGroup)
+                .forEach(report);
+        }
+
+        return {
+            "Program:exit"(node) {
+                const queue = [sourceCode.getScope(node)];
+
+                groupMap = new Map();
+
+                let scope;
+
+                while ((scope = queue.pop())) {
+                    queue.push(...scope.childScopes);
+                    scope.variables.forEach(checkReferences);
+                }
+
+                groupMap.forEach(checkConditionsInGroup);
+                groupMap = null;
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-unneeded-ternary.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-unneeded-ternary.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-unneeded-ternary.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,166 @@
+/**
+ * @fileoverview Rule to flag no-unneeded-ternary
+ * @author Gyandeep Singh
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+// Operators that always result in a boolean value
+const BOOLEAN_OPERATORS = new Set(["==", "===", "!=", "!==", ">", ">=", "<", "<=", "in", "instanceof"]);
+const OPERATOR_INVERSES = {
+    "==": "!=",
+    "!=": "==",
+    "===": "!==",
+    "!==": "==="
+
+    // Operators like < and >= are not true inverses, since both will return false with NaN.
+};
+const OR_PRECEDENCE = astUtils.getPrecedence({ type: "LogicalExpression", operator: "||" });
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow ternary operators when simpler alternatives exist",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-unneeded-ternary"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    defaultAssignment: {
+                        type: "boolean",
+                        default: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "code",
+
+        messages: {
+            unnecessaryConditionalExpression: "Unnecessary use of boolean literals in conditional expression.",
+            unnecessaryConditionalAssignment: "Unnecessary use of conditional expression for default assignment."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const defaultAssignment = options.defaultAssignment !== false;
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Test if the node is a boolean literal
+         * @param {ASTNode} node The node to report.
+         * @returns {boolean} True if the its a boolean literal
+         * @private
+         */
+        function isBooleanLiteral(node) {
+            return node.type === "Literal" && typeof node.value === "boolean";
+        }
+
+        /**
+         * Creates an expression that represents the boolean inverse of the expression represented by the original node
+         * @param {ASTNode} node A node representing an expression
+         * @returns {string} A string representing an inverted expression
+         */
+        function invertExpression(node) {
+            if (node.type === "BinaryExpression" && Object.prototype.hasOwnProperty.call(OPERATOR_INVERSES, node.operator)) {
+                const operatorToken = sourceCode.getFirstTokenBetween(
+                    node.left,
+                    node.right,
+                    token => token.value === node.operator
+                );
+                const text = sourceCode.getText();
+
+                return text.slice(node.range[0],
+                    operatorToken.range[0]) + OPERATOR_INVERSES[node.operator] + text.slice(operatorToken.range[1], node.range[1]);
+            }
+
+            if (astUtils.getPrecedence(node) < astUtils.getPrecedence({ type: "UnaryExpression" })) {
+                return `!(${astUtils.getParenthesisedText(sourceCode, node)})`;
+            }
+            return `!${astUtils.getParenthesisedText(sourceCode, node)}`;
+        }
+
+        /**
+         * Tests if a given node always evaluates to a boolean value
+         * @param {ASTNode} node An expression node
+         * @returns {boolean} True if it is determined that the node will always evaluate to a boolean value
+         */
+        function isBooleanExpression(node) {
+            return node.type === "BinaryExpression" && BOOLEAN_OPERATORS.has(node.operator) ||
+                node.type === "UnaryExpression" && node.operator === "!";
+        }
+
+        /**
+         * Test if the node matches the pattern id ? id : expression
+         * @param {ASTNode} node The ConditionalExpression to check.
+         * @returns {boolean} True if the pattern is matched, and false otherwise
+         * @private
+         */
+        function matchesDefaultAssignment(node) {
+            return node.test.type === "Identifier" &&
+                   node.consequent.type === "Identifier" &&
+                   node.test.name === node.consequent.name;
+        }
+
+        return {
+
+            ConditionalExpression(node) {
+                if (isBooleanLiteral(node.alternate) && isBooleanLiteral(node.consequent)) {
+                    context.report({
+                        node,
+                        messageId: "unnecessaryConditionalExpression",
+                        fix(fixer) {
+                            if (node.consequent.value === node.alternate.value) {
+
+                                // Replace `foo ? true : true` with just `true`, but don't replace `foo() ? true : true`
+                                return node.test.type === "Identifier" ? fixer.replaceText(node, node.consequent.value.toString()) : null;
+                            }
+                            if (node.alternate.value) {
+
+                                // Replace `foo() ? false : true` with `!(foo())`
+                                return fixer.replaceText(node, invertExpression(node.test));
+                            }
+
+                            // Replace `foo ? true : false` with `foo` if `foo` is guaranteed to be a boolean, or `!!foo` otherwise.
+
+                            return fixer.replaceText(node, isBooleanExpression(node.test) ? astUtils.getParenthesisedText(sourceCode, node.test) : `!${invertExpression(node.test)}`);
+                        }
+                    });
+                } else if (!defaultAssignment && matchesDefaultAssignment(node)) {
+                    context.report({
+                        node,
+                        messageId: "unnecessaryConditionalAssignment",
+                        fix(fixer) {
+                            const shouldParenthesizeAlternate =
+                                (
+                                    astUtils.getPrecedence(node.alternate) < OR_PRECEDENCE ||
+                                    astUtils.isCoalesceExpression(node.alternate)
+                                ) &&
+                                !astUtils.isParenthesised(sourceCode, node.alternate);
+                            const alternateText = shouldParenthesizeAlternate
+                                ? `(${sourceCode.getText(node.alternate)})`
+                                : astUtils.getParenthesisedText(sourceCode, node.alternate);
+                            const testText = astUtils.getParenthesisedText(sourceCode, node.test);
+
+                            return fixer.replaceText(node, `${testText} || ${alternateText}`);
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-unreachable-loop.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-unreachable-loop.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-unreachable-loop.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,185 @@
+/**
+ * @fileoverview Rule to disallow loops with a body that allows only one iteration
+ * @author Milos Djermanovic
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const allLoopTypes = ["WhileStatement", "DoWhileStatement", "ForStatement", "ForInStatement", "ForOfStatement"];
+
+/**
+ * Checks all segments in a set and returns true if any are reachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if any segment is reachable; false otherwise.
+ */
+function isAnySegmentReachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+/**
+ * Determines whether the given node is the first node in the code path to which a loop statement
+ * 'loops' for the next iteration.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is a looping target.
+ */
+function isLoopingTarget(node) {
+    const parent = node.parent;
+
+    if (parent) {
+        switch (parent.type) {
+            case "WhileStatement":
+                return node === parent.test;
+            case "DoWhileStatement":
+                return node === parent.body;
+            case "ForStatement":
+                return node === (parent.update || parent.test || parent.body);
+            case "ForInStatement":
+            case "ForOfStatement":
+                return node === parent.left;
+
+            // no default
+        }
+    }
+
+    return false;
+}
+
+/**
+ * Creates an array with elements from the first given array that are not included in the second given array.
+ * @param {Array} arrA The array to compare from.
+ * @param {Array} arrB The array to compare against.
+ * @returns {Array} a new array that represents `arrA \ arrB`.
+ */
+function getDifference(arrA, arrB) {
+    return arrA.filter(a => !arrB.includes(a));
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow loops with a body that allows only one iteration",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-unreachable-loop"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                ignore: {
+                    type: "array",
+                    items: {
+                        enum: allLoopTypes
+                    },
+                    uniqueItems: true
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            invalid: "Invalid loop. Its body allows only one iteration."
+        }
+    },
+
+    create(context) {
+        const ignoredLoopTypes = context.options[0] && context.options[0].ignore || [],
+            loopTypesToCheck = getDifference(allLoopTypes, ignoredLoopTypes),
+            loopSelector = loopTypesToCheck.join(","),
+            loopsByTargetSegments = new Map(),
+            loopsToReport = new Set();
+
+        const codePathSegments = [];
+        let currentCodePathSegments = new Set();
+
+        return {
+
+            onCodePathStart() {
+                codePathSegments.push(currentCodePathSegments);
+                currentCodePathSegments = new Set();
+            },
+
+            onCodePathEnd() {
+                currentCodePathSegments = codePathSegments.pop();
+            },
+
+            onUnreachableCodePathSegmentStart(segment) {
+                currentCodePathSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                currentCodePathSegments.delete(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                currentCodePathSegments.delete(segment);
+            },
+
+            onCodePathSegmentStart(segment, node) {
+
+                currentCodePathSegments.add(segment);
+
+                if (isLoopingTarget(node)) {
+                    const loop = node.parent;
+
+                    loopsByTargetSegments.set(segment, loop);
+                }
+            },
+
+            onCodePathSegmentLoop(_, toSegment, node) {
+                const loop = loopsByTargetSegments.get(toSegment);
+
+                /**
+                 * The second iteration is reachable, meaning that the loop is valid by the logic of this rule,
+                 * only if there is at least one loop event with the appropriate target (which has been already
+                 * determined in the `loopsByTargetSegments` map), raised from either:
+                 *
+                 * - the end of the loop's body (in which case `node === loop`)
+                 * - a `continue` statement
+                 *
+                 * This condition skips loop events raised from `ForInStatement > .right` and `ForOfStatement > .right` nodes.
+                 */
+                if (node === loop || node.type === "ContinueStatement") {
+
+                    // Removes loop if it exists in the set. Otherwise, `Set#delete` has no effect and doesn't throw.
+                    loopsToReport.delete(loop);
+                }
+            },
+
+            [loopSelector](node) {
+
+                /**
+                 * Ignore unreachable loop statements to avoid unnecessary complexity in the implementation, or false positives otherwise.
+                 * For unreachable segments, the code path analysis does not raise events required for this implementation.
+                 */
+                if (isAnySegmentReachable(currentCodePathSegments)) {
+                    loopsToReport.add(node);
+                }
+            },
+
+
+            "Program:exit"() {
+                loopsToReport.forEach(
+                    node => context.report({ node, messageId: "invalid" })
+                );
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-unreachable.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-unreachable.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-unreachable.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,293 @@
+/**
+ * @fileoverview Checks for unreachable code due to return, throws, break, and continue.
+ * @author Joel Feenstra
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * @typedef {Object} ConstructorInfo
+ * @property {ConstructorInfo | null} upper Info about the constructor that encloses this constructor.
+ * @property {boolean} hasSuperCall The flag about having `super()` expressions.
+ */
+
+/**
+ * Checks whether or not a given variable declarator has the initializer.
+ * @param {ASTNode} node A VariableDeclarator node to check.
+ * @returns {boolean} `true` if the node has the initializer.
+ */
+function isInitialized(node) {
+    return Boolean(node.init);
+}
+
+/**
+ * Checks all segments in a set and returns true if all are unreachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if all segments are unreachable; false otherwise.
+ */
+function areAllSegmentsUnreachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+/**
+ * The class to distinguish consecutive unreachable statements.
+ */
+class ConsecutiveRange {
+    constructor(sourceCode) {
+        this.sourceCode = sourceCode;
+        this.startNode = null;
+        this.endNode = null;
+    }
+
+    /**
+     * The location object of this range.
+     * @type {Object}
+     */
+    get location() {
+        return {
+            start: this.startNode.loc.start,
+            end: this.endNode.loc.end
+        };
+    }
+
+    /**
+     * `true` if this range is empty.
+     * @type {boolean}
+     */
+    get isEmpty() {
+        return !(this.startNode && this.endNode);
+    }
+
+    /**
+     * Checks whether the given node is inside of this range.
+     * @param {ASTNode|Token} node The node to check.
+     * @returns {boolean} `true` if the node is inside of this range.
+     */
+    contains(node) {
+        return (
+            node.range[0] >= this.startNode.range[0] &&
+            node.range[1] <= this.endNode.range[1]
+        );
+    }
+
+    /**
+     * Checks whether the given node is consecutive to this range.
+     * @param {ASTNode} node The node to check.
+     * @returns {boolean} `true` if the node is consecutive to this range.
+     */
+    isConsecutive(node) {
+        return this.contains(this.sourceCode.getTokenBefore(node));
+    }
+
+    /**
+     * Merges the given node to this range.
+     * @param {ASTNode} node The node to merge.
+     * @returns {void}
+     */
+    merge(node) {
+        this.endNode = node;
+    }
+
+    /**
+     * Resets this range by the given node or null.
+     * @param {ASTNode|null} node The node to reset, or null.
+     * @returns {void}
+     */
+    reset(node) {
+        this.startNode = this.endNode = node;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow unreachable code after `return`, `throw`, `continue`, and `break` statements",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-unreachable"
+        },
+
+        schema: [],
+
+        messages: {
+            unreachableCode: "Unreachable code."
+        }
+    },
+
+    create(context) {
+
+        /** @type {ConstructorInfo | null} */
+        let constructorInfo = null;
+
+        /** @type {ConsecutiveRange} */
+        const range = new ConsecutiveRange(context.sourceCode);
+
+        /** @type {Array<Set<CodePathSegment>>} */
+        const codePathSegments = [];
+
+        /** @type {Set<CodePathSegment>} */
+        let currentCodePathSegments = new Set();
+
+        /**
+         * Reports a given node if it's unreachable.
+         * @param {ASTNode} node A statement node to report.
+         * @returns {void}
+         */
+        function reportIfUnreachable(node) {
+            let nextNode = null;
+
+            if (node && (node.type === "PropertyDefinition" || areAllSegmentsUnreachable(currentCodePathSegments))) {
+
+                // Store this statement to distinguish consecutive statements.
+                if (range.isEmpty) {
+                    range.reset(node);
+                    return;
+                }
+
+                // Skip if this statement is inside of the current range.
+                if (range.contains(node)) {
+                    return;
+                }
+
+                // Merge if this statement is consecutive to the current range.
+                if (range.isConsecutive(node)) {
+                    range.merge(node);
+                    return;
+                }
+
+                nextNode = node;
+            }
+
+            /*
+             * Report the current range since this statement is reachable or is
+             * not consecutive to the current range.
+             */
+            if (!range.isEmpty) {
+                context.report({
+                    messageId: "unreachableCode",
+                    loc: range.location,
+                    node: range.startNode
+                });
+            }
+
+            // Update the current range.
+            range.reset(nextNode);
+        }
+
+        return {
+
+            // Manages the current code path.
+            onCodePathStart() {
+                codePathSegments.push(currentCodePathSegments);
+                currentCodePathSegments = new Set();
+            },
+
+            onCodePathEnd() {
+                currentCodePathSegments = codePathSegments.pop();
+            },
+
+            onUnreachableCodePathSegmentStart(segment) {
+                currentCodePathSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                currentCodePathSegments.delete(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                currentCodePathSegments.delete(segment);
+            },
+
+            onCodePathSegmentStart(segment) {
+                currentCodePathSegments.add(segment);
+            },
+
+            // Registers for all statement nodes (excludes FunctionDeclaration).
+            BlockStatement: reportIfUnreachable,
+            BreakStatement: reportIfUnreachable,
+            ClassDeclaration: reportIfUnreachable,
+            ContinueStatement: reportIfUnreachable,
+            DebuggerStatement: reportIfUnreachable,
+            DoWhileStatement: reportIfUnreachable,
+            ExpressionStatement: reportIfUnreachable,
+            ForInStatement: reportIfUnreachable,
+            ForOfStatement: reportIfUnreachable,
+            ForStatement: reportIfUnreachable,
+            IfStatement: reportIfUnreachable,
+            ImportDeclaration: reportIfUnreachable,
+            LabeledStatement: reportIfUnreachable,
+            ReturnStatement: reportIfUnreachable,
+            SwitchStatement: reportIfUnreachable,
+            ThrowStatement: reportIfUnreachable,
+            TryStatement: reportIfUnreachable,
+
+            VariableDeclaration(node) {
+                if (node.kind !== "var" || node.declarations.some(isInitialized)) {
+                    reportIfUnreachable(node);
+                }
+            },
+
+            WhileStatement: reportIfUnreachable,
+            WithStatement: reportIfUnreachable,
+            ExportNamedDeclaration: reportIfUnreachable,
+            ExportDefaultDeclaration: reportIfUnreachable,
+            ExportAllDeclaration: reportIfUnreachable,
+
+            "Program:exit"() {
+                reportIfUnreachable();
+            },
+
+            /*
+             * Instance fields defined in a subclass are never created if the constructor of the subclass
+             * doesn't call `super()`, so their definitions are unreachable code.
+             */
+            "MethodDefinition[kind='constructor']"() {
+                constructorInfo = {
+                    upper: constructorInfo,
+                    hasSuperCall: false
+                };
+            },
+            "MethodDefinition[kind='constructor']:exit"(node) {
+                const { hasSuperCall } = constructorInfo;
+
+                constructorInfo = constructorInfo.upper;
+
+                // skip typescript constructors without the body
+                if (!node.value.body) {
+                    return;
+                }
+
+                const classDefinition = node.parent.parent;
+
+                if (classDefinition.superClass && !hasSuperCall) {
+                    for (const element of classDefinition.body.body) {
+                        if (element.type === "PropertyDefinition" && !element.static) {
+                            reportIfUnreachable(element);
+                        }
+                    }
+                }
+            },
+            "CallExpression > Super.callee"() {
+                if (constructorInfo) {
+                    constructorInfo.hasSuperCall = true;
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-unsafe-finally.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-unsafe-finally.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-unsafe-finally.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,111 @@
+/**
+ * @fileoverview Rule to flag unsafe statements in finally block
+ * @author Onur Temizkan
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const SENTINEL_NODE_TYPE_RETURN_THROW = /^(?:Program|(?:Function|Class)(?:Declaration|Expression)|ArrowFunctionExpression)$/u;
+const SENTINEL_NODE_TYPE_BREAK = /^(?:Program|(?:Function|Class)(?:Declaration|Expression)|ArrowFunctionExpression|DoWhileStatement|WhileStatement|ForOfStatement|ForInStatement|ForStatement|SwitchStatement)$/u;
+const SENTINEL_NODE_TYPE_CONTINUE = /^(?:Program|(?:Function|Class)(?:Declaration|Expression)|ArrowFunctionExpression|DoWhileStatement|WhileStatement|ForOfStatement|ForInStatement|ForStatement)$/u;
+
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow control flow statements in `finally` blocks",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-unsafe-finally"
+        },
+
+        schema: [],
+
+        messages: {
+            unsafeUsage: "Unsafe usage of {{nodeType}}."
+        }
+    },
+    create(context) {
+
+        /**
+         * Checks if the node is the finalizer of a TryStatement
+         * @param {ASTNode} node node to check.
+         * @returns {boolean} - true if the node is the finalizer of a TryStatement
+         */
+        function isFinallyBlock(node) {
+            return node.parent.type === "TryStatement" && node.parent.finalizer === node;
+        }
+
+        /**
+         * Climbs up the tree if the node is not a sentinel node
+         * @param {ASTNode} node node to check.
+         * @param {string} label label of the break or continue statement
+         * @returns {boolean} - return whether the node is a finally block or a sentinel node
+         */
+        function isInFinallyBlock(node, label) {
+            let labelInside = false;
+            let sentinelNodeType;
+
+            if (node.type === "BreakStatement" && !node.label) {
+                sentinelNodeType = SENTINEL_NODE_TYPE_BREAK;
+            } else if (node.type === "ContinueStatement") {
+                sentinelNodeType = SENTINEL_NODE_TYPE_CONTINUE;
+            } else {
+                sentinelNodeType = SENTINEL_NODE_TYPE_RETURN_THROW;
+            }
+
+            for (
+                let currentNode = node;
+                currentNode && !sentinelNodeType.test(currentNode.type);
+                currentNode = currentNode.parent
+            ) {
+                if (currentNode.parent.label && label && (currentNode.parent.label.name === label.name)) {
+                    labelInside = true;
+                }
+                if (isFinallyBlock(currentNode)) {
+                    if (label && labelInside) {
+                        return false;
+                    }
+                    return true;
+                }
+            }
+            return false;
+        }
+
+        /**
+         * Checks whether the possibly-unsafe statement is inside a finally block.
+         * @param {ASTNode} node node to check.
+         * @returns {void}
+         */
+        function check(node) {
+            if (isInFinallyBlock(node, node.label)) {
+                context.report({
+                    messageId: "unsafeUsage",
+                    data: {
+                        nodeType: node.type
+                    },
+                    node,
+                    line: node.loc.line,
+                    column: node.loc.column
+                });
+            }
+        }
+
+        return {
+            ReturnStatement: check,
+            ThrowStatement: check,
+            BreakStatement: check,
+            ContinueStatement: check
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-unsafe-negation.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-unsafe-negation.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-unsafe-negation.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,128 @@
+/**
+ * @fileoverview Rule to disallow negating the left operand of relational operators
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether the given operator is `in` or `instanceof`
+ * @param {string} op The operator type to check.
+ * @returns {boolean} `true` if the operator is `in` or `instanceof`
+ */
+function isInOrInstanceOfOperator(op) {
+    return op === "in" || op === "instanceof";
+}
+
+/**
+ * Checks whether the given operator is an ordering relational operator or not.
+ * @param {string} op The operator type to check.
+ * @returns {boolean} `true` if the operator is an ordering relational operator.
+ */
+function isOrderingRelationalOperator(op) {
+    return op === "<" || op === ">" || op === ">=" || op === "<=";
+}
+
+/**
+ * Checks whether the given node is a logical negation expression or not.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is a logical negation expression.
+ */
+function isNegation(node) {
+    return node.type === "UnaryExpression" && node.operator === "!";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow negating the left operand of relational operators",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-unsafe-negation"
+        },
+
+        hasSuggestions: true,
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    enforceForOrderingRelations: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: null,
+
+        messages: {
+            unexpected: "Unexpected negating the left operand of '{{operator}}' operator.",
+            suggestNegatedExpression: "Negate '{{operator}}' expression instead of its left operand. This changes the current behavior.",
+            suggestParenthesisedNegation: "Wrap negation in '()' to make the intention explicit. This preserves the current behavior."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const options = context.options[0] || {};
+        const enforceForOrderingRelations = options.enforceForOrderingRelations === true;
+
+        return {
+            BinaryExpression(node) {
+                const operator = node.operator;
+                const orderingRelationRuleApplies = enforceForOrderingRelations && isOrderingRelationalOperator(operator);
+
+                if (
+                    (isInOrInstanceOfOperator(operator) || orderingRelationRuleApplies) &&
+                    isNegation(node.left) &&
+                    !astUtils.isParenthesised(sourceCode, node.left)
+                ) {
+                    context.report({
+                        node,
+                        loc: node.left.loc,
+                        messageId: "unexpected",
+                        data: { operator },
+                        suggest: [
+                            {
+                                messageId: "suggestNegatedExpression",
+                                data: { operator },
+                                fix(fixer) {
+                                    const negationToken = sourceCode.getFirstToken(node.left);
+                                    const fixRange = [negationToken.range[1], node.range[1]];
+                                    const text = sourceCode.text.slice(fixRange[0], fixRange[1]);
+
+                                    return fixer.replaceTextRange(fixRange, `(${text})`);
+                                }
+                            },
+                            {
+                                messageId: "suggestParenthesisedNegation",
+                                fix(fixer) {
+                                    return fixer.replaceText(node.left, `(${sourceCode.getText(node.left)})`);
+                                }
+                            }
+                        ]
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-unsafe-optional-chaining.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-unsafe-optional-chaining.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-unsafe-optional-chaining.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,205 @@
+/**
+ * @fileoverview Rule to disallow unsafe optional chaining
+ * @author Yeon JuAn
+ */
+
+"use strict";
+
+const UNSAFE_ARITHMETIC_OPERATORS = new Set(["+", "-", "/", "*", "%", "**"]);
+const UNSAFE_ASSIGNMENT_OPERATORS = new Set(["+=", "-=", "/=", "*=", "%=", "**="]);
+const UNSAFE_RELATIONAL_OPERATORS = new Set(["in", "instanceof"]);
+
+/**
+ * Checks whether a node is a destructuring pattern or not
+ * @param {ASTNode} node node to check
+ * @returns {boolean} `true` if a node is a destructuring pattern, otherwise `false`
+ */
+function isDestructuringPattern(node) {
+    return node.type === "ObjectPattern" || node.type === "ArrayPattern";
+}
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow use of optional chaining in contexts where the `undefined` value is not allowed",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-unsafe-optional-chaining"
+        },
+        schema: [{
+            type: "object",
+            properties: {
+                disallowArithmeticOperators: {
+                    type: "boolean",
+                    default: false
+                }
+            },
+            additionalProperties: false
+        }],
+        fixable: null,
+        messages: {
+            unsafeOptionalChain: "Unsafe usage of optional chaining. If it short-circuits with 'undefined' the evaluation will throw TypeError.",
+            unsafeArithmetic: "Unsafe arithmetic operation on optional chaining. It can result in NaN."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const disallowArithmeticOperators = (options.disallowArithmeticOperators) || false;
+
+        /**
+         * Reports unsafe usage of optional chaining
+         * @param {ASTNode} node node to report
+         * @returns {void}
+         */
+        function reportUnsafeUsage(node) {
+            context.report({
+                messageId: "unsafeOptionalChain",
+                node
+            });
+        }
+
+        /**
+         * Reports unsafe arithmetic operation on optional chaining
+         * @param {ASTNode} node node to report
+         * @returns {void}
+         */
+        function reportUnsafeArithmetic(node) {
+            context.report({
+                messageId: "unsafeArithmetic",
+                node
+            });
+        }
+
+        /**
+         * Checks and reports if a node can short-circuit with `undefined` by optional chaining.
+         * @param {ASTNode} [node] node to check
+         * @param {Function} reportFunc report function
+         * @returns {void}
+         */
+        function checkUndefinedShortCircuit(node, reportFunc) {
+            if (!node) {
+                return;
+            }
+            switch (node.type) {
+                case "LogicalExpression":
+                    if (node.operator === "||" || node.operator === "??") {
+                        checkUndefinedShortCircuit(node.right, reportFunc);
+                    } else if (node.operator === "&&") {
+                        checkUndefinedShortCircuit(node.left, reportFunc);
+                        checkUndefinedShortCircuit(node.right, reportFunc);
+                    }
+                    break;
+                case "SequenceExpression":
+                    checkUndefinedShortCircuit(
+                        node.expressions[node.expressions.length - 1],
+                        reportFunc
+                    );
+                    break;
+                case "ConditionalExpression":
+                    checkUndefinedShortCircuit(node.consequent, reportFunc);
+                    checkUndefinedShortCircuit(node.alternate, reportFunc);
+                    break;
+                case "AwaitExpression":
+                    checkUndefinedShortCircuit(node.argument, reportFunc);
+                    break;
+                case "ChainExpression":
+                    reportFunc(node);
+                    break;
+                default:
+                    break;
+            }
+        }
+
+        /**
+         * Checks unsafe usage of optional chaining
+         * @param {ASTNode} node node to check
+         * @returns {void}
+         */
+        function checkUnsafeUsage(node) {
+            checkUndefinedShortCircuit(node, reportUnsafeUsage);
+        }
+
+        /**
+         * Checks unsafe arithmetic operations on optional chaining
+         * @param {ASTNode} node node to check
+         * @returns {void}
+         */
+        function checkUnsafeArithmetic(node) {
+            checkUndefinedShortCircuit(node, reportUnsafeArithmetic);
+        }
+
+        return {
+            "AssignmentExpression, AssignmentPattern"(node) {
+                if (isDestructuringPattern(node.left)) {
+                    checkUnsafeUsage(node.right);
+                }
+            },
+            "ClassDeclaration, ClassExpression"(node) {
+                checkUnsafeUsage(node.superClass);
+            },
+            CallExpression(node) {
+                if (!node.optional) {
+                    checkUnsafeUsage(node.callee);
+                }
+            },
+            NewExpression(node) {
+                checkUnsafeUsage(node.callee);
+            },
+            VariableDeclarator(node) {
+                if (isDestructuringPattern(node.id)) {
+                    checkUnsafeUsage(node.init);
+                }
+            },
+            MemberExpression(node) {
+                if (!node.optional) {
+                    checkUnsafeUsage(node.object);
+                }
+            },
+            TaggedTemplateExpression(node) {
+                checkUnsafeUsage(node.tag);
+            },
+            ForOfStatement(node) {
+                checkUnsafeUsage(node.right);
+            },
+            SpreadElement(node) {
+                if (node.parent && node.parent.type !== "ObjectExpression") {
+                    checkUnsafeUsage(node.argument);
+                }
+            },
+            BinaryExpression(node) {
+                if (UNSAFE_RELATIONAL_OPERATORS.has(node.operator)) {
+                    checkUnsafeUsage(node.right);
+                }
+                if (
+                    disallowArithmeticOperators &&
+                    UNSAFE_ARITHMETIC_OPERATORS.has(node.operator)
+                ) {
+                    checkUnsafeArithmetic(node.right);
+                    checkUnsafeArithmetic(node.left);
+                }
+            },
+            WithStatement(node) {
+                checkUnsafeUsage(node.object);
+            },
+            UnaryExpression(node) {
+                if (
+                    disallowArithmeticOperators &&
+                    UNSAFE_ARITHMETIC_OPERATORS.has(node.operator)
+                ) {
+                    checkUnsafeArithmetic(node.argument);
+                }
+            },
+            AssignmentExpression(node) {
+                if (
+                    disallowArithmeticOperators &&
+                    UNSAFE_ASSIGNMENT_OPERATORS.has(node.operator)
+                ) {
+                    checkUnsafeArithmetic(node.right);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-unused-expressions.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-unused-expressions.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-unused-expressions.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,186 @@
+/**
+ * @fileoverview Flag expressions in statement position that do not side effect
+ * @author Michael Ficarra
+ */
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/**
+ * Returns `true`.
+ * @returns {boolean} `true`.
+ */
+function alwaysTrue() {
+    return true;
+}
+
+/**
+ * Returns `false`.
+ * @returns {boolean} `false`.
+ */
+function alwaysFalse() {
+    return false;
+}
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow unused expressions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-unused-expressions"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowShortCircuit: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowTernary: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowTaggedTemplates: {
+                        type: "boolean",
+                        default: false
+                    },
+                    enforceForJSX: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unusedExpression: "Expected an assignment or function call and instead saw an expression."
+        }
+    },
+
+    create(context) {
+        const config = context.options[0] || {},
+            allowShortCircuit = config.allowShortCircuit || false,
+            allowTernary = config.allowTernary || false,
+            allowTaggedTemplates = config.allowTaggedTemplates || false,
+            enforceForJSX = config.enforceForJSX || false;
+
+        /**
+         * Has AST suggesting a directive.
+         * @param {ASTNode} node any node
+         * @returns {boolean} whether the given node structurally represents a directive
+         */
+        function looksLikeDirective(node) {
+            return node.type === "ExpressionStatement" &&
+                node.expression.type === "Literal" && typeof node.expression.value === "string";
+        }
+
+        /**
+         * Gets the leading sequence of members in a list that pass the predicate.
+         * @param {Function} predicate ([a] -> Boolean) the function used to make the determination
+         * @param {a[]} list the input list
+         * @returns {a[]} the leading sequence of members in the given list that pass the given predicate
+         */
+        function takeWhile(predicate, list) {
+            for (let i = 0; i < list.length; ++i) {
+                if (!predicate(list[i])) {
+                    return list.slice(0, i);
+                }
+            }
+            return list.slice();
+        }
+
+        /**
+         * Gets leading directives nodes in a Node body.
+         * @param {ASTNode} node a Program or BlockStatement node
+         * @returns {ASTNode[]} the leading sequence of directive nodes in the given node's body
+         */
+        function directives(node) {
+            return takeWhile(looksLikeDirective, node.body);
+        }
+
+        /**
+         * Detect if a Node is a directive.
+         * @param {ASTNode} node any node
+         * @returns {boolean} whether the given node is considered a directive in its current position
+         */
+        function isDirective(node) {
+
+            /**
+             * https://tc39.es/ecma262/#directive-prologue
+             *
+             * Only `FunctionBody`, `ScriptBody` and `ModuleBody` can have directive prologue.
+             * Class static blocks do not have directive prologue.
+             */
+            return astUtils.isTopLevelExpressionStatement(node) && directives(node.parent).includes(node);
+        }
+
+        /**
+         * The member functions return `true` if the type has no side-effects.
+         * Unknown nodes are handled as `false`, then this rule ignores those.
+         */
+        const Checker = Object.assign(Object.create(null), {
+            isDisallowed(node) {
+                return (Checker[node.type] || alwaysFalse)(node);
+            },
+
+            ArrayExpression: alwaysTrue,
+            ArrowFunctionExpression: alwaysTrue,
+            BinaryExpression: alwaysTrue,
+            ChainExpression(node) {
+                return Checker.isDisallowed(node.expression);
+            },
+            ClassExpression: alwaysTrue,
+            ConditionalExpression(node) {
+                if (allowTernary) {
+                    return Checker.isDisallowed(node.consequent) || Checker.isDisallowed(node.alternate);
+                }
+                return true;
+            },
+            FunctionExpression: alwaysTrue,
+            Identifier: alwaysTrue,
+            JSXElement() {
+                return enforceForJSX;
+            },
+            JSXFragment() {
+                return enforceForJSX;
+            },
+            Literal: alwaysTrue,
+            LogicalExpression(node) {
+                if (allowShortCircuit) {
+                    return Checker.isDisallowed(node.right);
+                }
+                return true;
+            },
+            MemberExpression: alwaysTrue,
+            MetaProperty: alwaysTrue,
+            ObjectExpression: alwaysTrue,
+            SequenceExpression: alwaysTrue,
+            TaggedTemplateExpression() {
+                return !allowTaggedTemplates;
+            },
+            TemplateLiteral: alwaysTrue,
+            ThisExpression: alwaysTrue,
+            UnaryExpression(node) {
+                return node.operator !== "void" && node.operator !== "delete";
+            }
+        });
+
+        return {
+            ExpressionStatement(node) {
+                if (Checker.isDisallowed(node.expression) && !isDirective(node)) {
+                    context.report({ node, messageId: "unusedExpression" });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-unused-labels.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-unused-labels.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-unused-labels.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,143 @@
+/**
+ * @fileoverview Rule to disallow unused labels.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow unused labels",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-unused-labels"
+        },
+
+        schema: [],
+
+        fixable: "code",
+
+        messages: {
+            unused: "'{{name}}:' is defined but never used."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        let scopeInfo = null;
+
+        /**
+         * Adds a scope info to the stack.
+         * @param {ASTNode} node A node to add. This is a LabeledStatement.
+         * @returns {void}
+         */
+        function enterLabeledScope(node) {
+            scopeInfo = {
+                label: node.label.name,
+                used: false,
+                upper: scopeInfo
+            };
+        }
+
+        /**
+         * Checks if a `LabeledStatement` node is fixable.
+         * For a node to be fixable, there must be no comments between the label and the body.
+         * Furthermore, is must be possible to remove the label without turning the body statement into a
+         * directive after other fixes are applied.
+         * @param {ASTNode} node The node to evaluate.
+         * @returns {boolean} Whether or not the node is fixable.
+         */
+        function isFixable(node) {
+
+            /*
+             * Only perform a fix if there are no comments between the label and the body. This will be the case
+             * when there is exactly one token/comment (the ":") between the label and the body.
+             */
+            if (sourceCode.getTokenAfter(node.label, { includeComments: true }) !==
+                sourceCode.getTokenBefore(node.body, { includeComments: true })) {
+                return false;
+            }
+
+            // Looking for the node's deepest ancestor which is not a `LabeledStatement`.
+            let ancestor = node.parent;
+
+            while (ancestor.type === "LabeledStatement") {
+                ancestor = ancestor.parent;
+            }
+
+            if (ancestor.type === "Program" ||
+                (ancestor.type === "BlockStatement" && astUtils.isFunction(ancestor.parent))) {
+                const { body } = node;
+
+                if (body.type === "ExpressionStatement" &&
+                    ((body.expression.type === "Literal" && typeof body.expression.value === "string") ||
+                    astUtils.isStaticTemplateLiteral(body.expression))) {
+                    return false; // potential directive
+                }
+            }
+            return true;
+        }
+
+        /**
+         * Removes the top of the stack.
+         * At the same time, this reports the label if it's never used.
+         * @param {ASTNode} node A node to report. This is a LabeledStatement.
+         * @returns {void}
+         */
+        function exitLabeledScope(node) {
+            if (!scopeInfo.used) {
+                context.report({
+                    node: node.label,
+                    messageId: "unused",
+                    data: node.label,
+                    fix: isFixable(node) ? fixer => fixer.removeRange([node.range[0], node.body.range[0]]) : null
+                });
+            }
+
+            scopeInfo = scopeInfo.upper;
+        }
+
+        /**
+         * Marks the label of a given node as used.
+         * @param {ASTNode} node A node to mark. This is a BreakStatement or
+         *      ContinueStatement.
+         * @returns {void}
+         */
+        function markAsUsed(node) {
+            if (!node.label) {
+                return;
+            }
+
+            const label = node.label.name;
+            let info = scopeInfo;
+
+            while (info) {
+                if (info.label === label) {
+                    info.used = true;
+                    break;
+                }
+                info = info.upper;
+            }
+        }
+
+        return {
+            LabeledStatement: enterLabeledScope,
+            "LabeledStatement:exit": exitLabeledScope,
+            BreakStatement: markAsUsed,
+            ContinueStatement: markAsUsed
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-unused-private-class-members.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-unused-private-class-members.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-unused-private-class-members.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,195 @@
+/**
+ * @fileoverview Rule to flag declared but unused private class members
+ * @author Tim van der Lippe
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow unused private class members",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-unused-private-class-members"
+        },
+
+        schema: [],
+
+        messages: {
+            unusedPrivateClassMember: "'{{classMemberName}}' is defined but never used."
+        }
+    },
+
+    create(context) {
+        const trackedClasses = [];
+
+        /**
+         * Check whether the current node is in a write only assignment.
+         * @param {ASTNode} privateIdentifierNode Node referring to a private identifier
+         * @returns {boolean} Whether the node is in a write only assignment
+         * @private
+         */
+        function isWriteOnlyAssignment(privateIdentifierNode) {
+            const parentStatement = privateIdentifierNode.parent.parent;
+            const isAssignmentExpression = parentStatement.type === "AssignmentExpression";
+
+            if (!isAssignmentExpression &&
+                parentStatement.type !== "ForInStatement" &&
+                parentStatement.type !== "ForOfStatement" &&
+                parentStatement.type !== "AssignmentPattern") {
+                return false;
+            }
+
+            // It is a write-only usage, since we still allow usages on the right for reads
+            if (parentStatement.left !== privateIdentifierNode.parent) {
+                return false;
+            }
+
+            // For any other operator (such as '+=') we still consider it a read operation
+            if (isAssignmentExpression && parentStatement.operator !== "=") {
+
+                /*
+                 * However, if the read operation is "discarded" in an empty statement, then
+                 * we consider it write only.
+                 */
+                return parentStatement.parent.type === "ExpressionStatement";
+            }
+
+            return true;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+
+            // Collect all declared members up front and assume they are all unused
+            ClassBody(classBodyNode) {
+                const privateMembers = new Map();
+
+                trackedClasses.unshift(privateMembers);
+                for (const bodyMember of classBodyNode.body) {
+                    if (bodyMember.type === "PropertyDefinition" || bodyMember.type === "MethodDefinition") {
+                        if (bodyMember.key.type === "PrivateIdentifier") {
+                            privateMembers.set(bodyMember.key.name, {
+                                declaredNode: bodyMember,
+                                isAccessor: bodyMember.type === "MethodDefinition" &&
+                                    (bodyMember.kind === "set" || bodyMember.kind === "get")
+                            });
+                        }
+                    }
+                }
+            },
+
+            /*
+             * Process all usages of the private identifier and remove a member from
+             * `declaredAndUnusedPrivateMembers` if we deem it used.
+             */
+            PrivateIdentifier(privateIdentifierNode) {
+                const classBody = trackedClasses.find(classProperties => classProperties.has(privateIdentifierNode.name));
+
+                // Can't happen, as it is a parser to have a missing class body, but let's code defensively here.
+                if (!classBody) {
+                    return;
+                }
+
+                // In case any other usage was already detected, we can short circuit the logic here.
+                const memberDefinition = classBody.get(privateIdentifierNode.name);
+
+                if (memberDefinition.isUsed) {
+                    return;
+                }
+
+                // The definition of the class member itself
+                if (privateIdentifierNode.parent.type === "PropertyDefinition" ||
+                    privateIdentifierNode.parent.type === "MethodDefinition") {
+                    return;
+                }
+
+                /*
+                 * Any usage of an accessor is considered a read, as the getter/setter can have
+                 * side-effects in its definition.
+                 */
+                if (memberDefinition.isAccessor) {
+                    memberDefinition.isUsed = true;
+                    return;
+                }
+
+                // Any assignments to this member, except for assignments that also read
+                if (isWriteOnlyAssignment(privateIdentifierNode)) {
+                    return;
+                }
+
+                const wrappingExpressionType = privateIdentifierNode.parent.parent.type;
+                const parentOfWrappingExpressionType = privateIdentifierNode.parent.parent.parent.type;
+
+                // A statement which only increments (`this.#x++;`)
+                if (wrappingExpressionType === "UpdateExpression" &&
+                    parentOfWrappingExpressionType === "ExpressionStatement") {
+                    return;
+                }
+
+                /*
+                 * ({ x: this.#usedInDestructuring } = bar);
+                 *
+                 * But should treat the following as a read:
+                 * ({ [this.#x]: a } = foo);
+                 */
+                if (wrappingExpressionType === "Property" &&
+                    parentOfWrappingExpressionType === "ObjectPattern" &&
+                    privateIdentifierNode.parent.parent.value === privateIdentifierNode.parent) {
+                    return;
+                }
+
+                // [...this.#unusedInRestPattern] = bar;
+                if (wrappingExpressionType === "RestElement") {
+                    return;
+                }
+
+                // [this.#unusedInAssignmentPattern] = bar;
+                if (wrappingExpressionType === "ArrayPattern") {
+                    return;
+                }
+
+                /*
+                 * We can't delete the memberDefinition, as we need to keep track of which member we are marking as used.
+                 * In the case of nested classes, we only mark the first member we encounter as used. If you were to delete
+                 * the member, then any subsequent usage could incorrectly mark the member of an encapsulating parent class
+                 * as used, which is incorrect.
+                 */
+                memberDefinition.isUsed = true;
+            },
+
+            /*
+             * Post-process the class members and report any remaining members.
+             * Since private members can only be accessed in the current class context,
+             * we can safely assume that all usages are within the current class body.
+             */
+            "ClassBody:exit"() {
+                const unusedPrivateMembers = trackedClasses.shift();
+
+                for (const [classMemberName, { declaredNode, isUsed }] of unusedPrivateMembers.entries()) {
+                    if (isUsed) {
+                        continue;
+                    }
+                    context.report({
+                        node: declaredNode,
+                        loc: declaredNode.key.loc,
+                        messageId: "unusedPrivateClassMember",
+                        data: {
+                            classMemberName: `#${classMemberName}`
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-unused-vars.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-unused-vars.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-unused-vars.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,718 @@
+/**
+ * @fileoverview Rule to flag declared but unused variables
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/**
+ * Bag of data used for formatting the `unusedVar` lint message.
+ * @typedef {Object} UnusedVarMessageData
+ * @property {string} varName The name of the unused var.
+ * @property {'defined'|'assigned a value'} action Description of the vars state.
+ * @property {string} additional Any additional info to be appended at the end.
+ */
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow unused variables",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-unused-vars"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["all", "local"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            vars: {
+                                enum: ["all", "local"]
+                            },
+                            varsIgnorePattern: {
+                                type: "string"
+                            },
+                            args: {
+                                enum: ["all", "after-used", "none"]
+                            },
+                            ignoreRestSiblings: {
+                                type: "boolean"
+                            },
+                            argsIgnorePattern: {
+                                type: "string"
+                            },
+                            caughtErrors: {
+                                enum: ["all", "none"]
+                            },
+                            caughtErrorsIgnorePattern: {
+                                type: "string"
+                            },
+                            destructuredArrayIgnorePattern: {
+                                type: "string"
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            unusedVar: "'{{varName}}' is {{action}} but never used{{additional}}."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        const REST_PROPERTY_TYPE = /^(?:RestElement|(?:Experimental)?RestProperty)$/u;
+
+        const config = {
+            vars: "all",
+            args: "after-used",
+            ignoreRestSiblings: false,
+            caughtErrors: "none"
+        };
+
+        const firstOption = context.options[0];
+
+        if (firstOption) {
+            if (typeof firstOption === "string") {
+                config.vars = firstOption;
+            } else {
+                config.vars = firstOption.vars || config.vars;
+                config.args = firstOption.args || config.args;
+                config.ignoreRestSiblings = firstOption.ignoreRestSiblings || config.ignoreRestSiblings;
+                config.caughtErrors = firstOption.caughtErrors || config.caughtErrors;
+
+                if (firstOption.varsIgnorePattern) {
+                    config.varsIgnorePattern = new RegExp(firstOption.varsIgnorePattern, "u");
+                }
+
+                if (firstOption.argsIgnorePattern) {
+                    config.argsIgnorePattern = new RegExp(firstOption.argsIgnorePattern, "u");
+                }
+
+                if (firstOption.caughtErrorsIgnorePattern) {
+                    config.caughtErrorsIgnorePattern = new RegExp(firstOption.caughtErrorsIgnorePattern, "u");
+                }
+
+                if (firstOption.destructuredArrayIgnorePattern) {
+                    config.destructuredArrayIgnorePattern = new RegExp(firstOption.destructuredArrayIgnorePattern, "u");
+                }
+            }
+        }
+
+        /**
+         * Generates the message data about the variable being defined and unused,
+         * including the ignore pattern if configured.
+         * @param {Variable} unusedVar eslint-scope variable object.
+         * @returns {UnusedVarMessageData} The message data to be used with this unused variable.
+         */
+        function getDefinedMessageData(unusedVar) {
+            const defType = unusedVar.defs && unusedVar.defs[0] && unusedVar.defs[0].type;
+            let type;
+            let pattern;
+
+            if (defType === "CatchClause" && config.caughtErrorsIgnorePattern) {
+                type = "args";
+                pattern = config.caughtErrorsIgnorePattern.toString();
+            } else if (defType === "Parameter" && config.argsIgnorePattern) {
+                type = "args";
+                pattern = config.argsIgnorePattern.toString();
+            } else if (defType !== "Parameter" && config.varsIgnorePattern) {
+                type = "vars";
+                pattern = config.varsIgnorePattern.toString();
+            }
+
+            const additional = type ? `. Allowed unused ${type} must match ${pattern}` : "";
+
+            return {
+                varName: unusedVar.name,
+                action: "defined",
+                additional
+            };
+        }
+
+        /**
+         * Generate the warning message about the variable being
+         * assigned and unused, including the ignore pattern if configured.
+         * @param {Variable} unusedVar eslint-scope variable object.
+         * @returns {UnusedVarMessageData} The message data to be used with this unused variable.
+         */
+        function getAssignedMessageData(unusedVar) {
+            const def = unusedVar.defs[0];
+            let additional = "";
+
+            if (config.destructuredArrayIgnorePattern && def && def.name.parent.type === "ArrayPattern") {
+                additional = `. Allowed unused elements of array destructuring patterns must match ${config.destructuredArrayIgnorePattern.toString()}`;
+            } else if (config.varsIgnorePattern) {
+                additional = `. Allowed unused vars must match ${config.varsIgnorePattern.toString()}`;
+            }
+
+            return {
+                varName: unusedVar.name,
+                action: "assigned a value",
+                additional
+            };
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const STATEMENT_TYPE = /(?:Statement|Declaration)$/u;
+
+        /**
+         * Determines if a given variable is being exported from a module.
+         * @param {Variable} variable eslint-scope variable object.
+         * @returns {boolean} True if the variable is exported, false if not.
+         * @private
+         */
+        function isExported(variable) {
+
+            const definition = variable.defs[0];
+
+            if (definition) {
+
+                let node = definition.node;
+
+                if (node.type === "VariableDeclarator") {
+                    node = node.parent;
+                } else if (definition.type === "Parameter") {
+                    return false;
+                }
+
+                return node.parent.type.indexOf("Export") === 0;
+            }
+            return false;
+
+        }
+
+        /**
+         * Checks whether a node is a sibling of the rest property or not.
+         * @param {ASTNode} node a node to check
+         * @returns {boolean} True if the node is a sibling of the rest property, otherwise false.
+         */
+        function hasRestSibling(node) {
+            return node.type === "Property" &&
+                node.parent.type === "ObjectPattern" &&
+                REST_PROPERTY_TYPE.test(node.parent.properties[node.parent.properties.length - 1].type);
+        }
+
+        /**
+         * Determines if a variable has a sibling rest property
+         * @param {Variable} variable eslint-scope variable object.
+         * @returns {boolean} True if the variable is exported, false if not.
+         * @private
+         */
+        function hasRestSpreadSibling(variable) {
+            if (config.ignoreRestSiblings) {
+                const hasRestSiblingDefinition = variable.defs.some(def => hasRestSibling(def.name.parent));
+                const hasRestSiblingReference = variable.references.some(ref => hasRestSibling(ref.identifier.parent));
+
+                return hasRestSiblingDefinition || hasRestSiblingReference;
+            }
+
+            return false;
+        }
+
+        /**
+         * Determines if a reference is a read operation.
+         * @param {Reference} ref An eslint-scope Reference
+         * @returns {boolean} whether the given reference represents a read operation
+         * @private
+         */
+        function isReadRef(ref) {
+            return ref.isRead();
+        }
+
+        /**
+         * Determine if an identifier is referencing an enclosing function name.
+         * @param {Reference} ref The reference to check.
+         * @param {ASTNode[]} nodes The candidate function nodes.
+         * @returns {boolean} True if it's a self-reference, false if not.
+         * @private
+         */
+        function isSelfReference(ref, nodes) {
+            let scope = ref.from;
+
+            while (scope) {
+                if (nodes.includes(scope.block)) {
+                    return true;
+                }
+
+                scope = scope.upper;
+            }
+
+            return false;
+        }
+
+        /**
+         * Gets a list of function definitions for a specified variable.
+         * @param {Variable} variable eslint-scope variable object.
+         * @returns {ASTNode[]} Function nodes.
+         * @private
+         */
+        function getFunctionDefinitions(variable) {
+            const functionDefinitions = [];
+
+            variable.defs.forEach(def => {
+                const { type, node } = def;
+
+                // FunctionDeclarations
+                if (type === "FunctionName") {
+                    functionDefinitions.push(node);
+                }
+
+                // FunctionExpressions
+                if (type === "Variable" && node.init &&
+                    (node.init.type === "FunctionExpression" || node.init.type === "ArrowFunctionExpression")) {
+                    functionDefinitions.push(node.init);
+                }
+            });
+            return functionDefinitions;
+        }
+
+        /**
+         * Checks the position of given nodes.
+         * @param {ASTNode} inner A node which is expected as inside.
+         * @param {ASTNode} outer A node which is expected as outside.
+         * @returns {boolean} `true` if the `inner` node exists in the `outer` node.
+         * @private
+         */
+        function isInside(inner, outer) {
+            return (
+                inner.range[0] >= outer.range[0] &&
+                inner.range[1] <= outer.range[1]
+            );
+        }
+
+        /**
+         * Checks whether a given node is unused expression or not.
+         * @param {ASTNode} node The node itself
+         * @returns {boolean} The node is an unused expression.
+         * @private
+         */
+        function isUnusedExpression(node) {
+            const parent = node.parent;
+
+            if (parent.type === "ExpressionStatement") {
+                return true;
+            }
+
+            if (parent.type === "SequenceExpression") {
+                const isLastExpression = parent.expressions[parent.expressions.length - 1] === node;
+
+                if (!isLastExpression) {
+                    return true;
+                }
+                return isUnusedExpression(parent);
+            }
+
+            return false;
+        }
+
+        /**
+         * If a given reference is left-hand side of an assignment, this gets
+         * the right-hand side node of the assignment.
+         *
+         * In the following cases, this returns null.
+         *
+         * - The reference is not the LHS of an assignment expression.
+         * - The reference is inside of a loop.
+         * - The reference is inside of a function scope which is different from
+         *   the declaration.
+         * @param {eslint-scope.Reference} ref A reference to check.
+         * @param {ASTNode} prevRhsNode The previous RHS node.
+         * @returns {ASTNode|null} The RHS node or null.
+         * @private
+         */
+        function getRhsNode(ref, prevRhsNode) {
+            const id = ref.identifier;
+            const parent = id.parent;
+            const refScope = ref.from.variableScope;
+            const varScope = ref.resolved.scope.variableScope;
+            const canBeUsedLater = refScope !== varScope || astUtils.isInLoop(id);
+
+            /*
+             * Inherits the previous node if this reference is in the node.
+             * This is for `a = a + a`-like code.
+             */
+            if (prevRhsNode && isInside(id, prevRhsNode)) {
+                return prevRhsNode;
+            }
+
+            if (parent.type === "AssignmentExpression" &&
+                isUnusedExpression(parent) &&
+                id === parent.left &&
+                !canBeUsedLater
+            ) {
+                return parent.right;
+            }
+            return null;
+        }
+
+        /**
+         * Checks whether a given function node is stored to somewhere or not.
+         * If the function node is stored, the function can be used later.
+         * @param {ASTNode} funcNode A function node to check.
+         * @param {ASTNode} rhsNode The RHS node of the previous assignment.
+         * @returns {boolean} `true` if under the following conditions:
+         *      - the funcNode is assigned to a variable.
+         *      - the funcNode is bound as an argument of a function call.
+         *      - the function is bound to a property and the object satisfies above conditions.
+         * @private
+         */
+        function isStorableFunction(funcNode, rhsNode) {
+            let node = funcNode;
+            let parent = funcNode.parent;
+
+            while (parent && isInside(parent, rhsNode)) {
+                switch (parent.type) {
+                    case "SequenceExpression":
+                        if (parent.expressions[parent.expressions.length - 1] !== node) {
+                            return false;
+                        }
+                        break;
+
+                    case "CallExpression":
+                    case "NewExpression":
+                        return parent.callee !== node;
+
+                    case "AssignmentExpression":
+                    case "TaggedTemplateExpression":
+                    case "YieldExpression":
+                        return true;
+
+                    default:
+                        if (STATEMENT_TYPE.test(parent.type)) {
+
+                            /*
+                             * If it encountered statements, this is a complex pattern.
+                             * Since analyzing complex patterns is hard, this returns `true` to avoid false positive.
+                             */
+                            return true;
+                        }
+                }
+
+                node = parent;
+                parent = parent.parent;
+            }
+
+            return false;
+        }
+
+        /**
+         * Checks whether a given Identifier node exists inside of a function node which can be used later.
+         *
+         * "can be used later" means:
+         * - the function is assigned to a variable.
+         * - the function is bound to a property and the object can be used later.
+         * - the function is bound as an argument of a function call.
+         *
+         * If a reference exists in a function which can be used later, the reference is read when the function is called.
+         * @param {ASTNode} id An Identifier node to check.
+         * @param {ASTNode} rhsNode The RHS node of the previous assignment.
+         * @returns {boolean} `true` if the `id` node exists inside of a function node which can be used later.
+         * @private
+         */
+        function isInsideOfStorableFunction(id, rhsNode) {
+            const funcNode = astUtils.getUpperFunction(id);
+
+            return (
+                funcNode &&
+                isInside(funcNode, rhsNode) &&
+                isStorableFunction(funcNode, rhsNode)
+            );
+        }
+
+        /**
+         * Checks whether a given reference is a read to update itself or not.
+         * @param {eslint-scope.Reference} ref A reference to check.
+         * @param {ASTNode} rhsNode The RHS node of the previous assignment.
+         * @returns {boolean} The reference is a read to update itself.
+         * @private
+         */
+        function isReadForItself(ref, rhsNode) {
+            const id = ref.identifier;
+            const parent = id.parent;
+
+            return ref.isRead() && (
+
+                // self update. e.g. `a += 1`, `a++`
+                (
+                    (
+                        parent.type === "AssignmentExpression" &&
+                        parent.left === id &&
+                        isUnusedExpression(parent) &&
+                        !astUtils.isLogicalAssignmentOperator(parent.operator)
+                    ) ||
+                    (
+                        parent.type === "UpdateExpression" &&
+                        isUnusedExpression(parent)
+                    )
+                ) ||
+
+                // in RHS of an assignment for itself. e.g. `a = a + 1`
+                (
+                    rhsNode &&
+                    isInside(id, rhsNode) &&
+                    !isInsideOfStorableFunction(id, rhsNode)
+                )
+            );
+        }
+
+        /**
+         * Determine if an identifier is used either in for-in or for-of loops.
+         * @param {Reference} ref The reference to check.
+         * @returns {boolean} whether reference is used in the for-in loops
+         * @private
+         */
+        function isForInOfRef(ref) {
+            let target = ref.identifier.parent;
+
+
+            // "for (var ...) { return; }"
+            if (target.type === "VariableDeclarator") {
+                target = target.parent.parent;
+            }
+
+            if (target.type !== "ForInStatement" && target.type !== "ForOfStatement") {
+                return false;
+            }
+
+            // "for (...) { return; }"
+            if (target.body.type === "BlockStatement") {
+                target = target.body.body[0];
+
+            // "for (...) return;"
+            } else {
+                target = target.body;
+            }
+
+            // For empty loop body
+            if (!target) {
+                return false;
+            }
+
+            return target.type === "ReturnStatement";
+        }
+
+        /**
+         * Determines if the variable is used.
+         * @param {Variable} variable The variable to check.
+         * @returns {boolean} True if the variable is used
+         * @private
+         */
+        function isUsedVariable(variable) {
+            const functionNodes = getFunctionDefinitions(variable),
+                isFunctionDefinition = functionNodes.length > 0;
+            let rhsNode = null;
+
+            return variable.references.some(ref => {
+                if (isForInOfRef(ref)) {
+                    return true;
+                }
+
+                const forItself = isReadForItself(ref, rhsNode);
+
+                rhsNode = getRhsNode(ref, rhsNode);
+
+                return (
+                    isReadRef(ref) &&
+                    !forItself &&
+                    !(isFunctionDefinition && isSelfReference(ref, functionNodes))
+                );
+            });
+        }
+
+        /**
+         * Checks whether the given variable is after the last used parameter.
+         * @param {eslint-scope.Variable} variable The variable to check.
+         * @returns {boolean} `true` if the variable is defined after the last
+         * used parameter.
+         */
+        function isAfterLastUsedArg(variable) {
+            const def = variable.defs[0];
+            const params = sourceCode.getDeclaredVariables(def.node);
+            const posteriorParams = params.slice(params.indexOf(variable) + 1);
+
+            // If any used parameters occur after this parameter, do not report.
+            return !posteriorParams.some(v => v.references.length > 0 || v.eslintUsed);
+        }
+
+        /**
+         * Gets an array of variables without read references.
+         * @param {Scope} scope an eslint-scope Scope object.
+         * @param {Variable[]} unusedVars an array that saving result.
+         * @returns {Variable[]} unused variables of the scope and descendant scopes.
+         * @private
+         */
+        function collectUnusedVariables(scope, unusedVars) {
+            const variables = scope.variables;
+            const childScopes = scope.childScopes;
+            let i, l;
+
+            if (scope.type !== "global" || config.vars === "all") {
+                for (i = 0, l = variables.length; i < l; ++i) {
+                    const variable = variables[i];
+
+                    // skip a variable of class itself name in the class scope
+                    if (scope.type === "class" && scope.block.id === variable.identifiers[0]) {
+                        continue;
+                    }
+
+                    // skip function expression names and variables marked with markVariableAsUsed()
+                    if (scope.functionExpressionScope || variable.eslintUsed) {
+                        continue;
+                    }
+
+                    // skip implicit "arguments" variable
+                    if (scope.type === "function" && variable.name === "arguments" && variable.identifiers.length === 0) {
+                        continue;
+                    }
+
+                    // explicit global variables don't have definitions.
+                    const def = variable.defs[0];
+
+                    if (def) {
+                        const type = def.type;
+                        const refUsedInArrayPatterns = variable.references.some(ref => ref.identifier.parent.type === "ArrayPattern");
+
+                        // skip elements of array destructuring patterns
+                        if (
+                            (
+                                def.name.parent.type === "ArrayPattern" ||
+                                refUsedInArrayPatterns
+                            ) &&
+                            config.destructuredArrayIgnorePattern &&
+                            config.destructuredArrayIgnorePattern.test(def.name.name)
+                        ) {
+                            continue;
+                        }
+
+                        // skip catch variables
+                        if (type === "CatchClause") {
+                            if (config.caughtErrors === "none") {
+                                continue;
+                            }
+
+                            // skip ignored parameters
+                            if (config.caughtErrorsIgnorePattern && config.caughtErrorsIgnorePattern.test(def.name.name)) {
+                                continue;
+                            }
+                        }
+
+                        if (type === "Parameter") {
+
+                            // skip any setter argument
+                            if ((def.node.parent.type === "Property" || def.node.parent.type === "MethodDefinition") && def.node.parent.kind === "set") {
+                                continue;
+                            }
+
+                            // if "args" option is "none", skip any parameter
+                            if (config.args === "none") {
+                                continue;
+                            }
+
+                            // skip ignored parameters
+                            if (config.argsIgnorePattern && config.argsIgnorePattern.test(def.name.name)) {
+                                continue;
+                            }
+
+                            // if "args" option is "after-used", skip used variables
+                            if (config.args === "after-used" && astUtils.isFunction(def.name.parent) && !isAfterLastUsedArg(variable)) {
+                                continue;
+                            }
+                        } else {
+
+                            // skip ignored variables
+                            if (config.varsIgnorePattern && config.varsIgnorePattern.test(def.name.name)) {
+                                continue;
+                            }
+                        }
+                    }
+
+                    if (!isUsedVariable(variable) && !isExported(variable) && !hasRestSpreadSibling(variable)) {
+                        unusedVars.push(variable);
+                    }
+                }
+            }
+
+            for (i = 0, l = childScopes.length; i < l; ++i) {
+                collectUnusedVariables(childScopes[i], unusedVars);
+            }
+
+            return unusedVars;
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            "Program:exit"(programNode) {
+                const unusedVars = collectUnusedVariables(sourceCode.getScope(programNode), []);
+
+                for (let i = 0, l = unusedVars.length; i < l; ++i) {
+                    const unusedVar = unusedVars[i];
+
+                    // Report the first declaration.
+                    if (unusedVar.defs.length > 0) {
+
+                        // report last write reference, https://github.com/eslint/eslint/issues/14324
+                        const writeReferences = unusedVar.references.filter(ref => ref.isWrite() && ref.from.variableScope === unusedVar.scope.variableScope);
+
+                        let referenceToReport;
+
+                        if (writeReferences.length > 0) {
+                            referenceToReport = writeReferences[writeReferences.length - 1];
+                        }
+
+                        context.report({
+                            node: referenceToReport ? referenceToReport.identifier : unusedVar.identifiers[0],
+                            messageId: "unusedVar",
+                            data: unusedVar.references.some(ref => ref.isWrite())
+                                ? getAssignedMessageData(unusedVar)
+                                : getDefinedMessageData(unusedVar)
+                        });
+
+                    // If there are no regular declaration, report the first `/*globals*/` comment directive.
+                    } else if (unusedVar.eslintExplicitGlobalComments) {
+                        const directiveComment = unusedVar.eslintExplicitGlobalComments[0];
+
+                        context.report({
+                            node: programNode,
+                            loc: astUtils.getNameLocationInGlobalDirectiveComment(sourceCode, directiveComment, unusedVar.name),
+                            messageId: "unusedVar",
+                            data: getDefinedMessageData(unusedVar)
+                        });
+                    }
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-use-before-define.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-use-before-define.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-use-before-define.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,348 @@
+/**
+ * @fileoverview Rule to flag use of variables before they are defined
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const SENTINEL_TYPE = /^(?:(?:Function|Class)(?:Declaration|Expression)|ArrowFunctionExpression|CatchClause|ImportDeclaration|ExportNamedDeclaration)$/u;
+const FOR_IN_OF_TYPE = /^For(?:In|Of)Statement$/u;
+
+/**
+ * Parses a given value as options.
+ * @param {any} options A value to parse.
+ * @returns {Object} The parsed options.
+ */
+function parseOptions(options) {
+    let functions = true;
+    let classes = true;
+    let variables = true;
+    let allowNamedExports = false;
+
+    if (typeof options === "string") {
+        functions = (options !== "nofunc");
+    } else if (typeof options === "object" && options !== null) {
+        functions = options.functions !== false;
+        classes = options.classes !== false;
+        variables = options.variables !== false;
+        allowNamedExports = !!options.allowNamedExports;
+    }
+
+    return { functions, classes, variables, allowNamedExports };
+}
+
+/**
+ * Checks whether or not a given location is inside of the range of a given node.
+ * @param {ASTNode} node An node to check.
+ * @param {number} location A location to check.
+ * @returns {boolean} `true` if the location is inside of the range of the node.
+ */
+function isInRange(node, location) {
+    return node && node.range[0] <= location && location <= node.range[1];
+}
+
+/**
+ * Checks whether or not a given location is inside of the range of a class static initializer.
+ * Static initializers are static blocks and initializers of static fields.
+ * @param {ASTNode} node `ClassBody` node to check static initializers.
+ * @param {number} location A location to check.
+ * @returns {boolean} `true` if the location is inside of a class static initializer.
+ */
+function isInClassStaticInitializerRange(node, location) {
+    return node.body.some(classMember => (
+        (
+            classMember.type === "StaticBlock" &&
+            isInRange(classMember, location)
+        ) ||
+        (
+            classMember.type === "PropertyDefinition" &&
+            classMember.static &&
+            classMember.value &&
+            isInRange(classMember.value, location)
+        )
+    ));
+}
+
+/**
+ * Checks whether a given scope is the scope of a class static initializer.
+ * Static initializers are static blocks and initializers of static fields.
+ * @param {eslint-scope.Scope} scope A scope to check.
+ * @returns {boolean} `true` if the scope is a class static initializer scope.
+ */
+function isClassStaticInitializerScope(scope) {
+    if (scope.type === "class-static-block") {
+        return true;
+    }
+
+    if (scope.type === "class-field-initializer") {
+
+        // `scope.block` is PropertyDefinition#value node
+        const propertyDefinition = scope.block.parent;
+
+        return propertyDefinition.static;
+    }
+
+    return false;
+}
+
+/**
+ * Checks whether a given reference is evaluated in an execution context
+ * that isn't the one where the variable it refers to is defined.
+ * Execution contexts are:
+ * - top-level
+ * - functions
+ * - class field initializers (implicit functions)
+ * - class static blocks (implicit functions)
+ * Static class field initializers and class static blocks are automatically run during the class definition evaluation,
+ * and therefore we'll consider them as a part of the parent execution context.
+ * Example:
+ *
+ *   const x = 1;
+ *
+ *   x; // returns `false`
+ *   () => x; // returns `true`
+ *
+ *   class C {
+ *       field = x; // returns `true`
+ *       static field = x; // returns `false`
+ *
+ *       method() {
+ *           x; // returns `true`
+ *       }
+ *
+ *       static method() {
+ *           x; // returns `true`
+ *       }
+ *
+ *       static {
+ *           x; // returns `false`
+ *       }
+ *   }
+ * @param {eslint-scope.Reference} reference A reference to check.
+ * @returns {boolean} `true` if the reference is from a separate execution context.
+ */
+function isFromSeparateExecutionContext(reference) {
+    const variable = reference.resolved;
+    let scope = reference.from;
+
+    // Scope#variableScope represents execution context
+    while (variable.scope.variableScope !== scope.variableScope) {
+        if (isClassStaticInitializerScope(scope.variableScope)) {
+            scope = scope.variableScope.upper;
+        } else {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+/**
+ * Checks whether or not a given reference is evaluated during the initialization of its variable.
+ *
+ * This returns `true` in the following cases:
+ *
+ *     var a = a
+ *     var [a = a] = list
+ *     var {a = a} = obj
+ *     for (var a in a) {}
+ *     for (var a of a) {}
+ *     var C = class { [C]; };
+ *     var C = class { static foo = C; };
+ *     var C = class { static { foo = C; } };
+ *     class C extends C {}
+ *     class C extends (class { static foo = C; }) {}
+ *     class C { [C]; }
+ * @param {Reference} reference A reference to check.
+ * @returns {boolean} `true` if the reference is evaluated during the initialization.
+ */
+function isEvaluatedDuringInitialization(reference) {
+    if (isFromSeparateExecutionContext(reference)) {
+
+        /*
+         * Even if the reference appears in the initializer, it isn't evaluated during the initialization.
+         * For example, `const x = () => x;` is valid.
+         */
+        return false;
+    }
+
+    const location = reference.identifier.range[1];
+    const definition = reference.resolved.defs[0];
+
+    if (definition.type === "ClassName") {
+
+        // `ClassDeclaration` or `ClassExpression`
+        const classDefinition = definition.node;
+
+        return (
+            isInRange(classDefinition, location) &&
+
+            /*
+             * Class binding is initialized before running static initializers.
+             * For example, `class C { static foo = C; static { bar = C; } }` is valid.
+             */
+            !isInClassStaticInitializerRange(classDefinition.body, location)
+        );
+    }
+
+    let node = definition.name.parent;
+
+    while (node) {
+        if (node.type === "VariableDeclarator") {
+            if (isInRange(node.init, location)) {
+                return true;
+            }
+            if (FOR_IN_OF_TYPE.test(node.parent.parent.type) &&
+                isInRange(node.parent.parent.right, location)
+            ) {
+                return true;
+            }
+            break;
+        } else if (node.type === "AssignmentPattern") {
+            if (isInRange(node.right, location)) {
+                return true;
+            }
+        } else if (SENTINEL_TYPE.test(node.type)) {
+            break;
+        }
+
+        node = node.parent;
+    }
+
+    return false;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow the use of variables before they are defined",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-use-before-define"
+        },
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["nofunc"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            functions: { type: "boolean" },
+                            classes: { type: "boolean" },
+                            variables: { type: "boolean" },
+                            allowNamedExports: { type: "boolean" }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            usedBeforeDefined: "'{{name}}' was used before it was defined."
+        }
+    },
+
+    create(context) {
+        const options = parseOptions(context.options[0]);
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Determines whether a given reference should be checked.
+         *
+         * Returns `false` if the reference is:
+         * - initialization's (e.g., `let a = 1`).
+         * - referring to an undefined variable (i.e., if it's an unresolved reference).
+         * - referring to a variable that is defined, but not in the given source code
+         *   (e.g., global environment variable or `arguments` in functions).
+         * - allowed by options.
+         * @param {eslint-scope.Reference} reference The reference
+         * @returns {boolean} `true` if the reference should be checked
+         */
+        function shouldCheck(reference) {
+            if (reference.init) {
+                return false;
+            }
+
+            const { identifier } = reference;
+
+            if (
+                options.allowNamedExports &&
+                identifier.parent.type === "ExportSpecifier" &&
+                identifier.parent.local === identifier
+            ) {
+                return false;
+            }
+
+            const variable = reference.resolved;
+
+            if (!variable || variable.defs.length === 0) {
+                return false;
+            }
+
+            const definitionType = variable.defs[0].type;
+
+            if (!options.functions && definitionType === "FunctionName") {
+                return false;
+            }
+
+            if (
+                (
+                    !options.variables && definitionType === "Variable" ||
+                    !options.classes && definitionType === "ClassName"
+                ) &&
+
+                // don't skip checking the reference if it's in the same execution context, because of TDZ
+                isFromSeparateExecutionContext(reference)
+            ) {
+                return false;
+            }
+
+            return true;
+        }
+
+        /**
+         * Finds and validates all references in a given scope and its child scopes.
+         * @param {eslint-scope.Scope} scope The scope object.
+         * @returns {void}
+         */
+        function checkReferencesInScope(scope) {
+            scope.references.filter(shouldCheck).forEach(reference => {
+                const variable = reference.resolved;
+                const definitionIdentifier = variable.defs[0].name;
+
+                if (
+                    reference.identifier.range[1] < definitionIdentifier.range[1] ||
+                    isEvaluatedDuringInitialization(reference)
+                ) {
+                    context.report({
+                        node: reference.identifier,
+                        messageId: "usedBeforeDefined",
+                        data: reference.identifier
+                    });
+                }
+            });
+
+            scope.childScopes.forEach(checkReferencesInScope);
+        }
+
+        return {
+            Program(node) {
+                checkReferencesInScope(sourceCode.getScope(node));
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-useless-backreference.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-useless-backreference.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-useless-backreference.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,194 @@
+/**
+ * @fileoverview Rule to disallow useless backreferences in regular expressions
+ * @author Milos Djermanovic
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { CALL, CONSTRUCT, ReferenceTracker, getStringIfConstant } = require("@eslint-community/eslint-utils");
+const { RegExpParser, visitRegExpAST } = require("@eslint-community/regexpp");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const parser = new RegExpParser();
+
+/**
+ * Finds the path from the given `regexpp` AST node to the root node.
+ * @param {regexpp.Node} node Node.
+ * @returns {regexpp.Node[]} Array that starts with the given node and ends with the root node.
+ */
+function getPathToRoot(node) {
+    const path = [];
+    let current = node;
+
+    do {
+        path.push(current);
+        current = current.parent;
+    } while (current);
+
+    return path;
+}
+
+/**
+ * Determines whether the given `regexpp` AST node is a lookaround node.
+ * @param {regexpp.Node} node Node.
+ * @returns {boolean} `true` if it is a lookaround node.
+ */
+function isLookaround(node) {
+    return node.type === "Assertion" &&
+        (node.kind === "lookahead" || node.kind === "lookbehind");
+}
+
+/**
+ * Determines whether the given `regexpp` AST node is a negative lookaround node.
+ * @param {regexpp.Node} node Node.
+ * @returns {boolean} `true` if it is a negative lookaround node.
+ */
+function isNegativeLookaround(node) {
+    return isLookaround(node) && node.negate;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow useless backreferences in regular expressions",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-useless-backreference"
+        },
+
+        schema: [],
+
+        messages: {
+            nested: "Backreference '{{ bref }}' will be ignored. It references group '{{ group }}' from within that group.",
+            forward: "Backreference '{{ bref }}' will be ignored. It references group '{{ group }}' which appears later in the pattern.",
+            backward: "Backreference '{{ bref }}' will be ignored. It references group '{{ group }}' which appears before in the same lookbehind.",
+            disjunctive: "Backreference '{{ bref }}' will be ignored. It references group '{{ group }}' which is in another alternative.",
+            intoNegativeLookaround: "Backreference '{{ bref }}' will be ignored. It references group '{{ group }}' which is in a negative lookaround."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Checks and reports useless backreferences in the given regular expression.
+         * @param {ASTNode} node Node that represents regular expression. A regex literal or RegExp constructor call.
+         * @param {string} pattern Regular expression pattern.
+         * @param {string} flags Regular expression flags.
+         * @returns {void}
+         */
+        function checkRegex(node, pattern, flags) {
+            let regExpAST;
+
+            try {
+                regExpAST = parser.parsePattern(pattern, 0, pattern.length, { unicode: flags.includes("u"), unicodeSets: flags.includes("v") });
+            } catch {
+
+                // Ignore regular expressions with syntax errors
+                return;
+            }
+
+            visitRegExpAST(regExpAST, {
+                onBackreferenceEnter(bref) {
+                    const group = bref.resolved,
+                        brefPath = getPathToRoot(bref),
+                        groupPath = getPathToRoot(group);
+                    let messageId = null;
+
+                    if (brefPath.includes(group)) {
+
+                        // group is bref's ancestor => bref is nested ('nested reference') => group hasn't matched yet when bref starts to match.
+                        messageId = "nested";
+                    } else {
+
+                        // Start from the root to find the lowest common ancestor.
+                        let i = brefPath.length - 1,
+                            j = groupPath.length - 1;
+
+                        do {
+                            i--;
+                            j--;
+                        } while (brefPath[i] === groupPath[j]);
+
+                        const indexOfLowestCommonAncestor = j + 1,
+                            groupCut = groupPath.slice(0, indexOfLowestCommonAncestor),
+                            commonPath = groupPath.slice(indexOfLowestCommonAncestor),
+                            lowestCommonLookaround = commonPath.find(isLookaround),
+                            isMatchingBackward = lowestCommonLookaround && lowestCommonLookaround.kind === "lookbehind";
+
+                        if (!isMatchingBackward && bref.end <= group.start) {
+
+                            // bref is left, group is right ('forward reference') => group hasn't matched yet when bref starts to match.
+                            messageId = "forward";
+                        } else if (isMatchingBackward && group.end <= bref.start) {
+
+                            // the opposite of the previous when the regex is matching backward in a lookbehind context.
+                            messageId = "backward";
+                        } else if (groupCut[groupCut.length - 1].type === "Alternative") {
+
+                            // group's and bref's ancestor nodes below the lowest common ancestor are sibling alternatives => they're disjunctive.
+                            messageId = "disjunctive";
+                        } else if (groupCut.some(isNegativeLookaround)) {
+
+                            // group is in a negative lookaround which isn't bref's ancestor => group has already failed when bref starts to match.
+                            messageId = "intoNegativeLookaround";
+                        }
+                    }
+
+                    if (messageId) {
+                        context.report({
+                            node,
+                            messageId,
+                            data: {
+                                bref: bref.raw,
+                                group: group.raw
+                            }
+                        });
+                    }
+                }
+            });
+        }
+
+        return {
+            "Literal[regex]"(node) {
+                const { pattern, flags } = node.regex;
+
+                checkRegex(node, pattern, flags);
+            },
+            Program(node) {
+                const scope = sourceCode.getScope(node),
+                    tracker = new ReferenceTracker(scope),
+                    traceMap = {
+                        RegExp: {
+                            [CALL]: true,
+                            [CONSTRUCT]: true
+                        }
+                    };
+
+                for (const { node: refNode } of tracker.iterateGlobalReferences(traceMap)) {
+                    const [patternNode, flagsNode] = refNode.arguments,
+                        pattern = getStringIfConstant(patternNode, scope),
+                        flags = getStringIfConstant(flagsNode, scope);
+
+                    if (typeof pattern === "string") {
+                        checkRegex(refNode, pattern, flags || "");
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-useless-call.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-useless-call.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-useless-call.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,90 @@
+/**
+ * @fileoverview A rule to disallow unnecessary `.call()` and `.apply()`.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a node is a `.call()`/`.apply()`.
+ * @param {ASTNode} node A CallExpression node to check.
+ * @returns {boolean} Whether or not the node is a `.call()`/`.apply()`.
+ */
+function isCallOrNonVariadicApply(node) {
+    const callee = astUtils.skipChainExpression(node.callee);
+
+    return (
+        callee.type === "MemberExpression" &&
+        callee.property.type === "Identifier" &&
+        callee.computed === false &&
+        (
+            (callee.property.name === "call" && node.arguments.length >= 1) ||
+            (callee.property.name === "apply" && node.arguments.length === 2 && node.arguments[1].type === "ArrayExpression")
+        )
+    );
+}
+
+
+/**
+ * Checks whether or not `thisArg` is not changed by `.call()`/`.apply()`.
+ * @param {ASTNode|null} expectedThis The node that is the owner of the applied function.
+ * @param {ASTNode} thisArg The node that is given to the first argument of the `.call()`/`.apply()`.
+ * @param {SourceCode} sourceCode The ESLint source code object.
+ * @returns {boolean} Whether or not `thisArg` is not changed by `.call()`/`.apply()`.
+ */
+function isValidThisArg(expectedThis, thisArg, sourceCode) {
+    if (!expectedThis) {
+        return astUtils.isNullOrUndefined(thisArg);
+    }
+    return astUtils.equalTokens(expectedThis, thisArg, sourceCode);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow unnecessary calls to `.call()` and `.apply()`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-useless-call"
+        },
+
+        schema: [],
+
+        messages: {
+            unnecessaryCall: "Unnecessary '.{{name}}()'."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        return {
+            CallExpression(node) {
+                if (!isCallOrNonVariadicApply(node)) {
+                    return;
+                }
+
+                const callee = astUtils.skipChainExpression(node.callee);
+                const applied = astUtils.skipChainExpression(callee.object);
+                const expectedThis = (applied.type === "MemberExpression") ? applied.object : null;
+                const thisArg = node.arguments[0];
+
+                if (isValidThisArg(expectedThis, thisArg, sourceCode)) {
+                    context.report({ node, messageId: "unnecessaryCall", data: { name: callee.property.name } });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-useless-catch.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-useless-catch.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-useless-catch.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,57 @@
+/**
+ * @fileoverview Reports useless `catch` clauses that just rethrow their error.
+ * @author Teddy Katz
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow unnecessary `catch` clauses",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-useless-catch"
+        },
+
+        schema: [],
+
+        messages: {
+            unnecessaryCatchClause: "Unnecessary catch clause.",
+            unnecessaryCatch: "Unnecessary try/catch wrapper."
+        }
+    },
+
+    create(context) {
+        return {
+            CatchClause(node) {
+                if (
+                    node.param &&
+                    node.param.type === "Identifier" &&
+                    node.body.body.length &&
+                    node.body.body[0].type === "ThrowStatement" &&
+                    node.body.body[0].argument.type === "Identifier" &&
+                    node.body.body[0].argument.name === node.param.name
+                ) {
+                    if (node.parent.finalizer) {
+                        context.report({
+                            node,
+                            messageId: "unnecessaryCatchClause"
+                        });
+                    } else {
+                        context.report({
+                            node: node.parent,
+                            messageId: "unnecessaryCatch"
+                        });
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-useless-computed-key.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-useless-computed-key.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-useless-computed-key.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,168 @@
+/**
+ * @fileoverview Rule to disallow unnecessary computed property keys in object literals
+ * @author Burak Yigit Kaya
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines whether the computed key syntax is unnecessarily used for the given node.
+ * In particular, it determines whether removing the square brackets and using the content between them
+ * directly as the key (e.g. ['foo'] -> 'foo') would produce valid syntax and preserve the same behavior.
+ * Valid non-computed keys are only: identifiers, number literals and string literals.
+ * Only literals can preserve the same behavior, with a few exceptions for specific node types:
+ * Property
+ *   - { ["__proto__"]: foo } defines a property named "__proto__"
+ *     { "__proto__": foo } defines object's prototype
+ * PropertyDefinition
+ *   - class C { ["constructor"]; } defines an instance field named "constructor"
+ *     class C { "constructor"; } produces a parsing error
+ *   - class C { static ["constructor"]; } defines a static field named "constructor"
+ *     class C { static "constructor"; } produces a parsing error
+ *   - class C { static ["prototype"]; } produces a runtime error (doesn't break the whole script)
+ *     class C { static "prototype"; } produces a parsing error (breaks the whole script)
+ * MethodDefinition
+ *   - class C { ["constructor"]() {} } defines a prototype method named "constructor"
+ *     class C { "constructor"() {} } defines the constructor
+ *   - class C { static ["prototype"]() {} } produces a runtime error (doesn't break the whole script)
+ *     class C { static "prototype"() {} } produces a parsing error (breaks the whole script)
+ * @param {ASTNode} node The node to check. It can be `Property`, `PropertyDefinition` or `MethodDefinition`.
+ * @throws {Error} (Unreachable.)
+ * @returns {void} `true` if the node has useless computed key.
+ */
+function hasUselessComputedKey(node) {
+    if (!node.computed) {
+        return false;
+    }
+
+    const { key } = node;
+
+    if (key.type !== "Literal") {
+        return false;
+    }
+
+    const { value } = key;
+
+    if (typeof value !== "number" && typeof value !== "string") {
+        return false;
+    }
+
+    switch (node.type) {
+        case "Property":
+            return value !== "__proto__";
+
+        case "PropertyDefinition":
+            if (node.static) {
+                return value !== "constructor" && value !== "prototype";
+            }
+
+            return value !== "constructor";
+
+        case "MethodDefinition":
+            if (node.static) {
+                return value !== "prototype";
+            }
+
+            return value !== "constructor";
+
+        /* c8 ignore next */
+        default:
+            throw new Error(`Unexpected node type: ${node.type}`);
+    }
+
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow unnecessary computed property keys in objects and classes",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-useless-computed-key"
+        },
+
+        schema: [{
+            type: "object",
+            properties: {
+                enforceForClassMembers: {
+                    type: "boolean",
+                    default: false
+                }
+            },
+            additionalProperties: false
+        }],
+        fixable: "code",
+
+        messages: {
+            unnecessarilyComputedProperty: "Unnecessarily computed property [{{property}}] found."
+        }
+    },
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const enforceForClassMembers = context.options[0] && context.options[0].enforceForClassMembers;
+
+        /**
+         * Reports a given node if it violated this rule.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         */
+        function check(node) {
+            if (hasUselessComputedKey(node)) {
+                const { key } = node;
+
+                context.report({
+                    node,
+                    messageId: "unnecessarilyComputedProperty",
+                    data: { property: sourceCode.getText(key) },
+                    fix(fixer) {
+                        const leftSquareBracket = sourceCode.getTokenBefore(key, astUtils.isOpeningBracketToken);
+                        const rightSquareBracket = sourceCode.getTokenAfter(key, astUtils.isClosingBracketToken);
+
+                        // If there are comments between the brackets and the property name, don't do a fix.
+                        if (sourceCode.commentsExistBetween(leftSquareBracket, rightSquareBracket)) {
+                            return null;
+                        }
+
+                        const tokenBeforeLeftBracket = sourceCode.getTokenBefore(leftSquareBracket);
+
+                        // Insert a space before the key to avoid changing identifiers, e.g. ({ get[2]() {} }) to ({ get2() {} })
+                        const needsSpaceBeforeKey = tokenBeforeLeftBracket.range[1] === leftSquareBracket.range[0] &&
+                            !astUtils.canTokensBeAdjacent(tokenBeforeLeftBracket, sourceCode.getFirstToken(key));
+
+                        const replacementKey = (needsSpaceBeforeKey ? " " : "") + key.raw;
+
+                        return fixer.replaceTextRange([leftSquareBracket.range[0], rightSquareBracket.range[1]], replacementKey);
+                    }
+                });
+            }
+        }
+
+        /**
+         * A no-op function to act as placeholder for checking a node when the `enforceForClassMembers` option is `false`.
+         * @returns {void}
+         * @private
+         */
+        function noop() {}
+
+        return {
+            Property: check,
+            MethodDefinition: enforceForClassMembers ? check : noop,
+            PropertyDefinition: enforceForClassMembers ? check : noop
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-useless-concat.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-useless-concat.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-useless-concat.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,115 @@
+/**
+ * @fileoverview disallow unnecessary concatenation of template strings
+ * @author Henry Zhu
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given node is a concatenation.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} `true` if the node is a concatenation.
+ */
+function isConcatenation(node) {
+    return node.type === "BinaryExpression" && node.operator === "+";
+}
+
+/**
+ * Checks if the given token is a `+` token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is a `+` token.
+ */
+function isConcatOperatorToken(token) {
+    return token.value === "+" && token.type === "Punctuator";
+}
+
+/**
+ * Get's the right most node on the left side of a BinaryExpression with + operator.
+ * @param {ASTNode} node A BinaryExpression node to check.
+ * @returns {ASTNode} node
+ */
+function getLeft(node) {
+    let left = node.left;
+
+    while (isConcatenation(left)) {
+        left = left.right;
+    }
+    return left;
+}
+
+/**
+ * Get's the left most node on the right side of a BinaryExpression with + operator.
+ * @param {ASTNode} node A BinaryExpression node to check.
+ * @returns {ASTNode} node
+ */
+function getRight(node) {
+    let right = node.right;
+
+    while (isConcatenation(right)) {
+        right = right.left;
+    }
+    return right;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow unnecessary concatenation of literals or template literals",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-useless-concat"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpectedConcat: "Unexpected string concatenation of literals."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        return {
+            BinaryExpression(node) {
+
+                // check if not concatenation
+                if (node.operator !== "+") {
+                    return;
+                }
+
+                // account for the `foo + "a" + "b"` case
+                const left = getLeft(node);
+                const right = getRight(node);
+
+                if (astUtils.isStringLiteral(left) &&
+                    astUtils.isStringLiteral(right) &&
+                    astUtils.isTokenOnSameLine(left, right)
+                ) {
+                    const operatorToken = sourceCode.getFirstTokenBetween(left, right, isConcatOperatorToken);
+
+                    context.report({
+                        node,
+                        loc: operatorToken.loc,
+                        messageId: "unexpectedConcat"
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-useless-constructor.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-useless-constructor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-useless-constructor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,189 @@
+/**
+ * @fileoverview Rule to flag the use of redundant constructors in classes.
+ * @author Alberto Rodríguez
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether a given array of statements is a single call of `super`.
+ * @param {ASTNode[]} body An array of statements to check.
+ * @returns {boolean} `true` if the body is a single call of `super`.
+ */
+function isSingleSuperCall(body) {
+    return (
+        body.length === 1 &&
+        body[0].type === "ExpressionStatement" &&
+        body[0].expression.type === "CallExpression" &&
+        body[0].expression.callee.type === "Super"
+    );
+}
+
+/**
+ * Checks whether a given node is a pattern which doesn't have any side effects.
+ * Default parameters and Destructuring parameters can have side effects.
+ * @param {ASTNode} node A pattern node.
+ * @returns {boolean} `true` if the node doesn't have any side effects.
+ */
+function isSimple(node) {
+    return node.type === "Identifier" || node.type === "RestElement";
+}
+
+/**
+ * Checks whether a given array of expressions is `...arguments` or not.
+ * `super(...arguments)` passes all arguments through.
+ * @param {ASTNode[]} superArgs An array of expressions to check.
+ * @returns {boolean} `true` if the superArgs is `...arguments`.
+ */
+function isSpreadArguments(superArgs) {
+    return (
+        superArgs.length === 1 &&
+        superArgs[0].type === "SpreadElement" &&
+        superArgs[0].argument.type === "Identifier" &&
+        superArgs[0].argument.name === "arguments"
+    );
+}
+
+/**
+ * Checks whether given 2 nodes are identifiers which have the same name or not.
+ * @param {ASTNode} ctorParam A node to check.
+ * @param {ASTNode} superArg A node to check.
+ * @returns {boolean} `true` if the nodes are identifiers which have the same
+ *      name.
+ */
+function isValidIdentifierPair(ctorParam, superArg) {
+    return (
+        ctorParam.type === "Identifier" &&
+        superArg.type === "Identifier" &&
+        ctorParam.name === superArg.name
+    );
+}
+
+/**
+ * Checks whether given 2 nodes are a rest/spread pair which has the same values.
+ * @param {ASTNode} ctorParam A node to check.
+ * @param {ASTNode} superArg A node to check.
+ * @returns {boolean} `true` if the nodes are a rest/spread pair which has the
+ *      same values.
+ */
+function isValidRestSpreadPair(ctorParam, superArg) {
+    return (
+        ctorParam.type === "RestElement" &&
+        superArg.type === "SpreadElement" &&
+        isValidIdentifierPair(ctorParam.argument, superArg.argument)
+    );
+}
+
+/**
+ * Checks whether given 2 nodes have the same value or not.
+ * @param {ASTNode} ctorParam A node to check.
+ * @param {ASTNode} superArg A node to check.
+ * @returns {boolean} `true` if the nodes have the same value or not.
+ */
+function isValidPair(ctorParam, superArg) {
+    return (
+        isValidIdentifierPair(ctorParam, superArg) ||
+        isValidRestSpreadPair(ctorParam, superArg)
+    );
+}
+
+/**
+ * Checks whether the parameters of a constructor and the arguments of `super()`
+ * have the same values or not.
+ * @param {ASTNode} ctorParams The parameters of a constructor to check.
+ * @param {ASTNode} superArgs The arguments of `super()` to check.
+ * @returns {boolean} `true` if those have the same values.
+ */
+function isPassingThrough(ctorParams, superArgs) {
+    if (ctorParams.length !== superArgs.length) {
+        return false;
+    }
+
+    for (let i = 0; i < ctorParams.length; ++i) {
+        if (!isValidPair(ctorParams[i], superArgs[i])) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+/**
+ * Checks whether the constructor body is a redundant super call.
+ * @param {Array} body constructor body content.
+ * @param {Array} ctorParams The params to check against super call.
+ * @returns {boolean} true if the constructor body is redundant
+ */
+function isRedundantSuperCall(body, ctorParams) {
+    return (
+        isSingleSuperCall(body) &&
+        ctorParams.every(isSimple) &&
+        (
+            isSpreadArguments(body[0].expression.arguments) ||
+            isPassingThrough(ctorParams, body[0].expression.arguments)
+        )
+    );
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow unnecessary constructors",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-useless-constructor"
+        },
+
+        schema: [],
+
+        messages: {
+            noUselessConstructor: "Useless constructor."
+        }
+    },
+
+    create(context) {
+
+        /**
+         * Checks whether a node is a redundant constructor
+         * @param {ASTNode} node node to check
+         * @returns {void}
+         */
+        function checkForConstructor(node) {
+            if (node.kind !== "constructor") {
+                return;
+            }
+
+            /*
+             * Prevent crashing on parsers which do not require class constructor
+             * to have a body, e.g. typescript and flow
+             */
+            if (!node.value.body) {
+                return;
+            }
+
+            const body = node.value.body.body;
+            const ctorParams = node.value.params;
+            const superClass = node.parent.parent.superClass;
+
+            if (superClass ? isRedundantSuperCall(body, ctorParams) : (body.length === 0)) {
+                context.report({
+                    node,
+                    messageId: "noUselessConstructor"
+                });
+            }
+        }
+
+        return {
+            MethodDefinition: checkForConstructor
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-useless-escape.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-useless-escape.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-useless-escape.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,333 @@
+/**
+ * @fileoverview Look for useless escapes in strings and regexes
+ * @author Onur Temizkan
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+const { RegExpParser, visitRegExpAST } = require("@eslint-community/regexpp");
+
+/**
+ * @typedef {import('@eslint-community/regexpp').AST.CharacterClass} CharacterClass
+ * @typedef {import('@eslint-community/regexpp').AST.ExpressionCharacterClass} ExpressionCharacterClass
+ */
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/**
+ * Returns the union of two sets.
+ * @param {Set} setA The first set
+ * @param {Set} setB The second set
+ * @returns {Set} The union of the two sets
+ */
+function union(setA, setB) {
+    return new Set(function *() {
+        yield* setA;
+        yield* setB;
+    }());
+}
+
+const VALID_STRING_ESCAPES = union(new Set("\\nrvtbfux"), astUtils.LINEBREAKS);
+const REGEX_GENERAL_ESCAPES = new Set("\\bcdDfnpPrsStvwWxu0123456789]");
+const REGEX_NON_CHARCLASS_ESCAPES = union(REGEX_GENERAL_ESCAPES, new Set("^/.$*+?[{}|()Bk"));
+
+/*
+ * Set of characters that require escaping in character classes in `unicodeSets` mode.
+ * ( ) [ ] { } / - \ | are ClassSetSyntaxCharacter
+ */
+const REGEX_CLASSSET_CHARACTER_ESCAPES = union(REGEX_GENERAL_ESCAPES, new Set("q/[{}|()-"));
+
+/*
+ * A single character set of ClassSetReservedDoublePunctuator.
+ * && !! ## $$ %% ** ++ ,, .. :: ;; << == >> ?? @@ ^^ `` ~~ are ClassSetReservedDoublePunctuator
+ */
+const REGEX_CLASS_SET_RESERVED_DOUBLE_PUNCTUATOR = new Set("!#$%&*+,.:;<=>?@^`~");
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow unnecessary escape characters",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-useless-escape"
+        },
+
+        hasSuggestions: true,
+
+        messages: {
+            unnecessaryEscape: "Unnecessary escape character: \\{{character}}.",
+            removeEscape: "Remove the `\\`. This maintains the current functionality.",
+            removeEscapeDoNotKeepSemantics: "Remove the `\\` if it was inserted by mistake.",
+            escapeBackslash: "Replace the `\\` with `\\\\` to include the actual backslash character."
+        },
+
+        schema: []
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const parser = new RegExpParser();
+
+        /**
+         * Reports a node
+         * @param {ASTNode} node The node to report
+         * @param {number} startOffset The backslash's offset from the start of the node
+         * @param {string} character The uselessly escaped character (not including the backslash)
+         * @param {boolean} [disableEscapeBackslashSuggest] `true` if escapeBackslash suggestion should be turned off.
+         * @returns {void}
+         */
+        function report(node, startOffset, character, disableEscapeBackslashSuggest) {
+            const rangeStart = node.range[0] + startOffset;
+            const range = [rangeStart, rangeStart + 1];
+            const start = sourceCode.getLocFromIndex(rangeStart);
+
+            context.report({
+                node,
+                loc: {
+                    start,
+                    end: { line: start.line, column: start.column + 1 }
+                },
+                messageId: "unnecessaryEscape",
+                data: { character },
+                suggest: [
+                    {
+
+                        // Removing unnecessary `\` characters in a directive is not guaranteed to maintain functionality.
+                        messageId: astUtils.isDirective(node.parent)
+                            ? "removeEscapeDoNotKeepSemantics" : "removeEscape",
+                        fix(fixer) {
+                            return fixer.removeRange(range);
+                        }
+                    },
+                    ...disableEscapeBackslashSuggest
+                        ? []
+                        : [
+                            {
+                                messageId: "escapeBackslash",
+                                fix(fixer) {
+                                    return fixer.insertTextBeforeRange(range, "\\");
+                                }
+                            }
+                        ]
+                ]
+            });
+        }
+
+        /**
+         * Checks if the escape character in given string slice is unnecessary.
+         * @private
+         * @param {ASTNode} node node to validate.
+         * @param {string} match string slice to validate.
+         * @returns {void}
+         */
+        function validateString(node, match) {
+            const isTemplateElement = node.type === "TemplateElement";
+            const escapedChar = match[0][1];
+            let isUnnecessaryEscape = !VALID_STRING_ESCAPES.has(escapedChar);
+            let isQuoteEscape;
+
+            if (isTemplateElement) {
+                isQuoteEscape = escapedChar === "`";
+
+                if (escapedChar === "$") {
+
+                    // Warn if `\$` is not followed by `{`
+                    isUnnecessaryEscape = match.input[match.index + 2] !== "{";
+                } else if (escapedChar === "{") {
+
+                    /*
+                     * Warn if `\{` is not preceded by `$`. If preceded by `$`, escaping
+                     * is necessary and the rule should not warn. If preceded by `/$`, the rule
+                     * will warn for the `/$` instead, as it is the first unnecessarily escaped character.
+                     */
+                    isUnnecessaryEscape = match.input[match.index - 1] !== "$";
+                }
+            } else {
+                isQuoteEscape = escapedChar === node.raw[0];
+            }
+
+            if (isUnnecessaryEscape && !isQuoteEscape) {
+                report(node, match.index, match[0].slice(1));
+            }
+        }
+
+        /**
+         * Checks if the escape character in given regexp is unnecessary.
+         * @private
+         * @param {ASTNode} node node to validate.
+         * @returns {void}
+         */
+        function validateRegExp(node) {
+            const { pattern, flags } = node.regex;
+            let patternNode;
+            const unicode = flags.includes("u");
+            const unicodeSets = flags.includes("v");
+
+            try {
+                patternNode = parser.parsePattern(pattern, 0, pattern.length, { unicode, unicodeSets });
+            } catch {
+
+                // Ignore regular expressions with syntax errors
+                return;
+            }
+
+            /** @type {(CharacterClass | ExpressionCharacterClass)[]} */
+            const characterClassStack = [];
+
+            visitRegExpAST(patternNode, {
+                onCharacterClassEnter: characterClassNode => characterClassStack.unshift(characterClassNode),
+                onCharacterClassLeave: () => characterClassStack.shift(),
+                onExpressionCharacterClassEnter: characterClassNode => characterClassStack.unshift(characterClassNode),
+                onExpressionCharacterClassLeave: () => characterClassStack.shift(),
+                onCharacterEnter(characterNode) {
+                    if (!characterNode.raw.startsWith("\\")) {
+
+                        // It's not an escaped character.
+                        return;
+                    }
+
+                    const escapedChar = characterNode.raw.slice(1);
+
+                    if (escapedChar !== String.fromCodePoint(characterNode.value)) {
+
+                        // It's a valid escape.
+                        return;
+                    }
+                    let allowedEscapes;
+
+                    if (characterClassStack.length) {
+                        allowedEscapes = unicodeSets ? REGEX_CLASSSET_CHARACTER_ESCAPES : REGEX_GENERAL_ESCAPES;
+                    } else {
+                        allowedEscapes = REGEX_NON_CHARCLASS_ESCAPES;
+                    }
+                    if (allowedEscapes.has(escapedChar)) {
+                        return;
+                    }
+
+                    const reportedIndex = characterNode.start + 1;
+                    let disableEscapeBackslashSuggest = false;
+
+                    if (characterClassStack.length) {
+                        const characterClassNode = characterClassStack[0];
+
+                        if (escapedChar === "^") {
+
+                            /*
+                             * The '^' character is also a special case; it must always be escaped outside of character classes, but
+                             * it only needs to be escaped in character classes if it's at the beginning of the character class. To
+                             * account for this, consider it to be a valid escape character outside of character classes, and filter
+                             * out '^' characters that appear at the start of a character class.
+                             */
+                            if (characterClassNode.start + 1 === characterNode.start) {
+
+                                return;
+                            }
+                        }
+                        if (!unicodeSets) {
+                            if (escapedChar === "-") {
+
+                                /*
+                                 * The '-' character is a special case, because it's only valid to escape it if it's in a character
+                                 * class, and is not at either edge of the character class. To account for this, don't consider '-'
+                                 * characters to be valid in general, and filter out '-' characters that appear in the middle of a
+                                 * character class.
+                                 */
+                                if (characterClassNode.start + 1 !== characterNode.start && characterNode.end !== characterClassNode.end - 1) {
+
+                                    return;
+                                }
+                            }
+                        } else { // unicodeSets mode
+                            if (REGEX_CLASS_SET_RESERVED_DOUBLE_PUNCTUATOR.has(escapedChar)) {
+
+                                // Escaping is valid if it is a ClassSetReservedDoublePunctuator.
+                                if (pattern[characterNode.end] === escapedChar) {
+                                    return;
+                                }
+                                if (pattern[characterNode.start - 1] === escapedChar) {
+                                    if (escapedChar !== "^") {
+                                        return;
+                                    }
+
+                                    // If the previous character is a `negate` caret(`^`), escape to caret is unnecessary.
+
+                                    if (!characterClassNode.negate) {
+                                        return;
+                                    }
+                                    const negateCaretIndex = characterClassNode.start + 1;
+
+                                    if (negateCaretIndex < characterNode.start - 1) {
+                                        return;
+                                    }
+                                }
+                            }
+
+                            if (characterNode.parent.type === "ClassIntersection" || characterNode.parent.type === "ClassSubtraction") {
+                                disableEscapeBackslashSuggest = true;
+                            }
+                        }
+                    }
+
+                    report(
+                        node,
+                        reportedIndex,
+                        escapedChar,
+                        disableEscapeBackslashSuggest
+                    );
+                }
+            });
+        }
+
+        /**
+         * Checks if a node has an escape.
+         * @param {ASTNode} node node to check.
+         * @returns {void}
+         */
+        function check(node) {
+            const isTemplateElement = node.type === "TemplateElement";
+
+            if (
+                isTemplateElement &&
+                node.parent &&
+                node.parent.parent &&
+                node.parent.parent.type === "TaggedTemplateExpression" &&
+                node.parent === node.parent.parent.quasi
+            ) {
+
+                // Don't report tagged template literals, because the backslash character is accessible to the tag function.
+                return;
+            }
+
+            if (typeof node.value === "string" || isTemplateElement) {
+
+                /*
+                 * JSXAttribute doesn't have any escape sequence: https://facebook.github.io/jsx/.
+                 * In addition, backticks are not supported by JSX yet: https://github.com/facebook/jsx/issues/25.
+                 */
+                if (node.parent.type === "JSXAttribute" || node.parent.type === "JSXElement" || node.parent.type === "JSXFragment") {
+                    return;
+                }
+
+                const value = isTemplateElement ? sourceCode.getText(node) : node.raw;
+                const pattern = /\\[^\d]/gu;
+                let match;
+
+                while ((match = pattern.exec(value))) {
+                    validateString(node, match);
+                }
+            } else if (node.regex) {
+                validateRegExp(node);
+            }
+
+        }
+
+        return {
+            Literal: check,
+            TemplateElement: check
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-useless-rename.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-useless-rename.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-useless-rename.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,172 @@
+/**
+ * @fileoverview Disallow renaming import, export, and destructured assignments to the same name.
+ * @author Kai Cataldo
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow renaming import, export, and destructured assignments to the same name",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-useless-rename"
+        },
+
+        fixable: "code",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    ignoreDestructuring: { type: "boolean", default: false },
+                    ignoreImport: { type: "boolean", default: false },
+                    ignoreExport: { type: "boolean", default: false }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unnecessarilyRenamed: "{{type}} {{name}} unnecessarily renamed."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode,
+            options = context.options[0] || {},
+            ignoreDestructuring = options.ignoreDestructuring === true,
+            ignoreImport = options.ignoreImport === true,
+            ignoreExport = options.ignoreExport === true;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Reports error for unnecessarily renamed assignments
+         * @param {ASTNode} node node to report
+         * @param {ASTNode} initial node with initial name value
+         * @param {string} type the type of the offending node
+         * @returns {void}
+         */
+        function reportError(node, initial, type) {
+            const name = initial.type === "Identifier" ? initial.name : initial.value;
+
+            return context.report({
+                node,
+                messageId: "unnecessarilyRenamed",
+                data: {
+                    name,
+                    type
+                },
+                fix(fixer) {
+                    const replacementNode = node.type === "Property" ? node.value : node.local;
+
+                    if (sourceCode.getCommentsInside(node).length > sourceCode.getCommentsInside(replacementNode).length) {
+                        return null;
+                    }
+
+                    // Don't autofix code such as `({foo: (foo) = a} = obj);`, parens are not allowed in shorthand properties.
+                    if (
+                        replacementNode.type === "AssignmentPattern" &&
+                        astUtils.isParenthesised(sourceCode, replacementNode.left)
+                    ) {
+                        return null;
+                    }
+
+                    return fixer.replaceText(node, sourceCode.getText(replacementNode));
+                }
+            });
+        }
+
+        /**
+         * Checks whether a destructured assignment is unnecessarily renamed
+         * @param {ASTNode} node node to check
+         * @returns {void}
+         */
+        function checkDestructured(node) {
+            if (ignoreDestructuring) {
+                return;
+            }
+
+            for (const property of node.properties) {
+
+                /**
+                 * Properties using shorthand syntax and rest elements can not be renamed.
+                 * If the property is computed, we have no idea if a rename is useless or not.
+                 */
+                if (property.type !== "Property" || property.shorthand || property.computed) {
+                    continue;
+                }
+
+                const key = (property.key.type === "Identifier" && property.key.name) || (property.key.type === "Literal" && property.key.value);
+                const renamedKey = property.value.type === "AssignmentPattern" ? property.value.left.name : property.value.name;
+
+                if (key === renamedKey) {
+                    reportError(property, property.key, "Destructuring assignment");
+                }
+            }
+        }
+
+        /**
+         * Checks whether an import is unnecessarily renamed
+         * @param {ASTNode} node node to check
+         * @returns {void}
+         */
+        function checkImport(node) {
+            if (ignoreImport) {
+                return;
+            }
+
+            if (
+                node.imported.range[0] !== node.local.range[0] &&
+                astUtils.getModuleExportName(node.imported) === node.local.name
+            ) {
+                reportError(node, node.imported, "Import");
+            }
+        }
+
+        /**
+         * Checks whether an export is unnecessarily renamed
+         * @param {ASTNode} node node to check
+         * @returns {void}
+         */
+        function checkExport(node) {
+            if (ignoreExport) {
+                return;
+            }
+
+            if (
+                node.local.range[0] !== node.exported.range[0] &&
+                astUtils.getModuleExportName(node.local) === astUtils.getModuleExportName(node.exported)
+            ) {
+                reportError(node, node.local, "Export");
+            }
+
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            ObjectPattern: checkDestructured,
+            ImportSpecifier: checkImport,
+            ExportSpecifier: checkExport
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-useless-return.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-useless-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-useless-return.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,364 @@
+/**
+ * @fileoverview Disallow redundant return statements
+ * @author Teddy Katz
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils"),
+    FixTracker = require("./utils/fix-tracker");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Removes the given element from the array.
+ * @param {Array} array The source array to remove.
+ * @param {any} element The target item to remove.
+ * @returns {void}
+ */
+function remove(array, element) {
+    const index = array.indexOf(element);
+
+    if (index !== -1) {
+        array.splice(index, 1);
+    }
+}
+
+/**
+ * Checks whether it can remove the given return statement or not.
+ * @param {ASTNode} node The return statement node to check.
+ * @returns {boolean} `true` if the node is removable.
+ */
+function isRemovable(node) {
+    return astUtils.STATEMENT_LIST_PARENTS.has(node.parent.type);
+}
+
+/**
+ * Checks whether the given return statement is in a `finally` block or not.
+ * @param {ASTNode} node The return statement node to check.
+ * @returns {boolean} `true` if the node is in a `finally` block.
+ */
+function isInFinally(node) {
+    for (
+        let currentNode = node;
+        currentNode && currentNode.parent && !astUtils.isFunction(currentNode);
+        currentNode = currentNode.parent
+    ) {
+        if (currentNode.parent.type === "TryStatement" && currentNode.parent.finalizer === currentNode) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+/**
+ * Checks all segments in a set and returns true if any are reachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if any segment is reachable; false otherwise.
+ */
+function isAnySegmentReachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow redundant return statements",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-useless-return"
+        },
+
+        fixable: "code",
+        schema: [],
+
+        messages: {
+            unnecessaryReturn: "Unnecessary return statement."
+        }
+    },
+
+    create(context) {
+        const segmentInfoMap = new WeakMap();
+        const sourceCode = context.sourceCode;
+        let scopeInfo = null;
+
+        /**
+         * Checks whether the given segment is terminated by a return statement or not.
+         * @param {CodePathSegment} segment The segment to check.
+         * @returns {boolean} `true` if the segment is terminated by a return statement, or if it's still a part of unreachable.
+         */
+        function isReturned(segment) {
+            const info = segmentInfoMap.get(segment);
+
+            return !info || info.returned;
+        }
+
+        /**
+         * Collects useless return statements from the given previous segments.
+         *
+         * A previous segment may be an unreachable segment.
+         * In that case, the information object of the unreachable segment is not
+         * initialized because `onCodePathSegmentStart` event is not notified for
+         * unreachable segments.
+         * This goes to the previous segments of the unreachable segment recursively
+         * if the unreachable segment was generated by a return statement. Otherwise,
+         * this ignores the unreachable segment.
+         *
+         * This behavior would simulate code paths for the case that the return
+         * statement does not exist.
+         * @param {ASTNode[]} uselessReturns The collected return statements.
+         * @param {CodePathSegment[]} prevSegments The previous segments to traverse.
+         * @param {WeakSet<CodePathSegment>} [providedTraversedSegments] A set of segments that have already been traversed in this call
+         * @returns {ASTNode[]} `uselessReturns`.
+         */
+        function getUselessReturns(uselessReturns, prevSegments, providedTraversedSegments) {
+            const traversedSegments = providedTraversedSegments || new WeakSet();
+
+            for (const segment of prevSegments) {
+                if (!segment.reachable) {
+                    if (!traversedSegments.has(segment)) {
+                        traversedSegments.add(segment);
+                        getUselessReturns(
+                            uselessReturns,
+                            segment.allPrevSegments.filter(isReturned),
+                            traversedSegments
+                        );
+                    }
+                    continue;
+                }
+
+                uselessReturns.push(...segmentInfoMap.get(segment).uselessReturns);
+            }
+
+            return uselessReturns;
+        }
+
+        /**
+         * Removes the return statements on the given segment from the useless return
+         * statement list.
+         *
+         * This segment may be an unreachable segment.
+         * In that case, the information object of the unreachable segment is not
+         * initialized because `onCodePathSegmentStart` event is not notified for
+         * unreachable segments.
+         * This goes to the previous segments of the unreachable segment recursively
+         * if the unreachable segment was generated by a return statement. Otherwise,
+         * this ignores the unreachable segment.
+         *
+         * This behavior would simulate code paths for the case that the return
+         * statement does not exist.
+         * @param {CodePathSegment} segment The segment to get return statements.
+         * @param {Set<CodePathSegment>} usedUnreachableSegments A set of segments that have already been traversed in this call.
+         * @returns {void}
+         */
+        function markReturnStatementsOnSegmentAsUsed(segment, usedUnreachableSegments) {
+            if (!segment.reachable) {
+                usedUnreachableSegments.add(segment);
+                segment.allPrevSegments
+                    .filter(isReturned)
+                    .filter(prevSegment => !usedUnreachableSegments.has(prevSegment))
+                    .forEach(prevSegment => markReturnStatementsOnSegmentAsUsed(prevSegment, usedUnreachableSegments));
+                return;
+            }
+
+            const info = segmentInfoMap.get(segment);
+
+            info.uselessReturns = info.uselessReturns.filter(node => {
+                if (scopeInfo.traversedTryBlockStatements && scopeInfo.traversedTryBlockStatements.length > 0) {
+                    const returnInitialRange = node.range[0];
+                    const returnFinalRange = node.range[1];
+
+                    const areBlocksInRange = scopeInfo.traversedTryBlockStatements.some(tryBlockStatement => {
+                        const blockInitialRange = tryBlockStatement.range[0];
+                        const blockFinalRange = tryBlockStatement.range[1];
+
+                        return (
+                            returnInitialRange >= blockInitialRange &&
+                            returnFinalRange <= blockFinalRange
+                        );
+                    });
+
+                    if (areBlocksInRange) {
+                        return true;
+                    }
+                }
+
+                remove(scopeInfo.uselessReturns, node);
+                return false;
+            });
+        }
+
+        /**
+         * Removes the return statements on the current segments from the useless
+         * return statement list.
+         *
+         * This function will be called at every statement except FunctionDeclaration,
+         * BlockStatement, and BreakStatement.
+         *
+         * - FunctionDeclarations are always executed whether it's returned or not.
+         * - BlockStatements do nothing.
+         * - BreakStatements go the next merely.
+         * @returns {void}
+         */
+        function markReturnStatementsOnCurrentSegmentsAsUsed() {
+            scopeInfo
+                .currentSegments
+                .forEach(segment => markReturnStatementsOnSegmentAsUsed(segment, new Set()));
+        }
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+
+            // Makes and pushes a new scope information.
+            onCodePathStart(codePath) {
+                scopeInfo = {
+                    upper: scopeInfo,
+                    uselessReturns: [],
+                    traversedTryBlockStatements: [],
+                    codePath,
+                    currentSegments: new Set()
+                };
+            },
+
+            // Reports useless return statements if exist.
+            onCodePathEnd() {
+                for (const node of scopeInfo.uselessReturns) {
+                    context.report({
+                        node,
+                        loc: node.loc,
+                        messageId: "unnecessaryReturn",
+                        fix(fixer) {
+                            if (isRemovable(node) && !sourceCode.getCommentsInside(node).length) {
+
+                                /*
+                                 * Extend the replacement range to include the
+                                 * entire function to avoid conflicting with
+                                 * no-else-return.
+                                 * https://github.com/eslint/eslint/issues/8026
+                                 */
+                                return new FixTracker(fixer, sourceCode)
+                                    .retainEnclosingFunction(node)
+                                    .remove(node);
+                            }
+                            return null;
+                        }
+                    });
+                }
+
+                scopeInfo = scopeInfo.upper;
+            },
+
+            /*
+             * Initializes segments.
+             * NOTE: This event is notified for only reachable segments.
+             */
+            onCodePathSegmentStart(segment) {
+
+                scopeInfo.currentSegments.add(segment);
+
+                const info = {
+                    uselessReturns: getUselessReturns([], segment.allPrevSegments),
+                    returned: false
+                };
+
+                // Stores the info.
+                segmentInfoMap.set(segment, info);
+            },
+
+            onUnreachableCodePathSegmentStart(segment) {
+                scopeInfo.currentSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                scopeInfo.currentSegments.delete(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                scopeInfo.currentSegments.delete(segment);
+            },
+
+            // Adds ReturnStatement node to check whether it's useless or not.
+            ReturnStatement(node) {
+                if (node.argument) {
+                    markReturnStatementsOnCurrentSegmentsAsUsed();
+                }
+                if (
+                    node.argument ||
+                    astUtils.isInLoop(node) ||
+                    isInFinally(node) ||
+
+                    // Ignore `return` statements in unreachable places (https://github.com/eslint/eslint/issues/11647).
+                    !isAnySegmentReachable(scopeInfo.currentSegments)
+                ) {
+                    return;
+                }
+
+                for (const segment of scopeInfo.currentSegments) {
+                    const info = segmentInfoMap.get(segment);
+
+                    if (info) {
+                        info.uselessReturns.push(node);
+                        info.returned = true;
+                    }
+                }
+                scopeInfo.uselessReturns.push(node);
+            },
+
+            "TryStatement > BlockStatement.block:exit"(node) {
+                scopeInfo.traversedTryBlockStatements.push(node);
+            },
+
+            "TryStatement:exit"() {
+                scopeInfo.traversedTryBlockStatements.pop();
+            },
+
+            /*
+             * Registers for all statement nodes except FunctionDeclaration, BlockStatement, BreakStatement.
+             * Removes return statements of the current segments from the useless return statement list.
+             */
+            ClassDeclaration: markReturnStatementsOnCurrentSegmentsAsUsed,
+            ContinueStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            DebuggerStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            DoWhileStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            EmptyStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            ExpressionStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            ForInStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            ForOfStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            ForStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            IfStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            ImportDeclaration: markReturnStatementsOnCurrentSegmentsAsUsed,
+            LabeledStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            SwitchStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            ThrowStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            TryStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            VariableDeclaration: markReturnStatementsOnCurrentSegmentsAsUsed,
+            WhileStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            WithStatement: markReturnStatementsOnCurrentSegmentsAsUsed,
+            ExportNamedDeclaration: markReturnStatementsOnCurrentSegmentsAsUsed,
+            ExportDefaultDeclaration: markReturnStatementsOnCurrentSegmentsAsUsed,
+            ExportAllDeclaration: markReturnStatementsOnCurrentSegmentsAsUsed
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-var.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-var.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-var.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,334 @@
+/**
+ * @fileoverview Rule to check for the usage of var.
+ * @author Jamund Ferguson
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Check whether a given variable is a global variable or not.
+ * @param {eslint-scope.Variable} variable The variable to check.
+ * @returns {boolean} `true` if the variable is a global variable.
+ */
+function isGlobal(variable) {
+    return Boolean(variable.scope) && variable.scope.type === "global";
+}
+
+/**
+ * Finds the nearest function scope or global scope walking up the scope
+ * hierarchy.
+ * @param {eslint-scope.Scope} scope The scope to traverse.
+ * @returns {eslint-scope.Scope} a function scope or global scope containing the given
+ *      scope.
+ */
+function getEnclosingFunctionScope(scope) {
+    let currentScope = scope;
+
+    while (currentScope.type !== "function" && currentScope.type !== "global") {
+        currentScope = currentScope.upper;
+    }
+    return currentScope;
+}
+
+/**
+ * Checks whether the given variable has any references from a more specific
+ * function expression (i.e. a closure).
+ * @param {eslint-scope.Variable} variable A variable to check.
+ * @returns {boolean} `true` if the variable is used from a closure.
+ */
+function isReferencedInClosure(variable) {
+    const enclosingFunctionScope = getEnclosingFunctionScope(variable.scope);
+
+    return variable.references.some(reference =>
+        getEnclosingFunctionScope(reference.from) !== enclosingFunctionScope);
+}
+
+/**
+ * Checks whether the given node is the assignee of a loop.
+ * @param {ASTNode} node A VariableDeclaration node to check.
+ * @returns {boolean} `true` if the declaration is assigned as part of loop
+ *      iteration.
+ */
+function isLoopAssignee(node) {
+    return (node.parent.type === "ForOfStatement" || node.parent.type === "ForInStatement") &&
+        node === node.parent.left;
+}
+
+/**
+ * Checks whether the given variable declaration is immediately initialized.
+ * @param {ASTNode} node A VariableDeclaration node to check.
+ * @returns {boolean} `true` if the declaration has an initializer.
+ */
+function isDeclarationInitialized(node) {
+    return node.declarations.every(declarator => declarator.init !== null);
+}
+
+const SCOPE_NODE_TYPE = /^(?:Program|BlockStatement|SwitchStatement|ForStatement|ForInStatement|ForOfStatement)$/u;
+
+/**
+ * Gets the scope node which directly contains a given node.
+ * @param {ASTNode} node A node to get. This is a `VariableDeclaration` or
+ *      an `Identifier`.
+ * @returns {ASTNode} A scope node. This is one of `Program`, `BlockStatement`,
+ *      `SwitchStatement`, `ForStatement`, `ForInStatement`, and
+ *      `ForOfStatement`.
+ */
+function getScopeNode(node) {
+    for (let currentNode = node; currentNode; currentNode = currentNode.parent) {
+        if (SCOPE_NODE_TYPE.test(currentNode.type)) {
+            return currentNode;
+        }
+    }
+
+    /* c8 ignore next */
+    return null;
+}
+
+/**
+ * Checks whether a given variable is redeclared or not.
+ * @param {eslint-scope.Variable} variable A variable to check.
+ * @returns {boolean} `true` if the variable is redeclared.
+ */
+function isRedeclared(variable) {
+    return variable.defs.length >= 2;
+}
+
+/**
+ * Checks whether a given variable is used from outside of the specified scope.
+ * @param {ASTNode} scopeNode A scope node to check.
+ * @returns {Function} The predicate function which checks whether a given
+ *      variable is used from outside of the specified scope.
+ */
+function isUsedFromOutsideOf(scopeNode) {
+
+    /**
+     * Checks whether a given reference is inside of the specified scope or not.
+     * @param {eslint-scope.Reference} reference A reference to check.
+     * @returns {boolean} `true` if the reference is inside of the specified
+     *      scope.
+     */
+    function isOutsideOfScope(reference) {
+        const scope = scopeNode.range;
+        const id = reference.identifier.range;
+
+        return id[0] < scope[0] || id[1] > scope[1];
+    }
+
+    return function(variable) {
+        return variable.references.some(isOutsideOfScope);
+    };
+}
+
+/**
+ * Creates the predicate function which checks whether a variable has their references in TDZ.
+ *
+ * The predicate function would return `true`:
+ *
+ * - if a reference is before the declarator. E.g. (var a = b, b = 1;)(var {a = b, b} = {};)
+ * - if a reference is in the expression of their default value.  E.g. (var {a = a} = {};)
+ * - if a reference is in the expression of their initializer.  E.g. (var a = a;)
+ * @param {ASTNode} node The initializer node of VariableDeclarator.
+ * @returns {Function} The predicate function.
+ * @private
+ */
+function hasReferenceInTDZ(node) {
+    const initStart = node.range[0];
+    const initEnd = node.range[1];
+
+    return variable => {
+        const id = variable.defs[0].name;
+        const idStart = id.range[0];
+        const defaultValue = (id.parent.type === "AssignmentPattern" ? id.parent.right : null);
+        const defaultStart = defaultValue && defaultValue.range[0];
+        const defaultEnd = defaultValue && defaultValue.range[1];
+
+        return variable.references.some(reference => {
+            const start = reference.identifier.range[0];
+            const end = reference.identifier.range[1];
+
+            return !reference.init && (
+                start < idStart ||
+                (defaultValue !== null && start >= defaultStart && end <= defaultEnd) ||
+                (!astUtils.isFunction(node) && start >= initStart && end <= initEnd)
+            );
+        });
+    };
+}
+
+/**
+ * Checks whether a given variable has name that is allowed for 'var' declarations,
+ * but disallowed for `let` declarations.
+ * @param {eslint-scope.Variable} variable The variable to check.
+ * @returns {boolean} `true` if the variable has a disallowed name.
+ */
+function hasNameDisallowedForLetDeclarations(variable) {
+    return variable.name === "let";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require `let` or `const` instead of `var`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-var"
+        },
+
+        schema: [],
+        fixable: "code",
+
+        messages: {
+            unexpectedVar: "Unexpected var, use let or const instead."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Checks whether the variables which are defined by the given declarator node have their references in TDZ.
+         * @param {ASTNode} declarator The VariableDeclarator node to check.
+         * @returns {boolean} `true` if one of the variables which are defined by the given declarator node have their references in TDZ.
+         */
+        function hasSelfReferenceInTDZ(declarator) {
+            if (!declarator.init) {
+                return false;
+            }
+            const variables = sourceCode.getDeclaredVariables(declarator);
+
+            return variables.some(hasReferenceInTDZ(declarator.init));
+        }
+
+        /**
+         * Checks whether it can fix a given variable declaration or not.
+         * It cannot fix if the following cases:
+         *
+         * - A variable is a global variable.
+         * - A variable is declared on a SwitchCase node.
+         * - A variable is redeclared.
+         * - A variable is used from outside the scope.
+         * - A variable is used from a closure within a loop.
+         * - A variable might be used before it is assigned within a loop.
+         * - A variable might be used in TDZ.
+         * - A variable is declared in statement position (e.g. a single-line `IfStatement`)
+         * - A variable has name that is disallowed for `let` declarations.
+         *
+         * ## A variable is declared on a SwitchCase node.
+         *
+         * If this rule modifies 'var' declarations on a SwitchCase node, it
+         * would generate the warnings of 'no-case-declarations' rule. And the
+         * 'eslint:recommended' preset includes 'no-case-declarations' rule, so
+         * this rule doesn't modify those declarations.
+         *
+         * ## A variable is redeclared.
+         *
+         * The language spec disallows redeclarations of `let` declarations.
+         * Those variables would cause syntax errors.
+         *
+         * ## A variable is used from outside the scope.
+         *
+         * The language spec disallows accesses from outside of the scope for
+         * `let` declarations. Those variables would cause reference errors.
+         *
+         * ## A variable is used from a closure within a loop.
+         *
+         * A `var` declaration within a loop shares the same variable instance
+         * across all loop iterations, while a `let` declaration creates a new
+         * instance for each iteration. This means if a variable in a loop is
+         * referenced by any closure, changing it from `var` to `let` would
+         * change the behavior in a way that is generally unsafe.
+         *
+         * ## A variable might be used before it is assigned within a loop.
+         *
+         * Within a loop, a `let` declaration without an initializer will be
+         * initialized to null, while a `var` declaration will retain its value
+         * from the previous iteration, so it is only safe to change `var` to
+         * `let` if we can statically determine that the variable is always
+         * assigned a value before its first access in the loop body. To keep
+         * the implementation simple, we only convert `var` to `let` within
+         * loops when the variable is a loop assignee or the declaration has an
+         * initializer.
+         * @param {ASTNode} node A variable declaration node to check.
+         * @returns {boolean} `true` if it can fix the node.
+         */
+        function canFix(node) {
+            const variables = sourceCode.getDeclaredVariables(node);
+            const scopeNode = getScopeNode(node);
+
+            if (node.parent.type === "SwitchCase" ||
+                node.declarations.some(hasSelfReferenceInTDZ) ||
+                variables.some(isGlobal) ||
+                variables.some(isRedeclared) ||
+                variables.some(isUsedFromOutsideOf(scopeNode)) ||
+                variables.some(hasNameDisallowedForLetDeclarations)
+            ) {
+                return false;
+            }
+
+            if (astUtils.isInLoop(node)) {
+                if (variables.some(isReferencedInClosure)) {
+                    return false;
+                }
+                if (!isLoopAssignee(node) && !isDeclarationInitialized(node)) {
+                    return false;
+                }
+            }
+
+            if (
+                !isLoopAssignee(node) &&
+                !(node.parent.type === "ForStatement" && node.parent.init === node) &&
+                !astUtils.STATEMENT_LIST_PARENTS.has(node.parent.type)
+            ) {
+
+                // If the declaration is not in a block, e.g. `if (foo) var bar = 1;`, then it can't be fixed.
+                return false;
+            }
+
+            return true;
+        }
+
+        /**
+         * Reports a given variable declaration node.
+         * @param {ASTNode} node A variable declaration node to report.
+         * @returns {void}
+         */
+        function report(node) {
+            context.report({
+                node,
+                messageId: "unexpectedVar",
+
+                fix(fixer) {
+                    const varToken = sourceCode.getFirstToken(node, { filter: t => t.value === "var" });
+
+                    return canFix(node)
+                        ? fixer.replaceText(varToken, "let")
+                        : null;
+                }
+            });
+        }
+
+        return {
+            "VariableDeclaration:exit"(node) {
+                if (node.kind === "var") {
+                    report(node);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-void.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-void.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-void.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,64 @@
+/**
+ * @fileoverview Rule to disallow use of void operator.
+ * @author Mike Sidorov
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `void` operators",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-void"
+        },
+
+        messages: {
+            noVoid: "Expected 'undefined' and instead saw 'void'."
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowAsStatement: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ]
+    },
+
+    create(context) {
+        const allowAsStatement =
+            context.options[0] && context.options[0].allowAsStatement;
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            'UnaryExpression[operator="void"]'(node) {
+                if (
+                    allowAsStatement &&
+                    node.parent &&
+                    node.parent.type === "ExpressionStatement"
+                ) {
+                    return;
+                }
+                context.report({
+                    node,
+                    messageId: "noVoid"
+                });
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-warning-comments.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-warning-comments.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-warning-comments.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,201 @@
+/**
+ * @fileoverview Rule that warns about used warning comments
+ * @author Alexander Schmidt <https://github.com/lxanders>
+ */
+
+"use strict";
+
+const escapeRegExp = require("escape-string-regexp");
+const astUtils = require("./utils/ast-utils");
+
+const CHAR_LIMIT = 40;
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow specified warning terms in comments",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-warning-comments"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    terms: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        }
+                    },
+                    location: {
+                        enum: ["start", "anywhere"]
+                    },
+                    decoration: {
+                        type: "array",
+                        items: {
+                            type: "string",
+                            pattern: "^\\S$"
+                        },
+                        minItems: 1,
+                        uniqueItems: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedComment: "Unexpected '{{matchedTerm}}' comment: '{{comment}}'."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode,
+            configuration = context.options[0] || {},
+            warningTerms = configuration.terms || ["todo", "fixme", "xxx"],
+            location = configuration.location || "start",
+            decoration = [...configuration.decoration || []].join(""),
+            selfConfigRegEx = /\bno-warning-comments\b/u;
+
+        /**
+         * Convert a warning term into a RegExp which will match a comment containing that whole word in the specified
+         * location ("start" or "anywhere"). If the term starts or ends with non word characters, then the match will not
+         * require word boundaries on that side.
+         * @param {string} term A term to convert to a RegExp
+         * @returns {RegExp} The term converted to a RegExp
+         */
+        function convertToRegExp(term) {
+            const escaped = escapeRegExp(term);
+            const escapedDecoration = escapeRegExp(decoration);
+
+            /*
+             * When matching at the start, ignore leading whitespace, and
+             * there's no need to worry about word boundaries.
+             *
+             * These expressions for the prefix and suffix are designed as follows:
+             * ^   handles any terms at the beginning of a comment.
+             *     e.g. terms ["TODO"] matches `//TODO something`
+             * $   handles any terms at the end of a comment
+             *     e.g. terms ["TODO"] matches `// something TODO`
+             * \b  handles terms preceded/followed by word boundary
+             *     e.g. terms: ["!FIX", "FIX!"] matches `// FIX!something` or `// something!FIX`
+             *          terms: ["FIX"] matches `// FIX!` or `// !FIX`, but not `// fixed or affix`
+             *
+             * For location start:
+             * [\s]* handles optional leading spaces
+             *     e.g. terms ["TODO"] matches `//    TODO something`
+             * [\s\*]* (where "\*" is the escaped string of decoration)
+             *     handles optional leading spaces or decoration characters (for "start" location only)
+             *     e.g. terms ["TODO"] matches `/**** TODO something ... `
+             */
+            const wordBoundary = "\\b";
+
+            let prefix = "";
+
+            if (location === "start") {
+                prefix = `^[\\s${escapedDecoration}]*`;
+            } else if (/^\w/u.test(term)) {
+                prefix = wordBoundary;
+            }
+
+            const suffix = /\w$/u.test(term) ? wordBoundary : "";
+            const flags = "iu"; // Case-insensitive with Unicode case folding.
+
+            /*
+             * For location "start", the typical regex is:
+             *   /^[\s]*ESCAPED_TERM\b/iu.
+             * Or if decoration characters are specified (e.g. "*"), then any of
+             * those characters may appear in any order at the start:
+             *   /^[\s\*]*ESCAPED_TERM\b/iu.
+             *
+             * For location "anywhere" the typical regex is
+             *   /\bESCAPED_TERM\b/iu
+             *
+             * If it starts or ends with non-word character, the prefix and suffix are empty, respectively.
+             */
+            return new RegExp(`${prefix}${escaped}${suffix}`, flags);
+        }
+
+        const warningRegExps = warningTerms.map(convertToRegExp);
+
+        /**
+         * Checks the specified comment for matches of the configured warning terms and returns the matches.
+         * @param {string} comment The comment which is checked.
+         * @returns {Array} All matched warning terms for this comment.
+         */
+        function commentContainsWarningTerm(comment) {
+            const matches = [];
+
+            warningRegExps.forEach((regex, index) => {
+                if (regex.test(comment)) {
+                    matches.push(warningTerms[index]);
+                }
+            });
+
+            return matches;
+        }
+
+        /**
+         * Checks the specified node for matching warning comments and reports them.
+         * @param {ASTNode} node The AST node being checked.
+         * @returns {void} undefined.
+         */
+        function checkComment(node) {
+            const comment = node.value;
+
+            if (
+                astUtils.isDirectiveComment(node) &&
+                selfConfigRegEx.test(comment)
+            ) {
+                return;
+            }
+
+            const matches = commentContainsWarningTerm(comment);
+
+            matches.forEach(matchedTerm => {
+                let commentToDisplay = "";
+                let truncated = false;
+
+                for (const c of comment.trim().split(/\s+/u)) {
+                    const tmp = commentToDisplay ? `${commentToDisplay} ${c}` : c;
+
+                    if (tmp.length <= CHAR_LIMIT) {
+                        commentToDisplay = tmp;
+                    } else {
+                        truncated = true;
+                        break;
+                    }
+                }
+
+                context.report({
+                    node,
+                    messageId: "unexpectedComment",
+                    data: {
+                        matchedTerm,
+                        comment: `${commentToDisplay}${
+                            truncated ? "..." : ""
+                        }`
+                    }
+                });
+            });
+        }
+
+        return {
+            Program() {
+                const comments = sourceCode.getAllComments();
+
+                comments
+                    .filter(token => token.type !== "Shebang")
+                    .forEach(checkComment);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-whitespace-before-property.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-whitespace-before-property.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-whitespace-before-property.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,116 @@
+/**
+ * @fileoverview Rule to disallow whitespace before properties
+ * @author Kai Cataldo
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Disallow whitespace before properties",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/no-whitespace-before-property"
+        },
+
+        fixable: "whitespace",
+        schema: [],
+
+        messages: {
+            unexpectedWhitespace: "Unexpected whitespace before property {{propName}}."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Reports whitespace before property token
+         * @param {ASTNode} node the node to report in the event of an error
+         * @param {Token} leftToken the left token
+         * @param {Token} rightToken the right token
+         * @returns {void}
+         * @private
+         */
+        function reportError(node, leftToken, rightToken) {
+            context.report({
+                node,
+                messageId: "unexpectedWhitespace",
+                data: {
+                    propName: sourceCode.getText(node.property)
+                },
+                fix(fixer) {
+                    let replacementText = "";
+
+                    if (!node.computed && !node.optional && astUtils.isDecimalInteger(node.object)) {
+
+                        /*
+                         * If the object is a number literal, fixing it to something like 5.toString() would cause a SyntaxError.
+                         * Don't fix this case.
+                         */
+                        return null;
+                    }
+
+                    // Don't fix if comments exist.
+                    if (sourceCode.commentsExistBetween(leftToken, rightToken)) {
+                        return null;
+                    }
+
+                    if (node.optional) {
+                        replacementText = "?.";
+                    } else if (!node.computed) {
+                        replacementText = ".";
+                    }
+
+                    return fixer.replaceTextRange([leftToken.range[1], rightToken.range[0]], replacementText);
+                }
+            });
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            MemberExpression(node) {
+                let rightToken;
+                let leftToken;
+
+                if (!astUtils.isTokenOnSameLine(node.object, node.property)) {
+                    return;
+                }
+
+                if (node.computed) {
+                    rightToken = sourceCode.getTokenBefore(node.property, astUtils.isOpeningBracketToken);
+                    leftToken = sourceCode.getTokenBefore(rightToken, node.optional ? 1 : 0);
+                } else {
+                    rightToken = sourceCode.getFirstToken(node.property);
+                    leftToken = sourceCode.getTokenBefore(rightToken, 1);
+                }
+
+                if (sourceCode.isSpaceBetweenTokens(leftToken, rightToken)) {
+                    reportError(node, leftToken, rightToken);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/no-with.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/no-with.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/no-with.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,39 @@
+/**
+ * @fileoverview Rule to flag use of with statement
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `with` statements",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-with"
+        },
+
+        schema: [],
+
+        messages: {
+            unexpectedWith: "Unexpected use of 'with' statement."
+        }
+    },
+
+    create(context) {
+
+        return {
+            WithStatement(node) {
+                context.report({ node, messageId: "unexpectedWith" });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/nonblock-statement-body-position.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/nonblock-statement-body-position.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/nonblock-statement-body-position.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,127 @@
+/**
+ * @fileoverview enforce the location of single-line statements
+ * @author Teddy Katz
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const POSITION_SCHEMA = { enum: ["beside", "below", "any"] };
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce the location of single-line statements",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/nonblock-statement-body-position"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            POSITION_SCHEMA,
+            {
+                properties: {
+                    overrides: {
+                        properties: {
+                            if: POSITION_SCHEMA,
+                            else: POSITION_SCHEMA,
+                            while: POSITION_SCHEMA,
+                            do: POSITION_SCHEMA,
+                            for: POSITION_SCHEMA
+                        },
+                        additionalProperties: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            expectNoLinebreak: "Expected no linebreak before this statement.",
+            expectLinebreak: "Expected a linebreak before this statement."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        //----------------------------------------------------------------------
+        // Helpers
+        //----------------------------------------------------------------------
+
+        /**
+         * Gets the applicable preference for a particular keyword
+         * @param {string} keywordName The name of a keyword, e.g. 'if'
+         * @returns {string} The applicable option for the keyword, e.g. 'beside'
+         */
+        function getOption(keywordName) {
+            return context.options[1] && context.options[1].overrides && context.options[1].overrides[keywordName] ||
+                context.options[0] ||
+                "beside";
+        }
+
+        /**
+         * Validates the location of a single-line statement
+         * @param {ASTNode} node The single-line statement
+         * @param {string} keywordName The applicable keyword name for the single-line statement
+         * @returns {void}
+         */
+        function validateStatement(node, keywordName) {
+            const option = getOption(keywordName);
+
+            if (node.type === "BlockStatement" || option === "any") {
+                return;
+            }
+
+            const tokenBefore = sourceCode.getTokenBefore(node);
+
+            if (tokenBefore.loc.end.line === node.loc.start.line && option === "below") {
+                context.report({
+                    node,
+                    messageId: "expectLinebreak",
+                    fix: fixer => fixer.insertTextBefore(node, "\n")
+                });
+            } else if (tokenBefore.loc.end.line !== node.loc.start.line && option === "beside") {
+                context.report({
+                    node,
+                    messageId: "expectNoLinebreak",
+                    fix(fixer) {
+                        if (sourceCode.getText().slice(tokenBefore.range[1], node.range[0]).trim()) {
+                            return null;
+                        }
+                        return fixer.replaceTextRange([tokenBefore.range[1], node.range[0]], " ");
+                    }
+                });
+            }
+        }
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+            IfStatement(node) {
+                validateStatement(node.consequent, "if");
+
+                // Check the `else` node, but don't check 'else if' statements.
+                if (node.alternate && node.alternate.type !== "IfStatement") {
+                    validateStatement(node.alternate, "else");
+                }
+            },
+            WhileStatement: node => validateStatement(node.body, "while"),
+            DoWhileStatement: node => validateStatement(node.body, "do"),
+            ForStatement: node => validateStatement(node.body, "for"),
+            ForInStatement: node => validateStatement(node.body, "for"),
+            ForOfStatement: node => validateStatement(node.body, "for")
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/object-curly-newline.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/object-curly-newline.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/object-curly-newline.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,324 @@
+/**
+ * @fileoverview Rule to require or disallow line breaks inside braces.
+ * @author Toru Nagashima
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+// Schema objects.
+const OPTION_VALUE = {
+    oneOf: [
+        {
+            enum: ["always", "never"]
+        },
+        {
+            type: "object",
+            properties: {
+                multiline: {
+                    type: "boolean"
+                },
+                minProperties: {
+                    type: "integer",
+                    minimum: 0
+                },
+                consistent: {
+                    type: "boolean"
+                }
+            },
+            additionalProperties: false,
+            minProperties: 1
+        }
+    ]
+};
+
+/**
+ * Normalizes a given option value.
+ * @param {string|Object|undefined} value An option value to parse.
+ * @returns {{multiline: boolean, minProperties: number, consistent: boolean}} Normalized option object.
+ */
+function normalizeOptionValue(value) {
+    let multiline = false;
+    let minProperties = Number.POSITIVE_INFINITY;
+    let consistent = false;
+
+    if (value) {
+        if (value === "always") {
+            minProperties = 0;
+        } else if (value === "never") {
+            minProperties = Number.POSITIVE_INFINITY;
+        } else {
+            multiline = Boolean(value.multiline);
+            minProperties = value.minProperties || Number.POSITIVE_INFINITY;
+            consistent = Boolean(value.consistent);
+        }
+    } else {
+        consistent = true;
+    }
+
+    return { multiline, minProperties, consistent };
+}
+
+/**
+ * Checks if a value is an object.
+ * @param {any} value The value to check
+ * @returns {boolean} `true` if the value is an object, otherwise `false`
+ */
+function isObject(value) {
+    return typeof value === "object" && value !== null;
+}
+
+/**
+ * Checks if an option is a node-specific option
+ * @param {any} option The option to check
+ * @returns {boolean} `true` if the option is node-specific, otherwise `false`
+ */
+function isNodeSpecificOption(option) {
+    return isObject(option) || typeof option === "string";
+}
+
+/**
+ * Normalizes a given option value.
+ * @param {string|Object|undefined} options An option value to parse.
+ * @returns {{
+ *   ObjectExpression: {multiline: boolean, minProperties: number, consistent: boolean},
+ *   ObjectPattern: {multiline: boolean, minProperties: number, consistent: boolean},
+ *   ImportDeclaration: {multiline: boolean, minProperties: number, consistent: boolean},
+ *   ExportNamedDeclaration : {multiline: boolean, minProperties: number, consistent: boolean}
+ * }} Normalized option object.
+ */
+function normalizeOptions(options) {
+    if (isObject(options) && Object.values(options).some(isNodeSpecificOption)) {
+        return {
+            ObjectExpression: normalizeOptionValue(options.ObjectExpression),
+            ObjectPattern: normalizeOptionValue(options.ObjectPattern),
+            ImportDeclaration: normalizeOptionValue(options.ImportDeclaration),
+            ExportNamedDeclaration: normalizeOptionValue(options.ExportDeclaration)
+        };
+    }
+
+    const value = normalizeOptionValue(options);
+
+    return { ObjectExpression: value, ObjectPattern: value, ImportDeclaration: value, ExportNamedDeclaration: value };
+}
+
+/**
+ * Determines if ObjectExpression, ObjectPattern, ImportDeclaration or ExportNamedDeclaration
+ * node needs to be checked for missing line breaks
+ * @param {ASTNode} node Node under inspection
+ * @param {Object} options option specific to node type
+ * @param {Token} first First object property
+ * @param {Token} last Last object property
+ * @returns {boolean} `true` if node needs to be checked for missing line breaks
+ */
+function areLineBreaksRequired(node, options, first, last) {
+    let objectProperties;
+
+    if (node.type === "ObjectExpression" || node.type === "ObjectPattern") {
+        objectProperties = node.properties;
+    } else {
+
+        // is ImportDeclaration or ExportNamedDeclaration
+        objectProperties = node.specifiers
+            .filter(s => s.type === "ImportSpecifier" || s.type === "ExportSpecifier");
+    }
+
+    return objectProperties.length >= options.minProperties ||
+        (
+            options.multiline &&
+            objectProperties.length > 0 &&
+            first.loc.start.line !== last.loc.end.line
+        );
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent line breaks after opening and before closing braces",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/object-curly-newline"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    OPTION_VALUE,
+                    {
+                        type: "object",
+                        properties: {
+                            ObjectExpression: OPTION_VALUE,
+                            ObjectPattern: OPTION_VALUE,
+                            ImportDeclaration: OPTION_VALUE,
+                            ExportDeclaration: OPTION_VALUE
+                        },
+                        additionalProperties: false,
+                        minProperties: 1
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            unexpectedLinebreakBeforeClosingBrace: "Unexpected line break before this closing brace.",
+            unexpectedLinebreakAfterOpeningBrace: "Unexpected line break after this opening brace.",
+            expectedLinebreakBeforeClosingBrace: "Expected a line break before this closing brace.",
+            expectedLinebreakAfterOpeningBrace: "Expected a line break after this opening brace."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const normalizedOptions = normalizeOptions(context.options[0]);
+
+        /**
+         * Reports a given node if it violated this rule.
+         * @param {ASTNode} node A node to check. This is an ObjectExpression, ObjectPattern, ImportDeclaration or ExportNamedDeclaration node.
+         * @returns {void}
+         */
+        function check(node) {
+            const options = normalizedOptions[node.type];
+
+            if (
+                (node.type === "ImportDeclaration" &&
+                    !node.specifiers.some(specifier => specifier.type === "ImportSpecifier")) ||
+                (node.type === "ExportNamedDeclaration" &&
+                    !node.specifiers.some(specifier => specifier.type === "ExportSpecifier"))
+            ) {
+                return;
+            }
+
+            const openBrace = sourceCode.getFirstToken(node, token => token.value === "{");
+
+            let closeBrace;
+
+            if (node.typeAnnotation) {
+                closeBrace = sourceCode.getTokenBefore(node.typeAnnotation);
+            } else {
+                closeBrace = sourceCode.getLastToken(node, token => token.value === "}");
+            }
+
+            let first = sourceCode.getTokenAfter(openBrace, { includeComments: true });
+            let last = sourceCode.getTokenBefore(closeBrace, { includeComments: true });
+
+            const needsLineBreaks = areLineBreaksRequired(node, options, first, last);
+
+            const hasCommentsFirstToken = astUtils.isCommentToken(first);
+            const hasCommentsLastToken = astUtils.isCommentToken(last);
+
+            /*
+             * Use tokens or comments to check multiline or not.
+             * But use only tokens to check whether line breaks are needed.
+             * This allows:
+             *     var obj = { // eslint-disable-line foo
+             *         a: 1
+             *     }
+             */
+            first = sourceCode.getTokenAfter(openBrace);
+            last = sourceCode.getTokenBefore(closeBrace);
+
+            if (needsLineBreaks) {
+                if (astUtils.isTokenOnSameLine(openBrace, first)) {
+                    context.report({
+                        messageId: "expectedLinebreakAfterOpeningBrace",
+                        node,
+                        loc: openBrace.loc,
+                        fix(fixer) {
+                            if (hasCommentsFirstToken) {
+                                return null;
+                            }
+
+                            return fixer.insertTextAfter(openBrace, "\n");
+                        }
+                    });
+                }
+                if (astUtils.isTokenOnSameLine(last, closeBrace)) {
+                    context.report({
+                        messageId: "expectedLinebreakBeforeClosingBrace",
+                        node,
+                        loc: closeBrace.loc,
+                        fix(fixer) {
+                            if (hasCommentsLastToken) {
+                                return null;
+                            }
+
+                            return fixer.insertTextBefore(closeBrace, "\n");
+                        }
+                    });
+                }
+            } else {
+                const consistent = options.consistent;
+                const hasLineBreakBetweenOpenBraceAndFirst = !astUtils.isTokenOnSameLine(openBrace, first);
+                const hasLineBreakBetweenCloseBraceAndLast = !astUtils.isTokenOnSameLine(last, closeBrace);
+
+                if (
+                    (!consistent && hasLineBreakBetweenOpenBraceAndFirst) ||
+                    (consistent && hasLineBreakBetweenOpenBraceAndFirst && !hasLineBreakBetweenCloseBraceAndLast)
+                ) {
+                    context.report({
+                        messageId: "unexpectedLinebreakAfterOpeningBrace",
+                        node,
+                        loc: openBrace.loc,
+                        fix(fixer) {
+                            if (hasCommentsFirstToken) {
+                                return null;
+                            }
+
+                            return fixer.removeRange([
+                                openBrace.range[1],
+                                first.range[0]
+                            ]);
+                        }
+                    });
+                }
+                if (
+                    (!consistent && hasLineBreakBetweenCloseBraceAndLast) ||
+                    (consistent && !hasLineBreakBetweenOpenBraceAndFirst && hasLineBreakBetweenCloseBraceAndLast)
+                ) {
+                    context.report({
+                        messageId: "unexpectedLinebreakBeforeClosingBrace",
+                        node,
+                        loc: closeBrace.loc,
+                        fix(fixer) {
+                            if (hasCommentsLastToken) {
+                                return null;
+                            }
+
+                            return fixer.removeRange([
+                                last.range[1],
+                                closeBrace.range[0]
+                            ]);
+                        }
+                    });
+                }
+            }
+        }
+
+        return {
+            ObjectExpression: check,
+            ObjectPattern: check,
+            ImportDeclaration: check,
+            ExportNamedDeclaration: check
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/object-curly-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/object-curly-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/object-curly-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,311 @@
+/**
+ * @fileoverview Disallows or enforces spaces inside of object literals.
+ * @author Jamund Ferguson
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent spacing inside braces",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/object-curly-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            },
+            {
+                type: "object",
+                properties: {
+                    arraysInObjects: {
+                        type: "boolean"
+                    },
+                    objectsInObjects: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            requireSpaceBefore: "A space is required before '{{token}}'.",
+            requireSpaceAfter: "A space is required after '{{token}}'.",
+            unexpectedSpaceBefore: "There should be no space before '{{token}}'.",
+            unexpectedSpaceAfter: "There should be no space after '{{token}}'."
+        }
+    },
+
+    create(context) {
+        const spaced = context.options[0] === "always",
+            sourceCode = context.sourceCode;
+
+        /**
+         * Determines whether an option is set, relative to the spacing option.
+         * If spaced is "always", then check whether option is set to false.
+         * If spaced is "never", then check whether option is set to true.
+         * @param {Object} option The option to exclude.
+         * @returns {boolean} Whether or not the property is excluded.
+         */
+        function isOptionSet(option) {
+            return context.options[1] ? context.options[1][option] === !spaced : false;
+        }
+
+        const options = {
+            spaced,
+            arraysInObjectsException: isOptionSet("arraysInObjects"),
+            objectsInObjectsException: isOptionSet("objectsInObjects")
+        };
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Reports that there shouldn't be a space after the first token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportNoBeginningSpace(node, token) {
+            const nextToken = context.sourceCode.getTokenAfter(token, { includeComments: true });
+
+            context.report({
+                node,
+                loc: { start: token.loc.end, end: nextToken.loc.start },
+                messageId: "unexpectedSpaceAfter",
+                data: {
+                    token: token.value
+                },
+                fix(fixer) {
+                    return fixer.removeRange([token.range[1], nextToken.range[0]]);
+                }
+            });
+        }
+
+        /**
+         * Reports that there shouldn't be a space before the last token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportNoEndingSpace(node, token) {
+            const previousToken = context.sourceCode.getTokenBefore(token, { includeComments: true });
+
+            context.report({
+                node,
+                loc: { start: previousToken.loc.end, end: token.loc.start },
+                messageId: "unexpectedSpaceBefore",
+                data: {
+                    token: token.value
+                },
+                fix(fixer) {
+                    return fixer.removeRange([previousToken.range[1], token.range[0]]);
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a space after the first token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredBeginningSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc,
+                messageId: "requireSpaceAfter",
+                data: {
+                    token: token.value
+                },
+                fix(fixer) {
+                    return fixer.insertTextAfter(token, " ");
+                }
+            });
+        }
+
+        /**
+         * Reports that there should be a space before the last token
+         * @param {ASTNode} node The node to report in the event of an error.
+         * @param {Token} token The token to use for the report.
+         * @returns {void}
+         */
+        function reportRequiredEndingSpace(node, token) {
+            context.report({
+                node,
+                loc: token.loc,
+                messageId: "requireSpaceBefore",
+                data: {
+                    token: token.value
+                },
+                fix(fixer) {
+                    return fixer.insertTextBefore(token, " ");
+                }
+            });
+        }
+
+        /**
+         * Determines if spacing in curly braces is valid.
+         * @param {ASTNode} node The AST node to check.
+         * @param {Token} first The first token to check (should be the opening brace)
+         * @param {Token} second The second token to check (should be first after the opening brace)
+         * @param {Token} penultimate The penultimate token to check (should be last before closing brace)
+         * @param {Token} last The last token to check (should be closing brace)
+         * @returns {void}
+         */
+        function validateBraceSpacing(node, first, second, penultimate, last) {
+            if (astUtils.isTokenOnSameLine(first, second)) {
+                const firstSpaced = sourceCode.isSpaceBetweenTokens(first, second);
+
+                if (options.spaced && !firstSpaced) {
+                    reportRequiredBeginningSpace(node, first);
+                }
+                if (!options.spaced && firstSpaced && second.type !== "Line") {
+                    reportNoBeginningSpace(node, first);
+                }
+            }
+
+            if (astUtils.isTokenOnSameLine(penultimate, last)) {
+                const shouldCheckPenultimate = (
+                    options.arraysInObjectsException && astUtils.isClosingBracketToken(penultimate) ||
+                    options.objectsInObjectsException && astUtils.isClosingBraceToken(penultimate)
+                );
+                const penultimateType = shouldCheckPenultimate && sourceCode.getNodeByRangeIndex(penultimate.range[0]).type;
+
+                const closingCurlyBraceMustBeSpaced = (
+                    options.arraysInObjectsException && penultimateType === "ArrayExpression" ||
+                    options.objectsInObjectsException && (penultimateType === "ObjectExpression" || penultimateType === "ObjectPattern")
+                ) ? !options.spaced : options.spaced;
+
+                const lastSpaced = sourceCode.isSpaceBetweenTokens(penultimate, last);
+
+                if (closingCurlyBraceMustBeSpaced && !lastSpaced) {
+                    reportRequiredEndingSpace(node, last);
+                }
+                if (!closingCurlyBraceMustBeSpaced && lastSpaced) {
+                    reportNoEndingSpace(node, last);
+                }
+            }
+        }
+
+        /**
+         * Gets '}' token of an object node.
+         *
+         * Because the last token of object patterns might be a type annotation,
+         * this traverses tokens preceded by the last property, then returns the
+         * first '}' token.
+         * @param {ASTNode} node The node to get. This node is an
+         *      ObjectExpression or an ObjectPattern. And this node has one or
+         *      more properties.
+         * @returns {Token} '}' token.
+         */
+        function getClosingBraceOfObject(node) {
+            const lastProperty = node.properties[node.properties.length - 1];
+
+            return sourceCode.getTokenAfter(lastProperty, astUtils.isClosingBraceToken);
+        }
+
+        /**
+         * Reports a given object node if spacing in curly braces is invalid.
+         * @param {ASTNode} node An ObjectExpression or ObjectPattern node to check.
+         * @returns {void}
+         */
+        function checkForObject(node) {
+            if (node.properties.length === 0) {
+                return;
+            }
+
+            const first = sourceCode.getFirstToken(node),
+                last = getClosingBraceOfObject(node),
+                second = sourceCode.getTokenAfter(first, { includeComments: true }),
+                penultimate = sourceCode.getTokenBefore(last, { includeComments: true });
+
+            validateBraceSpacing(node, first, second, penultimate, last);
+        }
+
+        /**
+         * Reports a given import node if spacing in curly braces is invalid.
+         * @param {ASTNode} node An ImportDeclaration node to check.
+         * @returns {void}
+         */
+        function checkForImport(node) {
+            if (node.specifiers.length === 0) {
+                return;
+            }
+
+            let firstSpecifier = node.specifiers[0];
+            const lastSpecifier = node.specifiers[node.specifiers.length - 1];
+
+            if (lastSpecifier.type !== "ImportSpecifier") {
+                return;
+            }
+            if (firstSpecifier.type !== "ImportSpecifier") {
+                firstSpecifier = node.specifiers[1];
+            }
+
+            const first = sourceCode.getTokenBefore(firstSpecifier),
+                last = sourceCode.getTokenAfter(lastSpecifier, astUtils.isNotCommaToken),
+                second = sourceCode.getTokenAfter(first, { includeComments: true }),
+                penultimate = sourceCode.getTokenBefore(last, { includeComments: true });
+
+            validateBraceSpacing(node, first, second, penultimate, last);
+        }
+
+        /**
+         * Reports a given export node if spacing in curly braces is invalid.
+         * @param {ASTNode} node An ExportNamedDeclaration node to check.
+         * @returns {void}
+         */
+        function checkForExport(node) {
+            if (node.specifiers.length === 0) {
+                return;
+            }
+
+            const firstSpecifier = node.specifiers[0],
+                lastSpecifier = node.specifiers[node.specifiers.length - 1],
+                first = sourceCode.getTokenBefore(firstSpecifier),
+                last = sourceCode.getTokenAfter(lastSpecifier, astUtils.isNotCommaToken),
+                second = sourceCode.getTokenAfter(first, { includeComments: true }),
+                penultimate = sourceCode.getTokenBefore(last, { includeComments: true });
+
+            validateBraceSpacing(node, first, second, penultimate, last);
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+
+            // var {x} = y;
+            ObjectPattern: checkForObject,
+
+            // var y = {x: 'y'}
+            ObjectExpression: checkForObject,
+
+            // import {y} from 'x';
+            ImportDeclaration: checkForImport,
+
+            // export {name} from 'yo';
+            ExportNamedDeclaration: checkForExport
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/object-property-newline.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/object-property-newline.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/object-property-newline.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,102 @@
+/**
+ * @fileoverview Rule to enforce placing object properties on separate lines.
+ * @author Vitor Balocco
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce placing object properties on separate lines",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/object-property-newline"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowAllPropertiesOnSameLine: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowMultiplePropertiesPerLine: { // Deprecated
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "whitespace",
+
+        messages: {
+            propertiesOnNewlineAll: "Object properties must go on a new line if they aren't all on the same line.",
+            propertiesOnNewline: "Object properties must go on a new line."
+        }
+    },
+
+    create(context) {
+        const allowSameLine = context.options[0] && (
+            (context.options[0].allowAllPropertiesOnSameLine || context.options[0].allowMultiplePropertiesPerLine /* Deprecated */)
+        );
+        const messageId = allowSameLine
+            ? "propertiesOnNewlineAll"
+            : "propertiesOnNewline";
+
+        const sourceCode = context.sourceCode;
+
+        return {
+            ObjectExpression(node) {
+                if (allowSameLine) {
+                    if (node.properties.length > 1) {
+                        const firstTokenOfFirstProperty = sourceCode.getFirstToken(node.properties[0]);
+                        const lastTokenOfLastProperty = sourceCode.getLastToken(node.properties[node.properties.length - 1]);
+
+                        if (firstTokenOfFirstProperty.loc.end.line === lastTokenOfLastProperty.loc.start.line) {
+
+                            // All keys and values are on the same line
+                            return;
+                        }
+                    }
+                }
+
+                for (let i = 1; i < node.properties.length; i++) {
+                    const lastTokenOfPreviousProperty = sourceCode.getLastToken(node.properties[i - 1]);
+                    const firstTokenOfCurrentProperty = sourceCode.getFirstToken(node.properties[i]);
+
+                    if (lastTokenOfPreviousProperty.loc.end.line === firstTokenOfCurrentProperty.loc.start.line) {
+                        context.report({
+                            node,
+                            loc: firstTokenOfCurrentProperty.loc,
+                            messageId,
+                            fix(fixer) {
+                                const comma = sourceCode.getTokenBefore(firstTokenOfCurrentProperty);
+                                const rangeAfterComma = [comma.range[1], firstTokenOfCurrentProperty.range[0]];
+
+                                // Don't perform a fix if there are any comments between the comma and the next property.
+                                if (sourceCode.text.slice(rangeAfterComma[0], rangeAfterComma[1]).trim()) {
+                                    return null;
+                                }
+
+                                return fixer.replaceTextRange(rangeAfterComma, "\n");
+                            }
+                        });
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/object-shorthand.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/object-shorthand.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/object-shorthand.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,520 @@
+/**
+ * @fileoverview Rule to enforce concise object methods and properties.
+ * @author Jamund Ferguson
+ */
+
+"use strict";
+
+const OPTIONS = {
+    always: "always",
+    never: "never",
+    methods: "methods",
+    properties: "properties",
+    consistent: "consistent",
+    consistentAsNeeded: "consistent-as-needed"
+};
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require or disallow method and property shorthand syntax for object literals",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/object-shorthand"
+        },
+
+        fixable: "code",
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always", "methods", "properties", "never", "consistent", "consistent-as-needed"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always", "methods", "properties"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                avoidQuotes: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always", "methods"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                ignoreConstructors: {
+                                    type: "boolean"
+                                },
+                                methodsIgnorePattern: {
+                                    type: "string"
+                                },
+                                avoidQuotes: {
+                                    type: "boolean"
+                                },
+                                avoidExplicitReturnArrows: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        },
+
+        messages: {
+            expectedAllPropertiesShorthanded: "Expected shorthand for all properties.",
+            expectedLiteralMethodLongform: "Expected longform method syntax for string literal keys.",
+            expectedPropertyShorthand: "Expected property shorthand.",
+            expectedPropertyLongform: "Expected longform property syntax.",
+            expectedMethodShorthand: "Expected method shorthand.",
+            expectedMethodLongform: "Expected longform method syntax.",
+            unexpectedMix: "Unexpected mix of shorthand and non-shorthand properties."
+        }
+    },
+
+    create(context) {
+        const APPLY = context.options[0] || OPTIONS.always;
+        const APPLY_TO_METHODS = APPLY === OPTIONS.methods || APPLY === OPTIONS.always;
+        const APPLY_TO_PROPS = APPLY === OPTIONS.properties || APPLY === OPTIONS.always;
+        const APPLY_NEVER = APPLY === OPTIONS.never;
+        const APPLY_CONSISTENT = APPLY === OPTIONS.consistent;
+        const APPLY_CONSISTENT_AS_NEEDED = APPLY === OPTIONS.consistentAsNeeded;
+
+        const PARAMS = context.options[1] || {};
+        const IGNORE_CONSTRUCTORS = PARAMS.ignoreConstructors;
+        const METHODS_IGNORE_PATTERN = PARAMS.methodsIgnorePattern
+            ? new RegExp(PARAMS.methodsIgnorePattern, "u")
+            : null;
+        const AVOID_QUOTES = PARAMS.avoidQuotes;
+        const AVOID_EXPLICIT_RETURN_ARROWS = !!PARAMS.avoidExplicitReturnArrows;
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const CTOR_PREFIX_REGEX = /[^_$0-9]/u;
+
+        /**
+         * Determines if the first character of the name is a capital letter.
+         * @param {string} name The name of the node to evaluate.
+         * @returns {boolean} True if the first character of the property name is a capital letter, false if not.
+         * @private
+         */
+        function isConstructor(name) {
+            const match = CTOR_PREFIX_REGEX.exec(name);
+
+            // Not a constructor if name has no characters apart from '_', '$' and digits e.g. '_', '$$', '_8'
+            if (!match) {
+                return false;
+            }
+
+            const firstChar = name.charAt(match.index);
+
+            return firstChar === firstChar.toUpperCase();
+        }
+
+        /**
+         * Determines if the property can have a shorthand form.
+         * @param {ASTNode} property Property AST node
+         * @returns {boolean} True if the property can have a shorthand form
+         * @private
+         */
+        function canHaveShorthand(property) {
+            return (property.kind !== "set" && property.kind !== "get" && property.type !== "SpreadElement" && property.type !== "SpreadProperty" && property.type !== "ExperimentalSpreadProperty");
+        }
+
+        /**
+         * Checks whether a node is a string literal.
+         * @param {ASTNode} node Any AST node.
+         * @returns {boolean} `true` if it is a string literal.
+         */
+        function isStringLiteral(node) {
+            return node.type === "Literal" && typeof node.value === "string";
+        }
+
+        /**
+         * Determines if the property is a shorthand or not.
+         * @param {ASTNode} property Property AST node
+         * @returns {boolean} True if the property is considered shorthand, false if not.
+         * @private
+         */
+        function isShorthand(property) {
+
+            // property.method is true when `{a(){}}`.
+            return (property.shorthand || property.method);
+        }
+
+        /**
+         * Determines if the property's key and method or value are named equally.
+         * @param {ASTNode} property Property AST node
+         * @returns {boolean} True if the key and value are named equally, false if not.
+         * @private
+         */
+        function isRedundant(property) {
+            const value = property.value;
+
+            if (value.type === "FunctionExpression") {
+                return !value.id; // Only anonymous should be shorthand method.
+            }
+            if (value.type === "Identifier") {
+                return astUtils.getStaticPropertyName(property) === value.name;
+            }
+
+            return false;
+        }
+
+        /**
+         * Ensures that an object's properties are consistently shorthand, or not shorthand at all.
+         * @param {ASTNode} node Property AST node
+         * @param {boolean} checkRedundancy Whether to check longform redundancy
+         * @returns {void}
+         */
+        function checkConsistency(node, checkRedundancy) {
+
+            // We are excluding getters/setters and spread properties as they are considered neither longform nor shorthand.
+            const properties = node.properties.filter(canHaveShorthand);
+
+            // Do we still have properties left after filtering the getters and setters?
+            if (properties.length > 0) {
+                const shorthandProperties = properties.filter(isShorthand);
+
+                /*
+                 * If we do not have an equal number of longform properties as
+                 * shorthand properties, we are using the annotations inconsistently
+                 */
+                if (shorthandProperties.length !== properties.length) {
+
+                    // We have at least 1 shorthand property
+                    if (shorthandProperties.length > 0) {
+                        context.report({ node, messageId: "unexpectedMix" });
+                    } else if (checkRedundancy) {
+
+                        /*
+                         * If all properties of the object contain a method or value with a name matching it's key,
+                         * all the keys are redundant.
+                         */
+                        const canAlwaysUseShorthand = properties.every(isRedundant);
+
+                        if (canAlwaysUseShorthand) {
+                            context.report({ node, messageId: "expectedAllPropertiesShorthanded" });
+                        }
+                    }
+                }
+            }
+        }
+
+        /**
+         * Fixes a FunctionExpression node by making it into a shorthand property.
+         * @param {SourceCodeFixer} fixer The fixer object
+         * @param {ASTNode} node A `Property` node that has a `FunctionExpression` or `ArrowFunctionExpression` as its value
+         * @returns {Object} A fix for this node
+         */
+        function makeFunctionShorthand(fixer, node) {
+            const firstKeyToken = node.computed
+                ? sourceCode.getFirstToken(node, astUtils.isOpeningBracketToken)
+                : sourceCode.getFirstToken(node.key);
+            const lastKeyToken = node.computed
+                ? sourceCode.getFirstTokenBetween(node.key, node.value, astUtils.isClosingBracketToken)
+                : sourceCode.getLastToken(node.key);
+            const keyText = sourceCode.text.slice(firstKeyToken.range[0], lastKeyToken.range[1]);
+            let keyPrefix = "";
+
+            // key: /* */ () => {}
+            if (sourceCode.commentsExistBetween(lastKeyToken, node.value)) {
+                return null;
+            }
+
+            if (node.value.async) {
+                keyPrefix += "async ";
+            }
+            if (node.value.generator) {
+                keyPrefix += "*";
+            }
+
+            const fixRange = [firstKeyToken.range[0], node.range[1]];
+            const methodPrefix = keyPrefix + keyText;
+
+            if (node.value.type === "FunctionExpression") {
+                const functionToken = sourceCode.getTokens(node.value).find(token => token.type === "Keyword" && token.value === "function");
+                const tokenBeforeParams = node.value.generator ? sourceCode.getTokenAfter(functionToken) : functionToken;
+
+                return fixer.replaceTextRange(
+                    fixRange,
+                    methodPrefix + sourceCode.text.slice(tokenBeforeParams.range[1], node.value.range[1])
+                );
+            }
+
+            const arrowToken = sourceCode.getTokenBefore(node.value.body, astUtils.isArrowToken);
+            const fnBody = sourceCode.text.slice(arrowToken.range[1], node.value.range[1]);
+
+            let shouldAddParensAroundParameters = false;
+            let tokenBeforeParams;
+
+            if (node.value.params.length === 0) {
+                tokenBeforeParams = sourceCode.getFirstToken(node.value, astUtils.isOpeningParenToken);
+            } else {
+                tokenBeforeParams = sourceCode.getTokenBefore(node.value.params[0]);
+            }
+
+            if (node.value.params.length === 1) {
+                const hasParen = astUtils.isOpeningParenToken(tokenBeforeParams);
+                const isTokenOutsideNode = tokenBeforeParams.range[0] < node.range[0];
+
+                shouldAddParensAroundParameters = !hasParen || isTokenOutsideNode;
+            }
+
+            const sliceStart = shouldAddParensAroundParameters
+                ? node.value.params[0].range[0]
+                : tokenBeforeParams.range[0];
+            const sliceEnd = sourceCode.getTokenBefore(arrowToken).range[1];
+
+            const oldParamText = sourceCode.text.slice(sliceStart, sliceEnd);
+            const newParamText = shouldAddParensAroundParameters ? `(${oldParamText})` : oldParamText;
+
+            return fixer.replaceTextRange(
+                fixRange,
+                methodPrefix + newParamText + fnBody
+            );
+
+        }
+
+        /**
+         * Fixes a FunctionExpression node by making it into a longform property.
+         * @param {SourceCodeFixer} fixer The fixer object
+         * @param {ASTNode} node A `Property` node that has a `FunctionExpression` as its value
+         * @returns {Object} A fix for this node
+         */
+        function makeFunctionLongform(fixer, node) {
+            const firstKeyToken = node.computed ? sourceCode.getTokens(node).find(token => token.value === "[") : sourceCode.getFirstToken(node.key);
+            const lastKeyToken = node.computed ? sourceCode.getTokensBetween(node.key, node.value).find(token => token.value === "]") : sourceCode.getLastToken(node.key);
+            const keyText = sourceCode.text.slice(firstKeyToken.range[0], lastKeyToken.range[1]);
+            let functionHeader = "function";
+
+            if (node.value.async) {
+                functionHeader = `async ${functionHeader}`;
+            }
+            if (node.value.generator) {
+                functionHeader = `${functionHeader}*`;
+            }
+
+            return fixer.replaceTextRange([node.range[0], lastKeyToken.range[1]], `${keyText}: ${functionHeader}`);
+        }
+
+        /*
+         * To determine whether a given arrow function has a lexical identifier (`this`, `arguments`, `super`, or `new.target`),
+         * create a stack of functions that define these identifiers (i.e. all functions except arrow functions) as the AST is
+         * traversed. Whenever a new function is encountered, create a new entry on the stack (corresponding to a different lexical
+         * scope of `this`), and whenever a function is exited, pop that entry off the stack. When an arrow function is entered,
+         * keep a reference to it on the current stack entry, and remove that reference when the arrow function is exited.
+         * When a lexical identifier is encountered, mark all the arrow functions on the current stack entry by adding them
+         * to an `arrowsWithLexicalIdentifiers` set. Any arrow function in that set will not be reported by this rule,
+         * because converting it into a method would change the value of one of the lexical identifiers.
+         */
+        const lexicalScopeStack = [];
+        const arrowsWithLexicalIdentifiers = new WeakSet();
+        const argumentsIdentifiers = new WeakSet();
+
+        /**
+         * Enters a function. This creates a new lexical identifier scope, so a new Set of arrow functions is pushed onto the stack.
+         * Also, this marks all `arguments` identifiers so that they can be detected later.
+         * @param {ASTNode} node The node representing the function.
+         * @returns {void}
+         */
+        function enterFunction(node) {
+            lexicalScopeStack.unshift(new Set());
+            sourceCode.getScope(node).variables.filter(variable => variable.name === "arguments").forEach(variable => {
+                variable.references.map(ref => ref.identifier).forEach(identifier => argumentsIdentifiers.add(identifier));
+            });
+        }
+
+        /**
+         * Exits a function. This pops the current set of arrow functions off the lexical scope stack.
+         * @returns {void}
+         */
+        function exitFunction() {
+            lexicalScopeStack.shift();
+        }
+
+        /**
+         * Marks the current function as having a lexical keyword. This implies that all arrow functions
+         * in the current lexical scope contain a reference to this lexical keyword.
+         * @returns {void}
+         */
+        function reportLexicalIdentifier() {
+            lexicalScopeStack[0].forEach(arrowFunction => arrowsWithLexicalIdentifiers.add(arrowFunction));
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: enterFunction,
+            FunctionDeclaration: enterFunction,
+            FunctionExpression: enterFunction,
+            "Program:exit": exitFunction,
+            "FunctionDeclaration:exit": exitFunction,
+            "FunctionExpression:exit": exitFunction,
+
+            ArrowFunctionExpression(node) {
+                lexicalScopeStack[0].add(node);
+            },
+            "ArrowFunctionExpression:exit"(node) {
+                lexicalScopeStack[0].delete(node);
+            },
+
+            ThisExpression: reportLexicalIdentifier,
+            Super: reportLexicalIdentifier,
+            MetaProperty(node) {
+                if (node.meta.name === "new" && node.property.name === "target") {
+                    reportLexicalIdentifier();
+                }
+            },
+            Identifier(node) {
+                if (argumentsIdentifiers.has(node)) {
+                    reportLexicalIdentifier();
+                }
+            },
+
+            ObjectExpression(node) {
+                if (APPLY_CONSISTENT) {
+                    checkConsistency(node, false);
+                } else if (APPLY_CONSISTENT_AS_NEEDED) {
+                    checkConsistency(node, true);
+                }
+            },
+
+            "Property:exit"(node) {
+                const isConciseProperty = node.method || node.shorthand;
+
+                // Ignore destructuring assignment
+                if (node.parent.type === "ObjectPattern") {
+                    return;
+                }
+
+                // getters and setters are ignored
+                if (node.kind === "get" || node.kind === "set") {
+                    return;
+                }
+
+                // only computed methods can fail the following checks
+                if (node.computed && node.value.type !== "FunctionExpression" && node.value.type !== "ArrowFunctionExpression") {
+                    return;
+                }
+
+                //--------------------------------------------------------------
+                // Checks for property/method shorthand.
+                if (isConciseProperty) {
+                    if (node.method && (APPLY_NEVER || AVOID_QUOTES && isStringLiteral(node.key))) {
+                        const messageId = APPLY_NEVER ? "expectedMethodLongform" : "expectedLiteralMethodLongform";
+
+                        // { x() {} } should be written as { x: function() {} }
+                        context.report({
+                            node,
+                            messageId,
+                            fix: fixer => makeFunctionLongform(fixer, node)
+                        });
+                    } else if (APPLY_NEVER) {
+
+                        // { x } should be written as { x: x }
+                        context.report({
+                            node,
+                            messageId: "expectedPropertyLongform",
+                            fix: fixer => fixer.insertTextAfter(node.key, `: ${node.key.name}`)
+                        });
+                    }
+                } else if (APPLY_TO_METHODS && !node.value.id && (node.value.type === "FunctionExpression" || node.value.type === "ArrowFunctionExpression")) {
+                    if (IGNORE_CONSTRUCTORS && node.key.type === "Identifier" && isConstructor(node.key.name)) {
+                        return;
+                    }
+
+                    if (METHODS_IGNORE_PATTERN) {
+                        const propertyName = astUtils.getStaticPropertyName(node);
+
+                        if (propertyName !== null && METHODS_IGNORE_PATTERN.test(propertyName)) {
+                            return;
+                        }
+                    }
+
+                    if (AVOID_QUOTES && isStringLiteral(node.key)) {
+                        return;
+                    }
+
+                    // {[x]: function(){}} should be written as {[x]() {}}
+                    if (node.value.type === "FunctionExpression" ||
+                        node.value.type === "ArrowFunctionExpression" &&
+                        node.value.body.type === "BlockStatement" &&
+                        AVOID_EXPLICIT_RETURN_ARROWS &&
+                        !arrowsWithLexicalIdentifiers.has(node.value)
+                    ) {
+                        context.report({
+                            node,
+                            messageId: "expectedMethodShorthand",
+                            fix: fixer => makeFunctionShorthand(fixer, node)
+                        });
+                    }
+                } else if (node.value.type === "Identifier" && node.key.name === node.value.name && APPLY_TO_PROPS) {
+
+                    // {x: x} should be written as {x}
+                    context.report({
+                        node,
+                        messageId: "expectedPropertyShorthand",
+                        fix(fixer) {
+                            return fixer.replaceText(node, node.value.name);
+                        }
+                    });
+                } else if (node.value.type === "Identifier" && node.key.type === "Literal" && node.key.value === node.value.name && APPLY_TO_PROPS) {
+                    if (AVOID_QUOTES) {
+                        return;
+                    }
+
+                    // {"x": x} should be written as {x}
+                    context.report({
+                        node,
+                        messageId: "expectedPropertyShorthand",
+                        fix(fixer) {
+                            return fixer.replaceText(node, node.value.name);
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/one-var-declaration-per-line.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/one-var-declaration-per-line.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/one-var-declaration-per-line.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,95 @@
+/**
+ * @fileoverview Rule to check multiple var declarations per line
+ * @author Alberto Rodríguez
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "suggestion",
+
+        docs: {
+            description: "Require or disallow newlines around variable declarations",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/one-var-declaration-per-line"
+        },
+
+        schema: [
+            {
+                enum: ["always", "initializations"]
+            }
+        ],
+
+        fixable: "whitespace",
+
+        messages: {
+            expectVarOnNewline: "Expected variable declaration to be on a new line."
+        }
+    },
+
+    create(context) {
+
+        const always = context.options[0] === "always";
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+
+        /**
+         * Determine if provided keyword is a variant of for specifiers
+         * @private
+         * @param {string} keyword keyword to test
+         * @returns {boolean} True if `keyword` is a variant of for specifier
+         */
+        function isForTypeSpecifier(keyword) {
+            return keyword === "ForStatement" || keyword === "ForInStatement" || keyword === "ForOfStatement";
+        }
+
+        /**
+         * Checks newlines around variable declarations.
+         * @private
+         * @param {ASTNode} node `VariableDeclaration` node to test
+         * @returns {void}
+         */
+        function checkForNewLine(node) {
+            if (isForTypeSpecifier(node.parent.type)) {
+                return;
+            }
+
+            const declarations = node.declarations;
+            let prev;
+
+            declarations.forEach(current => {
+                if (prev && prev.loc.end.line === current.loc.start.line) {
+                    if (always || prev.init || current.init) {
+                        context.report({
+                            node,
+                            messageId: "expectVarOnNewline",
+                            loc: current.loc,
+                            fix: fixer => fixer.insertTextBefore(current, "\n")
+                        });
+                    }
+                }
+                prev = current;
+            });
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            VariableDeclaration: checkForNewLine
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/one-var.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/one-var.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/one-var.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,567 @@
+/**
+ * @fileoverview A rule to control the use of single variable declarations.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines whether the given node is in a statement list.
+ * @param {ASTNode} node node to check
+ * @returns {boolean} `true` if the given node is in a statement list
+ */
+function isInStatementList(node) {
+    return astUtils.STATEMENT_LIST_PARENTS.has(node.parent.type);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce variables to be declared either together or separately in functions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/one-var"
+        },
+
+        fixable: "code",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["always", "never", "consecutive"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            separateRequires: {
+                                type: "boolean"
+                            },
+                            var: {
+                                enum: ["always", "never", "consecutive"]
+                            },
+                            let: {
+                                enum: ["always", "never", "consecutive"]
+                            },
+                            const: {
+                                enum: ["always", "never", "consecutive"]
+                            }
+                        },
+                        additionalProperties: false
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            initialized: {
+                                enum: ["always", "never", "consecutive"]
+                            },
+                            uninitialized: {
+                                enum: ["always", "never", "consecutive"]
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            combineUninitialized: "Combine this with the previous '{{type}}' statement with uninitialized variables.",
+            combineInitialized: "Combine this with the previous '{{type}}' statement with initialized variables.",
+            splitUninitialized: "Split uninitialized '{{type}}' declarations into multiple statements.",
+            splitInitialized: "Split initialized '{{type}}' declarations into multiple statements.",
+            splitRequires: "Split requires to be separated into a single block.",
+            combine: "Combine this with the previous '{{type}}' statement.",
+            split: "Split '{{type}}' declarations into multiple statements."
+        }
+    },
+
+    create(context) {
+        const MODE_ALWAYS = "always";
+        const MODE_NEVER = "never";
+        const MODE_CONSECUTIVE = "consecutive";
+        const mode = context.options[0] || MODE_ALWAYS;
+
+        const options = {};
+
+        if (typeof mode === "string") { // simple options configuration with just a string
+            options.var = { uninitialized: mode, initialized: mode };
+            options.let = { uninitialized: mode, initialized: mode };
+            options.const = { uninitialized: mode, initialized: mode };
+        } else if (typeof mode === "object") { // options configuration is an object
+            options.separateRequires = !!mode.separateRequires;
+            options.var = { uninitialized: mode.var, initialized: mode.var };
+            options.let = { uninitialized: mode.let, initialized: mode.let };
+            options.const = { uninitialized: mode.const, initialized: mode.const };
+            if (Object.prototype.hasOwnProperty.call(mode, "uninitialized")) {
+                options.var.uninitialized = mode.uninitialized;
+                options.let.uninitialized = mode.uninitialized;
+                options.const.uninitialized = mode.uninitialized;
+            }
+            if (Object.prototype.hasOwnProperty.call(mode, "initialized")) {
+                options.var.initialized = mode.initialized;
+                options.let.initialized = mode.initialized;
+                options.const.initialized = mode.initialized;
+            }
+        }
+
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        const functionStack = [];
+        const blockStack = [];
+
+        /**
+         * Increments the blockStack counter.
+         * @returns {void}
+         * @private
+         */
+        function startBlock() {
+            blockStack.push({
+                let: { initialized: false, uninitialized: false },
+                const: { initialized: false, uninitialized: false }
+            });
+        }
+
+        /**
+         * Increments the functionStack counter.
+         * @returns {void}
+         * @private
+         */
+        function startFunction() {
+            functionStack.push({ initialized: false, uninitialized: false });
+            startBlock();
+        }
+
+        /**
+         * Decrements the blockStack counter.
+         * @returns {void}
+         * @private
+         */
+        function endBlock() {
+            blockStack.pop();
+        }
+
+        /**
+         * Decrements the functionStack counter.
+         * @returns {void}
+         * @private
+         */
+        function endFunction() {
+            functionStack.pop();
+            endBlock();
+        }
+
+        /**
+         * Check if a variable declaration is a require.
+         * @param {ASTNode} decl variable declaration Node
+         * @returns {bool} if decl is a require, return true; else return false.
+         * @private
+         */
+        function isRequire(decl) {
+            return decl.init && decl.init.type === "CallExpression" && decl.init.callee.name === "require";
+        }
+
+        /**
+         * Records whether initialized/uninitialized/required variables are defined in current scope.
+         * @param {string} statementType node.kind, one of: "var", "let", or "const"
+         * @param {ASTNode[]} declarations List of declarations
+         * @param {Object} currentScope The scope being investigated
+         * @returns {void}
+         * @private
+         */
+        function recordTypes(statementType, declarations, currentScope) {
+            for (let i = 0; i < declarations.length; i++) {
+                if (declarations[i].init === null) {
+                    if (options[statementType] && options[statementType].uninitialized === MODE_ALWAYS) {
+                        currentScope.uninitialized = true;
+                    }
+                } else {
+                    if (options[statementType] && options[statementType].initialized === MODE_ALWAYS) {
+                        if (options.separateRequires && isRequire(declarations[i])) {
+                            currentScope.required = true;
+                        } else {
+                            currentScope.initialized = true;
+                        }
+                    }
+                }
+            }
+        }
+
+        /**
+         * Determines the current scope (function or block)
+         * @param {string} statementType node.kind, one of: "var", "let", or "const"
+         * @returns {Object} The scope associated with statementType
+         */
+        function getCurrentScope(statementType) {
+            let currentScope;
+
+            if (statementType === "var") {
+                currentScope = functionStack[functionStack.length - 1];
+            } else if (statementType === "let") {
+                currentScope = blockStack[blockStack.length - 1].let;
+            } else if (statementType === "const") {
+                currentScope = blockStack[blockStack.length - 1].const;
+            }
+            return currentScope;
+        }
+
+        /**
+         * Counts the number of initialized and uninitialized declarations in a list of declarations
+         * @param {ASTNode[]} declarations List of declarations
+         * @returns {Object} Counts of 'uninitialized' and 'initialized' declarations
+         * @private
+         */
+        function countDeclarations(declarations) {
+            const counts = { uninitialized: 0, initialized: 0 };
+
+            for (let i = 0; i < declarations.length; i++) {
+                if (declarations[i].init === null) {
+                    counts.uninitialized++;
+                } else {
+                    counts.initialized++;
+                }
+            }
+            return counts;
+        }
+
+        /**
+         * Determines if there is more than one var statement in the current scope.
+         * @param {string} statementType node.kind, one of: "var", "let", or "const"
+         * @param {ASTNode[]} declarations List of declarations
+         * @returns {boolean} Returns true if it is the first var declaration, false if not.
+         * @private
+         */
+        function hasOnlyOneStatement(statementType, declarations) {
+
+            const declarationCounts = countDeclarations(declarations);
+            const currentOptions = options[statementType] || {};
+            const currentScope = getCurrentScope(statementType);
+            const hasRequires = declarations.some(isRequire);
+
+            if (currentOptions.uninitialized === MODE_ALWAYS && currentOptions.initialized === MODE_ALWAYS) {
+                if (currentScope.uninitialized || currentScope.initialized) {
+                    if (!hasRequires) {
+                        return false;
+                    }
+                }
+            }
+
+            if (declarationCounts.uninitialized > 0) {
+                if (currentOptions.uninitialized === MODE_ALWAYS && currentScope.uninitialized) {
+                    return false;
+                }
+            }
+            if (declarationCounts.initialized > 0) {
+                if (currentOptions.initialized === MODE_ALWAYS && currentScope.initialized) {
+                    if (!hasRequires) {
+                        return false;
+                    }
+                }
+            }
+            if (currentScope.required && hasRequires) {
+                return false;
+            }
+            recordTypes(statementType, declarations, currentScope);
+            return true;
+        }
+
+        /**
+         * Fixer to join VariableDeclaration's into a single declaration
+         * @param {VariableDeclarator[]} declarations The `VariableDeclaration` to join
+         * @returns {Function} The fixer function
+         */
+        function joinDeclarations(declarations) {
+            const declaration = declarations[0];
+            const body = Array.isArray(declaration.parent.parent.body) ? declaration.parent.parent.body : [];
+            const currentIndex = body.findIndex(node => node.range[0] === declaration.parent.range[0]);
+            const previousNode = body[currentIndex - 1];
+
+            return fixer => {
+                const type = sourceCode.getTokenBefore(declaration);
+                const prevSemi = sourceCode.getTokenBefore(type);
+                const res = [];
+
+                if (previousNode && previousNode.kind === sourceCode.getText(type)) {
+                    if (prevSemi.value === ";") {
+                        res.push(fixer.replaceText(prevSemi, ","));
+                    } else {
+                        res.push(fixer.insertTextAfter(prevSemi, ","));
+                    }
+                    res.push(fixer.replaceText(type, ""));
+                }
+
+                return res;
+            };
+        }
+
+        /**
+         * Fixer to split a VariableDeclaration into individual declarations
+         * @param {VariableDeclaration} declaration The `VariableDeclaration` to split
+         * @returns {Function|null} The fixer function
+         */
+        function splitDeclarations(declaration) {
+            const { parent } = declaration;
+
+            // don't autofix code such as: if (foo) var x, y;
+            if (!isInStatementList(parent.type === "ExportNamedDeclaration" ? parent : declaration)) {
+                return null;
+            }
+
+            return fixer => declaration.declarations.map(declarator => {
+                const tokenAfterDeclarator = sourceCode.getTokenAfter(declarator);
+
+                if (tokenAfterDeclarator === null) {
+                    return null;
+                }
+
+                const afterComma = sourceCode.getTokenAfter(tokenAfterDeclarator, { includeComments: true });
+
+                if (tokenAfterDeclarator.value !== ",") {
+                    return null;
+                }
+
+                const exportPlacement = declaration.parent.type === "ExportNamedDeclaration" ? "export " : "";
+
+                /*
+                 * `var x,y`
+                 * tokenAfterDeclarator ^^ afterComma
+                 */
+                if (afterComma.range[0] === tokenAfterDeclarator.range[1]) {
+                    return fixer.replaceText(tokenAfterDeclarator, `; ${exportPlacement}${declaration.kind} `);
+                }
+
+                /*
+                 * `var x,
+                 * tokenAfterDeclarator ^
+                 *      y`
+                 *      ^ afterComma
+                 */
+                if (
+                    afterComma.loc.start.line > tokenAfterDeclarator.loc.end.line ||
+                    afterComma.type === "Line" ||
+                    afterComma.type === "Block"
+                ) {
+                    let lastComment = afterComma;
+
+                    while (lastComment.type === "Line" || lastComment.type === "Block") {
+                        lastComment = sourceCode.getTokenAfter(lastComment, { includeComments: true });
+                    }
+
+                    return fixer.replaceTextRange(
+                        [tokenAfterDeclarator.range[0], lastComment.range[0]],
+                        `;${sourceCode.text.slice(tokenAfterDeclarator.range[1], lastComment.range[0])}${exportPlacement}${declaration.kind} `
+                    );
+                }
+
+                return fixer.replaceText(tokenAfterDeclarator, `; ${exportPlacement}${declaration.kind}`);
+            }).filter(x => x);
+        }
+
+        /**
+         * Checks a given VariableDeclaration node for errors.
+         * @param {ASTNode} node The VariableDeclaration node to check
+         * @returns {void}
+         * @private
+         */
+        function checkVariableDeclaration(node) {
+            const parent = node.parent;
+            const type = node.kind;
+
+            if (!options[type]) {
+                return;
+            }
+
+            const declarations = node.declarations;
+            const declarationCounts = countDeclarations(declarations);
+            const mixedRequires = declarations.some(isRequire) && !declarations.every(isRequire);
+
+            if (options[type].initialized === MODE_ALWAYS) {
+                if (options.separateRequires && mixedRequires) {
+                    context.report({
+                        node,
+                        messageId: "splitRequires"
+                    });
+                }
+            }
+
+            // consecutive
+            const nodeIndex = (parent.body && parent.body.length > 0 && parent.body.indexOf(node)) || 0;
+
+            if (nodeIndex > 0) {
+                const previousNode = parent.body[nodeIndex - 1];
+                const isPreviousNodeDeclaration = previousNode.type === "VariableDeclaration";
+                const declarationsWithPrevious = declarations.concat(previousNode.declarations || []);
+
+                if (
+                    isPreviousNodeDeclaration &&
+                    previousNode.kind === type &&
+                    !(declarationsWithPrevious.some(isRequire) && !declarationsWithPrevious.every(isRequire))
+                ) {
+                    const previousDeclCounts = countDeclarations(previousNode.declarations);
+
+                    if (options[type].initialized === MODE_CONSECUTIVE && options[type].uninitialized === MODE_CONSECUTIVE) {
+                        context.report({
+                            node,
+                            messageId: "combine",
+                            data: {
+                                type
+                            },
+                            fix: joinDeclarations(declarations)
+                        });
+                    } else if (options[type].initialized === MODE_CONSECUTIVE && declarationCounts.initialized > 0 && previousDeclCounts.initialized > 0) {
+                        context.report({
+                            node,
+                            messageId: "combineInitialized",
+                            data: {
+                                type
+                            },
+                            fix: joinDeclarations(declarations)
+                        });
+                    } else if (options[type].uninitialized === MODE_CONSECUTIVE &&
+                            declarationCounts.uninitialized > 0 &&
+                            previousDeclCounts.uninitialized > 0) {
+                        context.report({
+                            node,
+                            messageId: "combineUninitialized",
+                            data: {
+                                type
+                            },
+                            fix: joinDeclarations(declarations)
+                        });
+                    }
+                }
+            }
+
+            // always
+            if (!hasOnlyOneStatement(type, declarations)) {
+                if (options[type].initialized === MODE_ALWAYS && options[type].uninitialized === MODE_ALWAYS) {
+                    context.report({
+                        node,
+                        messageId: "combine",
+                        data: {
+                            type
+                        },
+                        fix: joinDeclarations(declarations)
+                    });
+                } else {
+                    if (options[type].initialized === MODE_ALWAYS && declarationCounts.initialized > 0) {
+                        context.report({
+                            node,
+                            messageId: "combineInitialized",
+                            data: {
+                                type
+                            },
+                            fix: joinDeclarations(declarations)
+                        });
+                    }
+                    if (options[type].uninitialized === MODE_ALWAYS && declarationCounts.uninitialized > 0) {
+                        if (node.parent.left === node && (node.parent.type === "ForInStatement" || node.parent.type === "ForOfStatement")) {
+                            return;
+                        }
+                        context.report({
+                            node,
+                            messageId: "combineUninitialized",
+                            data: {
+                                type
+                            },
+                            fix: joinDeclarations(declarations)
+                        });
+                    }
+                }
+            }
+
+            // never
+            if (parent.type !== "ForStatement" || parent.init !== node) {
+                const totalDeclarations = declarationCounts.uninitialized + declarationCounts.initialized;
+
+                if (totalDeclarations > 1) {
+                    if (options[type].initialized === MODE_NEVER && options[type].uninitialized === MODE_NEVER) {
+
+                        // both initialized and uninitialized
+                        context.report({
+                            node,
+                            messageId: "split",
+                            data: {
+                                type
+                            },
+                            fix: splitDeclarations(node)
+                        });
+                    } else if (options[type].initialized === MODE_NEVER && declarationCounts.initialized > 0) {
+
+                        // initialized
+                        context.report({
+                            node,
+                            messageId: "splitInitialized",
+                            data: {
+                                type
+                            },
+                            fix: splitDeclarations(node)
+                        });
+                    } else if (options[type].uninitialized === MODE_NEVER && declarationCounts.uninitialized > 0) {
+
+                        // uninitialized
+                        context.report({
+                            node,
+                            messageId: "splitUninitialized",
+                            data: {
+                                type
+                            },
+                            fix: splitDeclarations(node)
+                        });
+                    }
+                }
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: startFunction,
+            FunctionDeclaration: startFunction,
+            FunctionExpression: startFunction,
+            ArrowFunctionExpression: startFunction,
+            StaticBlock: startFunction, // StaticBlock creates a new scope for `var` variables
+
+            BlockStatement: startBlock,
+            ForStatement: startBlock,
+            ForInStatement: startBlock,
+            ForOfStatement: startBlock,
+            SwitchStatement: startBlock,
+            VariableDeclaration: checkVariableDeclaration,
+            "ForStatement:exit": endBlock,
+            "ForOfStatement:exit": endBlock,
+            "ForInStatement:exit": endBlock,
+            "SwitchStatement:exit": endBlock,
+            "BlockStatement:exit": endBlock,
+
+            "Program:exit": endFunction,
+            "FunctionDeclaration:exit": endFunction,
+            "FunctionExpression:exit": endFunction,
+            "ArrowFunctionExpression:exit": endFunction,
+            "StaticBlock:exit": endFunction
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/operator-assignment.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/operator-assignment.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/operator-assignment.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,209 @@
+/**
+ * @fileoverview Rule to replace assignment expressions with operator assignment
+ * @author Brandon Mills
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether an operator is commutative and has an operator assignment
+ * shorthand form.
+ * @param {string} operator Operator to check.
+ * @returns {boolean} True if the operator is commutative and has a
+ *     shorthand form.
+ */
+function isCommutativeOperatorWithShorthand(operator) {
+    return ["*", "&", "^", "|"].includes(operator);
+}
+
+/**
+ * Checks whether an operator is not commutative and has an operator assignment
+ * shorthand form.
+ * @param {string} operator Operator to check.
+ * @returns {boolean} True if the operator is not commutative and has
+ *     a shorthand form.
+ */
+function isNonCommutativeOperatorWithShorthand(operator) {
+    return ["+", "-", "/", "%", "<<", ">>", ">>>", "**"].includes(operator);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/**
+ * Determines if the left side of a node can be safely fixed (i.e. if it activates the same getters/setters and)
+ * toString calls regardless of whether assignment shorthand is used)
+ * @param {ASTNode} node The node on the left side of the expression
+ * @returns {boolean} `true` if the node can be fixed
+ */
+function canBeFixed(node) {
+    return (
+        node.type === "Identifier" ||
+        (
+            node.type === "MemberExpression" &&
+            (node.object.type === "Identifier" || node.object.type === "ThisExpression") &&
+            (!node.computed || node.property.type === "Literal")
+        )
+    );
+}
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require or disallow assignment operator shorthand where possible",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/operator-assignment"
+        },
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            }
+        ],
+
+        fixable: "code",
+        messages: {
+            replaced: "Assignment (=) can be replaced with operator assignment ({{operator}}).",
+            unexpected: "Unexpected operator assignment ({{operator}}) shorthand."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Returns the operator token of an AssignmentExpression or BinaryExpression
+         * @param {ASTNode} node An AssignmentExpression or BinaryExpression node
+         * @returns {Token} The operator token in the node
+         */
+        function getOperatorToken(node) {
+            return sourceCode.getFirstTokenBetween(node.left, node.right, token => token.value === node.operator);
+        }
+
+        /**
+         * Ensures that an assignment uses the shorthand form where possible.
+         * @param {ASTNode} node An AssignmentExpression node.
+         * @returns {void}
+         */
+        function verify(node) {
+            if (node.operator !== "=" || node.right.type !== "BinaryExpression") {
+                return;
+            }
+
+            const left = node.left;
+            const expr = node.right;
+            const operator = expr.operator;
+
+            if (isCommutativeOperatorWithShorthand(operator) || isNonCommutativeOperatorWithShorthand(operator)) {
+                const replacementOperator = `${operator}=`;
+
+                if (astUtils.isSameReference(left, expr.left, true)) {
+                    context.report({
+                        node,
+                        messageId: "replaced",
+                        data: { operator: replacementOperator },
+                        fix(fixer) {
+                            if (canBeFixed(left) && canBeFixed(expr.left)) {
+                                const equalsToken = getOperatorToken(node);
+                                const operatorToken = getOperatorToken(expr);
+                                const leftText = sourceCode.getText().slice(node.range[0], equalsToken.range[0]);
+                                const rightText = sourceCode.getText().slice(operatorToken.range[1], node.right.range[1]);
+
+                                // Check for comments that would be removed.
+                                if (sourceCode.commentsExistBetween(equalsToken, operatorToken)) {
+                                    return null;
+                                }
+
+                                return fixer.replaceText(node, `${leftText}${replacementOperator}${rightText}`);
+                            }
+                            return null;
+                        }
+                    });
+                } else if (astUtils.isSameReference(left, expr.right, true) && isCommutativeOperatorWithShorthand(operator)) {
+
+                    /*
+                     * This case can't be fixed safely.
+                     * If `a` and `b` both have custom valueOf() behavior, then fixing `a = b * a` to `a *= b` would
+                     * change the execution order of the valueOf() functions.
+                     */
+                    context.report({
+                        node,
+                        messageId: "replaced",
+                        data: { operator: replacementOperator }
+                    });
+                }
+            }
+        }
+
+        /**
+         * Warns if an assignment expression uses operator assignment shorthand.
+         * @param {ASTNode} node An AssignmentExpression node.
+         * @returns {void}
+         */
+        function prohibit(node) {
+            if (node.operator !== "=" && !astUtils.isLogicalAssignmentOperator(node.operator)) {
+                context.report({
+                    node,
+                    messageId: "unexpected",
+                    data: { operator: node.operator },
+                    fix(fixer) {
+                        if (canBeFixed(node.left)) {
+                            const firstToken = sourceCode.getFirstToken(node);
+                            const operatorToken = getOperatorToken(node);
+                            const leftText = sourceCode.getText().slice(node.range[0], operatorToken.range[0]);
+                            const newOperator = node.operator.slice(0, -1);
+                            let rightText;
+
+                            // Check for comments that would be duplicated.
+                            if (sourceCode.commentsExistBetween(firstToken, operatorToken)) {
+                                return null;
+                            }
+
+                            // If this change would modify precedence (e.g. `foo *= bar + 1` => `foo = foo * (bar + 1)`), parenthesize the right side.
+                            if (
+                                astUtils.getPrecedence(node.right) <= astUtils.getPrecedence({ type: "BinaryExpression", operator: newOperator }) &&
+                                !astUtils.isParenthesised(sourceCode, node.right)
+                            ) {
+                                rightText = `${sourceCode.text.slice(operatorToken.range[1], node.right.range[0])}(${sourceCode.getText(node.right)})`;
+                            } else {
+                                const tokenAfterOperator = sourceCode.getTokenAfter(operatorToken, { includeComments: true });
+                                let rightTextPrefix = "";
+
+                                if (
+                                    operatorToken.range[1] === tokenAfterOperator.range[0] &&
+                                    !astUtils.canTokensBeAdjacent({ type: "Punctuator", value: newOperator }, tokenAfterOperator)
+                                ) {
+                                    rightTextPrefix = " "; // foo+=+bar -> foo= foo+ +bar
+                                }
+
+                                rightText = `${rightTextPrefix}${sourceCode.text.slice(operatorToken.range[1], node.range[1])}`;
+                            }
+
+                            return fixer.replaceText(node, `${leftText}= ${leftText}${newOperator}${rightText}`);
+                        }
+                        return null;
+                    }
+                });
+            }
+        }
+
+        return {
+            AssignmentExpression: context.options[0] !== "never" ? verify : prohibit
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/operator-linebreak.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/operator-linebreak.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/operator-linebreak.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,253 @@
+/**
+ * @fileoverview Operator linebreak - enforces operator linebreak style of two types: after and before
+ * @author Benoît Zugmeyer
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent linebreak style for operators",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/operator-linebreak"
+        },
+
+        schema: [
+            {
+                enum: ["after", "before", "none", null]
+            },
+            {
+                type: "object",
+                properties: {
+                    overrides: {
+                        type: "object",
+                        additionalProperties: {
+                            enum: ["after", "before", "none", "ignore"]
+                        }
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "code",
+
+        messages: {
+            operatorAtBeginning: "'{{operator}}' should be placed at the beginning of the line.",
+            operatorAtEnd: "'{{operator}}' should be placed at the end of the line.",
+            badLinebreak: "Bad line breaking before and after '{{operator}}'.",
+            noLinebreak: "There should be no line break before or after '{{operator}}'."
+        }
+    },
+
+    create(context) {
+
+        const usedDefaultGlobal = !context.options[0];
+        const globalStyle = context.options[0] || "after";
+        const options = context.options[1] || {};
+        const styleOverrides = options.overrides ? Object.assign({}, options.overrides) : {};
+
+        if (usedDefaultGlobal && !styleOverrides["?"]) {
+            styleOverrides["?"] = "before";
+        }
+
+        if (usedDefaultGlobal && !styleOverrides[":"]) {
+            styleOverrides[":"] = "before";
+        }
+
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Gets a fixer function to fix rule issues
+         * @param {Token} operatorToken The operator token of an expression
+         * @param {string} desiredStyle The style for the rule. One of 'before', 'after', 'none'
+         * @returns {Function} A fixer function
+         */
+        function getFixer(operatorToken, desiredStyle) {
+            return fixer => {
+                const tokenBefore = sourceCode.getTokenBefore(operatorToken);
+                const tokenAfter = sourceCode.getTokenAfter(operatorToken);
+                const textBefore = sourceCode.text.slice(tokenBefore.range[1], operatorToken.range[0]);
+                const textAfter = sourceCode.text.slice(operatorToken.range[1], tokenAfter.range[0]);
+                const hasLinebreakBefore = !astUtils.isTokenOnSameLine(tokenBefore, operatorToken);
+                const hasLinebreakAfter = !astUtils.isTokenOnSameLine(operatorToken, tokenAfter);
+                let newTextBefore, newTextAfter;
+
+                if (hasLinebreakBefore !== hasLinebreakAfter && desiredStyle !== "none") {
+
+                    // If there is a comment before and after the operator, don't do a fix.
+                    if (sourceCode.getTokenBefore(operatorToken, { includeComments: true }) !== tokenBefore &&
+                        sourceCode.getTokenAfter(operatorToken, { includeComments: true }) !== tokenAfter) {
+
+                        return null;
+                    }
+
+                    /*
+                     * If there is only one linebreak and it's on the wrong side of the operator, swap the text before and after the operator.
+                     * foo &&
+                     *           bar
+                     * would get fixed to
+                     * foo
+                     *        && bar
+                     */
+                    newTextBefore = textAfter;
+                    newTextAfter = textBefore;
+                } else {
+                    const LINEBREAK_REGEX = astUtils.createGlobalLinebreakMatcher();
+
+                    // Otherwise, if no linebreak is desired and no comments interfere, replace the linebreaks with empty strings.
+                    newTextBefore = desiredStyle === "before" || textBefore.trim() ? textBefore : textBefore.replace(LINEBREAK_REGEX, "");
+                    newTextAfter = desiredStyle === "after" || textAfter.trim() ? textAfter : textAfter.replace(LINEBREAK_REGEX, "");
+
+                    // If there was no change (due to interfering comments), don't output a fix.
+                    if (newTextBefore === textBefore && newTextAfter === textAfter) {
+                        return null;
+                    }
+                }
+
+                if (newTextAfter === "" && tokenAfter.type === "Punctuator" && "+-".includes(operatorToken.value) && tokenAfter.value === operatorToken.value) {
+
+                    // To avoid accidentally creating a ++ or -- operator, insert a space if the operator is a +/- and the following token is a unary +/-.
+                    newTextAfter += " ";
+                }
+
+                return fixer.replaceTextRange([tokenBefore.range[1], tokenAfter.range[0]], newTextBefore + operatorToken.value + newTextAfter);
+            };
+        }
+
+        /**
+         * Checks the operator placement
+         * @param {ASTNode} node The node to check
+         * @param {ASTNode} rightSide The node that comes after the operator in `node`
+         * @param {string} operator The operator
+         * @private
+         * @returns {void}
+         */
+        function validateNode(node, rightSide, operator) {
+
+            /*
+             * Find the operator token by searching from the right side, because between the left side and the operator
+             * there could be additional tokens from type annotations. Search specifically for the token which
+             * value equals the operator, in order to skip possible opening parentheses before the right side node.
+             */
+            const operatorToken = sourceCode.getTokenBefore(rightSide, token => token.value === operator);
+            const leftToken = sourceCode.getTokenBefore(operatorToken);
+            const rightToken = sourceCode.getTokenAfter(operatorToken);
+            const operatorStyleOverride = styleOverrides[operator];
+            const style = operatorStyleOverride || globalStyle;
+            const fix = getFixer(operatorToken, style);
+
+            // if single line
+            if (astUtils.isTokenOnSameLine(leftToken, operatorToken) &&
+                    astUtils.isTokenOnSameLine(operatorToken, rightToken)) {
+
+                // do nothing.
+
+            } else if (operatorStyleOverride !== "ignore" && !astUtils.isTokenOnSameLine(leftToken, operatorToken) &&
+                    !astUtils.isTokenOnSameLine(operatorToken, rightToken)) {
+
+                // lone operator
+                context.report({
+                    node,
+                    loc: operatorToken.loc,
+                    messageId: "badLinebreak",
+                    data: {
+                        operator
+                    },
+                    fix
+                });
+
+            } else if (style === "before" && astUtils.isTokenOnSameLine(leftToken, operatorToken)) {
+
+                context.report({
+                    node,
+                    loc: operatorToken.loc,
+                    messageId: "operatorAtBeginning",
+                    data: {
+                        operator
+                    },
+                    fix
+                });
+
+            } else if (style === "after" && astUtils.isTokenOnSameLine(operatorToken, rightToken)) {
+
+                context.report({
+                    node,
+                    loc: operatorToken.loc,
+                    messageId: "operatorAtEnd",
+                    data: {
+                        operator
+                    },
+                    fix
+                });
+
+            } else if (style === "none") {
+
+                context.report({
+                    node,
+                    loc: operatorToken.loc,
+                    messageId: "noLinebreak",
+                    data: {
+                        operator
+                    },
+                    fix
+                });
+
+            }
+        }
+
+        /**
+         * Validates a binary expression using `validateNode`
+         * @param {BinaryExpression|LogicalExpression|AssignmentExpression} node node to be validated
+         * @returns {void}
+         */
+        function validateBinaryExpression(node) {
+            validateNode(node, node.right, node.operator);
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            BinaryExpression: validateBinaryExpression,
+            LogicalExpression: validateBinaryExpression,
+            AssignmentExpression: validateBinaryExpression,
+            VariableDeclarator(node) {
+                if (node.init) {
+                    validateNode(node, node.init, "=");
+                }
+            },
+            PropertyDefinition(node) {
+                if (node.value) {
+                    validateNode(node, node.value, "=");
+                }
+            },
+            ConditionalExpression(node) {
+                validateNode(node, node.consequent, "?");
+                validateNode(node, node.alternate, ":");
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/padded-blocks.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/padded-blocks.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/padded-blocks.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,310 @@
+/**
+ * @fileoverview A rule to ensure blank lines within blocks.
+ * @author Mathias Schreck <https://github.com/lo1tuma>
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require or disallow padding within blocks",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/padded-blocks"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["always", "never"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            blocks: {
+                                enum: ["always", "never"]
+                            },
+                            switches: {
+                                enum: ["always", "never"]
+                            },
+                            classes: {
+                                enum: ["always", "never"]
+                            }
+                        },
+                        additionalProperties: false,
+                        minProperties: 1
+                    }
+                ]
+            },
+            {
+                type: "object",
+                properties: {
+                    allowSingleLineBlocks: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            alwaysPadBlock: "Block must be padded by blank lines.",
+            neverPadBlock: "Block must not be padded by blank lines."
+        }
+    },
+
+    create(context) {
+        const options = {};
+        const typeOptions = context.options[0] || "always";
+        const exceptOptions = context.options[1] || {};
+
+        if (typeof typeOptions === "string") {
+            const shouldHavePadding = typeOptions === "always";
+
+            options.blocks = shouldHavePadding;
+            options.switches = shouldHavePadding;
+            options.classes = shouldHavePadding;
+        } else {
+            if (Object.prototype.hasOwnProperty.call(typeOptions, "blocks")) {
+                options.blocks = typeOptions.blocks === "always";
+            }
+            if (Object.prototype.hasOwnProperty.call(typeOptions, "switches")) {
+                options.switches = typeOptions.switches === "always";
+            }
+            if (Object.prototype.hasOwnProperty.call(typeOptions, "classes")) {
+                options.classes = typeOptions.classes === "always";
+            }
+        }
+
+        if (Object.prototype.hasOwnProperty.call(exceptOptions, "allowSingleLineBlocks")) {
+            options.allowSingleLineBlocks = exceptOptions.allowSingleLineBlocks === true;
+        }
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Gets the open brace token from a given node.
+         * @param {ASTNode} node A BlockStatement or SwitchStatement node from which to get the open brace.
+         * @returns {Token} The token of the open brace.
+         */
+        function getOpenBrace(node) {
+            if (node.type === "SwitchStatement") {
+                return sourceCode.getTokenBefore(node.cases[0]);
+            }
+
+            if (node.type === "StaticBlock") {
+                return sourceCode.getFirstToken(node, { skip: 1 }); // skip the `static` token
+            }
+
+            // `BlockStatement` or `ClassBody`
+            return sourceCode.getFirstToken(node);
+        }
+
+        /**
+         * Checks if the given parameter is a comment node
+         * @param {ASTNode|Token} node An AST node or token
+         * @returns {boolean} True if node is a comment
+         */
+        function isComment(node) {
+            return node.type === "Line" || node.type === "Block";
+        }
+
+        /**
+         * Checks if there is padding between two tokens
+         * @param {Token} first The first token
+         * @param {Token} second The second token
+         * @returns {boolean} True if there is at least a line between the tokens
+         */
+        function isPaddingBetweenTokens(first, second) {
+            return second.loc.start.line - first.loc.end.line >= 2;
+        }
+
+
+        /**
+         * Checks if the given token has a blank line after it.
+         * @param {Token} token The token to check.
+         * @returns {boolean} Whether or not the token is followed by a blank line.
+         */
+        function getFirstBlockToken(token) {
+            let prev,
+                first = token;
+
+            do {
+                prev = first;
+                first = sourceCode.getTokenAfter(first, { includeComments: true });
+            } while (isComment(first) && first.loc.start.line === prev.loc.end.line);
+
+            return first;
+        }
+
+        /**
+         * Checks if the given token is preceded by a blank line.
+         * @param {Token} token The token to check
+         * @returns {boolean} Whether or not the token is preceded by a blank line
+         */
+        function getLastBlockToken(token) {
+            let last = token,
+                next;
+
+            do {
+                next = last;
+                last = sourceCode.getTokenBefore(last, { includeComments: true });
+            } while (isComment(last) && last.loc.end.line === next.loc.start.line);
+
+            return last;
+        }
+
+        /**
+         * Checks if a node should be padded, according to the rule config.
+         * @param {ASTNode} node The AST node to check.
+         * @throws {Error} (Unreachable)
+         * @returns {boolean} True if the node should be padded, false otherwise.
+         */
+        function requirePaddingFor(node) {
+            switch (node.type) {
+                case "BlockStatement":
+                case "StaticBlock":
+                    return options.blocks;
+                case "SwitchStatement":
+                    return options.switches;
+                case "ClassBody":
+                    return options.classes;
+
+                /* c8 ignore next */
+                default:
+                    throw new Error("unreachable");
+            }
+        }
+
+        /**
+         * Checks the given BlockStatement node to be padded if the block is not empty.
+         * @param {ASTNode} node The AST node of a BlockStatement.
+         * @returns {void} undefined.
+         */
+        function checkPadding(node) {
+            const openBrace = getOpenBrace(node),
+                firstBlockToken = getFirstBlockToken(openBrace),
+                tokenBeforeFirst = sourceCode.getTokenBefore(firstBlockToken, { includeComments: true }),
+                closeBrace = sourceCode.getLastToken(node),
+                lastBlockToken = getLastBlockToken(closeBrace),
+                tokenAfterLast = sourceCode.getTokenAfter(lastBlockToken, { includeComments: true }),
+                blockHasTopPadding = isPaddingBetweenTokens(tokenBeforeFirst, firstBlockToken),
+                blockHasBottomPadding = isPaddingBetweenTokens(lastBlockToken, tokenAfterLast);
+
+            if (options.allowSingleLineBlocks && astUtils.isTokenOnSameLine(tokenBeforeFirst, tokenAfterLast)) {
+                return;
+            }
+
+            if (requirePaddingFor(node)) {
+
+                if (!blockHasTopPadding) {
+                    context.report({
+                        node,
+                        loc: {
+                            start: tokenBeforeFirst.loc.start,
+                            end: firstBlockToken.loc.start
+                        },
+                        fix(fixer) {
+                            return fixer.insertTextAfter(tokenBeforeFirst, "\n");
+                        },
+                        messageId: "alwaysPadBlock"
+                    });
+                }
+                if (!blockHasBottomPadding) {
+                    context.report({
+                        node,
+                        loc: {
+                            end: tokenAfterLast.loc.start,
+                            start: lastBlockToken.loc.end
+                        },
+                        fix(fixer) {
+                            return fixer.insertTextBefore(tokenAfterLast, "\n");
+                        },
+                        messageId: "alwaysPadBlock"
+                    });
+                }
+            } else {
+                if (blockHasTopPadding) {
+
+                    context.report({
+                        node,
+                        loc: {
+                            start: tokenBeforeFirst.loc.start,
+                            end: firstBlockToken.loc.start
+                        },
+                        fix(fixer) {
+                            return fixer.replaceTextRange([tokenBeforeFirst.range[1], firstBlockToken.range[0] - firstBlockToken.loc.start.column], "\n");
+                        },
+                        messageId: "neverPadBlock"
+                    });
+                }
+
+                if (blockHasBottomPadding) {
+
+                    context.report({
+                        node,
+                        loc: {
+                            end: tokenAfterLast.loc.start,
+                            start: lastBlockToken.loc.end
+                        },
+                        messageId: "neverPadBlock",
+                        fix(fixer) {
+                            return fixer.replaceTextRange([lastBlockToken.range[1], tokenAfterLast.range[0] - tokenAfterLast.loc.start.column], "\n");
+                        }
+                    });
+                }
+            }
+        }
+
+        const rule = {};
+
+        if (Object.prototype.hasOwnProperty.call(options, "switches")) {
+            rule.SwitchStatement = function(node) {
+                if (node.cases.length === 0) {
+                    return;
+                }
+                checkPadding(node);
+            };
+        }
+
+        if (Object.prototype.hasOwnProperty.call(options, "blocks")) {
+            rule.BlockStatement = function(node) {
+                if (node.body.length === 0) {
+                    return;
+                }
+                checkPadding(node);
+            };
+            rule.StaticBlock = rule.BlockStatement;
+        }
+
+        if (Object.prototype.hasOwnProperty.call(options, "classes")) {
+            rule.ClassBody = function(node) {
+                if (node.body.length === 0) {
+                    return;
+                }
+                checkPadding(node);
+            };
+        }
+
+        return rule;
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/padding-line-between-statements.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/padding-line-between-statements.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/padding-line-between-statements.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,590 @@
+/**
+ * @fileoverview Rule to require or disallow newlines between statements
+ * @author Toru Nagashima
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const LT = `[${Array.from(astUtils.LINEBREAKS).join("")}]`;
+const PADDING_LINE_SEQUENCE = new RegExp(
+    String.raw`^(\s*?${LT})\s*${LT}(\s*;?)$`,
+    "u"
+);
+const CJS_EXPORT = /^(?:module\s*\.\s*)?exports(?:\s*\.|\s*\[|$)/u;
+const CJS_IMPORT = /^require\(/u;
+
+/**
+ * Creates tester which check if a node starts with specific keyword.
+ * @param {string} keyword The keyword to test.
+ * @returns {Object} the created tester.
+ * @private
+ */
+function newKeywordTester(keyword) {
+    return {
+        test: (node, sourceCode) =>
+            sourceCode.getFirstToken(node).value === keyword
+    };
+}
+
+/**
+ * Creates tester which check if a node starts with specific keyword and spans a single line.
+ * @param {string} keyword The keyword to test.
+ * @returns {Object} the created tester.
+ * @private
+ */
+function newSinglelineKeywordTester(keyword) {
+    return {
+        test: (node, sourceCode) =>
+            node.loc.start.line === node.loc.end.line &&
+            sourceCode.getFirstToken(node).value === keyword
+    };
+}
+
+/**
+ * Creates tester which check if a node starts with specific keyword and spans multiple lines.
+ * @param {string} keyword The keyword to test.
+ * @returns {Object} the created tester.
+ * @private
+ */
+function newMultilineKeywordTester(keyword) {
+    return {
+        test: (node, sourceCode) =>
+            node.loc.start.line !== node.loc.end.line &&
+            sourceCode.getFirstToken(node).value === keyword
+    };
+}
+
+/**
+ * Creates tester which check if a node is specific type.
+ * @param {string} type The node type to test.
+ * @returns {Object} the created tester.
+ * @private
+ */
+function newNodeTypeTester(type) {
+    return {
+        test: node =>
+            node.type === type
+    };
+}
+
+/**
+ * Checks the given node is an expression statement of IIFE.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is an expression statement of IIFE.
+ * @private
+ */
+function isIIFEStatement(node) {
+    if (node.type === "ExpressionStatement") {
+        let call = astUtils.skipChainExpression(node.expression);
+
+        if (call.type === "UnaryExpression") {
+            call = astUtils.skipChainExpression(call.argument);
+        }
+        return call.type === "CallExpression" && astUtils.isFunction(call.callee);
+    }
+    return false;
+}
+
+/**
+ * Checks whether the given node is a block-like statement.
+ * This checks the last token of the node is the closing brace of a block.
+ * @param {SourceCode} sourceCode The source code to get tokens.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is a block-like statement.
+ * @private
+ */
+function isBlockLikeStatement(sourceCode, node) {
+
+    // do-while with a block is a block-like statement.
+    if (node.type === "DoWhileStatement" && node.body.type === "BlockStatement") {
+        return true;
+    }
+
+    /*
+     * IIFE is a block-like statement specially from
+     * JSCS#disallowPaddingNewLinesAfterBlocks.
+     */
+    if (isIIFEStatement(node)) {
+        return true;
+    }
+
+    // Checks the last token is a closing brace of blocks.
+    const lastToken = sourceCode.getLastToken(node, astUtils.isNotSemicolonToken);
+    const belongingNode = lastToken && astUtils.isClosingBraceToken(lastToken)
+        ? sourceCode.getNodeByRangeIndex(lastToken.range[0])
+        : null;
+
+    return Boolean(belongingNode) && (
+        belongingNode.type === "BlockStatement" ||
+        belongingNode.type === "SwitchStatement"
+    );
+}
+
+/**
+ * Gets the actual last token.
+ *
+ * If a semicolon is semicolon-less style's semicolon, this ignores it.
+ * For example:
+ *
+ *     foo()
+ *     ;[1, 2, 3].forEach(bar)
+ * @param {SourceCode} sourceCode The source code to get tokens.
+ * @param {ASTNode} node The node to get.
+ * @returns {Token} The actual last token.
+ * @private
+ */
+function getActualLastToken(sourceCode, node) {
+    const semiToken = sourceCode.getLastToken(node);
+    const prevToken = sourceCode.getTokenBefore(semiToken);
+    const nextToken = sourceCode.getTokenAfter(semiToken);
+    const isSemicolonLessStyle = Boolean(
+        prevToken &&
+        nextToken &&
+        prevToken.range[0] >= node.range[0] &&
+        astUtils.isSemicolonToken(semiToken) &&
+        semiToken.loc.start.line !== prevToken.loc.end.line &&
+        semiToken.loc.end.line === nextToken.loc.start.line
+    );
+
+    return isSemicolonLessStyle ? prevToken : semiToken;
+}
+
+/**
+ * This returns the concatenation of the first 2 captured strings.
+ * @param {string} _ Unused. Whole matched string.
+ * @param {string} trailingSpaces The trailing spaces of the first line.
+ * @param {string} indentSpaces The indentation spaces of the last line.
+ * @returns {string} The concatenation of trailingSpaces and indentSpaces.
+ * @private
+ */
+function replacerToRemovePaddingLines(_, trailingSpaces, indentSpaces) {
+    return trailingSpaces + indentSpaces;
+}
+
+/**
+ * Check and report statements for `any` configuration.
+ * It does nothing.
+ * @returns {void}
+ * @private
+ */
+function verifyForAny() {
+}
+
+/**
+ * Check and report statements for `never` configuration.
+ * This autofix removes blank lines between the given 2 statements.
+ * However, if comments exist between 2 blank lines, it does not remove those
+ * blank lines automatically.
+ * @param {RuleContext} context The rule context to report.
+ * @param {ASTNode} _ Unused. The previous node to check.
+ * @param {ASTNode} nextNode The next node to check.
+ * @param {Array<Token[]>} paddingLines The array of token pairs that blank
+ * lines exist between the pair.
+ * @returns {void}
+ * @private
+ */
+function verifyForNever(context, _, nextNode, paddingLines) {
+    if (paddingLines.length === 0) {
+        return;
+    }
+
+    context.report({
+        node: nextNode,
+        messageId: "unexpectedBlankLine",
+        fix(fixer) {
+            if (paddingLines.length >= 2) {
+                return null;
+            }
+
+            const prevToken = paddingLines[0][0];
+            const nextToken = paddingLines[0][1];
+            const start = prevToken.range[1];
+            const end = nextToken.range[0];
+            const text = context.sourceCode.text
+                .slice(start, end)
+                .replace(PADDING_LINE_SEQUENCE, replacerToRemovePaddingLines);
+
+            return fixer.replaceTextRange([start, end], text);
+        }
+    });
+}
+
+/**
+ * Check and report statements for `always` configuration.
+ * This autofix inserts a blank line between the given 2 statements.
+ * If the `prevNode` has trailing comments, it inserts a blank line after the
+ * trailing comments.
+ * @param {RuleContext} context The rule context to report.
+ * @param {ASTNode} prevNode The previous node to check.
+ * @param {ASTNode} nextNode The next node to check.
+ * @param {Array<Token[]>} paddingLines The array of token pairs that blank
+ * lines exist between the pair.
+ * @returns {void}
+ * @private
+ */
+function verifyForAlways(context, prevNode, nextNode, paddingLines) {
+    if (paddingLines.length > 0) {
+        return;
+    }
+
+    context.report({
+        node: nextNode,
+        messageId: "expectedBlankLine",
+        fix(fixer) {
+            const sourceCode = context.sourceCode;
+            let prevToken = getActualLastToken(sourceCode, prevNode);
+            const nextToken = sourceCode.getFirstTokenBetween(
+                prevToken,
+                nextNode,
+                {
+                    includeComments: true,
+
+                    /**
+                     * Skip the trailing comments of the previous node.
+                     * This inserts a blank line after the last trailing comment.
+                     *
+                     * For example:
+                     *
+                     *     foo(); // trailing comment.
+                     *     // comment.
+                     *     bar();
+                     *
+                     * Get fixed to:
+                     *
+                     *     foo(); // trailing comment.
+                     *
+                     *     // comment.
+                     *     bar();
+                     * @param {Token} token The token to check.
+                     * @returns {boolean} `true` if the token is not a trailing comment.
+                     * @private
+                     */
+                    filter(token) {
+                        if (astUtils.isTokenOnSameLine(prevToken, token)) {
+                            prevToken = token;
+                            return false;
+                        }
+                        return true;
+                    }
+                }
+            ) || nextNode;
+            const insertText = astUtils.isTokenOnSameLine(prevToken, nextToken)
+                ? "\n\n"
+                : "\n";
+
+            return fixer.insertTextAfter(prevToken, insertText);
+        }
+    });
+}
+
+/**
+ * Types of blank lines.
+ * `any`, `never`, and `always` are defined.
+ * Those have `verify` method to check and report statements.
+ * @private
+ */
+const PaddingTypes = {
+    any: { verify: verifyForAny },
+    never: { verify: verifyForNever },
+    always: { verify: verifyForAlways }
+};
+
+/**
+ * Types of statements.
+ * Those have `test` method to check it matches to the given statement.
+ * @private
+ */
+const StatementTypes = {
+    "*": { test: () => true },
+    "block-like": {
+        test: (node, sourceCode) => isBlockLikeStatement(sourceCode, node)
+    },
+    "cjs-export": {
+        test: (node, sourceCode) =>
+            node.type === "ExpressionStatement" &&
+            node.expression.type === "AssignmentExpression" &&
+            CJS_EXPORT.test(sourceCode.getText(node.expression.left))
+    },
+    "cjs-import": {
+        test: (node, sourceCode) =>
+            node.type === "VariableDeclaration" &&
+            node.declarations.length > 0 &&
+            Boolean(node.declarations[0].init) &&
+            CJS_IMPORT.test(sourceCode.getText(node.declarations[0].init))
+    },
+    directive: {
+        test: astUtils.isDirective
+    },
+    expression: {
+        test: node => node.type === "ExpressionStatement" && !astUtils.isDirective(node)
+    },
+    iife: {
+        test: isIIFEStatement
+    },
+    "multiline-block-like": {
+        test: (node, sourceCode) =>
+            node.loc.start.line !== node.loc.end.line &&
+            isBlockLikeStatement(sourceCode, node)
+    },
+    "multiline-expression": {
+        test: node =>
+            node.loc.start.line !== node.loc.end.line &&
+            node.type === "ExpressionStatement" &&
+            !astUtils.isDirective(node)
+    },
+
+    "multiline-const": newMultilineKeywordTester("const"),
+    "multiline-let": newMultilineKeywordTester("let"),
+    "multiline-var": newMultilineKeywordTester("var"),
+    "singleline-const": newSinglelineKeywordTester("const"),
+    "singleline-let": newSinglelineKeywordTester("let"),
+    "singleline-var": newSinglelineKeywordTester("var"),
+
+    block: newNodeTypeTester("BlockStatement"),
+    empty: newNodeTypeTester("EmptyStatement"),
+    function: newNodeTypeTester("FunctionDeclaration"),
+
+    break: newKeywordTester("break"),
+    case: newKeywordTester("case"),
+    class: newKeywordTester("class"),
+    const: newKeywordTester("const"),
+    continue: newKeywordTester("continue"),
+    debugger: newKeywordTester("debugger"),
+    default: newKeywordTester("default"),
+    do: newKeywordTester("do"),
+    export: newKeywordTester("export"),
+    for: newKeywordTester("for"),
+    if: newKeywordTester("if"),
+    import: newKeywordTester("import"),
+    let: newKeywordTester("let"),
+    return: newKeywordTester("return"),
+    switch: newKeywordTester("switch"),
+    throw: newKeywordTester("throw"),
+    try: newKeywordTester("try"),
+    var: newKeywordTester("var"),
+    while: newKeywordTester("while"),
+    with: newKeywordTester("with")
+};
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require or disallow padding lines between statements",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/padding-line-between-statements"
+        },
+
+        fixable: "whitespace",
+
+        schema: {
+            definitions: {
+                paddingType: {
+                    enum: Object.keys(PaddingTypes)
+                },
+                statementType: {
+                    anyOf: [
+                        { enum: Object.keys(StatementTypes) },
+                        {
+                            type: "array",
+                            items: { enum: Object.keys(StatementTypes) },
+                            minItems: 1,
+                            uniqueItems: true
+                        }
+                    ]
+                }
+            },
+            type: "array",
+            items: {
+                type: "object",
+                properties: {
+                    blankLine: { $ref: "#/definitions/paddingType" },
+                    prev: { $ref: "#/definitions/statementType" },
+                    next: { $ref: "#/definitions/statementType" }
+                },
+                additionalProperties: false,
+                required: ["blankLine", "prev", "next"]
+            }
+        },
+
+        messages: {
+            unexpectedBlankLine: "Unexpected blank line before this statement.",
+            expectedBlankLine: "Expected blank line before this statement."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const configureList = context.options || [];
+        let scopeInfo = null;
+
+        /**
+         * Processes to enter to new scope.
+         * This manages the current previous statement.
+         * @returns {void}
+         * @private
+         */
+        function enterScope() {
+            scopeInfo = {
+                upper: scopeInfo,
+                prevNode: null
+            };
+        }
+
+        /**
+         * Processes to exit from the current scope.
+         * @returns {void}
+         * @private
+         */
+        function exitScope() {
+            scopeInfo = scopeInfo.upper;
+        }
+
+        /**
+         * Checks whether the given node matches the given type.
+         * @param {ASTNode} node The statement node to check.
+         * @param {string|string[]} type The statement type to check.
+         * @returns {boolean} `true` if the statement node matched the type.
+         * @private
+         */
+        function match(node, type) {
+            let innerStatementNode = node;
+
+            while (innerStatementNode.type === "LabeledStatement") {
+                innerStatementNode = innerStatementNode.body;
+            }
+            if (Array.isArray(type)) {
+                return type.some(match.bind(null, innerStatementNode));
+            }
+            return StatementTypes[type].test(innerStatementNode, sourceCode);
+        }
+
+        /**
+         * Finds the last matched configure from configureList.
+         * @param {ASTNode} prevNode The previous statement to match.
+         * @param {ASTNode} nextNode The current statement to match.
+         * @returns {Object} The tester of the last matched configure.
+         * @private
+         */
+        function getPaddingType(prevNode, nextNode) {
+            for (let i = configureList.length - 1; i >= 0; --i) {
+                const configure = configureList[i];
+                const matched =
+                    match(prevNode, configure.prev) &&
+                    match(nextNode, configure.next);
+
+                if (matched) {
+                    return PaddingTypes[configure.blankLine];
+                }
+            }
+            return PaddingTypes.any;
+        }
+
+        /**
+         * Gets padding line sequences between the given 2 statements.
+         * Comments are separators of the padding line sequences.
+         * @param {ASTNode} prevNode The previous statement to count.
+         * @param {ASTNode} nextNode The current statement to count.
+         * @returns {Array<Token[]>} The array of token pairs.
+         * @private
+         */
+        function getPaddingLineSequences(prevNode, nextNode) {
+            const pairs = [];
+            let prevToken = getActualLastToken(sourceCode, prevNode);
+
+            if (nextNode.loc.start.line - prevToken.loc.end.line >= 2) {
+                do {
+                    const token = sourceCode.getTokenAfter(
+                        prevToken,
+                        { includeComments: true }
+                    );
+
+                    if (token.loc.start.line - prevToken.loc.end.line >= 2) {
+                        pairs.push([prevToken, token]);
+                    }
+                    prevToken = token;
+
+                } while (prevToken.range[0] < nextNode.range[0]);
+            }
+
+            return pairs;
+        }
+
+        /**
+         * Verify padding lines between the given node and the previous node.
+         * @param {ASTNode} node The node to verify.
+         * @returns {void}
+         * @private
+         */
+        function verify(node) {
+            const parentType = node.parent.type;
+            const validParent =
+                astUtils.STATEMENT_LIST_PARENTS.has(parentType) ||
+                parentType === "SwitchStatement";
+
+            if (!validParent) {
+                return;
+            }
+
+            // Save this node as the current previous statement.
+            const prevNode = scopeInfo.prevNode;
+
+            // Verify.
+            if (prevNode) {
+                const type = getPaddingType(prevNode, node);
+                const paddingLines = getPaddingLineSequences(prevNode, node);
+
+                type.verify(context, prevNode, node, paddingLines);
+            }
+
+            scopeInfo.prevNode = node;
+        }
+
+        /**
+         * Verify padding lines between the given node and the previous node.
+         * Then process to enter to new scope.
+         * @param {ASTNode} node The node to verify.
+         * @returns {void}
+         * @private
+         */
+        function verifyThenEnterScope(node) {
+            verify(node);
+            enterScope();
+        }
+
+        return {
+            Program: enterScope,
+            BlockStatement: enterScope,
+            SwitchStatement: enterScope,
+            StaticBlock: enterScope,
+            "Program:exit": exitScope,
+            "BlockStatement:exit": exitScope,
+            "SwitchStatement:exit": exitScope,
+            "StaticBlock:exit": exitScope,
+
+            ":statement": verify,
+
+            SwitchCase: verifyThenEnterScope,
+            "SwitchCase:exit": exitScope
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/prefer-arrow-callback.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/prefer-arrow-callback.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/prefer-arrow-callback.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,381 @@
+/**
+ * @fileoverview A rule to suggest using arrow functions as callbacks.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given variable is a function name.
+ * @param {eslint-scope.Variable} variable A variable to check.
+ * @returns {boolean} `true` if the variable is a function name.
+ */
+function isFunctionName(variable) {
+    return variable && variable.defs[0].type === "FunctionName";
+}
+
+/**
+ * Checks whether or not a given MetaProperty node equals to a given value.
+ * @param {ASTNode} node A MetaProperty node to check.
+ * @param {string} metaName The name of `MetaProperty.meta`.
+ * @param {string} propertyName The name of `MetaProperty.property`.
+ * @returns {boolean} `true` if the node is the specific value.
+ */
+function checkMetaProperty(node, metaName, propertyName) {
+    return node.meta.name === metaName && node.property.name === propertyName;
+}
+
+/**
+ * Gets the variable object of `arguments` which is defined implicitly.
+ * @param {eslint-scope.Scope} scope A scope to get.
+ * @returns {eslint-scope.Variable} The found variable object.
+ */
+function getVariableOfArguments(scope) {
+    const variables = scope.variables;
+
+    for (let i = 0; i < variables.length; ++i) {
+        const variable = variables[i];
+
+        if (variable.name === "arguments") {
+
+            /*
+             * If there was a parameter which is named "arguments", the
+             * implicit "arguments" is not defined.
+             * So does fast return with null.
+             */
+            return (variable.identifiers.length === 0) ? variable : null;
+        }
+    }
+
+    /* c8 ignore next */
+    return null;
+}
+
+/**
+ * Checks whether or not a given node is a callback.
+ * @param {ASTNode} node A node to check.
+ * @throws {Error} (Unreachable.)
+ * @returns {Object}
+ *   {boolean} retv.isCallback - `true` if the node is a callback.
+ *   {boolean} retv.isLexicalThis - `true` if the node is with `.bind(this)`.
+ */
+function getCallbackInfo(node) {
+    const retv = { isCallback: false, isLexicalThis: false };
+    let currentNode = node;
+    let parent = node.parent;
+    let bound = false;
+
+    while (currentNode) {
+        switch (parent.type) {
+
+            // Checks parents recursively.
+
+            case "LogicalExpression":
+            case "ChainExpression":
+            case "ConditionalExpression":
+                break;
+
+            // Checks whether the parent node is `.bind(this)` call.
+            case "MemberExpression":
+                if (
+                    parent.object === currentNode &&
+                    !parent.property.computed &&
+                    parent.property.type === "Identifier" &&
+                    parent.property.name === "bind"
+                ) {
+                    const maybeCallee = parent.parent.type === "ChainExpression"
+                        ? parent.parent
+                        : parent;
+
+                    if (astUtils.isCallee(maybeCallee)) {
+                        if (!bound) {
+                            bound = true; // Use only the first `.bind()` to make `isLexicalThis` value.
+                            retv.isLexicalThis = (
+                                maybeCallee.parent.arguments.length === 1 &&
+                                maybeCallee.parent.arguments[0].type === "ThisExpression"
+                            );
+                        }
+                        parent = maybeCallee.parent;
+                    } else {
+                        return retv;
+                    }
+                } else {
+                    return retv;
+                }
+                break;
+
+            // Checks whether the node is a callback.
+            case "CallExpression":
+            case "NewExpression":
+                if (parent.callee !== currentNode) {
+                    retv.isCallback = true;
+                }
+                return retv;
+
+            default:
+                return retv;
+        }
+
+        currentNode = parent;
+        parent = parent.parent;
+    }
+
+    /* c8 ignore next */
+    throw new Error("unreachable");
+}
+
+/**
+ * Checks whether a simple list of parameters contains any duplicates. This does not handle complex
+ * parameter lists (e.g. with destructuring), since complex parameter lists are a SyntaxError with duplicate
+ * parameter names anyway. Instead, it always returns `false` for complex parameter lists.
+ * @param {ASTNode[]} paramsList The list of parameters for a function
+ * @returns {boolean} `true` if the list of parameters contains any duplicates
+ */
+function hasDuplicateParams(paramsList) {
+    return paramsList.every(param => param.type === "Identifier") && paramsList.length !== new Set(paramsList.map(param => param.name)).size;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require using arrow functions for callbacks",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-arrow-callback"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowNamedFunctions: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowUnboundThis: {
+                        type: "boolean",
+                        default: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "code",
+
+        messages: {
+            preferArrowCallback: "Unexpected function expression."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+
+        const allowUnboundThis = options.allowUnboundThis !== false; // default to true
+        const allowNamedFunctions = options.allowNamedFunctions;
+        const sourceCode = context.sourceCode;
+
+        /*
+         * {Array<{this: boolean, super: boolean, meta: boolean}>}
+         * - this - A flag which shows there are one or more ThisExpression.
+         * - super - A flag which shows there are one or more Super.
+         * - meta - A flag which shows there are one or more MethProperty.
+         */
+        let stack = [];
+
+        /**
+         * Pushes new function scope with all `false` flags.
+         * @returns {void}
+         */
+        function enterScope() {
+            stack.push({ this: false, super: false, meta: false });
+        }
+
+        /**
+         * Pops a function scope from the stack.
+         * @returns {{this: boolean, super: boolean, meta: boolean}} The information of the last scope.
+         */
+        function exitScope() {
+            return stack.pop();
+        }
+
+        return {
+
+            // Reset internal state.
+            Program() {
+                stack = [];
+            },
+
+            // If there are below, it cannot replace with arrow functions merely.
+            ThisExpression() {
+                const info = stack[stack.length - 1];
+
+                if (info) {
+                    info.this = true;
+                }
+            },
+
+            Super() {
+                const info = stack[stack.length - 1];
+
+                if (info) {
+                    info.super = true;
+                }
+            },
+
+            MetaProperty(node) {
+                const info = stack[stack.length - 1];
+
+                if (info && checkMetaProperty(node, "new", "target")) {
+                    info.meta = true;
+                }
+            },
+
+            // To skip nested scopes.
+            FunctionDeclaration: enterScope,
+            "FunctionDeclaration:exit": exitScope,
+
+            // Main.
+            FunctionExpression: enterScope,
+            "FunctionExpression:exit"(node) {
+                const scopeInfo = exitScope();
+
+                // Skip named function expressions
+                if (allowNamedFunctions && node.id && node.id.name) {
+                    return;
+                }
+
+                // Skip generators.
+                if (node.generator) {
+                    return;
+                }
+
+                // Skip recursive functions.
+                const nameVar = sourceCode.getDeclaredVariables(node)[0];
+
+                if (isFunctionName(nameVar) && nameVar.references.length > 0) {
+                    return;
+                }
+
+                // Skip if it's using arguments.
+                const variable = getVariableOfArguments(sourceCode.getScope(node));
+
+                if (variable && variable.references.length > 0) {
+                    return;
+                }
+
+                // Reports if it's a callback which can replace with arrows.
+                const callbackInfo = getCallbackInfo(node);
+
+                if (callbackInfo.isCallback &&
+                    (!allowUnboundThis || !scopeInfo.this || callbackInfo.isLexicalThis) &&
+                    !scopeInfo.super &&
+                    !scopeInfo.meta
+                ) {
+                    context.report({
+                        node,
+                        messageId: "preferArrowCallback",
+                        *fix(fixer) {
+                            if ((!callbackInfo.isLexicalThis && scopeInfo.this) || hasDuplicateParams(node.params)) {
+
+                                /*
+                                 * If the callback function does not have .bind(this) and contains a reference to `this`, there
+                                 * is no way to determine what `this` should be, so don't perform any fixes.
+                                 * If the callback function has duplicates in its list of parameters (possible in sloppy mode),
+                                 * don't replace it with an arrow function, because this is a SyntaxError with arrow functions.
+                                 */
+                                return;
+                            }
+
+                            // Remove `.bind(this)` if exists.
+                            if (callbackInfo.isLexicalThis) {
+                                const memberNode = node.parent;
+
+                                /*
+                                 * If `.bind(this)` exists but the parent is not `.bind(this)`, don't remove it automatically.
+                                 * E.g. `(foo || function(){}).bind(this)`
+                                 */
+                                if (memberNode.type !== "MemberExpression") {
+                                    return;
+                                }
+
+                                const callNode = memberNode.parent;
+                                const firstTokenToRemove = sourceCode.getTokenAfter(memberNode.object, astUtils.isNotClosingParenToken);
+                                const lastTokenToRemove = sourceCode.getLastToken(callNode);
+
+                                /*
+                                 * If the member expression is parenthesized, don't remove the right paren.
+                                 * E.g. `(function(){}.bind)(this)`
+                                 *                    ^^^^^^^^^^^^
+                                 */
+                                if (astUtils.isParenthesised(sourceCode, memberNode)) {
+                                    return;
+                                }
+
+                                // If comments exist in the `.bind(this)`, don't remove those.
+                                if (sourceCode.commentsExistBetween(firstTokenToRemove, lastTokenToRemove)) {
+                                    return;
+                                }
+
+                                yield fixer.removeRange([firstTokenToRemove.range[0], lastTokenToRemove.range[1]]);
+                            }
+
+                            // Convert the function expression to an arrow function.
+                            const functionToken = sourceCode.getFirstToken(node, node.async ? 1 : 0);
+                            const leftParenToken = sourceCode.getTokenAfter(functionToken, astUtils.isOpeningParenToken);
+                            const tokenBeforeBody = sourceCode.getTokenBefore(node.body);
+
+                            if (sourceCode.commentsExistBetween(functionToken, leftParenToken)) {
+
+                                // Remove only extra tokens to keep comments.
+                                yield fixer.remove(functionToken);
+                                if (node.id) {
+                                    yield fixer.remove(node.id);
+                                }
+                            } else {
+
+                                // Remove extra tokens and spaces.
+                                yield fixer.removeRange([functionToken.range[0], leftParenToken.range[0]]);
+                            }
+                            yield fixer.insertTextAfter(tokenBeforeBody, " =>");
+
+                            // Get the node that will become the new arrow function.
+                            let replacedNode = callbackInfo.isLexicalThis ? node.parent.parent : node;
+
+                            if (replacedNode.type === "ChainExpression") {
+                                replacedNode = replacedNode.parent;
+                            }
+
+                            /*
+                             * If the replaced node is part of a BinaryExpression, LogicalExpression, or MemberExpression, then
+                             * the arrow function needs to be parenthesized, because `foo || () => {}` is invalid syntax even
+                             * though `foo || function() {}` is valid.
+                             */
+                            if (
+                                replacedNode.parent.type !== "CallExpression" &&
+                                replacedNode.parent.type !== "ConditionalExpression" &&
+                                !astUtils.isParenthesised(sourceCode, replacedNode) &&
+                                !astUtils.isParenthesised(sourceCode, node)
+                            ) {
+                                yield fixer.insertTextBefore(replacedNode, "(");
+                                yield fixer.insertTextAfter(replacedNode, ")");
+                            }
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/prefer-const.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/prefer-const.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/prefer-const.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,501 @@
+/**
+ * @fileoverview A rule to suggest using of const declaration for variables that are never reassigned after declared.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const FixTracker = require("./utils/fix-tracker");
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const PATTERN_TYPE = /^(?:.+?Pattern|RestElement|SpreadProperty|ExperimentalRestProperty|Property)$/u;
+const DECLARATION_HOST_TYPE = /^(?:Program|BlockStatement|StaticBlock|SwitchCase)$/u;
+const DESTRUCTURING_HOST_TYPE = /^(?:VariableDeclarator|AssignmentExpression)$/u;
+
+/**
+ * Checks whether a given node is located at `ForStatement.init` or not.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} `true` if the node is located at `ForStatement.init`.
+ */
+function isInitOfForStatement(node) {
+    return node.parent.type === "ForStatement" && node.parent.init === node;
+}
+
+/**
+ * Checks whether a given Identifier node becomes a VariableDeclaration or not.
+ * @param {ASTNode} identifier An Identifier node to check.
+ * @returns {boolean} `true` if the node can become a VariableDeclaration.
+ */
+function canBecomeVariableDeclaration(identifier) {
+    let node = identifier.parent;
+
+    while (PATTERN_TYPE.test(node.type)) {
+        node = node.parent;
+    }
+
+    return (
+        node.type === "VariableDeclarator" ||
+        (
+            node.type === "AssignmentExpression" &&
+            node.parent.type === "ExpressionStatement" &&
+            DECLARATION_HOST_TYPE.test(node.parent.parent.type)
+        )
+    );
+}
+
+/**
+ * Checks if an property or element is from outer scope or function parameters
+ * in destructing pattern.
+ * @param {string} name A variable name to be checked.
+ * @param {eslint-scope.Scope} initScope A scope to start find.
+ * @returns {boolean} Indicates if the variable is from outer scope or function parameters.
+ */
+function isOuterVariableInDestructing(name, initScope) {
+
+    if (initScope.through.some(ref => ref.resolved && ref.resolved.name === name)) {
+        return true;
+    }
+
+    const variable = astUtils.getVariableByName(initScope, name);
+
+    if (variable !== null) {
+        return variable.defs.some(def => def.type === "Parameter");
+    }
+
+    return false;
+}
+
+/**
+ * Gets the VariableDeclarator/AssignmentExpression node that a given reference
+ * belongs to.
+ * This is used to detect a mix of reassigned and never reassigned in a
+ * destructuring.
+ * @param {eslint-scope.Reference} reference A reference to get.
+ * @returns {ASTNode|null} A VariableDeclarator/AssignmentExpression node or
+ *      null.
+ */
+function getDestructuringHost(reference) {
+    if (!reference.isWrite()) {
+        return null;
+    }
+    let node = reference.identifier.parent;
+
+    while (PATTERN_TYPE.test(node.type)) {
+        node = node.parent;
+    }
+
+    if (!DESTRUCTURING_HOST_TYPE.test(node.type)) {
+        return null;
+    }
+    return node;
+}
+
+/**
+ * Determines if a destructuring assignment node contains
+ * any MemberExpression nodes. This is used to determine if a
+ * variable that is only written once using destructuring can be
+ * safely converted into a const declaration.
+ * @param {ASTNode} node The ObjectPattern or ArrayPattern node to check.
+ * @returns {boolean} True if the destructuring pattern contains
+ *      a MemberExpression, false if not.
+ */
+function hasMemberExpressionAssignment(node) {
+    switch (node.type) {
+        case "ObjectPattern":
+            return node.properties.some(prop => {
+                if (prop) {
+
+                    /*
+                     * Spread elements have an argument property while
+                     * others have a value property. Because different
+                     * parsers use different node types for spread elements,
+                     * we just check if there is an argument property.
+                     */
+                    return hasMemberExpressionAssignment(prop.argument || prop.value);
+                }
+
+                return false;
+            });
+
+        case "ArrayPattern":
+            return node.elements.some(element => {
+                if (element) {
+                    return hasMemberExpressionAssignment(element);
+                }
+
+                return false;
+            });
+
+        case "AssignmentPattern":
+            return hasMemberExpressionAssignment(node.left);
+
+        case "MemberExpression":
+            return true;
+
+        // no default
+    }
+
+    return false;
+}
+
+/**
+ * Gets an identifier node of a given variable.
+ *
+ * If the initialization exists or one or more reading references exist before
+ * the first assignment, the identifier node is the node of the declaration.
+ * Otherwise, the identifier node is the node of the first assignment.
+ *
+ * If the variable should not change to const, this function returns null.
+ * - If the variable is reassigned.
+ * - If the variable is never initialized nor assigned.
+ * - If the variable is initialized in a different scope from the declaration.
+ * - If the unique assignment of the variable cannot change to a declaration.
+ *   e.g. `if (a) b = 1` / `return (b = 1)`
+ * - If the variable is declared in the global scope and `eslintUsed` is `true`.
+ *   `/*exported foo` directive comment makes such variables. This rule does not
+ *   warn such variables because this rule cannot distinguish whether the
+ *   exported variables are reassigned or not.
+ * @param {eslint-scope.Variable} variable A variable to get.
+ * @param {boolean} ignoreReadBeforeAssign
+ *      The value of `ignoreReadBeforeAssign` option.
+ * @returns {ASTNode|null}
+ *      An Identifier node if the variable should change to const.
+ *      Otherwise, null.
+ */
+function getIdentifierIfShouldBeConst(variable, ignoreReadBeforeAssign) {
+    if (variable.eslintUsed && variable.scope.type === "global") {
+        return null;
+    }
+
+    // Finds the unique WriteReference.
+    let writer = null;
+    let isReadBeforeInit = false;
+    const references = variable.references;
+
+    for (let i = 0; i < references.length; ++i) {
+        const reference = references[i];
+
+        if (reference.isWrite()) {
+            const isReassigned = (
+                writer !== null &&
+                writer.identifier !== reference.identifier
+            );
+
+            if (isReassigned) {
+                return null;
+            }
+
+            const destructuringHost = getDestructuringHost(reference);
+
+            if (destructuringHost !== null && destructuringHost.left !== void 0) {
+                const leftNode = destructuringHost.left;
+                let hasOuterVariables = false,
+                    hasNonIdentifiers = false;
+
+                if (leftNode.type === "ObjectPattern") {
+                    const properties = leftNode.properties;
+
+                    hasOuterVariables = properties
+                        .filter(prop => prop.value)
+                        .map(prop => prop.value.name)
+                        .some(name => isOuterVariableInDestructing(name, variable.scope));
+
+                    hasNonIdentifiers = hasMemberExpressionAssignment(leftNode);
+
+                } else if (leftNode.type === "ArrayPattern") {
+                    const elements = leftNode.elements;
+
+                    hasOuterVariables = elements
+                        .map(element => element && element.name)
+                        .some(name => isOuterVariableInDestructing(name, variable.scope));
+
+                    hasNonIdentifiers = hasMemberExpressionAssignment(leftNode);
+                }
+
+                if (hasOuterVariables || hasNonIdentifiers) {
+                    return null;
+                }
+
+            }
+
+            writer = reference;
+
+        } else if (reference.isRead() && writer === null) {
+            if (ignoreReadBeforeAssign) {
+                return null;
+            }
+            isReadBeforeInit = true;
+        }
+    }
+
+    /*
+     * If the assignment is from a different scope, ignore it.
+     * If the assignment cannot change to a declaration, ignore it.
+     */
+    const shouldBeConst = (
+        writer !== null &&
+        writer.from === variable.scope &&
+        canBecomeVariableDeclaration(writer.identifier)
+    );
+
+    if (!shouldBeConst) {
+        return null;
+    }
+
+    if (isReadBeforeInit) {
+        return variable.defs[0].name;
+    }
+
+    return writer.identifier;
+}
+
+/**
+ * Groups by the VariableDeclarator/AssignmentExpression node that each
+ * reference of given variables belongs to.
+ * This is used to detect a mix of reassigned and never reassigned in a
+ * destructuring.
+ * @param {eslint-scope.Variable[]} variables Variables to group by destructuring.
+ * @param {boolean} ignoreReadBeforeAssign
+ *      The value of `ignoreReadBeforeAssign` option.
+ * @returns {Map<ASTNode, ASTNode[]>} Grouped identifier nodes.
+ */
+function groupByDestructuring(variables, ignoreReadBeforeAssign) {
+    const identifierMap = new Map();
+
+    for (let i = 0; i < variables.length; ++i) {
+        const variable = variables[i];
+        const references = variable.references;
+        const identifier = getIdentifierIfShouldBeConst(variable, ignoreReadBeforeAssign);
+        let prevId = null;
+
+        for (let j = 0; j < references.length; ++j) {
+            const reference = references[j];
+            const id = reference.identifier;
+
+            /*
+             * Avoid counting a reference twice or more for default values of
+             * destructuring.
+             */
+            if (id === prevId) {
+                continue;
+            }
+            prevId = id;
+
+            // Add the identifier node into the destructuring group.
+            const group = getDestructuringHost(reference);
+
+            if (group) {
+                if (identifierMap.has(group)) {
+                    identifierMap.get(group).push(identifier);
+                } else {
+                    identifierMap.set(group, [identifier]);
+                }
+            }
+        }
+    }
+
+    return identifierMap;
+}
+
+/**
+ * Finds the nearest parent of node with a given type.
+ * @param {ASTNode} node The node to search from.
+ * @param {string} type The type field of the parent node.
+ * @param {Function} shouldStop A predicate that returns true if the traversal should stop, and false otherwise.
+ * @returns {ASTNode} The closest ancestor with the specified type; null if no such ancestor exists.
+ */
+function findUp(node, type, shouldStop) {
+    if (!node || shouldStop(node)) {
+        return null;
+    }
+    if (node.type === type) {
+        return node;
+    }
+    return findUp(node.parent, type, shouldStop);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require `const` declarations for variables that are never reassigned after declared",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-const"
+        },
+
+        fixable: "code",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    destructuring: { enum: ["any", "all"], default: "any" },
+                    ignoreReadBeforeAssign: { type: "boolean", default: false }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            useConst: "'{{name}}' is never reassigned. Use 'const' instead."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || {};
+        const sourceCode = context.sourceCode;
+        const shouldMatchAnyDestructuredVariable = options.destructuring !== "all";
+        const ignoreReadBeforeAssign = options.ignoreReadBeforeAssign === true;
+        const variables = [];
+        let reportCount = 0;
+        let checkedId = null;
+        let checkedName = "";
+
+
+        /**
+         * Reports given identifier nodes if all of the nodes should be declared
+         * as const.
+         *
+         * The argument 'nodes' is an array of Identifier nodes.
+         * This node is the result of 'getIdentifierIfShouldBeConst()', so it's
+         * nullable. In simple declaration or assignment cases, the length of
+         * the array is 1. In destructuring cases, the length of the array can
+         * be 2 or more.
+         * @param {(eslint-scope.Reference|null)[]} nodes
+         *      References which are grouped by destructuring to report.
+         * @returns {void}
+         */
+        function checkGroup(nodes) {
+            const nodesToReport = nodes.filter(Boolean);
+
+            if (nodes.length && (shouldMatchAnyDestructuredVariable || nodesToReport.length === nodes.length)) {
+                const varDeclParent = findUp(nodes[0], "VariableDeclaration", parentNode => parentNode.type.endsWith("Statement"));
+                const isVarDecParentNull = varDeclParent === null;
+
+                if (!isVarDecParentNull && varDeclParent.declarations.length > 0) {
+                    const firstDeclaration = varDeclParent.declarations[0];
+
+                    if (firstDeclaration.init) {
+                        const firstDecParent = firstDeclaration.init.parent;
+
+                        /*
+                         * First we check the declaration type and then depending on
+                         * if the type is a "VariableDeclarator" or its an "ObjectPattern"
+                         * we compare the name and id from the first identifier, if the names are different
+                         * we assign the new name, id and reset the count of reportCount and nodeCount in
+                         * order to check each block for the number of reported errors and base our fix
+                         * based on comparing nodes.length and nodesToReport.length.
+                         */
+
+                        if (firstDecParent.type === "VariableDeclarator") {
+
+                            if (firstDecParent.id.name !== checkedName) {
+                                checkedName = firstDecParent.id.name;
+                                reportCount = 0;
+                            }
+
+                            if (firstDecParent.id.type === "ObjectPattern") {
+                                if (firstDecParent.init.name !== checkedName) {
+                                    checkedName = firstDecParent.init.name;
+                                    reportCount = 0;
+                                }
+                            }
+
+                            if (firstDecParent.id !== checkedId) {
+                                checkedId = firstDecParent.id;
+                                reportCount = 0;
+                            }
+                        }
+                    }
+                }
+
+                let shouldFix = varDeclParent &&
+
+                    // Don't do a fix unless all variables in the declarations are initialized (or it's in a for-in or for-of loop)
+                    (varDeclParent.parent.type === "ForInStatement" || varDeclParent.parent.type === "ForOfStatement" ||
+                        varDeclParent.declarations.every(declaration => declaration.init)) &&
+
+                    /*
+                     * If options.destructuring is "all", then this warning will not occur unless
+                     * every assignment in the destructuring should be const. In that case, it's safe
+                     * to apply the fix.
+                     */
+                    nodesToReport.length === nodes.length;
+
+                if (!isVarDecParentNull && varDeclParent.declarations && varDeclParent.declarations.length !== 1) {
+
+                    if (varDeclParent && varDeclParent.declarations && varDeclParent.declarations.length >= 1) {
+
+                        /*
+                         * Add nodesToReport.length to a count, then comparing the count to the length
+                         * of the declarations in the current block.
+                         */
+
+                        reportCount += nodesToReport.length;
+
+                        let totalDeclarationsCount = 0;
+
+                        varDeclParent.declarations.forEach(declaration => {
+                            if (declaration.id.type === "ObjectPattern") {
+                                totalDeclarationsCount += declaration.id.properties.length;
+                            } else if (declaration.id.type === "ArrayPattern") {
+                                totalDeclarationsCount += declaration.id.elements.length;
+                            } else {
+                                totalDeclarationsCount += 1;
+                            }
+                        });
+
+                        shouldFix = shouldFix && (reportCount === totalDeclarationsCount);
+                    }
+                }
+
+                nodesToReport.forEach(node => {
+                    context.report({
+                        node,
+                        messageId: "useConst",
+                        data: node,
+                        fix: shouldFix
+                            ? fixer => {
+                                const letKeywordToken = sourceCode.getFirstToken(varDeclParent, t => t.value === varDeclParent.kind);
+
+                                /**
+                                 * Extend the replacement range to the whole declaration,
+                                 * in order to prevent other fixes in the same pass
+                                 * https://github.com/eslint/eslint/issues/13899
+                                 */
+                                return new FixTracker(fixer, sourceCode)
+                                    .retainRange(varDeclParent.range)
+                                    .replaceTextRange(letKeywordToken.range, "const");
+                            }
+                            : null
+                    });
+                });
+            }
+        }
+
+        return {
+            "Program:exit"() {
+                groupByDestructuring(variables, ignoreReadBeforeAssign).forEach(checkGroup);
+            },
+
+            VariableDeclaration(node) {
+                if (node.kind === "let" && !isInitOfForStatement(node)) {
+                    variables.push(...sourceCode.getDeclaredVariables(node));
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/prefer-destructuring.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/prefer-destructuring.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/prefer-destructuring.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,301 @@
+/**
+ * @fileoverview Prefer destructuring from arrays and objects
+ * @author Alex LaFroscia
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const PRECEDENCE_OF_ASSIGNMENT_EXPR = astUtils.getPrecedence({ type: "AssignmentExpression" });
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require destructuring from arrays and/or objects",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-destructuring"
+        },
+
+        fixable: "code",
+
+        schema: [
+            {
+
+                /*
+                 * old support {array: Boolean, object: Boolean}
+                 * new support {VariableDeclarator: {}, AssignmentExpression: {}}
+                 */
+                oneOf: [
+                    {
+                        type: "object",
+                        properties: {
+                            VariableDeclarator: {
+                                type: "object",
+                                properties: {
+                                    array: {
+                                        type: "boolean"
+                                    },
+                                    object: {
+                                        type: "boolean"
+                                    }
+                                },
+                                additionalProperties: false
+                            },
+                            AssignmentExpression: {
+                                type: "object",
+                                properties: {
+                                    array: {
+                                        type: "boolean"
+                                    },
+                                    object: {
+                                        type: "boolean"
+                                    }
+                                },
+                                additionalProperties: false
+                            }
+                        },
+                        additionalProperties: false
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            array: {
+                                type: "boolean"
+                            },
+                            object: {
+                                type: "boolean"
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            },
+            {
+                type: "object",
+                properties: {
+                    enforceForRenamedProperties: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            preferDestructuring: "Use {{type}} destructuring."
+        }
+    },
+    create(context) {
+
+        const enabledTypes = context.options[0];
+        const enforceForRenamedProperties = context.options[1] && context.options[1].enforceForRenamedProperties;
+        let normalizedOptions = {
+            VariableDeclarator: { array: true, object: true },
+            AssignmentExpression: { array: true, object: true }
+        };
+
+        if (enabledTypes) {
+            normalizedOptions = typeof enabledTypes.array !== "undefined" || typeof enabledTypes.object !== "undefined"
+                ? { VariableDeclarator: enabledTypes, AssignmentExpression: enabledTypes }
+                : enabledTypes;
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Checks if destructuring type should be checked.
+         * @param {string} nodeType "AssignmentExpression" or "VariableDeclarator"
+         * @param {string} destructuringType "array" or "object"
+         * @returns {boolean} `true` if the destructuring type should be checked for the given node
+         */
+        function shouldCheck(nodeType, destructuringType) {
+            return normalizedOptions &&
+                normalizedOptions[nodeType] &&
+                normalizedOptions[nodeType][destructuringType];
+        }
+
+        /**
+         * Determines if the given node is accessing an array index
+         *
+         * This is used to differentiate array index access from object property
+         * access.
+         * @param {ASTNode} node the node to evaluate
+         * @returns {boolean} whether or not the node is an integer
+         */
+        function isArrayIndexAccess(node) {
+            return Number.isInteger(node.property.value);
+        }
+
+        /**
+         * Report that the given node should use destructuring
+         * @param {ASTNode} reportNode the node to report
+         * @param {string} type the type of destructuring that should have been done
+         * @param {Function|null} fix the fix function or null to pass to context.report
+         * @returns {void}
+         */
+        function report(reportNode, type, fix) {
+            context.report({
+                node: reportNode,
+                messageId: "preferDestructuring",
+                data: { type },
+                fix
+            });
+        }
+
+        /**
+         * Determines if a node should be fixed into object destructuring
+         *
+         * The fixer only fixes the simplest case of object destructuring,
+         * like: `let x = a.x`;
+         *
+         * Assignment expression is not fixed.
+         * Array destructuring is not fixed.
+         * Renamed property is not fixed.
+         * @param {ASTNode} node the node to evaluate
+         * @returns {boolean} whether or not the node should be fixed
+         */
+        function shouldFix(node) {
+            return node.type === "VariableDeclarator" &&
+                node.id.type === "Identifier" &&
+                node.init.type === "MemberExpression" &&
+                !node.init.computed &&
+                node.init.property.type === "Identifier" &&
+                node.id.name === node.init.property.name;
+        }
+
+        /**
+         * Fix a node into object destructuring.
+         * This function only handles the simplest case of object destructuring,
+         * see {@link shouldFix}.
+         * @param {SourceCodeFixer} fixer the fixer object
+         * @param {ASTNode} node the node to be fixed.
+         * @returns {Object} a fix for the node
+         */
+        function fixIntoObjectDestructuring(fixer, node) {
+            const rightNode = node.init;
+            const sourceCode = context.sourceCode;
+
+            // Don't fix if that would remove any comments. Only comments inside `rightNode.object` can be preserved.
+            if (sourceCode.getCommentsInside(node).length > sourceCode.getCommentsInside(rightNode.object).length) {
+                return null;
+            }
+
+            let objectText = sourceCode.getText(rightNode.object);
+
+            if (astUtils.getPrecedence(rightNode.object) < PRECEDENCE_OF_ASSIGNMENT_EXPR) {
+                objectText = `(${objectText})`;
+            }
+
+            return fixer.replaceText(
+                node,
+                `{${rightNode.property.name}} = ${objectText}`
+            );
+        }
+
+        /**
+         * Check that the `prefer-destructuring` rules are followed based on the
+         * given left- and right-hand side of the assignment.
+         *
+         * Pulled out into a separate method so that VariableDeclarators and
+         * AssignmentExpressions can share the same verification logic.
+         * @param {ASTNode} leftNode the left-hand side of the assignment
+         * @param {ASTNode} rightNode the right-hand side of the assignment
+         * @param {ASTNode} reportNode the node to report the error on
+         * @returns {void}
+         */
+        function performCheck(leftNode, rightNode, reportNode) {
+            if (
+                rightNode.type !== "MemberExpression" ||
+                rightNode.object.type === "Super" ||
+                rightNode.property.type === "PrivateIdentifier"
+            ) {
+                return;
+            }
+
+            if (isArrayIndexAccess(rightNode)) {
+                if (shouldCheck(reportNode.type, "array")) {
+                    report(reportNode, "array", null);
+                }
+                return;
+            }
+
+            const fix = shouldFix(reportNode)
+                ? fixer => fixIntoObjectDestructuring(fixer, reportNode)
+                : null;
+
+            if (shouldCheck(reportNode.type, "object") && enforceForRenamedProperties) {
+                report(reportNode, "object", fix);
+                return;
+            }
+
+            if (shouldCheck(reportNode.type, "object")) {
+                const property = rightNode.property;
+
+                if (
+                    (property.type === "Literal" && leftNode.name === property.value) ||
+                    (property.type === "Identifier" && leftNode.name === property.name && !rightNode.computed)
+                ) {
+                    report(reportNode, "object", fix);
+                }
+            }
+        }
+
+        /**
+         * Check if a given variable declarator is coming from an property access
+         * that should be using destructuring instead
+         * @param {ASTNode} node the variable declarator to check
+         * @returns {void}
+         */
+        function checkVariableDeclarator(node) {
+
+            // Skip if variable is declared without assignment
+            if (!node.init) {
+                return;
+            }
+
+            // We only care about member expressions past this point
+            if (node.init.type !== "MemberExpression") {
+                return;
+            }
+
+            performCheck(node.id, node.init, node);
+        }
+
+        /**
+         * Run the `prefer-destructuring` check on an AssignmentExpression
+         * @param {ASTNode} node the AssignmentExpression node
+         * @returns {void}
+         */
+        function checkAssignmentExpression(node) {
+            if (node.operator === "=") {
+                performCheck(node.left, node.right, node);
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            VariableDeclarator: checkVariableDeclarator,
+            AssignmentExpression: checkAssignmentExpression
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/prefer-exponentiation-operator.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/prefer-exponentiation-operator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/prefer-exponentiation-operator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,191 @@
+/**
+ * @fileoverview Rule to disallow Math.pow in favor of the ** operator
+ * @author Milos Djermanovic
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const { CALL, ReferenceTracker } = require("@eslint-community/eslint-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const PRECEDENCE_OF_EXPONENTIATION_EXPR = astUtils.getPrecedence({ type: "BinaryExpression", operator: "**" });
+
+/**
+ * Determines whether the given node needs parens if used as the base in an exponentiation binary expression.
+ * @param {ASTNode} base The node to check.
+ * @returns {boolean} `true` if the node needs to be parenthesised.
+ */
+function doesBaseNeedParens(base) {
+    return (
+
+        // '**' is right-associative, parens are needed when Math.pow(a ** b, c) is converted to (a ** b) ** c
+        astUtils.getPrecedence(base) <= PRECEDENCE_OF_EXPONENTIATION_EXPR ||
+
+        // An unary operator cannot be used immediately before an exponentiation expression
+        base.type === "AwaitExpression" ||
+        base.type === "UnaryExpression"
+    );
+}
+
+/**
+ * Determines whether the given node needs parens if used as the exponent in an exponentiation binary expression.
+ * @param {ASTNode} exponent The node to check.
+ * @returns {boolean} `true` if the node needs to be parenthesised.
+ */
+function doesExponentNeedParens(exponent) {
+
+    // '**' is right-associative, there is no need for parens when Math.pow(a, b ** c) is converted to a ** b ** c
+    return astUtils.getPrecedence(exponent) < PRECEDENCE_OF_EXPONENTIATION_EXPR;
+}
+
+/**
+ * Determines whether an exponentiation binary expression at the place of the given node would need parens.
+ * @param {ASTNode} node A node that would be replaced by an exponentiation binary expression.
+ * @param {SourceCode} sourceCode A SourceCode object.
+ * @returns {boolean} `true` if the expression needs to be parenthesised.
+ */
+function doesExponentiationExpressionNeedParens(node, sourceCode) {
+    const parent = node.parent.type === "ChainExpression" ? node.parent.parent : node.parent;
+
+    const parentPrecedence = astUtils.getPrecedence(parent);
+    const needsParens = (
+        parent.type === "ClassDeclaration" ||
+        (
+            parent.type.endsWith("Expression") &&
+            (parentPrecedence === -1 || parentPrecedence >= PRECEDENCE_OF_EXPONENTIATION_EXPR) &&
+            !(parent.type === "BinaryExpression" && parent.operator === "**" && parent.right === node) &&
+            !((parent.type === "CallExpression" || parent.type === "NewExpression") && parent.arguments.includes(node)) &&
+            !(parent.type === "MemberExpression" && parent.computed && parent.property === node) &&
+            !(parent.type === "ArrayExpression")
+        )
+    );
+
+    return needsParens && !astUtils.isParenthesised(sourceCode, node);
+}
+
+/**
+ * Optionally parenthesizes given text.
+ * @param {string} text The text to parenthesize.
+ * @param {boolean} shouldParenthesize If `true`, the text will be parenthesised.
+ * @returns {string} parenthesised or unchanged text.
+ */
+function parenthesizeIfShould(text, shouldParenthesize) {
+    return shouldParenthesize ? `(${text})` : text;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow the use of `Math.pow` in favor of the `**` operator",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-exponentiation-operator"
+        },
+
+        schema: [],
+        fixable: "code",
+
+        messages: {
+            useExponentiation: "Use the '**' operator instead of 'Math.pow'."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Reports the given node.
+         * @param {ASTNode} node 'Math.pow()' node to report.
+         * @returns {void}
+         */
+        function report(node) {
+            context.report({
+                node,
+                messageId: "useExponentiation",
+                fix(fixer) {
+                    if (
+                        node.arguments.length !== 2 ||
+                        node.arguments.some(arg => arg.type === "SpreadElement") ||
+                        sourceCode.getCommentsInside(node).length > 0
+                    ) {
+                        return null;
+                    }
+
+                    const base = node.arguments[0],
+                        exponent = node.arguments[1],
+                        baseText = sourceCode.getText(base),
+                        exponentText = sourceCode.getText(exponent),
+                        shouldParenthesizeBase = doesBaseNeedParens(base),
+                        shouldParenthesizeExponent = doesExponentNeedParens(exponent),
+                        shouldParenthesizeAll = doesExponentiationExpressionNeedParens(node, sourceCode);
+
+                    let prefix = "",
+                        suffix = "";
+
+                    if (!shouldParenthesizeAll) {
+                        if (!shouldParenthesizeBase) {
+                            const firstReplacementToken = sourceCode.getFirstToken(base),
+                                tokenBefore = sourceCode.getTokenBefore(node);
+
+                            if (
+                                tokenBefore &&
+                                tokenBefore.range[1] === node.range[0] &&
+                                !astUtils.canTokensBeAdjacent(tokenBefore, firstReplacementToken)
+                            ) {
+                                prefix = " "; // a+Math.pow(++b, c) -> a+ ++b**c
+                            }
+                        }
+                        if (!shouldParenthesizeExponent) {
+                            const lastReplacementToken = sourceCode.getLastToken(exponent),
+                                tokenAfter = sourceCode.getTokenAfter(node);
+
+                            if (
+                                tokenAfter &&
+                                node.range[1] === tokenAfter.range[0] &&
+                                !astUtils.canTokensBeAdjacent(lastReplacementToken, tokenAfter)
+                            ) {
+                                suffix = " "; // Math.pow(a, b)in c -> a**b in c
+                            }
+                        }
+                    }
+
+                    const baseReplacement = parenthesizeIfShould(baseText, shouldParenthesizeBase),
+                        exponentReplacement = parenthesizeIfShould(exponentText, shouldParenthesizeExponent),
+                        replacement = parenthesizeIfShould(`${baseReplacement}**${exponentReplacement}`, shouldParenthesizeAll);
+
+                    return fixer.replaceText(node, `${prefix}${replacement}${suffix}`);
+                }
+            });
+        }
+
+        return {
+            Program(node) {
+                const scope = sourceCode.getScope(node);
+                const tracker = new ReferenceTracker(scope);
+                const trackMap = {
+                    Math: {
+                        pow: { [CALL]: true }
+                    }
+                };
+
+                for (const { node: refNode } of tracker.iterateGlobalReferences(trackMap)) {
+                    report(refNode);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/prefer-named-capture-group.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/prefer-named-capture-group.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/prefer-named-capture-group.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,178 @@
+/**
+ * @fileoverview Rule to enforce requiring named capture groups in regular expression.
+ * @author Pig Fang <https://github.com/g-plane>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const {
+    CALL,
+    CONSTRUCT,
+    ReferenceTracker,
+    getStringIfConstant
+} = require("@eslint-community/eslint-utils");
+const regexpp = require("@eslint-community/regexpp");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const parser = new regexpp.RegExpParser();
+
+/**
+ * Creates fixer suggestions for the regex, if statically determinable.
+ * @param {number} groupStart Starting index of the regex group.
+ * @param {string} pattern The regular expression pattern to be checked.
+ * @param {string} rawText Source text of the regexNode.
+ * @param {ASTNode} regexNode AST node which contains the regular expression.
+ * @returns {Array<SuggestionResult>} Fixer suggestions for the regex, if statically determinable.
+ */
+function suggestIfPossible(groupStart, pattern, rawText, regexNode) {
+    switch (regexNode.type) {
+        case "Literal":
+            if (typeof regexNode.value === "string" && rawText.includes("\\")) {
+                return null;
+            }
+            break;
+        case "TemplateLiteral":
+            if (regexNode.expressions.length || rawText.slice(1, -1) !== pattern) {
+                return null;
+            }
+            break;
+        default:
+            return null;
+    }
+
+    const start = regexNode.range[0] + groupStart + 2;
+
+    return [
+        {
+            fix(fixer) {
+                const existingTemps = pattern.match(/temp\d+/gu) || [];
+                const highestTempCount = existingTemps.reduce(
+                    (previous, next) =>
+                        Math.max(previous, Number(next.slice("temp".length))),
+                    0
+                );
+
+                return fixer.insertTextBeforeRange(
+                    [start, start],
+                    `?<temp${highestTempCount + 1}>`
+                );
+            },
+            messageId: "addGroupName"
+        },
+        {
+            fix(fixer) {
+                return fixer.insertTextBeforeRange(
+                    [start, start],
+                    "?:"
+                );
+            },
+            messageId: "addNonCapture"
+        }
+    ];
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce using named capture group in regular expression",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-named-capture-group"
+        },
+
+        hasSuggestions: true,
+
+        schema: [],
+
+        messages: {
+            addGroupName: "Add name to capture group.",
+            addNonCapture: "Convert group to non-capturing.",
+            required: "Capture group '{{group}}' should be converted to a named or non-capturing group."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Function to check regular expression.
+         * @param {string} pattern The regular expression pattern to be checked.
+         * @param {ASTNode} node AST node which contains the regular expression or a call/new expression.
+         * @param {ASTNode} regexNode AST node which contains the regular expression.
+         * @param {string|null} flags The regular expression flags to be checked.
+         * @returns {void}
+         */
+        function checkRegex(pattern, node, regexNode, flags) {
+            let ast;
+
+            try {
+                ast = parser.parsePattern(pattern, 0, pattern.length, {
+                    unicode: Boolean(flags && flags.includes("u")),
+                    unicodeSets: Boolean(flags && flags.includes("v"))
+                });
+            } catch {
+
+                // ignore regex syntax errors
+                return;
+            }
+
+            regexpp.visitRegExpAST(ast, {
+                onCapturingGroupEnter(group) {
+                    if (!group.name) {
+                        const rawText = sourceCode.getText(regexNode);
+                        const suggest = suggestIfPossible(group.start, pattern, rawText, regexNode);
+
+                        context.report({
+                            node,
+                            messageId: "required",
+                            data: {
+                                group: group.raw
+                            },
+                            suggest
+                        });
+                    }
+                }
+            });
+        }
+
+        return {
+            Literal(node) {
+                if (node.regex) {
+                    checkRegex(node.regex.pattern, node, node, node.regex.flags);
+                }
+            },
+            Program(node) {
+                const scope = sourceCode.getScope(node);
+                const tracker = new ReferenceTracker(scope);
+                const traceMap = {
+                    RegExp: {
+                        [CALL]: true,
+                        [CONSTRUCT]: true
+                    }
+                };
+
+                for (const { node: refNode } of tracker.iterateGlobalReferences(traceMap)) {
+                    const regex = getStringIfConstant(refNode.arguments[0]);
+                    const flags = getStringIfConstant(refNode.arguments[1]);
+
+                    if (regex) {
+                        checkRegex(regex, refNode, refNode.arguments[0], flags);
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/prefer-numeric-literals.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/prefer-numeric-literals.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/prefer-numeric-literals.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,148 @@
+/**
+ * @fileoverview Rule to disallow `parseInt()` in favor of binary, octal, and hexadecimal literals
+ * @author Annie Zhang, Henry Zhu
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const radixMap = new Map([
+    [2, { system: "binary", literalPrefix: "0b" }],
+    [8, { system: "octal", literalPrefix: "0o" }],
+    [16, { system: "hexadecimal", literalPrefix: "0x" }]
+]);
+
+/**
+ * Checks to see if a CallExpression's callee node is `parseInt` or
+ * `Number.parseInt`.
+ * @param {ASTNode} calleeNode The callee node to evaluate.
+ * @returns {boolean} True if the callee is `parseInt` or `Number.parseInt`,
+ * false otherwise.
+ */
+function isParseInt(calleeNode) {
+    return (
+        astUtils.isSpecificId(calleeNode, "parseInt") ||
+        astUtils.isSpecificMemberAccess(calleeNode, "Number", "parseInt")
+    );
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow `parseInt()` and `Number.parseInt()` in favor of binary, octal, and hexadecimal literals",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-numeric-literals"
+        },
+
+        schema: [],
+
+        messages: {
+            useLiteral: "Use {{system}} literals instead of {{functionName}}()."
+        },
+
+        fixable: "code"
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+
+            "CallExpression[arguments.length=2]"(node) {
+                const [strNode, radixNode] = node.arguments,
+                    str = astUtils.getStaticStringValue(strNode),
+                    radix = radixNode.value;
+
+                if (
+                    str !== null &&
+                    astUtils.isStringLiteral(strNode) &&
+                    radixNode.type === "Literal" &&
+                    typeof radix === "number" &&
+                    radixMap.has(radix) &&
+                    isParseInt(node.callee)
+                ) {
+
+                    const { system, literalPrefix } = radixMap.get(radix);
+
+                    context.report({
+                        node,
+                        messageId: "useLiteral",
+                        data: {
+                            system,
+                            functionName: sourceCode.getText(node.callee)
+                        },
+                        fix(fixer) {
+                            if (sourceCode.getCommentsInside(node).length) {
+                                return null;
+                            }
+
+                            const replacement = `${literalPrefix}${str}`;
+
+                            if (+replacement !== parseInt(str, radix)) {
+
+                                /*
+                                 * If the newly-produced literal would be invalid, (e.g. 0b1234),
+                                 * or it would yield an incorrect parseInt result for some other reason, don't make a fix.
+                                 *
+                                 * If `str` had numeric separators, `+replacement` will evaluate to `NaN` because unary `+`
+                                 * per the specification doesn't support numeric separators. Thus, the above condition will be `true`
+                                 * (`NaN !== anything` is always `true`) regardless of the `parseInt(str, radix)` value.
+                                 * Consequently, no autofixes will be made. This is correct behavior because `parseInt` also
+                                 * doesn't support numeric separators, but it does parse part of the string before the first `_`,
+                                 * so the autofix would be invalid:
+                                 *
+                                 *   parseInt("1_1", 2) // === 1
+                                 *   0b1_1 // === 3
+                                 */
+                                return null;
+                            }
+
+                            const tokenBefore = sourceCode.getTokenBefore(node),
+                                tokenAfter = sourceCode.getTokenAfter(node);
+                            let prefix = "",
+                                suffix = "";
+
+                            if (
+                                tokenBefore &&
+                                tokenBefore.range[1] === node.range[0] &&
+                                !astUtils.canTokensBeAdjacent(tokenBefore, replacement)
+                            ) {
+                                prefix = " ";
+                            }
+
+                            if (
+                                tokenAfter &&
+                                node.range[1] === tokenAfter.range[0] &&
+                                !astUtils.canTokensBeAdjacent(replacement, tokenAfter)
+                            ) {
+                                suffix = " ";
+                            }
+
+                            return fixer.replaceText(node, `${prefix}${replacement}${suffix}`);
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/prefer-object-has-own.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/prefer-object-has-own.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/prefer-object-has-own.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,114 @@
+/**
+ * @fileoverview Prefers Object.hasOwn() instead of Object.prototype.hasOwnProperty.call()
+ * @author Nitin Kumar
+ * @author Gautam Arora
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks if the given node is considered to be an access to a property of `Object.prototype`.
+ * @param {ASTNode} node `MemberExpression` node to evaluate.
+ * @returns {boolean} `true` if `node.object` is `Object`, `Object.prototype`, or `{}` (empty 'ObjectExpression' node).
+ */
+function hasLeftHandObject(node) {
+
+    /*
+     * ({}).hasOwnProperty.call(obj, prop) - `true`
+     * ({ foo }.hasOwnProperty.call(obj, prop)) - `false`, object literal should be empty
+     */
+    if (node.object.type === "ObjectExpression" && node.object.properties.length === 0) {
+        return true;
+    }
+
+    const objectNodeToCheck = node.object.type === "MemberExpression" && astUtils.getStaticPropertyName(node.object) === "prototype" ? node.object.object : node.object;
+
+    if (objectNodeToCheck.type === "Identifier" && objectNodeToCheck.name === "Object") {
+        return true;
+    }
+
+    return false;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+        docs: {
+            description:
+                "Disallow use of `Object.prototype.hasOwnProperty.call()` and prefer use of `Object.hasOwn()`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-object-has-own"
+        },
+        schema: [],
+        messages: {
+            useHasOwn: "Use 'Object.hasOwn()' instead of 'Object.prototype.hasOwnProperty.call()'."
+        },
+        fixable: "code"
+    },
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        return {
+            CallExpression(node) {
+                if (!(node.callee.type === "MemberExpression" && node.callee.object.type === "MemberExpression")) {
+                    return;
+                }
+
+                const calleePropertyName = astUtils.getStaticPropertyName(node.callee);
+                const objectPropertyName = astUtils.getStaticPropertyName(node.callee.object);
+                const isObject = hasLeftHandObject(node.callee.object);
+
+                // check `Object` scope
+                const scope = sourceCode.getScope(node);
+                const variable = astUtils.getVariableByName(scope, "Object");
+
+                if (
+                    calleePropertyName === "call" &&
+                    objectPropertyName === "hasOwnProperty" &&
+                    isObject &&
+                    variable && variable.scope.type === "global"
+                ) {
+                    context.report({
+                        node,
+                        messageId: "useHasOwn",
+                        fix(fixer) {
+
+                            if (sourceCode.getCommentsInside(node.callee).length > 0) {
+                                return null;
+                            }
+
+                            const tokenJustBeforeNode = sourceCode.getTokenBefore(node.callee, { includeComments: true });
+
+                            // for https://github.com/eslint/eslint/pull/15346#issuecomment-991417335
+                            if (
+                                tokenJustBeforeNode &&
+                                tokenJustBeforeNode.range[1] === node.callee.range[0] &&
+                                !astUtils.canTokensBeAdjacent(tokenJustBeforeNode, "Object.hasOwn")
+                            ) {
+                                return fixer.replaceText(node.callee, " Object.hasOwn");
+                            }
+
+                            return fixer.replaceText(node.callee, "Object.hasOwn");
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/prefer-object-spread.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/prefer-object-spread.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/prefer-object-spread.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,298 @@
+/**
+ * @fileoverview Prefers object spread property over Object.assign
+ * @author Sharmila Jesupaul
+ */
+
+"use strict";
+
+const { CALL, ReferenceTracker } = require("@eslint-community/eslint-utils");
+const {
+    isCommaToken,
+    isOpeningParenToken,
+    isClosingParenToken,
+    isParenthesised
+} = require("./utils/ast-utils");
+
+const ANY_SPACE = /\s/u;
+
+/**
+ * Helper that checks if the Object.assign call has array spread
+ * @param {ASTNode} node The node that the rule warns on
+ * @returns {boolean} - Returns true if the Object.assign call has array spread
+ */
+function hasArraySpread(node) {
+    return node.arguments.some(arg => arg.type === "SpreadElement");
+}
+
+/**
+ * Determines whether the given node is an accessor property (getter/setter).
+ * @param {ASTNode} node Node to check.
+ * @returns {boolean} `true` if the node is a getter or a setter.
+ */
+function isAccessorProperty(node) {
+    return node.type === "Property" &&
+        (node.kind === "get" || node.kind === "set");
+}
+
+/**
+ * Determines whether the given object expression node has accessor properties (getters/setters).
+ * @param {ASTNode} node `ObjectExpression` node to check.
+ * @returns {boolean} `true` if the node has at least one getter/setter.
+ */
+function hasAccessors(node) {
+    return node.properties.some(isAccessorProperty);
+}
+
+/**
+ * Determines whether the given call expression node has object expression arguments with accessor properties (getters/setters).
+ * @param {ASTNode} node `CallExpression` node to check.
+ * @returns {boolean} `true` if the node has at least one argument that is an object expression with at least one getter/setter.
+ */
+function hasArgumentsWithAccessors(node) {
+    return node.arguments
+        .filter(arg => arg.type === "ObjectExpression")
+        .some(hasAccessors);
+}
+
+/**
+ * Helper that checks if the node needs parentheses to be valid JS.
+ * The default is to wrap the node in parentheses to avoid parsing errors.
+ * @param {ASTNode} node The node that the rule warns on
+ * @param {Object} sourceCode in context sourcecode object
+ * @returns {boolean} - Returns true if the node needs parentheses
+ */
+function needsParens(node, sourceCode) {
+    const parent = node.parent;
+
+    switch (parent.type) {
+        case "VariableDeclarator":
+        case "ArrayExpression":
+        case "ReturnStatement":
+        case "CallExpression":
+        case "Property":
+            return false;
+        case "AssignmentExpression":
+            return parent.left === node && !isParenthesised(sourceCode, node);
+        default:
+            return !isParenthesised(sourceCode, node);
+    }
+}
+
+/**
+ * Determines if an argument needs parentheses. The default is to not add parens.
+ * @param {ASTNode} node The node to be checked.
+ * @param {Object} sourceCode in context sourcecode object
+ * @returns {boolean} True if the node needs parentheses
+ */
+function argNeedsParens(node, sourceCode) {
+    switch (node.type) {
+        case "AssignmentExpression":
+        case "ArrowFunctionExpression":
+        case "ConditionalExpression":
+            return !isParenthesised(sourceCode, node);
+        default:
+            return false;
+    }
+}
+
+/**
+ * Get the parenthesis tokens of a given ObjectExpression node.
+ * This includes the braces of the object literal and enclosing parentheses.
+ * @param {ASTNode} node The node to get.
+ * @param {Token} leftArgumentListParen The opening paren token of the argument list.
+ * @param {SourceCode} sourceCode The source code object to get tokens.
+ * @returns {Token[]} The parenthesis tokens of the node. This is sorted by the location.
+ */
+function getParenTokens(node, leftArgumentListParen, sourceCode) {
+    const parens = [sourceCode.getFirstToken(node), sourceCode.getLastToken(node)];
+    let leftNext = sourceCode.getTokenBefore(node);
+    let rightNext = sourceCode.getTokenAfter(node);
+
+    // Note: don't include the parens of the argument list.
+    while (
+        leftNext &&
+        rightNext &&
+        leftNext.range[0] > leftArgumentListParen.range[0] &&
+        isOpeningParenToken(leftNext) &&
+        isClosingParenToken(rightNext)
+    ) {
+        parens.push(leftNext, rightNext);
+        leftNext = sourceCode.getTokenBefore(leftNext);
+        rightNext = sourceCode.getTokenAfter(rightNext);
+    }
+
+    return parens.sort((a, b) => a.range[0] - b.range[0]);
+}
+
+/**
+ * Get the range of a given token and around whitespaces.
+ * @param {Token} token The token to get range.
+ * @param {SourceCode} sourceCode The source code object to get tokens.
+ * @returns {number} The end of the range of the token and around whitespaces.
+ */
+function getStartWithSpaces(token, sourceCode) {
+    const text = sourceCode.text;
+    let start = token.range[0];
+
+    // If the previous token is a line comment then skip this step to avoid commenting this token out.
+    {
+        const prevToken = sourceCode.getTokenBefore(token, { includeComments: true });
+
+        if (prevToken && prevToken.type === "Line") {
+            return start;
+        }
+    }
+
+    // Detect spaces before the token.
+    while (ANY_SPACE.test(text[start - 1] || "")) {
+        start -= 1;
+    }
+
+    return start;
+}
+
+/**
+ * Get the range of a given token and around whitespaces.
+ * @param {Token} token The token to get range.
+ * @param {SourceCode} sourceCode The source code object to get tokens.
+ * @returns {number} The start of the range of the token and around whitespaces.
+ */
+function getEndWithSpaces(token, sourceCode) {
+    const text = sourceCode.text;
+    let end = token.range[1];
+
+    // Detect spaces after the token.
+    while (ANY_SPACE.test(text[end] || "")) {
+        end += 1;
+    }
+
+    return end;
+}
+
+/**
+ * Autofixes the Object.assign call to use an object spread instead.
+ * @param {ASTNode|null} node The node that the rule warns on, i.e. the Object.assign call
+ * @param {string} sourceCode sourceCode of the Object.assign call
+ * @returns {Function} autofixer - replaces the Object.assign with a spread object.
+ */
+function defineFixer(node, sourceCode) {
+    return function *(fixer) {
+        const leftParen = sourceCode.getTokenAfter(node.callee, isOpeningParenToken);
+        const rightParen = sourceCode.getLastToken(node);
+
+        // Remove everything before the opening paren: callee `Object.assign`, type arguments, and whitespace between the callee and the paren.
+        yield fixer.removeRange([node.range[0], leftParen.range[0]]);
+
+        // Replace the parens of argument list to braces.
+        if (needsParens(node, sourceCode)) {
+            yield fixer.replaceText(leftParen, "({");
+            yield fixer.replaceText(rightParen, "})");
+        } else {
+            yield fixer.replaceText(leftParen, "{");
+            yield fixer.replaceText(rightParen, "}");
+        }
+
+        // Process arguments.
+        for (const argNode of node.arguments) {
+            const innerParens = getParenTokens(argNode, leftParen, sourceCode);
+            const left = innerParens.shift();
+            const right = innerParens.pop();
+
+            if (argNode.type === "ObjectExpression") {
+                const maybeTrailingComma = sourceCode.getLastToken(argNode, 1);
+                const maybeArgumentComma = sourceCode.getTokenAfter(right);
+
+                /*
+                 * Make bare this object literal.
+                 * And remove spaces inside of the braces for better formatting.
+                 */
+                for (const innerParen of innerParens) {
+                    yield fixer.remove(innerParen);
+                }
+                const leftRange = [left.range[0], getEndWithSpaces(left, sourceCode)];
+                const rightRange = [
+                    Math.max(getStartWithSpaces(right, sourceCode), leftRange[1]), // Ensure ranges don't overlap
+                    right.range[1]
+                ];
+
+                yield fixer.removeRange(leftRange);
+                yield fixer.removeRange(rightRange);
+
+                // Remove the comma of this argument if it's duplication.
+                if (
+                    (argNode.properties.length === 0 || isCommaToken(maybeTrailingComma)) &&
+                    isCommaToken(maybeArgumentComma)
+                ) {
+                    yield fixer.remove(maybeArgumentComma);
+                }
+            } else {
+
+                // Make spread.
+                if (argNeedsParens(argNode, sourceCode)) {
+                    yield fixer.insertTextBefore(left, "...(");
+                    yield fixer.insertTextAfter(right, ")");
+                } else {
+                    yield fixer.insertTextBefore(left, "...");
+                }
+            }
+        }
+    };
+}
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description:
+                "Disallow using Object.assign with an object literal as the first argument and prefer the use of object spread instead",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-object-spread"
+        },
+
+        schema: [],
+        fixable: "code",
+
+        messages: {
+            useSpreadMessage: "Use an object spread instead of `Object.assign` eg: `{ ...foo }`.",
+            useLiteralMessage: "Use an object literal instead of `Object.assign`. eg: `{ foo: bar }`."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        return {
+            Program(node) {
+                const scope = sourceCode.getScope(node);
+                const tracker = new ReferenceTracker(scope);
+                const trackMap = {
+                    Object: {
+                        assign: { [CALL]: true }
+                    }
+                };
+
+                // Iterate all calls of `Object.assign` (only of the global variable `Object`).
+                for (const { node: refNode } of tracker.iterateGlobalReferences(trackMap)) {
+                    if (
+                        refNode.arguments.length >= 1 &&
+                        refNode.arguments[0].type === "ObjectExpression" &&
+                        !hasArraySpread(refNode) &&
+                        !(
+                            refNode.arguments.length > 1 &&
+                            hasArgumentsWithAccessors(refNode)
+                        )
+                    ) {
+                        const messageId = refNode.arguments.length === 1
+                            ? "useLiteralMessage"
+                            : "useSpreadMessage";
+                        const fix = defineFixer(refNode, sourceCode);
+
+                        context.report({ node: refNode, messageId, fix });
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/prefer-promise-reject-errors.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/prefer-promise-reject-errors.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/prefer-promise-reject-errors.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,132 @@
+/**
+ * @fileoverview restrict values that can be used as Promise rejection reasons
+ * @author Teddy Katz
+ */
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require using Error objects as Promise rejection reasons",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-promise-reject-errors"
+        },
+
+        fixable: null,
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowEmptyReject: { type: "boolean", default: false }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            rejectAnError: "Expected the Promise rejection reason to be an Error."
+        }
+    },
+
+    create(context) {
+
+        const ALLOW_EMPTY_REJECT = context.options.length && context.options[0].allowEmptyReject;
+        const sourceCode = context.sourceCode;
+
+        //----------------------------------------------------------------------
+        // Helpers
+        //----------------------------------------------------------------------
+
+        /**
+         * Checks the argument of a reject() or Promise.reject() CallExpression, and reports it if it can't be an Error
+         * @param {ASTNode} callExpression A CallExpression node which is used to reject a Promise
+         * @returns {void}
+         */
+        function checkRejectCall(callExpression) {
+            if (!callExpression.arguments.length && ALLOW_EMPTY_REJECT) {
+                return;
+            }
+            if (
+                !callExpression.arguments.length ||
+                !astUtils.couldBeError(callExpression.arguments[0]) ||
+                callExpression.arguments[0].type === "Identifier" && callExpression.arguments[0].name === "undefined"
+            ) {
+                context.report({
+                    node: callExpression,
+                    messageId: "rejectAnError"
+                });
+            }
+        }
+
+        /**
+         * Determines whether a function call is a Promise.reject() call
+         * @param {ASTNode} node A CallExpression node
+         * @returns {boolean} `true` if the call is a Promise.reject() call
+         */
+        function isPromiseRejectCall(node) {
+            return astUtils.isSpecificMemberAccess(node.callee, "Promise", "reject");
+        }
+
+        //----------------------------------------------------------------------
+        // Public
+        //----------------------------------------------------------------------
+
+        return {
+
+            // Check `Promise.reject(value)` calls.
+            CallExpression(node) {
+                if (isPromiseRejectCall(node)) {
+                    checkRejectCall(node);
+                }
+            },
+
+            /*
+             * Check for `new Promise((resolve, reject) => {})`, and check for reject() calls.
+             * This function is run on "NewExpression:exit" instead of "NewExpression" to ensure that
+             * the nodes in the expression already have the `parent` property.
+             */
+            "NewExpression:exit"(node) {
+                if (
+                    node.callee.type === "Identifier" && node.callee.name === "Promise" &&
+                    node.arguments.length && astUtils.isFunction(node.arguments[0]) &&
+                    node.arguments[0].params.length > 1 && node.arguments[0].params[1].type === "Identifier"
+                ) {
+                    sourceCode.getDeclaredVariables(node.arguments[0])
+
+                        /*
+                         * Find the first variable that matches the second parameter's name.
+                         * If the first parameter has the same name as the second parameter, then the variable will actually
+                         * be "declared" when the first parameter is evaluated, but then it will be immediately overwritten
+                         * by the second parameter. It's not possible for an expression with the variable to be evaluated before
+                         * the variable is overwritten, because functions with duplicate parameters cannot have destructuring or
+                         * default assignments in their parameter lists. Therefore, it's not necessary to explicitly account for
+                         * this case.
+                         */
+                        .find(variable => variable.name === node.arguments[0].params[1].name)
+
+                        // Get the references to that variable.
+                        .references
+
+                        // Only check the references that read the parameter's value.
+                        .filter(ref => ref.isRead())
+
+                        // Only check the references that are used as the callee in a function call, e.g. `reject(foo)`.
+                        .filter(ref => ref.identifier.parent.type === "CallExpression" && ref.identifier === ref.identifier.parent.callee)
+
+                        // Check the argument of the function call to determine whether it's an Error.
+                        .forEach(ref => checkRejectCall(ref.identifier.parent));
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/prefer-reflect.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/prefer-reflect.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/prefer-reflect.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,127 @@
+/**
+ * @fileoverview Rule to suggest using "Reflect" api over Function/Object methods
+ * @author Keith Cirkel <http://keithcirkel.co.uk>
+ * @deprecated in ESLint v3.9.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require `Reflect` methods where applicable",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-reflect"
+        },
+
+        deprecated: true,
+
+        replacedBy: [],
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    exceptions: {
+                        type: "array",
+                        items: {
+                            enum: [
+                                "apply",
+                                "call",
+                                "delete",
+                                "defineProperty",
+                                "getOwnPropertyDescriptor",
+                                "getPrototypeOf",
+                                "setPrototypeOf",
+                                "isExtensible",
+                                "getOwnPropertyNames",
+                                "preventExtensions"
+                            ]
+                        },
+                        uniqueItems: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            preferReflect: "Avoid using {{existing}}, instead use {{substitute}}."
+        }
+    },
+
+    create(context) {
+        const existingNames = {
+            apply: "Function.prototype.apply",
+            call: "Function.prototype.call",
+            defineProperty: "Object.defineProperty",
+            getOwnPropertyDescriptor: "Object.getOwnPropertyDescriptor",
+            getPrototypeOf: "Object.getPrototypeOf",
+            setPrototypeOf: "Object.setPrototypeOf",
+            isExtensible: "Object.isExtensible",
+            getOwnPropertyNames: "Object.getOwnPropertyNames",
+            preventExtensions: "Object.preventExtensions"
+        };
+
+        const reflectSubstitutes = {
+            apply: "Reflect.apply",
+            call: "Reflect.apply",
+            defineProperty: "Reflect.defineProperty",
+            getOwnPropertyDescriptor: "Reflect.getOwnPropertyDescriptor",
+            getPrototypeOf: "Reflect.getPrototypeOf",
+            setPrototypeOf: "Reflect.setPrototypeOf",
+            isExtensible: "Reflect.isExtensible",
+            getOwnPropertyNames: "Reflect.getOwnPropertyNames",
+            preventExtensions: "Reflect.preventExtensions"
+        };
+
+        const exceptions = (context.options[0] || {}).exceptions || [];
+
+        /**
+         * Reports the Reflect violation based on the `existing` and `substitute`
+         * @param {Object} node The node that violates the rule.
+         * @param {string} existing The existing method name that has been used.
+         * @param {string} substitute The Reflect substitute that should be used.
+         * @returns {void}
+         */
+        function report(node, existing, substitute) {
+            context.report({
+                node,
+                messageId: "preferReflect",
+                data: {
+                    existing,
+                    substitute
+                }
+            });
+        }
+
+        return {
+            CallExpression(node) {
+                const methodName = (node.callee.property || {}).name;
+                const isReflectCall = (node.callee.object || {}).name === "Reflect";
+                const hasReflectSubstitute = Object.prototype.hasOwnProperty.call(reflectSubstitutes, methodName);
+                const userConfiguredException = exceptions.includes(methodName);
+
+                if (hasReflectSubstitute && !isReflectCall && !userConfiguredException) {
+                    report(node, existingNames[methodName], reflectSubstitutes[methodName]);
+                }
+            },
+            UnaryExpression(node) {
+                const isDeleteOperator = node.operator === "delete";
+                const targetsIdentifier = node.argument.type === "Identifier";
+                const userConfiguredException = exceptions.includes("delete");
+
+                if (isDeleteOperator && !targetsIdentifier && !userConfiguredException) {
+                    report(node, "the delete keyword", "Reflect.deleteProperty");
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/prefer-regex-literals.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/prefer-regex-literals.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/prefer-regex-literals.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,507 @@
+/**
+ * @fileoverview Rule to disallow use of the `RegExp` constructor in favor of regular expression literals
+ * @author Milos Djermanovic
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const { CALL, CONSTRUCT, ReferenceTracker, findVariable } = require("@eslint-community/eslint-utils");
+const { RegExpValidator, visitRegExpAST, RegExpParser } = require("@eslint-community/regexpp");
+const { canTokensBeAdjacent } = require("./utils/ast-utils");
+const { REGEXPP_LATEST_ECMA_VERSION } = require("./utils/regular-expressions");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines whether the given node is a string literal.
+ * @param {ASTNode} node Node to check.
+ * @returns {boolean} True if the node is a string literal.
+ */
+function isStringLiteral(node) {
+    return node.type === "Literal" && typeof node.value === "string";
+}
+
+/**
+ * Determines whether the given node is a regex literal.
+ * @param {ASTNode} node Node to check.
+ * @returns {boolean} True if the node is a regex literal.
+ */
+function isRegexLiteral(node) {
+    return node.type === "Literal" && Object.prototype.hasOwnProperty.call(node, "regex");
+}
+
+const validPrecedingTokens = new Set([
+    "(",
+    ";",
+    "[",
+    ",",
+    "=",
+    "+",
+    "*",
+    "-",
+    "?",
+    "~",
+    "%",
+    "**",
+    "!",
+    "typeof",
+    "instanceof",
+    "&&",
+    "||",
+    "??",
+    "return",
+    "...",
+    "delete",
+    "void",
+    "in",
+    "<",
+    ">",
+    "<=",
+    ">=",
+    "==",
+    "===",
+    "!=",
+    "!==",
+    "<<",
+    ">>",
+    ">>>",
+    "&",
+    "|",
+    "^",
+    ":",
+    "{",
+    "=>",
+    "*=",
+    "<<=",
+    ">>=",
+    ">>>=",
+    "^=",
+    "|=",
+    "&=",
+    "??=",
+    "||=",
+    "&&=",
+    "**=",
+    "+=",
+    "-=",
+    "/=",
+    "%=",
+    "/",
+    "do",
+    "break",
+    "continue",
+    "debugger",
+    "case",
+    "throw"
+]);
+
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow use of the `RegExp` constructor in favor of regular expression literals",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-regex-literals"
+        },
+
+        hasSuggestions: true,
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    disallowRedundantWrapping: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedRegExp: "Use a regular expression literal instead of the 'RegExp' constructor.",
+            replaceWithLiteral: "Replace with an equivalent regular expression literal.",
+            replaceWithLiteralAndFlags: "Replace with an equivalent regular expression literal with flags '{{ flags }}'.",
+            replaceWithIntendedLiteralAndFlags: "Replace with a regular expression literal with flags '{{ flags }}'.",
+            unexpectedRedundantRegExp: "Regular expression literal is unnecessarily wrapped within a 'RegExp' constructor.",
+            unexpectedRedundantRegExpWithFlags: "Use regular expression literal with flags instead of the 'RegExp' constructor."
+        }
+    },
+
+    create(context) {
+        const [{ disallowRedundantWrapping = false } = {}] = context.options;
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Determines whether the given identifier node is a reference to a global variable.
+         * @param {ASTNode} node `Identifier` node to check.
+         * @returns {boolean} True if the identifier is a reference to a global variable.
+         */
+        function isGlobalReference(node) {
+            const scope = sourceCode.getScope(node);
+            const variable = findVariable(scope, node);
+
+            return variable !== null && variable.scope.type === "global" && variable.defs.length === 0;
+        }
+
+        /**
+         * Determines whether the given node is a String.raw`` tagged template expression
+         * with a static template literal.
+         * @param {ASTNode} node Node to check.
+         * @returns {boolean} True if the node is String.raw`` with a static template.
+         */
+        function isStringRawTaggedStaticTemplateLiteral(node) {
+            return node.type === "TaggedTemplateExpression" &&
+                astUtils.isSpecificMemberAccess(node.tag, "String", "raw") &&
+                isGlobalReference(astUtils.skipChainExpression(node.tag).object) &&
+                astUtils.isStaticTemplateLiteral(node.quasi);
+        }
+
+        /**
+         * Gets the value of a string
+         * @param {ASTNode} node The node to get the string of.
+         * @returns {string|null} The value of the node.
+         */
+        function getStringValue(node) {
+            if (isStringLiteral(node)) {
+                return node.value;
+            }
+
+            if (astUtils.isStaticTemplateLiteral(node)) {
+                return node.quasis[0].value.cooked;
+            }
+
+            if (isStringRawTaggedStaticTemplateLiteral(node)) {
+                return node.quasi.quasis[0].value.raw;
+            }
+
+            return null;
+        }
+
+        /**
+         * Determines whether the given node is considered to be a static string by the logic of this rule.
+         * @param {ASTNode} node Node to check.
+         * @returns {boolean} True if the node is a static string.
+         */
+        function isStaticString(node) {
+            return isStringLiteral(node) ||
+                astUtils.isStaticTemplateLiteral(node) ||
+                isStringRawTaggedStaticTemplateLiteral(node);
+        }
+
+        /**
+         * Determines whether the relevant arguments of the given are all static string literals.
+         * @param {ASTNode} node Node to check.
+         * @returns {boolean} True if all arguments are static strings.
+         */
+        function hasOnlyStaticStringArguments(node) {
+            const args = node.arguments;
+
+            if ((args.length === 1 || args.length === 2) && args.every(isStaticString)) {
+                return true;
+            }
+
+            return false;
+        }
+
+        /**
+         * Determines whether the arguments of the given node indicate that a regex literal is unnecessarily wrapped.
+         * @param {ASTNode} node Node to check.
+         * @returns {boolean} True if the node already contains a regex literal argument.
+         */
+        function isUnnecessarilyWrappedRegexLiteral(node) {
+            const args = node.arguments;
+
+            if (args.length === 1 && isRegexLiteral(args[0])) {
+                return true;
+            }
+
+            if (args.length === 2 && isRegexLiteral(args[0]) && isStaticString(args[1])) {
+                return true;
+            }
+
+            return false;
+        }
+
+        /**
+         * Returns a ecmaVersion compatible for regexpp.
+         * @param {number} ecmaVersion The ecmaVersion to convert.
+         * @returns {import("@eslint-community/regexpp/ecma-versions").EcmaVersion} The resulting ecmaVersion compatible for regexpp.
+         */
+        function getRegexppEcmaVersion(ecmaVersion) {
+            if (ecmaVersion <= 5) {
+                return 5;
+            }
+            return Math.min(ecmaVersion, REGEXPP_LATEST_ECMA_VERSION);
+        }
+
+        const regexppEcmaVersion = getRegexppEcmaVersion(context.languageOptions.ecmaVersion);
+
+        /**
+         * Makes a character escaped or else returns null.
+         * @param {string} character The character to escape.
+         * @returns {string} The resulting escaped character.
+         */
+        function resolveEscapes(character) {
+            switch (character) {
+                case "\n":
+                case "\\\n":
+                    return "\\n";
+
+                case "\r":
+                case "\\\r":
+                    return "\\r";
+
+                case "\t":
+                case "\\\t":
+                    return "\\t";
+
+                case "\v":
+                case "\\\v":
+                    return "\\v";
+
+                case "\f":
+                case "\\\f":
+                    return "\\f";
+
+                case "/":
+                    return "\\/";
+
+                default:
+                    return null;
+            }
+        }
+
+        /**
+         * Checks whether the given regex and flags are valid for the ecma version or not.
+         * @param {string} pattern The regex pattern to check.
+         * @param {string | undefined} flags The regex flags to check.
+         * @returns {boolean} True if the given regex pattern and flags are valid for the ecma version.
+         */
+        function isValidRegexForEcmaVersion(pattern, flags) {
+            const validator = new RegExpValidator({ ecmaVersion: regexppEcmaVersion });
+
+            try {
+                validator.validatePattern(pattern, 0, pattern.length, {
+                    unicode: flags ? flags.includes("u") : false,
+                    unicodeSets: flags ? flags.includes("v") : false
+                });
+                if (flags) {
+                    validator.validateFlags(flags);
+                }
+                return true;
+            } catch {
+                return false;
+            }
+        }
+
+        /**
+         * Checks whether two given regex flags contain the same flags or not.
+         * @param {string} flagsA The regex flags.
+         * @param {string} flagsB The regex flags.
+         * @returns {boolean} True if two regex flags contain same flags.
+         */
+        function areFlagsEqual(flagsA, flagsB) {
+            return [...flagsA].sort().join("") === [...flagsB].sort().join("");
+        }
+
+
+        /**
+         * Merges two regex flags.
+         * @param {string} flagsA The regex flags.
+         * @param {string} flagsB The regex flags.
+         * @returns {string} The merged regex flags.
+         */
+        function mergeRegexFlags(flagsA, flagsB) {
+            const flagsSet = new Set([
+                ...flagsA,
+                ...flagsB
+            ]);
+
+            return [...flagsSet].join("");
+        }
+
+        /**
+         * Checks whether a give node can be fixed to the given regex pattern and flags.
+         * @param {ASTNode} node The node to check.
+         * @param {string} pattern The regex pattern to check.
+         * @param {string} flags The regex flags
+         * @returns {boolean} True if a node can be fixed to the given regex pattern and flags.
+         */
+        function canFixTo(node, pattern, flags) {
+            const tokenBefore = sourceCode.getTokenBefore(node);
+
+            return sourceCode.getCommentsInside(node).length === 0 &&
+                (!tokenBefore || validPrecedingTokens.has(tokenBefore.value)) &&
+                isValidRegexForEcmaVersion(pattern, flags);
+        }
+
+        /**
+         * Returns a safe output code considering the before and after tokens.
+         * @param {ASTNode} node The regex node.
+         * @param {string} newRegExpValue The new regex expression value.
+         * @returns {string} The output code.
+         */
+        function getSafeOutput(node, newRegExpValue) {
+            const tokenBefore = sourceCode.getTokenBefore(node);
+            const tokenAfter = sourceCode.getTokenAfter(node);
+
+            return (tokenBefore && !canTokensBeAdjacent(tokenBefore, newRegExpValue) && tokenBefore.range[1] === node.range[0] ? " " : "") +
+                newRegExpValue +
+            (tokenAfter && !canTokensBeAdjacent(newRegExpValue, tokenAfter) && node.range[1] === tokenAfter.range[0] ? " " : "");
+
+        }
+
+        return {
+            Program(node) {
+                const scope = sourceCode.getScope(node);
+                const tracker = new ReferenceTracker(scope);
+                const traceMap = {
+                    RegExp: {
+                        [CALL]: true,
+                        [CONSTRUCT]: true
+                    }
+                };
+
+                for (const { node: refNode } of tracker.iterateGlobalReferences(traceMap)) {
+                    if (disallowRedundantWrapping && isUnnecessarilyWrappedRegexLiteral(refNode)) {
+                        const regexNode = refNode.arguments[0];
+
+                        if (refNode.arguments.length === 2) {
+                            const suggests = [];
+
+                            const argFlags = getStringValue(refNode.arguments[1]) || "";
+
+                            if (canFixTo(refNode, regexNode.regex.pattern, argFlags)) {
+                                suggests.push({
+                                    messageId: "replaceWithLiteralAndFlags",
+                                    pattern: regexNode.regex.pattern,
+                                    flags: argFlags
+                                });
+                            }
+
+                            const literalFlags = regexNode.regex.flags || "";
+                            const mergedFlags = mergeRegexFlags(literalFlags, argFlags);
+
+                            if (
+                                !areFlagsEqual(mergedFlags, argFlags) &&
+                                canFixTo(refNode, regexNode.regex.pattern, mergedFlags)
+                            ) {
+                                suggests.push({
+                                    messageId: "replaceWithIntendedLiteralAndFlags",
+                                    pattern: regexNode.regex.pattern,
+                                    flags: mergedFlags
+                                });
+                            }
+
+                            context.report({
+                                node: refNode,
+                                messageId: "unexpectedRedundantRegExpWithFlags",
+                                suggest: suggests.map(({ flags, pattern, messageId }) => ({
+                                    messageId,
+                                    data: {
+                                        flags
+                                    },
+                                    fix(fixer) {
+                                        return fixer.replaceText(refNode, getSafeOutput(refNode, `/${pattern}/${flags}`));
+                                    }
+                                }))
+                            });
+                        } else {
+                            const outputs = [];
+
+                            if (canFixTo(refNode, regexNode.regex.pattern, regexNode.regex.flags)) {
+                                outputs.push(sourceCode.getText(regexNode));
+                            }
+
+
+                            context.report({
+                                node: refNode,
+                                messageId: "unexpectedRedundantRegExp",
+                                suggest: outputs.map(output => ({
+                                    messageId: "replaceWithLiteral",
+                                    fix(fixer) {
+                                        return fixer.replaceText(
+                                            refNode,
+                                            getSafeOutput(refNode, output)
+                                        );
+                                    }
+                                }))
+                            });
+                        }
+                    } else if (hasOnlyStaticStringArguments(refNode)) {
+                        let regexContent = getStringValue(refNode.arguments[0]);
+                        let noFix = false;
+                        let flags;
+
+                        if (refNode.arguments[1]) {
+                            flags = getStringValue(refNode.arguments[1]);
+                        }
+
+                        if (!canFixTo(refNode, regexContent, flags)) {
+                            noFix = true;
+                        }
+
+                        if (!/^[-a-zA-Z0-9\\[\](){} \t\r\n\v\f!@#$%^&*+^_=/~`.><?,'"|:;]*$/u.test(regexContent)) {
+                            noFix = true;
+                        }
+
+                        if (regexContent && !noFix) {
+                            let charIncrease = 0;
+
+                            const ast = new RegExpParser({ ecmaVersion: regexppEcmaVersion }).parsePattern(regexContent, 0, regexContent.length, {
+                                unicode: flags ? flags.includes("u") : false,
+                                unicodeSets: flags ? flags.includes("v") : false
+                            });
+
+                            visitRegExpAST(ast, {
+                                onCharacterEnter(characterNode) {
+                                    const escaped = resolveEscapes(characterNode.raw);
+
+                                    if (escaped) {
+                                        regexContent =
+                                            regexContent.slice(0, characterNode.start + charIncrease) +
+                                            escaped +
+                                            regexContent.slice(characterNode.end + charIncrease);
+
+                                        if (characterNode.raw.length === 1) {
+                                            charIncrease += 1;
+                                        }
+                                    }
+                                }
+                            });
+                        }
+
+                        const newRegExpValue = `/${regexContent || "(?:)"}/${flags || ""}`;
+
+                        context.report({
+                            node: refNode,
+                            messageId: "unexpectedRegExp",
+                            suggest: noFix ? [] : [{
+                                messageId: "replaceWithLiteral",
+                                fix(fixer) {
+                                    return fixer.replaceText(refNode, getSafeOutput(refNode, newRegExpValue));
+                                }
+                            }]
+                        });
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/prefer-rest-params.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/prefer-rest-params.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/prefer-rest-params.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,118 @@
+/**
+ * @fileoverview Rule to
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Gets the variable object of `arguments` which is defined implicitly.
+ * @param {eslint-scope.Scope} scope A scope to get.
+ * @returns {eslint-scope.Variable} The found variable object.
+ */
+function getVariableOfArguments(scope) {
+    const variables = scope.variables;
+
+    for (let i = 0; i < variables.length; ++i) {
+        const variable = variables[i];
+
+        if (variable.name === "arguments") {
+
+            /*
+             * If there was a parameter which is named "arguments", the implicit "arguments" is not defined.
+             * So does fast return with null.
+             */
+            return (variable.identifiers.length === 0) ? variable : null;
+        }
+    }
+
+    /* c8 ignore next */
+    return null;
+}
+
+/**
+ * Checks if the given reference is not normal member access.
+ *
+ * - arguments         .... true    // not member access
+ * - arguments[i]      .... true    // computed member access
+ * - arguments[0]      .... true    // computed member access
+ * - arguments.length  .... false   // normal member access
+ * @param {eslint-scope.Reference} reference The reference to check.
+ * @returns {boolean} `true` if the reference is not normal member access.
+ */
+function isNotNormalMemberAccess(reference) {
+    const id = reference.identifier;
+    const parent = id.parent;
+
+    return !(
+        parent.type === "MemberExpression" &&
+        parent.object === id &&
+        !parent.computed
+    );
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require rest parameters instead of `arguments`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-rest-params"
+        },
+
+        schema: [],
+
+        messages: {
+            preferRestParams: "Use the rest parameters instead of 'arguments'."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Reports a given reference.
+         * @param {eslint-scope.Reference} reference A reference to report.
+         * @returns {void}
+         */
+        function report(reference) {
+            context.report({
+                node: reference.identifier,
+                loc: reference.identifier.loc,
+                messageId: "preferRestParams"
+            });
+        }
+
+        /**
+         * Reports references of the implicit `arguments` variable if exist.
+         * @param {ASTNode} node The node representing the function.
+         * @returns {void}
+         */
+        function checkForArguments(node) {
+            const argumentsVar = getVariableOfArguments(sourceCode.getScope(node));
+
+            if (argumentsVar) {
+                argumentsVar
+                    .references
+                    .filter(isNotNormalMemberAccess)
+                    .forEach(report);
+            }
+        }
+
+        return {
+            "FunctionDeclaration:exit": checkForArguments,
+            "FunctionExpression:exit": checkForArguments
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/prefer-spread.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/prefer-spread.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/prefer-spread.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,87 @@
+/**
+ * @fileoverview A rule to suggest using of the spread operator instead of `.apply()`.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a node is a `.apply()` for variadic.
+ * @param {ASTNode} node A CallExpression node to check.
+ * @returns {boolean} Whether or not the node is a `.apply()` for variadic.
+ */
+function isVariadicApplyCalling(node) {
+    return (
+        astUtils.isSpecificMemberAccess(node.callee, null, "apply") &&
+        node.arguments.length === 2 &&
+        node.arguments[1].type !== "ArrayExpression" &&
+        node.arguments[1].type !== "SpreadElement"
+    );
+}
+
+/**
+ * Checks whether or not `thisArg` is not changed by `.apply()`.
+ * @param {ASTNode|null} expectedThis The node that is the owner of the applied function.
+ * @param {ASTNode} thisArg The node that is given to the first argument of the `.apply()`.
+ * @param {RuleContext} context The ESLint rule context object.
+ * @returns {boolean} Whether or not `thisArg` is not changed by `.apply()`.
+ */
+function isValidThisArg(expectedThis, thisArg, context) {
+    if (!expectedThis) {
+        return astUtils.isNullOrUndefined(thisArg);
+    }
+    return astUtils.equalTokens(expectedThis, thisArg, context);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require spread operators instead of `.apply()`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-spread"
+        },
+
+        schema: [],
+        fixable: null,
+
+        messages: {
+            preferSpread: "Use the spread operator instead of '.apply()'."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        return {
+            CallExpression(node) {
+                if (!isVariadicApplyCalling(node)) {
+                    return;
+                }
+
+                const applied = astUtils.skipChainExpression(astUtils.skipChainExpression(node.callee).object);
+                const expectedThis = (applied.type === "MemberExpression") ? applied.object : null;
+                const thisArg = node.arguments[0];
+
+                if (isValidThisArg(expectedThis, thisArg, sourceCode)) {
+                    context.report({
+                        node,
+                        messageId: "preferSpread"
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/prefer-template.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/prefer-template.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/prefer-template.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,275 @@
+/**
+ * @fileoverview A rule to suggest using template literals instead of string concatenation.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether or not a given node is a concatenation.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} `true` if the node is a concatenation.
+ */
+function isConcatenation(node) {
+    return node.type === "BinaryExpression" && node.operator === "+";
+}
+
+/**
+ * Gets the top binary expression node for concatenation in parents of a given node.
+ * @param {ASTNode} node A node to get.
+ * @returns {ASTNode} the top binary expression node in parents of a given node.
+ */
+function getTopConcatBinaryExpression(node) {
+    let currentNode = node;
+
+    while (isConcatenation(currentNode.parent)) {
+        currentNode = currentNode.parent;
+    }
+    return currentNode;
+}
+
+/**
+ * Checks whether or not a node contains a string literal with an octal or non-octal decimal escape sequence
+ * @param {ASTNode} node A node to check
+ * @returns {boolean} `true` if at least one string literal within the node contains
+ * an octal or non-octal decimal escape sequence
+ */
+function hasOctalOrNonOctalDecimalEscapeSequence(node) {
+    if (isConcatenation(node)) {
+        return (
+            hasOctalOrNonOctalDecimalEscapeSequence(node.left) ||
+            hasOctalOrNonOctalDecimalEscapeSequence(node.right)
+        );
+    }
+
+    // No need to check TemplateLiterals – would throw parsing error
+    if (node.type === "Literal" && typeof node.value === "string") {
+        return astUtils.hasOctalOrNonOctalDecimalEscapeSequence(node.raw);
+    }
+
+    return false;
+}
+
+/**
+ * Checks whether or not a given binary expression has string literals.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} `true` if the node has string literals.
+ */
+function hasStringLiteral(node) {
+    if (isConcatenation(node)) {
+
+        // `left` is deeper than `right` normally.
+        return hasStringLiteral(node.right) || hasStringLiteral(node.left);
+    }
+    return astUtils.isStringLiteral(node);
+}
+
+/**
+ * Checks whether or not a given binary expression has non string literals.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} `true` if the node has non string literals.
+ */
+function hasNonStringLiteral(node) {
+    if (isConcatenation(node)) {
+
+        // `left` is deeper than `right` normally.
+        return hasNonStringLiteral(node.right) || hasNonStringLiteral(node.left);
+    }
+    return !astUtils.isStringLiteral(node);
+}
+
+/**
+ * Determines whether a given node will start with a template curly expression (`${}`) when being converted to a template literal.
+ * @param {ASTNode} node The node that will be fixed to a template literal
+ * @returns {boolean} `true` if the node will start with a template curly.
+ */
+function startsWithTemplateCurly(node) {
+    if (node.type === "BinaryExpression") {
+        return startsWithTemplateCurly(node.left);
+    }
+    if (node.type === "TemplateLiteral") {
+        return node.expressions.length && node.quasis.length && node.quasis[0].range[0] === node.quasis[0].range[1];
+    }
+    return node.type !== "Literal" || typeof node.value !== "string";
+}
+
+/**
+ * Determines whether a given node end with a template curly expression (`${}`) when being converted to a template literal.
+ * @param {ASTNode} node The node that will be fixed to a template literal
+ * @returns {boolean} `true` if the node will end with a template curly.
+ */
+function endsWithTemplateCurly(node) {
+    if (node.type === "BinaryExpression") {
+        return startsWithTemplateCurly(node.right);
+    }
+    if (node.type === "TemplateLiteral") {
+        return node.expressions.length && node.quasis.length && node.quasis[node.quasis.length - 1].range[0] === node.quasis[node.quasis.length - 1].range[1];
+    }
+    return node.type !== "Literal" || typeof node.value !== "string";
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require template literals instead of string concatenation",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/prefer-template"
+        },
+
+        schema: [],
+        fixable: "code",
+
+        messages: {
+            unexpectedStringConcatenation: "Unexpected string concatenation."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        let done = Object.create(null);
+
+        /**
+         * Gets the non-token text between two nodes, ignoring any other tokens that appear between the two tokens.
+         * @param {ASTNode} node1 The first node
+         * @param {ASTNode} node2 The second node
+         * @returns {string} The text between the nodes, excluding other tokens
+         */
+        function getTextBetween(node1, node2) {
+            const allTokens = [node1].concat(sourceCode.getTokensBetween(node1, node2)).concat(node2);
+            const sourceText = sourceCode.getText();
+
+            return allTokens.slice(0, -1).reduce((accumulator, token, index) => accumulator + sourceText.slice(token.range[1], allTokens[index + 1].range[0]), "");
+        }
+
+        /**
+         * Returns a template literal form of the given node.
+         * @param {ASTNode} currentNode A node that should be converted to a template literal
+         * @param {string} textBeforeNode Text that should appear before the node
+         * @param {string} textAfterNode Text that should appear after the node
+         * @returns {string} A string form of this node, represented as a template literal
+         */
+        function getTemplateLiteral(currentNode, textBeforeNode, textAfterNode) {
+            if (currentNode.type === "Literal" && typeof currentNode.value === "string") {
+
+                /*
+                 * If the current node is a string literal, escape any instances of ${ or ` to prevent them from being interpreted
+                 * as a template placeholder. However, if the code already contains a backslash before the ${ or `
+                 * for some reason, don't add another backslash, because that would change the meaning of the code (it would cause
+                 * an actual backslash character to appear before the dollar sign).
+                 */
+                return `\`${currentNode.raw.slice(1, -1).replace(/\\*(\$\{|`)/gu, matched => {
+                    if (matched.lastIndexOf("\\") % 2) {
+                        return `\\${matched}`;
+                    }
+                    return matched;
+
+                // Unescape any quotes that appear in the original Literal that no longer need to be escaped.
+                }).replace(new RegExp(`\\\\${currentNode.raw[0]}`, "gu"), currentNode.raw[0])}\``;
+            }
+
+            if (currentNode.type === "TemplateLiteral") {
+                return sourceCode.getText(currentNode);
+            }
+
+            if (isConcatenation(currentNode) && hasStringLiteral(currentNode)) {
+                const plusSign = sourceCode.getFirstTokenBetween(currentNode.left, currentNode.right, token => token.value === "+");
+                const textBeforePlus = getTextBetween(currentNode.left, plusSign);
+                const textAfterPlus = getTextBetween(plusSign, currentNode.right);
+                const leftEndsWithCurly = endsWithTemplateCurly(currentNode.left);
+                const rightStartsWithCurly = startsWithTemplateCurly(currentNode.right);
+
+                if (leftEndsWithCurly) {
+
+                    // If the left side of the expression ends with a template curly, add the extra text to the end of the curly bracket.
+                    // `foo${bar}` /* comment */ + 'baz' --> `foo${bar /* comment */  }${baz}`
+                    return getTemplateLiteral(currentNode.left, textBeforeNode, textBeforePlus + textAfterPlus).slice(0, -1) +
+                        getTemplateLiteral(currentNode.right, null, textAfterNode).slice(1);
+                }
+                if (rightStartsWithCurly) {
+
+                    // Otherwise, if the right side of the expression starts with a template curly, add the text there.
+                    // 'foo' /* comment */ + `${bar}baz` --> `foo${ /* comment */  bar}baz`
+                    return getTemplateLiteral(currentNode.left, textBeforeNode, null).slice(0, -1) +
+                        getTemplateLiteral(currentNode.right, textBeforePlus + textAfterPlus, textAfterNode).slice(1);
+                }
+
+                /*
+                 * Otherwise, these nodes should not be combined into a template curly, since there is nowhere to put
+                 * the text between them.
+                 */
+                return `${getTemplateLiteral(currentNode.left, textBeforeNode, null)}${textBeforePlus}+${textAfterPlus}${getTemplateLiteral(currentNode.right, textAfterNode, null)}`;
+            }
+
+            return `\`\${${textBeforeNode || ""}${sourceCode.getText(currentNode)}${textAfterNode || ""}}\``;
+        }
+
+        /**
+         * Returns a fixer object that converts a non-string binary expression to a template literal
+         * @param {SourceCodeFixer} fixer The fixer object
+         * @param {ASTNode} node A node that should be converted to a template literal
+         * @returns {Object} A fix for this binary expression
+         */
+        function fixNonStringBinaryExpression(fixer, node) {
+            const topBinaryExpr = getTopConcatBinaryExpression(node.parent);
+
+            if (hasOctalOrNonOctalDecimalEscapeSequence(topBinaryExpr)) {
+                return null;
+            }
+
+            return fixer.replaceText(topBinaryExpr, getTemplateLiteral(topBinaryExpr, null, null));
+        }
+
+        /**
+         * Reports if a given node is string concatenation with non string literals.
+         * @param {ASTNode} node A node to check.
+         * @returns {void}
+         */
+        function checkForStringConcat(node) {
+            if (!astUtils.isStringLiteral(node) || !isConcatenation(node.parent)) {
+                return;
+            }
+
+            const topBinaryExpr = getTopConcatBinaryExpression(node.parent);
+
+            // Checks whether or not this node had been checked already.
+            if (done[topBinaryExpr.range[0]]) {
+                return;
+            }
+            done[topBinaryExpr.range[0]] = true;
+
+            if (hasNonStringLiteral(topBinaryExpr)) {
+                context.report({
+                    node: topBinaryExpr,
+                    messageId: "unexpectedStringConcatenation",
+                    fix: fixer => fixNonStringBinaryExpression(fixer, node)
+                });
+            }
+        }
+
+        return {
+            Program() {
+                done = Object.create(null);
+            },
+
+            Literal: checkForStringConcat,
+            TemplateLiteral: checkForStringConcat
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/quote-props.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/quote-props.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/quote-props.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,310 @@
+/**
+ * @fileoverview Rule to flag non-quoted property names in object literals.
+ * @author Mathias Bynens <http://mathiasbynens.be/>
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const espree = require("espree");
+const astUtils = require("./utils/ast-utils");
+const keywords = require("./utils/keywords");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "suggestion",
+
+        docs: {
+            description: "Require quotes around object literal property names",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/quote-props"
+        },
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always", "as-needed", "consistent", "consistent-as-needed"]
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 1
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always", "as-needed", "consistent", "consistent-as-needed"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                keywords: {
+                                    type: "boolean"
+                                },
+                                unnecessary: {
+                                    type: "boolean"
+                                },
+                                numbers: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        },
+
+        fixable: "code",
+        messages: {
+            requireQuotesDueToReservedWord: "Properties should be quoted as '{{property}}' is a reserved word.",
+            inconsistentlyQuotedProperty: "Inconsistently quoted property '{{key}}' found.",
+            unnecessarilyQuotedProperty: "Unnecessarily quoted property '{{property}}' found.",
+            unquotedReservedProperty: "Unquoted reserved word '{{property}}' used as key.",
+            unquotedNumericProperty: "Unquoted number literal '{{property}}' used as key.",
+            unquotedPropertyFound: "Unquoted property '{{property}}' found.",
+            redundantQuoting: "Properties shouldn't be quoted as all quotes are redundant."
+        }
+    },
+
+    create(context) {
+
+        const MODE = context.options[0],
+            KEYWORDS = context.options[1] && context.options[1].keywords,
+            CHECK_UNNECESSARY = !context.options[1] || context.options[1].unnecessary !== false,
+            NUMBERS = context.options[1] && context.options[1].numbers,
+
+            sourceCode = context.sourceCode;
+
+
+        /**
+         * Checks whether a certain string constitutes an ES3 token
+         * @param {string} tokenStr The string to be checked.
+         * @returns {boolean} `true` if it is an ES3 token.
+         */
+        function isKeyword(tokenStr) {
+            return keywords.includes(tokenStr);
+        }
+
+        /**
+         * Checks if an espree-tokenized key has redundant quotes (i.e. whether quotes are unnecessary)
+         * @param {string} rawKey The raw key value from the source
+         * @param {espreeTokens} tokens The espree-tokenized node key
+         * @param {boolean} [skipNumberLiterals=false] Indicates whether number literals should be checked
+         * @returns {boolean} Whether or not a key has redundant quotes.
+         * @private
+         */
+        function areQuotesRedundant(rawKey, tokens, skipNumberLiterals) {
+            return tokens.length === 1 && tokens[0].start === 0 && tokens[0].end === rawKey.length &&
+                (["Identifier", "Keyword", "Null", "Boolean"].includes(tokens[0].type) ||
+                (tokens[0].type === "Numeric" && !skipNumberLiterals && String(+tokens[0].value) === tokens[0].value));
+        }
+
+        /**
+         * Returns a string representation of a property node with quotes removed
+         * @param {ASTNode} key Key AST Node, which may or may not be quoted
+         * @returns {string} A replacement string for this property
+         */
+        function getUnquotedKey(key) {
+            return key.type === "Identifier" ? key.name : key.value;
+        }
+
+        /**
+         * Returns a string representation of a property node with quotes added
+         * @param {ASTNode} key Key AST Node, which may or may not be quoted
+         * @returns {string} A replacement string for this property
+         */
+        function getQuotedKey(key) {
+            if (key.type === "Literal" && typeof key.value === "string") {
+
+                // If the key is already a string literal, don't replace the quotes with double quotes.
+                return sourceCode.getText(key);
+            }
+
+            // Otherwise, the key is either an identifier or a number literal.
+            return `"${key.type === "Identifier" ? key.name : key.value}"`;
+        }
+
+        /**
+         * Ensures that a property's key is quoted only when necessary
+         * @param {ASTNode} node Property AST node
+         * @returns {void}
+         */
+        function checkUnnecessaryQuotes(node) {
+            const key = node.key;
+
+            if (node.method || node.computed || node.shorthand) {
+                return;
+            }
+
+            if (key.type === "Literal" && typeof key.value === "string") {
+                let tokens;
+
+                try {
+                    tokens = espree.tokenize(key.value);
+                } catch {
+                    return;
+                }
+
+                if (tokens.length !== 1) {
+                    return;
+                }
+
+                const isKeywordToken = isKeyword(tokens[0].value);
+
+                if (isKeywordToken && KEYWORDS) {
+                    return;
+                }
+
+                if (CHECK_UNNECESSARY && areQuotesRedundant(key.value, tokens, NUMBERS)) {
+                    context.report({
+                        node,
+                        messageId: "unnecessarilyQuotedProperty",
+                        data: { property: key.value },
+                        fix: fixer => fixer.replaceText(key, getUnquotedKey(key))
+                    });
+                }
+            } else if (KEYWORDS && key.type === "Identifier" && isKeyword(key.name)) {
+                context.report({
+                    node,
+                    messageId: "unquotedReservedProperty",
+                    data: { property: key.name },
+                    fix: fixer => fixer.replaceText(key, getQuotedKey(key))
+                });
+            } else if (NUMBERS && key.type === "Literal" && astUtils.isNumericLiteral(key)) {
+                context.report({
+                    node,
+                    messageId: "unquotedNumericProperty",
+                    data: { property: key.value },
+                    fix: fixer => fixer.replaceText(key, getQuotedKey(key))
+                });
+            }
+        }
+
+        /**
+         * Ensures that a property's key is quoted
+         * @param {ASTNode} node Property AST node
+         * @returns {void}
+         */
+        function checkOmittedQuotes(node) {
+            const key = node.key;
+
+            if (!node.method && !node.computed && !node.shorthand && !(key.type === "Literal" && typeof key.value === "string")) {
+                context.report({
+                    node,
+                    messageId: "unquotedPropertyFound",
+                    data: { property: key.name || key.value },
+                    fix: fixer => fixer.replaceText(key, getQuotedKey(key))
+                });
+            }
+        }
+
+        /**
+         * Ensures that an object's keys are consistently quoted, optionally checks for redundancy of quotes
+         * @param {ASTNode} node Property AST node
+         * @param {boolean} checkQuotesRedundancy Whether to check quotes' redundancy
+         * @returns {void}
+         */
+        function checkConsistency(node, checkQuotesRedundancy) {
+            const quotedProps = [],
+                unquotedProps = [];
+            let keywordKeyName = null,
+                necessaryQuotes = false;
+
+            node.properties.forEach(property => {
+                const key = property.key;
+
+                if (!key || property.method || property.computed || property.shorthand) {
+                    return;
+                }
+
+                if (key.type === "Literal" && typeof key.value === "string") {
+
+                    quotedProps.push(property);
+
+                    if (checkQuotesRedundancy) {
+                        let tokens;
+
+                        try {
+                            tokens = espree.tokenize(key.value);
+                        } catch {
+                            necessaryQuotes = true;
+                            return;
+                        }
+
+                        necessaryQuotes = necessaryQuotes || !areQuotesRedundant(key.value, tokens) || KEYWORDS && isKeyword(tokens[0].value);
+                    }
+                } else if (KEYWORDS && checkQuotesRedundancy && key.type === "Identifier" && isKeyword(key.name)) {
+                    unquotedProps.push(property);
+                    necessaryQuotes = true;
+                    keywordKeyName = key.name;
+                } else {
+                    unquotedProps.push(property);
+                }
+            });
+
+            if (checkQuotesRedundancy && quotedProps.length && !necessaryQuotes) {
+                quotedProps.forEach(property => {
+                    context.report({
+                        node: property,
+                        messageId: "redundantQuoting",
+                        fix: fixer => fixer.replaceText(property.key, getUnquotedKey(property.key))
+                    });
+                });
+            } else if (unquotedProps.length && keywordKeyName) {
+                unquotedProps.forEach(property => {
+                    context.report({
+                        node: property,
+                        messageId: "requireQuotesDueToReservedWord",
+                        data: { property: keywordKeyName },
+                        fix: fixer => fixer.replaceText(property.key, getQuotedKey(property.key))
+                    });
+                });
+            } else if (quotedProps.length && unquotedProps.length) {
+                unquotedProps.forEach(property => {
+                    context.report({
+                        node: property,
+                        messageId: "inconsistentlyQuotedProperty",
+                        data: { key: property.key.name || property.key.value },
+                        fix: fixer => fixer.replaceText(property.key, getQuotedKey(property.key))
+                    });
+                });
+            }
+        }
+
+        return {
+            Property(node) {
+                if (MODE === "always" || !MODE) {
+                    checkOmittedQuotes(node);
+                }
+                if (MODE === "as-needed") {
+                    checkUnnecessaryQuotes(node);
+                }
+            },
+            ObjectExpression(node) {
+                if (MODE === "consistent") {
+                    checkConsistency(node, false);
+                }
+                if (MODE === "consistent-as-needed") {
+                    checkConsistency(node, true);
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/quotes.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/quotes.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/quotes.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,350 @@
+/**
+ * @fileoverview A rule to choose between single and double quote marks
+ * @author Matt DuVall <http://www.mattduvall.com/>, Brandon Payton
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Constants
+//------------------------------------------------------------------------------
+
+const QUOTE_SETTINGS = {
+    double: {
+        quote: "\"",
+        alternateQuote: "'",
+        description: "doublequote"
+    },
+    single: {
+        quote: "'",
+        alternateQuote: "\"",
+        description: "singlequote"
+    },
+    backtick: {
+        quote: "`",
+        alternateQuote: "\"",
+        description: "backtick"
+    }
+};
+
+// An unescaped newline is a newline preceded by an even number of backslashes.
+const UNESCAPED_LINEBREAK_PATTERN = new RegExp(String.raw`(^|[^\\])(\\\\)*[${Array.from(astUtils.LINEBREAKS).join("")}]`, "u");
+
+/**
+ * Switches quoting of javascript string between ' " and `
+ * escaping and unescaping as necessary.
+ * Only escaping of the minimal set of characters is changed.
+ * Note: escaping of newlines when switching from backtick to other quotes is not handled.
+ * @param {string} str A string to convert.
+ * @returns {string} The string with changed quotes.
+ * @private
+ */
+QUOTE_SETTINGS.double.convert =
+QUOTE_SETTINGS.single.convert =
+QUOTE_SETTINGS.backtick.convert = function(str) {
+    const newQuote = this.quote;
+    const oldQuote = str[0];
+
+    if (newQuote === oldQuote) {
+        return str;
+    }
+    return newQuote + str.slice(1, -1).replace(/\\(\$\{|\r\n?|\n|.)|["'`]|\$\{|(\r\n?|\n)/gu, (match, escaped, newline) => {
+        if (escaped === oldQuote || oldQuote === "`" && escaped === "${") {
+            return escaped; // unescape
+        }
+        if (match === newQuote || newQuote === "`" && match === "${") {
+            return `\\${match}`; // escape
+        }
+        if (newline && oldQuote === "`") {
+            return "\\n"; // escape newlines
+        }
+        return match;
+    }) + newQuote;
+};
+
+const AVOID_ESCAPE = "avoid-escape";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce the consistent use of either backticks, double, or single quotes",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/quotes"
+        },
+
+        fixable: "code",
+
+        schema: [
+            {
+                enum: ["single", "double", "backtick"]
+            },
+            {
+                anyOf: [
+                    {
+                        enum: ["avoid-escape"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            avoidEscape: {
+                                type: "boolean"
+                            },
+                            allowTemplateLiterals: {
+                                type: "boolean"
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            wrongQuotes: "Strings must use {{description}}."
+        }
+    },
+
+    create(context) {
+
+        const quoteOption = context.options[0],
+            settings = QUOTE_SETTINGS[quoteOption || "double"],
+            options = context.options[1],
+            allowTemplateLiterals = options && options.allowTemplateLiterals === true,
+            sourceCode = context.sourceCode;
+        let avoidEscape = options && options.avoidEscape === true;
+
+        // deprecated
+        if (options === AVOID_ESCAPE) {
+            avoidEscape = true;
+        }
+
+        /**
+         * Determines if a given node is part of JSX syntax.
+         *
+         * This function returns `true` in the following cases:
+         *
+         * - `<div className="foo"></div>` ... If the literal is an attribute value, the parent of the literal is `JSXAttribute`.
+         * - `<div>foo</div>` ... If the literal is a text content, the parent of the literal is `JSXElement`.
+         * - `<>foo</>` ... If the literal is a text content, the parent of the literal is `JSXFragment`.
+         *
+         * In particular, this function returns `false` in the following cases:
+         *
+         * - `<div className={"foo"}></div>`
+         * - `<div>{"foo"}</div>`
+         *
+         * In both cases, inside of the braces is handled as normal JavaScript.
+         * The braces are `JSXExpressionContainer` nodes.
+         * @param {ASTNode} node The Literal node to check.
+         * @returns {boolean} True if the node is a part of JSX, false if not.
+         * @private
+         */
+        function isJSXLiteral(node) {
+            return node.parent.type === "JSXAttribute" || node.parent.type === "JSXElement" || node.parent.type === "JSXFragment";
+        }
+
+        /**
+         * Checks whether or not a given node is a directive.
+         * The directive is a `ExpressionStatement` which has only a string literal not surrounded by
+         * parentheses.
+         * @param {ASTNode} node A node to check.
+         * @returns {boolean} Whether or not the node is a directive.
+         * @private
+         */
+        function isDirective(node) {
+            return (
+                node.type === "ExpressionStatement" &&
+                node.expression.type === "Literal" &&
+                typeof node.expression.value === "string" &&
+                !astUtils.isParenthesised(sourceCode, node.expression)
+            );
+        }
+
+        /**
+         * Checks whether a specified node is either part of, or immediately follows a (possibly empty) directive prologue.
+         * @see {@link http://www.ecma-international.org/ecma-262/6.0/#sec-directive-prologues-and-the-use-strict-directive}
+         * @param {ASTNode} node A node to check.
+         * @returns {boolean} Whether a specified node is either part of, or immediately follows a (possibly empty) directive prologue.
+         * @private
+         */
+        function isExpressionInOrJustAfterDirectivePrologue(node) {
+            if (!astUtils.isTopLevelExpressionStatement(node.parent)) {
+                return false;
+            }
+            const block = node.parent.parent;
+
+            // Check the node is at a prologue.
+            for (let i = 0; i < block.body.length; ++i) {
+                const statement = block.body[i];
+
+                if (statement === node.parent) {
+                    return true;
+                }
+                if (!isDirective(statement)) {
+                    break;
+                }
+            }
+
+            return false;
+        }
+
+        /**
+         * Checks whether or not a given node is allowed as non backtick.
+         * @param {ASTNode} node A node to check.
+         * @returns {boolean} Whether or not the node is allowed as non backtick.
+         * @private
+         */
+        function isAllowedAsNonBacktick(node) {
+            const parent = node.parent;
+
+            switch (parent.type) {
+
+                // Directive Prologues.
+                case "ExpressionStatement":
+                    return !astUtils.isParenthesised(sourceCode, node) && isExpressionInOrJustAfterDirectivePrologue(node);
+
+                // LiteralPropertyName.
+                case "Property":
+                case "PropertyDefinition":
+                case "MethodDefinition":
+                    return parent.key === node && !parent.computed;
+
+                // ModuleSpecifier.
+                case "ImportDeclaration":
+                case "ExportNamedDeclaration":
+                    return parent.source === node;
+
+                // ModuleExportName or ModuleSpecifier.
+                case "ExportAllDeclaration":
+                    return parent.exported === node || parent.source === node;
+
+                // ModuleExportName.
+                case "ImportSpecifier":
+                    return parent.imported === node;
+
+                // ModuleExportName.
+                case "ExportSpecifier":
+                    return parent.local === node || parent.exported === node;
+
+                // Others don't allow.
+                default:
+                    return false;
+            }
+        }
+
+        /**
+         * Checks whether or not a given TemplateLiteral node is actually using any of the special features provided by template literal strings.
+         * @param {ASTNode} node A TemplateLiteral node to check.
+         * @returns {boolean} Whether or not the TemplateLiteral node is using any of the special features provided by template literal strings.
+         * @private
+         */
+        function isUsingFeatureOfTemplateLiteral(node) {
+            const hasTag = node.parent.type === "TaggedTemplateExpression" && node === node.parent.quasi;
+
+            if (hasTag) {
+                return true;
+            }
+
+            const hasStringInterpolation = node.expressions.length > 0;
+
+            if (hasStringInterpolation) {
+                return true;
+            }
+
+            const isMultilineString = node.quasis.length >= 1 && UNESCAPED_LINEBREAK_PATTERN.test(node.quasis[0].value.raw);
+
+            if (isMultilineString) {
+                return true;
+            }
+
+            return false;
+        }
+
+        return {
+
+            Literal(node) {
+                const val = node.value,
+                    rawVal = node.raw;
+
+                if (settings && typeof val === "string") {
+                    let isValid = (quoteOption === "backtick" && isAllowedAsNonBacktick(node)) ||
+                        isJSXLiteral(node) ||
+                        astUtils.isSurroundedBy(rawVal, settings.quote);
+
+                    if (!isValid && avoidEscape) {
+                        isValid = astUtils.isSurroundedBy(rawVal, settings.alternateQuote) && rawVal.includes(settings.quote);
+                    }
+
+                    if (!isValid) {
+                        context.report({
+                            node,
+                            messageId: "wrongQuotes",
+                            data: {
+                                description: settings.description
+                            },
+                            fix(fixer) {
+                                if (quoteOption === "backtick" && astUtils.hasOctalOrNonOctalDecimalEscapeSequence(rawVal)) {
+
+                                    /*
+                                     * An octal or non-octal decimal escape sequence in a template literal would
+                                     * produce syntax error, even in non-strict mode.
+                                     */
+                                    return null;
+                                }
+
+                                return fixer.replaceText(node, settings.convert(node.raw));
+                            }
+                        });
+                    }
+                }
+            },
+
+            TemplateLiteral(node) {
+
+                // Don't throw an error if backticks are expected or a template literal feature is in use.
+                if (
+                    allowTemplateLiterals ||
+                    quoteOption === "backtick" ||
+                    isUsingFeatureOfTemplateLiteral(node)
+                ) {
+                    return;
+                }
+
+                context.report({
+                    node,
+                    messageId: "wrongQuotes",
+                    data: {
+                        description: settings.description
+                    },
+                    fix(fixer) {
+                        if (astUtils.isTopLevelExpressionStatement(node.parent) && !astUtils.isParenthesised(sourceCode, node)) {
+
+                            /*
+                             * TemplateLiterals aren't actually directives, but fixing them might turn
+                             * them into directives and change the behavior of the code.
+                             */
+                            return null;
+                        }
+                        return fixer.replaceText(node, settings.convert(sourceCode.getText(node)));
+                    }
+                });
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/radix.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/radix.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/radix.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,198 @@
+/**
+ * @fileoverview Rule to flag use of parseInt without a radix argument
+ * @author James Allardice
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const MODE_ALWAYS = "always",
+    MODE_AS_NEEDED = "as-needed";
+
+const validRadixValues = new Set(Array.from({ length: 37 - 2 }, (_, index) => index + 2));
+
+/**
+ * Checks whether a given variable is shadowed or not.
+ * @param {eslint-scope.Variable} variable A variable to check.
+ * @returns {boolean} `true` if the variable is shadowed.
+ */
+function isShadowed(variable) {
+    return variable.defs.length >= 1;
+}
+
+/**
+ * Checks whether a given node is a MemberExpression of `parseInt` method or not.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} `true` if the node is a MemberExpression of `parseInt`
+ *      method.
+ */
+function isParseIntMethod(node) {
+    return (
+        node.type === "MemberExpression" &&
+        !node.computed &&
+        node.property.type === "Identifier" &&
+        node.property.name === "parseInt"
+    );
+}
+
+/**
+ * Checks whether a given node is a valid value of radix or not.
+ *
+ * The following values are invalid.
+ *
+ * - A literal except integers between 2 and 36.
+ * - undefined.
+ * @param {ASTNode} radix A node of radix to check.
+ * @returns {boolean} `true` if the node is valid.
+ */
+function isValidRadix(radix) {
+    return !(
+        (radix.type === "Literal" && !validRadixValues.has(radix.value)) ||
+        (radix.type === "Identifier" && radix.name === "undefined")
+    );
+}
+
+/**
+ * Checks whether a given node is a default value of radix or not.
+ * @param {ASTNode} radix A node of radix to check.
+ * @returns {boolean} `true` if the node is the literal node of `10`.
+ */
+function isDefaultRadix(radix) {
+    return radix.type === "Literal" && radix.value === 10;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce the consistent use of the radix argument when using `parseInt()`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/radix"
+        },
+
+        hasSuggestions: true,
+
+        schema: [
+            {
+                enum: ["always", "as-needed"]
+            }
+        ],
+
+        messages: {
+            missingParameters: "Missing parameters.",
+            redundantRadix: "Redundant radix parameter.",
+            missingRadix: "Missing radix parameter.",
+            invalidRadix: "Invalid radix parameter, must be an integer between 2 and 36.",
+            addRadixParameter10: "Add radix parameter `10` for parsing decimal numbers."
+        }
+    },
+
+    create(context) {
+        const mode = context.options[0] || MODE_ALWAYS;
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Checks the arguments of a given CallExpression node and reports it if it
+         * offends this rule.
+         * @param {ASTNode} node A CallExpression node to check.
+         * @returns {void}
+         */
+        function checkArguments(node) {
+            const args = node.arguments;
+
+            switch (args.length) {
+                case 0:
+                    context.report({
+                        node,
+                        messageId: "missingParameters"
+                    });
+                    break;
+
+                case 1:
+                    if (mode === MODE_ALWAYS) {
+                        context.report({
+                            node,
+                            messageId: "missingRadix",
+                            suggest: [
+                                {
+                                    messageId: "addRadixParameter10",
+                                    fix(fixer) {
+                                        const tokens = sourceCode.getTokens(node);
+                                        const lastToken = tokens[tokens.length - 1]; // Parenthesis.
+                                        const secondToLastToken = tokens[tokens.length - 2]; // May or may not be a comma.
+                                        const hasTrailingComma = secondToLastToken.type === "Punctuator" && secondToLastToken.value === ",";
+
+                                        return fixer.insertTextBefore(lastToken, hasTrailingComma ? " 10," : ", 10");
+                                    }
+                                }
+                            ]
+                        });
+                    }
+                    break;
+
+                default:
+                    if (mode === MODE_AS_NEEDED && isDefaultRadix(args[1])) {
+                        context.report({
+                            node,
+                            messageId: "redundantRadix"
+                        });
+                    } else if (!isValidRadix(args[1])) {
+                        context.report({
+                            node,
+                            messageId: "invalidRadix"
+                        });
+                    }
+                    break;
+            }
+        }
+
+        return {
+            "Program:exit"(node) {
+                const scope = sourceCode.getScope(node);
+                let variable;
+
+                // Check `parseInt()`
+                variable = astUtils.getVariableByName(scope, "parseInt");
+                if (variable && !isShadowed(variable)) {
+                    variable.references.forEach(reference => {
+                        const idNode = reference.identifier;
+
+                        if (astUtils.isCallee(idNode)) {
+                            checkArguments(idNode.parent);
+                        }
+                    });
+                }
+
+                // Check `Number.parseInt()`
+                variable = astUtils.getVariableByName(scope, "Number");
+                if (variable && !isShadowed(variable)) {
+                    variable.references.forEach(reference => {
+                        const parentNode = reference.identifier.parent;
+                        const maybeCallee = parentNode.parent.type === "ChainExpression"
+                            ? parentNode.parent
+                            : parentNode;
+
+                        if (isParseIntMethod(parentNode) && astUtils.isCallee(maybeCallee)) {
+                            checkArguments(maybeCallee.parent);
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/require-atomic-updates.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/require-atomic-updates.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/require-atomic-updates.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,331 @@
+/**
+ * @fileoverview disallow assignments that can lead to race conditions due to usage of `await` or `yield`
+ * @author Teddy Katz
+ * @author Toru Nagashima
+ */
+"use strict";
+
+/**
+ * Make the map from identifiers to each reference.
+ * @param {escope.Scope} scope The scope to get references.
+ * @param {Map<Identifier, escope.Reference>} [outReferenceMap] The map from identifier nodes to each reference object.
+ * @returns {Map<Identifier, escope.Reference>} `referenceMap`.
+ */
+function createReferenceMap(scope, outReferenceMap = new Map()) {
+    for (const reference of scope.references) {
+        if (reference.resolved === null) {
+            continue;
+        }
+
+        outReferenceMap.set(reference.identifier, reference);
+    }
+    for (const childScope of scope.childScopes) {
+        if (childScope.type !== "function") {
+            createReferenceMap(childScope, outReferenceMap);
+        }
+    }
+
+    return outReferenceMap;
+}
+
+/**
+ * Get `reference.writeExpr` of a given reference.
+ * If it's the read reference of MemberExpression in LHS, returns RHS in order to address `a.b = await a`
+ * @param {escope.Reference} reference The reference to get.
+ * @returns {Expression|null} The `reference.writeExpr`.
+ */
+function getWriteExpr(reference) {
+    if (reference.writeExpr) {
+        return reference.writeExpr;
+    }
+    let node = reference.identifier;
+
+    while (node) {
+        const t = node.parent.type;
+
+        if (t === "AssignmentExpression" && node.parent.left === node) {
+            return node.parent.right;
+        }
+        if (t === "MemberExpression" && node.parent.object === node) {
+            node = node.parent;
+            continue;
+        }
+
+        break;
+    }
+
+    return null;
+}
+
+/**
+ * Checks if an expression is a variable that can only be observed within the given function.
+ * @param {Variable|null} variable The variable to check
+ * @param {boolean} isMemberAccess If `true` then this is a member access.
+ * @returns {boolean} `true` if the variable is local to the given function, and is never referenced in a closure.
+ */
+function isLocalVariableWithoutEscape(variable, isMemberAccess) {
+    if (!variable) {
+        return false; // A global variable which was not defined.
+    }
+
+    // If the reference is a property access and the variable is a parameter, it handles the variable is not local.
+    if (isMemberAccess && variable.defs.some(d => d.type === "Parameter")) {
+        return false;
+    }
+
+    const functionScope = variable.scope.variableScope;
+
+    return variable.references.every(reference =>
+        reference.from.variableScope === functionScope);
+}
+
+/**
+ * Represents segment information.
+ */
+class SegmentInfo {
+    constructor() {
+        this.info = new WeakMap();
+    }
+
+    /**
+     * Initialize the segment information.
+     * @param {PathSegment} segment The segment to initialize.
+     * @returns {void}
+     */
+    initialize(segment) {
+        const outdatedReadVariables = new Set();
+        const freshReadVariables = new Set();
+
+        for (const prevSegment of segment.prevSegments) {
+            const info = this.info.get(prevSegment);
+
+            if (info) {
+                info.outdatedReadVariables.forEach(Set.prototype.add, outdatedReadVariables);
+                info.freshReadVariables.forEach(Set.prototype.add, freshReadVariables);
+            }
+        }
+
+        this.info.set(segment, { outdatedReadVariables, freshReadVariables });
+    }
+
+    /**
+     * Mark a given variable as read on given segments.
+     * @param {PathSegment[]} segments The segments that it read the variable on.
+     * @param {Variable} variable The variable to be read.
+     * @returns {void}
+     */
+    markAsRead(segments, variable) {
+        for (const segment of segments) {
+            const info = this.info.get(segment);
+
+            if (info) {
+                info.freshReadVariables.add(variable);
+
+                // If a variable is freshly read again, then it's no more out-dated.
+                info.outdatedReadVariables.delete(variable);
+            }
+        }
+    }
+
+    /**
+     * Move `freshReadVariables` to `outdatedReadVariables`.
+     * @param {PathSegment[]} segments The segments to process.
+     * @returns {void}
+     */
+    makeOutdated(segments) {
+        for (const segment of segments) {
+            const info = this.info.get(segment);
+
+            if (info) {
+                info.freshReadVariables.forEach(Set.prototype.add, info.outdatedReadVariables);
+                info.freshReadVariables.clear();
+            }
+        }
+    }
+
+    /**
+     * Check if a given variable is outdated on the current segments.
+     * @param {PathSegment[]} segments The current segments.
+     * @param {Variable} variable The variable to check.
+     * @returns {boolean} `true` if the variable is outdated on the segments.
+     */
+    isOutdated(segments, variable) {
+        for (const segment of segments) {
+            const info = this.info.get(segment);
+
+            if (info && info.outdatedReadVariables.has(variable)) {
+                return true;
+            }
+        }
+        return false;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Disallow assignments that can lead to race conditions due to usage of `await` or `yield`",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/require-atomic-updates"
+        },
+
+        fixable: null,
+
+        schema: [{
+            type: "object",
+            properties: {
+                allowProperties: {
+                    type: "boolean",
+                    default: false
+                }
+            },
+            additionalProperties: false
+        }],
+
+        messages: {
+            nonAtomicUpdate: "Possible race condition: `{{value}}` might be reassigned based on an outdated value of `{{value}}`.",
+            nonAtomicObjectUpdate: "Possible race condition: `{{value}}` might be assigned based on an outdated state of `{{object}}`."
+        }
+    },
+
+    create(context) {
+        const allowProperties = !!context.options[0] && context.options[0].allowProperties;
+
+        const sourceCode = context.sourceCode;
+        const assignmentReferences = new Map();
+        const segmentInfo = new SegmentInfo();
+        let stack = null;
+
+        return {
+            onCodePathStart(codePath, node) {
+                const scope = sourceCode.getScope(node);
+                const shouldVerify =
+                    scope.type === "function" &&
+                    (scope.block.async || scope.block.generator);
+
+                stack = {
+                    upper: stack,
+                    codePath,
+                    referenceMap: shouldVerify ? createReferenceMap(scope) : null,
+                    currentSegments: new Set()
+                };
+            },
+            onCodePathEnd() {
+                stack = stack.upper;
+            },
+
+            // Initialize the segment information.
+            onCodePathSegmentStart(segment) {
+                segmentInfo.initialize(segment);
+                stack.currentSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentStart(segment) {
+                stack.currentSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                stack.currentSegments.delete(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                stack.currentSegments.delete(segment);
+            },
+
+
+            // Handle references to prepare verification.
+            Identifier(node) {
+                const { referenceMap } = stack;
+                const reference = referenceMap && referenceMap.get(node);
+
+                // Ignore if this is not a valid variable reference.
+                if (!reference) {
+                    return;
+                }
+                const variable = reference.resolved;
+                const writeExpr = getWriteExpr(reference);
+                const isMemberAccess = reference.identifier.parent.type === "MemberExpression";
+
+                // Add a fresh read variable.
+                if (reference.isRead() && !(writeExpr && writeExpr.parent.operator === "=")) {
+                    segmentInfo.markAsRead(stack.currentSegments, variable);
+                }
+
+                /*
+                 * Register the variable to verify after ESLint traversed the `writeExpr` node
+                 * if this reference is an assignment to a variable which is referred from other closure.
+                 */
+                if (writeExpr &&
+                    writeExpr.parent.right === writeExpr && // ← exclude variable declarations.
+                    !isLocalVariableWithoutEscape(variable, isMemberAccess)
+                ) {
+                    let refs = assignmentReferences.get(writeExpr);
+
+                    if (!refs) {
+                        refs = [];
+                        assignmentReferences.set(writeExpr, refs);
+                    }
+
+                    refs.push(reference);
+                }
+            },
+
+            /*
+             * Verify assignments.
+             * If the reference exists in `outdatedReadVariables` list, report it.
+             */
+            ":expression:exit"(node) {
+
+                // referenceMap exists if this is in a resumable function scope.
+                if (!stack.referenceMap) {
+                    return;
+                }
+
+                // Mark the read variables on this code path as outdated.
+                if (node.type === "AwaitExpression" || node.type === "YieldExpression") {
+                    segmentInfo.makeOutdated(stack.currentSegments);
+                }
+
+                // Verify.
+                const references = assignmentReferences.get(node);
+
+                if (references) {
+                    assignmentReferences.delete(node);
+
+                    for (const reference of references) {
+                        const variable = reference.resolved;
+
+                        if (segmentInfo.isOutdated(stack.currentSegments, variable)) {
+                            if (node.parent.left === reference.identifier) {
+                                context.report({
+                                    node: node.parent,
+                                    messageId: "nonAtomicUpdate",
+                                    data: {
+                                        value: variable.name
+                                    }
+                                });
+                            } else if (!allowProperties) {
+                                context.report({
+                                    node: node.parent,
+                                    messageId: "nonAtomicObjectUpdate",
+                                    data: {
+                                        value: sourceCode.getText(node.parent.left),
+                                        object: variable.name
+                                    }
+                                });
+                            }
+
+                        }
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/require-await.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/require-await.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/require-await.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,113 @@
+/**
+ * @fileoverview Rule to disallow async functions which have no `await` expression.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Capitalize the 1st letter of the given text.
+ * @param {string} text The text to capitalize.
+ * @returns {string} The text that the 1st letter was capitalized.
+ */
+function capitalizeFirstLetter(text) {
+    return text[0].toUpperCase() + text.slice(1);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Disallow async functions which have no `await` expression",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/require-await"
+        },
+
+        schema: [],
+
+        messages: {
+            missingAwait: "{{name}} has no 'await' expression."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        let scopeInfo = null;
+
+        /**
+         * Push the scope info object to the stack.
+         * @returns {void}
+         */
+        function enterFunction() {
+            scopeInfo = {
+                upper: scopeInfo,
+                hasAwait: false
+            };
+        }
+
+        /**
+         * Pop the top scope info object from the stack.
+         * Also, it reports the function if needed.
+         * @param {ASTNode} node The node to report.
+         * @returns {void}
+         */
+        function exitFunction(node) {
+            if (!node.generator && node.async && !scopeInfo.hasAwait && !astUtils.isEmptyFunction(node)) {
+                context.report({
+                    node,
+                    loc: astUtils.getFunctionHeadLoc(node, sourceCode),
+                    messageId: "missingAwait",
+                    data: {
+                        name: capitalizeFirstLetter(
+                            astUtils.getFunctionNameWithKind(node)
+                        )
+                    }
+                });
+            }
+
+            scopeInfo = scopeInfo.upper;
+        }
+
+        return {
+            FunctionDeclaration: enterFunction,
+            FunctionExpression: enterFunction,
+            ArrowFunctionExpression: enterFunction,
+            "FunctionDeclaration:exit": exitFunction,
+            "FunctionExpression:exit": exitFunction,
+            "ArrowFunctionExpression:exit": exitFunction,
+
+            AwaitExpression() {
+                if (!scopeInfo) {
+                    return;
+                }
+
+                scopeInfo.hasAwait = true;
+            },
+            ForOfStatement(node) {
+                if (!scopeInfo) {
+                    return;
+                }
+
+                if (node.await) {
+                    scopeInfo.hasAwait = true;
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/require-jsdoc.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/require-jsdoc.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/require-jsdoc.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,122 @@
+/**
+ * @fileoverview Rule to check for jsdoc presence.
+ * @author Gyandeep Singh
+ * @deprecated in ESLint v5.10.0
+ */
+"use strict";
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require JSDoc comments",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/require-jsdoc"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    require: {
+                        type: "object",
+                        properties: {
+                            ClassDeclaration: {
+                                type: "boolean",
+                                default: false
+                            },
+                            MethodDefinition: {
+                                type: "boolean",
+                                default: false
+                            },
+                            FunctionDeclaration: {
+                                type: "boolean",
+                                default: true
+                            },
+                            ArrowFunctionExpression: {
+                                type: "boolean",
+                                default: false
+                            },
+                            FunctionExpression: {
+                                type: "boolean",
+                                default: false
+                            }
+                        },
+                        additionalProperties: false,
+                        default: {}
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        deprecated: true,
+        replacedBy: [],
+
+        messages: {
+            missingJSDocComment: "Missing JSDoc comment."
+        }
+    },
+
+    create(context) {
+        const source = context.sourceCode;
+        const DEFAULT_OPTIONS = {
+            FunctionDeclaration: true,
+            MethodDefinition: false,
+            ClassDeclaration: false,
+            ArrowFunctionExpression: false,
+            FunctionExpression: false
+        };
+        const options = Object.assign(DEFAULT_OPTIONS, context.options[0] && context.options[0].require);
+
+        /**
+         * Report the error message
+         * @param {ASTNode} node node to report
+         * @returns {void}
+         */
+        function report(node) {
+            context.report({ node, messageId: "missingJSDocComment" });
+        }
+
+        /**
+         * Check if the jsdoc comment is present or not.
+         * @param {ASTNode} node node to examine
+         * @returns {void}
+         */
+        function checkJsDoc(node) {
+            const jsdocComment = source.getJSDocComment(node);
+
+            if (!jsdocComment) {
+                report(node);
+            }
+        }
+
+        return {
+            FunctionDeclaration(node) {
+                if (options.FunctionDeclaration) {
+                    checkJsDoc(node);
+                }
+            },
+            FunctionExpression(node) {
+                if (
+                    (options.MethodDefinition && node.parent.type === "MethodDefinition") ||
+                    (options.FunctionExpression && (node.parent.type === "VariableDeclarator" || (node.parent.type === "Property" && node === node.parent.value)))
+                ) {
+                    checkJsDoc(node);
+                }
+            },
+            ClassDeclaration(node) {
+                if (options.ClassDeclaration) {
+                    checkJsDoc(node);
+                }
+            },
+            ArrowFunctionExpression(node) {
+                if (options.ArrowFunctionExpression && node.parent.type === "VariableDeclarator") {
+                    checkJsDoc(node);
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/require-unicode-regexp.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/require-unicode-regexp.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/require-unicode-regexp.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,129 @@
+/**
+ * @fileoverview Rule to enforce the use of `u` flag on RegExp.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const {
+    CALL,
+    CONSTRUCT,
+    ReferenceTracker,
+    getStringIfConstant
+} = require("@eslint-community/eslint-utils");
+const astUtils = require("./utils/ast-utils.js");
+const { isValidWithUnicodeFlag } = require("./utils/regular-expressions");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce the use of `u` or `v` flag on RegExp",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/require-unicode-regexp"
+        },
+
+        hasSuggestions: true,
+
+        messages: {
+            addUFlag: "Add the 'u' flag.",
+            requireUFlag: "Use the 'u' flag."
+        },
+
+        schema: []
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        return {
+            "Literal[regex]"(node) {
+                const flags = node.regex.flags || "";
+
+                if (!flags.includes("u") && !flags.includes("v")) {
+                    context.report({
+                        messageId: "requireUFlag",
+                        node,
+                        suggest: isValidWithUnicodeFlag(context.languageOptions.ecmaVersion, node.regex.pattern)
+                            ? [
+                                {
+                                    fix(fixer) {
+                                        return fixer.insertTextAfter(node, "u");
+                                    },
+                                    messageId: "addUFlag"
+                                }
+                            ]
+                            : null
+                    });
+                }
+            },
+
+            Program(node) {
+                const scope = sourceCode.getScope(node);
+                const tracker = new ReferenceTracker(scope);
+                const trackMap = {
+                    RegExp: { [CALL]: true, [CONSTRUCT]: true }
+                };
+
+                for (const { node: refNode } of tracker.iterateGlobalReferences(trackMap)) {
+                    const [patternNode, flagsNode] = refNode.arguments;
+
+                    if (patternNode && patternNode.type === "SpreadElement") {
+                        continue;
+                    }
+                    const pattern = getStringIfConstant(patternNode, scope);
+                    const flags = getStringIfConstant(flagsNode, scope);
+
+                    if (!flagsNode || (typeof flags === "string" && !flags.includes("u") && !flags.includes("v"))) {
+                        context.report({
+                            messageId: "requireUFlag",
+                            node: refNode,
+                            suggest: typeof pattern === "string" && isValidWithUnicodeFlag(context.languageOptions.ecmaVersion, pattern)
+                                ? [
+                                    {
+                                        fix(fixer) {
+                                            if (flagsNode) {
+                                                if ((flagsNode.type === "Literal" && typeof flagsNode.value === "string") || flagsNode.type === "TemplateLiteral") {
+                                                    const flagsNodeText = sourceCode.getText(flagsNode);
+
+                                                    return fixer.replaceText(flagsNode, [
+                                                        flagsNodeText.slice(0, flagsNodeText.length - 1),
+                                                        flagsNodeText.slice(flagsNodeText.length - 1)
+                                                    ].join("u"));
+                                                }
+
+                                                // We intentionally don't suggest concatenating + "u" to non-literals
+                                                return null;
+                                            }
+
+                                            const penultimateToken = sourceCode.getLastToken(refNode, { skip: 1 }); // skip closing parenthesis
+
+                                            return fixer.insertTextAfter(
+                                                penultimateToken,
+                                                astUtils.isCommaToken(penultimateToken)
+                                                    ? ' "u",'
+                                                    : ', "u"'
+                                            );
+                                        },
+                                        messageId: "addUFlag"
+                                    }
+                                ]
+                                : null
+                        });
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/require-yield.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/require-yield.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/require-yield.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,77 @@
+/**
+ * @fileoverview Rule to flag the generator functions that does not have yield.
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require generator functions to contain `yield`",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/require-yield"
+        },
+
+        schema: [],
+
+        messages: {
+            missingYield: "This generator function does not have 'yield'."
+        }
+    },
+
+    create(context) {
+        const stack = [];
+
+        /**
+         * If the node is a generator function, start counting `yield` keywords.
+         * @param {Node} node A function node to check.
+         * @returns {void}
+         */
+        function beginChecking(node) {
+            if (node.generator) {
+                stack.push(0);
+            }
+        }
+
+        /**
+         * If the node is a generator function, end counting `yield` keywords, then
+         * reports result.
+         * @param {Node} node A function node to check.
+         * @returns {void}
+         */
+        function endChecking(node) {
+            if (!node.generator) {
+                return;
+            }
+
+            const countYield = stack.pop();
+
+            if (countYield === 0 && node.body.body.length > 0) {
+                context.report({ node, messageId: "missingYield" });
+            }
+        }
+
+        return {
+            FunctionDeclaration: beginChecking,
+            "FunctionDeclaration:exit": endChecking,
+            FunctionExpression: beginChecking,
+            "FunctionExpression:exit": endChecking,
+
+            // Increases the count of `yield` keyword.
+            YieldExpression() {
+
+                if (stack.length > 0) {
+                    stack[stack.length - 1] += 1;
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/rest-spread-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/rest-spread-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/rest-spread-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,123 @@
+/**
+ * @fileoverview Enforce spacing between rest and spread operators and their expressions.
+ * @author Kai Cataldo
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce spacing between rest and spread operators and their expressions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/rest-spread-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            }
+        ],
+
+        messages: {
+            unexpectedWhitespace: "Unexpected whitespace after {{type}} operator.",
+            expectedWhitespace: "Expected whitespace after {{type}} operator."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode,
+            alwaysSpace = context.options[0] === "always";
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Checks whitespace between rest/spread operators and their expressions
+         * @param {ASTNode} node The node to check
+         * @returns {void}
+         */
+        function checkWhiteSpace(node) {
+            const operator = sourceCode.getFirstToken(node),
+                nextToken = sourceCode.getTokenAfter(operator),
+                hasWhitespace = sourceCode.isSpaceBetweenTokens(operator, nextToken);
+            let type;
+
+            switch (node.type) {
+                case "SpreadElement":
+                    type = "spread";
+                    if (node.parent.type === "ObjectExpression") {
+                        type += " property";
+                    }
+                    break;
+                case "RestElement":
+                    type = "rest";
+                    if (node.parent.type === "ObjectPattern") {
+                        type += " property";
+                    }
+                    break;
+                case "ExperimentalSpreadProperty":
+                    type = "spread property";
+                    break;
+                case "ExperimentalRestProperty":
+                    type = "rest property";
+                    break;
+                default:
+                    return;
+            }
+
+            if (alwaysSpace && !hasWhitespace) {
+                context.report({
+                    node,
+                    loc: operator.loc,
+                    messageId: "expectedWhitespace",
+                    data: {
+                        type
+                    },
+                    fix(fixer) {
+                        return fixer.replaceTextRange([operator.range[1], nextToken.range[0]], " ");
+                    }
+                });
+            } else if (!alwaysSpace && hasWhitespace) {
+                context.report({
+                    node,
+                    loc: {
+                        start: operator.loc.end,
+                        end: nextToken.loc.start
+                    },
+                    messageId: "unexpectedWhitespace",
+                    data: {
+                        type
+                    },
+                    fix(fixer) {
+                        return fixer.removeRange([operator.range[1], nextToken.range[0]]);
+                    }
+                });
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            SpreadElement: checkWhiteSpace,
+            RestElement: checkWhiteSpace,
+            ExperimentalSpreadProperty: checkWhiteSpace,
+            ExperimentalRestProperty: checkWhiteSpace
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/semi-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/semi-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/semi-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,248 @@
+/**
+ * @fileoverview Validates spacing before and after semicolon
+ * @author Mathias Schreck
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent spacing before and after semicolons",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/semi-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    before: {
+                        type: "boolean",
+                        default: false
+                    },
+                    after: {
+                        type: "boolean",
+                        default: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedWhitespaceBefore: "Unexpected whitespace before semicolon.",
+            unexpectedWhitespaceAfter: "Unexpected whitespace after semicolon.",
+            missingWhitespaceBefore: "Missing whitespace before semicolon.",
+            missingWhitespaceAfter: "Missing whitespace after semicolon."
+        }
+    },
+
+    create(context) {
+
+        const config = context.options[0],
+            sourceCode = context.sourceCode;
+        let requireSpaceBefore = false,
+            requireSpaceAfter = true;
+
+        if (typeof config === "object") {
+            requireSpaceBefore = config.before;
+            requireSpaceAfter = config.after;
+        }
+
+        /**
+         * Checks if a given token has leading whitespace.
+         * @param {Object} token The token to check.
+         * @returns {boolean} True if the given token has leading space, false if not.
+         */
+        function hasLeadingSpace(token) {
+            const tokenBefore = sourceCode.getTokenBefore(token);
+
+            return tokenBefore && astUtils.isTokenOnSameLine(tokenBefore, token) && sourceCode.isSpaceBetweenTokens(tokenBefore, token);
+        }
+
+        /**
+         * Checks if a given token has trailing whitespace.
+         * @param {Object} token The token to check.
+         * @returns {boolean} True if the given token has trailing space, false if not.
+         */
+        function hasTrailingSpace(token) {
+            const tokenAfter = sourceCode.getTokenAfter(token);
+
+            return tokenAfter && astUtils.isTokenOnSameLine(token, tokenAfter) && sourceCode.isSpaceBetweenTokens(token, tokenAfter);
+        }
+
+        /**
+         * Checks if the given token is the last token in its line.
+         * @param {Token} token The token to check.
+         * @returns {boolean} Whether or not the token is the last in its line.
+         */
+        function isLastTokenInCurrentLine(token) {
+            const tokenAfter = sourceCode.getTokenAfter(token);
+
+            return !(tokenAfter && astUtils.isTokenOnSameLine(token, tokenAfter));
+        }
+
+        /**
+         * Checks if the given token is the first token in its line
+         * @param {Token} token The token to check.
+         * @returns {boolean} Whether or not the token is the first in its line.
+         */
+        function isFirstTokenInCurrentLine(token) {
+            const tokenBefore = sourceCode.getTokenBefore(token);
+
+            return !(tokenBefore && astUtils.isTokenOnSameLine(token, tokenBefore));
+        }
+
+        /**
+         * Checks if the next token of a given token is a closing parenthesis.
+         * @param {Token} token The token to check.
+         * @returns {boolean} Whether or not the next token of a given token is a closing parenthesis.
+         */
+        function isBeforeClosingParen(token) {
+            const nextToken = sourceCode.getTokenAfter(token);
+
+            return (nextToken && astUtils.isClosingBraceToken(nextToken) || astUtils.isClosingParenToken(nextToken));
+        }
+
+        /**
+         * Report location example :
+         *
+         * for unexpected space `before`
+         *
+         * var a = 'b'   ;
+         *            ^^^
+         *
+         * for unexpected space `after`
+         *
+         * var a = 'b';  c = 10;
+         *             ^^
+         *
+         * Reports if the given token has invalid spacing.
+         * @param {Token} token The semicolon token to check.
+         * @param {ASTNode} node The corresponding node of the token.
+         * @returns {void}
+         */
+        function checkSemicolonSpacing(token, node) {
+            if (astUtils.isSemicolonToken(token)) {
+                if (hasLeadingSpace(token)) {
+                    if (!requireSpaceBefore) {
+                        const tokenBefore = sourceCode.getTokenBefore(token);
+                        const loc = {
+                            start: tokenBefore.loc.end,
+                            end: token.loc.start
+                        };
+
+                        context.report({
+                            node,
+                            loc,
+                            messageId: "unexpectedWhitespaceBefore",
+                            fix(fixer) {
+
+                                return fixer.removeRange([tokenBefore.range[1], token.range[0]]);
+                            }
+                        });
+                    }
+                } else {
+                    if (requireSpaceBefore) {
+                        const loc = token.loc;
+
+                        context.report({
+                            node,
+                            loc,
+                            messageId: "missingWhitespaceBefore",
+                            fix(fixer) {
+                                return fixer.insertTextBefore(token, " ");
+                            }
+                        });
+                    }
+                }
+
+                if (!isFirstTokenInCurrentLine(token) && !isLastTokenInCurrentLine(token) && !isBeforeClosingParen(token)) {
+                    if (hasTrailingSpace(token)) {
+                        if (!requireSpaceAfter) {
+                            const tokenAfter = sourceCode.getTokenAfter(token);
+                            const loc = {
+                                start: token.loc.end,
+                                end: tokenAfter.loc.start
+                            };
+
+                            context.report({
+                                node,
+                                loc,
+                                messageId: "unexpectedWhitespaceAfter",
+                                fix(fixer) {
+
+                                    return fixer.removeRange([token.range[1], tokenAfter.range[0]]);
+                                }
+                            });
+                        }
+                    } else {
+                        if (requireSpaceAfter) {
+                            const loc = token.loc;
+
+                            context.report({
+                                node,
+                                loc,
+                                messageId: "missingWhitespaceAfter",
+                                fix(fixer) {
+                                    return fixer.insertTextAfter(token, " ");
+                                }
+                            });
+                        }
+                    }
+                }
+            }
+        }
+
+        /**
+         * Checks the spacing of the semicolon with the assumption that the last token is the semicolon.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         */
+        function checkNode(node) {
+            const token = sourceCode.getLastToken(node);
+
+            checkSemicolonSpacing(token, node);
+        }
+
+        return {
+            VariableDeclaration: checkNode,
+            ExpressionStatement: checkNode,
+            BreakStatement: checkNode,
+            ContinueStatement: checkNode,
+            DebuggerStatement: checkNode,
+            DoWhileStatement: checkNode,
+            ReturnStatement: checkNode,
+            ThrowStatement: checkNode,
+            ImportDeclaration: checkNode,
+            ExportNamedDeclaration: checkNode,
+            ExportAllDeclaration: checkNode,
+            ExportDefaultDeclaration: checkNode,
+            ForStatement(node) {
+                if (node.init) {
+                    checkSemicolonSpacing(sourceCode.getTokenAfter(node.init), node);
+                }
+
+                if (node.test) {
+                    checkSemicolonSpacing(sourceCode.getTokenAfter(node.test), node);
+                }
+            },
+            PropertyDefinition: checkNode
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/semi-style.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/semi-style.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/semi-style.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,158 @@
+/**
+ * @fileoverview Rule to enforce location of semicolons.
+ * @author Toru Nagashima
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+const SELECTOR = [
+    "BreakStatement", "ContinueStatement", "DebuggerStatement",
+    "DoWhileStatement", "ExportAllDeclaration",
+    "ExportDefaultDeclaration", "ExportNamedDeclaration",
+    "ExpressionStatement", "ImportDeclaration", "ReturnStatement",
+    "ThrowStatement", "VariableDeclaration", "PropertyDefinition"
+].join(",");
+
+/**
+ * Get the child node list of a given node.
+ * This returns `BlockStatement#body`, `StaticBlock#body`, `Program#body`,
+ * `ClassBody#body`, or `SwitchCase#consequent`.
+ * This is used to check whether a node is the first/last child.
+ * @param {Node} node A node to get child node list.
+ * @returns {Node[]|null} The child node list.
+ */
+function getChildren(node) {
+    const t = node.type;
+
+    if (
+        t === "BlockStatement" ||
+        t === "StaticBlock" ||
+        t === "Program" ||
+        t === "ClassBody"
+    ) {
+        return node.body;
+    }
+    if (t === "SwitchCase") {
+        return node.consequent;
+    }
+    return null;
+}
+
+/**
+ * Check whether a given node is the last statement in the parent block.
+ * @param {Node} node A node to check.
+ * @returns {boolean} `true` if the node is the last statement in the parent block.
+ */
+function isLastChild(node) {
+    const t = node.parent.type;
+
+    if (t === "IfStatement" && node.parent.consequent === node && node.parent.alternate) { // before `else` keyword.
+        return true;
+    }
+    if (t === "DoWhileStatement") { // before `while` keyword.
+        return true;
+    }
+    const nodeList = getChildren(node.parent);
+
+    return nodeList !== null && nodeList[nodeList.length - 1] === node; // before `}` or etc.
+}
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce location of semicolons",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/semi-style"
+        },
+
+        schema: [{ enum: ["last", "first"] }],
+        fixable: "whitespace",
+
+        messages: {
+            expectedSemiColon: "Expected this semicolon to be at {{pos}}."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const option = context.options[0] || "last";
+
+        /**
+         * Check the given semicolon token.
+         * @param {Token} semiToken The semicolon token to check.
+         * @param {"first"|"last"} expected The expected location to check.
+         * @returns {void}
+         */
+        function check(semiToken, expected) {
+            const prevToken = sourceCode.getTokenBefore(semiToken);
+            const nextToken = sourceCode.getTokenAfter(semiToken);
+            const prevIsSameLine = !prevToken || astUtils.isTokenOnSameLine(prevToken, semiToken);
+            const nextIsSameLine = !nextToken || astUtils.isTokenOnSameLine(semiToken, nextToken);
+
+            if ((expected === "last" && !prevIsSameLine) || (expected === "first" && !nextIsSameLine)) {
+                context.report({
+                    loc: semiToken.loc,
+                    messageId: "expectedSemiColon",
+                    data: {
+                        pos: (expected === "last")
+                            ? "the end of the previous line"
+                            : "the beginning of the next line"
+                    },
+                    fix(fixer) {
+                        if (prevToken && nextToken && sourceCode.commentsExistBetween(prevToken, nextToken)) {
+                            return null;
+                        }
+
+                        const start = prevToken ? prevToken.range[1] : semiToken.range[0];
+                        const end = nextToken ? nextToken.range[0] : semiToken.range[1];
+                        const text = (expected === "last") ? ";\n" : "\n;";
+
+                        return fixer.replaceTextRange([start, end], text);
+                    }
+                });
+            }
+        }
+
+        return {
+            [SELECTOR](node) {
+                if (option === "first" && isLastChild(node)) {
+                    return;
+                }
+
+                const lastToken = sourceCode.getLastToken(node);
+
+                if (astUtils.isSemicolonToken(lastToken)) {
+                    check(lastToken, option);
+                }
+            },
+
+            ForStatement(node) {
+                const firstSemi = node.init && sourceCode.getTokenAfter(node.init, astUtils.isSemicolonToken);
+                const secondSemi = node.test && sourceCode.getTokenAfter(node.test, astUtils.isSemicolonToken);
+
+                if (firstSemi) {
+                    check(firstSemi, "last");
+                }
+                if (secondSemi) {
+                    check(secondSemi, "last");
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/semi.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/semi.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/semi.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,438 @@
+/**
+ * @fileoverview Rule to flag missing semicolons.
+ * @author Nicholas C. Zakas
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const FixTracker = require("./utils/fix-tracker");
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require or disallow semicolons instead of ASI",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/semi"
+        },
+
+        fixable: "code",
+
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["never"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                beforeStatementContinuationChars: {
+                                    enum: ["always", "any", "never"]
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["always"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                omitLastInOneLineBlock: { type: "boolean" },
+                                omitLastInOneLineClassBody: { type: "boolean" }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    minItems: 0,
+                    maxItems: 2
+                }
+            ]
+        },
+
+        messages: {
+            missingSemi: "Missing semicolon.",
+            extraSemi: "Extra semicolon."
+        }
+    },
+
+    create(context) {
+
+        const OPT_OUT_PATTERN = /^[-[(/+`]/u; // One of [(/+-`
+        const unsafeClassFieldNames = new Set(["get", "set", "static"]);
+        const unsafeClassFieldFollowers = new Set(["*", "in", "instanceof"]);
+        const options = context.options[1];
+        const never = context.options[0] === "never";
+        const exceptOneLine = Boolean(options && options.omitLastInOneLineBlock);
+        const exceptOneLineClassBody = Boolean(options && options.omitLastInOneLineClassBody);
+        const beforeStatementContinuationChars = options && options.beforeStatementContinuationChars || "any";
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Reports a semicolon error with appropriate location and message.
+         * @param {ASTNode} node The node with an extra or missing semicolon.
+         * @param {boolean} missing True if the semicolon is missing.
+         * @returns {void}
+         */
+        function report(node, missing) {
+            const lastToken = sourceCode.getLastToken(node);
+            let messageId,
+                fix,
+                loc;
+
+            if (!missing) {
+                messageId = "missingSemi";
+                loc = {
+                    start: lastToken.loc.end,
+                    end: astUtils.getNextLocation(sourceCode, lastToken.loc.end)
+                };
+                fix = function(fixer) {
+                    return fixer.insertTextAfter(lastToken, ";");
+                };
+            } else {
+                messageId = "extraSemi";
+                loc = lastToken.loc;
+                fix = function(fixer) {
+
+                    /*
+                     * Expand the replacement range to include the surrounding
+                     * tokens to avoid conflicting with no-extra-semi.
+                     * https://github.com/eslint/eslint/issues/7928
+                     */
+                    return new FixTracker(fixer, sourceCode)
+                        .retainSurroundingTokens(lastToken)
+                        .remove(lastToken);
+                };
+            }
+
+            context.report({
+                node,
+                loc,
+                messageId,
+                fix
+            });
+
+        }
+
+        /**
+         * Check whether a given semicolon token is redundant.
+         * @param {Token} semiToken A semicolon token to check.
+         * @returns {boolean} `true` if the next token is `;` or `}`.
+         */
+        function isRedundantSemi(semiToken) {
+            const nextToken = sourceCode.getTokenAfter(semiToken);
+
+            return (
+                !nextToken ||
+                astUtils.isClosingBraceToken(nextToken) ||
+                astUtils.isSemicolonToken(nextToken)
+            );
+        }
+
+        /**
+         * Check whether a given token is the closing brace of an arrow function.
+         * @param {Token} lastToken A token to check.
+         * @returns {boolean} `true` if the token is the closing brace of an arrow function.
+         */
+        function isEndOfArrowBlock(lastToken) {
+            if (!astUtils.isClosingBraceToken(lastToken)) {
+                return false;
+            }
+            const node = sourceCode.getNodeByRangeIndex(lastToken.range[0]);
+
+            return (
+                node.type === "BlockStatement" &&
+                node.parent.type === "ArrowFunctionExpression"
+            );
+        }
+
+        /**
+         * Checks if a given PropertyDefinition node followed by a semicolon
+         * can safely remove that semicolon. It is not to safe to remove if
+         * the class field name is "get", "set", or "static", or if
+         * followed by a generator method.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} `true` if the node cannot have the semicolon
+         *      removed.
+         */
+        function maybeClassFieldAsiHazard(node) {
+
+            if (node.type !== "PropertyDefinition") {
+                return false;
+            }
+
+            /*
+             * Computed property names and non-identifiers are always safe
+             * as they can be distinguished from keywords easily.
+             */
+            const needsNameCheck = !node.computed && node.key.type === "Identifier";
+
+            /*
+             * Certain names are problematic unless they also have a
+             * a way to distinguish between keywords and property
+             * names.
+             */
+            if (needsNameCheck && unsafeClassFieldNames.has(node.key.name)) {
+
+                /*
+                 * Special case: If the field name is `static`,
+                 * it is only valid if the field is marked as static,
+                 * so "static static" is okay but "static" is not.
+                 */
+                const isStaticStatic = node.static && node.key.name === "static";
+
+                /*
+                 * For other unsafe names, we only care if there is no
+                 * initializer. No initializer = hazard.
+                 */
+                if (!isStaticStatic && !node.value) {
+                    return true;
+                }
+            }
+
+            const followingToken = sourceCode.getTokenAfter(node);
+
+            return unsafeClassFieldFollowers.has(followingToken.value);
+        }
+
+        /**
+         * Check whether a given node is on the same line with the next token.
+         * @param {Node} node A statement node to check.
+         * @returns {boolean} `true` if the node is on the same line with the next token.
+         */
+        function isOnSameLineWithNextToken(node) {
+            const prevToken = sourceCode.getLastToken(node, 1);
+            const nextToken = sourceCode.getTokenAfter(node);
+
+            return !!nextToken && astUtils.isTokenOnSameLine(prevToken, nextToken);
+        }
+
+        /**
+         * Check whether a given node can connect the next line if the next line is unreliable.
+         * @param {Node} node A statement node to check.
+         * @returns {boolean} `true` if the node can connect the next line.
+         */
+        function maybeAsiHazardAfter(node) {
+            const t = node.type;
+
+            if (t === "DoWhileStatement" ||
+                t === "BreakStatement" ||
+                t === "ContinueStatement" ||
+                t === "DebuggerStatement" ||
+                t === "ImportDeclaration" ||
+                t === "ExportAllDeclaration"
+            ) {
+                return false;
+            }
+            if (t === "ReturnStatement") {
+                return Boolean(node.argument);
+            }
+            if (t === "ExportNamedDeclaration") {
+                return Boolean(node.declaration);
+            }
+            if (isEndOfArrowBlock(sourceCode.getLastToken(node, 1))) {
+                return false;
+            }
+
+            return true;
+        }
+
+        /**
+         * Check whether a given token can connect the previous statement.
+         * @param {Token} token A token to check.
+         * @returns {boolean} `true` if the token is one of `[`, `(`, `/`, `+`, `-`, ```, `++`, and `--`.
+         */
+        function maybeAsiHazardBefore(token) {
+            return (
+                Boolean(token) &&
+                OPT_OUT_PATTERN.test(token.value) &&
+                token.value !== "++" &&
+                token.value !== "--"
+            );
+        }
+
+        /**
+         * Check if the semicolon of a given node is unnecessary, only true if:
+         *   - next token is a valid statement divider (`;` or `}`).
+         *   - next token is on a new line and the node is not connectable to the new line.
+         * @param {Node} node A statement node to check.
+         * @returns {boolean} whether the semicolon is unnecessary.
+         */
+        function canRemoveSemicolon(node) {
+            if (isRedundantSemi(sourceCode.getLastToken(node))) {
+                return true; // `;;` or `;}`
+            }
+            if (maybeClassFieldAsiHazard(node)) {
+                return false;
+            }
+            if (isOnSameLineWithNextToken(node)) {
+                return false; // One liner.
+            }
+
+            // continuation characters should not apply to class fields
+            if (
+                node.type !== "PropertyDefinition" &&
+                beforeStatementContinuationChars === "never" &&
+                !maybeAsiHazardAfter(node)
+            ) {
+                return true; // ASI works. This statement doesn't connect to the next.
+            }
+            if (!maybeAsiHazardBefore(sourceCode.getTokenAfter(node))) {
+                return true; // ASI works. The next token doesn't connect to this statement.
+            }
+
+            return false;
+        }
+
+        /**
+         * Checks a node to see if it's the last item in a one-liner block.
+         * Block is any `BlockStatement` or `StaticBlock` node. Block is a one-liner if its
+         * braces (and consequently everything between them) are on the same line.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} whether the node is the last item in a one-liner block.
+         */
+        function isLastInOneLinerBlock(node) {
+            const parent = node.parent;
+            const nextToken = sourceCode.getTokenAfter(node);
+
+            if (!nextToken || nextToken.value !== "}") {
+                return false;
+            }
+
+            if (parent.type === "BlockStatement") {
+                return parent.loc.start.line === parent.loc.end.line;
+            }
+
+            if (parent.type === "StaticBlock") {
+                const openingBrace = sourceCode.getFirstToken(parent, { skip: 1 }); // skip the `static` token
+
+                return openingBrace.loc.start.line === parent.loc.end.line;
+            }
+
+            return false;
+        }
+
+        /**
+         * Checks a node to see if it's the last item in a one-liner `ClassBody` node.
+         * ClassBody is a one-liner if its braces (and consequently everything between them) are on the same line.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} whether the node is the last item in a one-liner ClassBody.
+         */
+        function isLastInOneLinerClassBody(node) {
+            const parent = node.parent;
+            const nextToken = sourceCode.getTokenAfter(node);
+
+            if (!nextToken || nextToken.value !== "}") {
+                return false;
+            }
+
+            if (parent.type === "ClassBody") {
+                return parent.loc.start.line === parent.loc.end.line;
+            }
+
+            return false;
+        }
+
+        /**
+         * Checks a node to see if it's followed by a semicolon.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         */
+        function checkForSemicolon(node) {
+            const isSemi = astUtils.isSemicolonToken(sourceCode.getLastToken(node));
+
+            if (never) {
+                if (isSemi && canRemoveSemicolon(node)) {
+                    report(node, true);
+                } else if (
+                    !isSemi && beforeStatementContinuationChars === "always" &&
+                    node.type !== "PropertyDefinition" &&
+                    maybeAsiHazardBefore(sourceCode.getTokenAfter(node))
+                ) {
+                    report(node);
+                }
+            } else {
+                const oneLinerBlock = (exceptOneLine && isLastInOneLinerBlock(node));
+                const oneLinerClassBody = (exceptOneLineClassBody && isLastInOneLinerClassBody(node));
+                const oneLinerBlockOrClassBody = oneLinerBlock || oneLinerClassBody;
+
+                if (isSemi && oneLinerBlockOrClassBody) {
+                    report(node, true);
+                } else if (!isSemi && !oneLinerBlockOrClassBody) {
+                    report(node);
+                }
+            }
+        }
+
+        /**
+         * Checks to see if there's a semicolon after a variable declaration.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         */
+        function checkForSemicolonForVariableDeclaration(node) {
+            const parent = node.parent;
+
+            if ((parent.type !== "ForStatement" || parent.init !== node) &&
+                (!/^For(?:In|Of)Statement/u.test(parent.type) || parent.left !== node)
+            ) {
+                checkForSemicolon(node);
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            VariableDeclaration: checkForSemicolonForVariableDeclaration,
+            ExpressionStatement: checkForSemicolon,
+            ReturnStatement: checkForSemicolon,
+            ThrowStatement: checkForSemicolon,
+            DoWhileStatement: checkForSemicolon,
+            DebuggerStatement: checkForSemicolon,
+            BreakStatement: checkForSemicolon,
+            ContinueStatement: checkForSemicolon,
+            ImportDeclaration: checkForSemicolon,
+            ExportAllDeclaration: checkForSemicolon,
+            ExportNamedDeclaration(node) {
+                if (!node.declaration) {
+                    checkForSemicolon(node);
+                }
+            },
+            ExportDefaultDeclaration(node) {
+                if (!/(?:Class|Function)Declaration/u.test(node.declaration.type)) {
+                    checkForSemicolon(node);
+                }
+            },
+            PropertyDefinition: checkForSemicolon
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/sort-imports.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/sort-imports.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/sort-imports.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,241 @@
+/**
+ * @fileoverview Rule to require sorting of import declarations
+ * @author Christian Schuller
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce sorted import declarations within modules",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/sort-imports"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    ignoreCase: {
+                        type: "boolean",
+                        default: false
+                    },
+                    memberSyntaxSortOrder: {
+                        type: "array",
+                        items: {
+                            enum: ["none", "all", "multiple", "single"]
+                        },
+                        uniqueItems: true,
+                        minItems: 4,
+                        maxItems: 4
+                    },
+                    ignoreDeclarationSort: {
+                        type: "boolean",
+                        default: false
+                    },
+                    ignoreMemberSort: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowSeparatedGroups: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "code",
+
+        messages: {
+            sortImportsAlphabetically: "Imports should be sorted alphabetically.",
+            sortMembersAlphabetically: "Member '{{memberName}}' of the import declaration should be sorted alphabetically.",
+            unexpectedSyntaxOrder: "Expected '{{syntaxA}}' syntax before '{{syntaxB}}' syntax."
+        }
+    },
+
+    create(context) {
+
+        const configuration = context.options[0] || {},
+            ignoreCase = configuration.ignoreCase || false,
+            ignoreDeclarationSort = configuration.ignoreDeclarationSort || false,
+            ignoreMemberSort = configuration.ignoreMemberSort || false,
+            memberSyntaxSortOrder = configuration.memberSyntaxSortOrder || ["none", "all", "multiple", "single"],
+            allowSeparatedGroups = configuration.allowSeparatedGroups || false,
+            sourceCode = context.sourceCode;
+        let previousDeclaration = null;
+
+        /**
+         * Gets the used member syntax style.
+         *
+         * import "my-module.js" --> none
+         * import * as myModule from "my-module.js" --> all
+         * import {myMember} from "my-module.js" --> single
+         * import {foo, bar} from  "my-module.js" --> multiple
+         * @param {ASTNode} node the ImportDeclaration node.
+         * @returns {string} used member parameter style, ["all", "multiple", "single"]
+         */
+        function usedMemberSyntax(node) {
+            if (node.specifiers.length === 0) {
+                return "none";
+            }
+            if (node.specifiers[0].type === "ImportNamespaceSpecifier") {
+                return "all";
+            }
+            if (node.specifiers.length === 1) {
+                return "single";
+            }
+            return "multiple";
+
+        }
+
+        /**
+         * Gets the group by member parameter index for given declaration.
+         * @param {ASTNode} node the ImportDeclaration node.
+         * @returns {number} the declaration group by member index.
+         */
+        function getMemberParameterGroupIndex(node) {
+            return memberSyntaxSortOrder.indexOf(usedMemberSyntax(node));
+        }
+
+        /**
+         * Gets the local name of the first imported module.
+         * @param {ASTNode} node the ImportDeclaration node.
+         * @returns {?string} the local name of the first imported module.
+         */
+        function getFirstLocalMemberName(node) {
+            if (node.specifiers[0]) {
+                return node.specifiers[0].local.name;
+            }
+            return null;
+
+        }
+
+        /**
+         * Calculates number of lines between two nodes. It is assumed that the given `left` node appears before
+         * the given `right` node in the source code. Lines are counted from the end of the `left` node till the
+         * start of the `right` node. If the given nodes are on the same line, it returns `0`, same as if they were
+         * on two consecutive lines.
+         * @param {ASTNode} left node that appears before the given `right` node.
+         * @param {ASTNode} right node that appears after the given `left` node.
+         * @returns {number} number of lines between nodes.
+         */
+        function getNumberOfLinesBetween(left, right) {
+            return Math.max(right.loc.start.line - left.loc.end.line - 1, 0);
+        }
+
+        return {
+            ImportDeclaration(node) {
+                if (!ignoreDeclarationSort) {
+                    if (
+                        previousDeclaration &&
+                        allowSeparatedGroups &&
+                        getNumberOfLinesBetween(previousDeclaration, node) > 0
+                    ) {
+
+                        // reset declaration sort
+                        previousDeclaration = null;
+                    }
+
+                    if (previousDeclaration) {
+                        const currentMemberSyntaxGroupIndex = getMemberParameterGroupIndex(node),
+                            previousMemberSyntaxGroupIndex = getMemberParameterGroupIndex(previousDeclaration);
+                        let currentLocalMemberName = getFirstLocalMemberName(node),
+                            previousLocalMemberName = getFirstLocalMemberName(previousDeclaration);
+
+                        if (ignoreCase) {
+                            previousLocalMemberName = previousLocalMemberName && previousLocalMemberName.toLowerCase();
+                            currentLocalMemberName = currentLocalMemberName && currentLocalMemberName.toLowerCase();
+                        }
+
+                        /*
+                         * When the current declaration uses a different member syntax,
+                         * then check if the ordering is correct.
+                         * Otherwise, make a default string compare (like rule sort-vars to be consistent) of the first used local member name.
+                         */
+                        if (currentMemberSyntaxGroupIndex !== previousMemberSyntaxGroupIndex) {
+                            if (currentMemberSyntaxGroupIndex < previousMemberSyntaxGroupIndex) {
+                                context.report({
+                                    node,
+                                    messageId: "unexpectedSyntaxOrder",
+                                    data: {
+                                        syntaxA: memberSyntaxSortOrder[currentMemberSyntaxGroupIndex],
+                                        syntaxB: memberSyntaxSortOrder[previousMemberSyntaxGroupIndex]
+                                    }
+                                });
+                            }
+                        } else {
+                            if (previousLocalMemberName &&
+                                currentLocalMemberName &&
+                                currentLocalMemberName < previousLocalMemberName
+                            ) {
+                                context.report({
+                                    node,
+                                    messageId: "sortImportsAlphabetically"
+                                });
+                            }
+                        }
+                    }
+
+                    previousDeclaration = node;
+                }
+
+                if (!ignoreMemberSort) {
+                    const importSpecifiers = node.specifiers.filter(specifier => specifier.type === "ImportSpecifier");
+                    const getSortableName = ignoreCase ? specifier => specifier.local.name.toLowerCase() : specifier => specifier.local.name;
+                    const firstUnsortedIndex = importSpecifiers.map(getSortableName).findIndex((name, index, array) => array[index - 1] > name);
+
+                    if (firstUnsortedIndex !== -1) {
+                        context.report({
+                            node: importSpecifiers[firstUnsortedIndex],
+                            messageId: "sortMembersAlphabetically",
+                            data: { memberName: importSpecifiers[firstUnsortedIndex].local.name },
+                            fix(fixer) {
+                                if (importSpecifiers.some(specifier =>
+                                    sourceCode.getCommentsBefore(specifier).length || sourceCode.getCommentsAfter(specifier).length)) {
+
+                                    // If there are comments in the ImportSpecifier list, don't rearrange the specifiers.
+                                    return null;
+                                }
+
+                                return fixer.replaceTextRange(
+                                    [importSpecifiers[0].range[0], importSpecifiers[importSpecifiers.length - 1].range[1]],
+                                    importSpecifiers
+
+                                        // Clone the importSpecifiers array to avoid mutating it
+                                        .slice()
+
+                                        // Sort the array into the desired order
+                                        .sort((specifierA, specifierB) => {
+                                            const aName = getSortableName(specifierA);
+                                            const bName = getSortableName(specifierB);
+
+                                            return aName > bName ? 1 : -1;
+                                        })
+
+                                        // Build a string out of the sorted list of import specifiers and the text between the originals
+                                        .reduce((sourceText, specifier, index) => {
+                                            const textAfterSpecifier = index === importSpecifiers.length - 1
+                                                ? ""
+                                                : sourceCode.getText().slice(importSpecifiers[index].range[1], importSpecifiers[index + 1].range[0]);
+
+                                            return sourceText + sourceCode.getText(specifier) + textAfterSpecifier;
+                                        }, "")
+                                );
+                            }
+                        });
+                    }
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/sort-keys.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/sort-keys.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/sort-keys.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,230 @@
+/**
+ * @fileoverview Rule to require object keys to be sorted
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils"),
+    naturalCompare = require("natural-compare");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Gets the property name of the given `Property` node.
+ *
+ * - If the property's key is an `Identifier` node, this returns the key's name
+ *   whether it's a computed property or not.
+ * - If the property has a static name, this returns the static name.
+ * - Otherwise, this returns null.
+ * @param {ASTNode} node The `Property` node to get.
+ * @returns {string|null} The property name or null.
+ * @private
+ */
+function getPropertyName(node) {
+    const staticName = astUtils.getStaticPropertyName(node);
+
+    if (staticName !== null) {
+        return staticName;
+    }
+
+    return node.key.name || null;
+}
+
+/**
+ * Functions which check that the given 2 names are in specific order.
+ *
+ * Postfix `I` is meant insensitive.
+ * Postfix `N` is meant natural.
+ * @private
+ */
+const isValidOrders = {
+    asc(a, b) {
+        return a <= b;
+    },
+    ascI(a, b) {
+        return a.toLowerCase() <= b.toLowerCase();
+    },
+    ascN(a, b) {
+        return naturalCompare(a, b) <= 0;
+    },
+    ascIN(a, b) {
+        return naturalCompare(a.toLowerCase(), b.toLowerCase()) <= 0;
+    },
+    desc(a, b) {
+        return isValidOrders.asc(b, a);
+    },
+    descI(a, b) {
+        return isValidOrders.ascI(b, a);
+    },
+    descN(a, b) {
+        return isValidOrders.ascN(b, a);
+    },
+    descIN(a, b) {
+        return isValidOrders.ascIN(b, a);
+    }
+};
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require object keys to be sorted",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/sort-keys"
+        },
+
+        schema: [
+            {
+                enum: ["asc", "desc"]
+            },
+            {
+                type: "object",
+                properties: {
+                    caseSensitive: {
+                        type: "boolean",
+                        default: true
+                    },
+                    natural: {
+                        type: "boolean",
+                        default: false
+                    },
+                    minKeys: {
+                        type: "integer",
+                        minimum: 2,
+                        default: 2
+                    },
+                    allowLineSeparatedGroups: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            sortKeys: "Expected object keys to be in {{natural}}{{insensitive}}{{order}}ending order. '{{thisName}}' should be before '{{prevName}}'."
+        }
+    },
+
+    create(context) {
+
+        // Parse options.
+        const order = context.options[0] || "asc";
+        const options = context.options[1];
+        const insensitive = options && options.caseSensitive === false;
+        const natural = options && options.natural;
+        const minKeys = options && options.minKeys;
+        const allowLineSeparatedGroups = options && options.allowLineSeparatedGroups || false;
+        const isValidOrder = isValidOrders[
+            order + (insensitive ? "I" : "") + (natural ? "N" : "")
+        ];
+
+        // The stack to save the previous property's name for each object literals.
+        let stack = null;
+        const sourceCode = context.sourceCode;
+
+        return {
+            ObjectExpression(node) {
+                stack = {
+                    upper: stack,
+                    prevNode: null,
+                    prevBlankLine: false,
+                    prevName: null,
+                    numKeys: node.properties.length
+                };
+            },
+
+            "ObjectExpression:exit"() {
+                stack = stack.upper;
+            },
+
+            SpreadElement(node) {
+                if (node.parent.type === "ObjectExpression") {
+                    stack.prevName = null;
+                }
+            },
+
+            Property(node) {
+                if (node.parent.type === "ObjectPattern") {
+                    return;
+                }
+
+                const prevName = stack.prevName;
+                const numKeys = stack.numKeys;
+                const thisName = getPropertyName(node);
+
+                // Get tokens between current node and previous node
+                const tokens = stack.prevNode && sourceCode
+                    .getTokensBetween(stack.prevNode, node, { includeComments: true });
+
+                let isBlankLineBetweenNodes = stack.prevBlankLine;
+
+                if (tokens) {
+
+                    // check blank line between tokens
+                    tokens.forEach((token, index) => {
+                        const previousToken = tokens[index - 1];
+
+                        if (previousToken && (token.loc.start.line - previousToken.loc.end.line > 1)) {
+                            isBlankLineBetweenNodes = true;
+                        }
+                    });
+
+                    // check blank line between the current node and the last token
+                    if (!isBlankLineBetweenNodes && (node.loc.start.line - tokens[tokens.length - 1].loc.end.line > 1)) {
+                        isBlankLineBetweenNodes = true;
+                    }
+
+                    // check blank line between the first token and the previous node
+                    if (!isBlankLineBetweenNodes && (tokens[0].loc.start.line - stack.prevNode.loc.end.line > 1)) {
+                        isBlankLineBetweenNodes = true;
+                    }
+                }
+
+                stack.prevNode = node;
+
+                if (thisName !== null) {
+                    stack.prevName = thisName;
+                }
+
+                if (allowLineSeparatedGroups && isBlankLineBetweenNodes) {
+                    stack.prevBlankLine = thisName === null;
+                    return;
+                }
+
+                if (prevName === null || thisName === null || numKeys < minKeys) {
+                    return;
+                }
+
+                if (!isValidOrder(prevName, thisName)) {
+                    context.report({
+                        node,
+                        loc: node.key.loc,
+                        messageId: "sortKeys",
+                        data: {
+                            thisName,
+                            prevName,
+                            order,
+                            insensitive: insensitive ? "insensitive " : "",
+                            natural: natural ? "natural " : ""
+                        }
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/sort-vars.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/sort-vars.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/sort-vars.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,104 @@
+/**
+ * @fileoverview Rule to require sorting of variables within a single Variable Declaration block
+ * @author Ilya Volodin
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require variables within the same declaration block to be sorted",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/sort-vars"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    ignoreCase: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "code",
+
+        messages: {
+            sortVars: "Variables within the same declaration block should be sorted alphabetically."
+        }
+    },
+
+    create(context) {
+
+        const configuration = context.options[0] || {},
+            ignoreCase = configuration.ignoreCase || false,
+            sourceCode = context.sourceCode;
+
+        return {
+            VariableDeclaration(node) {
+                const idDeclarations = node.declarations.filter(decl => decl.id.type === "Identifier");
+                const getSortableName = ignoreCase ? decl => decl.id.name.toLowerCase() : decl => decl.id.name;
+                const unfixable = idDeclarations.some(decl => decl.init !== null && decl.init.type !== "Literal");
+                let fixed = false;
+
+                idDeclarations.slice(1).reduce((memo, decl) => {
+                    const lastVariableName = getSortableName(memo),
+                        currentVariableName = getSortableName(decl);
+
+                    if (currentVariableName < lastVariableName) {
+                        context.report({
+                            node: decl,
+                            messageId: "sortVars",
+                            fix(fixer) {
+                                if (unfixable || fixed) {
+                                    return null;
+                                }
+                                return fixer.replaceTextRange(
+                                    [idDeclarations[0].range[0], idDeclarations[idDeclarations.length - 1].range[1]],
+                                    idDeclarations
+
+                                        // Clone the idDeclarations array to avoid mutating it
+                                        .slice()
+
+                                        // Sort the array into the desired order
+                                        .sort((declA, declB) => {
+                                            const aName = getSortableName(declA);
+                                            const bName = getSortableName(declB);
+
+                                            return aName > bName ? 1 : -1;
+                                        })
+
+                                        // Build a string out of the sorted list of identifier declarations and the text between the originals
+                                        .reduce((sourceText, identifier, index) => {
+                                            const textAfterIdentifier = index === idDeclarations.length - 1
+                                                ? ""
+                                                : sourceCode.getText().slice(idDeclarations[index].range[1], idDeclarations[index + 1].range[0]);
+
+                                            return sourceText + sourceCode.getText(identifier) + textAfterIdentifier;
+                                        }, "")
+
+                                );
+                            }
+                        });
+                        fixed = true;
+                        return memo;
+                    }
+                    return decl;
+
+                }, idDeclarations[0]);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/space-before-blocks.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/space-before-blocks.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/space-before-blocks.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,204 @@
+/**
+ * @fileoverview A rule to ensure whitespace before blocks.
+ * @author Mathias Schreck <https://github.com/lo1tuma>
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Checks whether the given node represents the body of a function.
+ * @param {ASTNode} node the node to check.
+ * @returns {boolean} `true` if the node is function body.
+ */
+function isFunctionBody(node) {
+    const parent = node.parent;
+
+    return (
+        node.type === "BlockStatement" &&
+        astUtils.isFunction(parent) &&
+        parent.body === node
+    );
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent spacing before blocks",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/space-before-blocks"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["always", "never"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            keywords: {
+                                enum: ["always", "never", "off"]
+                            },
+                            functions: {
+                                enum: ["always", "never", "off"]
+                            },
+                            classes: {
+                                enum: ["always", "never", "off"]
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            unexpectedSpace: "Unexpected space before opening brace.",
+            missingSpace: "Missing space before opening brace."
+        }
+    },
+
+    create(context) {
+        const config = context.options[0],
+            sourceCode = context.sourceCode;
+        let alwaysFunctions = true,
+            alwaysKeywords = true,
+            alwaysClasses = true,
+            neverFunctions = false,
+            neverKeywords = false,
+            neverClasses = false;
+
+        if (typeof config === "object") {
+            alwaysFunctions = config.functions === "always";
+            alwaysKeywords = config.keywords === "always";
+            alwaysClasses = config.classes === "always";
+            neverFunctions = config.functions === "never";
+            neverKeywords = config.keywords === "never";
+            neverClasses = config.classes === "never";
+        } else if (config === "never") {
+            alwaysFunctions = false;
+            alwaysKeywords = false;
+            alwaysClasses = false;
+            neverFunctions = true;
+            neverKeywords = true;
+            neverClasses = true;
+        }
+
+        /**
+         * Checks whether the spacing before the given block is already controlled by another rule:
+         * - `arrow-spacing` checks spaces after `=>`.
+         * - `keyword-spacing` checks spaces after keywords in certain contexts.
+         * - `switch-colon-spacing` checks spaces after `:` of switch cases.
+         * @param {Token} precedingToken first token before the block.
+         * @param {ASTNode|Token} node `BlockStatement` node or `{` token of a `SwitchStatement` node.
+         * @returns {boolean} `true` if requiring or disallowing spaces before the given block could produce conflicts with other rules.
+         */
+        function isConflicted(precedingToken, node) {
+            return (
+                astUtils.isArrowToken(precedingToken) ||
+                (
+                    astUtils.isKeywordToken(precedingToken) &&
+                    !isFunctionBody(node)
+                ) ||
+                (
+                    astUtils.isColonToken(precedingToken) &&
+                    node.parent &&
+                    node.parent.type === "SwitchCase" &&
+                    precedingToken === astUtils.getSwitchCaseColonToken(node.parent, sourceCode)
+                )
+            );
+        }
+
+        /**
+         * Checks the given BlockStatement node has a preceding space if it doesn’t start on a new line.
+         * @param {ASTNode|Token} node The AST node of a BlockStatement.
+         * @returns {void} undefined.
+         */
+        function checkPrecedingSpace(node) {
+            const precedingToken = sourceCode.getTokenBefore(node);
+
+            if (precedingToken && !isConflicted(precedingToken, node) && astUtils.isTokenOnSameLine(precedingToken, node)) {
+                const hasSpace = sourceCode.isSpaceBetweenTokens(precedingToken, node);
+                let requireSpace;
+                let requireNoSpace;
+
+                if (isFunctionBody(node)) {
+                    requireSpace = alwaysFunctions;
+                    requireNoSpace = neverFunctions;
+                } else if (node.type === "ClassBody") {
+                    requireSpace = alwaysClasses;
+                    requireNoSpace = neverClasses;
+                } else {
+                    requireSpace = alwaysKeywords;
+                    requireNoSpace = neverKeywords;
+                }
+
+                if (requireSpace && !hasSpace) {
+                    context.report({
+                        node,
+                        messageId: "missingSpace",
+                        fix(fixer) {
+                            return fixer.insertTextBefore(node, " ");
+                        }
+                    });
+                } else if (requireNoSpace && hasSpace) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedSpace",
+                        fix(fixer) {
+                            return fixer.removeRange([precedingToken.range[1], node.range[0]]);
+                        }
+                    });
+                }
+            }
+        }
+
+        /**
+         * Checks if the CaseBlock of an given SwitchStatement node has a preceding space.
+         * @param {ASTNode} node The node of a SwitchStatement.
+         * @returns {void} undefined.
+         */
+        function checkSpaceBeforeCaseBlock(node) {
+            const cases = node.cases;
+            let openingBrace;
+
+            if (cases.length > 0) {
+                openingBrace = sourceCode.getTokenBefore(cases[0]);
+            } else {
+                openingBrace = sourceCode.getLastToken(node, 1);
+            }
+
+            checkPrecedingSpace(openingBrace);
+        }
+
+        return {
+            BlockStatement: checkPrecedingSpace,
+            ClassBody: checkPrecedingSpace,
+            SwitchStatement: checkSpaceBeforeCaseBlock
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/space-before-function-paren.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/space-before-function-paren.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/space-before-function-paren.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,167 @@
+/**
+ * @fileoverview Rule to validate spacing before function paren.
+ * @author Mathias Schreck <https://github.com/lo1tuma>
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent spacing before `function` definition opening parenthesis",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/space-before-function-paren"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["always", "never"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            anonymous: {
+                                enum: ["always", "never", "ignore"]
+                            },
+                            named: {
+                                enum: ["always", "never", "ignore"]
+                            },
+                            asyncArrow: {
+                                enum: ["always", "never", "ignore"]
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+
+        messages: {
+            unexpectedSpace: "Unexpected space before function parentheses.",
+            missingSpace: "Missing space before function parentheses."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const baseConfig = typeof context.options[0] === "string" ? context.options[0] : "always";
+        const overrideConfig = typeof context.options[0] === "object" ? context.options[0] : {};
+
+        /**
+         * Determines whether a function has a name.
+         * @param {ASTNode} node The function node.
+         * @returns {boolean} Whether the function has a name.
+         */
+        function isNamedFunction(node) {
+            if (node.id) {
+                return true;
+            }
+
+            const parent = node.parent;
+
+            return parent.type === "MethodDefinition" ||
+                (parent.type === "Property" &&
+                    (
+                        parent.kind === "get" ||
+                        parent.kind === "set" ||
+                        parent.method
+                    )
+                );
+        }
+
+        /**
+         * Gets the config for a given function
+         * @param {ASTNode} node The function node
+         * @returns {string} "always", "never", or "ignore"
+         */
+        function getConfigForFunction(node) {
+            if (node.type === "ArrowFunctionExpression") {
+
+                // Always ignore non-async functions and arrow functions without parens, e.g. async foo => bar
+                if (node.async && astUtils.isOpeningParenToken(sourceCode.getFirstToken(node, { skip: 1 }))) {
+                    return overrideConfig.asyncArrow || baseConfig;
+                }
+            } else if (isNamedFunction(node)) {
+                return overrideConfig.named || baseConfig;
+
+            // `generator-star-spacing` should warn anonymous generators. E.g. `function* () {}`
+            } else if (!node.generator) {
+                return overrideConfig.anonymous || baseConfig;
+            }
+
+            return "ignore";
+        }
+
+        /**
+         * Checks the parens of a function node
+         * @param {ASTNode} node A function node
+         * @returns {void}
+         */
+        function checkFunction(node) {
+            const functionConfig = getConfigForFunction(node);
+
+            if (functionConfig === "ignore") {
+                return;
+            }
+
+            const rightToken = sourceCode.getFirstToken(node, astUtils.isOpeningParenToken);
+            const leftToken = sourceCode.getTokenBefore(rightToken);
+            const hasSpacing = sourceCode.isSpaceBetweenTokens(leftToken, rightToken);
+
+            if (hasSpacing && functionConfig === "never") {
+                context.report({
+                    node,
+                    loc: {
+                        start: leftToken.loc.end,
+                        end: rightToken.loc.start
+                    },
+                    messageId: "unexpectedSpace",
+                    fix(fixer) {
+                        const comments = sourceCode.getCommentsBefore(rightToken);
+
+                        // Don't fix anything if there's a single line comment between the left and the right token
+                        if (comments.some(comment => comment.type === "Line")) {
+                            return null;
+                        }
+                        return fixer.replaceTextRange(
+                            [leftToken.range[1], rightToken.range[0]],
+                            comments.reduce((text, comment) => text + sourceCode.getText(comment), "")
+                        );
+                    }
+                });
+            } else if (!hasSpacing && functionConfig === "always") {
+                context.report({
+                    node,
+                    loc: rightToken.loc,
+                    messageId: "missingSpace",
+                    fix: fixer => fixer.insertTextAfter(leftToken, " ")
+                });
+            }
+        }
+
+        return {
+            ArrowFunctionExpression: checkFunction,
+            FunctionDeclaration: checkFunction,
+            FunctionExpression: checkFunction
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/space-in-parens.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/space-in-parens.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/space-in-parens.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,285 @@
+/**
+ * @fileoverview Disallows or enforces spaces inside of parentheses.
+ * @author Jonathan Rajavuori
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent spacing inside parentheses",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/space-in-parens"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            },
+            {
+                type: "object",
+                properties: {
+                    exceptions: {
+                        type: "array",
+                        items: {
+                            enum: ["{}", "[]", "()", "empty"]
+                        },
+                        uniqueItems: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            missingOpeningSpace: "There must be a space after this paren.",
+            missingClosingSpace: "There must be a space before this paren.",
+            rejectedOpeningSpace: "There should be no space after this paren.",
+            rejectedClosingSpace: "There should be no space before this paren."
+        }
+    },
+
+    create(context) {
+        const ALWAYS = context.options[0] === "always",
+            exceptionsArrayOptions = (context.options[1] && context.options[1].exceptions) || [],
+            options = {};
+
+        let exceptions;
+
+        if (exceptionsArrayOptions.length) {
+            options.braceException = exceptionsArrayOptions.includes("{}");
+            options.bracketException = exceptionsArrayOptions.includes("[]");
+            options.parenException = exceptionsArrayOptions.includes("()");
+            options.empty = exceptionsArrayOptions.includes("empty");
+        }
+
+        /**
+         * Produces an object with the opener and closer exception values
+         * @returns {Object} `openers` and `closers` exception values
+         * @private
+         */
+        function getExceptions() {
+            const openers = [],
+                closers = [];
+
+            if (options.braceException) {
+                openers.push("{");
+                closers.push("}");
+            }
+
+            if (options.bracketException) {
+                openers.push("[");
+                closers.push("]");
+            }
+
+            if (options.parenException) {
+                openers.push("(");
+                closers.push(")");
+            }
+
+            if (options.empty) {
+                openers.push(")");
+                closers.push("(");
+            }
+
+            return {
+                openers,
+                closers
+            };
+        }
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Determines if a token is one of the exceptions for the opener paren
+         * @param {Object} token The token to check
+         * @returns {boolean} True if the token is one of the exceptions for the opener paren
+         */
+        function isOpenerException(token) {
+            return exceptions.openers.includes(token.value);
+        }
+
+        /**
+         * Determines if a token is one of the exceptions for the closer paren
+         * @param {Object} token The token to check
+         * @returns {boolean} True if the token is one of the exceptions for the closer paren
+         */
+        function isCloserException(token) {
+            return exceptions.closers.includes(token.value);
+        }
+
+        /**
+         * Determines if an opening paren is immediately followed by a required space
+         * @param {Object} openingParenToken The paren token
+         * @param {Object} tokenAfterOpeningParen The token after it
+         * @returns {boolean} True if the opening paren is missing a required space
+         */
+        function openerMissingSpace(openingParenToken, tokenAfterOpeningParen) {
+            if (sourceCode.isSpaceBetweenTokens(openingParenToken, tokenAfterOpeningParen)) {
+                return false;
+            }
+
+            if (!options.empty && astUtils.isClosingParenToken(tokenAfterOpeningParen)) {
+                return false;
+            }
+
+            if (ALWAYS) {
+                return !isOpenerException(tokenAfterOpeningParen);
+            }
+            return isOpenerException(tokenAfterOpeningParen);
+        }
+
+        /**
+         * Determines if an opening paren is immediately followed by a disallowed space
+         * @param {Object} openingParenToken The paren token
+         * @param {Object} tokenAfterOpeningParen The token after it
+         * @returns {boolean} True if the opening paren has a disallowed space
+         */
+        function openerRejectsSpace(openingParenToken, tokenAfterOpeningParen) {
+            if (!astUtils.isTokenOnSameLine(openingParenToken, tokenAfterOpeningParen)) {
+                return false;
+            }
+
+            if (tokenAfterOpeningParen.type === "Line") {
+                return false;
+            }
+
+            if (!sourceCode.isSpaceBetweenTokens(openingParenToken, tokenAfterOpeningParen)) {
+                return false;
+            }
+
+            if (ALWAYS) {
+                return isOpenerException(tokenAfterOpeningParen);
+            }
+            return !isOpenerException(tokenAfterOpeningParen);
+        }
+
+        /**
+         * Determines if a closing paren is immediately preceded by a required space
+         * @param {Object} tokenBeforeClosingParen The token before the paren
+         * @param {Object} closingParenToken The paren token
+         * @returns {boolean} True if the closing paren is missing a required space
+         */
+        function closerMissingSpace(tokenBeforeClosingParen, closingParenToken) {
+            if (sourceCode.isSpaceBetweenTokens(tokenBeforeClosingParen, closingParenToken)) {
+                return false;
+            }
+
+            if (!options.empty && astUtils.isOpeningParenToken(tokenBeforeClosingParen)) {
+                return false;
+            }
+
+            if (ALWAYS) {
+                return !isCloserException(tokenBeforeClosingParen);
+            }
+            return isCloserException(tokenBeforeClosingParen);
+        }
+
+        /**
+         * Determines if a closer paren is immediately preceded by a disallowed space
+         * @param {Object} tokenBeforeClosingParen The token before the paren
+         * @param {Object} closingParenToken The paren token
+         * @returns {boolean} True if the closing paren has a disallowed space
+         */
+        function closerRejectsSpace(tokenBeforeClosingParen, closingParenToken) {
+            if (!astUtils.isTokenOnSameLine(tokenBeforeClosingParen, closingParenToken)) {
+                return false;
+            }
+
+            if (!sourceCode.isSpaceBetweenTokens(tokenBeforeClosingParen, closingParenToken)) {
+                return false;
+            }
+
+            if (ALWAYS) {
+                return isCloserException(tokenBeforeClosingParen);
+            }
+            return !isCloserException(tokenBeforeClosingParen);
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            Program: function checkParenSpaces(node) {
+                exceptions = getExceptions();
+                const tokens = sourceCode.tokensAndComments;
+
+                tokens.forEach((token, i) => {
+                    const prevToken = tokens[i - 1];
+                    const nextToken = tokens[i + 1];
+
+                    // if token is not an opening or closing paren token, do nothing
+                    if (!astUtils.isOpeningParenToken(token) && !astUtils.isClosingParenToken(token)) {
+                        return;
+                    }
+
+                    // if token is an opening paren and is not followed by a required space
+                    if (token.value === "(" && openerMissingSpace(token, nextToken)) {
+                        context.report({
+                            node,
+                            loc: token.loc,
+                            messageId: "missingOpeningSpace",
+                            fix(fixer) {
+                                return fixer.insertTextAfter(token, " ");
+                            }
+                        });
+                    }
+
+                    // if token is an opening paren and is followed by a disallowed space
+                    if (token.value === "(" && openerRejectsSpace(token, nextToken)) {
+                        context.report({
+                            node,
+                            loc: { start: token.loc.end, end: nextToken.loc.start },
+                            messageId: "rejectedOpeningSpace",
+                            fix(fixer) {
+                                return fixer.removeRange([token.range[1], nextToken.range[0]]);
+                            }
+                        });
+                    }
+
+                    // if token is a closing paren and is not preceded by a required space
+                    if (token.value === ")" && closerMissingSpace(prevToken, token)) {
+                        context.report({
+                            node,
+                            loc: token.loc,
+                            messageId: "missingClosingSpace",
+                            fix(fixer) {
+                                return fixer.insertTextBefore(token, " ");
+                            }
+                        });
+                    }
+
+                    // if token is a closing paren and is preceded by a disallowed space
+                    if (token.value === ")" && closerRejectsSpace(prevToken, token)) {
+                        context.report({
+                            node,
+                            loc: { start: prevToken.loc.end, end: token.loc.start },
+                            messageId: "rejectedClosingSpace",
+                            fix(fixer) {
+                                return fixer.removeRange([prevToken.range[1], token.range[0]]);
+                            }
+                        });
+                    }
+                });
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/space-infix-ops.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/space-infix-ops.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/space-infix-ops.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,198 @@
+/**
+ * @fileoverview Require spaces around infix operators
+ * @author Michael Ficarra
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+const { isEqToken } = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require spacing around infix operators",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/space-infix-ops"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    int32Hint: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            missingSpace: "Operator '{{operator}}' must be spaced."
+        }
+    },
+
+    create(context) {
+        const int32Hint = context.options[0] ? context.options[0].int32Hint === true : false;
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Returns the first token which violates the rule
+         * @param {ASTNode} left The left node of the main node
+         * @param {ASTNode} right The right node of the main node
+         * @param {string} op The operator of the main node
+         * @returns {Object} The violator token or null
+         * @private
+         */
+        function getFirstNonSpacedToken(left, right, op) {
+            const operator = sourceCode.getFirstTokenBetween(left, right, token => token.value === op);
+            const prev = sourceCode.getTokenBefore(operator);
+            const next = sourceCode.getTokenAfter(operator);
+
+            if (!sourceCode.isSpaceBetweenTokens(prev, operator) || !sourceCode.isSpaceBetweenTokens(operator, next)) {
+                return operator;
+            }
+
+            return null;
+        }
+
+        /**
+         * Reports an AST node as a rule violation
+         * @param {ASTNode} mainNode The node to report
+         * @param {Object} culpritToken The token which has a problem
+         * @returns {void}
+         * @private
+         */
+        function report(mainNode, culpritToken) {
+            context.report({
+                node: mainNode,
+                loc: culpritToken.loc,
+                messageId: "missingSpace",
+                data: {
+                    operator: culpritToken.value
+                },
+                fix(fixer) {
+                    const previousToken = sourceCode.getTokenBefore(culpritToken);
+                    const afterToken = sourceCode.getTokenAfter(culpritToken);
+                    let fixString = "";
+
+                    if (culpritToken.range[0] - previousToken.range[1] === 0) {
+                        fixString = " ";
+                    }
+
+                    fixString += culpritToken.value;
+
+                    if (afterToken.range[0] - culpritToken.range[1] === 0) {
+                        fixString += " ";
+                    }
+
+                    return fixer.replaceText(culpritToken, fixString);
+                }
+            });
+        }
+
+        /**
+         * Check if the node is binary then report
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkBinary(node) {
+            const leftNode = (node.left.typeAnnotation) ? node.left.typeAnnotation : node.left;
+            const rightNode = node.right;
+
+            // search for = in AssignmentPattern nodes
+            const operator = node.operator || "=";
+
+            const nonSpacedNode = getFirstNonSpacedToken(leftNode, rightNode, operator);
+
+            if (nonSpacedNode) {
+                if (!(int32Hint && sourceCode.getText(node).endsWith("|0"))) {
+                    report(node, nonSpacedNode);
+                }
+            }
+        }
+
+        /**
+         * Check if the node is conditional
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkConditional(node) {
+            const nonSpacedConsequentNode = getFirstNonSpacedToken(node.test, node.consequent, "?");
+            const nonSpacedAlternateNode = getFirstNonSpacedToken(node.consequent, node.alternate, ":");
+
+            if (nonSpacedConsequentNode) {
+                report(node, nonSpacedConsequentNode);
+            }
+
+            if (nonSpacedAlternateNode) {
+                report(node, nonSpacedAlternateNode);
+            }
+        }
+
+        /**
+         * Check if the node is a variable
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkVar(node) {
+            const leftNode = (node.id.typeAnnotation) ? node.id.typeAnnotation : node.id;
+            const rightNode = node.init;
+
+            if (rightNode) {
+                const nonSpacedNode = getFirstNonSpacedToken(leftNode, rightNode, "=");
+
+                if (nonSpacedNode) {
+                    report(node, nonSpacedNode);
+                }
+            }
+        }
+
+        return {
+            AssignmentExpression: checkBinary,
+            AssignmentPattern: checkBinary,
+            BinaryExpression: checkBinary,
+            LogicalExpression: checkBinary,
+            ConditionalExpression: checkConditional,
+            VariableDeclarator: checkVar,
+
+            PropertyDefinition(node) {
+                if (!node.value) {
+                    return;
+                }
+
+                /*
+                 * Because of computed properties and type annotations, some
+                 * tokens may exist between `node.key` and `=`.
+                 * Therefore, find the `=` from the right.
+                 */
+                const operatorToken = sourceCode.getTokenBefore(node.value, isEqToken);
+                const leftToken = sourceCode.getTokenBefore(operatorToken);
+                const rightToken = sourceCode.getTokenAfter(operatorToken);
+
+                if (
+                    !sourceCode.isSpaceBetweenTokens(leftToken, operatorToken) ||
+                    !sourceCode.isSpaceBetweenTokens(operatorToken, rightToken)
+                ) {
+                    report(node, operatorToken);
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/space-unary-ops.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/space-unary-ops.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/space-unary-ops.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,324 @@
+/**
+ * @fileoverview This rule should require or disallow spaces before or after unary operations.
+ * @author Marcin Kumorek
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce consistent spacing before or after unary operators",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/space-unary-ops"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    words: {
+                        type: "boolean",
+                        default: true
+                    },
+                    nonwords: {
+                        type: "boolean",
+                        default: false
+                    },
+                    overrides: {
+                        type: "object",
+                        additionalProperties: {
+                            type: "boolean"
+                        }
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            unexpectedBefore: "Unexpected space before unary operator '{{operator}}'.",
+            unexpectedAfter: "Unexpected space after unary operator '{{operator}}'.",
+            unexpectedAfterWord: "Unexpected space after unary word operator '{{word}}'.",
+            wordOperator: "Unary word operator '{{word}}' must be followed by whitespace.",
+            operator: "Unary operator '{{operator}}' must be followed by whitespace.",
+            beforeUnaryExpressions: "Space is required before unary expressions '{{token}}'."
+        }
+    },
+
+    create(context) {
+        const options = context.options[0] || { words: true, nonwords: false };
+
+        const sourceCode = context.sourceCode;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Check if the node is the first "!" in a "!!" convert to Boolean expression
+         * @param {ASTnode} node AST node
+         * @returns {boolean} Whether or not the node is first "!" in "!!"
+         */
+        function isFirstBangInBangBangExpression(node) {
+            return node && node.type === "UnaryExpression" && node.argument.operator === "!" &&
+                node.argument && node.argument.type === "UnaryExpression" && node.argument.operator === "!";
+        }
+
+        /**
+         * Checks if an override exists for a given operator.
+         * @param {string} operator Operator
+         * @returns {boolean} Whether or not an override has been provided for the operator
+         */
+        function overrideExistsForOperator(operator) {
+            return options.overrides && Object.prototype.hasOwnProperty.call(options.overrides, operator);
+        }
+
+        /**
+         * Gets the value that the override was set to for this operator
+         * @param {string} operator Operator
+         * @returns {boolean} Whether or not an override enforces a space with this operator
+         */
+        function overrideEnforcesSpaces(operator) {
+            return options.overrides[operator];
+        }
+
+        /**
+         * Verify Unary Word Operator has spaces after the word operator
+         * @param {ASTnode} node AST node
+         * @param {Object} firstToken first token from the AST node
+         * @param {Object} secondToken second token from the AST node
+         * @param {string} word The word to be used for reporting
+         * @returns {void}
+         */
+        function verifyWordHasSpaces(node, firstToken, secondToken, word) {
+            if (secondToken.range[0] === firstToken.range[1]) {
+                context.report({
+                    node,
+                    messageId: "wordOperator",
+                    data: {
+                        word
+                    },
+                    fix(fixer) {
+                        return fixer.insertTextAfter(firstToken, " ");
+                    }
+                });
+            }
+        }
+
+        /**
+         * Verify Unary Word Operator doesn't have spaces after the word operator
+         * @param {ASTnode} node AST node
+         * @param {Object} firstToken first token from the AST node
+         * @param {Object} secondToken second token from the AST node
+         * @param {string} word The word to be used for reporting
+         * @returns {void}
+         */
+        function verifyWordDoesntHaveSpaces(node, firstToken, secondToken, word) {
+            if (astUtils.canTokensBeAdjacent(firstToken, secondToken)) {
+                if (secondToken.range[0] > firstToken.range[1]) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedAfterWord",
+                        data: {
+                            word
+                        },
+                        fix(fixer) {
+                            return fixer.removeRange([firstToken.range[1], secondToken.range[0]]);
+                        }
+                    });
+                }
+            }
+        }
+
+        /**
+         * Check Unary Word Operators for spaces after the word operator
+         * @param {ASTnode} node AST node
+         * @param {Object} firstToken first token from the AST node
+         * @param {Object} secondToken second token from the AST node
+         * @param {string} word The word to be used for reporting
+         * @returns {void}
+         */
+        function checkUnaryWordOperatorForSpaces(node, firstToken, secondToken, word) {
+            if (overrideExistsForOperator(word)) {
+                if (overrideEnforcesSpaces(word)) {
+                    verifyWordHasSpaces(node, firstToken, secondToken, word);
+                } else {
+                    verifyWordDoesntHaveSpaces(node, firstToken, secondToken, word);
+                }
+            } else if (options.words) {
+                verifyWordHasSpaces(node, firstToken, secondToken, word);
+            } else {
+                verifyWordDoesntHaveSpaces(node, firstToken, secondToken, word);
+            }
+        }
+
+        /**
+         * Verifies YieldExpressions satisfy spacing requirements
+         * @param {ASTnode} node AST node
+         * @returns {void}
+         */
+        function checkForSpacesAfterYield(node) {
+            const tokens = sourceCode.getFirstTokens(node, 3),
+                word = "yield";
+
+            if (!node.argument || node.delegate) {
+                return;
+            }
+
+            checkUnaryWordOperatorForSpaces(node, tokens[0], tokens[1], word);
+        }
+
+        /**
+         * Verifies AwaitExpressions satisfy spacing requirements
+         * @param {ASTNode} node AwaitExpression AST node
+         * @returns {void}
+         */
+        function checkForSpacesAfterAwait(node) {
+            const tokens = sourceCode.getFirstTokens(node, 3);
+
+            checkUnaryWordOperatorForSpaces(node, tokens[0], tokens[1], "await");
+        }
+
+        /**
+         * Verifies UnaryExpression, UpdateExpression and NewExpression have spaces before or after the operator
+         * @param {ASTnode} node AST node
+         * @param {Object} firstToken First token in the expression
+         * @param {Object} secondToken Second token in the expression
+         * @returns {void}
+         */
+        function verifyNonWordsHaveSpaces(node, firstToken, secondToken) {
+            if (node.prefix) {
+                if (isFirstBangInBangBangExpression(node)) {
+                    return;
+                }
+                if (firstToken.range[1] === secondToken.range[0]) {
+                    context.report({
+                        node,
+                        messageId: "operator",
+                        data: {
+                            operator: firstToken.value
+                        },
+                        fix(fixer) {
+                            return fixer.insertTextAfter(firstToken, " ");
+                        }
+                    });
+                }
+            } else {
+                if (firstToken.range[1] === secondToken.range[0]) {
+                    context.report({
+                        node,
+                        messageId: "beforeUnaryExpressions",
+                        data: {
+                            token: secondToken.value
+                        },
+                        fix(fixer) {
+                            return fixer.insertTextBefore(secondToken, " ");
+                        }
+                    });
+                }
+            }
+        }
+
+        /**
+         * Verifies UnaryExpression, UpdateExpression and NewExpression don't have spaces before or after the operator
+         * @param {ASTnode} node AST node
+         * @param {Object} firstToken First token in the expression
+         * @param {Object} secondToken Second token in the expression
+         * @returns {void}
+         */
+        function verifyNonWordsDontHaveSpaces(node, firstToken, secondToken) {
+            if (node.prefix) {
+                if (secondToken.range[0] > firstToken.range[1]) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedAfter",
+                        data: {
+                            operator: firstToken.value
+                        },
+                        fix(fixer) {
+                            if (astUtils.canTokensBeAdjacent(firstToken, secondToken)) {
+                                return fixer.removeRange([firstToken.range[1], secondToken.range[0]]);
+                            }
+                            return null;
+                        }
+                    });
+                }
+            } else {
+                if (secondToken.range[0] > firstToken.range[1]) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedBefore",
+                        data: {
+                            operator: secondToken.value
+                        },
+                        fix(fixer) {
+                            return fixer.removeRange([firstToken.range[1], secondToken.range[0]]);
+                        }
+                    });
+                }
+            }
+        }
+
+        /**
+         * Verifies UnaryExpression, UpdateExpression and NewExpression satisfy spacing requirements
+         * @param {ASTnode} node AST node
+         * @returns {void}
+         */
+        function checkForSpaces(node) {
+            const tokens = node.type === "UpdateExpression" && !node.prefix
+                ? sourceCode.getLastTokens(node, 2)
+                : sourceCode.getFirstTokens(node, 2);
+            const firstToken = tokens[0];
+            const secondToken = tokens[1];
+
+            if ((node.type === "NewExpression" || node.prefix) && firstToken.type === "Keyword") {
+                checkUnaryWordOperatorForSpaces(node, firstToken, secondToken, firstToken.value);
+                return;
+            }
+
+            const operator = node.prefix ? tokens[0].value : tokens[1].value;
+
+            if (overrideExistsForOperator(operator)) {
+                if (overrideEnforcesSpaces(operator)) {
+                    verifyNonWordsHaveSpaces(node, firstToken, secondToken);
+                } else {
+                    verifyNonWordsDontHaveSpaces(node, firstToken, secondToken);
+                }
+            } else if (options.nonwords) {
+                verifyNonWordsHaveSpaces(node, firstToken, secondToken);
+            } else {
+                verifyNonWordsDontHaveSpaces(node, firstToken, secondToken);
+            }
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            UnaryExpression: checkForSpaces,
+            UpdateExpression: checkForSpaces,
+            NewExpression: checkForSpaces,
+            YieldExpression: checkForSpacesAfterYield,
+            AwaitExpression: checkForSpacesAfterAwait
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/spaced-comment.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/spaced-comment.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/spaced-comment.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,385 @@
+/**
+ * @fileoverview Source code for spaced-comments rule
+ * @author Gyandeep Singh
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+const escapeRegExp = require("escape-string-regexp");
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Escapes the control characters of a given string.
+ * @param {string} s A string to escape.
+ * @returns {string} An escaped string.
+ */
+function escape(s) {
+    return `(?:${escapeRegExp(s)})`;
+}
+
+/**
+ * Escapes the control characters of a given string.
+ * And adds a repeat flag.
+ * @param {string} s A string to escape.
+ * @returns {string} An escaped string.
+ */
+function escapeAndRepeat(s) {
+    return `${escape(s)}+`;
+}
+
+/**
+ * Parses `markers` option.
+ * If markers don't include `"*"`, this adds `"*"` to allow JSDoc comments.
+ * @param {string[]} [markers] A marker list.
+ * @returns {string[]} A marker list.
+ */
+function parseMarkersOption(markers) {
+
+    // `*` is a marker for JSDoc comments.
+    if (!markers.includes("*")) {
+        return markers.concat("*");
+    }
+
+    return markers;
+}
+
+/**
+ * Creates string pattern for exceptions.
+ * Generated pattern:
+ *
+ * 1. A space or an exception pattern sequence.
+ * @param {string[]} exceptions An exception pattern list.
+ * @returns {string} A regular expression string for exceptions.
+ */
+function createExceptionsPattern(exceptions) {
+    let pattern = "";
+
+    /*
+     * A space or an exception pattern sequence.
+     * []                 ==> "\s"
+     * ["-"]              ==> "(?:\s|\-+$)"
+     * ["-", "="]         ==> "(?:\s|(?:\-+|=+)$)"
+     * ["-", "=", "--=="] ==> "(?:\s|(?:\-+|=+|(?:\-\-==)+)$)" ==> https://jex.im/regulex/#!embed=false&flags=&re=(%3F%3A%5Cs%7C(%3F%3A%5C-%2B%7C%3D%2B%7C(%3F%3A%5C-%5C-%3D%3D)%2B)%24)
+     */
+    if (exceptions.length === 0) {
+
+        // a space.
+        pattern += "\\s";
+    } else {
+
+        // a space or...
+        pattern += "(?:\\s|";
+
+        if (exceptions.length === 1) {
+
+            // a sequence of the exception pattern.
+            pattern += escapeAndRepeat(exceptions[0]);
+        } else {
+
+            // a sequence of one of the exception patterns.
+            pattern += "(?:";
+            pattern += exceptions.map(escapeAndRepeat).join("|");
+            pattern += ")";
+        }
+        pattern += `(?:$|[${Array.from(astUtils.LINEBREAKS).join("")}]))`;
+    }
+
+    return pattern;
+}
+
+/**
+ * Creates RegExp object for `always` mode.
+ * Generated pattern for beginning of comment:
+ *
+ * 1. First, a marker or nothing.
+ * 2. Next, a space or an exception pattern sequence.
+ * @param {string[]} markers A marker list.
+ * @param {string[]} exceptions An exception pattern list.
+ * @returns {RegExp} A RegExp object for the beginning of a comment in `always` mode.
+ */
+function createAlwaysStylePattern(markers, exceptions) {
+    let pattern = "^";
+
+    /*
+     * A marker or nothing.
+     * ["*"]            ==> "\*?"
+     * ["*", "!"]       ==> "(?:\*|!)?"
+     * ["*", "/", "!<"] ==> "(?:\*|\/|(?:!<))?" ==> https://jex.im/regulex/#!embed=false&flags=&re=(%3F%3A%5C*%7C%5C%2F%7C(%3F%3A!%3C))%3F
+     */
+    if (markers.length === 1) {
+
+        // the marker.
+        pattern += escape(markers[0]);
+    } else {
+
+        // one of markers.
+        pattern += "(?:";
+        pattern += markers.map(escape).join("|");
+        pattern += ")";
+    }
+
+    pattern += "?"; // or nothing.
+    pattern += createExceptionsPattern(exceptions);
+
+    return new RegExp(pattern, "u");
+}
+
+/**
+ * Creates RegExp object for `never` mode.
+ * Generated pattern for beginning of comment:
+ *
+ * 1. First, a marker or nothing (captured).
+ * 2. Next, a space or a tab.
+ * @param {string[]} markers A marker list.
+ * @returns {RegExp} A RegExp object for `never` mode.
+ */
+function createNeverStylePattern(markers) {
+    const pattern = `^(${markers.map(escape).join("|")})?[ \t]+`;
+
+    return new RegExp(pattern, "u");
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce consistent spacing after the `//` or `/*` in a comment",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/spaced-comment"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            },
+            {
+                type: "object",
+                properties: {
+                    exceptions: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        }
+                    },
+                    markers: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        }
+                    },
+                    line: {
+                        type: "object",
+                        properties: {
+                            exceptions: {
+                                type: "array",
+                                items: {
+                                    type: "string"
+                                }
+                            },
+                            markers: {
+                                type: "array",
+                                items: {
+                                    type: "string"
+                                }
+                            }
+                        },
+                        additionalProperties: false
+                    },
+                    block: {
+                        type: "object",
+                        properties: {
+                            exceptions: {
+                                type: "array",
+                                items: {
+                                    type: "string"
+                                }
+                            },
+                            markers: {
+                                type: "array",
+                                items: {
+                                    type: "string"
+                                }
+                            },
+                            balanced: {
+                                type: "boolean",
+                                default: false
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            unexpectedSpaceAfterMarker: "Unexpected space or tab after marker ({{refChar}}) in comment.",
+            expectedExceptionAfter: "Expected exception block, space or tab after '{{refChar}}' in comment.",
+            unexpectedSpaceBefore: "Unexpected space or tab before '*/' in comment.",
+            unexpectedSpaceAfter: "Unexpected space or tab after '{{refChar}}' in comment.",
+            expectedSpaceBefore: "Expected space or tab before '*/' in comment.",
+            expectedSpaceAfter: "Expected space or tab after '{{refChar}}' in comment."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        // Unless the first option is never, require a space
+        const requireSpace = context.options[0] !== "never";
+
+        /*
+         * Parse the second options.
+         * If markers don't include `"*"`, it's added automatically for JSDoc
+         * comments.
+         */
+        const config = context.options[1] || {};
+        const balanced = config.block && config.block.balanced;
+
+        const styleRules = ["block", "line"].reduce((rule, type) => {
+            const markers = parseMarkersOption(config[type] && config[type].markers || config.markers || []);
+            const exceptions = config[type] && config[type].exceptions || config.exceptions || [];
+            const endNeverPattern = "[ \t]+$";
+
+            // Create RegExp object for valid patterns.
+            rule[type] = {
+                beginRegex: requireSpace ? createAlwaysStylePattern(markers, exceptions) : createNeverStylePattern(markers),
+                endRegex: balanced && requireSpace ? new RegExp(`${createExceptionsPattern(exceptions)}$`, "u") : new RegExp(endNeverPattern, "u"),
+                hasExceptions: exceptions.length > 0,
+                captureMarker: new RegExp(`^(${markers.map(escape).join("|")})`, "u"),
+                markers: new Set(markers)
+            };
+
+            return rule;
+        }, {});
+
+        /**
+         * Reports a beginning spacing error with an appropriate message.
+         * @param {ASTNode} node A comment node to check.
+         * @param {string} messageId An error message to report.
+         * @param {Array} match An array of match results for markers.
+         * @param {string} refChar Character used for reference in the error message.
+         * @returns {void}
+         */
+        function reportBegin(node, messageId, match, refChar) {
+            const type = node.type.toLowerCase(),
+                commentIdentifier = type === "block" ? "/*" : "//";
+
+            context.report({
+                node,
+                fix(fixer) {
+                    const start = node.range[0];
+                    let end = start + 2;
+
+                    if (requireSpace) {
+                        if (match) {
+                            end += match[0].length;
+                        }
+                        return fixer.insertTextAfterRange([start, end], " ");
+                    }
+                    end += match[0].length;
+                    return fixer.replaceTextRange([start, end], commentIdentifier + (match[1] ? match[1] : ""));
+
+                },
+                messageId,
+                data: { refChar }
+            });
+        }
+
+        /**
+         * Reports an ending spacing error with an appropriate message.
+         * @param {ASTNode} node A comment node to check.
+         * @param {string} messageId An error message to report.
+         * @param {string} match An array of the matched whitespace characters.
+         * @returns {void}
+         */
+        function reportEnd(node, messageId, match) {
+            context.report({
+                node,
+                fix(fixer) {
+                    if (requireSpace) {
+                        return fixer.insertTextAfterRange([node.range[0], node.range[1] - 2], " ");
+                    }
+                    const end = node.range[1] - 2,
+                        start = end - match[0].length;
+
+                    return fixer.replaceTextRange([start, end], "");
+
+                },
+                messageId
+            });
+        }
+
+        /**
+         * Reports a given comment if it's invalid.
+         * @param {ASTNode} node a comment node to check.
+         * @returns {void}
+         */
+        function checkCommentForSpace(node) {
+            const type = node.type.toLowerCase(),
+                rule = styleRules[type],
+                commentIdentifier = type === "block" ? "/*" : "//";
+
+            // Ignores empty comments and comments that consist only of a marker.
+            if (node.value.length === 0 || rule.markers.has(node.value)) {
+                return;
+            }
+
+            const beginMatch = rule.beginRegex.exec(node.value);
+            const endMatch = rule.endRegex.exec(node.value);
+
+            // Checks.
+            if (requireSpace) {
+                if (!beginMatch) {
+                    const hasMarker = rule.captureMarker.exec(node.value);
+                    const marker = hasMarker ? commentIdentifier + hasMarker[0] : commentIdentifier;
+
+                    if (rule.hasExceptions) {
+                        reportBegin(node, "expectedExceptionAfter", hasMarker, marker);
+                    } else {
+                        reportBegin(node, "expectedSpaceAfter", hasMarker, marker);
+                    }
+                }
+
+                if (balanced && type === "block" && !endMatch) {
+                    reportEnd(node, "expectedSpaceBefore");
+                }
+            } else {
+                if (beginMatch) {
+                    if (!beginMatch[1]) {
+                        reportBegin(node, "unexpectedSpaceAfter", beginMatch, commentIdentifier);
+                    } else {
+                        reportBegin(node, "unexpectedSpaceAfterMarker", beginMatch, beginMatch[1]);
+                    }
+                }
+
+                if (balanced && type === "block" && endMatch) {
+                    reportEnd(node, "unexpectedSpaceBefore", endMatch);
+                }
+            }
+        }
+
+        return {
+            Program() {
+                const comments = sourceCode.getAllComments();
+
+                comments.filter(token => token.type !== "Shebang").forEach(checkCommentForSpace);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/strict.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/strict.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/strict.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,277 @@
+/**
+ * @fileoverview Rule to control usage of strict mode directives.
+ * @author Brandon Mills
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Gets all of the Use Strict Directives in the Directive Prologue of a group of
+ * statements.
+ * @param {ASTNode[]} statements Statements in the program or function body.
+ * @returns {ASTNode[]} All of the Use Strict Directives.
+ */
+function getUseStrictDirectives(statements) {
+    const directives = [];
+
+    for (let i = 0; i < statements.length; i++) {
+        const statement = statements[i];
+
+        if (
+            statement.type === "ExpressionStatement" &&
+            statement.expression.type === "Literal" &&
+            statement.expression.value === "use strict"
+        ) {
+            directives[i] = statement;
+        } else {
+            break;
+        }
+    }
+
+    return directives;
+}
+
+/**
+ * Checks whether a given parameter is a simple parameter.
+ * @param {ASTNode} node A pattern node to check.
+ * @returns {boolean} `true` if the node is an Identifier node.
+ */
+function isSimpleParameter(node) {
+    return node.type === "Identifier";
+}
+
+/**
+ * Checks whether a given parameter list is a simple parameter list.
+ * @param {ASTNode[]} params A parameter list to check.
+ * @returns {boolean} `true` if the every parameter is an Identifier node.
+ */
+function isSimpleParameterList(params) {
+    return params.every(isSimpleParameter);
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require or disallow strict mode directives",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/strict"
+        },
+
+        schema: [
+            {
+                enum: ["never", "global", "function", "safe"]
+            }
+        ],
+
+        fixable: "code",
+        messages: {
+            function: "Use the function form of 'use strict'.",
+            global: "Use the global form of 'use strict'.",
+            multiple: "Multiple 'use strict' directives.",
+            never: "Strict mode is not permitted.",
+            unnecessary: "Unnecessary 'use strict' directive.",
+            module: "'use strict' is unnecessary inside of modules.",
+            implied: "'use strict' is unnecessary when implied strict mode is enabled.",
+            unnecessaryInClasses: "'use strict' is unnecessary inside of classes.",
+            nonSimpleParameterList: "'use strict' directive inside a function with non-simple parameter list throws a syntax error since ES2016.",
+            wrap: "Wrap {{name}} in a function with 'use strict' directive."
+        }
+    },
+
+    create(context) {
+
+        const ecmaFeatures = context.parserOptions.ecmaFeatures || {},
+            scopes = [],
+            classScopes = [];
+        let mode = context.options[0] || "safe";
+
+        if (ecmaFeatures.impliedStrict) {
+            mode = "implied";
+        } else if (mode === "safe") {
+            mode = ecmaFeatures.globalReturn || context.languageOptions.sourceType === "commonjs" ? "global" : "function";
+        }
+
+        /**
+         * Determines whether a reported error should be fixed, depending on the error type.
+         * @param {string} errorType The type of error
+         * @returns {boolean} `true` if the reported error should be fixed
+         */
+        function shouldFix(errorType) {
+            return errorType === "multiple" || errorType === "unnecessary" || errorType === "module" || errorType === "implied" || errorType === "unnecessaryInClasses";
+        }
+
+        /**
+         * Gets a fixer function to remove a given 'use strict' directive.
+         * @param {ASTNode} node The directive that should be removed
+         * @returns {Function} A fixer function
+         */
+        function getFixFunction(node) {
+            return fixer => fixer.remove(node);
+        }
+
+        /**
+         * Report a slice of an array of nodes with a given message.
+         * @param {ASTNode[]} nodes Nodes.
+         * @param {string} start Index to start from.
+         * @param {string} end Index to end before.
+         * @param {string} messageId Message to display.
+         * @param {boolean} fix `true` if the directive should be fixed (i.e. removed)
+         * @returns {void}
+         */
+        function reportSlice(nodes, start, end, messageId, fix) {
+            nodes.slice(start, end).forEach(node => {
+                context.report({ node, messageId, fix: fix ? getFixFunction(node) : null });
+            });
+        }
+
+        /**
+         * Report all nodes in an array with a given message.
+         * @param {ASTNode[]} nodes Nodes.
+         * @param {string} messageId Message id to display.
+         * @param {boolean} fix `true` if the directive should be fixed (i.e. removed)
+         * @returns {void}
+         */
+        function reportAll(nodes, messageId, fix) {
+            reportSlice(nodes, 0, nodes.length, messageId, fix);
+        }
+
+        /**
+         * Report all nodes in an array, except the first, with a given message.
+         * @param {ASTNode[]} nodes Nodes.
+         * @param {string} messageId Message id to display.
+         * @param {boolean} fix `true` if the directive should be fixed (i.e. removed)
+         * @returns {void}
+         */
+        function reportAllExceptFirst(nodes, messageId, fix) {
+            reportSlice(nodes, 1, nodes.length, messageId, fix);
+        }
+
+        /**
+         * Entering a function in 'function' mode pushes a new nested scope onto the
+         * stack. The new scope is true if the nested function is strict mode code.
+         * @param {ASTNode} node The function declaration or expression.
+         * @param {ASTNode[]} useStrictDirectives The Use Strict Directives of the node.
+         * @returns {void}
+         */
+        function enterFunctionInFunctionMode(node, useStrictDirectives) {
+            const isInClass = classScopes.length > 0,
+                isParentGlobal = scopes.length === 0 && classScopes.length === 0,
+                isParentStrict = scopes.length > 0 && scopes[scopes.length - 1],
+                isStrict = useStrictDirectives.length > 0;
+
+            if (isStrict) {
+                if (!isSimpleParameterList(node.params)) {
+                    context.report({ node: useStrictDirectives[0], messageId: "nonSimpleParameterList" });
+                } else if (isParentStrict) {
+                    context.report({ node: useStrictDirectives[0], messageId: "unnecessary", fix: getFixFunction(useStrictDirectives[0]) });
+                } else if (isInClass) {
+                    context.report({ node: useStrictDirectives[0], messageId: "unnecessaryInClasses", fix: getFixFunction(useStrictDirectives[0]) });
+                }
+
+                reportAllExceptFirst(useStrictDirectives, "multiple", true);
+            } else if (isParentGlobal) {
+                if (isSimpleParameterList(node.params)) {
+                    context.report({ node, messageId: "function" });
+                } else {
+                    context.report({
+                        node,
+                        messageId: "wrap",
+                        data: { name: astUtils.getFunctionNameWithKind(node) }
+                    });
+                }
+            }
+
+            scopes.push(isParentStrict || isStrict);
+        }
+
+        /**
+         * Exiting a function in 'function' mode pops its scope off the stack.
+         * @returns {void}
+         */
+        function exitFunctionInFunctionMode() {
+            scopes.pop();
+        }
+
+        /**
+         * Enter a function and either:
+         * - Push a new nested scope onto the stack (in 'function' mode).
+         * - Report all the Use Strict Directives (in the other modes).
+         * @param {ASTNode} node The function declaration or expression.
+         * @returns {void}
+         */
+        function enterFunction(node) {
+            const isBlock = node.body.type === "BlockStatement",
+                useStrictDirectives = isBlock
+                    ? getUseStrictDirectives(node.body.body) : [];
+
+            if (mode === "function") {
+                enterFunctionInFunctionMode(node, useStrictDirectives);
+            } else if (useStrictDirectives.length > 0) {
+                if (isSimpleParameterList(node.params)) {
+                    reportAll(useStrictDirectives, mode, shouldFix(mode));
+                } else {
+                    context.report({ node: useStrictDirectives[0], messageId: "nonSimpleParameterList" });
+                    reportAllExceptFirst(useStrictDirectives, "multiple", true);
+                }
+            }
+        }
+
+        const rule = {
+            Program(node) {
+                const useStrictDirectives = getUseStrictDirectives(node.body);
+
+                if (node.sourceType === "module") {
+                    mode = "module";
+                }
+
+                if (mode === "global") {
+                    if (node.body.length > 0 && useStrictDirectives.length === 0) {
+                        context.report({ node, messageId: "global" });
+                    }
+                    reportAllExceptFirst(useStrictDirectives, "multiple", true);
+                } else {
+                    reportAll(useStrictDirectives, mode, shouldFix(mode));
+                }
+            },
+            FunctionDeclaration: enterFunction,
+            FunctionExpression: enterFunction,
+            ArrowFunctionExpression: enterFunction
+        };
+
+        if (mode === "function") {
+            Object.assign(rule, {
+
+                // Inside of class bodies are always strict mode.
+                ClassBody() {
+                    classScopes.push(true);
+                },
+                "ClassBody:exit"() {
+                    classScopes.pop();
+                },
+
+                "FunctionDeclaration:exit": exitFunctionInFunctionMode,
+                "FunctionExpression:exit": exitFunctionInFunctionMode,
+                "ArrowFunctionExpression:exit": exitFunctionInFunctionMode
+            });
+        }
+
+        return rule;
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/switch-colon-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/switch-colon-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/switch-colon-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,132 @@
+/**
+ * @fileoverview Rule to enforce spacing around colons of switch statements.
+ * @author Toru Nagashima
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Enforce spacing around colons of switch statements",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/switch-colon-spacing"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    before: { type: "boolean", default: false },
+                    after: { type: "boolean", default: true }
+                },
+                additionalProperties: false
+            }
+        ],
+        fixable: "whitespace",
+        messages: {
+            expectedBefore: "Expected space(s) before this colon.",
+            expectedAfter: "Expected space(s) after this colon.",
+            unexpectedBefore: "Unexpected space(s) before this colon.",
+            unexpectedAfter: "Unexpected space(s) after this colon."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const options = context.options[0] || {};
+        const beforeSpacing = options.before === true; // false by default
+        const afterSpacing = options.after !== false; // true by default
+
+        /**
+         * Check whether the spacing between the given 2 tokens is valid or not.
+         * @param {Token} left The left token to check.
+         * @param {Token} right The right token to check.
+         * @param {boolean} expected The expected spacing to check. `true` if there should be a space.
+         * @returns {boolean} `true` if the spacing between the tokens is valid.
+         */
+        function isValidSpacing(left, right, expected) {
+            return (
+                astUtils.isClosingBraceToken(right) ||
+                !astUtils.isTokenOnSameLine(left, right) ||
+                sourceCode.isSpaceBetweenTokens(left, right) === expected
+            );
+        }
+
+        /**
+         * Check whether comments exist between the given 2 tokens.
+         * @param {Token} left The left token to check.
+         * @param {Token} right The right token to check.
+         * @returns {boolean} `true` if comments exist between the given 2 tokens.
+         */
+        function commentsExistBetween(left, right) {
+            return sourceCode.getFirstTokenBetween(
+                left,
+                right,
+                {
+                    includeComments: true,
+                    filter: astUtils.isCommentToken
+                }
+            ) !== null;
+        }
+
+        /**
+         * Fix the spacing between the given 2 tokens.
+         * @param {RuleFixer} fixer The fixer to fix.
+         * @param {Token} left The left token of fix range.
+         * @param {Token} right The right token of fix range.
+         * @param {boolean} spacing The spacing style. `true` if there should be a space.
+         * @returns {Fix|null} The fix object.
+         */
+        function fix(fixer, left, right, spacing) {
+            if (commentsExistBetween(left, right)) {
+                return null;
+            }
+            if (spacing) {
+                return fixer.insertTextAfter(left, " ");
+            }
+            return fixer.removeRange([left.range[1], right.range[0]]);
+        }
+
+        return {
+            SwitchCase(node) {
+                const colonToken = astUtils.getSwitchCaseColonToken(node, sourceCode);
+                const beforeToken = sourceCode.getTokenBefore(colonToken);
+                const afterToken = sourceCode.getTokenAfter(colonToken);
+
+                if (!isValidSpacing(beforeToken, colonToken, beforeSpacing)) {
+                    context.report({
+                        node,
+                        loc: colonToken.loc,
+                        messageId: beforeSpacing ? "expectedBefore" : "unexpectedBefore",
+                        fix: fixer => fix(fixer, beforeToken, colonToken, beforeSpacing)
+                    });
+                }
+                if (!isValidSpacing(colonToken, afterToken, afterSpacing)) {
+                    context.report({
+                        node,
+                        loc: colonToken.loc,
+                        messageId: afterSpacing ? "expectedAfter" : "unexpectedAfter",
+                        fix: fixer => fix(fixer, colonToken, afterToken, afterSpacing)
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/symbol-description.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/symbol-description.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/symbol-description.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,73 @@
+/**
+ * @fileoverview Rule to enforce description with the `Symbol` object
+ * @author Jarek Rencz
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require symbol descriptions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/symbol-description"
+        },
+        fixable: null,
+        schema: [],
+        messages: {
+            expected: "Expected Symbol to have a description."
+        }
+    },
+
+    create(context) {
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Reports if node does not conform the rule in case rule is set to
+         * report missing description
+         * @param {ASTNode} node A CallExpression node to check.
+         * @returns {void}
+         */
+        function checkArgument(node) {
+            if (node.arguments.length === 0) {
+                context.report({
+                    node,
+                    messageId: "expected"
+                });
+            }
+        }
+
+        return {
+            "Program:exit"(node) {
+                const scope = sourceCode.getScope(node);
+                const variable = astUtils.getVariableByName(scope, "Symbol");
+
+                if (variable && variable.defs.length === 0) {
+                    variable.references.forEach(reference => {
+                        const idNode = reference.identifier;
+
+                        if (astUtils.isCallee(idNode)) {
+                            checkArgument(idNode.parent);
+                        }
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/template-curly-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/template-curly-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/template-curly-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,144 @@
+/**
+ * @fileoverview Rule to enforce spacing around embedded expressions of template strings
+ * @author Toru Nagashima
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require or disallow spacing around embedded expressions of template strings",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/template-curly-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            { enum: ["always", "never"] }
+        ],
+        messages: {
+            expectedBefore: "Expected space(s) before '}'.",
+            expectedAfter: "Expected space(s) after '${'.",
+            unexpectedBefore: "Unexpected space(s) before '}'.",
+            unexpectedAfter: "Unexpected space(s) after '${'."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+        const always = context.options[0] === "always";
+
+        /**
+         * Checks spacing before `}` of a given token.
+         * @param {Token} token A token to check. This is a Template token.
+         * @returns {void}
+         */
+        function checkSpacingBefore(token) {
+            if (!token.value.startsWith("}")) {
+                return; // starts with a backtick, this is the first template element in the template literal
+            }
+
+            const prevToken = sourceCode.getTokenBefore(token, { includeComments: true }),
+                hasSpace = sourceCode.isSpaceBetween(prevToken, token);
+
+            if (!astUtils.isTokenOnSameLine(prevToken, token)) {
+                return;
+            }
+
+            if (always && !hasSpace) {
+                context.report({
+                    loc: {
+                        start: token.loc.start,
+                        end: {
+                            line: token.loc.start.line,
+                            column: token.loc.start.column + 1
+                        }
+                    },
+                    messageId: "expectedBefore",
+                    fix: fixer => fixer.insertTextBefore(token, " ")
+                });
+            }
+
+            if (!always && hasSpace) {
+                context.report({
+                    loc: {
+                        start: prevToken.loc.end,
+                        end: token.loc.start
+                    },
+                    messageId: "unexpectedBefore",
+                    fix: fixer => fixer.removeRange([prevToken.range[1], token.range[0]])
+                });
+            }
+        }
+
+        /**
+         * Checks spacing after `${` of a given token.
+         * @param {Token} token A token to check. This is a Template token.
+         * @returns {void}
+         */
+        function checkSpacingAfter(token) {
+            if (!token.value.endsWith("${")) {
+                return; // ends with a backtick, this is the last template element in the template literal
+            }
+
+            const nextToken = sourceCode.getTokenAfter(token, { includeComments: true }),
+                hasSpace = sourceCode.isSpaceBetween(token, nextToken);
+
+            if (!astUtils.isTokenOnSameLine(token, nextToken)) {
+                return;
+            }
+
+            if (always && !hasSpace) {
+                context.report({
+                    loc: {
+                        start: {
+                            line: token.loc.end.line,
+                            column: token.loc.end.column - 2
+                        },
+                        end: token.loc.end
+                    },
+                    messageId: "expectedAfter",
+                    fix: fixer => fixer.insertTextAfter(token, " ")
+                });
+            }
+
+            if (!always && hasSpace) {
+                context.report({
+                    loc: {
+                        start: token.loc.end,
+                        end: nextToken.loc.start
+                    },
+                    messageId: "unexpectedAfter",
+                    fix: fixer => fixer.removeRange([token.range[1], nextToken.range[0]])
+                });
+            }
+        }
+
+        return {
+            TemplateElement(node) {
+                const token = sourceCode.getFirstToken(node);
+
+                checkSpacingBefore(token);
+                checkSpacingAfter(token);
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/template-tag-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/template-tag-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/template-tag-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,93 @@
+/**
+ * @fileoverview Rule to check spacing between template tags and their literals
+ * @author Jonathan Wilsson
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require or disallow spacing between template tags and their literals",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/template-tag-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            { enum: ["always", "never"] }
+        ],
+        messages: {
+            unexpected: "Unexpected space between template tag and template literal.",
+            missing: "Missing space between template tag and template literal."
+        }
+    },
+
+    create(context) {
+        const never = context.options[0] !== "always";
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Check if a space is present between a template tag and its literal
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkSpacing(node) {
+            const tagToken = sourceCode.getTokenBefore(node.quasi);
+            const literalToken = sourceCode.getFirstToken(node.quasi);
+            const hasWhitespace = sourceCode.isSpaceBetweenTokens(tagToken, literalToken);
+
+            if (never && hasWhitespace) {
+                context.report({
+                    node,
+                    loc: {
+                        start: tagToken.loc.end,
+                        end: literalToken.loc.start
+                    },
+                    messageId: "unexpected",
+                    fix(fixer) {
+                        const comments = sourceCode.getCommentsBefore(node.quasi);
+
+                        // Don't fix anything if there's a single line comment after the template tag
+                        if (comments.some(comment => comment.type === "Line")) {
+                            return null;
+                        }
+
+                        return fixer.replaceTextRange(
+                            [tagToken.range[1], literalToken.range[0]],
+                            comments.reduce((text, comment) => text + sourceCode.getText(comment), "")
+                        );
+                    }
+                });
+            } else if (!never && !hasWhitespace) {
+                context.report({
+                    node,
+                    loc: {
+                        start: node.loc.start,
+                        end: literalToken.loc.start
+                    },
+                    messageId: "missing",
+                    fix(fixer) {
+                        return fixer.insertTextAfter(tagToken, " ");
+                    }
+                });
+            }
+        }
+
+        return {
+            TaggedTemplateExpression: checkSpacing
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/unicode-bom.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/unicode-bom.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/unicode-bom.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,73 @@
+/**
+ * @fileoverview Require or disallow Unicode BOM
+ * @author Andrew Johnston <https://github.com/ehjay>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "layout",
+
+        docs: {
+            description: "Require or disallow Unicode byte order mark (BOM)",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/unicode-bom"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            }
+        ],
+        messages: {
+            expected: "Expected Unicode BOM (Byte Order Mark).",
+            unexpected: "Unexpected Unicode BOM (Byte Order Mark)."
+        }
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+
+            Program: function checkUnicodeBOM(node) {
+
+                const sourceCode = context.sourceCode,
+                    location = { column: 0, line: 1 },
+                    requireBOM = context.options[0] || "never";
+
+                if (!sourceCode.hasBOM && (requireBOM === "always")) {
+                    context.report({
+                        node,
+                        loc: location,
+                        messageId: "expected",
+                        fix(fixer) {
+                            return fixer.insertTextBeforeRange([0, 1], "\uFEFF");
+                        }
+                    });
+                } else if (sourceCode.hasBOM && (requireBOM === "never")) {
+                    context.report({
+                        node,
+                        loc: location,
+                        messageId: "unexpected",
+                        fix(fixer) {
+                            return fixer.removeRange([-1, 0]);
+                        }
+                    });
+                }
+            }
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/use-isnan.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/use-isnan.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/use-isnan.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,141 @@
+/**
+ * @fileoverview Rule to flag comparisons to the value NaN
+ * @author James Allardice
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines if the given node is a NaN `Identifier` node.
+ * @param {ASTNode|null} node The node to check.
+ * @returns {boolean} `true` if the node is 'NaN' identifier.
+ */
+function isNaNIdentifier(node) {
+    return Boolean(node) && (
+        astUtils.isSpecificId(node, "NaN") ||
+        astUtils.isSpecificMemberAccess(node, "Number", "NaN")
+    );
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Require calls to `isNaN()` when checking for `NaN`",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/use-isnan"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    enforceForSwitchCase: {
+                        type: "boolean",
+                        default: true
+                    },
+                    enforceForIndexOf: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        messages: {
+            comparisonWithNaN: "Use the isNaN function to compare with NaN.",
+            switchNaN: "'switch(NaN)' can never match a case clause. Use Number.isNaN instead of the switch.",
+            caseNaN: "'case NaN' can never match. Use Number.isNaN before the switch.",
+            indexOfNaN: "Array prototype method '{{ methodName }}' cannot find NaN."
+        }
+    },
+
+    create(context) {
+
+        const enforceForSwitchCase = !context.options[0] || context.options[0].enforceForSwitchCase;
+        const enforceForIndexOf = context.options[0] && context.options[0].enforceForIndexOf;
+
+        /**
+         * Checks the given `BinaryExpression` node for `foo === NaN` and other comparisons.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         */
+        function checkBinaryExpression(node) {
+            if (
+                /^(?:[<>]|[!=]=)=?$/u.test(node.operator) &&
+                (isNaNIdentifier(node.left) || isNaNIdentifier(node.right))
+            ) {
+                context.report({ node, messageId: "comparisonWithNaN" });
+            }
+        }
+
+        /**
+         * Checks the discriminant and all case clauses of the given `SwitchStatement` node for `switch(NaN)` and `case NaN:`
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         */
+        function checkSwitchStatement(node) {
+            if (isNaNIdentifier(node.discriminant)) {
+                context.report({ node, messageId: "switchNaN" });
+            }
+
+            for (const switchCase of node.cases) {
+                if (isNaNIdentifier(switchCase.test)) {
+                    context.report({ node: switchCase, messageId: "caseNaN" });
+                }
+            }
+        }
+
+        /**
+         * Checks the given `CallExpression` node for `.indexOf(NaN)` and `.lastIndexOf(NaN)`.
+         * @param {ASTNode} node The node to check.
+         * @returns {void}
+         */
+        function checkCallExpression(node) {
+            const callee = astUtils.skipChainExpression(node.callee);
+
+            if (callee.type === "MemberExpression") {
+                const methodName = astUtils.getStaticPropertyName(callee);
+
+                if (
+                    (methodName === "indexOf" || methodName === "lastIndexOf") &&
+                    node.arguments.length === 1 &&
+                    isNaNIdentifier(node.arguments[0])
+                ) {
+                    context.report({ node, messageId: "indexOfNaN", data: { methodName } });
+                }
+            }
+        }
+
+        const listeners = {
+            BinaryExpression: checkBinaryExpression
+        };
+
+        if (enforceForSwitchCase) {
+            listeners.SwitchStatement = checkSwitchStatement;
+        }
+
+        if (enforceForIndexOf) {
+            listeners.CallExpression = checkCallExpression;
+        }
+
+        return listeners;
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/utils/ast-utils.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/utils/ast-utils.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/utils/ast-utils.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,2282 @@
+/**
+ * @fileoverview Common utils for AST.
+ * @author Gyandeep Singh
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { KEYS: eslintVisitorKeys } = require("eslint-visitor-keys");
+const esutils = require("esutils");
+const espree = require("espree");
+const escapeRegExp = require("escape-string-regexp");
+const {
+    breakableTypePattern,
+    createGlobalLinebreakMatcher,
+    lineBreakPattern,
+    shebangPattern
+} = require("../../shared/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const anyFunctionPattern = /^(?:Function(?:Declaration|Expression)|ArrowFunctionExpression)$/u;
+const anyLoopPattern = /^(?:DoWhile|For|ForIn|ForOf|While)Statement$/u;
+const arrayMethodWithThisArgPattern = /^(?:every|filter|find(?:Last)?(?:Index)?|flatMap|forEach|map|some)$/u;
+const arrayOrTypedArrayPattern = /Array$/u;
+const bindOrCallOrApplyPattern = /^(?:bind|call|apply)$/u;
+const thisTagPattern = /^[\s*]*@this/mu;
+
+
+const COMMENTS_IGNORE_PATTERN = /^\s*(?:eslint|jshint\s+|jslint\s+|istanbul\s+|globals?\s+|exported\s+|jscs)/u;
+const ESLINT_DIRECTIVE_PATTERN = /^(?:eslint[- ]|(?:globals?|exported) )/u;
+const LINEBREAKS = new Set(["\r\n", "\r", "\n", "\u2028", "\u2029"]);
+
+// A set of node types that can contain a list of statements
+const STATEMENT_LIST_PARENTS = new Set(["Program", "BlockStatement", "StaticBlock", "SwitchCase"]);
+
+const DECIMAL_INTEGER_PATTERN = /^(?:0|0[0-7]*[89]\d*|[1-9](?:_?\d)*)$/u;
+
+// Tests the presence of at least one LegacyOctalEscapeSequence or NonOctalDecimalEscapeSequence in a raw string
+const OCTAL_OR_NON_OCTAL_DECIMAL_ESCAPE_PATTERN = /^(?:[^\\]|\\.)*\\(?:[1-9]|0[0-9])/su;
+
+const LOGICAL_ASSIGNMENT_OPERATORS = new Set(["&&=", "||=", "??="]);
+
+/**
+ * Checks reference if is non initializer and writable.
+ * @param {Reference} reference A reference to check.
+ * @param {int} index The index of the reference in the references.
+ * @param {Reference[]} references The array that the reference belongs to.
+ * @returns {boolean} Success/Failure
+ * @private
+ */
+function isModifyingReference(reference, index, references) {
+    const identifier = reference.identifier;
+
+    /*
+     * Destructuring assignments can have multiple default value, so
+     * possibly there are multiple writeable references for the same
+     * identifier.
+     */
+    const modifyingDifferentIdentifier = index === 0 ||
+        references[index - 1].identifier !== identifier;
+
+    return (identifier &&
+        reference.init === false &&
+        reference.isWrite() &&
+        modifyingDifferentIdentifier
+    );
+}
+
+/**
+ * Checks whether the given string starts with uppercase or not.
+ * @param {string} s The string to check.
+ * @returns {boolean} `true` if the string starts with uppercase.
+ */
+function startsWithUpperCase(s) {
+    return s[0] !== s[0].toLocaleLowerCase();
+}
+
+/**
+ * Checks whether or not a node is a constructor.
+ * @param {ASTNode} node A function node to check.
+ * @returns {boolean} Whether or not a node is a constructor.
+ */
+function isES5Constructor(node) {
+    return (node.id && startsWithUpperCase(node.id.name));
+}
+
+/**
+ * Finds a function node from ancestors of a node.
+ * @param {ASTNode} node A start node to find.
+ * @returns {Node|null} A found function node.
+ */
+function getUpperFunction(node) {
+    for (let currentNode = node; currentNode; currentNode = currentNode.parent) {
+        if (anyFunctionPattern.test(currentNode.type)) {
+            return currentNode;
+        }
+    }
+    return null;
+}
+
+/**
+ * Checks whether a given node is a function node or not.
+ * The following types are function nodes:
+ *
+ * - ArrowFunctionExpression
+ * - FunctionDeclaration
+ * - FunctionExpression
+ * @param {ASTNode|null} node A node to check.
+ * @returns {boolean} `true` if the node is a function node.
+ */
+function isFunction(node) {
+    return Boolean(node && anyFunctionPattern.test(node.type));
+}
+
+/**
+ * Checks whether a given node is a loop node or not.
+ * The following types are loop nodes:
+ *
+ * - DoWhileStatement
+ * - ForInStatement
+ * - ForOfStatement
+ * - ForStatement
+ * - WhileStatement
+ * @param {ASTNode|null} node A node to check.
+ * @returns {boolean} `true` if the node is a loop node.
+ */
+function isLoop(node) {
+    return Boolean(node && anyLoopPattern.test(node.type));
+}
+
+/**
+ * Checks whether the given node is in a loop or not.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is in a loop.
+ */
+function isInLoop(node) {
+    for (let currentNode = node; currentNode && !isFunction(currentNode); currentNode = currentNode.parent) {
+        if (isLoop(currentNode)) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+/**
+ * Determines whether the given node is a `null` literal.
+ * @param {ASTNode} node The node to check
+ * @returns {boolean} `true` if the node is a `null` literal
+ */
+function isNullLiteral(node) {
+
+    /*
+     * Checking `node.value === null` does not guarantee that a literal is a null literal.
+     * When parsing values that cannot be represented in the current environment (e.g. unicode
+     * regexes in Node 4), `node.value` is set to `null` because it wouldn't be possible to
+     * set `node.value` to a unicode regex. To make sure a literal is actually `null`, check
+     * `node.regex` instead. Also see: https://github.com/eslint/eslint/issues/8020
+     */
+    return node.type === "Literal" && node.value === null && !node.regex && !node.bigint;
+}
+
+/**
+ * Checks whether or not a node is `null` or `undefined`.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} Whether or not the node is a `null` or `undefined`.
+ * @public
+ */
+function isNullOrUndefined(node) {
+    return (
+        isNullLiteral(node) ||
+        (node.type === "Identifier" && node.name === "undefined") ||
+        (node.type === "UnaryExpression" && node.operator === "void")
+    );
+}
+
+/**
+ * Checks whether or not a node is callee.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} Whether or not the node is callee.
+ */
+function isCallee(node) {
+    return node.parent.type === "CallExpression" && node.parent.callee === node;
+}
+
+/**
+ * Returns the result of the string conversion applied to the evaluated value of the given expression node,
+ * if it can be determined statically.
+ *
+ * This function returns a `string` value for all `Literal` nodes and simple `TemplateLiteral` nodes only.
+ * In all other cases, this function returns `null`.
+ * @param {ASTNode} node Expression node.
+ * @returns {string|null} String value if it can be determined. Otherwise, `null`.
+ */
+function getStaticStringValue(node) {
+    switch (node.type) {
+        case "Literal":
+            if (node.value === null) {
+                if (isNullLiteral(node)) {
+                    return String(node.value); // "null"
+                }
+                if (node.regex) {
+                    return `/${node.regex.pattern}/${node.regex.flags}`;
+                }
+                if (node.bigint) {
+                    return node.bigint;
+                }
+
+                // Otherwise, this is an unknown literal. The function will return null.
+
+            } else {
+                return String(node.value);
+            }
+            break;
+        case "TemplateLiteral":
+            if (node.expressions.length === 0 && node.quasis.length === 1) {
+                return node.quasis[0].value.cooked;
+            }
+            break;
+
+            // no default
+    }
+
+    return null;
+}
+
+/**
+ * Gets the property name of a given node.
+ * The node can be a MemberExpression, a Property, or a MethodDefinition.
+ *
+ * If the name is dynamic, this returns `null`.
+ *
+ * For examples:
+ *
+ *     a.b           // => "b"
+ *     a["b"]        // => "b"
+ *     a['b']        // => "b"
+ *     a[`b`]        // => "b"
+ *     a[100]        // => "100"
+ *     a[b]          // => null
+ *     a["a" + "b"]  // => null
+ *     a[tag`b`]     // => null
+ *     a[`${b}`]     // => null
+ *
+ *     let a = {b: 1}            // => "b"
+ *     let a = {["b"]: 1}        // => "b"
+ *     let a = {['b']: 1}        // => "b"
+ *     let a = {[`b`]: 1}        // => "b"
+ *     let a = {[100]: 1}        // => "100"
+ *     let a = {[b]: 1}          // => null
+ *     let a = {["a" + "b"]: 1}  // => null
+ *     let a = {[tag`b`]: 1}     // => null
+ *     let a = {[`${b}`]: 1}     // => null
+ * @param {ASTNode} node The node to get.
+ * @returns {string|null} The property name if static. Otherwise, null.
+ */
+function getStaticPropertyName(node) {
+    let prop;
+
+    switch (node && node.type) {
+        case "ChainExpression":
+            return getStaticPropertyName(node.expression);
+
+        case "Property":
+        case "PropertyDefinition":
+        case "MethodDefinition":
+            prop = node.key;
+            break;
+
+        case "MemberExpression":
+            prop = node.property;
+            break;
+
+            // no default
+    }
+
+    if (prop) {
+        if (prop.type === "Identifier" && !node.computed) {
+            return prop.name;
+        }
+
+        return getStaticStringValue(prop);
+    }
+
+    return null;
+}
+
+/**
+ * Retrieve `ChainExpression#expression` value if the given node a `ChainExpression` node. Otherwise, pass through it.
+ * @param {ASTNode} node The node to address.
+ * @returns {ASTNode} The `ChainExpression#expression` value if the node is a `ChainExpression` node. Otherwise, the node.
+ */
+function skipChainExpression(node) {
+    return node && node.type === "ChainExpression" ? node.expression : node;
+}
+
+/**
+ * Check if the `actual` is an expected value.
+ * @param {string} actual The string value to check.
+ * @param {string | RegExp} expected The expected string value or pattern.
+ * @returns {boolean} `true` if the `actual` is an expected value.
+ */
+function checkText(actual, expected) {
+    return typeof expected === "string"
+        ? actual === expected
+        : expected.test(actual);
+}
+
+/**
+ * Check if a given node is an Identifier node with a given name.
+ * @param {ASTNode} node The node to check.
+ * @param {string | RegExp} name The expected name or the expected pattern of the object name.
+ * @returns {boolean} `true` if the node is an Identifier node with the name.
+ */
+function isSpecificId(node, name) {
+    return node.type === "Identifier" && checkText(node.name, name);
+}
+
+/**
+ * Check if a given node is member access with a given object name and property name pair.
+ * This is regardless of optional or not.
+ * @param {ASTNode} node The node to check.
+ * @param {string | RegExp | null} objectName The expected name or the expected pattern of the object name. If this is nullish, this method doesn't check object.
+ * @param {string | RegExp | null} propertyName The expected name or the expected pattern of the property name. If this is nullish, this method doesn't check property.
+ * @returns {boolean} `true` if the node is member access with the object name and property name pair.
+ * The node is a `MemberExpression` or `ChainExpression`.
+ */
+function isSpecificMemberAccess(node, objectName, propertyName) {
+    const checkNode = skipChainExpression(node);
+
+    if (checkNode.type !== "MemberExpression") {
+        return false;
+    }
+
+    if (objectName && !isSpecificId(checkNode.object, objectName)) {
+        return false;
+    }
+
+    if (propertyName) {
+        const actualPropertyName = getStaticPropertyName(checkNode);
+
+        if (typeof actualPropertyName !== "string" || !checkText(actualPropertyName, propertyName)) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+/**
+ * Check if two literal nodes are the same value.
+ * @param {ASTNode} left The Literal node to compare.
+ * @param {ASTNode} right The other Literal node to compare.
+ * @returns {boolean} `true` if the two literal nodes are the same value.
+ */
+function equalLiteralValue(left, right) {
+
+    // RegExp literal.
+    if (left.regex || right.regex) {
+        return Boolean(
+            left.regex &&
+            right.regex &&
+            left.regex.pattern === right.regex.pattern &&
+            left.regex.flags === right.regex.flags
+        );
+    }
+
+    // BigInt literal.
+    if (left.bigint || right.bigint) {
+        return left.bigint === right.bigint;
+    }
+
+    return left.value === right.value;
+}
+
+/**
+ * Check if two expressions reference the same value. For example:
+ *     a = a
+ *     a.b = a.b
+ *     a[0] = a[0]
+ *     a['b'] = a['b']
+ * @param {ASTNode} left The left side of the comparison.
+ * @param {ASTNode} right The right side of the comparison.
+ * @param {boolean} [disableStaticComputedKey] Don't address `a.b` and `a["b"]` are the same if `true`. For backward compatibility.
+ * @returns {boolean} `true` if both sides match and reference the same value.
+ */
+function isSameReference(left, right, disableStaticComputedKey = false) {
+    if (left.type !== right.type) {
+
+        // Handle `a.b` and `a?.b` are samely.
+        if (left.type === "ChainExpression") {
+            return isSameReference(left.expression, right, disableStaticComputedKey);
+        }
+        if (right.type === "ChainExpression") {
+            return isSameReference(left, right.expression, disableStaticComputedKey);
+        }
+
+        return false;
+    }
+
+    switch (left.type) {
+        case "Super":
+        case "ThisExpression":
+            return true;
+
+        case "Identifier":
+        case "PrivateIdentifier":
+            return left.name === right.name;
+        case "Literal":
+            return equalLiteralValue(left, right);
+
+        case "ChainExpression":
+            return isSameReference(left.expression, right.expression, disableStaticComputedKey);
+
+        case "MemberExpression": {
+            if (!disableStaticComputedKey) {
+                const nameA = getStaticPropertyName(left);
+
+                // x.y = x["y"]
+                if (nameA !== null) {
+                    return (
+                        isSameReference(left.object, right.object, disableStaticComputedKey) &&
+                        nameA === getStaticPropertyName(right)
+                    );
+                }
+            }
+
+            /*
+             * x[0] = x[0]
+             * x[y] = x[y]
+             * x.y = x.y
+             */
+            return (
+                left.computed === right.computed &&
+                isSameReference(left.object, right.object, disableStaticComputedKey) &&
+                isSameReference(left.property, right.property, disableStaticComputedKey)
+            );
+        }
+
+        default:
+            return false;
+    }
+}
+
+/**
+ * Checks whether or not a node is `Reflect.apply`.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} Whether or not the node is a `Reflect.apply`.
+ */
+function isReflectApply(node) {
+    return isSpecificMemberAccess(node, "Reflect", "apply");
+}
+
+/**
+ * Checks whether or not a node is `Array.from`.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} Whether or not the node is a `Array.from`.
+ */
+function isArrayFromMethod(node) {
+    return isSpecificMemberAccess(node, arrayOrTypedArrayPattern, "from");
+}
+
+/**
+ * Checks whether or not a node is a method which expects a function as a first argument, and `thisArg` as a second argument.
+ * @param {ASTNode} node A node to check.
+ * @returns {boolean} Whether or not the node is a method which expects a function as a first argument, and `thisArg` as a second argument.
+ */
+function isMethodWhichHasThisArg(node) {
+    return isSpecificMemberAccess(node, null, arrayMethodWithThisArgPattern);
+}
+
+/**
+ * Creates the negate function of the given function.
+ * @param {Function} f The function to negate.
+ * @returns {Function} Negated function.
+ */
+function negate(f) {
+    return token => !f(token);
+}
+
+/**
+ * Checks whether or not a node has a `@this` tag in its comments.
+ * @param {ASTNode} node A node to check.
+ * @param {SourceCode} sourceCode A SourceCode instance to get comments.
+ * @returns {boolean} Whether or not the node has a `@this` tag in its comments.
+ */
+function hasJSDocThisTag(node, sourceCode) {
+    const jsdocComment = sourceCode.getJSDocComment(node);
+
+    if (jsdocComment && thisTagPattern.test(jsdocComment.value)) {
+        return true;
+    }
+
+    // Checks `@this` in its leading comments for callbacks,
+    // because callbacks don't have its JSDoc comment.
+    // e.g.
+    //     sinon.test(/* @this sinon.Sandbox */function() { this.spy(); });
+    return sourceCode.getCommentsBefore(node).some(comment => thisTagPattern.test(comment.value));
+}
+
+/**
+ * Determines if a node is surrounded by parentheses.
+ * @param {SourceCode} sourceCode The ESLint source code object
+ * @param {ASTNode} node The node to be checked.
+ * @returns {boolean} True if the node is parenthesised.
+ * @private
+ */
+function isParenthesised(sourceCode, node) {
+    const previousToken = sourceCode.getTokenBefore(node),
+        nextToken = sourceCode.getTokenAfter(node);
+
+    return Boolean(previousToken && nextToken) &&
+        previousToken.value === "(" && previousToken.range[1] <= node.range[0] &&
+        nextToken.value === ")" && nextToken.range[0] >= node.range[1];
+}
+
+/**
+ * Checks if the given token is a `=` token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is a `=` token.
+ */
+function isEqToken(token) {
+    return token.value === "=" && token.type === "Punctuator";
+}
+
+/**
+ * Checks if the given token is an arrow token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is an arrow token.
+ */
+function isArrowToken(token) {
+    return token.value === "=>" && token.type === "Punctuator";
+}
+
+/**
+ * Checks if the given token is a comma token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is a comma token.
+ */
+function isCommaToken(token) {
+    return token.value === "," && token.type === "Punctuator";
+}
+
+/**
+ * Checks if the given token is a dot token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is a dot token.
+ */
+function isDotToken(token) {
+    return token.value === "." && token.type === "Punctuator";
+}
+
+/**
+ * Checks if the given token is a `?.` token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is a `?.` token.
+ */
+function isQuestionDotToken(token) {
+    return token.value === "?." && token.type === "Punctuator";
+}
+
+/**
+ * Checks if the given token is a semicolon token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is a semicolon token.
+ */
+function isSemicolonToken(token) {
+    return token.value === ";" && token.type === "Punctuator";
+}
+
+/**
+ * Checks if the given token is a colon token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is a colon token.
+ */
+function isColonToken(token) {
+    return token.value === ":" && token.type === "Punctuator";
+}
+
+/**
+ * Checks if the given token is an opening parenthesis token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is an opening parenthesis token.
+ */
+function isOpeningParenToken(token) {
+    return token.value === "(" && token.type === "Punctuator";
+}
+
+/**
+ * Checks if the given token is a closing parenthesis token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is a closing parenthesis token.
+ */
+function isClosingParenToken(token) {
+    return token.value === ")" && token.type === "Punctuator";
+}
+
+/**
+ * Checks if the given token is an opening square bracket token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is an opening square bracket token.
+ */
+function isOpeningBracketToken(token) {
+    return token.value === "[" && token.type === "Punctuator";
+}
+
+/**
+ * Checks if the given token is a closing square bracket token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is a closing square bracket token.
+ */
+function isClosingBracketToken(token) {
+    return token.value === "]" && token.type === "Punctuator";
+}
+
+/**
+ * Checks if the given token is an opening brace token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is an opening brace token.
+ */
+function isOpeningBraceToken(token) {
+    return token.value === "{" && token.type === "Punctuator";
+}
+
+/**
+ * Checks if the given token is a closing brace token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is a closing brace token.
+ */
+function isClosingBraceToken(token) {
+    return token.value === "}" && token.type === "Punctuator";
+}
+
+/**
+ * Checks if the given token is a comment token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is a comment token.
+ */
+function isCommentToken(token) {
+    return token.type === "Line" || token.type === "Block" || token.type === "Shebang";
+}
+
+/**
+ * Checks if the given token is a keyword token or not.
+ * @param {Token} token The token to check.
+ * @returns {boolean} `true` if the token is a keyword token.
+ */
+function isKeywordToken(token) {
+    return token.type === "Keyword";
+}
+
+/**
+ * Gets the `(` token of the given function node.
+ * @param {ASTNode} node The function node to get.
+ * @param {SourceCode} sourceCode The source code object to get tokens.
+ * @returns {Token} `(` token.
+ */
+function getOpeningParenOfParams(node, sourceCode) {
+
+    // If the node is an arrow function and doesn't have parens, this returns the identifier of the first param.
+    if (node.type === "ArrowFunctionExpression" && node.params.length === 1) {
+        const argToken = sourceCode.getFirstToken(node.params[0]);
+        const maybeParenToken = sourceCode.getTokenBefore(argToken);
+
+        return isOpeningParenToken(maybeParenToken) ? maybeParenToken : argToken;
+    }
+
+    // Otherwise, returns paren.
+    return node.id
+        ? sourceCode.getTokenAfter(node.id, isOpeningParenToken)
+        : sourceCode.getFirstToken(node, isOpeningParenToken);
+}
+
+/**
+ * Checks whether or not the tokens of two given nodes are same.
+ * @param {ASTNode} left A node 1 to compare.
+ * @param {ASTNode} right A node 2 to compare.
+ * @param {SourceCode} sourceCode The ESLint source code object.
+ * @returns {boolean} the source code for the given node.
+ */
+function equalTokens(left, right, sourceCode) {
+    const tokensL = sourceCode.getTokens(left);
+    const tokensR = sourceCode.getTokens(right);
+
+    if (tokensL.length !== tokensR.length) {
+        return false;
+    }
+    for (let i = 0; i < tokensL.length; ++i) {
+        if (tokensL[i].type !== tokensR[i].type ||
+            tokensL[i].value !== tokensR[i].value
+        ) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+/**
+ * Check if the given node is a true logical expression or not.
+ *
+ * The three binary expressions logical-or (`||`), logical-and (`&&`), and
+ * coalesce (`??`) are known as `ShortCircuitExpression`.
+ * But ESTree represents those by `LogicalExpression` node.
+ *
+ * This function rejects coalesce expressions of `LogicalExpression` node.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is `&&` or `||`.
+ * @see https://tc39.es/ecma262/#prod-ShortCircuitExpression
+ */
+function isLogicalExpression(node) {
+    return (
+        node.type === "LogicalExpression" &&
+            (node.operator === "&&" || node.operator === "||")
+    );
+}
+
+/**
+ * Check if the given node is a nullish coalescing expression or not.
+ *
+ * The three binary expressions logical-or (`||`), logical-and (`&&`), and
+ * coalesce (`??`) are known as `ShortCircuitExpression`.
+ * But ESTree represents those by `LogicalExpression` node.
+ *
+ * This function finds only coalesce expressions of `LogicalExpression` node.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is `??`.
+ */
+function isCoalesceExpression(node) {
+    return node.type === "LogicalExpression" && node.operator === "??";
+}
+
+/**
+ * Check if given two nodes are the pair of a logical expression and a coalesce expression.
+ * @param {ASTNode} left A node to check.
+ * @param {ASTNode} right Another node to check.
+ * @returns {boolean} `true` if the two nodes are the pair of a logical expression and a coalesce expression.
+ */
+function isMixedLogicalAndCoalesceExpressions(left, right) {
+    return (
+        (isLogicalExpression(left) && isCoalesceExpression(right)) ||
+            (isCoalesceExpression(left) && isLogicalExpression(right))
+    );
+}
+
+/**
+ * Checks if the given operator is a logical assignment operator.
+ * @param {string} operator The operator to check.
+ * @returns {boolean} `true` if the operator is a logical assignment operator.
+ */
+function isLogicalAssignmentOperator(operator) {
+    return LOGICAL_ASSIGNMENT_OPERATORS.has(operator);
+}
+
+/**
+ * Get the colon token of the given SwitchCase node.
+ * @param {ASTNode} node The SwitchCase node to get.
+ * @param {SourceCode} sourceCode The source code object to get tokens.
+ * @returns {Token} The colon token of the node.
+ */
+function getSwitchCaseColonToken(node, sourceCode) {
+    if (node.test) {
+        return sourceCode.getTokenAfter(node.test, isColonToken);
+    }
+    return sourceCode.getFirstToken(node, 1);
+}
+
+/**
+ * Gets ESM module export name represented by the given node.
+ * @param {ASTNode} node `Identifier` or string `Literal` node in a position
+ * that represents a module export name:
+ *   - `ImportSpecifier#imported`
+ *   - `ExportSpecifier#local` (if it is a re-export from another module)
+ *   - `ExportSpecifier#exported`
+ *   - `ExportAllDeclaration#exported`
+ * @returns {string} The module export name.
+ */
+function getModuleExportName(node) {
+    if (node.type === "Identifier") {
+        return node.name;
+    }
+
+    // string literal
+    return node.value;
+}
+
+/**
+ * Returns literal's value converted to the Boolean type
+ * @param {ASTNode} node any `Literal` node
+ * @returns {boolean | null} `true` when node is truthy, `false` when node is falsy,
+ *  `null` when it cannot be determined.
+ */
+function getBooleanValue(node) {
+    if (node.value === null) {
+
+        /*
+         * it might be a null literal or bigint/regex literal in unsupported environments .
+         * https://github.com/estree/estree/blob/14df8a024956ea289bd55b9c2226a1d5b8a473ee/es5.md#regexpliteral
+         * https://github.com/estree/estree/blob/14df8a024956ea289bd55b9c2226a1d5b8a473ee/es2020.md#bigintliteral
+         */
+
+        if (node.raw === "null") {
+            return false;
+        }
+
+        // regex is always truthy
+        if (typeof node.regex === "object") {
+            return true;
+        }
+
+        return null;
+    }
+
+    return !!node.value;
+}
+
+/**
+ * Checks if a branch node of LogicalExpression short circuits the whole condition
+ * @param {ASTNode} node The branch of main condition which needs to be checked
+ * @param {string} operator The operator of the main LogicalExpression.
+ * @returns {boolean} true when condition short circuits whole condition
+ */
+function isLogicalIdentity(node, operator) {
+    switch (node.type) {
+        case "Literal":
+            return (operator === "||" && getBooleanValue(node) === true) ||
+                  (operator === "&&" && getBooleanValue(node) === false);
+
+        case "UnaryExpression":
+            return (operator === "&&" && node.operator === "void");
+
+        case "LogicalExpression":
+
+            /*
+             * handles `a && false || b`
+             * `false` is an identity element of `&&` but not `||`
+             */
+            return operator === node.operator &&
+                    (
+                        isLogicalIdentity(node.left, operator) ||
+                        isLogicalIdentity(node.right, operator)
+                    );
+
+        case "AssignmentExpression":
+            return ["||=", "&&="].includes(node.operator) &&
+               operator === node.operator.slice(0, -1) &&
+               isLogicalIdentity(node.right, operator);
+
+       // no default
+    }
+    return false;
+}
+
+/**
+ * Checks if an identifier is a reference to a global variable.
+ * @param {Scope} scope The scope in which the identifier is referenced.
+ * @param {ASTNode} node An identifier node to check.
+ * @returns {boolean} `true` if the identifier is a reference to a global variable.
+ */
+function isReferenceToGlobalVariable(scope, node) {
+    const reference = scope.references.find(ref => ref.identifier === node);
+
+    return Boolean(
+        reference &&
+            reference.resolved &&
+            reference.resolved.scope.type === "global" &&
+            reference.resolved.defs.length === 0
+    );
+}
+
+
+/**
+ * Checks if a  node has a constant truthiness value.
+ * @param {Scope} scope Scope in which the node appears.
+ * @param {ASTNode} node The AST node to check.
+ * @param {boolean} inBooleanPosition `true` if checking the test of a
+ * condition. `false` in all other cases. When `false`, checks if -- for
+ * both string and number -- if coerced to that type, the value will
+ * be constant.
+ * @returns {boolean} true when node's truthiness is constant
+ * @private
+ */
+function isConstant(scope, node, inBooleanPosition) {
+
+    // node.elements can return null values in the case of sparse arrays ex. [,]
+    if (!node) {
+        return true;
+    }
+    switch (node.type) {
+        case "Literal":
+        case "ArrowFunctionExpression":
+        case "FunctionExpression":
+            return true;
+        case "ClassExpression":
+        case "ObjectExpression":
+
+            /**
+             * In theory objects like:
+             *
+             * `{toString: () => a}`
+             * `{valueOf: () => a}`
+             *
+             * Or a classes like:
+             *
+             * `class { static toString() { return a } }`
+             * `class { static valueOf() { return a } }`
+             *
+             * Are not constant verifiably when `inBooleanPosition` is
+             * false, but it's an edge case we've opted not to handle.
+             */
+            return true;
+        case "TemplateLiteral":
+            return (inBooleanPosition && node.quasis.some(quasi => quasi.value.cooked.length)) ||
+                        node.expressions.every(exp => isConstant(scope, exp, false));
+
+        case "ArrayExpression": {
+            if (!inBooleanPosition) {
+                return node.elements.every(element => isConstant(scope, element, false));
+            }
+            return true;
+        }
+
+        case "UnaryExpression":
+            if (
+                node.operator === "void" ||
+                        node.operator === "typeof" && inBooleanPosition
+            ) {
+                return true;
+            }
+
+            if (node.operator === "!") {
+                return isConstant(scope, node.argument, true);
+            }
+
+            return isConstant(scope, node.argument, false);
+
+        case "BinaryExpression":
+            return isConstant(scope, node.left, false) &&
+                            isConstant(scope, node.right, false) &&
+                            node.operator !== "in";
+
+        case "LogicalExpression": {
+            const isLeftConstant = isConstant(scope, node.left, inBooleanPosition);
+            const isRightConstant = isConstant(scope, node.right, inBooleanPosition);
+            const isLeftShortCircuit = (isLeftConstant && isLogicalIdentity(node.left, node.operator));
+            const isRightShortCircuit = (inBooleanPosition && isRightConstant && isLogicalIdentity(node.right, node.operator));
+
+            return (isLeftConstant && isRightConstant) ||
+                        isLeftShortCircuit ||
+                        isRightShortCircuit;
+        }
+        case "NewExpression":
+            return inBooleanPosition;
+        case "AssignmentExpression":
+            if (node.operator === "=") {
+                return isConstant(scope, node.right, inBooleanPosition);
+            }
+
+            if (["||=", "&&="].includes(node.operator) && inBooleanPosition) {
+                return isLogicalIdentity(node.right, node.operator.slice(0, -1));
+            }
+
+            return false;
+
+        case "SequenceExpression":
+            return isConstant(scope, node.expressions[node.expressions.length - 1], inBooleanPosition);
+        case "SpreadElement":
+            return isConstant(scope, node.argument, inBooleanPosition);
+        case "CallExpression":
+            if (node.callee.type === "Identifier" && node.callee.name === "Boolean") {
+                if (node.arguments.length === 0 || isConstant(scope, node.arguments[0], true)) {
+                    return isReferenceToGlobalVariable(scope, node.callee);
+                }
+            }
+            return false;
+        case "Identifier":
+            return node.name === "undefined" && isReferenceToGlobalVariable(scope, node);
+
+                // no default
+    }
+    return false;
+}
+
+/**
+ * Checks whether a node is an ExpressionStatement at the top level of a file or function body.
+ * A top-level ExpressionStatement node is a directive if it contains a single unparenthesized
+ * string literal and if it occurs either as the first sibling or immediately after another
+ * directive.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} Whether or not the node is an ExpressionStatement at the top level of a
+ * file or function body.
+ */
+function isTopLevelExpressionStatement(node) {
+    if (node.type !== "ExpressionStatement") {
+        return false;
+    }
+    const parent = node.parent;
+
+    return parent.type === "Program" || (parent.type === "BlockStatement" && isFunction(parent.parent));
+
+}
+
+/**
+ * Check whether the given node is a part of a directive prologue or not.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} `true` if the node is a part of directive prologue.
+ */
+function isDirective(node) {
+    return node.type === "ExpressionStatement" && typeof node.directive === "string";
+}
+
+/**
+ * Tests if a node appears at the beginning of an ancestor ExpressionStatement node.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} Whether the node appears at the beginning of an ancestor ExpressionStatement node.
+ */
+function isStartOfExpressionStatement(node) {
+    const start = node.range[0];
+    let ancestor = node;
+
+    while ((ancestor = ancestor.parent) && ancestor.range[0] === start) {
+        if (ancestor.type === "ExpressionStatement") {
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * Determines whether an opening parenthesis `(`, bracket `[` or backtick ``` ` ``` needs to be preceded by a semicolon.
+ * This opening parenthesis or bracket should be at the start of an `ExpressionStatement` or at the start of the body of an `ArrowFunctionExpression`.
+ * @type {(sourceCode: SourceCode, node: ASTNode) => boolean}
+ * @param {SourceCode} sourceCode The source code object.
+ * @param {ASTNode} node A node at the position where an opening parenthesis or bracket will be inserted.
+ * @returns {boolean} Whether a semicolon is required before the opening parenthesis or braket.
+ */
+let needsPrecedingSemicolon;
+
+{
+    const BREAK_OR_CONTINUE = new Set(["BreakStatement", "ContinueStatement"]);
+
+    // Declaration types that must contain a string Literal node at the end.
+    const DECLARATIONS = new Set(["ExportAllDeclaration", "ExportNamedDeclaration", "ImportDeclaration"]);
+
+    const IDENTIFIER_OR_KEYWORD = new Set(["Identifier", "Keyword"]);
+
+    // Keywords that can immediately precede an ExpressionStatement node, mapped to the their node types.
+    const NODE_TYPES_BY_KEYWORD = {
+        __proto__: null,
+        break: "BreakStatement",
+        continue: "ContinueStatement",
+        debugger: "DebuggerStatement",
+        do: "DoWhileStatement",
+        else: "IfStatement",
+        return: "ReturnStatement",
+        yield: "YieldExpression"
+    };
+
+    /*
+     * Before an opening parenthesis, postfix `++` and `--` always trigger ASI;
+     * the tokens `:`, `;`, `{` and `=>` don't expect a semicolon, as that would count as an empty statement.
+     */
+    const PUNCTUATORS = new Set([":", ";", "{", "=>", "++", "--"]);
+
+    /*
+     * Statements that can contain an `ExpressionStatement` after a closing parenthesis.
+     * DoWhileStatement is an exception in that it always triggers ASI after the closing parenthesis.
+     */
+    const STATEMENTS = new Set([
+        "DoWhileStatement",
+        "ForInStatement",
+        "ForOfStatement",
+        "ForStatement",
+        "IfStatement",
+        "WhileStatement",
+        "WithStatement"
+    ]);
+
+    needsPrecedingSemicolon =
+    function(sourceCode, node) {
+        const prevToken = sourceCode.getTokenBefore(node);
+
+        if (!prevToken || prevToken.type === "Punctuator" && PUNCTUATORS.has(prevToken.value)) {
+            return false;
+        }
+
+        const prevNode = sourceCode.getNodeByRangeIndex(prevToken.range[0]);
+
+        if (isClosingParenToken(prevToken)) {
+            return !STATEMENTS.has(prevNode.type);
+        }
+
+        if (isClosingBraceToken(prevToken)) {
+            return (
+                prevNode.type === "BlockStatement" && prevNode.parent.type === "FunctionExpression" ||
+                prevNode.type === "ClassBody" && prevNode.parent.type === "ClassExpression" ||
+                prevNode.type === "ObjectExpression"
+            );
+        }
+
+        if (IDENTIFIER_OR_KEYWORD.has(prevToken.type)) {
+            if (BREAK_OR_CONTINUE.has(prevNode.parent.type)) {
+                return false;
+            }
+
+            const keyword = prevToken.value;
+            const nodeType = NODE_TYPES_BY_KEYWORD[keyword];
+
+            return prevNode.type !== nodeType;
+        }
+
+        if (prevToken.type === "String") {
+            return !DECLARATIONS.has(prevNode.parent.type);
+        }
+
+        return true;
+    };
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = {
+    COMMENTS_IGNORE_PATTERN,
+    LINEBREAKS,
+    LINEBREAK_MATCHER: lineBreakPattern,
+    SHEBANG_MATCHER: shebangPattern,
+    STATEMENT_LIST_PARENTS,
+
+    /**
+     * Determines whether two adjacent tokens are on the same line.
+     * @param {Object} left The left token object.
+     * @param {Object} right The right token object.
+     * @returns {boolean} Whether or not the tokens are on the same line.
+     * @public
+     */
+    isTokenOnSameLine(left, right) {
+        return left.loc.end.line === right.loc.start.line;
+    },
+
+    isNullOrUndefined,
+    isCallee,
+    isES5Constructor,
+    getUpperFunction,
+    isFunction,
+    isLoop,
+    isInLoop,
+    isArrayFromMethod,
+    isParenthesised,
+    createGlobalLinebreakMatcher,
+    equalTokens,
+
+    isArrowToken,
+    isClosingBraceToken,
+    isClosingBracketToken,
+    isClosingParenToken,
+    isColonToken,
+    isCommaToken,
+    isCommentToken,
+    isDotToken,
+    isQuestionDotToken,
+    isKeywordToken,
+    isNotClosingBraceToken: negate(isClosingBraceToken),
+    isNotClosingBracketToken: negate(isClosingBracketToken),
+    isNotClosingParenToken: negate(isClosingParenToken),
+    isNotColonToken: negate(isColonToken),
+    isNotCommaToken: negate(isCommaToken),
+    isNotDotToken: negate(isDotToken),
+    isNotQuestionDotToken: negate(isQuestionDotToken),
+    isNotOpeningBraceToken: negate(isOpeningBraceToken),
+    isNotOpeningBracketToken: negate(isOpeningBracketToken),
+    isNotOpeningParenToken: negate(isOpeningParenToken),
+    isNotSemicolonToken: negate(isSemicolonToken),
+    isOpeningBraceToken,
+    isOpeningBracketToken,
+    isOpeningParenToken,
+    isSemicolonToken,
+    isEqToken,
+
+    /**
+     * Checks whether or not a given node is a string literal.
+     * @param {ASTNode} node A node to check.
+     * @returns {boolean} `true` if the node is a string literal.
+     */
+    isStringLiteral(node) {
+        return (
+            (node.type === "Literal" && typeof node.value === "string") ||
+            node.type === "TemplateLiteral"
+        );
+    },
+
+    /**
+     * Checks whether a given node is a breakable statement or not.
+     * The node is breakable if the node is one of the following type:
+     *
+     * - DoWhileStatement
+     * - ForInStatement
+     * - ForOfStatement
+     * - ForStatement
+     * - SwitchStatement
+     * - WhileStatement
+     * @param {ASTNode} node A node to check.
+     * @returns {boolean} `true` if the node is breakable.
+     */
+    isBreakableStatement(node) {
+        return breakableTypePattern.test(node.type);
+    },
+
+    /**
+     * Gets references which are non initializer and writable.
+     * @param {Reference[]} references An array of references.
+     * @returns {Reference[]} An array of only references which are non initializer and writable.
+     * @public
+     */
+    getModifyingReferences(references) {
+        return references.filter(isModifyingReference);
+    },
+
+    /**
+     * Validate that a string passed in is surrounded by the specified character
+     * @param {string} val The text to check.
+     * @param {string} character The character to see if it's surrounded by.
+     * @returns {boolean} True if the text is surrounded by the character, false if not.
+     * @private
+     */
+    isSurroundedBy(val, character) {
+        return val[0] === character && val[val.length - 1] === character;
+    },
+
+    /**
+     * Returns whether the provided node is an ESLint directive comment or not
+     * @param {Line|Block} node The comment token to be checked
+     * @returns {boolean} `true` if the node is an ESLint directive comment
+     */
+    isDirectiveComment(node) {
+        const comment = node.value.trim();
+
+        return (
+            node.type === "Line" && comment.startsWith("eslint-") ||
+            node.type === "Block" && ESLINT_DIRECTIVE_PATTERN.test(comment)
+        );
+    },
+
+    /**
+     * Gets the trailing statement of a given node.
+     *
+     *     if (code)
+     *         consequent;
+     *
+     * When taking this `IfStatement`, returns `consequent;` statement.
+     * @param {ASTNode} A node to get.
+     * @returns {ASTNode|null} The trailing statement's node.
+     */
+    getTrailingStatement: esutils.ast.trailingStatement,
+
+    /**
+     * Finds the variable by a given name in a given scope and its upper scopes.
+     * @param {eslint-scope.Scope} initScope A scope to start find.
+     * @param {string} name A variable name to find.
+     * @returns {eslint-scope.Variable|null} A found variable or `null`.
+     */
+    getVariableByName(initScope, name) {
+        let scope = initScope;
+
+        while (scope) {
+            const variable = scope.set.get(name);
+
+            if (variable) {
+                return variable;
+            }
+
+            scope = scope.upper;
+        }
+
+        return null;
+    },
+
+    /**
+     * Checks whether or not a given function node is the default `this` binding.
+     *
+     * First, this checks the node:
+     *
+     * - The given node is not in `PropertyDefinition#value` position.
+     * - The given node is not `StaticBlock`.
+     * - The function name does not start with uppercase. It's a convention to capitalize the names
+     *   of constructor functions. This check is not performed if `capIsConstructor` is set to `false`.
+     * - The function does not have a JSDoc comment that has a @this tag.
+     *
+     * Next, this checks the location of the node.
+     * If the location is below, this judges `this` is valid.
+     *
+     * - The location is not on an object literal.
+     * - The location is not assigned to a variable which starts with an uppercase letter. Applies to anonymous
+     *   functions only, as the name of the variable is considered to be the name of the function in this case.
+     *   This check is not performed if `capIsConstructor` is set to `false`.
+     * - The location is not on an ES2015 class.
+     * - Its `bind`/`call`/`apply` method is not called directly.
+     * - The function is not a callback of array methods (such as `.forEach()`) if `thisArg` is given.
+     * @param {ASTNode} node A function node to check. It also can be an implicit function, like `StaticBlock`
+     * or any expression that is `PropertyDefinition#value` node.
+     * @param {SourceCode} sourceCode A SourceCode instance to get comments.
+     * @param {boolean} [capIsConstructor = true] `false` disables the assumption that functions which name starts
+     * with an uppercase or are assigned to a variable which name starts with an uppercase are constructors.
+     * @returns {boolean} The function node is the default `this` binding.
+     */
+    isDefaultThisBinding(node, sourceCode, { capIsConstructor = true } = {}) {
+
+        /*
+         * Class field initializers are implicit functions, but ESTree doesn't have the AST node of field initializers.
+         * Therefore, A expression node at `PropertyDefinition#value` is a function.
+         * In this case, `this` is always not default binding.
+         */
+        if (node.parent.type === "PropertyDefinition" && node.parent.value === node) {
+            return false;
+        }
+
+        // Class static blocks are implicit functions. In this case, `this` is always not default binding.
+        if (node.type === "StaticBlock") {
+            return false;
+        }
+
+        if (
+            (capIsConstructor && isES5Constructor(node)) ||
+            hasJSDocThisTag(node, sourceCode)
+        ) {
+            return false;
+        }
+        const isAnonymous = node.id === null;
+        let currentNode = node;
+
+        while (currentNode) {
+            const parent = currentNode.parent;
+
+            switch (parent.type) {
+
+                /*
+                 * Looks up the destination.
+                 * e.g., obj.foo = nativeFoo || function foo() { ... };
+                 */
+                case "LogicalExpression":
+                case "ConditionalExpression":
+                case "ChainExpression":
+                    currentNode = parent;
+                    break;
+
+                /*
+                 * If the upper function is IIFE, checks the destination of the return value.
+                 * e.g.
+                 *   obj.foo = (function() {
+                 *     // setup...
+                 *     return function foo() { ... };
+                 *   })();
+                 *   obj.foo = (() =>
+                 *     function foo() { ... }
+                 *   )();
+                 */
+                case "ReturnStatement": {
+                    const func = getUpperFunction(parent);
+
+                    if (func === null || !isCallee(func)) {
+                        return true;
+                    }
+                    currentNode = func.parent;
+                    break;
+                }
+                case "ArrowFunctionExpression":
+                    if (currentNode !== parent.body || !isCallee(parent)) {
+                        return true;
+                    }
+                    currentNode = parent.parent;
+                    break;
+
+                /*
+                 * e.g.
+                 *   var obj = { foo() { ... } };
+                 *   var obj = { foo: function() { ... } };
+                 *   class A { constructor() { ... } }
+                 *   class A { foo() { ... } }
+                 *   class A { get foo() { ... } }
+                 *   class A { set foo() { ... } }
+                 *   class A { static foo() { ... } }
+                 *   class A { foo = function() { ... } }
+                 */
+                case "Property":
+                case "PropertyDefinition":
+                case "MethodDefinition":
+                    return parent.value !== currentNode;
+
+                /*
+                 * e.g.
+                 *   obj.foo = function foo() { ... };
+                 *   Foo = function() { ... };
+                 *   [obj.foo = function foo() { ... }] = a;
+                 *   [Foo = function() { ... }] = a;
+                 */
+                case "AssignmentExpression":
+                case "AssignmentPattern":
+                    if (parent.left.type === "MemberExpression") {
+                        return false;
+                    }
+                    if (
+                        capIsConstructor &&
+                        isAnonymous &&
+                        parent.left.type === "Identifier" &&
+                        startsWithUpperCase(parent.left.name)
+                    ) {
+                        return false;
+                    }
+                    return true;
+
+                /*
+                 * e.g.
+                 *   var Foo = function() { ... };
+                 */
+                case "VariableDeclarator":
+                    return !(
+                        capIsConstructor &&
+                        isAnonymous &&
+                        parent.init === currentNode &&
+                        parent.id.type === "Identifier" &&
+                        startsWithUpperCase(parent.id.name)
+                    );
+
+                /*
+                 * e.g.
+                 *   var foo = function foo() { ... }.bind(obj);
+                 *   (function foo() { ... }).call(obj);
+                 *   (function foo() { ... }).apply(obj, []);
+                 */
+                case "MemberExpression":
+                    if (
+                        parent.object === currentNode &&
+                        isSpecificMemberAccess(parent, null, bindOrCallOrApplyPattern)
+                    ) {
+                        const maybeCalleeNode = parent.parent.type === "ChainExpression"
+                            ? parent.parent
+                            : parent;
+
+                        return !(
+                            isCallee(maybeCalleeNode) &&
+                            maybeCalleeNode.parent.arguments.length >= 1 &&
+                            !isNullOrUndefined(maybeCalleeNode.parent.arguments[0])
+                        );
+                    }
+                    return true;
+
+                /*
+                 * e.g.
+                 *   Reflect.apply(function() {}, obj, []);
+                 *   Array.from([], function() {}, obj);
+                 *   list.forEach(function() {}, obj);
+                 */
+                case "CallExpression":
+                    if (isReflectApply(parent.callee)) {
+                        return (
+                            parent.arguments.length !== 3 ||
+                            parent.arguments[0] !== currentNode ||
+                            isNullOrUndefined(parent.arguments[1])
+                        );
+                    }
+                    if (isArrayFromMethod(parent.callee)) {
+                        return (
+                            parent.arguments.length !== 3 ||
+                            parent.arguments[1] !== currentNode ||
+                            isNullOrUndefined(parent.arguments[2])
+                        );
+                    }
+                    if (isMethodWhichHasThisArg(parent.callee)) {
+                        return (
+                            parent.arguments.length !== 2 ||
+                            parent.arguments[0] !== currentNode ||
+                            isNullOrUndefined(parent.arguments[1])
+                        );
+                    }
+                    return true;
+
+                // Otherwise `this` is default.
+                default:
+                    return true;
+            }
+        }
+
+        /* c8 ignore next */
+        return true;
+    },
+
+    /**
+     * Get the precedence level based on the node type
+     * @param {ASTNode} node node to evaluate
+     * @returns {int} precedence level
+     * @private
+     */
+    getPrecedence(node) {
+        switch (node.type) {
+            case "SequenceExpression":
+                return 0;
+
+            case "AssignmentExpression":
+            case "ArrowFunctionExpression":
+            case "YieldExpression":
+                return 1;
+
+            case "ConditionalExpression":
+                return 3;
+
+            case "LogicalExpression":
+                switch (node.operator) {
+                    case "||":
+                    case "??":
+                        return 4;
+                    case "&&":
+                        return 5;
+
+                    // no default
+                }
+
+                /* falls through */
+
+            case "BinaryExpression":
+
+                switch (node.operator) {
+                    case "|":
+                        return 6;
+                    case "^":
+                        return 7;
+                    case "&":
+                        return 8;
+                    case "==":
+                    case "!=":
+                    case "===":
+                    case "!==":
+                        return 9;
+                    case "<":
+                    case "<=":
+                    case ">":
+                    case ">=":
+                    case "in":
+                    case "instanceof":
+                        return 10;
+                    case "<<":
+                    case ">>":
+                    case ">>>":
+                        return 11;
+                    case "+":
+                    case "-":
+                        return 12;
+                    case "*":
+                    case "/":
+                    case "%":
+                        return 13;
+                    case "**":
+                        return 15;
+
+                    // no default
+                }
+
+                /* falls through */
+
+            case "UnaryExpression":
+            case "AwaitExpression":
+                return 16;
+
+            case "UpdateExpression":
+                return 17;
+
+            case "CallExpression":
+            case "ChainExpression":
+            case "ImportExpression":
+                return 18;
+
+            case "NewExpression":
+                return 19;
+
+            default:
+                if (node.type in eslintVisitorKeys) {
+                    return 20;
+                }
+
+                /*
+                 * if the node is not a standard node that we know about, then assume it has the lowest precedence
+                 * this will mean that rules will wrap unknown nodes in parentheses where applicable instead of
+                 * unwrapping them and potentially changing the meaning of the code or introducing a syntax error.
+                 */
+                return -1;
+        }
+    },
+
+    /**
+     * Checks whether the given node is an empty block node or not.
+     * @param {ASTNode|null} node The node to check.
+     * @returns {boolean} `true` if the node is an empty block.
+     */
+    isEmptyBlock(node) {
+        return Boolean(node && node.type === "BlockStatement" && node.body.length === 0);
+    },
+
+    /**
+     * Checks whether the given node is an empty function node or not.
+     * @param {ASTNode|null} node The node to check.
+     * @returns {boolean} `true` if the node is an empty function.
+     */
+    isEmptyFunction(node) {
+        return isFunction(node) && module.exports.isEmptyBlock(node.body);
+    },
+
+    /**
+     * Get directives from directive prologue of a Program or Function node.
+     * @param {ASTNode} node The node to check.
+     * @returns {ASTNode[]} The directives found in the directive prologue.
+     */
+    getDirectivePrologue(node) {
+        const directives = [];
+
+        // Directive prologues only occur at the top of files or functions.
+        if (
+            node.type === "Program" ||
+            node.type === "FunctionDeclaration" ||
+            node.type === "FunctionExpression" ||
+
+            /*
+             * Do not check arrow functions with implicit return.
+             * `() => "use strict";` returns the string `"use strict"`.
+             */
+            (node.type === "ArrowFunctionExpression" && node.body.type === "BlockStatement")
+        ) {
+            const statements = node.type === "Program" ? node.body : node.body.body;
+
+            for (const statement of statements) {
+                if (
+                    statement.type === "ExpressionStatement" &&
+                    statement.expression.type === "Literal"
+                ) {
+                    directives.push(statement);
+                } else {
+                    break;
+                }
+            }
+        }
+
+        return directives;
+    },
+
+    /**
+     * Determines whether this node is a decimal integer literal. If a node is a decimal integer literal, a dot added
+     * after the node will be parsed as a decimal point, rather than a property-access dot.
+     * @param {ASTNode} node The node to check.
+     * @returns {boolean} `true` if this node is a decimal integer.
+     * @example
+     *
+     * 0         // true
+     * 5         // true
+     * 50        // true
+     * 5_000     // true
+     * 1_234_56  // true
+     * 08        // true
+     * 0192      // true
+     * 5.        // false
+     * .5        // false
+     * 5.0       // false
+     * 5.00_00   // false
+     * 05        // false
+     * 0x5       // false
+     * 0b101     // false
+     * 0b11_01   // false
+     * 0o5       // false
+     * 5e0       // false
+     * 5e1_000   // false
+     * 5n        // false
+     * 1_000n    // false
+     * "5"       // false
+     *
+     */
+    isDecimalInteger(node) {
+        return node.type === "Literal" && typeof node.value === "number" &&
+            DECIMAL_INTEGER_PATTERN.test(node.raw);
+    },
+
+    /**
+     * Determines whether this token is a decimal integer numeric token.
+     * This is similar to isDecimalInteger(), but for tokens.
+     * @param {Token} token The token to check.
+     * @returns {boolean} `true` if this token is a decimal integer.
+     */
+    isDecimalIntegerNumericToken(token) {
+        return token.type === "Numeric" && DECIMAL_INTEGER_PATTERN.test(token.value);
+    },
+
+    /**
+     * Gets the name and kind of the given function node.
+     *
+     * - `function foo() {}`  .................... `function 'foo'`
+     * - `(function foo() {})`  .................. `function 'foo'`
+     * - `(function() {})`  ...................... `function`
+     * - `function* foo() {}`  ................... `generator function 'foo'`
+     * - `(function* foo() {})`  ................. `generator function 'foo'`
+     * - `(function*() {})`  ..................... `generator function`
+     * - `() => {}`  ............................. `arrow function`
+     * - `async () => {}`  ....................... `async arrow function`
+     * - `({ foo: function foo() {} })`  ......... `method 'foo'`
+     * - `({ foo: function() {} })`  ............. `method 'foo'`
+     * - `({ ['foo']: function() {} })`  ......... `method 'foo'`
+     * - `({ [foo]: function() {} })`  ........... `method`
+     * - `({ foo() {} })`  ....................... `method 'foo'`
+     * - `({ foo: function* foo() {} })`  ........ `generator method 'foo'`
+     * - `({ foo: function*() {} })`  ............ `generator method 'foo'`
+     * - `({ ['foo']: function*() {} })`  ........ `generator method 'foo'`
+     * - `({ [foo]: function*() {} })`  .......... `generator method`
+     * - `({ *foo() {} })`  ...................... `generator method 'foo'`
+     * - `({ foo: async function foo() {} })`  ... `async method 'foo'`
+     * - `({ foo: async function() {} })`  ....... `async method 'foo'`
+     * - `({ ['foo']: async function() {} })`  ... `async method 'foo'`
+     * - `({ [foo]: async function() {} })`  ..... `async method`
+     * - `({ async foo() {} })`  ................. `async method 'foo'`
+     * - `({ get foo() {} })`  ................... `getter 'foo'`
+     * - `({ set foo(a) {} })`  .................. `setter 'foo'`
+     * - `class A { constructor() {} }`  ......... `constructor`
+     * - `class A { foo() {} }`  ................. `method 'foo'`
+     * - `class A { *foo() {} }`  ................ `generator method 'foo'`
+     * - `class A { async foo() {} }`  ........... `async method 'foo'`
+     * - `class A { ['foo']() {} }`  ............. `method 'foo'`
+     * - `class A { *['foo']() {} }`  ............ `generator method 'foo'`
+     * - `class A { async ['foo']() {} }`  ....... `async method 'foo'`
+     * - `class A { [foo]() {} }`  ............... `method`
+     * - `class A { *[foo]() {} }`  .............. `generator method`
+     * - `class A { async [foo]() {} }`  ......... `async method`
+     * - `class A { get foo() {} }`  ............. `getter 'foo'`
+     * - `class A { set foo(a) {} }`  ............ `setter 'foo'`
+     * - `class A { static foo() {} }`  .......... `static method 'foo'`
+     * - `class A { static *foo() {} }`  ......... `static generator method 'foo'`
+     * - `class A { static async foo() {} }`  .... `static async method 'foo'`
+     * - `class A { static get foo() {} }`  ...... `static getter 'foo'`
+     * - `class A { static set foo(a) {} }`  ..... `static setter 'foo'`
+     * - `class A { foo = () => {}; }`  .......... `method 'foo'`
+     * - `class A { foo = function() {}; }`  ..... `method 'foo'`
+     * - `class A { foo = function bar() {}; }`  . `method 'foo'`
+     * - `class A { static foo = () => {}; }`  ... `static method 'foo'`
+     * - `class A { '#foo' = () => {}; }`  ....... `method '#foo'`
+     * - `class A { #foo = () => {}; }`  ......... `private method #foo`
+     * - `class A { static #foo = () => {}; }`  .. `static private method #foo`
+     * - `class A { '#foo'() {} }`  .............. `method '#foo'`
+     * - `class A { #foo() {} }`  ................ `private method #foo`
+     * - `class A { static #foo() {} }`  ......... `static private method #foo`
+     * @param {ASTNode} node The function node to get.
+     * @returns {string} The name and kind of the function node.
+     */
+    getFunctionNameWithKind(node) {
+        const parent = node.parent;
+        const tokens = [];
+
+        if (parent.type === "MethodDefinition" || parent.type === "PropertyDefinition") {
+
+            // The proposal uses `static` word consistently before visibility words: https://github.com/tc39/proposal-static-class-features
+            if (parent.static) {
+                tokens.push("static");
+            }
+            if (!parent.computed && parent.key.type === "PrivateIdentifier") {
+                tokens.push("private");
+            }
+        }
+        if (node.async) {
+            tokens.push("async");
+        }
+        if (node.generator) {
+            tokens.push("generator");
+        }
+
+        if (parent.type === "Property" || parent.type === "MethodDefinition") {
+            if (parent.kind === "constructor") {
+                return "constructor";
+            }
+            if (parent.kind === "get") {
+                tokens.push("getter");
+            } else if (parent.kind === "set") {
+                tokens.push("setter");
+            } else {
+                tokens.push("method");
+            }
+        } else if (parent.type === "PropertyDefinition") {
+            tokens.push("method");
+        } else {
+            if (node.type === "ArrowFunctionExpression") {
+                tokens.push("arrow");
+            }
+            tokens.push("function");
+        }
+
+        if (parent.type === "Property" || parent.type === "MethodDefinition" || parent.type === "PropertyDefinition") {
+            if (!parent.computed && parent.key.type === "PrivateIdentifier") {
+                tokens.push(`#${parent.key.name}`);
+            } else {
+                const name = getStaticPropertyName(parent);
+
+                if (name !== null) {
+                    tokens.push(`'${name}'`);
+                } else if (node.id) {
+                    tokens.push(`'${node.id.name}'`);
+                }
+            }
+        } else if (node.id) {
+            tokens.push(`'${node.id.name}'`);
+        }
+
+        return tokens.join(" ");
+    },
+
+    /**
+     * Gets the location of the given function node for reporting.
+     *
+     * - `function foo() {}`
+     *    ^^^^^^^^^^^^
+     * - `(function foo() {})`
+     *     ^^^^^^^^^^^^
+     * - `(function() {})`
+     *     ^^^^^^^^
+     * - `function* foo() {}`
+     *    ^^^^^^^^^^^^^
+     * - `(function* foo() {})`
+     *     ^^^^^^^^^^^^^
+     * - `(function*() {})`
+     *     ^^^^^^^^^
+     * - `() => {}`
+     *       ^^
+     * - `async () => {}`
+     *             ^^
+     * - `({ foo: function foo() {} })`
+     *       ^^^^^^^^^^^^^^^^^
+     * - `({ foo: function() {} })`
+     *       ^^^^^^^^^^^^^
+     * - `({ ['foo']: function() {} })`
+     *       ^^^^^^^^^^^^^^^^^
+     * - `({ [foo]: function() {} })`
+     *       ^^^^^^^^^^^^^^^
+     * - `({ foo() {} })`
+     *       ^^^
+     * - `({ foo: function* foo() {} })`
+     *       ^^^^^^^^^^^^^^^^^^
+     * - `({ foo: function*() {} })`
+     *       ^^^^^^^^^^^^^^
+     * - `({ ['foo']: function*() {} })`
+     *       ^^^^^^^^^^^^^^^^^^
+     * - `({ [foo]: function*() {} })`
+     *       ^^^^^^^^^^^^^^^^
+     * - `({ *foo() {} })`
+     *       ^^^^
+     * - `({ foo: async function foo() {} })`
+     *       ^^^^^^^^^^^^^^^^^^^^^^^
+     * - `({ foo: async function() {} })`
+     *       ^^^^^^^^^^^^^^^^^^^
+     * - `({ ['foo']: async function() {} })`
+     *       ^^^^^^^^^^^^^^^^^^^^^^^
+     * - `({ [foo]: async function() {} })`
+     *       ^^^^^^^^^^^^^^^^^^^^^
+     * - `({ async foo() {} })`
+     *       ^^^^^^^^^
+     * - `({ get foo() {} })`
+     *       ^^^^^^^
+     * - `({ set foo(a) {} })`
+     *       ^^^^^^^
+     * - `class A { constructor() {} }`
+     *              ^^^^^^^^^^^
+     * - `class A { foo() {} }`
+     *              ^^^
+     * - `class A { *foo() {} }`
+     *              ^^^^
+     * - `class A { async foo() {} }`
+     *              ^^^^^^^^^
+     * - `class A { ['foo']() {} }`
+     *              ^^^^^^^
+     * - `class A { *['foo']() {} }`
+     *              ^^^^^^^^
+     * - `class A { async ['foo']() {} }`
+     *              ^^^^^^^^^^^^^
+     * - `class A { [foo]() {} }`
+     *              ^^^^^
+     * - `class A { *[foo]() {} }`
+     *              ^^^^^^
+     * - `class A { async [foo]() {} }`
+     *              ^^^^^^^^^^^
+     * - `class A { get foo() {} }`
+     *              ^^^^^^^
+     * - `class A { set foo(a) {} }`
+     *              ^^^^^^^
+     * - `class A { static foo() {} }`
+     *              ^^^^^^^^^^
+     * - `class A { static *foo() {} }`
+     *              ^^^^^^^^^^^
+     * - `class A { static async foo() {} }`
+     *              ^^^^^^^^^^^^^^^^
+     * - `class A { static get foo() {} }`
+     *              ^^^^^^^^^^^^^^
+     * - `class A { static set foo(a) {} }`
+     *              ^^^^^^^^^^^^^^
+     * - `class A { foo = function() {} }`
+     *              ^^^^^^^^^^^^^^
+     * - `class A { static foo = function() {} }`
+     *              ^^^^^^^^^^^^^^^^^^^^^
+     * - `class A { foo = (a, b) => {} }`
+     *              ^^^^^^
+     * @param {ASTNode} node The function node to get.
+     * @param {SourceCode} sourceCode The source code object to get tokens.
+     * @returns {string} The location of the function node for reporting.
+     */
+    getFunctionHeadLoc(node, sourceCode) {
+        const parent = node.parent;
+        let start = null;
+        let end = null;
+
+        if (parent.type === "Property" || parent.type === "MethodDefinition" || parent.type === "PropertyDefinition") {
+            start = parent.loc.start;
+            end = getOpeningParenOfParams(node, sourceCode).loc.start;
+        } else if (node.type === "ArrowFunctionExpression") {
+            const arrowToken = sourceCode.getTokenBefore(node.body, isArrowToken);
+
+            start = arrowToken.loc.start;
+            end = arrowToken.loc.end;
+        } else {
+            start = node.loc.start;
+            end = getOpeningParenOfParams(node, sourceCode).loc.start;
+        }
+
+        return {
+            start: Object.assign({}, start),
+            end: Object.assign({}, end)
+        };
+    },
+
+    /**
+     * Gets next location when the result is not out of bound, otherwise returns null.
+     *
+     * Assumptions:
+     *
+     * - The given location represents a valid location in the given source code.
+     * - Columns are 0-based.
+     * - Lines are 1-based.
+     * - Column immediately after the last character in a line (not incl. linebreaks) is considered to be a valid location.
+     * - If the source code ends with a linebreak, `sourceCode.lines` array will have an extra element (empty string) at the end.
+     *   The start (column 0) of that extra line is considered to be a valid location.
+     *
+     * Examples of successive locations (line, column):
+     *
+     * code: foo
+     * locations: (1, 0) -> (1, 1) -> (1, 2) -> (1, 3) -> null
+     *
+     * code: foo<LF>
+     * locations: (1, 0) -> (1, 1) -> (1, 2) -> (1, 3) -> (2, 0) -> null
+     *
+     * code: foo<CR><LF>
+     * locations: (1, 0) -> (1, 1) -> (1, 2) -> (1, 3) -> (2, 0) -> null
+     *
+     * code: a<LF>b
+     * locations: (1, 0) -> (1, 1) -> (2, 0) -> (2, 1) -> null
+     *
+     * code: a<LF>b<LF>
+     * locations: (1, 0) -> (1, 1) -> (2, 0) -> (2, 1) -> (3, 0) -> null
+     *
+     * code: a<CR><LF>b<CR><LF>
+     * locations: (1, 0) -> (1, 1) -> (2, 0) -> (2, 1) -> (3, 0) -> null
+     *
+     * code: a<LF><LF>
+     * locations: (1, 0) -> (1, 1) -> (2, 0) -> (3, 0) -> null
+     *
+     * code: <LF>
+     * locations: (1, 0) -> (2, 0) -> null
+     *
+     * code:
+     * locations: (1, 0) -> null
+     * @param {SourceCode} sourceCode The sourceCode
+     * @param {{line: number, column: number}} location The location
+     * @returns {{line: number, column: number} | null} Next location
+     */
+    getNextLocation(sourceCode, { line, column }) {
+        if (column < sourceCode.lines[line - 1].length) {
+            return {
+                line,
+                column: column + 1
+            };
+        }
+
+        if (line < sourceCode.lines.length) {
+            return {
+                line: line + 1,
+                column: 0
+            };
+        }
+
+        return null;
+    },
+
+    /**
+     * Gets the parenthesized text of a node. This is similar to sourceCode.getText(node), but it also includes any parentheses
+     * surrounding the node.
+     * @param {SourceCode} sourceCode The source code object
+     * @param {ASTNode} node An expression node
+     * @returns {string} The text representing the node, with all surrounding parentheses included
+     */
+    getParenthesisedText(sourceCode, node) {
+        let leftToken = sourceCode.getFirstToken(node);
+        let rightToken = sourceCode.getLastToken(node);
+
+        while (
+            sourceCode.getTokenBefore(leftToken) &&
+            sourceCode.getTokenBefore(leftToken).type === "Punctuator" &&
+            sourceCode.getTokenBefore(leftToken).value === "(" &&
+            sourceCode.getTokenAfter(rightToken) &&
+            sourceCode.getTokenAfter(rightToken).type === "Punctuator" &&
+            sourceCode.getTokenAfter(rightToken).value === ")"
+        ) {
+            leftToken = sourceCode.getTokenBefore(leftToken);
+            rightToken = sourceCode.getTokenAfter(rightToken);
+        }
+
+        return sourceCode.getText().slice(leftToken.range[0], rightToken.range[1]);
+    },
+
+    /**
+     * Determine if a node has a possibility to be an Error object
+     * @param {ASTNode} node ASTNode to check
+     * @returns {boolean} True if there is a chance it contains an Error obj
+     */
+    couldBeError(node) {
+        switch (node.type) {
+            case "Identifier":
+            case "CallExpression":
+            case "NewExpression":
+            case "MemberExpression":
+            case "TaggedTemplateExpression":
+            case "YieldExpression":
+            case "AwaitExpression":
+            case "ChainExpression":
+                return true; // possibly an error object.
+
+            case "AssignmentExpression":
+                if (["=", "&&="].includes(node.operator)) {
+                    return module.exports.couldBeError(node.right);
+                }
+
+                if (["||=", "??="].includes(node.operator)) {
+                    return module.exports.couldBeError(node.left) || module.exports.couldBeError(node.right);
+                }
+
+                /**
+                 * All other assignment operators are mathematical assignment operators (arithmetic or bitwise).
+                 * An assignment expression with a mathematical operator can either evaluate to a primitive value,
+                 * or throw, depending on the operands. Thus, it cannot evaluate to an `Error` object.
+                 */
+                return false;
+
+            case "SequenceExpression": {
+                const exprs = node.expressions;
+
+                return exprs.length !== 0 && module.exports.couldBeError(exprs[exprs.length - 1]);
+            }
+
+            case "LogicalExpression":
+
+                /*
+                 * If the && operator short-circuits, the left side was falsy and therefore not an error, and if it
+                 * doesn't short-circuit, it takes the value from the right side, so the right side must always be
+                 * a plausible error. A future improvement could verify that the left side could be truthy by
+                 * excluding falsy literals.
+                 */
+                if (node.operator === "&&") {
+                    return module.exports.couldBeError(node.right);
+                }
+
+                return module.exports.couldBeError(node.left) || module.exports.couldBeError(node.right);
+
+            case "ConditionalExpression":
+                return module.exports.couldBeError(node.consequent) || module.exports.couldBeError(node.alternate);
+
+            default:
+                return false;
+        }
+    },
+
+    /**
+     * Check if a given node is a numeric literal or not.
+     * @param {ASTNode} node The node to check.
+     * @returns {boolean} `true` if the node is a number or bigint literal.
+     */
+    isNumericLiteral(node) {
+        return (
+            node.type === "Literal" &&
+            (typeof node.value === "number" || Boolean(node.bigint))
+        );
+    },
+
+    /**
+     * Determines whether two tokens can safely be placed next to each other without merging into a single token
+     * @param {Token|string} leftValue The left token. If this is a string, it will be tokenized and the last token will be used.
+     * @param {Token|string} rightValue The right token. If this is a string, it will be tokenized and the first token will be used.
+     * @returns {boolean} If the tokens cannot be safely placed next to each other, returns `false`. If the tokens can be placed
+     * next to each other, behavior is undefined (although it should return `true` in most cases).
+     */
+    canTokensBeAdjacent(leftValue, rightValue) {
+        const espreeOptions = {
+            ecmaVersion: espree.latestEcmaVersion,
+            comment: true,
+            range: true
+        };
+
+        let leftToken;
+
+        if (typeof leftValue === "string") {
+            let tokens;
+
+            try {
+                tokens = espree.tokenize(leftValue, espreeOptions);
+            } catch {
+                return false;
+            }
+
+            const comments = tokens.comments;
+
+            leftToken = tokens[tokens.length - 1];
+            if (comments.length) {
+                const lastComment = comments[comments.length - 1];
+
+                if (!leftToken || lastComment.range[0] > leftToken.range[0]) {
+                    leftToken = lastComment;
+                }
+            }
+        } else {
+            leftToken = leftValue;
+        }
+
+        /*
+         * If a hashbang comment was passed as a token object from SourceCode,
+         * its type will be "Shebang" because of the way ESLint itself handles hashbangs.
+         * If a hashbang comment was passed in a string and then tokenized in this function,
+         * its type will be "Hashbang" because of the way Espree tokenizes hashbangs.
+         */
+        if (leftToken.type === "Shebang" || leftToken.type === "Hashbang") {
+            return false;
+        }
+
+        let rightToken;
+
+        if (typeof rightValue === "string") {
+            let tokens;
+
+            try {
+                tokens = espree.tokenize(rightValue, espreeOptions);
+            } catch {
+                return false;
+            }
+
+            const comments = tokens.comments;
+
+            rightToken = tokens[0];
+            if (comments.length) {
+                const firstComment = comments[0];
+
+                if (!rightToken || firstComment.range[0] < rightToken.range[0]) {
+                    rightToken = firstComment;
+                }
+            }
+        } else {
+            rightToken = rightValue;
+        }
+
+        if (leftToken.type === "Punctuator" || rightToken.type === "Punctuator") {
+            if (leftToken.type === "Punctuator" && rightToken.type === "Punctuator") {
+                const PLUS_TOKENS = new Set(["+", "++"]);
+                const MINUS_TOKENS = new Set(["-", "--"]);
+
+                return !(
+                    PLUS_TOKENS.has(leftToken.value) && PLUS_TOKENS.has(rightToken.value) ||
+                    MINUS_TOKENS.has(leftToken.value) && MINUS_TOKENS.has(rightToken.value)
+                );
+            }
+            if (leftToken.type === "Punctuator" && leftToken.value === "/") {
+                return !["Block", "Line", "RegularExpression"].includes(rightToken.type);
+            }
+            return true;
+        }
+
+        if (
+            leftToken.type === "String" || rightToken.type === "String" ||
+            leftToken.type === "Template" || rightToken.type === "Template"
+        ) {
+            return true;
+        }
+
+        if (leftToken.type !== "Numeric" && rightToken.type === "Numeric" && rightToken.value.startsWith(".")) {
+            return true;
+        }
+
+        if (leftToken.type === "Block" || rightToken.type === "Block" || rightToken.type === "Line") {
+            return true;
+        }
+
+        if (rightToken.type === "PrivateIdentifier") {
+            return true;
+        }
+
+        return false;
+    },
+
+    /**
+     * Get the `loc` object of a given name in a `/*globals` directive comment.
+     * @param {SourceCode} sourceCode The source code to convert index to loc.
+     * @param {Comment} comment The `/*globals` directive comment which include the name.
+     * @param {string} name The name to find.
+     * @returns {SourceLocation} The `loc` object.
+     */
+    getNameLocationInGlobalDirectiveComment(sourceCode, comment, name) {
+        const namePattern = new RegExp(`[\\s,]${escapeRegExp(name)}(?:$|[\\s,:])`, "gu");
+
+        // To ignore the first text "global".
+        namePattern.lastIndex = comment.value.indexOf("global") + 6;
+
+        // Search a given variable name.
+        const match = namePattern.exec(comment.value);
+
+        // Convert the index to loc.
+        const start = sourceCode.getLocFromIndex(
+            comment.range[0] +
+            "/*".length +
+            (match ? match.index + 1 : 0)
+        );
+        const end = {
+            line: start.line,
+            column: start.column + (match ? name.length : 1)
+        };
+
+        return { start, end };
+    },
+
+    /**
+     * Determines whether the given raw string contains an octal escape sequence
+     * or a non-octal decimal escape sequence ("\8", "\9").
+     *
+     * "\1", "\2" ... "\7", "\8", "\9"
+     * "\00", "\01" ... "\07", "\08", "\09"
+     *
+     * "\0", when not followed by a digit, is not an octal escape sequence.
+     * @param {string} rawString A string in its raw representation.
+     * @returns {boolean} `true` if the string contains at least one octal escape sequence
+     * or at least one non-octal decimal escape sequence.
+     */
+    hasOctalOrNonOctalDecimalEscapeSequence(rawString) {
+        return OCTAL_OR_NON_OCTAL_DECIMAL_ESCAPE_PATTERN.test(rawString);
+    },
+
+    /**
+     * Determines whether the given node is a template literal without expressions.
+     * @param {ASTNode} node Node to check.
+     * @returns {boolean} True if the node is a template literal without expressions.
+     */
+    isStaticTemplateLiteral(node) {
+        return node.type === "TemplateLiteral" && node.expressions.length === 0;
+    },
+
+    isReferenceToGlobalVariable,
+    isLogicalExpression,
+    isCoalesceExpression,
+    isMixedLogicalAndCoalesceExpressions,
+    isNullLiteral,
+    getStaticStringValue,
+    getStaticPropertyName,
+    skipChainExpression,
+    isSpecificId,
+    isSpecificMemberAccess,
+    equalLiteralValue,
+    isSameReference,
+    isLogicalAssignmentOperator,
+    getSwitchCaseColonToken,
+    getModuleExportName,
+    isConstant,
+    isTopLevelExpressionStatement,
+    isDirective,
+    isStartOfExpressionStatement,
+    needsPrecedingSemicolon
+};
Index: frontend/node_modules/eslint/lib/rules/utils/fix-tracker.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/utils/fix-tracker.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/utils/fix-tracker.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,114 @@
+/**
+ * @fileoverview Helper class to aid in constructing fix commands.
+ * @author Alan Pierce
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./ast-utils");
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * A helper class to combine fix options into a fix command. Currently, it
+ * exposes some "retain" methods that extend the range of the text being
+ * replaced so that other fixes won't touch that region in the same pass.
+ */
+class FixTracker {
+
+    /**
+     * Create a new FixTracker.
+     * @param {ruleFixer} fixer A ruleFixer instance.
+     * @param {SourceCode} sourceCode A SourceCode object for the current code.
+     */
+    constructor(fixer, sourceCode) {
+        this.fixer = fixer;
+        this.sourceCode = sourceCode;
+        this.retainedRange = null;
+    }
+
+    /**
+     * Mark the given range as "retained", meaning that other fixes may not
+     * may not modify this region in the same pass.
+     * @param {int[]} range The range to retain.
+     * @returns {FixTracker} The same RuleFixer, for chained calls.
+     */
+    retainRange(range) {
+        this.retainedRange = range;
+        return this;
+    }
+
+    /**
+     * Given a node, find the function containing it (or the entire program) and
+     * mark it as retained, meaning that other fixes may not modify it in this
+     * pass. This is useful for avoiding conflicts in fixes that modify control
+     * flow.
+     * @param {ASTNode} node The node to use as a starting point.
+     * @returns {FixTracker} The same RuleFixer, for chained calls.
+     */
+    retainEnclosingFunction(node) {
+        const functionNode = astUtils.getUpperFunction(node);
+
+        return this.retainRange(functionNode ? functionNode.range : this.sourceCode.ast.range);
+    }
+
+    /**
+     * Given a node or token, find the token before and afterward, and mark that
+     * range as retained, meaning that other fixes may not modify it in this
+     * pass. This is useful for avoiding conflicts in fixes that make a small
+     * change to the code where the AST should not be changed.
+     * @param {ASTNode|Token} nodeOrToken The node or token to use as a starting
+     *      point. The token to the left and right are use in the range.
+     * @returns {FixTracker} The same RuleFixer, for chained calls.
+     */
+    retainSurroundingTokens(nodeOrToken) {
+        const tokenBefore = this.sourceCode.getTokenBefore(nodeOrToken) || nodeOrToken;
+        const tokenAfter = this.sourceCode.getTokenAfter(nodeOrToken) || nodeOrToken;
+
+        return this.retainRange([tokenBefore.range[0], tokenAfter.range[1]]);
+    }
+
+    /**
+     * Create a fix command that replaces the given range with the given text,
+     * accounting for any retained ranges.
+     * @param {int[]} range The range to remove in the fix.
+     * @param {string} text The text to insert in place of the range.
+     * @returns {Object} The fix command.
+     */
+    replaceTextRange(range, text) {
+        let actualRange;
+
+        if (this.retainedRange) {
+            actualRange = [
+                Math.min(this.retainedRange[0], range[0]),
+                Math.max(this.retainedRange[1], range[1])
+            ];
+        } else {
+            actualRange = range;
+        }
+
+        return this.fixer.replaceTextRange(
+            actualRange,
+            this.sourceCode.text.slice(actualRange[0], range[0]) +
+                text +
+                this.sourceCode.text.slice(range[1], actualRange[1])
+        );
+    }
+
+    /**
+     * Create a fix command that removes the given node or token, accounting for
+     * any retained ranges.
+     * @param {ASTNode|Token} nodeOrToken The node or token to remove.
+     * @returns {Object} The fix command.
+     */
+    remove(nodeOrToken) {
+        return this.replaceTextRange(nodeOrToken.range, "");
+    }
+}
+
+module.exports = FixTracker;
Index: frontend/node_modules/eslint/lib/rules/utils/keywords.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/utils/keywords.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/utils/keywords.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,67 @@
+/**
+ * @fileoverview A shared list of ES3 keywords.
+ * @author Josh Perez
+ */
+"use strict";
+
+module.exports = [
+    "abstract",
+    "boolean",
+    "break",
+    "byte",
+    "case",
+    "catch",
+    "char",
+    "class",
+    "const",
+    "continue",
+    "debugger",
+    "default",
+    "delete",
+    "do",
+    "double",
+    "else",
+    "enum",
+    "export",
+    "extends",
+    "false",
+    "final",
+    "finally",
+    "float",
+    "for",
+    "function",
+    "goto",
+    "if",
+    "implements",
+    "import",
+    "in",
+    "instanceof",
+    "int",
+    "interface",
+    "long",
+    "native",
+    "new",
+    "null",
+    "package",
+    "private",
+    "protected",
+    "public",
+    "return",
+    "short",
+    "static",
+    "super",
+    "switch",
+    "synchronized",
+    "this",
+    "throw",
+    "throws",
+    "transient",
+    "true",
+    "try",
+    "typeof",
+    "var",
+    "void",
+    "volatile",
+    "while",
+    "with"
+];
Index: frontend/node_modules/eslint/lib/rules/utils/lazy-loading-rule-map.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/utils/lazy-loading-rule-map.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/utils/lazy-loading-rule-map.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,115 @@
+/**
+ * @fileoverview `Map` to load rules lazily.
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+const debug = require("debug")("eslint:rules");
+
+/** @typedef {import("./types").Rule} Rule */
+
+/**
+ * The `Map` object that loads each rule when it's accessed.
+ * @example
+ * const rules = new LazyLoadingRuleMap([
+ *     ["eqeqeq", () => require("eqeqeq")],
+ *     ["semi", () => require("semi")],
+ *     ["no-unused-vars", () => require("no-unused-vars")]
+ * ]);
+ *
+ * rules.get("semi"); // call `() => require("semi")` here.
+ *
+ * @extends {Map<string, () => Rule>}
+ */
+class LazyLoadingRuleMap extends Map {
+
+    /**
+     * Initialize this map.
+     * @param {Array<[string, function(): Rule]>} loaders The rule loaders.
+     */
+    constructor(loaders) {
+        let remaining = loaders.length;
+
+        super(
+            debug.enabled
+                ? loaders.map(([ruleId, load]) => {
+                    let cache = null;
+
+                    return [
+                        ruleId,
+                        () => {
+                            if (!cache) {
+                                debug("Loading rule %o (remaining=%d)", ruleId, --remaining);
+                                cache = load();
+                            }
+                            return cache;
+                        }
+                    ];
+                })
+                : loaders
+        );
+
+        // `super(...iterable)` uses `this.set()`, so disable it here.
+        Object.defineProperty(LazyLoadingRuleMap.prototype, "set", {
+            configurable: true,
+            value: void 0
+        });
+    }
+
+    /**
+     * Get a rule.
+     * Each rule will be loaded on the first access.
+     * @param {string} ruleId The rule ID to get.
+     * @returns {Rule|undefined} The rule.
+     */
+    get(ruleId) {
+        const load = super.get(ruleId);
+
+        return load && load();
+    }
+
+    /**
+     * Iterate rules.
+     * @returns {IterableIterator<Rule>} Rules.
+     */
+    *values() {
+        for (const load of super.values()) {
+            yield load();
+        }
+    }
+
+    /**
+     * Iterate rules.
+     * @returns {IterableIterator<[string, Rule]>} Rules.
+     */
+    *entries() {
+        for (const [ruleId, load] of super.entries()) {
+            yield [ruleId, load()];
+        }
+    }
+
+    /**
+     * Call a function with each rule.
+     * @param {Function} callbackFn The callback function.
+     * @param {any} [thisArg] The object to pass to `this` of the callback function.
+     * @returns {void}
+     */
+    forEach(callbackFn, thisArg) {
+        for (const [ruleId, load] of super.entries()) {
+            callbackFn.call(thisArg, load(), ruleId, this);
+        }
+    }
+}
+
+// Forbid mutation.
+Object.defineProperties(LazyLoadingRuleMap.prototype, {
+    clear: { configurable: true, value: void 0 },
+    delete: { configurable: true, value: void 0 },
+    [Symbol.iterator]: {
+        configurable: true,
+        writable: true,
+        value: LazyLoadingRuleMap.prototype.entries
+    }
+});
+
+module.exports = { LazyLoadingRuleMap };
Index: frontend/node_modules/eslint/lib/rules/utils/patterns/letters.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/utils/patterns/letters.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/utils/patterns/letters.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,36 @@
+/**
+ * @fileoverview Pattern for detecting any letter (even letters outside of ASCII).
+ * NOTE: This file was generated using this script in JSCS based on the Unicode 7.0.0 standard: https://github.com/jscs-dev/node-jscs/blob/f5ed14427deb7e7aac84f3056a5aab2d9f3e563e/publish/helpers/generate-patterns.js
+ * Do not edit this file by hand-- please use https://github.com/mathiasbynens/regenerate to regenerate the regular expression exported from this file.
+ * @author Kevin Partington
+ * @license MIT License (from JSCS). See below.
+ */
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright 2013-2016 Dulin Marat and other contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+"use strict";
+
+module.exports = 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Index: frontend/node_modules/eslint/lib/rules/utils/regular-expressions.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/utils/regular-expressions.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/utils/regular-expressions.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,42 @@
+/**
+ * @fileoverview Common utils for regular expressions.
+ * @author Josh Goldberg
+ * @author Toru Nagashima
+ */
+
+"use strict";
+
+const { RegExpValidator } = require("@eslint-community/regexpp");
+
+const REGEXPP_LATEST_ECMA_VERSION = 2024;
+
+/**
+ * Checks if the given regular expression pattern would be valid with the `u` flag.
+ * @param {number} ecmaVersion ECMAScript version to parse in.
+ * @param {string} pattern The regular expression pattern to verify.
+ * @returns {boolean} `true` if the pattern would be valid with the `u` flag.
+ * `false` if the pattern would be invalid with the `u` flag or the configured
+ * ecmaVersion doesn't support the `u` flag.
+ */
+function isValidWithUnicodeFlag(ecmaVersion, pattern) {
+    if (ecmaVersion <= 5) { // ecmaVersion <= 5 doesn't support the 'u' flag
+        return false;
+    }
+
+    const validator = new RegExpValidator({
+        ecmaVersion: Math.min(ecmaVersion, REGEXPP_LATEST_ECMA_VERSION)
+    });
+
+    try {
+        validator.validatePattern(pattern, void 0, void 0, { unicode: /* uFlag = */ true });
+    } catch {
+        return false;
+    }
+
+    return true;
+}
+
+module.exports = {
+    isValidWithUnicodeFlag,
+    REGEXPP_LATEST_ECMA_VERSION
+};
Index: frontend/node_modules/eslint/lib/rules/utils/unicode/index.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/utils/unicode/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/utils/unicode/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,11 @@
+/**
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+module.exports = {
+    isCombiningCharacter: require("./is-combining-character"),
+    isEmojiModifier: require("./is-emoji-modifier"),
+    isRegionalIndicatorSymbol: require("./is-regional-indicator-symbol"),
+    isSurrogatePair: require("./is-surrogate-pair")
+};
Index: frontend/node_modules/eslint/lib/rules/utils/unicode/is-combining-character.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/utils/unicode/is-combining-character.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/utils/unicode/is-combining-character.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,13 @@
+/**
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+/**
+ * Check whether a given character is a combining mark or not.
+ * @param {number} codePoint The character code to check.
+ * @returns {boolean} `true` if the character belongs to the category, any of `Mc`, `Me`, and `Mn`.
+ */
+module.exports = function isCombiningCharacter(codePoint) {
+    return /^[\p{Mc}\p{Me}\p{Mn}]$/u.test(String.fromCodePoint(codePoint));
+};
Index: frontend/node_modules/eslint/lib/rules/utils/unicode/is-emoji-modifier.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/utils/unicode/is-emoji-modifier.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/utils/unicode/is-emoji-modifier.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,13 @@
+/**
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+/**
+ * Check whether a given character is an emoji modifier.
+ * @param {number} code The character code to check.
+ * @returns {boolean} `true` if the character is an emoji modifier.
+ */
+module.exports = function isEmojiModifier(code) {
+    return code >= 0x1F3FB && code <= 0x1F3FF;
+};
Index: frontend/node_modules/eslint/lib/rules/utils/unicode/is-regional-indicator-symbol.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/utils/unicode/is-regional-indicator-symbol.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/utils/unicode/is-regional-indicator-symbol.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,13 @@
+/**
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+/**
+ * Check whether a given character is a regional indicator symbol.
+ * @param {number} code The character code to check.
+ * @returns {boolean} `true` if the character is a regional indicator symbol.
+ */
+module.exports = function isRegionalIndicatorSymbol(code) {
+    return code >= 0x1F1E6 && code <= 0x1F1FF;
+};
Index: frontend/node_modules/eslint/lib/rules/utils/unicode/is-surrogate-pair.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/utils/unicode/is-surrogate-pair.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/utils/unicode/is-surrogate-pair.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,14 @@
+/**
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+/**
+ * Check whether given two characters are a surrogate pair.
+ * @param {number} lead The code of the lead character.
+ * @param {number} tail The code of the tail character.
+ * @returns {boolean} `true` if the character pair is a surrogate pair.
+ */
+module.exports = function isSurrogatePair(lead, tail) {
+    return lead >= 0xD800 && lead < 0xDC00 && tail >= 0xDC00 && tail < 0xE000;
+};
Index: frontend/node_modules/eslint/lib/rules/valid-jsdoc.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/valid-jsdoc.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/valid-jsdoc.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,516 @@
+/**
+ * @fileoverview Validates JSDoc comments are syntactically correct
+ * @author Nicholas C. Zakas
+ * @deprecated in ESLint v5.10.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const doctrine = require("doctrine");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Enforce valid JSDoc comments",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/valid-jsdoc"
+        },
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    prefer: {
+                        type: "object",
+                        additionalProperties: {
+                            type: "string"
+                        }
+                    },
+                    preferType: {
+                        type: "object",
+                        additionalProperties: {
+                            type: "string"
+                        }
+                    },
+                    requireReturn: {
+                        type: "boolean",
+                        default: true
+                    },
+                    requireParamDescription: {
+                        type: "boolean",
+                        default: true
+                    },
+                    requireReturnDescription: {
+                        type: "boolean",
+                        default: true
+                    },
+                    matchDescription: {
+                        type: "string"
+                    },
+                    requireReturnType: {
+                        type: "boolean",
+                        default: true
+                    },
+                    requireParamType: {
+                        type: "boolean",
+                        default: true
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "code",
+        messages: {
+            unexpectedTag: "Unexpected @{{title}} tag; function has no return statement.",
+            expected: "Expected JSDoc for '{{name}}' but found '{{jsdocName}}'.",
+            use: "Use @{{name}} instead.",
+            useType: "Use '{{expectedTypeName}}' instead of '{{currentTypeName}}'.",
+            syntaxError: "JSDoc syntax error.",
+            missingBrace: "JSDoc type missing brace.",
+            missingParamDesc: "Missing JSDoc parameter description for '{{name}}'.",
+            missingParamType: "Missing JSDoc parameter type for '{{name}}'.",
+            missingReturnType: "Missing JSDoc return type.",
+            missingReturnDesc: "Missing JSDoc return description.",
+            missingReturn: "Missing JSDoc @{{returns}} for function.",
+            missingParam: "Missing JSDoc for parameter '{{name}}'.",
+            duplicateParam: "Duplicate JSDoc parameter '{{name}}'.",
+            unsatisfiedDesc: "JSDoc description does not satisfy the regex pattern."
+        },
+
+        deprecated: true,
+        replacedBy: []
+    },
+
+    create(context) {
+
+        const options = context.options[0] || {},
+            prefer = options.prefer || {},
+            sourceCode = context.sourceCode,
+
+            // these both default to true, so you have to explicitly make them false
+            requireReturn = options.requireReturn !== false,
+            requireParamDescription = options.requireParamDescription !== false,
+            requireReturnDescription = options.requireReturnDescription !== false,
+            requireReturnType = options.requireReturnType !== false,
+            requireParamType = options.requireParamType !== false,
+            preferType = options.preferType || {},
+            checkPreferType = Object.keys(preferType).length !== 0;
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        // Using a stack to store if a function returns or not (handling nested functions)
+        const fns = [];
+
+        /**
+         * Check if node type is a Class
+         * @param {ASTNode} node node to check.
+         * @returns {boolean} True is its a class
+         * @private
+         */
+        function isTypeClass(node) {
+            return node.type === "ClassExpression" || node.type === "ClassDeclaration";
+        }
+
+        /**
+         * When parsing a new function, store it in our function stack.
+         * @param {ASTNode} node A function node to check.
+         * @returns {void}
+         * @private
+         */
+        function startFunction(node) {
+            fns.push({
+                returnPresent: (node.type === "ArrowFunctionExpression" && node.body.type !== "BlockStatement") ||
+                    isTypeClass(node) || node.async
+            });
+        }
+
+        /**
+         * Indicate that return has been found in the current function.
+         * @param {ASTNode} node The return node.
+         * @returns {void}
+         * @private
+         */
+        function addReturn(node) {
+            const functionState = fns[fns.length - 1];
+
+            if (functionState && node.argument !== null) {
+                functionState.returnPresent = true;
+            }
+        }
+
+        /**
+         * Check if return tag type is void or undefined
+         * @param {Object} tag JSDoc tag
+         * @returns {boolean} True if its of type void or undefined
+         * @private
+         */
+        function isValidReturnType(tag) {
+            return tag.type === null || tag.type.name === "void" || tag.type.type === "UndefinedLiteral";
+        }
+
+        /**
+         * Check if type should be validated based on some exceptions
+         * @param {Object} type JSDoc tag
+         * @returns {boolean} True if it can be validated
+         * @private
+         */
+        function canTypeBeValidated(type) {
+            return type !== "UndefinedLiteral" && // {undefined} as there is no name property available.
+                   type !== "NullLiteral" && // {null}
+                   type !== "NullableLiteral" && // {?}
+                   type !== "FunctionType" && // {function(a)}
+                   type !== "AllLiteral"; // {*}
+        }
+
+        /**
+         * Extract the current and expected type based on the input type object
+         * @param {Object} type JSDoc tag
+         * @returns {{currentType: Doctrine.Type, expectedTypeName: string}} The current type annotation and
+         * the expected name of the annotation
+         * @private
+         */
+        function getCurrentExpectedTypes(type) {
+            let currentType;
+
+            if (type.name) {
+                currentType = type;
+            } else if (type.expression) {
+                currentType = type.expression;
+            }
+
+            return {
+                currentType,
+                expectedTypeName: currentType && preferType[currentType.name]
+            };
+        }
+
+        /**
+         * Gets the location of a JSDoc node in a file
+         * @param {Token} jsdocComment The comment that this node is parsed from
+         * @param {{range: number[]}} parsedJsdocNode A tag or other node which was parsed from this comment
+         * @returns {{start: SourceLocation, end: SourceLocation}} The 0-based source location for the tag
+         */
+        function getAbsoluteRange(jsdocComment, parsedJsdocNode) {
+            return {
+                start: sourceCode.getLocFromIndex(jsdocComment.range[0] + 2 + parsedJsdocNode.range[0]),
+                end: sourceCode.getLocFromIndex(jsdocComment.range[0] + 2 + parsedJsdocNode.range[1])
+            };
+        }
+
+        /**
+         * Validate type for a given JSDoc node
+         * @param {Object} jsdocNode JSDoc node
+         * @param {Object} type JSDoc tag
+         * @returns {void}
+         * @private
+         */
+        function validateType(jsdocNode, type) {
+            if (!type || !canTypeBeValidated(type.type)) {
+                return;
+            }
+
+            const typesToCheck = [];
+            let elements = [];
+
+            switch (type.type) {
+                case "TypeApplication": // {Array.<String>}
+                    elements = type.applications[0].type === "UnionType" ? type.applications[0].elements : type.applications;
+                    typesToCheck.push(getCurrentExpectedTypes(type));
+                    break;
+                case "RecordType": // {{20:String}}
+                    elements = type.fields;
+                    break;
+                case "UnionType": // {String|number|Test}
+                case "ArrayType": // {[String, number, Test]}
+                    elements = type.elements;
+                    break;
+                case "FieldType": // Array.<{count: number, votes: number}>
+                    if (type.value) {
+                        typesToCheck.push(getCurrentExpectedTypes(type.value));
+                    }
+                    break;
+                default:
+                    typesToCheck.push(getCurrentExpectedTypes(type));
+            }
+
+            elements.forEach(validateType.bind(null, jsdocNode));
+
+            typesToCheck.forEach(typeToCheck => {
+                if (typeToCheck.expectedTypeName &&
+                    typeToCheck.expectedTypeName !== typeToCheck.currentType.name) {
+                    context.report({
+                        node: jsdocNode,
+                        messageId: "useType",
+                        loc: getAbsoluteRange(jsdocNode, typeToCheck.currentType),
+                        data: {
+                            currentTypeName: typeToCheck.currentType.name,
+                            expectedTypeName: typeToCheck.expectedTypeName
+                        },
+                        fix(fixer) {
+                            return fixer.replaceTextRange(
+                                typeToCheck.currentType.range.map(indexInComment => jsdocNode.range[0] + 2 + indexInComment),
+                                typeToCheck.expectedTypeName
+                            );
+                        }
+                    });
+                }
+            });
+        }
+
+        /**
+         * Validate the JSDoc node and output warnings if anything is wrong.
+         * @param {ASTNode} node The AST node to check.
+         * @returns {void}
+         * @private
+         */
+        function checkJSDoc(node) {
+            const jsdocNode = sourceCode.getJSDocComment(node),
+                functionData = fns.pop(),
+                paramTagsByName = Object.create(null),
+                paramTags = [];
+            let hasReturns = false,
+                returnsTag,
+                hasConstructor = false,
+                isInterface = false,
+                isOverride = false,
+                isAbstract = false;
+
+            // make sure only to validate JSDoc comments
+            if (jsdocNode) {
+                let jsdoc;
+
+                try {
+                    jsdoc = doctrine.parse(jsdocNode.value, {
+                        strict: true,
+                        unwrap: true,
+                        sloppy: true,
+                        range: true
+                    });
+                } catch (ex) {
+
+                    if (/braces/iu.test(ex.message)) {
+                        context.report({ node: jsdocNode, messageId: "missingBrace" });
+                    } else {
+                        context.report({ node: jsdocNode, messageId: "syntaxError" });
+                    }
+
+                    return;
+                }
+
+                jsdoc.tags.forEach(tag => {
+
+                    switch (tag.title.toLowerCase()) {
+
+                        case "param":
+                        case "arg":
+                        case "argument":
+                            paramTags.push(tag);
+                            break;
+
+                        case "return":
+                        case "returns":
+                            hasReturns = true;
+                            returnsTag = tag;
+                            break;
+
+                        case "constructor":
+                        case "class":
+                            hasConstructor = true;
+                            break;
+
+                        case "override":
+                        case "inheritdoc":
+                            isOverride = true;
+                            break;
+
+                        case "abstract":
+                        case "virtual":
+                            isAbstract = true;
+                            break;
+
+                        case "interface":
+                            isInterface = true;
+                            break;
+
+                        // no default
+                    }
+
+                    // check tag preferences
+                    if (Object.prototype.hasOwnProperty.call(prefer, tag.title) && tag.title !== prefer[tag.title]) {
+                        const entireTagRange = getAbsoluteRange(jsdocNode, tag);
+
+                        context.report({
+                            node: jsdocNode,
+                            messageId: "use",
+                            loc: {
+                                start: entireTagRange.start,
+                                end: {
+                                    line: entireTagRange.start.line,
+                                    column: entireTagRange.start.column + `@${tag.title}`.length
+                                }
+                            },
+                            data: { name: prefer[tag.title] },
+                            fix(fixer) {
+                                return fixer.replaceTextRange(
+                                    [
+                                        jsdocNode.range[0] + tag.range[0] + 3,
+                                        jsdocNode.range[0] + tag.range[0] + tag.title.length + 3
+                                    ],
+                                    prefer[tag.title]
+                                );
+                            }
+                        });
+                    }
+
+                    // validate the types
+                    if (checkPreferType && tag.type) {
+                        validateType(jsdocNode, tag.type);
+                    }
+                });
+
+                paramTags.forEach(param => {
+                    if (requireParamType && !param.type) {
+                        context.report({
+                            node: jsdocNode,
+                            messageId: "missingParamType",
+                            loc: getAbsoluteRange(jsdocNode, param),
+                            data: { name: param.name }
+                        });
+                    }
+                    if (!param.description && requireParamDescription) {
+                        context.report({
+                            node: jsdocNode,
+                            messageId: "missingParamDesc",
+                            loc: getAbsoluteRange(jsdocNode, param),
+                            data: { name: param.name }
+                        });
+                    }
+                    if (paramTagsByName[param.name]) {
+                        context.report({
+                            node: jsdocNode,
+                            messageId: "duplicateParam",
+                            loc: getAbsoluteRange(jsdocNode, param),
+                            data: { name: param.name }
+                        });
+                    } else if (!param.name.includes(".")) {
+                        paramTagsByName[param.name] = param;
+                    }
+                });
+
+                if (hasReturns) {
+                    if (!requireReturn && !functionData.returnPresent && (returnsTag.type === null || !isValidReturnType(returnsTag)) && !isAbstract) {
+                        context.report({
+                            node: jsdocNode,
+                            messageId: "unexpectedTag",
+                            loc: getAbsoluteRange(jsdocNode, returnsTag),
+                            data: {
+                                title: returnsTag.title
+                            }
+                        });
+                    } else {
+                        if (requireReturnType && !returnsTag.type) {
+                            context.report({ node: jsdocNode, messageId: "missingReturnType" });
+                        }
+
+                        if (!isValidReturnType(returnsTag) && !returnsTag.description && requireReturnDescription) {
+                            context.report({ node: jsdocNode, messageId: "missingReturnDesc" });
+                        }
+                    }
+                }
+
+                // check for functions missing @returns
+                if (!isOverride && !hasReturns && !hasConstructor && !isInterface &&
+                    node.parent.kind !== "get" && node.parent.kind !== "constructor" &&
+                    node.parent.kind !== "set" && !isTypeClass(node)) {
+                    if (requireReturn || (functionData.returnPresent && !node.async)) {
+                        context.report({
+                            node: jsdocNode,
+                            messageId: "missingReturn",
+                            data: {
+                                returns: prefer.returns || "returns"
+                            }
+                        });
+                    }
+                }
+
+                // check the parameters
+                const jsdocParamNames = Object.keys(paramTagsByName);
+
+                if (node.params) {
+                    node.params.forEach((param, paramsIndex) => {
+                        const bindingParam = param.type === "AssignmentPattern"
+                            ? param.left
+                            : param;
+
+                        // TODO(nzakas): Figure out logical things to do with destructured, default, rest params
+                        if (bindingParam.type === "Identifier") {
+                            const name = bindingParam.name;
+
+                            if (jsdocParamNames[paramsIndex] && (name !== jsdocParamNames[paramsIndex])) {
+                                context.report({
+                                    node: jsdocNode,
+                                    messageId: "expected",
+                                    loc: getAbsoluteRange(jsdocNode, paramTagsByName[jsdocParamNames[paramsIndex]]),
+                                    data: {
+                                        name,
+                                        jsdocName: jsdocParamNames[paramsIndex]
+                                    }
+                                });
+                            } else if (!paramTagsByName[name] && !isOverride) {
+                                context.report({
+                                    node: jsdocNode,
+                                    messageId: "missingParam",
+                                    data: {
+                                        name
+                                    }
+                                });
+                            }
+                        }
+                    });
+                }
+
+                if (options.matchDescription) {
+                    const regex = new RegExp(options.matchDescription, "u");
+
+                    if (!regex.test(jsdoc.description)) {
+                        context.report({ node: jsdocNode, messageId: "unsatisfiedDesc" });
+                    }
+                }
+
+            }
+
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            ArrowFunctionExpression: startFunction,
+            FunctionExpression: startFunction,
+            FunctionDeclaration: startFunction,
+            ClassExpression: startFunction,
+            ClassDeclaration: startFunction,
+            "ArrowFunctionExpression:exit": checkJSDoc,
+            "FunctionExpression:exit": checkJSDoc,
+            "FunctionDeclaration:exit": checkJSDoc,
+            "ClassExpression:exit": checkJSDoc,
+            "ClassDeclaration:exit": checkJSDoc,
+            ReturnStatement: addReturn
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/valid-typeof.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/valid-typeof.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/valid-typeof.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,127 @@
+/**
+ * @fileoverview Ensures that the results of typeof are compared against a valid string
+ * @author Ian Christian Myers
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "problem",
+
+        docs: {
+            description: "Enforce comparing `typeof` expressions against valid strings",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/valid-typeof"
+        },
+
+        hasSuggestions: true,
+
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    requireStringLiterals: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            invalidValue: "Invalid typeof comparison value.",
+            notString: "Typeof comparisons should be to string literals.",
+            suggestString: 'Use `"{{type}}"` instead of `{{type}}`.'
+        }
+    },
+
+    create(context) {
+
+        const VALID_TYPES = new Set(["symbol", "undefined", "object", "boolean", "number", "string", "function", "bigint"]),
+            OPERATORS = new Set(["==", "===", "!=", "!=="]);
+        const sourceCode = context.sourceCode;
+        const requireStringLiterals = context.options[0] && context.options[0].requireStringLiterals;
+
+        let globalScope;
+
+        /**
+         * Checks whether the given node represents a reference to a global variable that is not declared in the source code.
+         * These identifiers will be allowed, as it is assumed that user has no control over the names of external global variables.
+         * @param {ASTNode} node `Identifier` node to check.
+         * @returns {boolean} `true` if the node is a reference to a global variable.
+         */
+        function isReferenceToGlobalVariable(node) {
+            const variable = globalScope.set.get(node.name);
+
+            return variable && variable.defs.length === 0 &&
+                variable.references.some(ref => ref.identifier === node);
+        }
+
+        /**
+         * Determines whether a node is a typeof expression.
+         * @param {ASTNode} node The node
+         * @returns {boolean} `true` if the node is a typeof expression
+         */
+        function isTypeofExpression(node) {
+            return node.type === "UnaryExpression" && node.operator === "typeof";
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+
+            Program(node) {
+                globalScope = sourceCode.getScope(node);
+            },
+
+            UnaryExpression(node) {
+                if (isTypeofExpression(node)) {
+                    const { parent } = node;
+
+                    if (parent.type === "BinaryExpression" && OPERATORS.has(parent.operator)) {
+                        const sibling = parent.left === node ? parent.right : parent.left;
+
+                        if (sibling.type === "Literal" || astUtils.isStaticTemplateLiteral(sibling)) {
+                            const value = sibling.type === "Literal" ? sibling.value : sibling.quasis[0].value.cooked;
+
+                            if (!VALID_TYPES.has(value)) {
+                                context.report({ node: sibling, messageId: "invalidValue" });
+                            }
+                        } else if (sibling.type === "Identifier" && sibling.name === "undefined" && isReferenceToGlobalVariable(sibling)) {
+                            context.report({
+                                node: sibling,
+                                messageId: requireStringLiterals ? "notString" : "invalidValue",
+                                suggest: [
+                                    {
+                                        messageId: "suggestString",
+                                        data: { type: "undefined" },
+                                        fix(fixer) {
+                                            return fixer.replaceText(sibling, '"undefined"');
+                                        }
+                                    }
+                                ]
+                            });
+                        } else if (requireStringLiterals && !isTypeofExpression(sibling)) {
+                            context.report({ node: sibling, messageId: "notString" });
+                        }
+                    }
+                }
+            }
+
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/vars-on-top.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/vars-on-top.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/vars-on-top.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,157 @@
+/**
+ * @fileoverview Rule to enforce var declarations are only at the top of a function.
+ * @author Danny Fritz
+ * @author Gyandeep Singh
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: "Require `var` declarations be placed at the top of their containing scope",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/vars-on-top"
+        },
+
+        schema: [],
+        messages: {
+            top: "All 'var' declarations must be at the top of the function scope."
+        }
+    },
+
+    create(context) {
+
+        //--------------------------------------------------------------------------
+        // Helpers
+        //--------------------------------------------------------------------------
+
+        /**
+         * Has AST suggesting a directive.
+         * @param {ASTNode} node any node
+         * @returns {boolean} whether the given node structurally represents a directive
+         */
+        function looksLikeDirective(node) {
+            return node.type === "ExpressionStatement" &&
+                node.expression.type === "Literal" && typeof node.expression.value === "string";
+        }
+
+        /**
+         * Check to see if its a ES6 import declaration
+         * @param {ASTNode} node any node
+         * @returns {boolean} whether the given node represents a import declaration
+         */
+        function looksLikeImport(node) {
+            return node.type === "ImportDeclaration" || node.type === "ImportSpecifier" ||
+                node.type === "ImportDefaultSpecifier" || node.type === "ImportNamespaceSpecifier";
+        }
+
+        /**
+         * Checks whether a given node is a variable declaration or not.
+         * @param {ASTNode} node any node
+         * @returns {boolean} `true` if the node is a variable declaration.
+         */
+        function isVariableDeclaration(node) {
+            return (
+                node.type === "VariableDeclaration" ||
+                (
+                    node.type === "ExportNamedDeclaration" &&
+                    node.declaration &&
+                    node.declaration.type === "VariableDeclaration"
+                )
+            );
+        }
+
+        /**
+         * Checks whether this variable is on top of the block body
+         * @param {ASTNode} node The node to check
+         * @param {ASTNode[]} statements collection of ASTNodes for the parent node block
+         * @returns {boolean} True if var is on top otherwise false
+         */
+        function isVarOnTop(node, statements) {
+            const l = statements.length;
+            let i = 0;
+
+            // Skip over directives and imports. Static blocks don't have either.
+            if (node.parent.type !== "StaticBlock") {
+                for (; i < l; ++i) {
+                    if (!looksLikeDirective(statements[i]) && !looksLikeImport(statements[i])) {
+                        break;
+                    }
+                }
+            }
+
+            for (; i < l; ++i) {
+                if (!isVariableDeclaration(statements[i])) {
+                    return false;
+                }
+                if (statements[i] === node) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        /**
+         * Checks whether variable is on top at the global level
+         * @param {ASTNode} node The node to check
+         * @param {ASTNode} parent Parent of the node
+         * @returns {void}
+         */
+        function globalVarCheck(node, parent) {
+            if (!isVarOnTop(node, parent.body)) {
+                context.report({ node, messageId: "top" });
+            }
+        }
+
+        /**
+         * Checks whether variable is on top at functional block scope level
+         * @param {ASTNode} node The node to check
+         * @returns {void}
+         */
+        function blockScopeVarCheck(node) {
+            const { parent } = node;
+
+            if (
+                parent.type === "BlockStatement" &&
+                /Function/u.test(parent.parent.type) &&
+                isVarOnTop(node, parent.body)
+            ) {
+                return;
+            }
+
+            if (
+                parent.type === "StaticBlock" &&
+                isVarOnTop(node, parent.body)
+            ) {
+                return;
+            }
+
+            context.report({ node, messageId: "top" });
+        }
+
+        //--------------------------------------------------------------------------
+        // Public API
+        //--------------------------------------------------------------------------
+
+        return {
+            "VariableDeclaration[kind='var']"(node) {
+                if (node.parent.type === "ExportNamedDeclaration") {
+                    globalVarCheck(node.parent, node.parent.parent);
+                } else if (node.parent.type === "Program") {
+                    globalVarCheck(node, node.parent);
+                } else {
+                    blockScopeVarCheck(node);
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/wrap-iife.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/wrap-iife.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/wrap-iife.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,207 @@
+/**
+ * @fileoverview Rule to flag when IIFE is not wrapped in parens
+ * @author Ilya Volodin
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+const eslintUtils = require("@eslint-community/eslint-utils");
+
+//----------------------------------------------------------------------
+// Helpers
+//----------------------------------------------------------------------
+
+/**
+ * Check if the given node is callee of a `NewExpression` node
+ * @param {ASTNode} node node to check
+ * @returns {boolean} True if the node is callee of a `NewExpression` node
+ * @private
+ */
+function isCalleeOfNewExpression(node) {
+    const maybeCallee = node.parent.type === "ChainExpression"
+        ? node.parent
+        : node;
+
+    return (
+        maybeCallee.parent.type === "NewExpression" &&
+        maybeCallee.parent.callee === maybeCallee
+    );
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require parentheses around immediate `function` invocations",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/wrap-iife"
+        },
+
+        schema: [
+            {
+                enum: ["outside", "inside", "any"]
+            },
+            {
+                type: "object",
+                properties: {
+                    functionPrototypeMethods: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "code",
+        messages: {
+            wrapInvocation: "Wrap an immediate function invocation in parentheses.",
+            wrapExpression: "Wrap only the function expression in parens.",
+            moveInvocation: "Move the invocation into the parens that contain the function."
+        }
+    },
+
+    create(context) {
+
+        const style = context.options[0] || "outside";
+        const includeFunctionPrototypeMethods = context.options[1] && context.options[1].functionPrototypeMethods;
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Check if the node is wrapped in any (). All parens count: grouping parens and parens for constructs such as if()
+         * @param {ASTNode} node node to evaluate
+         * @returns {boolean} True if it is wrapped in any parens
+         * @private
+         */
+        function isWrappedInAnyParens(node) {
+            return astUtils.isParenthesised(sourceCode, node);
+        }
+
+        /**
+         * Check if the node is wrapped in grouping (). Parens for constructs such as if() don't count
+         * @param {ASTNode} node node to evaluate
+         * @returns {boolean} True if it is wrapped in grouping parens
+         * @private
+         */
+        function isWrappedInGroupingParens(node) {
+            return eslintUtils.isParenthesized(1, node, sourceCode);
+        }
+
+        /**
+         * Get the function node from an IIFE
+         * @param {ASTNode} node node to evaluate
+         * @returns {ASTNode} node that is the function expression of the given IIFE, or null if none exist
+         */
+        function getFunctionNodeFromIIFE(node) {
+            const callee = astUtils.skipChainExpression(node.callee);
+
+            if (callee.type === "FunctionExpression") {
+                return callee;
+            }
+
+            if (includeFunctionPrototypeMethods &&
+                callee.type === "MemberExpression" &&
+                callee.object.type === "FunctionExpression" &&
+                (astUtils.getStaticPropertyName(callee) === "call" || astUtils.getStaticPropertyName(callee) === "apply")
+            ) {
+                return callee.object;
+            }
+
+            return null;
+        }
+
+
+        return {
+            CallExpression(node) {
+                const innerNode = getFunctionNodeFromIIFE(node);
+
+                if (!innerNode) {
+                    return;
+                }
+
+                const isCallExpressionWrapped = isWrappedInAnyParens(node),
+                    isFunctionExpressionWrapped = isWrappedInAnyParens(innerNode);
+
+                if (!isCallExpressionWrapped && !isFunctionExpressionWrapped) {
+                    context.report({
+                        node,
+                        messageId: "wrapInvocation",
+                        fix(fixer) {
+                            const nodeToSurround = style === "inside" ? innerNode : node;
+
+                            return fixer.replaceText(nodeToSurround, `(${sourceCode.getText(nodeToSurround)})`);
+                        }
+                    });
+                } else if (style === "inside" && !isFunctionExpressionWrapped) {
+                    context.report({
+                        node,
+                        messageId: "wrapExpression",
+                        fix(fixer) {
+
+                            // The outer call expression will always be wrapped at this point.
+
+                            if (isWrappedInGroupingParens(node) && !isCalleeOfNewExpression(node)) {
+
+                                /*
+                                 * Parenthesize the function expression and remove unnecessary grouping parens around the call expression.
+                                 * Replace the range between the end of the function expression and the end of the call expression.
+                                 * for example, in `(function(foo) {}(bar))`, the range `(bar))` should get replaced with `)(bar)`.
+                                 */
+
+                                const parenAfter = sourceCode.getTokenAfter(node);
+
+                                return fixer.replaceTextRange(
+                                    [innerNode.range[1], parenAfter.range[1]],
+                                    `)${sourceCode.getText().slice(innerNode.range[1], parenAfter.range[0])}`
+                                );
+                            }
+
+                            /*
+                             * Call expression is wrapped in mandatory parens such as if(), or in necessary grouping parens.
+                             * These parens cannot be removed, so just parenthesize the function expression.
+                             */
+
+                            return fixer.replaceText(innerNode, `(${sourceCode.getText(innerNode)})`);
+                        }
+                    });
+                } else if (style === "outside" && !isCallExpressionWrapped) {
+                    context.report({
+                        node,
+                        messageId: "moveInvocation",
+                        fix(fixer) {
+
+                            /*
+                             * The inner function expression will always be wrapped at this point.
+                             * It's only necessary to replace the range between the end of the function expression
+                             * and the call expression. For example, in `(function(foo) {})(bar)`, the range `)(bar)`
+                             * should get replaced with `(bar))`.
+                             */
+                            const parenAfter = sourceCode.getTokenAfter(innerNode);
+
+                            return fixer.replaceTextRange(
+                                [parenAfter.range[0], node.range[1]],
+                                `${sourceCode.getText().slice(parenAfter.range[1], node.range[1])})`
+                            );
+                        }
+                    });
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/wrap-regex.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/wrap-regex.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/wrap-regex.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,61 @@
+/**
+ * @fileoverview Rule to flag when regex literals are not wrapped in parens
+ * @author Matt DuVall <http://www.mattduvall.com>
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require parenthesis around regex literals",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/wrap-regex"
+        },
+
+        schema: [],
+        fixable: "code",
+
+        messages: {
+            requireParens: "Wrap the regexp literal in parens to disambiguate the slash."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        return {
+
+            Literal(node) {
+                const token = sourceCode.getFirstToken(node),
+                    nodeType = token.type;
+
+                if (nodeType === "RegularExpression") {
+                    const beforeToken = sourceCode.getTokenBefore(node);
+                    const afterToken = sourceCode.getTokenAfter(node);
+                    const { parent } = node;
+
+                    if (parent.type === "MemberExpression" && parent.object === node &&
+                        !(beforeToken && beforeToken.value === "(" && afterToken && afterToken.value === ")")) {
+                        context.report({
+                            node,
+                            messageId: "requireParens",
+                            fix: fixer => fixer.replaceText(node, `(${sourceCode.getText(node)})`)
+                        });
+                    }
+                }
+            }
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/yield-star-spacing.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/yield-star-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/yield-star-spacing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,130 @@
+/**
+ * @fileoverview Rule to check the spacing around the * in yield* expressions.
+ * @author Bryan Smith
+ * @deprecated in ESLint v8.53.0
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        deprecated: true,
+        replacedBy: [],
+        type: "layout",
+
+        docs: {
+            description: "Require or disallow spacing around the `*` in `yield*` expressions",
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/yield-star-spacing"
+        },
+
+        fixable: "whitespace",
+
+        schema: [
+            {
+                oneOf: [
+                    {
+                        enum: ["before", "after", "both", "neither"]
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            before: { type: "boolean" },
+                            after: { type: "boolean" }
+                        },
+                        additionalProperties: false
+                    }
+                ]
+            }
+        ],
+        messages: {
+            missingBefore: "Missing space before *.",
+            missingAfter: "Missing space after *.",
+            unexpectedBefore: "Unexpected space before *.",
+            unexpectedAfter: "Unexpected space after *."
+        }
+    },
+
+    create(context) {
+        const sourceCode = context.sourceCode;
+
+        const mode = (function(option) {
+            if (!option || typeof option === "string") {
+                return {
+                    before: { before: true, after: false },
+                    after: { before: false, after: true },
+                    both: { before: true, after: true },
+                    neither: { before: false, after: false }
+                }[option || "after"];
+            }
+            return option;
+        }(context.options[0]));
+
+        /**
+         * Checks the spacing between two tokens before or after the star token.
+         * @param {string} side Either "before" or "after".
+         * @param {Token} leftToken `function` keyword token if side is "before", or
+         *     star token if side is "after".
+         * @param {Token} rightToken Star token if side is "before", or identifier
+         *     token if side is "after".
+         * @returns {void}
+         */
+        function checkSpacing(side, leftToken, rightToken) {
+            if (sourceCode.isSpaceBetweenTokens(leftToken, rightToken) !== mode[side]) {
+                const after = leftToken.value === "*";
+                const spaceRequired = mode[side];
+                const node = after ? leftToken : rightToken;
+                let messageId = "";
+
+                if (spaceRequired) {
+                    messageId = side === "before" ? "missingBefore" : "missingAfter";
+                } else {
+                    messageId = side === "before" ? "unexpectedBefore" : "unexpectedAfter";
+                }
+
+                context.report({
+                    node,
+                    messageId,
+                    fix(fixer) {
+                        if (spaceRequired) {
+                            if (after) {
+                                return fixer.insertTextAfter(node, " ");
+                            }
+                            return fixer.insertTextBefore(node, " ");
+                        }
+                        return fixer.removeRange([leftToken.range[1], rightToken.range[0]]);
+                    }
+                });
+            }
+        }
+
+        /**
+         * Enforces the spacing around the star if node is a yield* expression.
+         * @param {ASTNode} node A yield expression node.
+         * @returns {void}
+         */
+        function checkExpression(node) {
+            if (!node.delegate) {
+                return;
+            }
+
+            const tokens = sourceCode.getFirstTokens(node, 3);
+            const yieldToken = tokens[0];
+            const starToken = tokens[1];
+            const nextToken = tokens[2];
+
+            checkSpacing("before", yieldToken, starToken);
+            checkSpacing("after", starToken, nextToken);
+        }
+
+        return {
+            YieldExpression: checkExpression
+        };
+
+    }
+};
Index: frontend/node_modules/eslint/lib/rules/yoda.js
===================================================================
--- frontend/node_modules/eslint/lib/rules/yoda.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/rules/yoda.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,353 @@
+/**
+ * @fileoverview Rule to require or disallow yoda comparisons
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//--------------------------------------------------------------------------
+// Requirements
+//--------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//--------------------------------------------------------------------------
+// Helpers
+//--------------------------------------------------------------------------
+
+/**
+ * Determines whether an operator is a comparison operator.
+ * @param {string} operator The operator to check.
+ * @returns {boolean} Whether or not it is a comparison operator.
+ */
+function isComparisonOperator(operator) {
+    return /^(==|===|!=|!==|<|>|<=|>=)$/u.test(operator);
+}
+
+/**
+ * Determines whether an operator is an equality operator.
+ * @param {string} operator The operator to check.
+ * @returns {boolean} Whether or not it is an equality operator.
+ */
+function isEqualityOperator(operator) {
+    return /^(==|===)$/u.test(operator);
+}
+
+/**
+ * Determines whether an operator is one used in a range test.
+ * Allowed operators are `<` and `<=`.
+ * @param {string} operator The operator to check.
+ * @returns {boolean} Whether the operator is used in range tests.
+ */
+function isRangeTestOperator(operator) {
+    return ["<", "<="].includes(operator);
+}
+
+/**
+ * Determines whether a non-Literal node is a negative number that should be
+ * treated as if it were a single Literal node.
+ * @param {ASTNode} node Node to test.
+ * @returns {boolean} True if the node is a negative number that looks like a
+ *                    real literal and should be treated as such.
+ */
+function isNegativeNumericLiteral(node) {
+    return (
+        node.type === "UnaryExpression" &&
+        node.operator === "-" &&
+        node.prefix &&
+        astUtils.isNumericLiteral(node.argument)
+    );
+}
+
+/**
+ * Determines whether a non-Literal node should be treated as a single Literal node.
+ * @param {ASTNode} node Node to test
+ * @returns {boolean} True if the node should be treated as a single Literal node.
+ */
+function looksLikeLiteral(node) {
+    return isNegativeNumericLiteral(node) || astUtils.isStaticTemplateLiteral(node);
+}
+
+/**
+ * Attempts to derive a Literal node from nodes that are treated like literals.
+ * @param {ASTNode} node Node to normalize.
+ * @returns {ASTNode} One of the following options.
+ *  1. The original node if the node is already a Literal
+ *  2. A normalized Literal node with the negative number as the value if the
+ *     node represents a negative number literal.
+ *  3. A normalized Literal node with the string as the value if the node is
+ *     a Template Literal without expression.
+ *  4. Otherwise `null`.
+ */
+function getNormalizedLiteral(node) {
+    if (node.type === "Literal") {
+        return node;
+    }
+
+    if (isNegativeNumericLiteral(node)) {
+        return {
+            type: "Literal",
+            value: -node.argument.value,
+            raw: `-${node.argument.value}`
+        };
+    }
+
+    if (astUtils.isStaticTemplateLiteral(node)) {
+        return {
+            type: "Literal",
+            value: node.quasis[0].value.cooked,
+            raw: node.quasis[0].value.raw
+        };
+    }
+
+    return null;
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../shared/types').Rule} */
+module.exports = {
+    meta: {
+        type: "suggestion",
+
+        docs: {
+            description: 'Require or disallow "Yoda" conditions',
+            recommended: false,
+            url: "https://eslint.org/docs/latest/rules/yoda"
+        },
+
+        schema: [
+            {
+                enum: ["always", "never"]
+            },
+            {
+                type: "object",
+                properties: {
+                    exceptRange: {
+                        type: "boolean",
+                        default: false
+                    },
+                    onlyEquality: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
+        fixable: "code",
+        messages: {
+            expected:
+                "Expected literal to be on the {{expectedSide}} side of {{operator}}."
+        }
+    },
+
+    create(context) {
+
+        // Default to "never" (!always) if no option
+        const always = context.options[0] === "always";
+        const exceptRange =
+            context.options[1] && context.options[1].exceptRange;
+        const onlyEquality =
+            context.options[1] && context.options[1].onlyEquality;
+
+        const sourceCode = context.sourceCode;
+
+        /**
+         * Determines whether node represents a range test.
+         * A range test is a "between" test like `(0 <= x && x < 1)` or an "outside"
+         * test like `(x < 0 || 1 <= x)`. It must be wrapped in parentheses, and
+         * both operators must be `<` or `<=`. Finally, the literal on the left side
+         * must be less than or equal to the literal on the right side so that the
+         * test makes any sense.
+         * @param {ASTNode} node LogicalExpression node to test.
+         * @returns {boolean} Whether node is a range test.
+         */
+        function isRangeTest(node) {
+            const left = node.left,
+                right = node.right;
+
+            /**
+             * Determines whether node is of the form `0 <= x && x < 1`.
+             * @returns {boolean} Whether node is a "between" range test.
+             */
+            function isBetweenTest() {
+                if (node.operator === "&&" && astUtils.isSameReference(left.right, right.left)) {
+                    const leftLiteral = getNormalizedLiteral(left.left);
+                    const rightLiteral = getNormalizedLiteral(right.right);
+
+                    if (leftLiteral === null && rightLiteral === null) {
+                        return false;
+                    }
+
+                    if (rightLiteral === null || leftLiteral === null) {
+                        return true;
+                    }
+
+                    if (leftLiteral.value <= rightLiteral.value) {
+                        return true;
+                    }
+                }
+                return false;
+            }
+
+            /**
+             * Determines whether node is of the form `x < 0 || 1 <= x`.
+             * @returns {boolean} Whether node is an "outside" range test.
+             */
+            function isOutsideTest() {
+                if (node.operator === "||" && astUtils.isSameReference(left.left, right.right)) {
+                    const leftLiteral = getNormalizedLiteral(left.right);
+                    const rightLiteral = getNormalizedLiteral(right.left);
+
+                    if (leftLiteral === null && rightLiteral === null) {
+                        return false;
+                    }
+
+                    if (rightLiteral === null || leftLiteral === null) {
+                        return true;
+                    }
+
+                    if (leftLiteral.value <= rightLiteral.value) {
+                        return true;
+                    }
+                }
+
+                return false;
+            }
+
+            /**
+             * Determines whether node is wrapped in parentheses.
+             * @returns {boolean} Whether node is preceded immediately by an open
+             *                    paren token and followed immediately by a close
+             *                    paren token.
+             */
+            function isParenWrapped() {
+                return astUtils.isParenthesised(sourceCode, node);
+            }
+
+            return (
+                node.type === "LogicalExpression" &&
+                left.type === "BinaryExpression" &&
+                right.type === "BinaryExpression" &&
+                isRangeTestOperator(left.operator) &&
+                isRangeTestOperator(right.operator) &&
+                (isBetweenTest() || isOutsideTest()) &&
+                isParenWrapped()
+            );
+        }
+
+        const OPERATOR_FLIP_MAP = {
+            "===": "===",
+            "!==": "!==",
+            "==": "==",
+            "!=": "!=",
+            "<": ">",
+            ">": "<",
+            "<=": ">=",
+            ">=": "<="
+        };
+
+        /**
+         * Returns a string representation of a BinaryExpression node with its sides/operator flipped around.
+         * @param {ASTNode} node The BinaryExpression node
+         * @returns {string} A string representation of the node with the sides and operator flipped
+         */
+        function getFlippedString(node) {
+            const operatorToken = sourceCode.getFirstTokenBetween(
+                node.left,
+                node.right,
+                token => token.value === node.operator
+            );
+            const lastLeftToken = sourceCode.getTokenBefore(operatorToken);
+            const firstRightToken = sourceCode.getTokenAfter(operatorToken);
+
+            const source = sourceCode.getText();
+
+            const leftText = source.slice(
+                node.range[0],
+                lastLeftToken.range[1]
+            );
+            const textBeforeOperator = source.slice(
+                lastLeftToken.range[1],
+                operatorToken.range[0]
+            );
+            const textAfterOperator = source.slice(
+                operatorToken.range[1],
+                firstRightToken.range[0]
+            );
+            const rightText = source.slice(
+                firstRightToken.range[0],
+                node.range[1]
+            );
+
+            const tokenBefore = sourceCode.getTokenBefore(node);
+            const tokenAfter = sourceCode.getTokenAfter(node);
+            let prefix = "";
+            let suffix = "";
+
+            if (
+                tokenBefore &&
+                tokenBefore.range[1] === node.range[0] &&
+                !astUtils.canTokensBeAdjacent(tokenBefore, firstRightToken)
+            ) {
+                prefix = " ";
+            }
+
+            if (
+                tokenAfter &&
+                node.range[1] === tokenAfter.range[0] &&
+                !astUtils.canTokensBeAdjacent(lastLeftToken, tokenAfter)
+            ) {
+                suffix = " ";
+            }
+
+            return (
+                prefix +
+                rightText +
+                textBeforeOperator +
+                OPERATOR_FLIP_MAP[operatorToken.value] +
+                textAfterOperator +
+                leftText +
+                suffix
+            );
+        }
+
+        //--------------------------------------------------------------------------
+        // Public
+        //--------------------------------------------------------------------------
+
+        return {
+            BinaryExpression(node) {
+                const expectedLiteral = always ? node.left : node.right;
+                const expectedNonLiteral = always ? node.right : node.left;
+
+                // If `expectedLiteral` is not a literal, and `expectedNonLiteral` is a literal, raise an error.
+                if (
+                    (expectedNonLiteral.type === "Literal" ||
+                        looksLikeLiteral(expectedNonLiteral)) &&
+                    !(
+                        expectedLiteral.type === "Literal" ||
+                        looksLikeLiteral(expectedLiteral)
+                    ) &&
+                    !(!isEqualityOperator(node.operator) && onlyEquality) &&
+                    isComparisonOperator(node.operator) &&
+                    !(exceptRange && isRangeTest(node.parent))
+                ) {
+                    context.report({
+                        node,
+                        messageId: "expected",
+                        data: {
+                            operator: node.operator,
+                            expectedSide: always ? "left" : "right"
+                        },
+                        fix: fixer =>
+                            fixer.replaceText(node, getFlippedString(node))
+                    });
+                }
+            }
+        };
+    }
+};
Index: frontend/node_modules/eslint/lib/shared/ajv.js
===================================================================
--- frontend/node_modules/eslint/lib/shared/ajv.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/shared/ajv.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,34 @@
+/**
+ * @fileoverview The instance of Ajv validator.
+ * @author Evgeny Poberezkin
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const Ajv = require("ajv"),
+    metaSchema = require("ajv/lib/refs/json-schema-draft-04.json");
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = (additionalOptions = {}) => {
+    const ajv = new Ajv({
+        meta: false,
+        useDefaults: true,
+        validateSchema: false,
+        missingRefs: "ignore",
+        verbose: true,
+        schemaId: "auto",
+        ...additionalOptions
+    });
+
+    ajv.addMetaSchema(metaSchema);
+    // eslint-disable-next-line no-underscore-dangle -- Ajv's API
+    ajv._opts.defaultMeta = metaSchema.id;
+
+    return ajv;
+};
Index: frontend/node_modules/eslint/lib/shared/ast-utils.js
===================================================================
--- frontend/node_modules/eslint/lib/shared/ast-utils.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/shared/ast-utils.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,29 @@
+/**
+ * @fileoverview Common utils for AST.
+ *
+ * This file contains only shared items for core and rules.
+ * If you make a utility for rules, please see `../rules/utils/ast-utils.js`.
+ *
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+const breakableTypePattern = /^(?:(?:Do)?While|For(?:In|Of)?|Switch)Statement$/u;
+const lineBreakPattern = /\r\n|[\r\n\u2028\u2029]/u;
+const shebangPattern = /^#!([^\r\n]+)/u;
+
+/**
+ * Creates a version of the `lineBreakPattern` regex with the global flag.
+ * Global regexes are mutable, so this needs to be a function instead of a constant.
+ * @returns {RegExp} A global regular expression that matches line terminators
+ */
+function createGlobalLinebreakMatcher() {
+    return new RegExp(lineBreakPattern.source, "gu");
+}
+
+module.exports = {
+    breakableTypePattern,
+    lineBreakPattern,
+    createGlobalLinebreakMatcher,
+    shebangPattern
+};
Index: frontend/node_modules/eslint/lib/shared/config-validator.js
===================================================================
--- frontend/node_modules/eslint/lib/shared/config-validator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/shared/config-validator.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,347 @@
+/*
+ * STOP!!! DO NOT MODIFY.
+ *
+ * This file is part of the ongoing work to move the eslintrc-style config
+ * system into the @eslint/eslintrc package. This file needs to remain
+ * unchanged in order for this work to proceed.
+ *
+ * If you think you need to change this file, please contact @nzakas first.
+ *
+ * Thanks in advance for your cooperation.
+ */
+
+/**
+ * @fileoverview Validates configs.
+ * @author Brandon Mills
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const
+    util = require("util"),
+    configSchema = require("../../conf/config-schema"),
+    BuiltInRules = require("../rules"),
+    {
+        Legacy: {
+            ConfigOps,
+            environments: BuiltInEnvironments
+        }
+    } = require("@eslint/eslintrc"),
+    { emitDeprecationWarning } = require("./deprecation-warnings");
+
+const ajv = require("./ajv")();
+const ruleValidators = new WeakMap();
+const noop = Function.prototype;
+
+//------------------------------------------------------------------------------
+// Private
+//------------------------------------------------------------------------------
+let validateSchema;
+const severityMap = {
+    error: 2,
+    warn: 1,
+    off: 0
+};
+
+/**
+ * Gets a complete options schema for a rule.
+ * @param {{create: Function, schema: (Array|null)}} rule A new-style rule object
+ * @returns {Object} JSON Schema for the rule's options.
+ */
+function getRuleOptionsSchema(rule) {
+    if (!rule) {
+        return null;
+    }
+
+    const schema = rule.schema || rule.meta && rule.meta.schema;
+
+    // Given a tuple of schemas, insert warning level at the beginning
+    if (Array.isArray(schema)) {
+        if (schema.length) {
+            return {
+                type: "array",
+                items: schema,
+                minItems: 0,
+                maxItems: schema.length
+            };
+        }
+        return {
+            type: "array",
+            minItems: 0,
+            maxItems: 0
+        };
+
+    }
+
+    // Given a full schema, leave it alone
+    return schema || null;
+}
+
+/**
+ * Validates a rule's severity and returns the severity value. Throws an error if the severity is invalid.
+ * @param {options} options The given options for the rule.
+ * @throws {Error} Wrong severity value.
+ * @returns {number|string} The rule's severity value
+ */
+function validateRuleSeverity(options) {
+    const severity = Array.isArray(options) ? options[0] : options;
+    const normSeverity = typeof severity === "string" ? severityMap[severity.toLowerCase()] : severity;
+
+    if (normSeverity === 0 || normSeverity === 1 || normSeverity === 2) {
+        return normSeverity;
+    }
+
+    throw new Error(`\tSeverity should be one of the following: 0 = off, 1 = warn, 2 = error (you passed '${util.inspect(severity).replace(/'/gu, "\"").replace(/\n/gu, "")}').\n`);
+
+}
+
+/**
+ * Validates the non-severity options passed to a rule, based on its schema.
+ * @param {{create: Function}} rule The rule to validate
+ * @param {Array} localOptions The options for the rule, excluding severity
+ * @throws {Error} Any rule validation errors.
+ * @returns {void}
+ */
+function validateRuleSchema(rule, localOptions) {
+    if (!ruleValidators.has(rule)) {
+        const schema = getRuleOptionsSchema(rule);
+
+        if (schema) {
+            ruleValidators.set(rule, ajv.compile(schema));
+        }
+    }
+
+    const validateRule = ruleValidators.get(rule);
+
+    if (validateRule) {
+        validateRule(localOptions);
+        if (validateRule.errors) {
+            throw new Error(validateRule.errors.map(
+                error => `\tValue ${JSON.stringify(error.data)} ${error.message}.\n`
+            ).join(""));
+        }
+    }
+}
+
+/**
+ * Validates a rule's options against its schema.
+ * @param {{create: Function}|null} rule The rule that the config is being validated for
+ * @param {string} ruleId The rule's unique name.
+ * @param {Array|number} options The given options for the rule.
+ * @param {string|null} source The name of the configuration source to report in any errors. If null or undefined,
+ * no source is prepended to the message.
+ * @throws {Error} Upon any bad rule configuration.
+ * @returns {void}
+ */
+function validateRuleOptions(rule, ruleId, options, source = null) {
+    try {
+        const severity = validateRuleSeverity(options);
+
+        if (severity !== 0) {
+            validateRuleSchema(rule, Array.isArray(options) ? options.slice(1) : []);
+        }
+    } catch (err) {
+        const enhancedMessage = `Configuration for rule "${ruleId}" is invalid:\n${err.message}`;
+
+        if (typeof source === "string") {
+            throw new Error(`${source}:\n\t${enhancedMessage}`);
+        } else {
+            throw new Error(enhancedMessage);
+        }
+    }
+}
+
+/**
+ * Validates an environment object
+ * @param {Object} environment The environment config object to validate.
+ * @param {string} source The name of the configuration source to report in any errors.
+ * @param {(envId:string) => Object} [getAdditionalEnv] A map from strings to loaded environments.
+ * @returns {void}
+ */
+function validateEnvironment(
+    environment,
+    source,
+    getAdditionalEnv = noop
+) {
+
+    // not having an environment is ok
+    if (!environment) {
+        return;
+    }
+
+    Object.keys(environment).forEach(id => {
+        const env = getAdditionalEnv(id) || BuiltInEnvironments.get(id) || null;
+
+        if (!env) {
+            const message = `${source}:\n\tEnvironment key "${id}" is unknown\n`;
+
+            throw new Error(message);
+        }
+    });
+}
+
+/**
+ * Validates a rules config object
+ * @param {Object} rulesConfig The rules config object to validate.
+ * @param {string} source The name of the configuration source to report in any errors.
+ * @param {(ruleId:string) => Object} getAdditionalRule A map from strings to loaded rules
+ * @returns {void}
+ */
+function validateRules(
+    rulesConfig,
+    source,
+    getAdditionalRule = noop
+) {
+    if (!rulesConfig) {
+        return;
+    }
+
+    Object.keys(rulesConfig).forEach(id => {
+        const rule = getAdditionalRule(id) || BuiltInRules.get(id) || null;
+
+        validateRuleOptions(rule, id, rulesConfig[id], source);
+    });
+}
+
+/**
+ * Validates a `globals` section of a config file
+ * @param {Object} globalsConfig The `globals` section
+ * @param {string|null} source The name of the configuration source to report in the event of an error.
+ * @returns {void}
+ */
+function validateGlobals(globalsConfig, source = null) {
+    if (!globalsConfig) {
+        return;
+    }
+
+    Object.entries(globalsConfig)
+        .forEach(([configuredGlobal, configuredValue]) => {
+            try {
+                ConfigOps.normalizeConfigGlobal(configuredValue);
+            } catch (err) {
+                throw new Error(`ESLint configuration of global '${configuredGlobal}' in ${source} is invalid:\n${err.message}`);
+            }
+        });
+}
+
+/**
+ * Validate `processor` configuration.
+ * @param {string|undefined} processorName The processor name.
+ * @param {string} source The name of config file.
+ * @param {(id:string) => Processor} getProcessor The getter of defined processors.
+ * @throws {Error} For invalid processor configuration.
+ * @returns {void}
+ */
+function validateProcessor(processorName, source, getProcessor) {
+    if (processorName && !getProcessor(processorName)) {
+        throw new Error(`ESLint configuration of processor in '${source}' is invalid: '${processorName}' was not found.`);
+    }
+}
+
+/**
+ * Formats an array of schema validation errors.
+ * @param {Array} errors An array of error messages to format.
+ * @returns {string} Formatted error message
+ */
+function formatErrors(errors) {
+    return errors.map(error => {
+        if (error.keyword === "additionalProperties") {
+            const formattedPropertyPath = error.dataPath.length ? `${error.dataPath.slice(1)}.${error.params.additionalProperty}` : error.params.additionalProperty;
+
+            return `Unexpected top-level property "${formattedPropertyPath}"`;
+        }
+        if (error.keyword === "type") {
+            const formattedField = error.dataPath.slice(1);
+            const formattedExpectedType = Array.isArray(error.schema) ? error.schema.join("/") : error.schema;
+            const formattedValue = JSON.stringify(error.data);
+
+            return `Property "${formattedField}" is the wrong type (expected ${formattedExpectedType} but got \`${formattedValue}\`)`;
+        }
+
+        const field = error.dataPath[0] === "." ? error.dataPath.slice(1) : error.dataPath;
+
+        return `"${field}" ${error.message}. Value: ${JSON.stringify(error.data)}`;
+    }).map(message => `\t- ${message}.\n`).join("");
+}
+
+/**
+ * Validates the top level properties of the config object.
+ * @param {Object} config The config object to validate.
+ * @param {string} source The name of the configuration source to report in any errors.
+ * @throws {Error} For any config invalid per the schema.
+ * @returns {void}
+ */
+function validateConfigSchema(config, source = null) {
+    validateSchema = validateSchema || ajv.compile(configSchema);
+
+    if (!validateSchema(config)) {
+        throw new Error(`ESLint configuration in ${source} is invalid:\n${formatErrors(validateSchema.errors)}`);
+    }
+
+    if (Object.hasOwnProperty.call(config, "ecmaFeatures")) {
+        emitDeprecationWarning(source, "ESLINT_LEGACY_ECMAFEATURES");
+    }
+}
+
+/**
+ * Validates an entire config object.
+ * @param {Object} config The config object to validate.
+ * @param {string} source The name of the configuration source to report in any errors.
+ * @param {(ruleId:string) => Object} [getAdditionalRule] A map from strings to loaded rules.
+ * @param {(envId:string) => Object} [getAdditionalEnv] A map from strings to loaded envs.
+ * @returns {void}
+ */
+function validate(config, source, getAdditionalRule, getAdditionalEnv) {
+    validateConfigSchema(config, source);
+    validateRules(config.rules, source, getAdditionalRule);
+    validateEnvironment(config.env, source, getAdditionalEnv);
+    validateGlobals(config.globals, source);
+
+    for (const override of config.overrides || []) {
+        validateRules(override.rules, source, getAdditionalRule);
+        validateEnvironment(override.env, source, getAdditionalEnv);
+        validateGlobals(config.globals, source);
+    }
+}
+
+const validated = new WeakSet();
+
+/**
+ * Validate config array object.
+ * @param {ConfigArray} configArray The config array to validate.
+ * @returns {void}
+ */
+function validateConfigArray(configArray) {
+    const getPluginEnv = Map.prototype.get.bind(configArray.pluginEnvironments);
+    const getPluginProcessor = Map.prototype.get.bind(configArray.pluginProcessors);
+    const getPluginRule = Map.prototype.get.bind(configArray.pluginRules);
+
+    // Validate.
+    for (const element of configArray) {
+        if (validated.has(element)) {
+            continue;
+        }
+        validated.add(element);
+
+        validateEnvironment(element.env, element.name, getPluginEnv);
+        validateGlobals(element.globals, element.name);
+        validateProcessor(element.processor, element.name, getPluginProcessor);
+        validateRules(element.rules, element.name, getPluginRule);
+    }
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = {
+    getRuleOptionsSchema,
+    validate,
+    validateConfigArray,
+    validateConfigSchema,
+    validateRuleOptions
+};
Index: frontend/node_modules/eslint/lib/shared/deprecation-warnings.js
===================================================================
--- frontend/node_modules/eslint/lib/shared/deprecation-warnings.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/shared/deprecation-warnings.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,58 @@
+/**
+ * @fileoverview Provide the function that emits deprecation warnings.
+ * @author Toru Nagashima <http://github.com/mysticatea>
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const path = require("path");
+
+//------------------------------------------------------------------------------
+// Private
+//------------------------------------------------------------------------------
+
+// Definitions for deprecation warnings.
+const deprecationWarningMessages = {
+    ESLINT_LEGACY_ECMAFEATURES:
+        "The 'ecmaFeatures' config file property is deprecated and has no effect."
+};
+
+const sourceFileErrorCache = new Set();
+
+/**
+ * Emits a deprecation warning containing a given filepath. A new deprecation warning is emitted
+ * for each unique file path, but repeated invocations with the same file path have no effect.
+ * No warnings are emitted if the `--no-deprecation` or `--no-warnings` Node runtime flags are active.
+ * @param {string} source The name of the configuration source to report the warning for.
+ * @param {string} errorCode The warning message to show.
+ * @returns {void}
+ */
+function emitDeprecationWarning(source, errorCode) {
+    const cacheKey = JSON.stringify({ source, errorCode });
+
+    if (sourceFileErrorCache.has(cacheKey)) {
+        return;
+    }
+
+    sourceFileErrorCache.add(cacheKey);
+
+    const rel = path.relative(process.cwd(), source);
+    const message = deprecationWarningMessages[errorCode];
+
+    process.emitWarning(
+        `${message} (found in "${rel}")`,
+        "DeprecationWarning",
+        errorCode
+    );
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = {
+    emitDeprecationWarning
+};
Index: frontend/node_modules/eslint/lib/shared/directives.js
===================================================================
--- frontend/node_modules/eslint/lib/shared/directives.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/shared/directives.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,15 @@
+/**
+ * @fileoverview Common utils for directives.
+ *
+ * This file contains only shared items for directives.
+ * If you make a utility for rules, please see `../rules/utils/ast-utils.js`.
+ *
+ * @author gfyoung <https://github.com/gfyoung>
+ */
+"use strict";
+
+const directivesPattern = /^(eslint(?:-env|-enable|-disable(?:(?:-next)?-line)?)?|exported|globals?)(?:\s|$)/u;
+
+module.exports = {
+    directivesPattern
+};
Index: frontend/node_modules/eslint/lib/shared/logging.js
===================================================================
--- frontend/node_modules/eslint/lib/shared/logging.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/shared/logging.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,30 @@
+/**
+ * @fileoverview Handle logging for ESLint
+ * @author Gyandeep Singh
+ */
+
+"use strict";
+
+/* eslint no-console: "off" -- Logging util */
+
+/* c8 ignore next */
+module.exports = {
+
+    /**
+     * Cover for console.log
+     * @param {...any} args The elements to log.
+     * @returns {void}
+     */
+    info(...args) {
+        console.log(...args);
+    },
+
+    /**
+     * Cover for console.error
+     * @param {...any} args The elements to log.
+     * @returns {void}
+     */
+    error(...args) {
+        console.error(...args);
+    }
+};
Index: frontend/node_modules/eslint/lib/shared/relative-module-resolver.js
===================================================================
--- frontend/node_modules/eslint/lib/shared/relative-module-resolver.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/shared/relative-module-resolver.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,50 @@
+/*
+ * STOP!!! DO NOT MODIFY.
+ *
+ * This file is part of the ongoing work to move the eslintrc-style config
+ * system into the @eslint/eslintrc package. This file needs to remain
+ * unchanged in order for this work to proceed.
+ *
+ * If you think you need to change this file, please contact @nzakas first.
+ *
+ * Thanks in advance for your cooperation.
+ */
+
+/**
+ * Utility for resolving a module relative to another module
+ * @author Teddy Katz
+ */
+
+"use strict";
+
+const { createRequire } = require("module");
+
+module.exports = {
+
+    /**
+     * Resolves a Node module relative to another module
+     * @param {string} moduleName The name of a Node module, or a path to a Node module.
+     * @param {string} relativeToPath An absolute path indicating the module that `moduleName` should be resolved relative to. This must be
+     * a file rather than a directory, but the file need not actually exist.
+     * @throws {Error} Any error from `module.createRequire` or its `resolve`.
+     * @returns {string} The absolute path that would result from calling `require.resolve(moduleName)` in a file located at `relativeToPath`
+     */
+    resolve(moduleName, relativeToPath) {
+        try {
+            return createRequire(relativeToPath).resolve(moduleName);
+        } catch (error) {
+
+            // This `if` block is for older Node.js than 12.0.0. We can remove this block in the future.
+            if (
+                typeof error === "object" &&
+                error !== null &&
+                error.code === "MODULE_NOT_FOUND" &&
+                !error.requireStack &&
+                error.message.includes(moduleName)
+            ) {
+                error.message += `\nRequire stack:\n- ${relativeToPath}`;
+            }
+            throw error;
+        }
+    }
+};
Index: frontend/node_modules/eslint/lib/shared/runtime-info.js
===================================================================
--- frontend/node_modules/eslint/lib/shared/runtime-info.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/shared/runtime-info.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,167 @@
+/**
+ * @fileoverview Utility to get information about the execution environment.
+ * @author Kai Cataldo
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const path = require("path");
+const spawn = require("cross-spawn");
+const os = require("os");
+const log = require("../shared/logging");
+const packageJson = require("../../package.json");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Generates and returns execution environment information.
+ * @returns {string} A string that contains execution environment information.
+ */
+function environment() {
+    const cache = new Map();
+
+    /**
+     * Checks if a path is a child of a directory.
+     * @param {string} parentPath The parent path to check.
+     * @param {string} childPath The path to check.
+     * @returns {boolean} Whether or not the given path is a child of a directory.
+     */
+    function isChildOfDirectory(parentPath, childPath) {
+        return !path.relative(parentPath, childPath).startsWith("..");
+    }
+
+    /**
+     * Synchronously executes a shell command and formats the result.
+     * @param {string} cmd The command to execute.
+     * @param {Array} args The arguments to be executed with the command.
+     * @throws {Error} As may be collected by `cross-spawn.sync`.
+     * @returns {string} The version returned by the command.
+     */
+    function execCommand(cmd, args) {
+        const key = [cmd, ...args].join(" ");
+
+        if (cache.has(key)) {
+            return cache.get(key);
+        }
+
+        const process = spawn.sync(cmd, args, { encoding: "utf8" });
+
+        if (process.error) {
+            throw process.error;
+        }
+
+        const result = process.stdout.trim();
+
+        cache.set(key, result);
+        return result;
+    }
+
+    /**
+     * Normalizes a version number.
+     * @param {string} versionStr The string to normalize.
+     * @returns {string} The normalized version number.
+     */
+    function normalizeVersionStr(versionStr) {
+        return versionStr.startsWith("v") ? versionStr : `v${versionStr}`;
+    }
+
+    /**
+     * Gets bin version.
+     * @param {string} bin The bin to check.
+     * @throws {Error} As may be collected by `cross-spawn.sync`.
+     * @returns {string} The normalized version returned by the command.
+     */
+    function getBinVersion(bin) {
+        const binArgs = ["--version"];
+
+        try {
+            return normalizeVersionStr(execCommand(bin, binArgs));
+        } catch (e) {
+            log.error(`Error finding ${bin} version running the command \`${bin} ${binArgs.join(" ")}\``);
+            throw e;
+        }
+    }
+
+    /**
+     * Gets installed npm package version.
+     * @param {string} pkg The package to check.
+     * @param {boolean} global Whether to check globally or not.
+     * @throws {Error} As may be collected by `cross-spawn.sync`.
+     * @returns {string} The normalized version returned by the command.
+     */
+    function getNpmPackageVersion(pkg, { global = false } = {}) {
+        const npmBinArgs = ["bin", "-g"];
+        const npmLsArgs = ["ls", "--depth=0", "--json", pkg];
+
+        if (global) {
+            npmLsArgs.push("-g");
+        }
+
+        try {
+            const parsedStdout = JSON.parse(execCommand("npm", npmLsArgs));
+
+            /*
+             * Checking globally returns an empty JSON object, while local checks
+             * include the name and version of the local project.
+             */
+            if (Object.keys(parsedStdout).length === 0 || !(parsedStdout.dependencies && parsedStdout.dependencies.eslint)) {
+                return "Not found";
+            }
+
+            const [, processBinPath] = process.argv;
+            let npmBinPath;
+
+            try {
+                npmBinPath = execCommand("npm", npmBinArgs);
+            } catch (e) {
+                log.error(`Error finding npm binary path when running command \`npm ${npmBinArgs.join(" ")}\``);
+                throw e;
+            }
+
+            const isGlobal = isChildOfDirectory(npmBinPath, processBinPath);
+            let pkgVersion = parsedStdout.dependencies.eslint.version;
+
+            if ((global && isGlobal) || (!global && !isGlobal)) {
+                pkgVersion += " (Currently used)";
+            }
+
+            return normalizeVersionStr(pkgVersion);
+        } catch (e) {
+            log.error(`Error finding ${pkg} version running the command \`npm ${npmLsArgs.join(" ")}\``);
+            throw e;
+        }
+    }
+
+    return [
+        "Environment Info:",
+        "",
+        `Node version: ${getBinVersion("node")}`,
+        `npm version: ${getBinVersion("npm")}`,
+        `Local ESLint version: ${getNpmPackageVersion("eslint", { global: false })}`,
+        `Global ESLint version: ${getNpmPackageVersion("eslint", { global: true })}`,
+        `Operating System: ${os.platform()} ${os.release()}`
+    ].join("\n");
+}
+
+/**
+ * Returns version of currently executing ESLint.
+ * @returns {string} The version from the currently executing ESLint's package.json.
+ */
+function version() {
+    return `v${packageJson.version}`;
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+module.exports = {
+    environment,
+    version
+};
Index: frontend/node_modules/eslint/lib/shared/severity.js
===================================================================
--- frontend/node_modules/eslint/lib/shared/severity.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/shared/severity.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,49 @@
+/**
+ * @fileoverview Helpers for severity values (e.g. normalizing different types).
+ * @author Bryan Mishkin
+ */
+
+"use strict";
+
+/**
+ * Convert severity value of different types to a string.
+ * @param {string|number} severity severity value
+ * @throws error if severity is invalid
+ * @returns {string} severity string
+ */
+function normalizeSeverityToString(severity) {
+    if ([2, "2", "error"].includes(severity)) {
+        return "error";
+    }
+    if ([1, "1", "warn"].includes(severity)) {
+        return "warn";
+    }
+    if ([0, "0", "off"].includes(severity)) {
+        return "off";
+    }
+    throw new Error(`Invalid severity value: ${severity}`);
+}
+
+/**
+ * Convert severity value of different types to a number.
+ * @param {string|number} severity severity value
+ * @throws error if severity is invalid
+ * @returns {number} severity number
+ */
+function normalizeSeverityToNumber(severity) {
+    if ([2, "2", "error"].includes(severity)) {
+        return 2;
+    }
+    if ([1, "1", "warn"].includes(severity)) {
+        return 1;
+    }
+    if ([0, "0", "off"].includes(severity)) {
+        return 0;
+    }
+    throw new Error(`Invalid severity value: ${severity}`);
+}
+
+module.exports = {
+    normalizeSeverityToString,
+    normalizeSeverityToNumber
+};
Index: frontend/node_modules/eslint/lib/shared/string-utils.js
===================================================================
--- frontend/node_modules/eslint/lib/shared/string-utils.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/shared/string-utils.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,60 @@
+/**
+ * @fileoverview Utilities to operate on strings.
+ * @author Stephen Wade
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const Graphemer = require("graphemer").default;
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+// eslint-disable-next-line no-control-regex -- intentionally including control characters
+const ASCII_REGEX = /^[\u0000-\u007f]*$/u;
+
+/** @type {Graphemer | undefined} */
+let splitter;
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+/**
+ * Converts the first letter of a string to uppercase.
+ * @param {string} string The string to operate on
+ * @returns {string} The converted string
+ */
+function upperCaseFirst(string) {
+    if (string.length <= 1) {
+        return string.toUpperCase();
+    }
+    return string[0].toUpperCase() + string.slice(1);
+}
+
+/**
+ * Counts graphemes in a given string.
+ * @param {string} value A string to count graphemes.
+ * @returns {number} The number of graphemes in `value`.
+ */
+function getGraphemeCount(value) {
+    if (ASCII_REGEX.test(value)) {
+        return value.length;
+    }
+
+    if (!splitter) {
+        splitter = new Graphemer();
+    }
+
+    return splitter.countGraphemes(value);
+}
+
+module.exports = {
+    upperCaseFirst,
+    getGraphemeCount
+};
Index: frontend/node_modules/eslint/lib/shared/traverser.js
===================================================================
--- frontend/node_modules/eslint/lib/shared/traverser.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/shared/traverser.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,195 @@
+/**
+ * @fileoverview Traverser to traverse AST trees.
+ * @author Nicholas C. Zakas
+ * @author Toru Nagashima
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const vk = require("eslint-visitor-keys");
+const debug = require("debug")("eslint:traverser");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Do nothing.
+ * @returns {void}
+ */
+function noop() {
+
+    // do nothing.
+}
+
+/**
+ * Check whether the given value is an ASTNode or not.
+ * @param {any} x The value to check.
+ * @returns {boolean} `true` if the value is an ASTNode.
+ */
+function isNode(x) {
+    return x !== null && typeof x === "object" && typeof x.type === "string";
+}
+
+/**
+ * Get the visitor keys of a given node.
+ * @param {Object} visitorKeys The map of visitor keys.
+ * @param {ASTNode} node The node to get their visitor keys.
+ * @returns {string[]} The visitor keys of the node.
+ */
+function getVisitorKeys(visitorKeys, node) {
+    let keys = visitorKeys[node.type];
+
+    if (!keys) {
+        keys = vk.getKeys(node);
+        debug("Unknown node type \"%s\": Estimated visitor keys %j", node.type, keys);
+    }
+
+    return keys;
+}
+
+/**
+ * The traverser class to traverse AST trees.
+ */
+class Traverser {
+    constructor() {
+        this._current = null;
+        this._parents = [];
+        this._skipped = false;
+        this._broken = false;
+        this._visitorKeys = null;
+        this._enter = null;
+        this._leave = null;
+    }
+
+    /**
+     * Gives current node.
+     * @returns {ASTNode} The current node.
+     */
+    current() {
+        return this._current;
+    }
+
+    /**
+     * Gives a copy of the ancestor nodes.
+     * @returns {ASTNode[]} The ancestor nodes.
+     */
+    parents() {
+        return this._parents.slice(0);
+    }
+
+    /**
+     * Break the current traversal.
+     * @returns {void}
+     */
+    break() {
+        this._broken = true;
+    }
+
+    /**
+     * Skip child nodes for the current traversal.
+     * @returns {void}
+     */
+    skip() {
+        this._skipped = true;
+    }
+
+    /**
+     * Traverse the given AST tree.
+     * @param {ASTNode} node The root node to traverse.
+     * @param {Object} options The option object.
+     * @param {Object} [options.visitorKeys=DEFAULT_VISITOR_KEYS] The keys of each node types to traverse child nodes. Default is `./default-visitor-keys.json`.
+     * @param {Function} [options.enter=noop] The callback function which is called on entering each node.
+     * @param {Function} [options.leave=noop] The callback function which is called on leaving each node.
+     * @returns {void}
+     */
+    traverse(node, options) {
+        this._current = null;
+        this._parents = [];
+        this._skipped = false;
+        this._broken = false;
+        this._visitorKeys = options.visitorKeys || vk.KEYS;
+        this._enter = options.enter || noop;
+        this._leave = options.leave || noop;
+        this._traverse(node, null);
+    }
+
+    /**
+     * Traverse the given AST tree recursively.
+     * @param {ASTNode} node The current node.
+     * @param {ASTNode|null} parent The parent node.
+     * @returns {void}
+     * @private
+     */
+    _traverse(node, parent) {
+        if (!isNode(node)) {
+            return;
+        }
+
+        this._current = node;
+        this._skipped = false;
+        this._enter(node, parent);
+
+        if (!this._skipped && !this._broken) {
+            const keys = getVisitorKeys(this._visitorKeys, node);
+
+            if (keys.length >= 1) {
+                this._parents.push(node);
+                for (let i = 0; i < keys.length && !this._broken; ++i) {
+                    const child = node[keys[i]];
+
+                    if (Array.isArray(child)) {
+                        for (let j = 0; j < child.length && !this._broken; ++j) {
+                            this._traverse(child[j], node);
+                        }
+                    } else {
+                        this._traverse(child, node);
+                    }
+                }
+                this._parents.pop();
+            }
+        }
+
+        if (!this._broken) {
+            this._leave(node, parent);
+        }
+
+        this._current = parent;
+    }
+
+    /**
+     * Calculates the keys to use for traversal.
+     * @param {ASTNode} node The node to read keys from.
+     * @returns {string[]} An array of keys to visit on the node.
+     * @private
+     */
+    static getKeys(node) {
+        return vk.getKeys(node);
+    }
+
+    /**
+     * Traverse the given AST tree.
+     * @param {ASTNode} node The root node to traverse.
+     * @param {Object} options The option object.
+     * @param {Object} [options.visitorKeys=DEFAULT_VISITOR_KEYS] The keys of each node types to traverse child nodes. Default is `./default-visitor-keys.json`.
+     * @param {Function} [options.enter=noop] The callback function which is called on entering each node.
+     * @param {Function} [options.leave=noop] The callback function which is called on leaving each node.
+     * @returns {void}
+     */
+    static traverse(node, options) {
+        new Traverser().traverse(node, options);
+    }
+
+    /**
+     * The default visitor keys.
+     * @type {Object}
+     */
+    static get DEFAULT_VISITOR_KEYS() {
+        return vk.KEYS;
+    }
+}
+
+module.exports = Traverser;
Index: frontend/node_modules/eslint/lib/shared/types.js
===================================================================
--- frontend/node_modules/eslint/lib/shared/types.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/shared/types.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,216 @@
+/**
+ * @fileoverview Define common types for input completion.
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+/** @type {any} */
+module.exports = {};
+
+/** @typedef {boolean | "off" | "readable" | "readonly" | "writable" | "writeable"} GlobalConf */
+/** @typedef {0 | 1 | 2 | "off" | "warn" | "error"} SeverityConf */
+/** @typedef {SeverityConf | [SeverityConf, ...any[]]} RuleConf */
+
+/**
+ * @typedef {Object} EcmaFeatures
+ * @property {boolean} [globalReturn] Enabling `return` statements at the top-level.
+ * @property {boolean} [jsx] Enabling JSX syntax.
+ * @property {boolean} [impliedStrict] Enabling strict mode always.
+ */
+
+/**
+ * @typedef {Object} ParserOptions
+ * @property {EcmaFeatures} [ecmaFeatures] The optional features.
+ * @property {3|5|6|7|8|9|10|11|12|13|14|15|2015|2016|2017|2018|2019|2020|2021|2022|2023|2024} [ecmaVersion] The ECMAScript version (or revision number).
+ * @property {"script"|"module"} [sourceType] The source code type.
+ * @property {boolean} [allowReserved] Allowing the use of reserved words as identifiers in ES3.
+ */
+
+/**
+ * @typedef {Object} LanguageOptions
+ * @property {number|"latest"} [ecmaVersion] The ECMAScript version (or revision number).
+ * @property {Record<string, GlobalConf>} [globals] The global variable settings.
+ * @property {"script"|"module"|"commonjs"} [sourceType] The source code type.
+ * @property {string|Object} [parser] The parser to use.
+ * @property {Object} [parserOptions] The parser options to use.
+ */
+
+/**
+ * @typedef {Object} ConfigData
+ * @property {Record<string, boolean>} [env] The environment settings.
+ * @property {string | string[]} [extends] The path to other config files or the package name of shareable configs.
+ * @property {Record<string, GlobalConf>} [globals] The global variable settings.
+ * @property {string | string[]} [ignorePatterns] The glob patterns that ignore to lint.
+ * @property {boolean} [noInlineConfig] The flag that disables directive comments.
+ * @property {OverrideConfigData[]} [overrides] The override settings per kind of files.
+ * @property {string} [parser] The path to a parser or the package name of a parser.
+ * @property {ParserOptions} [parserOptions] The parser options.
+ * @property {string[]} [plugins] The plugin specifiers.
+ * @property {string} [processor] The processor specifier.
+ * @property {boolean} [reportUnusedDisableDirectives] The flag to report unused `eslint-disable` comments.
+ * @property {boolean} [root] The root flag.
+ * @property {Record<string, RuleConf>} [rules] The rule settings.
+ * @property {Object} [settings] The shared settings.
+ */
+
+/**
+ * @typedef {Object} OverrideConfigData
+ * @property {Record<string, boolean>} [env] The environment settings.
+ * @property {string | string[]} [excludedFiles] The glob patterns for excluded files.
+ * @property {string | string[]} [extends] The path to other config files or the package name of shareable configs.
+ * @property {string | string[]} files The glob patterns for target files.
+ * @property {Record<string, GlobalConf>} [globals] The global variable settings.
+ * @property {boolean} [noInlineConfig] The flag that disables directive comments.
+ * @property {OverrideConfigData[]} [overrides] The override settings per kind of files.
+ * @property {string} [parser] The path to a parser or the package name of a parser.
+ * @property {ParserOptions} [parserOptions] The parser options.
+ * @property {string[]} [plugins] The plugin specifiers.
+ * @property {string} [processor] The processor specifier.
+ * @property {boolean} [reportUnusedDisableDirectives] The flag to report unused `eslint-disable` comments.
+ * @property {Record<string, RuleConf>} [rules] The rule settings.
+ * @property {Object} [settings] The shared settings.
+ */
+
+/**
+ * @typedef {Object} ParseResult
+ * @property {Object} ast The AST.
+ * @property {ScopeManager} [scopeManager] The scope manager of the AST.
+ * @property {Record<string, any>} [services] The services that the parser provides.
+ * @property {Record<string, string[]>} [visitorKeys] The visitor keys of the AST.
+ */
+
+/**
+ * @typedef {Object} Parser
+ * @property {(text:string, options:ParserOptions) => Object} parse The definition of global variables.
+ * @property {(text:string, options:ParserOptions) => ParseResult} [parseForESLint] The parser options that will be enabled under this environment.
+ */
+
+/**
+ * @typedef {Object} Environment
+ * @property {Record<string, GlobalConf>} [globals] The definition of global variables.
+ * @property {ParserOptions} [parserOptions] The parser options that will be enabled under this environment.
+ */
+
+/**
+ * @typedef {Object} LintMessage
+ * @property {number|undefined} column The 1-based column number.
+ * @property {number} [endColumn] The 1-based column number of the end location.
+ * @property {number} [endLine] The 1-based line number of the end location.
+ * @property {boolean} [fatal] If `true` then this is a fatal error.
+ * @property {{range:[number,number], text:string}} [fix] Information for autofix.
+ * @property {number|undefined} line The 1-based line number.
+ * @property {string} message The error message.
+ * @property {string} [messageId] The ID of the message in the rule's meta.
+ * @property {(string|null)} nodeType Type of node
+ * @property {string|null} ruleId The ID of the rule which makes this message.
+ * @property {0|1|2} severity The severity of this message.
+ * @property {Array<{desc?: string, messageId?: string, fix: {range: [number, number], text: string}}>} [suggestions] Information for suggestions.
+ */
+
+/**
+ * @typedef {Object} SuppressedLintMessage
+ * @property {number|undefined} column The 1-based column number.
+ * @property {number} [endColumn] The 1-based column number of the end location.
+ * @property {number} [endLine] The 1-based line number of the end location.
+ * @property {boolean} [fatal] If `true` then this is a fatal error.
+ * @property {{range:[number,number], text:string}} [fix] Information for autofix.
+ * @property {number|undefined} line The 1-based line number.
+ * @property {string} message The error message.
+ * @property {string} [messageId] The ID of the message in the rule's meta.
+ * @property {(string|null)} nodeType Type of node
+ * @property {string|null} ruleId The ID of the rule which makes this message.
+ * @property {0|1|2} severity The severity of this message.
+ * @property {Array<{kind: string, justification: string}>} suppressions The suppression info.
+ * @property {Array<{desc?: string, messageId?: string, fix: {range: [number, number], text: string}}>} [suggestions] Information for suggestions.
+ */
+
+/**
+ * @typedef {Object} SuggestionResult
+ * @property {string} desc A short description.
+ * @property {string} [messageId] Id referencing a message for the description.
+ * @property {{ text: string, range: number[] }} fix fix result info
+ */
+
+/**
+ * @typedef {Object} Processor
+ * @property {(text:string, filename:string) => Array<string | { text:string, filename:string }>} [preprocess] The function to extract code blocks.
+ * @property {(messagesList:LintMessage[][], filename:string) => LintMessage[]} [postprocess] The function to merge messages.
+ * @property {boolean} [supportsAutofix] If `true` then it means the processor supports autofix.
+ */
+
+/**
+ * @typedef {Object} RuleMetaDocs
+ * @property {string} description The description of the rule.
+ * @property {boolean} recommended If `true` then the rule is included in `eslint:recommended` preset.
+ * @property {string} url The URL of the rule documentation.
+ */
+
+/**
+ * @typedef {Object} RuleMeta
+ * @property {boolean} [deprecated] If `true` then the rule has been deprecated.
+ * @property {RuleMetaDocs} docs The document information of the rule.
+ * @property {"code"|"whitespace"} [fixable] The autofix type.
+ * @property {boolean} [hasSuggestions] If `true` then the rule provides suggestions.
+ * @property {Record<string,string>} [messages] The messages the rule reports.
+ * @property {string[]} [replacedBy] The IDs of the alternative rules.
+ * @property {Array|Object} schema The option schema of the rule.
+ * @property {"problem"|"suggestion"|"layout"} type The rule type.
+ */
+
+/**
+ * @typedef {Object} Rule
+ * @property {Function} create The factory of the rule.
+ * @property {RuleMeta} meta The meta data of the rule.
+ */
+
+/**
+ * @typedef {Object} Plugin
+ * @property {Record<string, ConfigData>} [configs] The definition of plugin configs.
+ * @property {Record<string, Environment>} [environments] The definition of plugin environments.
+ * @property {Record<string, Processor>} [processors] The definition of plugin processors.
+ * @property {Record<string, Function | Rule>} [rules] The definition of plugin rules.
+ */
+
+/**
+ * Information of deprecated rules.
+ * @typedef {Object} DeprecatedRuleInfo
+ * @property {string} ruleId The rule ID.
+ * @property {string[]} replacedBy The rule IDs that replace this deprecated rule.
+ */
+
+/**
+ * A linting result.
+ * @typedef {Object} LintResult
+ * @property {string} filePath The path to the file that was linted.
+ * @property {LintMessage[]} messages All of the messages for the result.
+ * @property {SuppressedLintMessage[]} suppressedMessages All of the suppressed messages for the result.
+ * @property {number} errorCount Number of errors for the result.
+ * @property {number} fatalErrorCount Number of fatal errors for the result.
+ * @property {number} warningCount Number of warnings for the result.
+ * @property {number} fixableErrorCount Number of fixable errors for the result.
+ * @property {number} fixableWarningCount Number of fixable warnings for the result.
+ * @property {string} [source] The source code of the file that was linted.
+ * @property {string} [output] The source code of the file that was linted, with as many fixes applied as possible.
+ * @property {DeprecatedRuleInfo[]} usedDeprecatedRules The list of used deprecated rules.
+ */
+
+/**
+ * Information provided when the maximum warning threshold is exceeded.
+ * @typedef {Object} MaxWarningsExceeded
+ * @property {number} maxWarnings Number of warnings to trigger nonzero exit code.
+ * @property {number} foundWarnings Number of warnings found while linting.
+ */
+
+/**
+ * Metadata about results for formatters.
+ * @typedef {Object} ResultsMeta
+ * @property {MaxWarningsExceeded} [maxWarningsExceeded] Present if the maxWarnings threshold was exceeded.
+ */
+
+/**
+ * A formatter function.
+ * @callback FormatterFunction
+ * @param {LintResult[]} results The list of linting results.
+ * @param {{cwd: string, maxWarningsExceeded?: MaxWarningsExceeded, rulesMeta: Record<string, RuleMeta>}} [context] A context object.
+ * @returns {string | Promise<string>} Formatted text.
+ */
Index: frontend/node_modules/eslint/lib/source-code/index.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,5 @@
+"use strict";
+
+module.exports = {
+    SourceCode: require("./source-code")
+};
Index: frontend/node_modules/eslint/lib/source-code/source-code.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/source-code.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/source-code.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,1055 @@
+/**
+ * @fileoverview Abstraction of JavaScript source code.
+ * @author Nicholas C. Zakas
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const
+    { isCommentToken } = require("@eslint-community/eslint-utils"),
+    TokenStore = require("./token-store"),
+    astUtils = require("../shared/ast-utils"),
+    Traverser = require("../shared/traverser"),
+    globals = require("../../conf/globals"),
+    {
+        directivesPattern
+    } = require("../shared/directives"),
+
+    /* eslint-disable-next-line n/no-restricted-require -- Too messy to figure out right now. */
+    ConfigCommentParser = require("../linter/config-comment-parser"),
+    eslintScope = require("eslint-scope");
+
+//------------------------------------------------------------------------------
+// Type Definitions
+//------------------------------------------------------------------------------
+
+/** @typedef {import("eslint-scope").Variable} Variable */
+
+//------------------------------------------------------------------------------
+// Private
+//------------------------------------------------------------------------------
+
+const commentParser = new ConfigCommentParser();
+
+/**
+ * Validates that the given AST has the required information.
+ * @param {ASTNode} ast The Program node of the AST to check.
+ * @throws {Error} If the AST doesn't contain the correct information.
+ * @returns {void}
+ * @private
+ */
+function validate(ast) {
+    if (!ast.tokens) {
+        throw new Error("AST is missing the tokens array.");
+    }
+
+    if (!ast.comments) {
+        throw new Error("AST is missing the comments array.");
+    }
+
+    if (!ast.loc) {
+        throw new Error("AST is missing location information.");
+    }
+
+    if (!ast.range) {
+        throw new Error("AST is missing range information");
+    }
+}
+
+/**
+ * Retrieves globals for the given ecmaVersion.
+ * @param {number} ecmaVersion The version to retrieve globals for.
+ * @returns {Object} The globals for the given ecmaVersion.
+ */
+function getGlobalsForEcmaVersion(ecmaVersion) {
+
+    switch (ecmaVersion) {
+        case 3:
+            return globals.es3;
+
+        case 5:
+            return globals.es5;
+
+        default:
+            if (ecmaVersion < 2015) {
+                return globals[`es${ecmaVersion + 2009}`];
+            }
+
+            return globals[`es${ecmaVersion}`];
+    }
+}
+
+/**
+ * Check to see if its a ES6 export declaration.
+ * @param {ASTNode} astNode An AST node.
+ * @returns {boolean} whether the given node represents an export declaration.
+ * @private
+ */
+function looksLikeExport(astNode) {
+    return astNode.type === "ExportDefaultDeclaration" || astNode.type === "ExportNamedDeclaration" ||
+        astNode.type === "ExportAllDeclaration" || astNode.type === "ExportSpecifier";
+}
+
+/**
+ * Merges two sorted lists into a larger sorted list in O(n) time.
+ * @param {Token[]} tokens The list of tokens.
+ * @param {Token[]} comments The list of comments.
+ * @returns {Token[]} A sorted list of tokens and comments.
+ * @private
+ */
+function sortedMerge(tokens, comments) {
+    const result = [];
+    let tokenIndex = 0;
+    let commentIndex = 0;
+
+    while (tokenIndex < tokens.length || commentIndex < comments.length) {
+        if (commentIndex >= comments.length || tokenIndex < tokens.length && tokens[tokenIndex].range[0] < comments[commentIndex].range[0]) {
+            result.push(tokens[tokenIndex++]);
+        } else {
+            result.push(comments[commentIndex++]);
+        }
+    }
+
+    return result;
+}
+
+/**
+ * Normalizes a value for a global in a config
+ * @param {(boolean|string|null)} configuredValue The value given for a global in configuration or in
+ * a global directive comment
+ * @returns {("readable"|"writeable"|"off")} The value normalized as a string
+ * @throws Error if global value is invalid
+ */
+function normalizeConfigGlobal(configuredValue) {
+    switch (configuredValue) {
+        case "off":
+            return "off";
+
+        case true:
+        case "true":
+        case "writeable":
+        case "writable":
+            return "writable";
+
+        case null:
+        case false:
+        case "false":
+        case "readable":
+        case "readonly":
+            return "readonly";
+
+        default:
+            throw new Error(`'${configuredValue}' is not a valid configuration for a global (use 'readonly', 'writable', or 'off')`);
+    }
+}
+
+/**
+ * Determines if two nodes or tokens overlap.
+ * @param {ASTNode|Token} first The first node or token to check.
+ * @param {ASTNode|Token} second The second node or token to check.
+ * @returns {boolean} True if the two nodes or tokens overlap.
+ * @private
+ */
+function nodesOrTokensOverlap(first, second) {
+    return (first.range[0] <= second.range[0] && first.range[1] >= second.range[0]) ||
+        (second.range[0] <= first.range[0] && second.range[1] >= first.range[0]);
+}
+
+/**
+ * Determines if two nodes or tokens have at least one whitespace character
+ * between them. Order does not matter. Returns false if the given nodes or
+ * tokens overlap.
+ * @param {SourceCode} sourceCode The source code object.
+ * @param {ASTNode|Token} first The first node or token to check between.
+ * @param {ASTNode|Token} second The second node or token to check between.
+ * @param {boolean} checkInsideOfJSXText If `true` is present, check inside of JSXText tokens for backward compatibility.
+ * @returns {boolean} True if there is a whitespace character between
+ * any of the tokens found between the two given nodes or tokens.
+ * @public
+ */
+function isSpaceBetween(sourceCode, first, second, checkInsideOfJSXText) {
+    if (nodesOrTokensOverlap(first, second)) {
+        return false;
+    }
+
+    const [startingNodeOrToken, endingNodeOrToken] = first.range[1] <= second.range[0]
+        ? [first, second]
+        : [second, first];
+    const firstToken = sourceCode.getLastToken(startingNodeOrToken) || startingNodeOrToken;
+    const finalToken = sourceCode.getFirstToken(endingNodeOrToken) || endingNodeOrToken;
+    let currentToken = firstToken;
+
+    while (currentToken !== finalToken) {
+        const nextToken = sourceCode.getTokenAfter(currentToken, { includeComments: true });
+
+        if (
+            currentToken.range[1] !== nextToken.range[0] ||
+
+                /*
+                 * For backward compatibility, check spaces in JSXText.
+                 * https://github.com/eslint/eslint/issues/12614
+                 */
+                (
+                    checkInsideOfJSXText &&
+                    nextToken !== finalToken &&
+                    nextToken.type === "JSXText" &&
+                    /\s/u.test(nextToken.value)
+                )
+        ) {
+            return true;
+        }
+
+        currentToken = nextToken;
+    }
+
+    return false;
+}
+
+//-----------------------------------------------------------------------------
+// Directive Comments
+//-----------------------------------------------------------------------------
+
+/**
+ * Ensures that variables representing built-in properties of the Global Object,
+ * and any globals declared by special block comments, are present in the global
+ * scope.
+ * @param {Scope} globalScope The global scope.
+ * @param {Object|undefined} configGlobals The globals declared in configuration
+ * @param {Object|undefined} inlineGlobals The globals declared in the source code
+ * @returns {void}
+ */
+function addDeclaredGlobals(globalScope, configGlobals = {}, inlineGlobals = {}) {
+
+    // Define configured global variables.
+    for (const id of new Set([...Object.keys(configGlobals), ...Object.keys(inlineGlobals)])) {
+
+        /*
+         * `normalizeConfigGlobal` will throw an error if a configured global value is invalid. However, these errors would
+         * typically be caught when validating a config anyway (validity for inline global comments is checked separately).
+         */
+        const configValue = configGlobals[id] === void 0 ? void 0 : normalizeConfigGlobal(configGlobals[id]);
+        const commentValue = inlineGlobals[id] && inlineGlobals[id].value;
+        const value = commentValue || configValue;
+        const sourceComments = inlineGlobals[id] && inlineGlobals[id].comments;
+
+        if (value === "off") {
+            continue;
+        }
+
+        let variable = globalScope.set.get(id);
+
+        if (!variable) {
+            variable = new eslintScope.Variable(id, globalScope);
+
+            globalScope.variables.push(variable);
+            globalScope.set.set(id, variable);
+        }
+
+        variable.eslintImplicitGlobalSetting = configValue;
+        variable.eslintExplicitGlobal = sourceComments !== void 0;
+        variable.eslintExplicitGlobalComments = sourceComments;
+        variable.writeable = (value === "writable");
+    }
+
+    /*
+     * "through" contains all references which definitions cannot be found.
+     * Since we augment the global scope using configuration, we need to update
+     * references and remove the ones that were added by configuration.
+     */
+    globalScope.through = globalScope.through.filter(reference => {
+        const name = reference.identifier.name;
+        const variable = globalScope.set.get(name);
+
+        if (variable) {
+
+            /*
+             * Links the variable and the reference.
+             * And this reference is removed from `Scope#through`.
+             */
+            reference.resolved = variable;
+            variable.references.push(reference);
+
+            return false;
+        }
+
+        return true;
+    });
+}
+
+/**
+ * Sets the given variable names as exported so they won't be triggered by
+ * the `no-unused-vars` rule.
+ * @param {eslint.Scope} globalScope The global scope to define exports in.
+ * @param {Record<string,string>} variables An object whose keys are the variable
+ *      names to export.
+ * @returns {void}
+ */
+function markExportedVariables(globalScope, variables) {
+
+    Object.keys(variables).forEach(name => {
+        const variable = globalScope.set.get(name);
+
+        if (variable) {
+            variable.eslintUsed = true;
+            variable.eslintExported = true;
+        }
+    });
+
+}
+
+//------------------------------------------------------------------------------
+// Public Interface
+//------------------------------------------------------------------------------
+
+const caches = Symbol("caches");
+
+/**
+ * Represents parsed source code.
+ */
+class SourceCode extends TokenStore {
+
+    /**
+     * @param {string|Object} textOrConfig The source code text or config object.
+     * @param {string} textOrConfig.text The source code text.
+     * @param {ASTNode} textOrConfig.ast The Program node of the AST representing the code. This AST should be created from the text that BOM was stripped.
+     * @param {Object|null} textOrConfig.parserServices The parser services.
+     * @param {ScopeManager|null} textOrConfig.scopeManager The scope of this source code.
+     * @param {Object|null} textOrConfig.visitorKeys The visitor keys to traverse AST.
+     * @param {ASTNode} [astIfNoConfig] The Program node of the AST representing the code. This AST should be created from the text that BOM was stripped.
+     */
+    constructor(textOrConfig, astIfNoConfig) {
+        let text, ast, parserServices, scopeManager, visitorKeys;
+
+        // Process overloading.
+        if (typeof textOrConfig === "string") {
+            text = textOrConfig;
+            ast = astIfNoConfig;
+        } else if (typeof textOrConfig === "object" && textOrConfig !== null) {
+            text = textOrConfig.text;
+            ast = textOrConfig.ast;
+            parserServices = textOrConfig.parserServices;
+            scopeManager = textOrConfig.scopeManager;
+            visitorKeys = textOrConfig.visitorKeys;
+        }
+
+        validate(ast);
+        super(ast.tokens, ast.comments);
+
+        /**
+         * General purpose caching for the class.
+         */
+        this[caches] = new Map([
+            ["scopes", new WeakMap()],
+            ["vars", new Map()],
+            ["configNodes", void 0]
+        ]);
+
+        /**
+         * The flag to indicate that the source code has Unicode BOM.
+         * @type {boolean}
+         */
+        this.hasBOM = (text.charCodeAt(0) === 0xFEFF);
+
+        /**
+         * The original text source code.
+         * BOM was stripped from this text.
+         * @type {string}
+         */
+        this.text = (this.hasBOM ? text.slice(1) : text);
+
+        /**
+         * The parsed AST for the source code.
+         * @type {ASTNode}
+         */
+        this.ast = ast;
+
+        /**
+         * The parser services of this source code.
+         * @type {Object}
+         */
+        this.parserServices = parserServices || {};
+
+        /**
+         * The scope of this source code.
+         * @type {ScopeManager|null}
+         */
+        this.scopeManager = scopeManager || null;
+
+        /**
+         * The visitor keys to traverse AST.
+         * @type {Object}
+         */
+        this.visitorKeys = visitorKeys || Traverser.DEFAULT_VISITOR_KEYS;
+
+        // Check the source text for the presence of a shebang since it is parsed as a standard line comment.
+        const shebangMatched = this.text.match(astUtils.shebangPattern);
+        const hasShebang = shebangMatched && ast.comments.length && ast.comments[0].value === shebangMatched[1];
+
+        if (hasShebang) {
+            ast.comments[0].type = "Shebang";
+        }
+
+        this.tokensAndComments = sortedMerge(ast.tokens, ast.comments);
+
+        /**
+         * The source code split into lines according to ECMA-262 specification.
+         * This is done to avoid each rule needing to do so separately.
+         * @type {string[]}
+         */
+        this.lines = [];
+        this.lineStartIndices = [0];
+
+        const lineEndingPattern = astUtils.createGlobalLinebreakMatcher();
+        let match;
+
+        /*
+         * Previously, this was implemented using a regex that
+         * matched a sequence of non-linebreak characters followed by a
+         * linebreak, then adding the lengths of the matches. However,
+         * this caused a catastrophic backtracking issue when the end
+         * of a file contained a large number of non-newline characters.
+         * To avoid this, the current implementation just matches newlines
+         * and uses match.index to get the correct line start indices.
+         */
+        while ((match = lineEndingPattern.exec(this.text))) {
+            this.lines.push(this.text.slice(this.lineStartIndices[this.lineStartIndices.length - 1], match.index));
+            this.lineStartIndices.push(match.index + match[0].length);
+        }
+        this.lines.push(this.text.slice(this.lineStartIndices[this.lineStartIndices.length - 1]));
+
+        // Cache for comments found using getComments().
+        this._commentCache = new WeakMap();
+
+        // don't allow further modification of this object
+        Object.freeze(this);
+        Object.freeze(this.lines);
+    }
+
+    /**
+     * Split the source code into multiple lines based on the line delimiters.
+     * @param {string} text Source code as a string.
+     * @returns {string[]} Array of source code lines.
+     * @public
+     */
+    static splitLines(text) {
+        return text.split(astUtils.createGlobalLinebreakMatcher());
+    }
+
+    /**
+     * Gets the source code for the given node.
+     * @param {ASTNode} [node] The AST node to get the text for.
+     * @param {int} [beforeCount] The number of characters before the node to retrieve.
+     * @param {int} [afterCount] The number of characters after the node to retrieve.
+     * @returns {string} The text representing the AST node.
+     * @public
+     */
+    getText(node, beforeCount, afterCount) {
+        if (node) {
+            return this.text.slice(Math.max(node.range[0] - (beforeCount || 0), 0),
+                node.range[1] + (afterCount || 0));
+        }
+        return this.text;
+    }
+
+    /**
+     * Gets the entire source text split into an array of lines.
+     * @returns {Array} The source text as an array of lines.
+     * @public
+     */
+    getLines() {
+        return this.lines;
+    }
+
+    /**
+     * Retrieves an array containing all comments in the source code.
+     * @returns {ASTNode[]} An array of comment nodes.
+     * @public
+     */
+    getAllComments() {
+        return this.ast.comments;
+    }
+
+    /**
+     * Gets all comments for the given node.
+     * @param {ASTNode} node The AST node to get the comments for.
+     * @returns {Object} An object containing a leading and trailing array
+     *      of comments indexed by their position.
+     * @public
+     * @deprecated replaced by getCommentsBefore(), getCommentsAfter(), and getCommentsInside().
+     */
+    getComments(node) {
+        if (this._commentCache.has(node)) {
+            return this._commentCache.get(node);
+        }
+
+        const comments = {
+            leading: [],
+            trailing: []
+        };
+
+        /*
+         * Return all comments as leading comments of the Program node when
+         * there is no executable code.
+         */
+        if (node.type === "Program") {
+            if (node.body.length === 0) {
+                comments.leading = node.comments;
+            }
+        } else {
+
+            /*
+             * Return comments as trailing comments of nodes that only contain
+             * comments (to mimic the comment attachment behavior present in Espree).
+             */
+            if ((node.type === "BlockStatement" || node.type === "ClassBody") && node.body.length === 0 ||
+                node.type === "ObjectExpression" && node.properties.length === 0 ||
+                node.type === "ArrayExpression" && node.elements.length === 0 ||
+                node.type === "SwitchStatement" && node.cases.length === 0
+            ) {
+                comments.trailing = this.getTokens(node, {
+                    includeComments: true,
+                    filter: isCommentToken
+                });
+            }
+
+            /*
+             * Iterate over tokens before and after node and collect comment tokens.
+             * Do not include comments that exist outside of the parent node
+             * to avoid duplication.
+             */
+            let currentToken = this.getTokenBefore(node, { includeComments: true });
+
+            while (currentToken && isCommentToken(currentToken)) {
+                if (node.parent && node.parent.type !== "Program" && (currentToken.start < node.parent.start)) {
+                    break;
+                }
+                comments.leading.push(currentToken);
+                currentToken = this.getTokenBefore(currentToken, { includeComments: true });
+            }
+
+            comments.leading.reverse();
+
+            currentToken = this.getTokenAfter(node, { includeComments: true });
+
+            while (currentToken && isCommentToken(currentToken)) {
+                if (node.parent && node.parent.type !== "Program" && (currentToken.end > node.parent.end)) {
+                    break;
+                }
+                comments.trailing.push(currentToken);
+                currentToken = this.getTokenAfter(currentToken, { includeComments: true });
+            }
+        }
+
+        this._commentCache.set(node, comments);
+        return comments;
+    }
+
+    /**
+     * Retrieves the JSDoc comment for a given node.
+     * @param {ASTNode} node The AST node to get the comment for.
+     * @returns {Token|null} The Block comment token containing the JSDoc comment
+     *      for the given node or null if not found.
+     * @public
+     * @deprecated
+     */
+    getJSDocComment(node) {
+
+        /**
+         * Checks for the presence of a JSDoc comment for the given node and returns it.
+         * @param {ASTNode} astNode The AST node to get the comment for.
+         * @returns {Token|null} The Block comment token containing the JSDoc comment
+         *      for the given node or null if not found.
+         * @private
+         */
+        const findJSDocComment = astNode => {
+            const tokenBefore = this.getTokenBefore(astNode, { includeComments: true });
+
+            if (
+                tokenBefore &&
+                isCommentToken(tokenBefore) &&
+                tokenBefore.type === "Block" &&
+                tokenBefore.value.charAt(0) === "*" &&
+                astNode.loc.start.line - tokenBefore.loc.end.line <= 1
+            ) {
+                return tokenBefore;
+            }
+
+            return null;
+        };
+        let parent = node.parent;
+
+        switch (node.type) {
+            case "ClassDeclaration":
+            case "FunctionDeclaration":
+                return findJSDocComment(looksLikeExport(parent) ? parent : node);
+
+            case "ClassExpression":
+                return findJSDocComment(parent.parent);
+
+            case "ArrowFunctionExpression":
+            case "FunctionExpression":
+                if (parent.type !== "CallExpression" && parent.type !== "NewExpression") {
+                    while (
+                        !this.getCommentsBefore(parent).length &&
+                        !/Function/u.test(parent.type) &&
+                        parent.type !== "MethodDefinition" &&
+                        parent.type !== "Property"
+                    ) {
+                        parent = parent.parent;
+
+                        if (!parent) {
+                            break;
+                        }
+                    }
+
+                    if (parent && parent.type !== "FunctionDeclaration" && parent.type !== "Program") {
+                        return findJSDocComment(parent);
+                    }
+                }
+
+                return findJSDocComment(node);
+
+            // falls through
+            default:
+                return null;
+        }
+    }
+
+    /**
+     * Gets the deepest node containing a range index.
+     * @param {int} index Range index of the desired node.
+     * @returns {ASTNode} The node if found or null if not found.
+     * @public
+     */
+    getNodeByRangeIndex(index) {
+        let result = null;
+
+        Traverser.traverse(this.ast, {
+            visitorKeys: this.visitorKeys,
+            enter(node) {
+                if (node.range[0] <= index && index < node.range[1]) {
+                    result = node;
+                } else {
+                    this.skip();
+                }
+            },
+            leave(node) {
+                if (node === result) {
+                    this.break();
+                }
+            }
+        });
+
+        return result;
+    }
+
+    /**
+     * Determines if two nodes or tokens have at least one whitespace character
+     * between them. Order does not matter. Returns false if the given nodes or
+     * tokens overlap.
+     * @param {ASTNode|Token} first The first node or token to check between.
+     * @param {ASTNode|Token} second The second node or token to check between.
+     * @returns {boolean} True if there is a whitespace character between
+     * any of the tokens found between the two given nodes or tokens.
+     * @public
+     */
+    isSpaceBetween(first, second) {
+        return isSpaceBetween(this, first, second, false);
+    }
+
+    /**
+     * Determines if two nodes or tokens have at least one whitespace character
+     * between them. Order does not matter. Returns false if the given nodes or
+     * tokens overlap.
+     * For backward compatibility, this method returns true if there are
+     * `JSXText` tokens that contain whitespaces between the two.
+     * @param {ASTNode|Token} first The first node or token to check between.
+     * @param {ASTNode|Token} second The second node or token to check between.
+     * @returns {boolean} True if there is a whitespace character between
+     * any of the tokens found between the two given nodes or tokens.
+     * @deprecated in favor of isSpaceBetween().
+     * @public
+     */
+    isSpaceBetweenTokens(first, second) {
+        return isSpaceBetween(this, first, second, true);
+    }
+
+    /**
+     * Converts a source text index into a (line, column) pair.
+     * @param {number} index The index of a character in a file
+     * @throws {TypeError} If non-numeric index or index out of range.
+     * @returns {Object} A {line, column} location object with a 0-indexed column
+     * @public
+     */
+    getLocFromIndex(index) {
+        if (typeof index !== "number") {
+            throw new TypeError("Expected `index` to be a number.");
+        }
+
+        if (index < 0 || index > this.text.length) {
+            throw new RangeError(`Index out of range (requested index ${index}, but source text has length ${this.text.length}).`);
+        }
+
+        /*
+         * For an argument of this.text.length, return the location one "spot" past the last character
+         * of the file. If the last character is a linebreak, the location will be column 0 of the next
+         * line; otherwise, the location will be in the next column on the same line.
+         *
+         * See getIndexFromLoc for the motivation for this special case.
+         */
+        if (index === this.text.length) {
+            return { line: this.lines.length, column: this.lines[this.lines.length - 1].length };
+        }
+
+        /*
+         * To figure out which line index is on, determine the last place at which index could
+         * be inserted into lineStartIndices to keep the list sorted.
+         */
+        const lineNumber = index >= this.lineStartIndices[this.lineStartIndices.length - 1]
+            ? this.lineStartIndices.length
+            : this.lineStartIndices.findIndex(el => index < el);
+
+        return { line: lineNumber, column: index - this.lineStartIndices[lineNumber - 1] };
+    }
+
+    /**
+     * Converts a (line, column) pair into a range index.
+     * @param {Object} loc A line/column location
+     * @param {number} loc.line The line number of the location (1-indexed)
+     * @param {number} loc.column The column number of the location (0-indexed)
+     * @throws {TypeError|RangeError} If `loc` is not an object with a numeric
+     *   `line` and `column`, if the `line` is less than or equal to zero or
+     *   the line or column is out of the expected range.
+     * @returns {number} The range index of the location in the file.
+     * @public
+     */
+    getIndexFromLoc(loc) {
+        if (typeof loc !== "object" || typeof loc.line !== "number" || typeof loc.column !== "number") {
+            throw new TypeError("Expected `loc` to be an object with numeric `line` and `column` properties.");
+        }
+
+        if (loc.line <= 0) {
+            throw new RangeError(`Line number out of range (line ${loc.line} requested). Line numbers should be 1-based.`);
+        }
+
+        if (loc.line > this.lineStartIndices.length) {
+            throw new RangeError(`Line number out of range (line ${loc.line} requested, but only ${this.lineStartIndices.length} lines present).`);
+        }
+
+        const lineStartIndex = this.lineStartIndices[loc.line - 1];
+        const lineEndIndex = loc.line === this.lineStartIndices.length ? this.text.length : this.lineStartIndices[loc.line];
+        const positionIndex = lineStartIndex + loc.column;
+
+        /*
+         * By design, getIndexFromLoc({ line: lineNum, column: 0 }) should return the start index of
+         * the given line, provided that the line number is valid element of this.lines. Since the
+         * last element of this.lines is an empty string for files with trailing newlines, add a
+         * special case where getting the index for the first location after the end of the file
+         * will return the length of the file, rather than throwing an error. This allows rules to
+         * use getIndexFromLoc consistently without worrying about edge cases at the end of a file.
+         */
+        if (
+            loc.line === this.lineStartIndices.length && positionIndex > lineEndIndex ||
+            loc.line < this.lineStartIndices.length && positionIndex >= lineEndIndex
+        ) {
+            throw new RangeError(`Column number out of range (column ${loc.column} requested, but the length of line ${loc.line} is ${lineEndIndex - lineStartIndex}).`);
+        }
+
+        return positionIndex;
+    }
+
+    /**
+     * Gets the scope for the given node
+     * @param {ASTNode} currentNode The node to get the scope of
+     * @returns {eslint-scope.Scope} The scope information for this node
+     * @throws {TypeError} If the `currentNode` argument is missing.
+     */
+    getScope(currentNode) {
+
+        if (!currentNode) {
+            throw new TypeError("Missing required argument: node.");
+        }
+
+        // check cache first
+        const cache = this[caches].get("scopes");
+        const cachedScope = cache.get(currentNode);
+
+        if (cachedScope) {
+            return cachedScope;
+        }
+
+        // On Program node, get the outermost scope to avoid return Node.js special function scope or ES modules scope.
+        const inner = currentNode.type !== "Program";
+
+        for (let node = currentNode; node; node = node.parent) {
+            const scope = this.scopeManager.acquire(node, inner);
+
+            if (scope) {
+                if (scope.type === "function-expression-name") {
+                    cache.set(currentNode, scope.childScopes[0]);
+                    return scope.childScopes[0];
+                }
+
+                cache.set(currentNode, scope);
+                return scope;
+            }
+        }
+
+        cache.set(currentNode, this.scopeManager.scopes[0]);
+        return this.scopeManager.scopes[0];
+    }
+
+    /**
+     * Get the variables that `node` defines.
+     * This is a convenience method that passes through
+     * to the same method on the `scopeManager`.
+     * @param {ASTNode} node The node for which the variables are obtained.
+     * @returns {Array<Variable>} An array of variable nodes representing
+     *      the variables that `node` defines.
+     */
+    getDeclaredVariables(node) {
+        return this.scopeManager.getDeclaredVariables(node);
+    }
+
+    /* eslint-disable class-methods-use-this -- node is owned by SourceCode */
+    /**
+     * Gets all the ancestors of a given node
+     * @param {ASTNode} node The node
+     * @returns {Array<ASTNode>} All the ancestor nodes in the AST, not including the provided node, starting
+     * from the root node at index 0 and going inwards to the parent node.
+     * @throws {TypeError} When `node` is missing.
+     */
+    getAncestors(node) {
+
+        if (!node) {
+            throw new TypeError("Missing required argument: node.");
+        }
+
+        const ancestorsStartingAtParent = [];
+
+        for (let ancestor = node.parent; ancestor; ancestor = ancestor.parent) {
+            ancestorsStartingAtParent.push(ancestor);
+        }
+
+        return ancestorsStartingAtParent.reverse();
+    }
+    /* eslint-enable class-methods-use-this -- node is owned by SourceCode */
+
+    /**
+     * Marks a variable as used in the current scope
+     * @param {string} name The name of the variable to mark as used.
+     * @param {ASTNode} [refNode] The closest node to the variable reference.
+     * @returns {boolean} True if the variable was found and marked as used, false if not.
+     */
+    markVariableAsUsed(name, refNode = this.ast) {
+
+        const currentScope = this.getScope(refNode);
+        let initialScope = currentScope;
+
+        /*
+         * When we are in an ESM or CommonJS module, we need to start searching
+         * from the top-level scope, not the global scope. For ESM the top-level
+         * scope is the module scope; for CommonJS the top-level scope is the
+         * outer function scope.
+         *
+         * Without this check, we might miss a variable declared with `var` at
+         * the top-level because it won't exist in the global scope.
+         */
+        if (
+            currentScope.type === "global" &&
+            currentScope.childScopes.length > 0 &&
+
+            // top-level scopes refer to a `Program` node
+            currentScope.childScopes[0].block === this.ast
+        ) {
+            initialScope = currentScope.childScopes[0];
+        }
+
+        for (let scope = initialScope; scope; scope = scope.upper) {
+            const variable = scope.variables.find(scopeVar => scopeVar.name === name);
+
+            if (variable) {
+                variable.eslintUsed = true;
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+
+    /**
+     * Returns an array of all inline configuration nodes found in the
+     * source code.
+     * @returns {Array<Token>} An array of all inline configuration nodes.
+     */
+    getInlineConfigNodes() {
+
+        // check the cache first
+        let configNodes = this[caches].get("configNodes");
+
+        if (configNodes) {
+            return configNodes;
+        }
+
+        // calculate fresh config nodes
+        configNodes = this.ast.comments.filter(comment => {
+
+            // shebang comments are never directives
+            if (comment.type === "Shebang") {
+                return false;
+            }
+
+            const { directivePart } = commentParser.extractDirectiveComment(comment.value);
+
+            const directiveMatch = directivesPattern.exec(directivePart);
+
+            if (!directiveMatch) {
+                return false;
+            }
+
+            // only certain comment types are supported as line comments
+            return comment.type !== "Line" || !!/^eslint-disable-(next-)?line$/u.test(directiveMatch[1]);
+        });
+
+        this[caches].set("configNodes", configNodes);
+
+        return configNodes;
+    }
+
+    /**
+     * Applies language options sent in from the core.
+     * @param {Object} languageOptions The language options for this run.
+     * @returns {void}
+     */
+    applyLanguageOptions(languageOptions) {
+
+        /*
+         * Add configured globals and language globals
+         *
+         * Using Object.assign instead of object spread for performance reasons
+         * https://github.com/eslint/eslint/issues/16302
+         */
+        const configGlobals = Object.assign(
+            Object.create(null), // https://github.com/eslint/eslint/issues/18363
+            getGlobalsForEcmaVersion(languageOptions.ecmaVersion),
+            languageOptions.sourceType === "commonjs" ? globals.commonjs : void 0,
+            languageOptions.globals
+        );
+        const varsCache = this[caches].get("vars");
+
+        varsCache.set("configGlobals", configGlobals);
+    }
+
+    /**
+     * Applies configuration found inside of the source code. This method is only
+     * called when ESLint is running with inline configuration allowed.
+     * @returns {{problems:Array<Problem>,configs:{config:FlatConfigArray,node:ASTNode}}} Information
+     *      that ESLint needs to further process the inline configuration.
+     */
+    applyInlineConfig() {
+
+        const problems = [];
+        const configs = [];
+        const exportedVariables = {};
+        const inlineGlobals = Object.create(null);
+
+        this.getInlineConfigNodes().forEach(comment => {
+
+            const { directiveText, directiveValue } = commentParser.parseDirective(comment);
+
+            switch (directiveText) {
+                case "exported":
+                    Object.assign(exportedVariables, commentParser.parseStringConfig(directiveValue, comment));
+                    break;
+
+                case "globals":
+                case "global":
+                    for (const [id, { value }] of Object.entries(commentParser.parseStringConfig(directiveValue, comment))) {
+                        let normalizedValue;
+
+                        try {
+                            normalizedValue = normalizeConfigGlobal(value);
+                        } catch (err) {
+                            problems.push({
+                                ruleId: null,
+                                loc: comment.loc,
+                                message: err.message
+                            });
+                            continue;
+                        }
+
+                        if (inlineGlobals[id]) {
+                            inlineGlobals[id].comments.push(comment);
+                            inlineGlobals[id].value = normalizedValue;
+                        } else {
+                            inlineGlobals[id] = {
+                                comments: [comment],
+                                value: normalizedValue
+                            };
+                        }
+                    }
+                    break;
+
+                case "eslint": {
+                    const parseResult = commentParser.parseJsonConfig(directiveValue, comment.loc);
+
+                    if (parseResult.success) {
+                        configs.push({
+                            config: {
+                                rules: parseResult.config
+                            },
+                            node: comment
+                        });
+                    } else {
+                        problems.push(parseResult.error);
+                    }
+
+                    break;
+                }
+
+                // no default
+            }
+        });
+
+        // save all the new variables for later
+        const varsCache = this[caches].get("vars");
+
+        varsCache.set("inlineGlobals", inlineGlobals);
+        varsCache.set("exportedVariables", exportedVariables);
+
+        return {
+            configs,
+            problems
+        };
+    }
+
+    /**
+     * Called by ESLint core to indicate that it has finished providing
+     * information. We now add in all the missing variables and ensure that
+     * state-changing methods cannot be called by rules.
+     * @returns {void}
+     */
+    finalize() {
+
+        // Step 1: ensure that all of the necessary variables are up to date
+        const varsCache = this[caches].get("vars");
+        const globalScope = this.scopeManager.scopes[0];
+        const configGlobals = varsCache.get("configGlobals");
+        const inlineGlobals = varsCache.get("inlineGlobals");
+        const exportedVariables = varsCache.get("exportedVariables");
+
+        addDeclaredGlobals(globalScope, configGlobals, inlineGlobals);
+
+        if (exportedVariables) {
+            markExportedVariables(globalScope, exportedVariables);
+        }
+
+    }
+
+}
+
+module.exports = SourceCode;
Index: frontend/node_modules/eslint/lib/source-code/token-store/backward-token-comment-cursor.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/token-store/backward-token-comment-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/token-store/backward-token-comment-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,57 @@
+/**
+ * @fileoverview Define the cursor which iterates tokens and comments in reverse.
+ * @author Toru Nagashima
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const Cursor = require("./cursor");
+const utils = require("./utils");
+
+//------------------------------------------------------------------------------
+// Exports
+//------------------------------------------------------------------------------
+
+/**
+ * The cursor which iterates tokens and comments in reverse.
+ */
+module.exports = class BackwardTokenCommentCursor extends Cursor {
+
+    /**
+     * Initializes this cursor.
+     * @param {Token[]} tokens The array of tokens.
+     * @param {Comment[]} comments The array of comments.
+     * @param {Object} indexMap The map from locations to indices in `tokens`.
+     * @param {number} startLoc The start location of the iteration range.
+     * @param {number} endLoc The end location of the iteration range.
+     */
+    constructor(tokens, comments, indexMap, startLoc, endLoc) {
+        super();
+        this.tokens = tokens;
+        this.comments = comments;
+        this.tokenIndex = utils.getLastIndex(tokens, indexMap, endLoc);
+        this.commentIndex = utils.search(comments, endLoc) - 1;
+        this.border = startLoc;
+    }
+
+    /** @inheritdoc */
+    moveNext() {
+        const token = (this.tokenIndex >= 0) ? this.tokens[this.tokenIndex] : null;
+        const comment = (this.commentIndex >= 0) ? this.comments[this.commentIndex] : null;
+
+        if (token && (!comment || token.range[1] > comment.range[1])) {
+            this.current = token;
+            this.tokenIndex -= 1;
+        } else if (comment) {
+            this.current = comment;
+            this.commentIndex -= 1;
+        } else {
+            this.current = null;
+        }
+
+        return Boolean(this.current) && (this.border === -1 || this.current.range[0] >= this.border);
+    }
+};
Index: frontend/node_modules/eslint/lib/source-code/token-store/backward-token-cursor.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/token-store/backward-token-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/token-store/backward-token-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,58 @@
+/**
+ * @fileoverview Define the cursor which iterates tokens only in reverse.
+ * @author Toru Nagashima
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const Cursor = require("./cursor");
+const utils = require("./utils");
+
+//------------------------------------------------------------------------------
+// Exports
+//------------------------------------------------------------------------------
+
+/**
+ * The cursor which iterates tokens only in reverse.
+ */
+module.exports = class BackwardTokenCursor extends Cursor {
+
+    /**
+     * Initializes this cursor.
+     * @param {Token[]} tokens The array of tokens.
+     * @param {Comment[]} comments The array of comments.
+     * @param {Object} indexMap The map from locations to indices in `tokens`.
+     * @param {number} startLoc The start location of the iteration range.
+     * @param {number} endLoc The end location of the iteration range.
+     */
+    constructor(tokens, comments, indexMap, startLoc, endLoc) {
+        super();
+        this.tokens = tokens;
+        this.index = utils.getLastIndex(tokens, indexMap, endLoc);
+        this.indexEnd = utils.getFirstIndex(tokens, indexMap, startLoc);
+    }
+
+    /** @inheritdoc */
+    moveNext() {
+        if (this.index >= this.indexEnd) {
+            this.current = this.tokens[this.index];
+            this.index -= 1;
+            return true;
+        }
+        return false;
+    }
+
+    /*
+     *
+     * Shorthand for performance.
+     *
+     */
+
+    /** @inheritdoc */
+    getOneToken() {
+        return (this.index >= this.indexEnd) ? this.tokens[this.index] : null;
+    }
+};
Index: frontend/node_modules/eslint/lib/source-code/token-store/cursor.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/token-store/cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/token-store/cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,76 @@
+/**
+ * @fileoverview Define the abstract class about cursors which iterate tokens.
+ * @author Toru Nagashima
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Exports
+//------------------------------------------------------------------------------
+
+/**
+ * The abstract class about cursors which iterate tokens.
+ *
+ * This class has 2 abstract methods.
+ *
+ * - `current: Token | Comment | null` ... The current token.
+ * - `moveNext(): boolean` ... Moves this cursor to the next token. If the next token didn't exist, it returns `false`.
+ *
+ * This is similar to ES2015 Iterators.
+ * However, Iterators were slow (at 2017-01), so I created this class as similar to C# IEnumerable.
+ *
+ * There are the following known sub classes.
+ *
+ * - ForwardTokenCursor .......... The cursor which iterates tokens only.
+ * - BackwardTokenCursor ......... The cursor which iterates tokens only in reverse.
+ * - ForwardTokenCommentCursor ... The cursor which iterates tokens and comments.
+ * - BackwardTokenCommentCursor .. The cursor which iterates tokens and comments in reverse.
+ * - DecorativeCursor
+ *     - FilterCursor ............ The cursor which ignores the specified tokens.
+ *     - SkipCursor .............. The cursor which ignores the first few tokens.
+ *     - LimitCursor ............. The cursor which limits the count of tokens.
+ *
+ */
+module.exports = class Cursor {
+
+    /**
+     * Initializes this cursor.
+     */
+    constructor() {
+        this.current = null;
+    }
+
+    /**
+     * Gets the first token.
+     * This consumes this cursor.
+     * @returns {Token|Comment} The first token or null.
+     */
+    getOneToken() {
+        return this.moveNext() ? this.current : null;
+    }
+
+    /**
+     * Gets the first tokens.
+     * This consumes this cursor.
+     * @returns {(Token|Comment)[]} All tokens.
+     */
+    getAllTokens() {
+        const tokens = [];
+
+        while (this.moveNext()) {
+            tokens.push(this.current);
+        }
+
+        return tokens;
+    }
+
+    /**
+     * Moves this cursor to the next token.
+     * @returns {boolean} `true` if the next token exists.
+     * @abstract
+     */
+    /* c8 ignore next */
+    moveNext() { // eslint-disable-line class-methods-use-this -- Unused
+        throw new Error("Not implemented.");
+    }
+};
Index: frontend/node_modules/eslint/lib/source-code/token-store/cursors.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/token-store/cursors.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/token-store/cursors.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,90 @@
+/**
+ * @fileoverview Define 2 token factories; forward and backward.
+ * @author Toru Nagashima
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const BackwardTokenCommentCursor = require("./backward-token-comment-cursor");
+const BackwardTokenCursor = require("./backward-token-cursor");
+const FilterCursor = require("./filter-cursor");
+const ForwardTokenCommentCursor = require("./forward-token-comment-cursor");
+const ForwardTokenCursor = require("./forward-token-cursor");
+const LimitCursor = require("./limit-cursor");
+const SkipCursor = require("./skip-cursor");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * The cursor factory.
+ * @private
+ */
+class CursorFactory {
+
+    /**
+     * Initializes this cursor.
+     * @param {Function} TokenCursor The class of the cursor which iterates tokens only.
+     * @param {Function} TokenCommentCursor The class of the cursor which iterates the mix of tokens and comments.
+     */
+    constructor(TokenCursor, TokenCommentCursor) {
+        this.TokenCursor = TokenCursor;
+        this.TokenCommentCursor = TokenCommentCursor;
+    }
+
+    /**
+     * Creates a base cursor instance that can be decorated by createCursor.
+     * @param {Token[]} tokens The array of tokens.
+     * @param {Comment[]} comments The array of comments.
+     * @param {Object} indexMap The map from locations to indices in `tokens`.
+     * @param {number} startLoc The start location of the iteration range.
+     * @param {number} endLoc The end location of the iteration range.
+     * @param {boolean} includeComments The flag to iterate comments as well.
+     * @returns {Cursor} The created base cursor.
+     */
+    createBaseCursor(tokens, comments, indexMap, startLoc, endLoc, includeComments) {
+        const Cursor = includeComments ? this.TokenCommentCursor : this.TokenCursor;
+
+        return new Cursor(tokens, comments, indexMap, startLoc, endLoc);
+    }
+
+    /**
+     * Creates a cursor that iterates tokens with normalized options.
+     * @param {Token[]} tokens The array of tokens.
+     * @param {Comment[]} comments The array of comments.
+     * @param {Object} indexMap The map from locations to indices in `tokens`.
+     * @param {number} startLoc The start location of the iteration range.
+     * @param {number} endLoc The end location of the iteration range.
+     * @param {boolean} includeComments The flag to iterate comments as well.
+     * @param {Function|null} filter The predicate function to choose tokens.
+     * @param {number} skip The count of tokens the cursor skips.
+     * @param {number} count The maximum count of tokens the cursor iterates. Zero is no iteration for backward compatibility.
+     * @returns {Cursor} The created cursor.
+     */
+    createCursor(tokens, comments, indexMap, startLoc, endLoc, includeComments, filter, skip, count) {
+        let cursor = this.createBaseCursor(tokens, comments, indexMap, startLoc, endLoc, includeComments);
+
+        if (filter) {
+            cursor = new FilterCursor(cursor, filter);
+        }
+        if (skip >= 1) {
+            cursor = new SkipCursor(cursor, skip);
+        }
+        if (count >= 0) {
+            cursor = new LimitCursor(cursor, count);
+        }
+
+        return cursor;
+    }
+}
+
+//------------------------------------------------------------------------------
+// Exports
+//------------------------------------------------------------------------------
+
+exports.forward = new CursorFactory(ForwardTokenCursor, ForwardTokenCommentCursor);
+exports.backward = new CursorFactory(BackwardTokenCursor, BackwardTokenCommentCursor);
Index: frontend/node_modules/eslint/lib/source-code/token-store/decorative-cursor.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/token-store/decorative-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/token-store/decorative-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,39 @@
+/**
+ * @fileoverview Define the abstract class about cursors which manipulate another cursor.
+ * @author Toru Nagashima
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const Cursor = require("./cursor");
+
+//------------------------------------------------------------------------------
+// Exports
+//------------------------------------------------------------------------------
+
+/**
+ * The abstract class about cursors which manipulate another cursor.
+ */
+module.exports = class DecorativeCursor extends Cursor {
+
+    /**
+     * Initializes this cursor.
+     * @param {Cursor} cursor The cursor to be decorated.
+     */
+    constructor(cursor) {
+        super();
+        this.cursor = cursor;
+    }
+
+    /** @inheritdoc */
+    moveNext() {
+        const retv = this.cursor.moveNext();
+
+        this.current = this.cursor.current;
+
+        return retv;
+    }
+};
Index: frontend/node_modules/eslint/lib/source-code/token-store/filter-cursor.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/token-store/filter-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/token-store/filter-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,43 @@
+/**
+ * @fileoverview Define the cursor which ignores specified tokens.
+ * @author Toru Nagashima
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const DecorativeCursor = require("./decorative-cursor");
+
+//------------------------------------------------------------------------------
+// Exports
+//------------------------------------------------------------------------------
+
+/**
+ * The decorative cursor which ignores specified tokens.
+ */
+module.exports = class FilterCursor extends DecorativeCursor {
+
+    /**
+     * Initializes this cursor.
+     * @param {Cursor} cursor The cursor to be decorated.
+     * @param {Function} predicate The predicate function to decide tokens this cursor iterates.
+     */
+    constructor(cursor, predicate) {
+        super(cursor);
+        this.predicate = predicate;
+    }
+
+    /** @inheritdoc */
+    moveNext() {
+        const predicate = this.predicate;
+
+        while (super.moveNext()) {
+            if (predicate(this.current)) {
+                return true;
+            }
+        }
+        return false;
+    }
+};
Index: frontend/node_modules/eslint/lib/source-code/token-store/forward-token-comment-cursor.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/token-store/forward-token-comment-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/token-store/forward-token-comment-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,57 @@
+/**
+ * @fileoverview Define the cursor which iterates tokens and comments.
+ * @author Toru Nagashima
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const Cursor = require("./cursor");
+const utils = require("./utils");
+
+//------------------------------------------------------------------------------
+// Exports
+//------------------------------------------------------------------------------
+
+/**
+ * The cursor which iterates tokens and comments.
+ */
+module.exports = class ForwardTokenCommentCursor extends Cursor {
+
+    /**
+     * Initializes this cursor.
+     * @param {Token[]} tokens The array of tokens.
+     * @param {Comment[]} comments The array of comments.
+     * @param {Object} indexMap The map from locations to indices in `tokens`.
+     * @param {number} startLoc The start location of the iteration range.
+     * @param {number} endLoc The end location of the iteration range.
+     */
+    constructor(tokens, comments, indexMap, startLoc, endLoc) {
+        super();
+        this.tokens = tokens;
+        this.comments = comments;
+        this.tokenIndex = utils.getFirstIndex(tokens, indexMap, startLoc);
+        this.commentIndex = utils.search(comments, startLoc);
+        this.border = endLoc;
+    }
+
+    /** @inheritdoc */
+    moveNext() {
+        const token = (this.tokenIndex < this.tokens.length) ? this.tokens[this.tokenIndex] : null;
+        const comment = (this.commentIndex < this.comments.length) ? this.comments[this.commentIndex] : null;
+
+        if (token && (!comment || token.range[0] < comment.range[0])) {
+            this.current = token;
+            this.tokenIndex += 1;
+        } else if (comment) {
+            this.current = comment;
+            this.commentIndex += 1;
+        } else {
+            this.current = null;
+        }
+
+        return Boolean(this.current) && (this.border === -1 || this.current.range[1] <= this.border);
+    }
+};
Index: frontend/node_modules/eslint/lib/source-code/token-store/forward-token-cursor.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/token-store/forward-token-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/token-store/forward-token-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,63 @@
+/**
+ * @fileoverview Define the cursor which iterates tokens only.
+ * @author Toru Nagashima
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const Cursor = require("./cursor");
+const utils = require("./utils");
+
+//------------------------------------------------------------------------------
+// Exports
+//------------------------------------------------------------------------------
+
+/**
+ * The cursor which iterates tokens only.
+ */
+module.exports = class ForwardTokenCursor extends Cursor {
+
+    /**
+     * Initializes this cursor.
+     * @param {Token[]} tokens The array of tokens.
+     * @param {Comment[]} comments The array of comments.
+     * @param {Object} indexMap The map from locations to indices in `tokens`.
+     * @param {number} startLoc The start location of the iteration range.
+     * @param {number} endLoc The end location of the iteration range.
+     */
+    constructor(tokens, comments, indexMap, startLoc, endLoc) {
+        super();
+        this.tokens = tokens;
+        this.index = utils.getFirstIndex(tokens, indexMap, startLoc);
+        this.indexEnd = utils.getLastIndex(tokens, indexMap, endLoc);
+    }
+
+    /** @inheritdoc */
+    moveNext() {
+        if (this.index <= this.indexEnd) {
+            this.current = this.tokens[this.index];
+            this.index += 1;
+            return true;
+        }
+        return false;
+    }
+
+    /*
+     *
+     * Shorthand for performance.
+     *
+     */
+
+    /** @inheritdoc */
+    getOneToken() {
+        return (this.index <= this.indexEnd) ? this.tokens[this.index] : null;
+    }
+
+    /** @inheritdoc */
+    getAllTokens() {
+        return this.tokens.slice(this.index, this.indexEnd + 1);
+    }
+};
Index: frontend/node_modules/eslint/lib/source-code/token-store/index.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/token-store/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/token-store/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,627 @@
+/**
+ * @fileoverview Object to handle access and retrieval of tokens.
+ * @author Brandon Mills
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const assert = require("assert");
+const { isCommentToken } = require("@eslint-community/eslint-utils");
+const cursors = require("./cursors");
+const ForwardTokenCursor = require("./forward-token-cursor");
+const PaddedTokenCursor = require("./padded-token-cursor");
+const utils = require("./utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const TOKENS = Symbol("tokens");
+const COMMENTS = Symbol("comments");
+const INDEX_MAP = Symbol("indexMap");
+
+/**
+ * Creates the map from locations to indices in `tokens`.
+ *
+ * The first/last location of tokens is mapped to the index of the token.
+ * The first/last location of comments is mapped to the index of the next token of each comment.
+ * @param {Token[]} tokens The array of tokens.
+ * @param {Comment[]} comments The array of comments.
+ * @returns {Object} The map from locations to indices in `tokens`.
+ * @private
+ */
+function createIndexMap(tokens, comments) {
+    const map = Object.create(null);
+    let tokenIndex = 0;
+    let commentIndex = 0;
+    let nextStart = 0;
+    let range = null;
+
+    while (tokenIndex < tokens.length || commentIndex < comments.length) {
+        nextStart = (commentIndex < comments.length) ? comments[commentIndex].range[0] : Number.MAX_SAFE_INTEGER;
+        while (tokenIndex < tokens.length && (range = tokens[tokenIndex].range)[0] < nextStart) {
+            map[range[0]] = tokenIndex;
+            map[range[1] - 1] = tokenIndex;
+            tokenIndex += 1;
+        }
+
+        nextStart = (tokenIndex < tokens.length) ? tokens[tokenIndex].range[0] : Number.MAX_SAFE_INTEGER;
+        while (commentIndex < comments.length && (range = comments[commentIndex].range)[0] < nextStart) {
+            map[range[0]] = tokenIndex;
+            map[range[1] - 1] = tokenIndex;
+            commentIndex += 1;
+        }
+    }
+
+    return map;
+}
+
+/**
+ * Creates the cursor iterates tokens with options.
+ * @param {CursorFactory} factory The cursor factory to initialize cursor.
+ * @param {Token[]} tokens The array of tokens.
+ * @param {Comment[]} comments The array of comments.
+ * @param {Object} indexMap The map from locations to indices in `tokens`.
+ * @param {number} startLoc The start location of the iteration range.
+ * @param {number} endLoc The end location of the iteration range.
+ * @param {number|Function|Object} [opts=0] The option object. If this is a number then it's `opts.skip`. If this is a function then it's `opts.filter`.
+ * @param {boolean} [opts.includeComments=false] The flag to iterate comments as well.
+ * @param {Function|null} [opts.filter=null] The predicate function to choose tokens.
+ * @param {number} [opts.skip=0] The count of tokens the cursor skips.
+ * @returns {Cursor} The created cursor.
+ * @private
+ */
+function createCursorWithSkip(factory, tokens, comments, indexMap, startLoc, endLoc, opts) {
+    let includeComments = false;
+    let skip = 0;
+    let filter = null;
+
+    if (typeof opts === "number") {
+        skip = opts | 0;
+    } else if (typeof opts === "function") {
+        filter = opts;
+    } else if (opts) {
+        includeComments = !!opts.includeComments;
+        skip = opts.skip | 0;
+        filter = opts.filter || null;
+    }
+    assert(skip >= 0, "options.skip should be zero or a positive integer.");
+    assert(!filter || typeof filter === "function", "options.filter should be a function.");
+
+    return factory.createCursor(tokens, comments, indexMap, startLoc, endLoc, includeComments, filter, skip, -1);
+}
+
+/**
+ * Creates the cursor iterates tokens with options.
+ * @param {CursorFactory} factory The cursor factory to initialize cursor.
+ * @param {Token[]} tokens The array of tokens.
+ * @param {Comment[]} comments The array of comments.
+ * @param {Object} indexMap The map from locations to indices in `tokens`.
+ * @param {number} startLoc The start location of the iteration range.
+ * @param {number} endLoc The end location of the iteration range.
+ * @param {number|Function|Object} [opts=0] The option object. If this is a number then it's `opts.count`. If this is a function then it's `opts.filter`.
+ * @param {boolean} [opts.includeComments] The flag to iterate comments as well.
+ * @param {Function|null} [opts.filter=null] The predicate function to choose tokens.
+ * @param {number} [opts.count=0] The maximum count of tokens the cursor iterates. Zero is no iteration for backward compatibility.
+ * @returns {Cursor} The created cursor.
+ * @private
+ */
+function createCursorWithCount(factory, tokens, comments, indexMap, startLoc, endLoc, opts) {
+    let includeComments = false;
+    let count = 0;
+    let countExists = false;
+    let filter = null;
+
+    if (typeof opts === "number") {
+        count = opts | 0;
+        countExists = true;
+    } else if (typeof opts === "function") {
+        filter = opts;
+    } else if (opts) {
+        includeComments = !!opts.includeComments;
+        count = opts.count | 0;
+        countExists = typeof opts.count === "number";
+        filter = opts.filter || null;
+    }
+    assert(count >= 0, "options.count should be zero or a positive integer.");
+    assert(!filter || typeof filter === "function", "options.filter should be a function.");
+
+    return factory.createCursor(tokens, comments, indexMap, startLoc, endLoc, includeComments, filter, 0, countExists ? count : -1);
+}
+
+/**
+ * Creates the cursor iterates tokens with options.
+ * This is overload function of the below.
+ * @param {Token[]} tokens The array of tokens.
+ * @param {Comment[]} comments The array of comments.
+ * @param {Object} indexMap The map from locations to indices in `tokens`.
+ * @param {number} startLoc The start location of the iteration range.
+ * @param {number} endLoc The end location of the iteration range.
+ * @param {Function|Object} opts The option object. If this is a function then it's `opts.filter`.
+ * @param {boolean} [opts.includeComments] The flag to iterate comments as well.
+ * @param {Function|null} [opts.filter=null] The predicate function to choose tokens.
+ * @param {number} [opts.count=0] The maximum count of tokens the cursor iterates. Zero is no iteration for backward compatibility.
+ * @returns {Cursor} The created cursor.
+ * @private
+ */
+/**
+ * Creates the cursor iterates tokens with options.
+ * @param {Token[]} tokens The array of tokens.
+ * @param {Comment[]} comments The array of comments.
+ * @param {Object} indexMap The map from locations to indices in `tokens`.
+ * @param {number} startLoc The start location of the iteration range.
+ * @param {number} endLoc The end location of the iteration range.
+ * @param {number} [beforeCount=0] The number of tokens before the node to retrieve.
+ * @param {boolean} [afterCount=0] The number of tokens after the node to retrieve.
+ * @returns {Cursor} The created cursor.
+ * @private
+ */
+function createCursorWithPadding(tokens, comments, indexMap, startLoc, endLoc, beforeCount, afterCount) {
+    if (typeof beforeCount === "undefined" && typeof afterCount === "undefined") {
+        return new ForwardTokenCursor(tokens, comments, indexMap, startLoc, endLoc);
+    }
+    if (typeof beforeCount === "number" || typeof beforeCount === "undefined") {
+        return new PaddedTokenCursor(tokens, comments, indexMap, startLoc, endLoc, beforeCount | 0, afterCount | 0);
+    }
+    return createCursorWithCount(cursors.forward, tokens, comments, indexMap, startLoc, endLoc, beforeCount);
+}
+
+/**
+ * Gets comment tokens that are adjacent to the current cursor position.
+ * @param {Cursor} cursor A cursor instance.
+ * @returns {Array} An array of comment tokens adjacent to the current cursor position.
+ * @private
+ */
+function getAdjacentCommentTokensFromCursor(cursor) {
+    const tokens = [];
+    let currentToken = cursor.getOneToken();
+
+    while (currentToken && isCommentToken(currentToken)) {
+        tokens.push(currentToken);
+        currentToken = cursor.getOneToken();
+    }
+
+    return tokens;
+}
+
+//------------------------------------------------------------------------------
+// Exports
+//------------------------------------------------------------------------------
+
+/**
+ * The token store.
+ *
+ * This class provides methods to get tokens by locations as fast as possible.
+ * The methods are a part of public API, so we should be careful if it changes this class.
+ *
+ * People can get tokens in O(1) by the hash map which is mapping from the location of tokens/comments to tokens.
+ * Also people can get a mix of tokens and comments in O(log k), the k is the number of comments.
+ * Assuming that comments to be much fewer than tokens, this does not make hash map from token's locations to comments to reduce memory cost.
+ * This uses binary-searching instead for comments.
+ */
+module.exports = class TokenStore {
+
+    /**
+     * Initializes this token store.
+     * @param {Token[]} tokens The array of tokens.
+     * @param {Comment[]} comments The array of comments.
+     */
+    constructor(tokens, comments) {
+        this[TOKENS] = tokens;
+        this[COMMENTS] = comments;
+        this[INDEX_MAP] = createIndexMap(tokens, comments);
+    }
+
+    //--------------------------------------------------------------------------
+    // Gets single token.
+    //--------------------------------------------------------------------------
+
+    /**
+     * Gets the token starting at the specified index.
+     * @param {number} offset Index of the start of the token's range.
+     * @param {Object} [options=0] The option object.
+     * @param {boolean} [options.includeComments=false] The flag to iterate comments as well.
+     * @returns {Token|null} The token starting at index, or null if no such token.
+     */
+    getTokenByRangeStart(offset, options) {
+        const includeComments = options && options.includeComments;
+        const token = cursors.forward.createBaseCursor(
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            offset,
+            -1,
+            includeComments
+        ).getOneToken();
+
+        if (token && token.range[0] === offset) {
+            return token;
+        }
+        return null;
+    }
+
+    /**
+     * Gets the first token of the given node.
+     * @param {ASTNode} node The AST node.
+     * @param {number|Function|Object} [options=0] The option object. If this is a number then it's `options.skip`. If this is a function then it's `options.filter`.
+     * @param {boolean} [options.includeComments=false] The flag to iterate comments as well.
+     * @param {Function|null} [options.filter=null] The predicate function to choose tokens.
+     * @param {number} [options.skip=0] The count of tokens the cursor skips.
+     * @returns {Token|null} An object representing the token.
+     */
+    getFirstToken(node, options) {
+        return createCursorWithSkip(
+            cursors.forward,
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            node.range[0],
+            node.range[1],
+            options
+        ).getOneToken();
+    }
+
+    /**
+     * Gets the last token of the given node.
+     * @param {ASTNode} node The AST node.
+     * @param {number|Function|Object} [options=0] The option object. Same options as getFirstToken()
+     * @returns {Token|null} An object representing the token.
+     */
+    getLastToken(node, options) {
+        return createCursorWithSkip(
+            cursors.backward,
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            node.range[0],
+            node.range[1],
+            options
+        ).getOneToken();
+    }
+
+    /**
+     * Gets the token that precedes a given node or token.
+     * @param {ASTNode|Token|Comment} node The AST node or token.
+     * @param {number|Function|Object} [options=0] The option object. Same options as getFirstToken()
+     * @returns {Token|null} An object representing the token.
+     */
+    getTokenBefore(node, options) {
+        return createCursorWithSkip(
+            cursors.backward,
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            -1,
+            node.range[0],
+            options
+        ).getOneToken();
+    }
+
+    /**
+     * Gets the token that follows a given node or token.
+     * @param {ASTNode|Token|Comment} node The AST node or token.
+     * @param {number|Function|Object} [options=0] The option object. Same options as getFirstToken()
+     * @returns {Token|null} An object representing the token.
+     */
+    getTokenAfter(node, options) {
+        return createCursorWithSkip(
+            cursors.forward,
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            node.range[1],
+            -1,
+            options
+        ).getOneToken();
+    }
+
+    /**
+     * Gets the first token between two non-overlapping nodes.
+     * @param {ASTNode|Token|Comment} left Node before the desired token range.
+     * @param {ASTNode|Token|Comment} right Node after the desired token range.
+     * @param {number|Function|Object} [options=0] The option object. Same options as getFirstToken()
+     * @returns {Token|null} An object representing the token.
+     */
+    getFirstTokenBetween(left, right, options) {
+        return createCursorWithSkip(
+            cursors.forward,
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            left.range[1],
+            right.range[0],
+            options
+        ).getOneToken();
+    }
+
+    /**
+     * Gets the last token between two non-overlapping nodes.
+     * @param {ASTNode|Token|Comment} left Node before the desired token range.
+     * @param {ASTNode|Token|Comment} right Node after the desired token range.
+     * @param {number|Function|Object} [options=0] The option object. Same options as getFirstToken()
+     * @returns {Token|null} An object representing the token.
+     */
+    getLastTokenBetween(left, right, options) {
+        return createCursorWithSkip(
+            cursors.backward,
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            left.range[1],
+            right.range[0],
+            options
+        ).getOneToken();
+    }
+
+    /**
+     * Gets the token that precedes a given node or token in the token stream.
+     * This is defined for backward compatibility. Use `includeComments` option instead.
+     * TODO: We have a plan to remove this in a future major version.
+     * @param {ASTNode|Token|Comment} node The AST node or token.
+     * @param {number} [skip=0] A number of tokens to skip.
+     * @returns {Token|null} An object representing the token.
+     * @deprecated
+     */
+    getTokenOrCommentBefore(node, skip) {
+        return this.getTokenBefore(node, { includeComments: true, skip });
+    }
+
+    /**
+     * Gets the token that follows a given node or token in the token stream.
+     * This is defined for backward compatibility. Use `includeComments` option instead.
+     * TODO: We have a plan to remove this in a future major version.
+     * @param {ASTNode|Token|Comment} node The AST node or token.
+     * @param {number} [skip=0] A number of tokens to skip.
+     * @returns {Token|null} An object representing the token.
+     * @deprecated
+     */
+    getTokenOrCommentAfter(node, skip) {
+        return this.getTokenAfter(node, { includeComments: true, skip });
+    }
+
+    //--------------------------------------------------------------------------
+    // Gets multiple tokens.
+    //--------------------------------------------------------------------------
+
+    /**
+     * Gets the first `count` tokens of the given node.
+     * @param {ASTNode} node The AST node.
+     * @param {number|Function|Object} [options=0] The option object. If this is a number then it's `options.count`. If this is a function then it's `options.filter`.
+     * @param {boolean} [options.includeComments=false] The flag to iterate comments as well.
+     * @param {Function|null} [options.filter=null] The predicate function to choose tokens.
+     * @param {number} [options.count=0] The maximum count of tokens the cursor iterates.
+     * @returns {Token[]} Tokens.
+     */
+    getFirstTokens(node, options) {
+        return createCursorWithCount(
+            cursors.forward,
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            node.range[0],
+            node.range[1],
+            options
+        ).getAllTokens();
+    }
+
+    /**
+     * Gets the last `count` tokens of the given node.
+     * @param {ASTNode} node The AST node.
+     * @param {number|Function|Object} [options=0] The option object. Same options as getFirstTokens()
+     * @returns {Token[]} Tokens.
+     */
+    getLastTokens(node, options) {
+        return createCursorWithCount(
+            cursors.backward,
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            node.range[0],
+            node.range[1],
+            options
+        ).getAllTokens().reverse();
+    }
+
+    /**
+     * Gets the `count` tokens that precedes a given node or token.
+     * @param {ASTNode|Token|Comment} node The AST node or token.
+     * @param {number|Function|Object} [options=0] The option object. Same options as getFirstTokens()
+     * @returns {Token[]} Tokens.
+     */
+    getTokensBefore(node, options) {
+        return createCursorWithCount(
+            cursors.backward,
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            -1,
+            node.range[0],
+            options
+        ).getAllTokens().reverse();
+    }
+
+    /**
+     * Gets the `count` tokens that follows a given node or token.
+     * @param {ASTNode|Token|Comment} node The AST node or token.
+     * @param {number|Function|Object} [options=0] The option object. Same options as getFirstTokens()
+     * @returns {Token[]} Tokens.
+     */
+    getTokensAfter(node, options) {
+        return createCursorWithCount(
+            cursors.forward,
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            node.range[1],
+            -1,
+            options
+        ).getAllTokens();
+    }
+
+    /**
+     * Gets the first `count` tokens between two non-overlapping nodes.
+     * @param {ASTNode|Token|Comment} left Node before the desired token range.
+     * @param {ASTNode|Token|Comment} right Node after the desired token range.
+     * @param {number|Function|Object} [options=0] The option object. Same options as getFirstTokens()
+     * @returns {Token[]} Tokens between left and right.
+     */
+    getFirstTokensBetween(left, right, options) {
+        return createCursorWithCount(
+            cursors.forward,
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            left.range[1],
+            right.range[0],
+            options
+        ).getAllTokens();
+    }
+
+    /**
+     * Gets the last `count` tokens between two non-overlapping nodes.
+     * @param {ASTNode|Token|Comment} left Node before the desired token range.
+     * @param {ASTNode|Token|Comment} right Node after the desired token range.
+     * @param {number|Function|Object} [options=0] The option object. Same options as getFirstTokens()
+     * @returns {Token[]} Tokens between left and right.
+     */
+    getLastTokensBetween(left, right, options) {
+        return createCursorWithCount(
+            cursors.backward,
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            left.range[1],
+            right.range[0],
+            options
+        ).getAllTokens().reverse();
+    }
+
+    /**
+     * Gets all tokens that are related to the given node.
+     * @param {ASTNode} node The AST node.
+     * @param {Function|Object} options The option object. If this is a function then it's `options.filter`.
+     * @param {boolean} [options.includeComments=false] The flag to iterate comments as well.
+     * @param {Function|null} [options.filter=null] The predicate function to choose tokens.
+     * @param {number} [options.count=0] The maximum count of tokens the cursor iterates.
+     * @returns {Token[]} Array of objects representing tokens.
+     */
+    /**
+     * Gets all tokens that are related to the given node.
+     * @param {ASTNode} node The AST node.
+     * @param {int} [beforeCount=0] The number of tokens before the node to retrieve.
+     * @param {int} [afterCount=0] The number of tokens after the node to retrieve.
+     * @returns {Token[]} Array of objects representing tokens.
+     */
+    getTokens(node, beforeCount, afterCount) {
+        return createCursorWithPadding(
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            node.range[0],
+            node.range[1],
+            beforeCount,
+            afterCount
+        ).getAllTokens();
+    }
+
+    /**
+     * Gets all of the tokens between two non-overlapping nodes.
+     * @param {ASTNode|Token|Comment} left Node before the desired token range.
+     * @param {ASTNode|Token|Comment} right Node after the desired token range.
+     * @param {Function|Object} options The option object. If this is a function then it's `options.filter`.
+     * @param {boolean} [options.includeComments=false] The flag to iterate comments as well.
+     * @param {Function|null} [options.filter=null] The predicate function to choose tokens.
+     * @param {number} [options.count=0] The maximum count of tokens the cursor iterates.
+     * @returns {Token[]} Tokens between left and right.
+     */
+    /**
+     * Gets all of the tokens between two non-overlapping nodes.
+     * @param {ASTNode|Token|Comment} left Node before the desired token range.
+     * @param {ASTNode|Token|Comment} right Node after the desired token range.
+     * @param {int} [padding=0] Number of extra tokens on either side of center.
+     * @returns {Token[]} Tokens between left and right.
+     */
+    getTokensBetween(left, right, padding) {
+        return createCursorWithPadding(
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            left.range[1],
+            right.range[0],
+            padding,
+            padding
+        ).getAllTokens();
+    }
+
+    //--------------------------------------------------------------------------
+    // Others.
+    //--------------------------------------------------------------------------
+
+    /**
+     * Checks whether any comments exist or not between the given 2 nodes.
+     * @param {ASTNode} left The node to check.
+     * @param {ASTNode} right The node to check.
+     * @returns {boolean} `true` if one or more comments exist.
+     */
+    commentsExistBetween(left, right) {
+        const index = utils.search(this[COMMENTS], left.range[1]);
+
+        return (
+            index < this[COMMENTS].length &&
+            this[COMMENTS][index].range[1] <= right.range[0]
+        );
+    }
+
+    /**
+     * Gets all comment tokens directly before the given node or token.
+     * @param {ASTNode|token} nodeOrToken The AST node or token to check for adjacent comment tokens.
+     * @returns {Array} An array of comments in occurrence order.
+     */
+    getCommentsBefore(nodeOrToken) {
+        const cursor = createCursorWithCount(
+            cursors.backward,
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            -1,
+            nodeOrToken.range[0],
+            { includeComments: true }
+        );
+
+        return getAdjacentCommentTokensFromCursor(cursor).reverse();
+    }
+
+    /**
+     * Gets all comment tokens directly after the given node or token.
+     * @param {ASTNode|token} nodeOrToken The AST node or token to check for adjacent comment tokens.
+     * @returns {Array} An array of comments in occurrence order.
+     */
+    getCommentsAfter(nodeOrToken) {
+        const cursor = createCursorWithCount(
+            cursors.forward,
+            this[TOKENS],
+            this[COMMENTS],
+            this[INDEX_MAP],
+            nodeOrToken.range[1],
+            -1,
+            { includeComments: true }
+        );
+
+        return getAdjacentCommentTokensFromCursor(cursor);
+    }
+
+    /**
+     * Gets all comment tokens inside the given node.
+     * @param {ASTNode} node The AST node to get the comments for.
+     * @returns {Array} An array of comments in occurrence order.
+     */
+    getCommentsInside(node) {
+        return this.getTokens(node, {
+            includeComments: true,
+            filter: isCommentToken
+        });
+    }
+};
Index: frontend/node_modules/eslint/lib/source-code/token-store/limit-cursor.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/token-store/limit-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/token-store/limit-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,40 @@
+/**
+ * @fileoverview Define the cursor which limits the number of tokens.
+ * @author Toru Nagashima
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const DecorativeCursor = require("./decorative-cursor");
+
+//------------------------------------------------------------------------------
+// Exports
+//------------------------------------------------------------------------------
+
+/**
+ * The decorative cursor which limits the number of tokens.
+ */
+module.exports = class LimitCursor extends DecorativeCursor {
+
+    /**
+     * Initializes this cursor.
+     * @param {Cursor} cursor The cursor to be decorated.
+     * @param {number} count The count of tokens this cursor iterates.
+     */
+    constructor(cursor, count) {
+        super(cursor);
+        this.count = count;
+    }
+
+    /** @inheritdoc */
+    moveNext() {
+        if (this.count > 0) {
+            this.count -= 1;
+            return super.moveNext();
+        }
+        return false;
+    }
+};
Index: frontend/node_modules/eslint/lib/source-code/token-store/padded-token-cursor.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/token-store/padded-token-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/token-store/padded-token-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,38 @@
+/**
+ * @fileoverview Define the cursor which iterates tokens only, with inflated range.
+ * @author Toru Nagashima
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const ForwardTokenCursor = require("./forward-token-cursor");
+
+//------------------------------------------------------------------------------
+// Exports
+//------------------------------------------------------------------------------
+
+/**
+ * The cursor which iterates tokens only, with inflated range.
+ * This is for the backward compatibility of padding options.
+ */
+module.exports = class PaddedTokenCursor extends ForwardTokenCursor {
+
+    /**
+     * Initializes this cursor.
+     * @param {Token[]} tokens The array of tokens.
+     * @param {Comment[]} comments The array of comments.
+     * @param {Object} indexMap The map from locations to indices in `tokens`.
+     * @param {number} startLoc The start location of the iteration range.
+     * @param {number} endLoc The end location of the iteration range.
+     * @param {number} beforeCount The number of tokens this cursor iterates before start.
+     * @param {number} afterCount The number of tokens this cursor iterates after end.
+     */
+    constructor(tokens, comments, indexMap, startLoc, endLoc, beforeCount, afterCount) {
+        super(tokens, comments, indexMap, startLoc, endLoc);
+        this.index = Math.max(0, this.index - beforeCount);
+        this.indexEnd = Math.min(tokens.length - 1, this.indexEnd + afterCount);
+    }
+};
Index: frontend/node_modules/eslint/lib/source-code/token-store/skip-cursor.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/token-store/skip-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/token-store/skip-cursor.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,42 @@
+/**
+ * @fileoverview Define the cursor which ignores the first few tokens.
+ * @author Toru Nagashima
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const DecorativeCursor = require("./decorative-cursor");
+
+//------------------------------------------------------------------------------
+// Exports
+//------------------------------------------------------------------------------
+
+/**
+ * The decorative cursor which ignores the first few tokens.
+ */
+module.exports = class SkipCursor extends DecorativeCursor {
+
+    /**
+     * Initializes this cursor.
+     * @param {Cursor} cursor The cursor to be decorated.
+     * @param {number} count The count of tokens this cursor skips.
+     */
+    constructor(cursor, count) {
+        super(cursor);
+        this.count = count;
+    }
+
+    /** @inheritdoc */
+    moveNext() {
+        while (this.count > 0) {
+            this.count -= 1;
+            if (!super.moveNext()) {
+                return false;
+            }
+        }
+        return super.moveNext();
+    }
+};
Index: frontend/node_modules/eslint/lib/source-code/token-store/utils.js
===================================================================
--- frontend/node_modules/eslint/lib/source-code/token-store/utils.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/source-code/token-store/utils.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,107 @@
+/**
+ * @fileoverview Define utility functions for token store.
+ * @author Toru Nagashima
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Exports
+//------------------------------------------------------------------------------
+
+/**
+ * Finds the index of the first token which is after the given location.
+ * If it was not found, this returns `tokens.length`.
+ * @param {(Token|Comment)[]} tokens It searches the token in this list.
+ * @param {number} location The location to search.
+ * @returns {number} The found index or `tokens.length`.
+ */
+exports.search = function search(tokens, location) {
+    for (let minIndex = 0, maxIndex = tokens.length - 1; minIndex <= maxIndex;) {
+
+        /*
+         * Calculate the index in the middle between minIndex and maxIndex.
+         * `| 0` is used to round a fractional value down to the nearest integer: this is similar to
+         * using `Math.trunc()` or `Math.floor()`, but performance tests have shown this method to
+         * be faster.
+         */
+        const index = (minIndex + maxIndex) / 2 | 0;
+        const token = tokens[index];
+        const tokenStartLocation = token.range[0];
+
+        if (location <= tokenStartLocation) {
+            if (index === minIndex) {
+                return index;
+            }
+            maxIndex = index;
+        } else {
+            minIndex = index + 1;
+        }
+    }
+    return tokens.length;
+};
+
+/**
+ * Gets the index of the `startLoc` in `tokens`.
+ * `startLoc` can be the value of `node.range[1]`, so this checks about `startLoc - 1` as well.
+ * @param {(Token|Comment)[]} tokens The tokens to find an index.
+ * @param {Object} indexMap The map from locations to indices.
+ * @param {number} startLoc The location to get an index.
+ * @returns {number} The index.
+ */
+exports.getFirstIndex = function getFirstIndex(tokens, indexMap, startLoc) {
+    if (startLoc in indexMap) {
+        return indexMap[startLoc];
+    }
+    if ((startLoc - 1) in indexMap) {
+        const index = indexMap[startLoc - 1];
+        const token = tokens[index];
+
+        // If the mapped index is out of bounds, the returned cursor index will point after the end of the tokens array.
+        if (!token) {
+            return tokens.length;
+        }
+
+        /*
+         * For the map of "comment's location -> token's index", it points the next token of a comment.
+         * In that case, +1 is unnecessary.
+         */
+        if (token.range[0] >= startLoc) {
+            return index;
+        }
+        return index + 1;
+    }
+    return 0;
+};
+
+/**
+ * Gets the index of the `endLoc` in `tokens`.
+ * The information of end locations are recorded at `endLoc - 1` in `indexMap`, so this checks about `endLoc - 1` as well.
+ * @param {(Token|Comment)[]} tokens The tokens to find an index.
+ * @param {Object} indexMap The map from locations to indices.
+ * @param {number} endLoc The location to get an index.
+ * @returns {number} The index.
+ */
+exports.getLastIndex = function getLastIndex(tokens, indexMap, endLoc) {
+    if (endLoc in indexMap) {
+        return indexMap[endLoc] - 1;
+    }
+    if ((endLoc - 1) in indexMap) {
+        const index = indexMap[endLoc - 1];
+        const token = tokens[index];
+
+        // If the mapped index is out of bounds, the returned cursor index will point before the end of the tokens array.
+        if (!token) {
+            return tokens.length - 1;
+        }
+
+        /*
+         * For the map of "comment's location -> token's index", it points the next token of a comment.
+         * In that case, -1 is necessary.
+         */
+        if (token.range[1] > endLoc) {
+            return index - 1;
+        }
+        return index;
+    }
+    return tokens.length - 1;
+};
Index: frontend/node_modules/eslint/lib/unsupported-api.js
===================================================================
--- frontend/node_modules/eslint/lib/unsupported-api.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/lib/unsupported-api.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,30 @@
+/**
+ * @fileoverview APIs that are not officially supported by ESLint.
+ *      These APIs may change or be removed at any time. Use at your
+ *      own risk.
+ * @author Nicholas C. Zakas
+ */
+
+"use strict";
+
+//-----------------------------------------------------------------------------
+// Requirements
+//-----------------------------------------------------------------------------
+
+const { FileEnumerator } = require("./cli-engine/file-enumerator");
+const { FlatESLint, shouldUseFlatConfig } = require("./eslint/flat-eslint");
+const FlatRuleTester = require("./rule-tester/flat-rule-tester");
+const { ESLint } = require("./eslint/eslint");
+
+//-----------------------------------------------------------------------------
+// Exports
+//-----------------------------------------------------------------------------
+
+module.exports = {
+    builtinRules: require("./rules"),
+    FlatESLint,
+    shouldUseFlatConfig,
+    FlatRuleTester,
+    FileEnumerator,
+    LegacyESLint: ESLint
+};
Index: frontend/node_modules/eslint/messages/all-files-ignored.js
===================================================================
--- frontend/node_modules/eslint/messages/all-files-ignored.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/all-files-ignored.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,16 @@
+"use strict";
+
+module.exports = function(it) {
+    const { pattern } = it;
+
+    return `
+You are linting "${pattern}", but all of the files matching the glob pattern "${pattern}" are ignored.
+
+If you don't want to lint these files, remove the pattern "${pattern}" from the list of arguments passed to ESLint.
+
+If you do want to lint these files, try the following solutions:
+
+* Check your .eslintignore file, or the eslintIgnore property in package.json, to ensure that the files are not configured to be ignored.
+* Explicitly list the files from this glob that you'd like to lint on the command-line, rather than providing a glob as an argument.
+`.trimStart();
+};
Index: frontend/node_modules/eslint/messages/eslintrc-incompat.js
===================================================================
--- frontend/node_modules/eslint/messages/eslintrc-incompat.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/eslintrc-incompat.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,98 @@
+"use strict";
+
+/* eslint consistent-return: 0 -- no default case */
+
+const messages = {
+
+    env: `
+A config object is using the "env" key, which is not supported in flat config system.
+
+Flat config uses "languageOptions.globals" to define global variables for your files.
+
+Please see the following page for information on how to convert your config object into the correct format:
+https://eslint.org/docs/latest/use/configure/migration-guide#configuring-language-options
+`,
+
+    extends: `
+A config object is using the "extends" key, which is not supported in flat config system.
+
+Instead of "extends", you can include config objects that you'd like to extend from directly in the flat config array.
+
+Please see the following page for more information:
+https://eslint.org/docs/latest/use/configure/migration-guide#predefined-and-shareable-configs
+`,
+
+    globals: `
+A config object is using the "globals" key, which is not supported in flat config system.
+
+Flat config uses "languageOptions.globals" to define global variables for your files.
+
+Please see the following page for information on how to convert your config object into the correct format:
+https://eslint.org/docs/latest/use/configure/migration-guide#configuring-language-options
+`,
+
+    ignorePatterns: `
+A config object is using the "ignorePatterns" key, which is not supported in flat config system.
+
+Flat config uses "ignores" to specify files to ignore.
+
+Please see the following page for information on how to convert your config object into the correct format:
+https://eslint.org/docs/latest/use/configure/migration-guide#ignoring-files
+`,
+
+    noInlineConfig: `
+A config object is using the "noInlineConfig" key, which is not supported in flat config system.
+
+Flat config uses "linterOptions.noInlineConfig" to specify files to ignore.
+
+Please see the following page for information on how to convert your config object into the correct format:
+https://eslint.org/docs/latest/use/configure/migration-guide#linter-options
+`,
+
+    overrides: `
+A config object is using the "overrides" key, which is not supported in flat config system.
+
+Flat config is an array that acts like the eslintrc "overrides" array.
+
+Please see the following page for information on how to convert your config object into the correct format:
+https://eslint.org/docs/latest/use/configure/migration-guide#glob-based-configs
+`,
+
+    parser: `
+A config object is using the "parser" key, which is not supported in flat config system.
+
+Flat config uses "languageOptions.parser" to override the default parser.
+
+Please see the following page for information on how to convert your config object into the correct format:
+https://eslint.org/docs/latest/use/configure/migration-guide#custom-parsers
+`,
+
+    parserOptions: `
+A config object is using the "parserOptions" key, which is not supported in flat config system.
+
+Flat config uses "languageOptions.parserOptions" to specify parser options.
+
+Please see the following page for information on how to convert your config object into the correct format:
+https://eslint.org/docs/latest/use/configure/migration-guide#configuring-language-options
+`,
+
+    reportUnusedDisableDirectives: `
+A config object is using the "reportUnusedDisableDirectives" key, which is not supported in flat config system.
+
+Flat config uses "linterOptions.reportUnusedDisableDirectives" to specify files to ignore.
+
+Please see the following page for information on how to convert your config object into the correct format:
+https://eslint.org/docs/latest/use/configure/migration-guide#linter-options
+`,
+
+    root: `
+A config object is using the "root" key, which is not supported in flat config system.
+
+Flat configs always act as if they are the root config file, so this key can be safely removed.
+`
+};
+
+module.exports = function({ key }) {
+
+    return messages[key].trim();
+};
Index: frontend/node_modules/eslint/messages/eslintrc-plugins.js
===================================================================
--- frontend/node_modules/eslint/messages/eslintrc-plugins.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/eslintrc-plugins.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,24 @@
+"use strict";
+
+module.exports = function({ plugins }) {
+
+    const isArrayOfStrings = typeof plugins[0] === "string";
+
+    return `
+A config object has a "plugins" key defined as an array${isArrayOfStrings ? " of strings" : ""}.
+
+Flat config requires "plugins" to be an object in this form:
+
+    {
+        plugins: {
+            ${isArrayOfStrings && plugins[0] ? plugins[0] : "namespace"}: pluginObject
+        }
+    }
+
+Please see the following page for information on how to convert your config object into the correct format:
+https://eslint.org/docs/latest/use/configure/migration-guide#importing-plugins-and-custom-parsers
+
+If you're using a shareable config that you cannot rewrite in flat config format, then use the compatibility utility:
+https://eslint.org/docs/latest/use/configure/migration-guide#using-eslintrc-configs-in-flat-config
+`;
+};
Index: frontend/node_modules/eslint/messages/extend-config-missing.js
===================================================================
--- frontend/node_modules/eslint/messages/extend-config-missing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/extend-config-missing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,13 @@
+"use strict";
+
+module.exports = function(it) {
+    const { configName, importerName } = it;
+
+    return `
+ESLint couldn't find the config "${configName}" to extend from. Please check that the name of the config is correct.
+
+The config "${configName}" was referenced from the config file in "${importerName}".
+
+If you still have problems, please stop by https://eslint.org/chat/help to chat with the team.
+`.trimStart();
+};
Index: frontend/node_modules/eslint/messages/failed-to-read-json.js
===================================================================
--- frontend/node_modules/eslint/messages/failed-to-read-json.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/failed-to-read-json.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,11 @@
+"use strict";
+
+module.exports = function(it) {
+    const { path, message } = it;
+
+    return `
+Failed to read JSON file at ${path}:
+
+${message}
+`.trimStart();
+};
Index: frontend/node_modules/eslint/messages/file-not-found.js
===================================================================
--- frontend/node_modules/eslint/messages/file-not-found.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/file-not-found.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,10 @@
+"use strict";
+
+module.exports = function(it) {
+    const { pattern, globDisabled } = it;
+
+    return `
+No files matching the pattern "${pattern}"${globDisabled ? " (with disabling globs)" : ""} were found.
+Please check for typing mistakes in the pattern.
+`.trimStart();
+};
Index: frontend/node_modules/eslint/messages/invalid-rule-options.js
===================================================================
--- frontend/node_modules/eslint/messages/invalid-rule-options.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/invalid-rule-options.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,17 @@
+"use strict";
+
+const { stringifyValueForError } = require("./shared");
+
+module.exports = function({ ruleId, value }) {
+    return `
+Configuration for rule "${ruleId}" is invalid. Each rule must have a severity ("off", 0, "warn", 1, "error", or 2) and may be followed by additional options for the rule.
+
+You passed '${stringifyValueForError(value, 4)}', which doesn't contain a valid severity.
+
+If you're attempting to configure rule options, perhaps you meant:
+
+    "${ruleId}": ["error", ${stringifyValueForError(value, 8)}]
+
+See https://eslint.org/docs/latest/use/configure/rules#using-configuration-files for configuring rules.
+`.trimStart();
+};
Index: frontend/node_modules/eslint/messages/invalid-rule-severity.js
===================================================================
--- frontend/node_modules/eslint/messages/invalid-rule-severity.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/invalid-rule-severity.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,13 @@
+"use strict";
+
+const { stringifyValueForError } = require("./shared");
+
+module.exports = function({ ruleId, value }) {
+    return `
+Configuration for rule "${ruleId}" is invalid. Expected severity of "off", 0, "warn", 1, "error", or 2.
+
+You passed '${stringifyValueForError(value, 4)}'.
+
+See https://eslint.org/docs/latest/use/configure/rules#using-configuration-files for configuring rules.
+`.trimStart();
+};
Index: frontend/node_modules/eslint/messages/no-config-found.js
===================================================================
--- frontend/node_modules/eslint/messages/no-config-found.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/no-config-found.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,15 @@
+"use strict";
+
+module.exports = function(it) {
+    const { directoryPath } = it;
+
+    return `
+ESLint couldn't find a configuration file. To set up a configuration file for this project, please run:
+
+    npm init @eslint/config
+
+ESLint looked for configuration files in ${directoryPath} and its ancestors. If it found none, it then looked in your home directory.
+
+If you think you already have a configuration file or if you need more help, please stop by the ESLint Discord server: https://eslint.org/chat
+`.trimStart();
+};
Index: frontend/node_modules/eslint/messages/plugin-conflict.js
===================================================================
--- frontend/node_modules/eslint/messages/plugin-conflict.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/plugin-conflict.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,22 @@
+"use strict";
+
+module.exports = function(it) {
+    const { pluginId, plugins } = it;
+
+    let result = `ESLint couldn't determine the plugin "${pluginId}" uniquely.
+`;
+
+    for (const { filePath, importerName } of plugins) {
+        result += `
+- ${filePath} (loaded in "${importerName}")`;
+    }
+
+    result += `
+
+Please remove the "plugins" setting from either config or remove either plugin installation.
+
+If you still can't figure out the problem, please stop by https://eslint.org/chat/help to chat with the team.
+`;
+
+    return result;
+};
Index: frontend/node_modules/eslint/messages/plugin-invalid.js
===================================================================
--- frontend/node_modules/eslint/messages/plugin-invalid.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/plugin-invalid.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,16 @@
+"use strict";
+
+module.exports = function(it) {
+    const { configName, importerName } = it;
+
+    return `
+"${configName}" is invalid syntax for a config specifier.
+
+* If your intention is to extend from a configuration exported from the plugin, add the configuration name after a slash: e.g. "${configName}/myConfig".
+* If this is the name of a shareable config instead of a plugin, remove the "plugin:" prefix: i.e. "${configName.slice("plugin:".length)}".
+
+"${configName}" was referenced from the config file in "${importerName}".
+
+If you still can't figure out the problem, please stop by https://eslint.org/chat/help to chat with the team.
+`.trimStart();
+};
Index: frontend/node_modules/eslint/messages/plugin-missing.js
===================================================================
--- frontend/node_modules/eslint/messages/plugin-missing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/plugin-missing.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,19 @@
+"use strict";
+
+module.exports = function(it) {
+    const { pluginName, resolvePluginsRelativeTo, importerName } = it;
+
+    return `
+ESLint couldn't find the plugin "${pluginName}".
+
+(The package "${pluginName}" was not found when loaded as a Node module from the directory "${resolvePluginsRelativeTo}".)
+
+It's likely that the plugin isn't installed correctly. Try reinstalling by running the following:
+
+    npm install ${pluginName}@latest --save-dev
+
+The plugin "${pluginName}" was referenced from the config file in "${importerName}".
+
+If you still can't figure out the problem, please stop by https://eslint.org/chat/help to chat with the team.
+`.trimStart();
+};
Index: frontend/node_modules/eslint/messages/print-config-with-directory-path.js
===================================================================
--- frontend/node_modules/eslint/messages/print-config-with-directory-path.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/print-config-with-directory-path.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,8 @@
+"use strict";
+
+module.exports = function() {
+    return `
+The '--print-config' CLI option requires a path to a source code file rather than a directory.
+See also: https://eslint.org/docs/latest/use/command-line-interface#--print-config
+`.trimStart();
+};
Index: frontend/node_modules/eslint/messages/shared.js
===================================================================
--- frontend/node_modules/eslint/messages/shared.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/shared.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,18 @@
+/**
+ * @fileoverview Shared utilities for error messages.
+ * @author Josh Goldberg
+ */
+
+"use strict";
+
+/**
+ * Converts a value to a string that may be printed in errors.
+ * @param {any} value The invalid value.
+ * @param {number} indentation How many spaces to indent
+ * @returns {string} The value, stringified.
+ */
+function stringifyValueForError(value, indentation) {
+    return value ? JSON.stringify(value, null, 4).replace(/\n/gu, `\n${" ".repeat(indentation)}`) : `${value}`;
+}
+
+module.exports = { stringifyValueForError };
Index: frontend/node_modules/eslint/messages/whitespace-found.js
===================================================================
--- frontend/node_modules/eslint/messages/whitespace-found.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/messages/whitespace-found.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,11 @@
+"use strict";
+
+module.exports = function(it) {
+    const { pluginName } = it;
+
+    return `
+ESLint couldn't find the plugin "${pluginName}". because there is whitespace in the name. Please check your configuration and remove all whitespace from the plugin name.
+
+If you still can't figure out the problem, please stop by https://eslint.org/chat/help to chat with the team.
+`.trimStart();
+};
Index: frontend/node_modules/eslint/node_modules/.bin/js-yaml
===================================================================
--- frontend/node_modules/eslint/node_modules/.bin/js-yaml	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/.bin/js-yaml	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,16 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*)
+        if command -v cygpath > /dev/null 2>&1; then
+            basedir=`cygpath -w "$basedir"`
+        fi
+    ;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  exec "$basedir/node"  "$basedir/../js-yaml/bin/js-yaml.js" "$@"
+else 
+  exec node  "$basedir/../js-yaml/bin/js-yaml.js" "$@"
+fi
Index: frontend/node_modules/eslint/node_modules/.bin/js-yaml.cmd
===================================================================
--- frontend/node_modules/eslint/node_modules/.bin/js-yaml.cmd	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/.bin/js-yaml.cmd	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,17 @@
+@ECHO off
+GOTO start
+:find_dp0
+SET dp0=%~dp0
+EXIT /b
+:start
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%"  "%dp0%\..\js-yaml\bin\js-yaml.js" %*
Index: frontend/node_modules/eslint/node_modules/.bin/js-yaml.ps1
===================================================================
--- frontend/node_modules/eslint/node_modules/.bin/js-yaml.ps1	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/.bin/js-yaml.ps1	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,28 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "$basedir/node$exe"  "$basedir/../js-yaml/bin/js-yaml.js" $args
+  } else {
+    & "$basedir/node$exe"  "$basedir/../js-yaml/bin/js-yaml.js" $args
+  }
+  $ret=$LASTEXITCODE
+} else {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "node$exe"  "$basedir/../js-yaml/bin/js-yaml.js" $args
+  } else {
+    & "node$exe"  "$basedir/../js-yaml/bin/js-yaml.js" $args
+  }
+  $ret=$LASTEXITCODE
+}
+exit $ret
Index: frontend/node_modules/eslint/node_modules/argparse/CHANGELOG.md
===================================================================
--- frontend/node_modules/eslint/node_modules/argparse/CHANGELOG.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/argparse/CHANGELOG.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,216 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+
+## [2.0.1] - 2020-08-29
+### Fixed
+- Fix issue with `process.argv` when used with interpreters (`coffee`, `ts-node`, etc.), #150.
+
+
+## [2.0.0] - 2020-08-14
+### Changed
+- Full rewrite. Now port from python 3.9.0 & more precise following.
+  See [doc](./doc) for difference and migration info.
+- node.js 10+ required
+- Removed most of local docs in favour of original ones.
+
+
+## [1.0.10] - 2018-02-15
+### Fixed
+- Use .concat instead of + for arrays, #122.
+
+
+## [1.0.9] - 2016-09-29
+### Changed
+- Rerelease after 1.0.8 - deps cleanup.
+
+
+## [1.0.8] - 2016-09-29
+### Changed
+- Maintenance (deps bump, fix node 6.5+ tests, coverage report).
+
+
+## [1.0.7] - 2016-03-17
+### Changed
+- Teach `addArgument` to accept string arg names. #97, @tomxtobin.
+
+
+## [1.0.6] - 2016-02-06
+### Changed
+- Maintenance: moved to eslint & updated CS.
+
+
+## [1.0.5] - 2016-02-05
+### Changed
+- Removed lodash dependency to significantly reduce install size.
+  Thanks to @mourner.
+
+
+## [1.0.4] - 2016-01-17
+### Changed
+- Maintenance: lodash update to 4.0.0.
+
+
+## [1.0.3] - 2015-10-27
+### Fixed
+- Fix parse `=` in args: `--examplepath="C:\myfolder\env=x64"`. #84, @CatWithApple.
+
+
+## [1.0.2] - 2015-03-22
+### Changed
+- Relaxed lodash version dependency.
+
+
+## [1.0.1] - 2015-02-20
+### Changed
+- Changed dependencies to be compatible with ancient nodejs.
+
+
+## [1.0.0] - 2015-02-19
+### Changed
+- Maintenance release.
+- Replaced `underscore` with `lodash`.
+- Bumped version to 1.0.0 to better reflect semver meaning.
+- HISTORY.md -> CHANGELOG.md
+
+
+## [0.1.16] - 2013-12-01
+### Changed
+- Maintenance release. Updated dependencies and docs.
+
+
+## [0.1.15] - 2013-05-13
+### Fixed
+- Fixed #55, @trebor89
+
+
+## [0.1.14] - 2013-05-12
+### Fixed
+- Fixed #62, @maxtaco
+
+
+## [0.1.13] - 2013-04-08
+### Changed
+- Added `.npmignore` to reduce package size
+
+
+## [0.1.12] - 2013-02-10
+### Fixed
+- Fixed conflictHandler (#46), @hpaulj
+
+
+## [0.1.11] - 2013-02-07
+### Added
+- Added 70+ tests (ported from python), @hpaulj
+- Added conflictHandler, @applepicke
+- Added fromfilePrefixChar, @hpaulj
+
+### Fixed
+- Multiple bugfixes, @hpaulj
+
+
+## [0.1.10] - 2012-12-30
+### Added
+- Added [mutual exclusion](http://docs.python.org/dev/library/argparse.html#mutual-exclusion)
+  support, thanks to @hpaulj
+
+### Fixed
+- Fixed options check for `storeConst` & `appendConst` actions, thanks to @hpaulj
+
+
+## [0.1.9] - 2012-12-27
+### Fixed
+- Fixed option dest interferens with other options (issue #23), thanks to @hpaulj
+- Fixed default value behavior with `*` positionals, thanks to @hpaulj
+- Improve `getDefault()` behavior, thanks to @hpaulj
+- Improve negative argument parsing, thanks to @hpaulj
+
+
+## [0.1.8] - 2012-12-01
+### Fixed
+- Fixed parser parents (issue #19), thanks to @hpaulj
+- Fixed negative argument parse (issue #20), thanks to @hpaulj
+
+
+## [0.1.7] - 2012-10-14
+### Fixed
+- Fixed 'choices' argument parse (issue #16)
+- Fixed stderr output (issue #15)
+
+
+## [0.1.6] - 2012-09-09
+### Fixed
+- Fixed check for conflict of options (thanks to @tomxtobin)
+
+
+## [0.1.5] - 2012-09-03
+### Fixed
+- Fix parser #setDefaults method (thanks to @tomxtobin)
+
+
+## [0.1.4] - 2012-07-30
+### Fixed
+- Fixed pseudo-argument support (thanks to @CGamesPlay)
+- Fixed addHelp default (should be true), if not set (thanks to @benblank)
+
+
+## [0.1.3] - 2012-06-27
+### Fixed
+- Fixed formatter api name: Formatter -> HelpFormatter
+
+
+## [0.1.2] - 2012-05-29
+### Fixed
+- Removed excess whitespace in help
+- Fixed error reporting, when parcer with subcommands
+  called with empty arguments
+
+### Added
+- Added basic tests
+
+
+## [0.1.1] - 2012-05-23
+### Fixed
+- Fixed line wrapping in help formatter
+- Added better error reporting on invalid arguments
+
+
+## [0.1.0] - 2012-05-16
+### Added
+- First release.
+
+
+[2.0.1]: https://github.com/nodeca/argparse/compare/2.0.0...2.0.1
+[2.0.0]: https://github.com/nodeca/argparse/compare/1.0.10...2.0.0
+[1.0.10]: https://github.com/nodeca/argparse/compare/1.0.9...1.0.10
+[1.0.9]: https://github.com/nodeca/argparse/compare/1.0.8...1.0.9
+[1.0.8]: https://github.com/nodeca/argparse/compare/1.0.7...1.0.8
+[1.0.7]: https://github.com/nodeca/argparse/compare/1.0.6...1.0.7
+[1.0.6]: https://github.com/nodeca/argparse/compare/1.0.5...1.0.6
+[1.0.5]: https://github.com/nodeca/argparse/compare/1.0.4...1.0.5
+[1.0.4]: https://github.com/nodeca/argparse/compare/1.0.3...1.0.4
+[1.0.3]: https://github.com/nodeca/argparse/compare/1.0.2...1.0.3
+[1.0.2]: https://github.com/nodeca/argparse/compare/1.0.1...1.0.2
+[1.0.1]: https://github.com/nodeca/argparse/compare/1.0.0...1.0.1
+[1.0.0]: https://github.com/nodeca/argparse/compare/0.1.16...1.0.0
+[0.1.16]: https://github.com/nodeca/argparse/compare/0.1.15...0.1.16
+[0.1.15]: https://github.com/nodeca/argparse/compare/0.1.14...0.1.15
+[0.1.14]: https://github.com/nodeca/argparse/compare/0.1.13...0.1.14
+[0.1.13]: https://github.com/nodeca/argparse/compare/0.1.12...0.1.13
+[0.1.12]: https://github.com/nodeca/argparse/compare/0.1.11...0.1.12
+[0.1.11]: https://github.com/nodeca/argparse/compare/0.1.10...0.1.11
+[0.1.10]: https://github.com/nodeca/argparse/compare/0.1.9...0.1.10
+[0.1.9]: https://github.com/nodeca/argparse/compare/0.1.8...0.1.9
+[0.1.8]: https://github.com/nodeca/argparse/compare/0.1.7...0.1.8
+[0.1.7]: https://github.com/nodeca/argparse/compare/0.1.6...0.1.7
+[0.1.6]: https://github.com/nodeca/argparse/compare/0.1.5...0.1.6
+[0.1.5]: https://github.com/nodeca/argparse/compare/0.1.4...0.1.5
+[0.1.4]: https://github.com/nodeca/argparse/compare/0.1.3...0.1.4
+[0.1.3]: https://github.com/nodeca/argparse/compare/0.1.2...0.1.3
+[0.1.2]: https://github.com/nodeca/argparse/compare/0.1.1...0.1.2
+[0.1.1]: https://github.com/nodeca/argparse/compare/0.1.0...0.1.1
+[0.1.0]: https://github.com/nodeca/argparse/releases/tag/0.1.0
Index: frontend/node_modules/eslint/node_modules/argparse/LICENSE
===================================================================
--- frontend/node_modules/eslint/node_modules/argparse/LICENSE	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/argparse/LICENSE	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,254 @@
+A. HISTORY OF THE SOFTWARE
+==========================
+
+Python was created in the early 1990s by Guido van Rossum at Stichting
+Mathematisch Centrum (CWI, see http://www.cwi.nl) in the Netherlands
+as a successor of a language called ABC.  Guido remains Python's
+principal author, although it includes many contributions from others.
+
+In 1995, Guido continued his work on Python at the Corporation for
+National Research Initiatives (CNRI, see http://www.cnri.reston.va.us)
+in Reston, Virginia where he released several versions of the
+software.
+
+In May 2000, Guido and the Python core development team moved to
+BeOpen.com to form the BeOpen PythonLabs team.  In October of the same
+year, the PythonLabs team moved to Digital Creations, which became
+Zope Corporation.  In 2001, the Python Software Foundation (PSF, see
+https://www.python.org/psf/) was formed, a non-profit organization
+created specifically to own Python-related Intellectual Property.
+Zope Corporation was a sponsoring member of the PSF.
+
+All Python releases are Open Source (see http://www.opensource.org for
+the Open Source Definition).  Historically, most, but not all, Python
+releases have also been GPL-compatible; the table below summarizes
+the various releases.
+
+    Release         Derived     Year        Owner       GPL-
+                    from                                compatible? (1)
+
+    0.9.0 thru 1.2              1991-1995   CWI         yes
+    1.3 thru 1.5.2  1.2         1995-1999   CNRI        yes
+    1.6             1.5.2       2000        CNRI        no
+    2.0             1.6         2000        BeOpen.com  no
+    1.6.1           1.6         2001        CNRI        yes (2)
+    2.1             2.0+1.6.1   2001        PSF         no
+    2.0.1           2.0+1.6.1   2001        PSF         yes
+    2.1.1           2.1+2.0.1   2001        PSF         yes
+    2.1.2           2.1.1       2002        PSF         yes
+    2.1.3           2.1.2       2002        PSF         yes
+    2.2 and above   2.1.1       2001-now    PSF         yes
+
+Footnotes:
+
+(1) GPL-compatible doesn't mean that we're distributing Python under
+    the GPL.  All Python licenses, unlike the GPL, let you distribute
+    a modified version without making your changes open source.  The
+    GPL-compatible licenses make it possible to combine Python with
+    other software that is released under the GPL; the others don't.
+
+(2) According to Richard Stallman, 1.6.1 is not GPL-compatible,
+    because its license has a choice of law clause.  According to
+    CNRI, however, Stallman's lawyer has told CNRI's lawyer that 1.6.1
+    is "not incompatible" with the GPL.
+
+Thanks to the many outside volunteers who have worked under Guido's
+direction to make these releases possible.
+
+
+B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON
+===============================================================
+
+PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
+--------------------------------------------
+
+1. This LICENSE AGREEMENT is between the Python Software Foundation
+("PSF"), and the Individual or Organization ("Licensee") accessing and
+otherwise using this software ("Python") in source or binary form and
+its associated documentation.
+
+2. Subject to the terms and conditions of this License Agreement, PSF hereby
+grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
+analyze, test, perform and/or display publicly, prepare derivative works,
+distribute, and otherwise use Python alone or in any derivative version,
+provided, however, that PSF's License Agreement and PSF's notice of copyright,
+i.e., "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Python Software Foundation;
+All Rights Reserved" are retained in Python alone or in any derivative version
+prepared by Licensee.
+
+3. In the event Licensee prepares a derivative work that is based on
+or incorporates Python or any part thereof, and wants to make
+the derivative work available to others as provided herein, then
+Licensee hereby agrees to include in any such work a brief summary of
+the changes made to Python.
+
+4. PSF is making Python available to Licensee on an "AS IS"
+basis.  PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
+IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND
+DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
+FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT
+INFRINGE ANY THIRD PARTY RIGHTS.
+
+5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
+FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
+A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON,
+OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
+
+6. This License Agreement will automatically terminate upon a material
+breach of its terms and conditions.
+
+7. Nothing in this License Agreement shall be deemed to create any
+relationship of agency, partnership, or joint venture between PSF and
+Licensee.  This License Agreement does not grant permission to use PSF
+trademarks or trade name in a trademark sense to endorse or promote
+products or services of Licensee, or any third party.
+
+8. By copying, installing or otherwise using Python, Licensee
+agrees to be bound by the terms and conditions of this License
+Agreement.
+
+
+BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0
+-------------------------------------------
+
+BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1
+
+1. This LICENSE AGREEMENT is between BeOpen.com ("BeOpen"), having an
+office at 160 Saratoga Avenue, Santa Clara, CA 95051, and the
+Individual or Organization ("Licensee") accessing and otherwise using
+this software in source or binary form and its associated
+documentation ("the Software").
+
+2. Subject to the terms and conditions of this BeOpen Python License
+Agreement, BeOpen hereby grants Licensee a non-exclusive,
+royalty-free, world-wide license to reproduce, analyze, test, perform
+and/or display publicly, prepare derivative works, distribute, and
+otherwise use the Software alone or in any derivative version,
+provided, however, that the BeOpen Python License is retained in the
+Software, alone or in any derivative version prepared by Licensee.
+
+3. BeOpen is making the Software available to Licensee on an "AS IS"
+basis.  BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
+IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND
+DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
+FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE WILL NOT
+INFRINGE ANY THIRD PARTY RIGHTS.
+
+4. BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE
+SOFTWARE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS
+AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY
+DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
+
+5. This License Agreement will automatically terminate upon a material
+breach of its terms and conditions.
+
+6. This License Agreement shall be governed by and interpreted in all
+respects by the law of the State of California, excluding conflict of
+law provisions.  Nothing in this License Agreement shall be deemed to
+create any relationship of agency, partnership, or joint venture
+between BeOpen and Licensee.  This License Agreement does not grant
+permission to use BeOpen trademarks or trade names in a trademark
+sense to endorse or promote products or services of Licensee, or any
+third party.  As an exception, the "BeOpen Python" logos available at
+http://www.pythonlabs.com/logos.html may be used according to the
+permissions granted on that web page.
+
+7. By copying, installing or otherwise using the software, Licensee
+agrees to be bound by the terms and conditions of this License
+Agreement.
+
+
+CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1
+---------------------------------------
+
+1. This LICENSE AGREEMENT is between the Corporation for National
+Research Initiatives, having an office at 1895 Preston White Drive,
+Reston, VA 20191 ("CNRI"), and the Individual or Organization
+("Licensee") accessing and otherwise using Python 1.6.1 software in
+source or binary form and its associated documentation.
+
+2. Subject to the terms and conditions of this License Agreement, CNRI
+hereby grants Licensee a nonexclusive, royalty-free, world-wide
+license to reproduce, analyze, test, perform and/or display publicly,
+prepare derivative works, distribute, and otherwise use Python 1.6.1
+alone or in any derivative version, provided, however, that CNRI's
+License Agreement and CNRI's notice of copyright, i.e., "Copyright (c)
+1995-2001 Corporation for National Research Initiatives; All Rights
+Reserved" are retained in Python 1.6.1 alone or in any derivative
+version prepared by Licensee.  Alternately, in lieu of CNRI's License
+Agreement, Licensee may substitute the following text (omitting the
+quotes): "Python 1.6.1 is made available subject to the terms and
+conditions in CNRI's License Agreement.  This Agreement together with
+Python 1.6.1 may be located on the Internet using the following
+unique, persistent identifier (known as a handle): 1895.22/1013.  This
+Agreement may also be obtained from a proxy server on the Internet
+using the following URL: http://hdl.handle.net/1895.22/1013".
+
+3. In the event Licensee prepares a derivative work that is based on
+or incorporates Python 1.6.1 or any part thereof, and wants to make
+the derivative work available to others as provided herein, then
+Licensee hereby agrees to include in any such work a brief summary of
+the changes made to Python 1.6.1.
+
+4. CNRI is making Python 1.6.1 available to Licensee on an "AS IS"
+basis.  CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
+IMPLIED.  BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND
+DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
+FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT
+INFRINGE ANY THIRD PARTY RIGHTS.
+
+5. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
+1.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
+A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1,
+OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
+
+6. This License Agreement will automatically terminate upon a material
+breach of its terms and conditions.
+
+7. This License Agreement shall be governed by the federal
+intellectual property law of the United States, including without
+limitation the federal copyright law, and, to the extent such
+U.S. federal law does not apply, by the law of the Commonwealth of
+Virginia, excluding Virginia's conflict of law provisions.
+Notwithstanding the foregoing, with regard to derivative works based
+on Python 1.6.1 that incorporate non-separable material that was
+previously distributed under the GNU General Public License (GPL), the
+law of the Commonwealth of Virginia shall govern this License
+Agreement only as to issues arising under or with respect to
+Paragraphs 4, 5, and 7 of this License Agreement.  Nothing in this
+License Agreement shall be deemed to create any relationship of
+agency, partnership, or joint venture between CNRI and Licensee.  This
+License Agreement does not grant permission to use CNRI trademarks or
+trade name in a trademark sense to endorse or promote products or
+services of Licensee, or any third party.
+
+8. By clicking on the "ACCEPT" button where indicated, or by copying,
+installing or otherwise using Python 1.6.1, Licensee agrees to be
+bound by the terms and conditions of this License Agreement.
+
+        ACCEPT
+
+
+CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2
+--------------------------------------------------
+
+Copyright (c) 1991 - 1995, Stichting Mathematisch Centrum Amsterdam,
+The Netherlands.  All rights reserved.
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Stichting Mathematisch
+Centrum or CWI not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
+THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
+FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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+OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
Index: frontend/node_modules/eslint/node_modules/argparse/README.md
===================================================================
--- frontend/node_modules/eslint/node_modules/argparse/README.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/argparse/README.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,84 @@
+argparse
+========
+
+[![Build Status](https://secure.travis-ci.org/nodeca/argparse.svg?branch=master)](http://travis-ci.org/nodeca/argparse)
+[![NPM version](https://img.shields.io/npm/v/argparse.svg)](https://www.npmjs.org/package/argparse)
+
+CLI arguments parser for node.js, with [sub-commands](https://docs.python.org/3.9/library/argparse.html#sub-commands) support. Port of python's [argparse](http://docs.python.org/dev/library/argparse.html) (version [3.9.0](https://github.com/python/cpython/blob/v3.9.0rc1/Lib/argparse.py)).
+
+**Difference with original.**
+
+- JS has no keyword arguments support.
+  -  Pass options instead: `new ArgumentParser({ description: 'example', add_help: true })`.
+- JS has no python's types `int`, `float`, ...
+  - Use string-typed names: `.add_argument('-b', { type: 'int', help: 'help' })`.
+- `%r` format specifier uses `require('util').inspect()`.
+
+More details in [doc](./doc).
+
+
+Example
+-------
+
+`test.js` file:
+
+```javascript
+#!/usr/bin/env node
+'use strict';
+
+const { ArgumentParser } = require('argparse');
+const { version } = require('./package.json');
+
+const parser = new ArgumentParser({
+  description: 'Argparse example'
+});
+
+parser.add_argument('-v', '--version', { action: 'version', version });
+parser.add_argument('-f', '--foo', { help: 'foo bar' });
+parser.add_argument('-b', '--bar', { help: 'bar foo' });
+parser.add_argument('--baz', { help: 'baz bar' });
+
+console.dir(parser.parse_args());
+```
+
+Display help:
+
+```
+$ ./test.js -h
+usage: test.js [-h] [-v] [-f FOO] [-b BAR] [--baz BAZ]
+
+Argparse example
+
+optional arguments:
+  -h, --help         show this help message and exit
+  -v, --version      show program's version number and exit
+  -f FOO, --foo FOO  foo bar
+  -b BAR, --bar BAR  bar foo
+  --baz BAZ          baz bar
+```
+
+Parse arguments:
+
+```
+$ ./test.js -f=3 --bar=4 --baz 5
+{ foo: '3', bar: '4', baz: '5' }
+```
+
+
+API docs
+--------
+
+Since this is a port with minimal divergence, there's no separate documentation.
+Use original one instead, with notes about difference.
+
+1. [Original doc](https://docs.python.org/3.9/library/argparse.html).
+2. [Original tutorial](https://docs.python.org/3.9/howto/argparse.html).
+3. [Difference with python](./doc).
+
+
+argparse for enterprise
+-----------------------
+
+Available as part of the Tidelift Subscription
+
+The maintainers of argparse and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/npm-argparse?utm_source=npm-argparse&utm_medium=referral&utm_campaign=enterprise&utm_term=repo)
Index: frontend/node_modules/eslint/node_modules/argparse/argparse.js
===================================================================
--- frontend/node_modules/eslint/node_modules/argparse/argparse.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/argparse/argparse.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,3707 @@
+// Port of python's argparse module, version 3.9.0:
+// https://github.com/python/cpython/blob/v3.9.0rc1/Lib/argparse.py
+
+'use strict'
+
+// Copyright (C) 2010-2020 Python Software Foundation.
+// Copyright (C) 2020 argparse.js authors
+
+/*
+ * Command-line parsing library
+ *
+ * This module is an optparse-inspired command-line parsing library that:
+ *
+ *     - handles both optional and positional arguments
+ *     - produces highly informative usage messages
+ *     - supports parsers that dispatch to sub-parsers
+ *
+ * The following is a simple usage example that sums integers from the
+ * command-line and writes the result to a file::
+ *
+ *     parser = argparse.ArgumentParser(
+ *         description='sum the integers at the command line')
+ *     parser.add_argument(
+ *         'integers', metavar='int', nargs='+', type=int,
+ *         help='an integer to be summed')
+ *     parser.add_argument(
+ *         '--log', default=sys.stdout, type=argparse.FileType('w'),
+ *         help='the file where the sum should be written')
+ *     args = parser.parse_args()
+ *     args.log.write('%s' % sum(args.integers))
+ *     args.log.close()
+ *
+ * The module contains the following public classes:
+ *
+ *     - ArgumentParser -- The main entry point for command-line parsing. As the
+ *         example above shows, the add_argument() method is used to populate
+ *         the parser with actions for optional and positional arguments. Then
+ *         the parse_args() method is invoked to convert the args at the
+ *         command-line into an object with attributes.
+ *
+ *     - ArgumentError -- The exception raised by ArgumentParser objects when
+ *         there are errors with the parser's actions. Errors raised while
+ *         parsing the command-line are caught by ArgumentParser and emitted
+ *         as command-line messages.
+ *
+ *     - FileType -- A factory for defining types of files to be created. As the
+ *         example above shows, instances of FileType are typically passed as
+ *         the type= argument of add_argument() calls.
+ *
+ *     - Action -- The base class for parser actions. Typically actions are
+ *         selected by passing strings like 'store_true' or 'append_const' to
+ *         the action= argument of add_argument(). However, for greater
+ *         customization of ArgumentParser actions, subclasses of Action may
+ *         be defined and passed as the action= argument.
+ *
+ *     - HelpFormatter, RawDescriptionHelpFormatter, RawTextHelpFormatter,
+ *         ArgumentDefaultsHelpFormatter -- Formatter classes which
+ *         may be passed as the formatter_class= argument to the
+ *         ArgumentParser constructor. HelpFormatter is the default,
+ *         RawDescriptionHelpFormatter and RawTextHelpFormatter tell the parser
+ *         not to change the formatting for help text, and
+ *         ArgumentDefaultsHelpFormatter adds information about argument defaults
+ *         to the help.
+ *
+ * All other classes in this module are considered implementation details.
+ * (Also note that HelpFormatter and RawDescriptionHelpFormatter are only
+ * considered public as object names -- the API of the formatter objects is
+ * still considered an implementation detail.)
+ */
+
+const SUPPRESS = '==SUPPRESS=='
+
+const OPTIONAL = '?'
+const ZERO_OR_MORE = '*'
+const ONE_OR_MORE = '+'
+const PARSER = 'A...'
+const REMAINDER = '...'
+const _UNRECOGNIZED_ARGS_ATTR = '_unrecognized_args'
+
+
+// ==================================
+// Utility functions used for porting
+// ==================================
+const assert = require('assert')
+const util = require('util')
+const fs = require('fs')
+const sub = require('./lib/sub')
+const path = require('path')
+const repr = util.inspect
+
+function get_argv() {
+    // omit first argument (which is assumed to be interpreter - `node`, `coffee`, `ts-node`, etc.)
+    return process.argv.slice(1)
+}
+
+function get_terminal_size() {
+    return {
+        columns: +process.env.COLUMNS || process.stdout.columns || 80
+    }
+}
+
+function hasattr(object, name) {
+    return Object.prototype.hasOwnProperty.call(object, name)
+}
+
+function getattr(object, name, value) {
+    return hasattr(object, name) ? object[name] : value
+}
+
+function setattr(object, name, value) {
+    object[name] = value
+}
+
+function setdefault(object, name, value) {
+    if (!hasattr(object, name)) object[name] = value
+    return object[name]
+}
+
+function delattr(object, name) {
+    delete object[name]
+}
+
+function range(from, to, step=1) {
+    // range(10) is equivalent to range(0, 10)
+    if (arguments.length === 1) [ to, from ] = [ from, 0 ]
+    if (typeof from !== 'number' || typeof to !== 'number' || typeof step !== 'number') {
+        throw new TypeError('argument cannot be interpreted as an integer')
+    }
+    if (step === 0) throw new TypeError('range() arg 3 must not be zero')
+
+    let result = []
+    if (step > 0) {
+        for (let i = from; i < to; i += step) result.push(i)
+    } else {
+        for (let i = from; i > to; i += step) result.push(i)
+    }
+    return result
+}
+
+function splitlines(str, keepends = false) {
+    let result
+    if (!keepends) {
+        result = str.split(/\r\n|[\n\r\v\f\x1c\x1d\x1e\x85\u2028\u2029]/)
+    } else {
+        result = []
+        let parts = str.split(/(\r\n|[\n\r\v\f\x1c\x1d\x1e\x85\u2028\u2029])/)
+        for (let i = 0; i < parts.length; i += 2) {
+            result.push(parts[i] + (i + 1 < parts.length ? parts[i + 1] : ''))
+        }
+    }
+    if (!result[result.length - 1]) result.pop()
+    return result
+}
+
+function _string_lstrip(string, prefix_chars) {
+    let idx = 0
+    while (idx < string.length && prefix_chars.includes(string[idx])) idx++
+    return idx ? string.slice(idx) : string
+}
+
+function _string_split(string, sep, maxsplit) {
+    let result = string.split(sep)
+    if (result.length > maxsplit) {
+        result = result.slice(0, maxsplit).concat([ result.slice(maxsplit).join(sep) ])
+    }
+    return result
+}
+
+function _array_equal(array1, array2) {
+    if (array1.length !== array2.length) return false
+    for (let i = 0; i < array1.length; i++) {
+        if (array1[i] !== array2[i]) return false
+    }
+    return true
+}
+
+function _array_remove(array, item) {
+    let idx = array.indexOf(item)
+    if (idx === -1) throw new TypeError(sub('%r not in list', item))
+    array.splice(idx, 1)
+}
+
+// normalize choices to array;
+// this isn't required in python because `in` and `map` operators work with anything,
+// but in js dealing with multiple types here is too clunky
+function _choices_to_array(choices) {
+    if (choices === undefined) {
+        return []
+    } else if (Array.isArray(choices)) {
+        return choices
+    } else if (choices !== null && typeof choices[Symbol.iterator] === 'function') {
+        return Array.from(choices)
+    } else if (typeof choices === 'object' && choices !== null) {
+        return Object.keys(choices)
+    } else {
+        throw new Error(sub('invalid choices value: %r', choices))
+    }
+}
+
+// decorator that allows a class to be called without new
+function _callable(cls) {
+    let result = { // object is needed for inferred class name
+        [cls.name]: function (...args) {
+            let this_class = new.target === result || !new.target
+            return Reflect.construct(cls, args, this_class ? cls : new.target)
+        }
+    }
+    result[cls.name].prototype = cls.prototype
+    // fix default tag for toString, e.g. [object Action] instead of [object Object]
+    cls.prototype[Symbol.toStringTag] = cls.name
+    return result[cls.name]
+}
+
+function _alias(object, from, to) {
+    try {
+        let name = object.constructor.name
+        Object.defineProperty(object, from, {
+            value: util.deprecate(object[to], sub('%s.%s() is renamed to %s.%s()',
+                name, from, name, to)),
+            enumerable: false
+        })
+    } catch {}
+}
+
+// decorator that allows snake_case class methods to be called with camelCase and vice versa
+function _camelcase_alias(_class) {
+    for (let name of Object.getOwnPropertyNames(_class.prototype)) {
+        let camelcase = name.replace(/\w_[a-z]/g, s => s[0] + s[2].toUpperCase())
+        if (camelcase !== name) _alias(_class.prototype, camelcase, name)
+    }
+    return _class
+}
+
+function _to_legacy_name(key) {
+    key = key.replace(/\w_[a-z]/g, s => s[0] + s[2].toUpperCase())
+    if (key === 'default') key = 'defaultValue'
+    if (key === 'const') key = 'constant'
+    return key
+}
+
+function _to_new_name(key) {
+    if (key === 'defaultValue') key = 'default'
+    if (key === 'constant') key = 'const'
+    key = key.replace(/[A-Z]/g, c => '_' + c.toLowerCase())
+    return key
+}
+
+// parse options
+let no_default = Symbol('no_default_value')
+function _parse_opts(args, descriptor) {
+    function get_name() {
+        let stack = new Error().stack.split('\n')
+            .map(x => x.match(/^    at (.*) \(.*\)$/))
+            .filter(Boolean)
+            .map(m => m[1])
+            .map(fn => fn.match(/[^ .]*$/)[0])
+
+        if (stack.length && stack[0] === get_name.name) stack.shift()
+        if (stack.length && stack[0] === _parse_opts.name) stack.shift()
+        return stack.length ? stack[0] : ''
+    }
+
+    args = Array.from(args)
+    let kwargs = {}
+    let result = []
+    let last_opt = args.length && args[args.length - 1]
+
+    if (typeof last_opt === 'object' && last_opt !== null && !Array.isArray(last_opt) &&
+        (!last_opt.constructor || last_opt.constructor.name === 'Object')) {
+        kwargs = Object.assign({}, args.pop())
+    }
+
+    // LEGACY (v1 compatibility): camelcase
+    let renames = []
+    for (let key of Object.keys(descriptor)) {
+        let old_name = _to_legacy_name(key)
+        if (old_name !== key && (old_name in kwargs)) {
+            if (key in kwargs) {
+                // default and defaultValue specified at the same time, happens often in old tests
+                //throw new TypeError(sub('%s() got multiple values for argument %r', get_name(), key))
+            } else {
+                kwargs[key] = kwargs[old_name]
+            }
+            renames.push([ old_name, key ])
+            delete kwargs[old_name]
+        }
+    }
+    if (renames.length) {
+        let name = get_name()
+        deprecate('camelcase_' + name, sub('%s(): following options are renamed: %s',
+            name, renames.map(([ a, b ]) => sub('%r -> %r', a, b))))
+    }
+    // end
+
+    let missing_positionals = []
+    let positional_count = args.length
+
+    for (let [ key, def ] of Object.entries(descriptor)) {
+        if (key[0] === '*') {
+            if (key.length > 0 && key[1] === '*') {
+                // LEGACY (v1 compatibility): camelcase
+                let renames = []
+                for (let key of Object.keys(kwargs)) {
+                    let new_name = _to_new_name(key)
+                    if (new_name !== key && (key in kwargs)) {
+                        if (new_name in kwargs) {
+                            // default and defaultValue specified at the same time, happens often in old tests
+                            //throw new TypeError(sub('%s() got multiple values for argument %r', get_name(), new_name))
+                        } else {
+                            kwargs[new_name] = kwargs[key]
+                        }
+                        renames.push([ key, new_name ])
+                        delete kwargs[key]
+                    }
+                }
+                if (renames.length) {
+                    let name = get_name()
+                    deprecate('camelcase_' + name, sub('%s(): following options are renamed: %s',
+                        name, renames.map(([ a, b ]) => sub('%r -> %r', a, b))))
+                }
+                // end
+                result.push(kwargs)
+                kwargs = {}
+            } else {
+                result.push(args)
+                args = []
+            }
+        } else if (key in kwargs && args.length > 0) {
+            throw new TypeError(sub('%s() got multiple values for argument %r', get_name(), key))
+        } else if (key in kwargs) {
+            result.push(kwargs[key])
+            delete kwargs[key]
+        } else if (args.length > 0) {
+            result.push(args.shift())
+        } else if (def !== no_default) {
+            result.push(def)
+        } else {
+            missing_positionals.push(key)
+        }
+    }
+
+    if (Object.keys(kwargs).length) {
+        throw new TypeError(sub('%s() got an unexpected keyword argument %r',
+            get_name(), Object.keys(kwargs)[0]))
+    }
+
+    if (args.length) {
+        let from = Object.entries(descriptor).filter(([ k, v ]) => k[0] !== '*' && v !== no_default).length
+        let to = Object.entries(descriptor).filter(([ k ]) => k[0] !== '*').length
+        throw new TypeError(sub('%s() takes %s positional argument%s but %s %s given',
+            get_name(),
+            from === to ? sub('from %s to %s', from, to) : to,
+            from === to && to === 1 ? '' : 's',
+            positional_count,
+            positional_count === 1 ? 'was' : 'were'))
+    }
+
+    if (missing_positionals.length) {
+        let strs = missing_positionals.map(repr)
+        if (strs.length > 1) strs[strs.length - 1] = 'and ' + strs[strs.length - 1]
+        let str_joined = strs.join(strs.length === 2 ? '' : ', ')
+        throw new TypeError(sub('%s() missing %i required positional argument%s: %s',
+            get_name(), strs.length, strs.length === 1 ? '' : 's', str_joined))
+    }
+
+    return result
+}
+
+let _deprecations = {}
+function deprecate(id, string) {
+    _deprecations[id] = _deprecations[id] || util.deprecate(() => {}, string)
+    _deprecations[id]()
+}
+
+
+// =============================
+// Utility functions and classes
+// =============================
+function _AttributeHolder(cls = Object) {
+    /*
+     *  Abstract base class that provides __repr__.
+     *
+     *  The __repr__ method returns a string in the format::
+     *      ClassName(attr=name, attr=name, ...)
+     *  The attributes are determined either by a class-level attribute,
+     *  '_kwarg_names', or by inspecting the instance __dict__.
+     */
+
+    return class _AttributeHolder extends cls {
+        [util.inspect.custom]() {
+            let type_name = this.constructor.name
+            let arg_strings = []
+            let star_args = {}
+            for (let arg of this._get_args()) {
+                arg_strings.push(repr(arg))
+            }
+            for (let [ name, value ] of this._get_kwargs()) {
+                if (/^[a-z_][a-z0-9_$]*$/i.test(name)) {
+                    arg_strings.push(sub('%s=%r', name, value))
+                } else {
+                    star_args[name] = value
+                }
+            }
+            if (Object.keys(star_args).length) {
+                arg_strings.push(sub('**%s', repr(star_args)))
+            }
+            return sub('%s(%s)', type_name, arg_strings.join(', '))
+        }
+
+        toString() {
+            return this[util.inspect.custom]()
+        }
+
+        _get_kwargs() {
+            return Object.entries(this)
+        }
+
+        _get_args() {
+            return []
+        }
+    }
+}
+
+
+function _copy_items(items) {
+    if (items === undefined) {
+        return []
+    }
+    return items.slice(0)
+}
+
+
+// ===============
+// Formatting Help
+// ===============
+const HelpFormatter = _camelcase_alias(_callable(class HelpFormatter {
+    /*
+     *  Formatter for generating usage messages and argument help strings.
+     *
+     *  Only the name of this class is considered a public API. All the methods
+     *  provided by the class are considered an implementation detail.
+     */
+
+    constructor() {
+        let [
+            prog,
+            indent_increment,
+            max_help_position,
+            width
+        ] = _parse_opts(arguments, {
+            prog: no_default,
+            indent_increment: 2,
+            max_help_position: 24,
+            width: undefined
+        })
+
+        // default setting for width
+        if (width === undefined) {
+            width = get_terminal_size().columns
+            width -= 2
+        }
+
+        this._prog = prog
+        this._indent_increment = indent_increment
+        this._max_help_position = Math.min(max_help_position,
+                                      Math.max(width - 20, indent_increment * 2))
+        this._width = width
+
+        this._current_indent = 0
+        this._level = 0
+        this._action_max_length = 0
+
+        this._root_section = this._Section(this, undefined)
+        this._current_section = this._root_section
+
+        this._whitespace_matcher = /[ \t\n\r\f\v]+/g // equivalent to python /\s+/ with ASCII flag
+        this._long_break_matcher = /\n\n\n+/g
+    }
+
+    // ===============================
+    // Section and indentation methods
+    // ===============================
+    _indent() {
+        this._current_indent += this._indent_increment
+        this._level += 1
+    }
+
+    _dedent() {
+        this._current_indent -= this._indent_increment
+        assert(this._current_indent >= 0, 'Indent decreased below 0.')
+        this._level -= 1
+    }
+
+    _add_item(func, args) {
+        this._current_section.items.push([ func, args ])
+    }
+
+    // ========================
+    // Message building methods
+    // ========================
+    start_section(heading) {
+        this._indent()
+        let section = this._Section(this, this._current_section, heading)
+        this._add_item(section.format_help.bind(section), [])
+        this._current_section = section
+    }
+
+    end_section() {
+        this._current_section = this._current_section.parent
+        this._dedent()
+    }
+
+    add_text(text) {
+        if (text !== SUPPRESS && text !== undefined) {
+            this._add_item(this._format_text.bind(this), [text])
+        }
+    }
+
+    add_usage(usage, actions, groups, prefix = undefined) {
+        if (usage !== SUPPRESS) {
+            let args = [ usage, actions, groups, prefix ]
+            this._add_item(this._format_usage.bind(this), args)
+        }
+    }
+
+    add_argument(action) {
+        if (action.help !== SUPPRESS) {
+
+            // find all invocations
+            let invocations = [this._format_action_invocation(action)]
+            for (let subaction of this._iter_indented_subactions(action)) {
+                invocations.push(this._format_action_invocation(subaction))
+            }
+
+            // update the maximum item length
+            let invocation_length = Math.max(...invocations.map(invocation => invocation.length))
+            let action_length = invocation_length + this._current_indent
+            this._action_max_length = Math.max(this._action_max_length,
+                                               action_length)
+
+            // add the item to the list
+            this._add_item(this._format_action.bind(this), [action])
+        }
+    }
+
+    add_arguments(actions) {
+        for (let action of actions) {
+            this.add_argument(action)
+        }
+    }
+
+    // =======================
+    // Help-formatting methods
+    // =======================
+    format_help() {
+        let help = this._root_section.format_help()
+        if (help) {
+            help = help.replace(this._long_break_matcher, '\n\n')
+            help = help.replace(/^\n+|\n+$/g, '') + '\n'
+        }
+        return help
+    }
+
+    _join_parts(part_strings) {
+        return part_strings.filter(part => part && part !== SUPPRESS).join('')
+    }
+
+    _format_usage(usage, actions, groups, prefix) {
+        if (prefix === undefined) {
+            prefix = 'usage: '
+        }
+
+        // if usage is specified, use that
+        if (usage !== undefined) {
+            usage = sub(usage, { prog: this._prog })
+
+        // if no optionals or positionals are available, usage is just prog
+        } else if (usage === undefined && !actions.length) {
+            usage = sub('%(prog)s', { prog: this._prog })
+
+        // if optionals and positionals are available, calculate usage
+        } else if (usage === undefined) {
+            let prog = sub('%(prog)s', { prog: this._prog })
+
+            // split optionals from positionals
+            let optionals = []
+            let positionals = []
+            for (let action of actions) {
+                if (action.option_strings.length) {
+                    optionals.push(action)
+                } else {
+                    positionals.push(action)
+                }
+            }
+
+            // build full usage string
+            let action_usage = this._format_actions_usage([].concat(optionals).concat(positionals), groups)
+            usage = [ prog, action_usage ].map(String).join(' ')
+
+            // wrap the usage parts if it's too long
+            let text_width = this._width - this._current_indent
+            if (prefix.length + usage.length > text_width) {
+
+                // break usage into wrappable parts
+                let part_regexp = /\(.*?\)+(?=\s|$)|\[.*?\]+(?=\s|$)|\S+/g
+                let opt_usage = this._format_actions_usage(optionals, groups)
+                let pos_usage = this._format_actions_usage(positionals, groups)
+                let opt_parts = opt_usage.match(part_regexp) || []
+                let pos_parts = pos_usage.match(part_regexp) || []
+                assert(opt_parts.join(' ') === opt_usage)
+                assert(pos_parts.join(' ') === pos_usage)
+
+                // helper for wrapping lines
+                let get_lines = (parts, indent, prefix = undefined) => {
+                    let lines = []
+                    let line = []
+                    let line_len
+                    if (prefix !== undefined) {
+                        line_len = prefix.length - 1
+                    } else {
+                        line_len = indent.length - 1
+                    }
+                    for (let part of parts) {
+                        if (line_len + 1 + part.length > text_width && line) {
+                            lines.push(indent + line.join(' '))
+                            line = []
+                            line_len = indent.length - 1
+                        }
+                        line.push(part)
+                        line_len += part.length + 1
+                    }
+                    if (line.length) {
+                        lines.push(indent + line.join(' '))
+                    }
+                    if (prefix !== undefined) {
+                        lines[0] = lines[0].slice(indent.length)
+                    }
+                    return lines
+                }
+
+                let lines
+
+                // if prog is short, follow it with optionals or positionals
+                if (prefix.length + prog.length <= 0.75 * text_width) {
+                    let indent = ' '.repeat(prefix.length + prog.length + 1)
+                    if (opt_parts.length) {
+                        lines = get_lines([prog].concat(opt_parts), indent, prefix)
+                        lines = lines.concat(get_lines(pos_parts, indent))
+                    } else if (pos_parts.length) {
+                        lines = get_lines([prog].concat(pos_parts), indent, prefix)
+                    } else {
+                        lines = [prog]
+                    }
+
+                // if prog is long, put it on its own line
+                } else {
+                    let indent = ' '.repeat(prefix.length)
+                    let parts = [].concat(opt_parts).concat(pos_parts)
+                    lines = get_lines(parts, indent)
+                    if (lines.length > 1) {
+                        lines = []
+                        lines = lines.concat(get_lines(opt_parts, indent))
+                        lines = lines.concat(get_lines(pos_parts, indent))
+                    }
+                    lines = [prog].concat(lines)
+                }
+
+                // join lines into usage
+                usage = lines.join('\n')
+            }
+        }
+
+        // prefix with 'usage:'
+        return sub('%s%s\n\n', prefix, usage)
+    }
+
+    _format_actions_usage(actions, groups) {
+        // find group indices and identify actions in groups
+        let group_actions = new Set()
+        let inserts = {}
+        for (let group of groups) {
+            let start = actions.indexOf(group._group_actions[0])
+            if (start === -1) {
+                continue
+            } else {
+                let end = start + group._group_actions.length
+                if (_array_equal(actions.slice(start, end), group._group_actions)) {
+                    for (let action of group._group_actions) {
+                        group_actions.add(action)
+                    }
+                    if (!group.required) {
+                        if (start in inserts) {
+                            inserts[start] += ' ['
+                        } else {
+                            inserts[start] = '['
+                        }
+                        if (end in inserts) {
+                            inserts[end] += ']'
+                        } else {
+                            inserts[end] = ']'
+                        }
+                    } else {
+                        if (start in inserts) {
+                            inserts[start] += ' ('
+                        } else {
+                            inserts[start] = '('
+                        }
+                        if (end in inserts) {
+                            inserts[end] += ')'
+                        } else {
+                            inserts[end] = ')'
+                        }
+                    }
+                    for (let i of range(start + 1, end)) {
+                        inserts[i] = '|'
+                    }
+                }
+            }
+        }
+
+        // collect all actions format strings
+        let parts = []
+        for (let [ i, action ] of Object.entries(actions)) {
+
+            // suppressed arguments are marked with None
+            // remove | separators for suppressed arguments
+            if (action.help === SUPPRESS) {
+                parts.push(undefined)
+                if (inserts[+i] === '|') {
+                    delete inserts[+i]
+                } else if (inserts[+i + 1] === '|') {
+                    delete inserts[+i + 1]
+                }
+
+            // produce all arg strings
+            } else if (!action.option_strings.length) {
+                let default_value = this._get_default_metavar_for_positional(action)
+                let part = this._format_args(action, default_value)
+
+                // if it's in a group, strip the outer []
+                if (group_actions.has(action)) {
+                    if (part[0] === '[' && part[part.length - 1] === ']') {
+                        part = part.slice(1, -1)
+                    }
+                }
+
+                // add the action string to the list
+                parts.push(part)
+
+            // produce the first way to invoke the option in brackets
+            } else {
+                let option_string = action.option_strings[0]
+                let part
+
+                // if the Optional doesn't take a value, format is:
+                //    -s or --long
+                if (action.nargs === 0) {
+                    part = action.format_usage()
+
+                // if the Optional takes a value, format is:
+                //    -s ARGS or --long ARGS
+                } else {
+                    let default_value = this._get_default_metavar_for_optional(action)
+                    let args_string = this._format_args(action, default_value)
+                    part = sub('%s %s', option_string, args_string)
+                }
+
+                // make it look optional if it's not required or in a group
+                if (!action.required && !group_actions.has(action)) {
+                    part = sub('[%s]', part)
+                }
+
+                // add the action string to the list
+                parts.push(part)
+            }
+        }
+
+        // insert things at the necessary indices
+        for (let i of Object.keys(inserts).map(Number).sort((a, b) => b - a)) {
+            parts.splice(+i, 0, inserts[+i])
+        }
+
+        // join all the action items with spaces
+        let text = parts.filter(Boolean).join(' ')
+
+        // clean up separators for mutually exclusive groups
+        text = text.replace(/([\[(]) /g, '$1')
+        text = text.replace(/ ([\])])/g, '$1')
+        text = text.replace(/[\[(] *[\])]/g, '')
+        text = text.replace(/\(([^|]*)\)/g, '$1', text)
+        text = text.trim()
+
+        // return the text
+        return text
+    }
+
+    _format_text(text) {
+        if (text.includes('%(prog)')) {
+            text = sub(text, { prog: this._prog })
+        }
+        let text_width = Math.max(this._width - this._current_indent, 11)
+        let indent = ' '.repeat(this._current_indent)
+        return this._fill_text(text, text_width, indent) + '\n\n'
+    }
+
+    _format_action(action) {
+        // determine the required width and the entry label
+        let help_position = Math.min(this._action_max_length + 2,
+                                     this._max_help_position)
+        let help_width = Math.max(this._width - help_position, 11)
+        let action_width = help_position - this._current_indent - 2
+        let action_header = this._format_action_invocation(action)
+        let indent_first
+
+        // no help; start on same line and add a final newline
+        if (!action.help) {
+            let tup = [ this._current_indent, '', action_header ]
+            action_header = sub('%*s%s\n', ...tup)
+
+        // short action name; start on the same line and pad two spaces
+        } else if (action_header.length <= action_width) {
+            let tup = [ this._current_indent, '', action_width, action_header ]
+            action_header = sub('%*s%-*s  ', ...tup)
+            indent_first = 0
+
+        // long action name; start on the next line
+        } else {
+            let tup = [ this._current_indent, '', action_header ]
+            action_header = sub('%*s%s\n', ...tup)
+            indent_first = help_position
+        }
+
+        // collect the pieces of the action help
+        let parts = [action_header]
+
+        // if there was help for the action, add lines of help text
+        if (action.help) {
+            let help_text = this._expand_help(action)
+            let help_lines = this._split_lines(help_text, help_width)
+            parts.push(sub('%*s%s\n', indent_first, '', help_lines[0]))
+            for (let line of help_lines.slice(1)) {
+                parts.push(sub('%*s%s\n', help_position, '', line))
+            }
+
+        // or add a newline if the description doesn't end with one
+        } else if (!action_header.endsWith('\n')) {
+            parts.push('\n')
+        }
+
+        // if there are any sub-actions, add their help as well
+        for (let subaction of this._iter_indented_subactions(action)) {
+            parts.push(this._format_action(subaction))
+        }
+
+        // return a single string
+        return this._join_parts(parts)
+    }
+
+    _format_action_invocation(action) {
+        if (!action.option_strings.length) {
+            let default_value = this._get_default_metavar_for_positional(action)
+            let metavar = this._metavar_formatter(action, default_value)(1)[0]
+            return metavar
+
+        } else {
+            let parts = []
+
+            // if the Optional doesn't take a value, format is:
+            //    -s, --long
+            if (action.nargs === 0) {
+                parts = parts.concat(action.option_strings)
+
+            // if the Optional takes a value, format is:
+            //    -s ARGS, --long ARGS
+            } else {
+                let default_value = this._get_default_metavar_for_optional(action)
+                let args_string = this._format_args(action, default_value)
+                for (let option_string of action.option_strings) {
+                    parts.push(sub('%s %s', option_string, args_string))
+                }
+            }
+
+            return parts.join(', ')
+        }
+    }
+
+    _metavar_formatter(action, default_metavar) {
+        let result
+        if (action.metavar !== undefined) {
+            result = action.metavar
+        } else if (action.choices !== undefined) {
+            let choice_strs = _choices_to_array(action.choices).map(String)
+            result = sub('{%s}', choice_strs.join(','))
+        } else {
+            result = default_metavar
+        }
+
+        function format(tuple_size) {
+            if (Array.isArray(result)) {
+                return result
+            } else {
+                return Array(tuple_size).fill(result)
+            }
+        }
+        return format
+    }
+
+    _format_args(action, default_metavar) {
+        let get_metavar = this._metavar_formatter(action, default_metavar)
+        let result
+        if (action.nargs === undefined) {
+            result = sub('%s', ...get_metavar(1))
+        } else if (action.nargs === OPTIONAL) {
+            result = sub('[%s]', ...get_metavar(1))
+        } else if (action.nargs === ZERO_OR_MORE) {
+            let metavar = get_metavar(1)
+            if (metavar.length === 2) {
+                result = sub('[%s [%s ...]]', ...metavar)
+            } else {
+                result = sub('[%s ...]', ...metavar)
+            }
+        } else if (action.nargs === ONE_OR_MORE) {
+            result = sub('%s [%s ...]', ...get_metavar(2))
+        } else if (action.nargs === REMAINDER) {
+            result = '...'
+        } else if (action.nargs === PARSER) {
+            result = sub('%s ...', ...get_metavar(1))
+        } else if (action.nargs === SUPPRESS) {
+            result = ''
+        } else {
+            let formats
+            try {
+                formats = range(action.nargs).map(() => '%s')
+            } catch (err) {
+                throw new TypeError('invalid nargs value')
+            }
+            result = sub(formats.join(' '), ...get_metavar(action.nargs))
+        }
+        return result
+    }
+
+    _expand_help(action) {
+        let params = Object.assign({ prog: this._prog }, action)
+        for (let name of Object.keys(params)) {
+            if (params[name] === SUPPRESS) {
+                delete params[name]
+            }
+        }
+        for (let name of Object.keys(params)) {
+            if (params[name] && params[name].name) {
+                params[name] = params[name].name
+            }
+        }
+        if (params.choices !== undefined) {
+            let choices_str = _choices_to_array(params.choices).map(String).join(', ')
+            params.choices = choices_str
+        }
+        // LEGACY (v1 compatibility): camelcase
+        for (let key of Object.keys(params)) {
+            let old_name = _to_legacy_name(key)
+            if (old_name !== key) {
+                params[old_name] = params[key]
+            }
+        }
+        // end
+        return sub(this._get_help_string(action), params)
+    }
+
+    * _iter_indented_subactions(action) {
+        if (typeof action._get_subactions === 'function') {
+            this._indent()
+            yield* action._get_subactions()
+            this._dedent()
+        }
+    }
+
+    _split_lines(text, width) {
+        text = text.replace(this._whitespace_matcher, ' ').trim()
+        // The textwrap module is used only for formatting help.
+        // Delay its import for speeding up the common usage of argparse.
+        let textwrap = require('./lib/textwrap')
+        return textwrap.wrap(text, { width })
+    }
+
+    _fill_text(text, width, indent) {
+        text = text.replace(this._whitespace_matcher, ' ').trim()
+        let textwrap = require('./lib/textwrap')
+        return textwrap.fill(text, { width,
+                                     initial_indent: indent,
+                                     subsequent_indent: indent })
+    }
+
+    _get_help_string(action) {
+        return action.help
+    }
+
+    _get_default_metavar_for_optional(action) {
+        return action.dest.toUpperCase()
+    }
+
+    _get_default_metavar_for_positional(action) {
+        return action.dest
+    }
+}))
+
+HelpFormatter.prototype._Section = _callable(class _Section {
+
+    constructor(formatter, parent, heading = undefined) {
+        this.formatter = formatter
+        this.parent = parent
+        this.heading = heading
+        this.items = []
+    }
+
+    format_help() {
+        // format the indented section
+        if (this.parent !== undefined) {
+            this.formatter._indent()
+        }
+        let item_help = this.formatter._join_parts(this.items.map(([ func, args ]) => func.apply(null, args)))
+        if (this.parent !== undefined) {
+            this.formatter._dedent()
+        }
+
+        // return nothing if the section was empty
+        if (!item_help) {
+            return ''
+        }
+
+        // add the heading if the section was non-empty
+        let heading
+        if (this.heading !== SUPPRESS && this.heading !== undefined) {
+            let current_indent = this.formatter._current_indent
+            heading = sub('%*s%s:\n', current_indent, '', this.heading)
+        } else {
+            heading = ''
+        }
+
+        // join the section-initial newline, the heading and the help
+        return this.formatter._join_parts(['\n', heading, item_help, '\n'])
+    }
+})
+
+
+const RawDescriptionHelpFormatter = _camelcase_alias(_callable(class RawDescriptionHelpFormatter extends HelpFormatter {
+    /*
+     *  Help message formatter which retains any formatting in descriptions.
+     *
+     *  Only the name of this class is considered a public API. All the methods
+     *  provided by the class are considered an implementation detail.
+     */
+
+    _fill_text(text, width, indent) {
+        return splitlines(text, true).map(line => indent + line).join('')
+    }
+}))
+
+
+const RawTextHelpFormatter = _camelcase_alias(_callable(class RawTextHelpFormatter extends RawDescriptionHelpFormatter {
+    /*
+     *  Help message formatter which retains formatting of all help text.
+     *
+     *  Only the name of this class is considered a public API. All the methods
+     *  provided by the class are considered an implementation detail.
+     */
+
+    _split_lines(text/*, width*/) {
+        return splitlines(text)
+    }
+}))
+
+
+const ArgumentDefaultsHelpFormatter = _camelcase_alias(_callable(class ArgumentDefaultsHelpFormatter extends HelpFormatter {
+    /*
+     *  Help message formatter which adds default values to argument help.
+     *
+     *  Only the name of this class is considered a public API. All the methods
+     *  provided by the class are considered an implementation detail.
+     */
+
+    _get_help_string(action) {
+        let help = action.help
+        // LEGACY (v1 compatibility): additional check for defaultValue needed
+        if (!action.help.includes('%(default)') && !action.help.includes('%(defaultValue)')) {
+            if (action.default !== SUPPRESS) {
+                let defaulting_nargs = [OPTIONAL, ZERO_OR_MORE]
+                if (action.option_strings.length || defaulting_nargs.includes(action.nargs)) {
+                    help += ' (default: %(default)s)'
+                }
+            }
+        }
+        return help
+    }
+}))
+
+
+const MetavarTypeHelpFormatter = _camelcase_alias(_callable(class MetavarTypeHelpFormatter extends HelpFormatter {
+    /*
+     *  Help message formatter which uses the argument 'type' as the default
+     *  metavar value (instead of the argument 'dest')
+     *
+     *  Only the name of this class is considered a public API. All the methods
+     *  provided by the class are considered an implementation detail.
+     */
+
+    _get_default_metavar_for_optional(action) {
+        return typeof action.type === 'function' ? action.type.name : action.type
+    }
+
+    _get_default_metavar_for_positional(action) {
+        return typeof action.type === 'function' ? action.type.name : action.type
+    }
+}))
+
+
+// =====================
+// Options and Arguments
+// =====================
+function _get_action_name(argument) {
+    if (argument === undefined) {
+        return undefined
+    } else if (argument.option_strings.length) {
+        return argument.option_strings.join('/')
+    } else if (![ undefined, SUPPRESS ].includes(argument.metavar)) {
+        return argument.metavar
+    } else if (![ undefined, SUPPRESS ].includes(argument.dest)) {
+        return argument.dest
+    } else {
+        return undefined
+    }
+}
+
+
+const ArgumentError = _callable(class ArgumentError extends Error {
+    /*
+     *  An error from creating or using an argument (optional or positional).
+     *
+     *  The string value of this exception is the message, augmented with
+     *  information about the argument that caused it.
+     */
+
+    constructor(argument, message) {
+        super()
+        this.name = 'ArgumentError'
+        this._argument_name = _get_action_name(argument)
+        this._message = message
+        this.message = this.str()
+    }
+
+    str() {
+        let format
+        if (this._argument_name === undefined) {
+            format = '%(message)s'
+        } else {
+            format = 'argument %(argument_name)s: %(message)s'
+        }
+        return sub(format, { message: this._message,
+                             argument_name: this._argument_name })
+    }
+})
+
+
+const ArgumentTypeError = _callable(class ArgumentTypeError extends Error {
+    /*
+     * An error from trying to convert a command line string to a type.
+     */
+
+    constructor(message) {
+        super(message)
+        this.name = 'ArgumentTypeError'
+    }
+})
+
+
+// ==============
+// Action classes
+// ==============
+const Action = _camelcase_alias(_callable(class Action extends _AttributeHolder(Function) {
+    /*
+     *  Information about how to convert command line strings to Python objects.
+     *
+     *  Action objects are used by an ArgumentParser to represent the information
+     *  needed to parse a single argument from one or more strings from the
+     *  command line. The keyword arguments to the Action constructor are also
+     *  all attributes of Action instances.
+     *
+     *  Keyword Arguments:
+     *
+     *      - option_strings -- A list of command-line option strings which
+     *          should be associated with this action.
+     *
+     *      - dest -- The name of the attribute to hold the created object(s)
+     *
+     *      - nargs -- The number of command-line arguments that should be
+     *          consumed. By default, one argument will be consumed and a single
+     *          value will be produced.  Other values include:
+     *              - N (an integer) consumes N arguments (and produces a list)
+     *              - '?' consumes zero or one arguments
+     *              - '*' consumes zero or more arguments (and produces a list)
+     *              - '+' consumes one or more arguments (and produces a list)
+     *          Note that the difference between the default and nargs=1 is that
+     *          with the default, a single value will be produced, while with
+     *          nargs=1, a list containing a single value will be produced.
+     *
+     *      - const -- The value to be produced if the option is specified and the
+     *          option uses an action that takes no values.
+     *
+     *      - default -- The value to be produced if the option is not specified.
+     *
+     *      - type -- A callable that accepts a single string argument, and
+     *          returns the converted value.  The standard Python types str, int,
+     *          float, and complex are useful examples of such callables.  If None,
+     *          str is used.
+     *
+     *      - choices -- A container of values that should be allowed. If not None,
+     *          after a command-line argument has been converted to the appropriate
+     *          type, an exception will be raised if it is not a member of this
+     *          collection.
+     *
+     *      - required -- True if the action must always be specified at the
+     *          command line. This is only meaningful for optional command-line
+     *          arguments.
+     *
+     *      - help -- The help string describing the argument.
+     *
+     *      - metavar -- The name to be used for the option's argument with the
+     *          help string. If None, the 'dest' value will be used as the name.
+     */
+
+    constructor() {
+        let [
+            option_strings,
+            dest,
+            nargs,
+            const_value,
+            default_value,
+            type,
+            choices,
+            required,
+            help,
+            metavar
+        ] = _parse_opts(arguments, {
+            option_strings: no_default,
+            dest: no_default,
+            nargs: undefined,
+            const: undefined,
+            default: undefined,
+            type: undefined,
+            choices: undefined,
+            required: false,
+            help: undefined,
+            metavar: undefined
+        })
+
+        // when this class is called as a function, redirect it to .call() method of itself
+        super('return arguments.callee.call.apply(arguments.callee, arguments)')
+
+        this.option_strings = option_strings
+        this.dest = dest
+        this.nargs = nargs
+        this.const = const_value
+        this.default = default_value
+        this.type = type
+        this.choices = choices
+        this.required = required
+        this.help = help
+        this.metavar = metavar
+    }
+
+    _get_kwargs() {
+        let names = [
+            'option_strings',
+            'dest',
+            'nargs',
+            'const',
+            'default',
+            'type',
+            'choices',
+            'help',
+            'metavar'
+        ]
+        return names.map(name => [ name, getattr(this, name) ])
+    }
+
+    format_usage() {
+        return this.option_strings[0]
+    }
+
+    call(/*parser, namespace, values, option_string = undefined*/) {
+        throw new Error('.call() not defined')
+    }
+}))
+
+
+const BooleanOptionalAction = _camelcase_alias(_callable(class BooleanOptionalAction extends Action {
+
+    constructor() {
+        let [
+            option_strings,
+            dest,
+            default_value,
+            type,
+            choices,
+            required,
+            help,
+            metavar
+        ] = _parse_opts(arguments, {
+            option_strings: no_default,
+            dest: no_default,
+            default: undefined,
+            type: undefined,
+            choices: undefined,
+            required: false,
+            help: undefined,
+            metavar: undefined
+        })
+
+        let _option_strings = []
+        for (let option_string of option_strings) {
+            _option_strings.push(option_string)
+
+            if (option_string.startsWith('--')) {
+                option_string = '--no-' + option_string.slice(2)
+                _option_strings.push(option_string)
+            }
+        }
+
+        if (help !== undefined && default_value !== undefined) {
+            help += ` (default: ${default_value})`
+        }
+
+        super({
+            option_strings: _option_strings,
+            dest,
+            nargs: 0,
+            default: default_value,
+            type,
+            choices,
+            required,
+            help,
+            metavar
+        })
+    }
+
+    call(parser, namespace, values, option_string = undefined) {
+        if (this.option_strings.includes(option_string)) {
+            setattr(namespace, this.dest, !option_string.startsWith('--no-'))
+        }
+    }
+
+    format_usage() {
+        return this.option_strings.join(' | ')
+    }
+}))
+
+
+const _StoreAction = _callable(class _StoreAction extends Action {
+
+    constructor() {
+        let [
+            option_strings,
+            dest,
+            nargs,
+            const_value,
+            default_value,
+            type,
+            choices,
+            required,
+            help,
+            metavar
+        ] = _parse_opts(arguments, {
+            option_strings: no_default,
+            dest: no_default,
+            nargs: undefined,
+            const: undefined,
+            default: undefined,
+            type: undefined,
+            choices: undefined,
+            required: false,
+            help: undefined,
+            metavar: undefined
+        })
+
+        if (nargs === 0) {
+            throw new TypeError('nargs for store actions must be != 0; if you ' +
+                        'have nothing to store, actions such as store ' +
+                        'true or store const may be more appropriate')
+        }
+        if (const_value !== undefined && nargs !== OPTIONAL) {
+            throw new TypeError(sub('nargs must be %r to supply const', OPTIONAL))
+        }
+        super({
+            option_strings,
+            dest,
+            nargs,
+            const: const_value,
+            default: default_value,
+            type,
+            choices,
+            required,
+            help,
+            metavar
+        })
+    }
+
+    call(parser, namespace, values/*, option_string = undefined*/) {
+        setattr(namespace, this.dest, values)
+    }
+})
+
+
+const _StoreConstAction = _callable(class _StoreConstAction extends Action {
+
+    constructor() {
+        let [
+            option_strings,
+            dest,
+            const_value,
+            default_value,
+            required,
+            help
+            //, metavar
+        ] = _parse_opts(arguments, {
+            option_strings: no_default,
+            dest: no_default,
+            const: no_default,
+            default: undefined,
+            required: false,
+            help: undefined,
+            metavar: undefined
+        })
+
+        super({
+            option_strings,
+            dest,
+            nargs: 0,
+            const: const_value,
+            default: default_value,
+            required,
+            help
+        })
+    }
+
+    call(parser, namespace/*, values, option_string = undefined*/) {
+        setattr(namespace, this.dest, this.const)
+    }
+})
+
+
+const _StoreTrueAction = _callable(class _StoreTrueAction extends _StoreConstAction {
+
+    constructor() {
+        let [
+            option_strings,
+            dest,
+            default_value,
+            required,
+            help
+        ] = _parse_opts(arguments, {
+            option_strings: no_default,
+            dest: no_default,
+            default: false,
+            required: false,
+            help: undefined
+        })
+
+        super({
+            option_strings,
+            dest,
+            const: true,
+            default: default_value,
+            required,
+            help
+        })
+    }
+})
+
+
+const _StoreFalseAction = _callable(class _StoreFalseAction extends _StoreConstAction {
+
+    constructor() {
+        let [
+            option_strings,
+            dest,
+            default_value,
+            required,
+            help
+        ] = _parse_opts(arguments, {
+            option_strings: no_default,
+            dest: no_default,
+            default: true,
+            required: false,
+            help: undefined
+        })
+
+        super({
+            option_strings,
+            dest,
+            const: false,
+            default: default_value,
+            required,
+            help
+        })
+    }
+})
+
+
+const _AppendAction = _callable(class _AppendAction extends Action {
+
+    constructor() {
+        let [
+            option_strings,
+            dest,
+            nargs,
+            const_value,
+            default_value,
+            type,
+            choices,
+            required,
+            help,
+            metavar
+        ] = _parse_opts(arguments, {
+            option_strings: no_default,
+            dest: no_default,
+            nargs: undefined,
+            const: undefined,
+            default: undefined,
+            type: undefined,
+            choices: undefined,
+            required: false,
+            help: undefined,
+            metavar: undefined
+        })
+
+        if (nargs === 0) {
+            throw new TypeError('nargs for append actions must be != 0; if arg ' +
+                        'strings are not supplying the value to append, ' +
+                        'the append const action may be more appropriate')
+        }
+        if (const_value !== undefined && nargs !== OPTIONAL) {
+            throw new TypeError(sub('nargs must be %r to supply const', OPTIONAL))
+        }
+        super({
+            option_strings,
+            dest,
+            nargs,
+            const: const_value,
+            default: default_value,
+            type,
+            choices,
+            required,
+            help,
+            metavar
+        })
+    }
+
+    call(parser, namespace, values/*, option_string = undefined*/) {
+        let items = getattr(namespace, this.dest, undefined)
+        items = _copy_items(items)
+        items.push(values)
+        setattr(namespace, this.dest, items)
+    }
+})
+
+
+const _AppendConstAction = _callable(class _AppendConstAction extends Action {
+
+    constructor() {
+        let [
+            option_strings,
+            dest,
+            const_value,
+            default_value,
+            required,
+            help,
+            metavar
+        ] = _parse_opts(arguments, {
+            option_strings: no_default,
+            dest: no_default,
+            const: no_default,
+            default: undefined,
+            required: false,
+            help: undefined,
+            metavar: undefined
+        })
+
+        super({
+            option_strings,
+            dest,
+            nargs: 0,
+            const: const_value,
+            default: default_value,
+            required,
+            help,
+            metavar
+        })
+    }
+
+    call(parser, namespace/*, values, option_string = undefined*/) {
+        let items = getattr(namespace, this.dest, undefined)
+        items = _copy_items(items)
+        items.push(this.const)
+        setattr(namespace, this.dest, items)
+    }
+})
+
+
+const _CountAction = _callable(class _CountAction extends Action {
+
+    constructor() {
+        let [
+            option_strings,
+            dest,
+            default_value,
+            required,
+            help
+        ] = _parse_opts(arguments, {
+            option_strings: no_default,
+            dest: no_default,
+            default: undefined,
+            required: false,
+            help: undefined
+        })
+
+        super({
+            option_strings,
+            dest,
+            nargs: 0,
+            default: default_value,
+            required,
+            help
+        })
+    }
+
+    call(parser, namespace/*, values, option_string = undefined*/) {
+        let count = getattr(namespace, this.dest, undefined)
+        if (count === undefined) {
+            count = 0
+        }
+        setattr(namespace, this.dest, count + 1)
+    }
+})
+
+
+const _HelpAction = _callable(class _HelpAction extends Action {
+
+    constructor() {
+        let [
+            option_strings,
+            dest,
+            default_value,
+            help
+        ] = _parse_opts(arguments, {
+            option_strings: no_default,
+            dest: SUPPRESS,
+            default: SUPPRESS,
+            help: undefined
+        })
+
+        super({
+            option_strings,
+            dest,
+            default: default_value,
+            nargs: 0,
+            help
+        })
+    }
+
+    call(parser/*, namespace, values, option_string = undefined*/) {
+        parser.print_help()
+        parser.exit()
+    }
+})
+
+
+const _VersionAction = _callable(class _VersionAction extends Action {
+
+    constructor() {
+        let [
+            option_strings,
+            version,
+            dest,
+            default_value,
+            help
+        ] = _parse_opts(arguments, {
+            option_strings: no_default,
+            version: undefined,
+            dest: SUPPRESS,
+            default: SUPPRESS,
+            help: "show program's version number and exit"
+        })
+
+        super({
+            option_strings,
+            dest,
+            default: default_value,
+            nargs: 0,
+            help
+        })
+        this.version = version
+    }
+
+    call(parser/*, namespace, values, option_string = undefined*/) {
+        let version = this.version
+        if (version === undefined) {
+            version = parser.version
+        }
+        let formatter = parser._get_formatter()
+        formatter.add_text(version)
+        parser._print_message(formatter.format_help(), process.stdout)
+        parser.exit()
+    }
+})
+
+
+const _SubParsersAction = _camelcase_alias(_callable(class _SubParsersAction extends Action {
+
+    constructor() {
+        let [
+            option_strings,
+            prog,
+            parser_class,
+            dest,
+            required,
+            help,
+            metavar
+        ] = _parse_opts(arguments, {
+            option_strings: no_default,
+            prog: no_default,
+            parser_class: no_default,
+            dest: SUPPRESS,
+            required: false,
+            help: undefined,
+            metavar: undefined
+        })
+
+        let name_parser_map = {}
+
+        super({
+            option_strings,
+            dest,
+            nargs: PARSER,
+            choices: name_parser_map,
+            required,
+            help,
+            metavar
+        })
+
+        this._prog_prefix = prog
+        this._parser_class = parser_class
+        this._name_parser_map = name_parser_map
+        this._choices_actions = []
+    }
+
+    add_parser() {
+        let [
+            name,
+            kwargs
+        ] = _parse_opts(arguments, {
+            name: no_default,
+            '**kwargs': no_default
+        })
+
+        // set prog from the existing prefix
+        if (kwargs.prog === undefined) {
+            kwargs.prog = sub('%s %s', this._prog_prefix, name)
+        }
+
+        let aliases = getattr(kwargs, 'aliases', [])
+        delete kwargs.aliases
+
+        // create a pseudo-action to hold the choice help
+        if ('help' in kwargs) {
+            let help = kwargs.help
+            delete kwargs.help
+            let choice_action = this._ChoicesPseudoAction(name, aliases, help)
+            this._choices_actions.push(choice_action)
+        }
+
+        // create the parser and add it to the map
+        let parser = new this._parser_class(kwargs)
+        this._name_parser_map[name] = parser
+
+        // make parser available under aliases also
+        for (let alias of aliases) {
+            this._name_parser_map[alias] = parser
+        }
+
+        return parser
+    }
+
+    _get_subactions() {
+        return this._choices_actions
+    }
+
+    call(parser, namespace, values/*, option_string = undefined*/) {
+        let parser_name = values[0]
+        let arg_strings = values.slice(1)
+
+        // set the parser name if requested
+        if (this.dest !== SUPPRESS) {
+            setattr(namespace, this.dest, parser_name)
+        }
+
+        // select the parser
+        if (hasattr(this._name_parser_map, parser_name)) {
+            parser = this._name_parser_map[parser_name]
+        } else {
+            let args = {parser_name,
+                        choices: this._name_parser_map.join(', ')}
+            let msg = sub('unknown parser %(parser_name)r (choices: %(choices)s)', args)
+            throw new ArgumentError(this, msg)
+        }
+
+        // parse all the remaining options into the namespace
+        // store any unrecognized options on the object, so that the top
+        // level parser can decide what to do with them
+
+        // In case this subparser defines new defaults, we parse them
+        // in a new namespace object and then update the original
+        // namespace for the relevant parts.
+        let subnamespace
+        [ subnamespace, arg_strings ] = parser.parse_known_args(arg_strings, undefined)
+        for (let [ key, value ] of Object.entries(subnamespace)) {
+            setattr(namespace, key, value)
+        }
+
+        if (arg_strings.length) {
+            setdefault(namespace, _UNRECOGNIZED_ARGS_ATTR, [])
+            getattr(namespace, _UNRECOGNIZED_ARGS_ATTR).push(...arg_strings)
+        }
+    }
+}))
+
+
+_SubParsersAction.prototype._ChoicesPseudoAction = _callable(class _ChoicesPseudoAction extends Action {
+    constructor(name, aliases, help) {
+        let metavar = name, dest = name
+        if (aliases.length) {
+            metavar += sub(' (%s)', aliases.join(', '))
+        }
+        super({ option_strings: [], dest, help, metavar })
+    }
+})
+
+
+const _ExtendAction = _callable(class _ExtendAction extends _AppendAction {
+    call(parser, namespace, values/*, option_string = undefined*/) {
+        let items = getattr(namespace, this.dest, undefined)
+        items = _copy_items(items)
+        items = items.concat(values)
+        setattr(namespace, this.dest, items)
+    }
+})
+
+
+// ==============
+// Type classes
+// ==============
+const FileType = _callable(class FileType extends Function {
+    /*
+     *  Factory for creating file object types
+     *
+     *  Instances of FileType are typically passed as type= arguments to the
+     *  ArgumentParser add_argument() method.
+     *
+     *  Keyword Arguments:
+     *      - mode -- A string indicating how the file is to be opened. Accepts the
+     *          same values as the builtin open() function.
+     *      - bufsize -- The file's desired buffer size. Accepts the same values as
+     *          the builtin open() function.
+     *      - encoding -- The file's encoding. Accepts the same values as the
+     *          builtin open() function.
+     *      - errors -- A string indicating how encoding and decoding errors are to
+     *          be handled. Accepts the same value as the builtin open() function.
+     */
+
+    constructor() {
+        let [
+            flags,
+            encoding,
+            mode,
+            autoClose,
+            emitClose,
+            start,
+            end,
+            highWaterMark,
+            fs
+        ] = _parse_opts(arguments, {
+            flags: 'r',
+            encoding: undefined,
+            mode: undefined, // 0o666
+            autoClose: undefined, // true
+            emitClose: undefined, // false
+            start: undefined, // 0
+            end: undefined, // Infinity
+            highWaterMark: undefined, // 64 * 1024
+            fs: undefined
+        })
+
+        // when this class is called as a function, redirect it to .call() method of itself
+        super('return arguments.callee.call.apply(arguments.callee, arguments)')
+
+        Object.defineProperty(this, 'name', {
+            get() {
+                return sub('FileType(%r)', flags)
+            }
+        })
+        this._flags = flags
+        this._options = {}
+        if (encoding !== undefined) this._options.encoding = encoding
+        if (mode !== undefined) this._options.mode = mode
+        if (autoClose !== undefined) this._options.autoClose = autoClose
+        if (emitClose !== undefined) this._options.emitClose = emitClose
+        if (start !== undefined) this._options.start = start
+        if (end !== undefined) this._options.end = end
+        if (highWaterMark !== undefined) this._options.highWaterMark = highWaterMark
+        if (fs !== undefined) this._options.fs = fs
+    }
+
+    call(string) {
+        // the special argument "-" means sys.std{in,out}
+        if (string === '-') {
+            if (this._flags.includes('r')) {
+                return process.stdin
+            } else if (this._flags.includes('w')) {
+                return process.stdout
+            } else {
+                let msg = sub('argument "-" with mode %r', this._flags)
+                throw new TypeError(msg)
+            }
+        }
+
+        // all other arguments are used as file names
+        let fd
+        try {
+            fd = fs.openSync(string, this._flags, this._options.mode)
+        } catch (e) {
+            let args = { filename: string, error: e.message }
+            let message = "can't open '%(filename)s': %(error)s"
+            throw new ArgumentTypeError(sub(message, args))
+        }
+
+        let options = Object.assign({ fd, flags: this._flags }, this._options)
+        if (this._flags.includes('r')) {
+            return fs.createReadStream(undefined, options)
+        } else if (this._flags.includes('w')) {
+            return fs.createWriteStream(undefined, options)
+        } else {
+            let msg = sub('argument "%s" with mode %r', string, this._flags)
+            throw new TypeError(msg)
+        }
+    }
+
+    [util.inspect.custom]() {
+        let args = [ this._flags ]
+        let kwargs = Object.entries(this._options).map(([ k, v ]) => {
+            if (k === 'mode') v = { value: v, [util.inspect.custom]() { return '0o' + this.value.toString(8) } }
+            return [ k, v ]
+        })
+        let args_str = []
+                .concat(args.filter(arg => arg !== -1).map(repr))
+                .concat(kwargs.filter(([/*kw*/, arg]) => arg !== undefined)
+                    .map(([kw, arg]) => sub('%s=%r', kw, arg)))
+                .join(', ')
+        return sub('%s(%s)', this.constructor.name, args_str)
+    }
+
+    toString() {
+        return this[util.inspect.custom]()
+    }
+})
+
+// ===========================
+// Optional and Positional Parsing
+// ===========================
+const Namespace = _callable(class Namespace extends _AttributeHolder() {
+    /*
+     *  Simple object for storing attributes.
+     *
+     *  Implements equality by attribute names and values, and provides a simple
+     *  string representation.
+     */
+
+    constructor(options = {}) {
+        super()
+        Object.assign(this, options)
+    }
+})
+
+// unset string tag to mimic plain object
+Namespace.prototype[Symbol.toStringTag] = undefined
+
+
+const _ActionsContainer = _camelcase_alias(_callable(class _ActionsContainer {
+
+    constructor() {
+        let [
+            description,
+            prefix_chars,
+            argument_default,
+            conflict_handler
+        ] = _parse_opts(arguments, {
+            description: no_default,
+            prefix_chars: no_default,
+            argument_default: no_default,
+            conflict_handler: no_default
+        })
+
+        this.description = description
+        this.argument_default = argument_default
+        this.prefix_chars = prefix_chars
+        this.conflict_handler = conflict_handler
+
+        // set up registries
+        this._registries = {}
+
+        // register actions
+        this.register('action', undefined, _StoreAction)
+        this.register('action', 'store', _StoreAction)
+        this.register('action', 'store_const', _StoreConstAction)
+        this.register('action', 'store_true', _StoreTrueAction)
+        this.register('action', 'store_false', _StoreFalseAction)
+        this.register('action', 'append', _AppendAction)
+        this.register('action', 'append_const', _AppendConstAction)
+        this.register('action', 'count', _CountAction)
+        this.register('action', 'help', _HelpAction)
+        this.register('action', 'version', _VersionAction)
+        this.register('action', 'parsers', _SubParsersAction)
+        this.register('action', 'extend', _ExtendAction)
+        // LEGACY (v1 compatibility): camelcase variants
+        ;[ 'storeConst', 'storeTrue', 'storeFalse', 'appendConst' ].forEach(old_name => {
+            let new_name = _to_new_name(old_name)
+            this.register('action', old_name, util.deprecate(this._registry_get('action', new_name),
+                sub('{action: "%s"} is renamed to {action: "%s"}', old_name, new_name)))
+        })
+        // end
+
+        // raise an exception if the conflict handler is invalid
+        this._get_handler()
+
+        // action storage
+        this._actions = []
+        this._option_string_actions = {}
+
+        // groups
+        this._action_groups = []
+        this._mutually_exclusive_groups = []
+
+        // defaults storage
+        this._defaults = {}
+
+        // determines whether an "option" looks like a negative number
+        this._negative_number_matcher = /^-\d+$|^-\d*\.\d+$/
+
+        // whether or not there are any optionals that look like negative
+        // numbers -- uses a list so it can be shared and edited
+        this._has_negative_number_optionals = []
+    }
+
+    // ====================
+    // Registration methods
+    // ====================
+    register(registry_name, value, object) {
+        let registry = setdefault(this._registries, registry_name, {})
+        registry[value] = object
+    }
+
+    _registry_get(registry_name, value, default_value = undefined) {
+        return getattr(this._registries[registry_name], value, default_value)
+    }
+
+    // ==================================
+    // Namespace default accessor methods
+    // ==================================
+    set_defaults(kwargs) {
+        Object.assign(this._defaults, kwargs)
+
+        // if these defaults match any existing arguments, replace
+        // the previous default on the object with the new one
+        for (let action of this._actions) {
+            if (action.dest in kwargs) {
+                action.default = kwargs[action.dest]
+            }
+        }
+    }
+
+    get_default(dest) {
+        for (let action of this._actions) {
+            if (action.dest === dest && action.default !== undefined) {
+                return action.default
+            }
+        }
+        return this._defaults[dest]
+    }
+
+
+    // =======================
+    // Adding argument actions
+    // =======================
+    add_argument() {
+        /*
+         *  add_argument(dest, ..., name=value, ...)
+         *  add_argument(option_string, option_string, ..., name=value, ...)
+         */
+        let [
+            args,
+            kwargs
+        ] = _parse_opts(arguments, {
+            '*args': no_default,
+            '**kwargs': no_default
+        })
+        // LEGACY (v1 compatibility), old-style add_argument([ args ], { options })
+        if (args.length === 1 && Array.isArray(args[0])) {
+            args = args[0]
+            deprecate('argument-array',
+                sub('use add_argument(%(args)s, {...}) instead of add_argument([ %(args)s ], { ... })', {
+                    args: args.map(repr).join(', ')
+                }))
+        }
+        // end
+
+        // if no positional args are supplied or only one is supplied and
+        // it doesn't look like an option string, parse a positional
+        // argument
+        let chars = this.prefix_chars
+        if (!args.length || args.length === 1 && !chars.includes(args[0][0])) {
+            if (args.length && 'dest' in kwargs) {
+                throw new TypeError('dest supplied twice for positional argument')
+            }
+            kwargs = this._get_positional_kwargs(...args, kwargs)
+
+        // otherwise, we're adding an optional argument
+        } else {
+            kwargs = this._get_optional_kwargs(...args, kwargs)
+        }
+
+        // if no default was supplied, use the parser-level default
+        if (!('default' in kwargs)) {
+            let dest = kwargs.dest
+            if (dest in this._defaults) {
+                kwargs.default = this._defaults[dest]
+            } else if (this.argument_default !== undefined) {
+                kwargs.default = this.argument_default
+            }
+        }
+
+        // create the action object, and add it to the parser
+        let action_class = this._pop_action_class(kwargs)
+        if (typeof action_class !== 'function') {
+            throw new TypeError(sub('unknown action "%s"', action_class))
+        }
+        // eslint-disable-next-line new-cap
+        let action = new action_class(kwargs)
+
+        // raise an error if the action type is not callable
+        let type_func = this._registry_get('type', action.type, action.type)
+        if (typeof type_func !== 'function') {
+            throw new TypeError(sub('%r is not callable', type_func))
+        }
+
+        if (type_func === FileType) {
+            throw new TypeError(sub('%r is a FileType class object, instance of it' +
+                                    ' must be passed', type_func))
+        }
+
+        // raise an error if the metavar does not match the type
+        if ('_get_formatter' in this) {
+            try {
+                this._get_formatter()._format_args(action, undefined)
+            } catch (err) {
+                // check for 'invalid nargs value' is an artifact of TypeError and ValueError in js being the same
+                if (err instanceof TypeError && err.message !== 'invalid nargs value') {
+                    throw new TypeError('length of metavar tuple does not match nargs')
+                } else {
+                    throw err
+                }
+            }
+        }
+
+        return this._add_action(action)
+    }
+
+    add_argument_group() {
+        let group = _ArgumentGroup(this, ...arguments)
+        this._action_groups.push(group)
+        return group
+    }
+
+    add_mutually_exclusive_group() {
+        // eslint-disable-next-line no-use-before-define
+        let group = _MutuallyExclusiveGroup(this, ...arguments)
+        this._mutually_exclusive_groups.push(group)
+        return group
+    }
+
+    _add_action(action) {
+        // resolve any conflicts
+        this._check_conflict(action)
+
+        // add to actions list
+        this._actions.push(action)
+        action.container = this
+
+        // index the action by any option strings it has
+        for (let option_string of action.option_strings) {
+            this._option_string_actions[option_string] = action
+        }
+
+        // set the flag if any option strings look like negative numbers
+        for (let option_string of action.option_strings) {
+            if (this._negative_number_matcher.test(option_string)) {
+                if (!this._has_negative_number_optionals.length) {
+                    this._has_negative_number_optionals.push(true)
+                }
+            }
+        }
+
+        // return the created action
+        return action
+    }
+
+    _remove_action(action) {
+        _array_remove(this._actions, action)
+    }
+
+    _add_container_actions(container) {
+        // collect groups by titles
+        let title_group_map = {}
+        for (let group of this._action_groups) {
+            if (group.title in title_group_map) {
+                let msg = 'cannot merge actions - two groups are named %r'
+                throw new TypeError(sub(msg, group.title))
+            }
+            title_group_map[group.title] = group
+        }
+
+        // map each action to its group
+        let group_map = new Map()
+        for (let group of container._action_groups) {
+
+            // if a group with the title exists, use that, otherwise
+            // create a new group matching the container's group
+            if (!(group.title in title_group_map)) {
+                title_group_map[group.title] = this.add_argument_group({
+                    title: group.title,
+                    description: group.description,
+                    conflict_handler: group.conflict_handler
+                })
+            }
+
+            // map the actions to their new group
+            for (let action of group._group_actions) {
+                group_map.set(action, title_group_map[group.title])
+            }
+        }
+
+        // add container's mutually exclusive groups
+        // NOTE: if add_mutually_exclusive_group ever gains title= and
+        // description= then this code will need to be expanded as above
+        for (let group of container._mutually_exclusive_groups) {
+            let mutex_group = this.add_mutually_exclusive_group({
+                required: group.required
+            })
+
+            // map the actions to their new mutex group
+            for (let action of group._group_actions) {
+                group_map.set(action, mutex_group)
+            }
+        }
+
+        // add all actions to this container or their group
+        for (let action of container._actions) {
+            group_map.get(action)._add_action(action)
+        }
+    }
+
+    _get_positional_kwargs() {
+        let [
+            dest,
+            kwargs
+        ] = _parse_opts(arguments, {
+            dest: no_default,
+            '**kwargs': no_default
+        })
+
+        // make sure required is not specified
+        if ('required' in kwargs) {
+            let msg = "'required' is an invalid argument for positionals"
+            throw new TypeError(msg)
+        }
+
+        // mark positional arguments as required if at least one is
+        // always required
+        if (![OPTIONAL, ZERO_OR_MORE].includes(kwargs.nargs)) {
+            kwargs.required = true
+        }
+        if (kwargs.nargs === ZERO_OR_MORE && !('default' in kwargs)) {
+            kwargs.required = true
+        }
+
+        // return the keyword arguments with no option strings
+        return Object.assign(kwargs, { dest, option_strings: [] })
+    }
+
+    _get_optional_kwargs() {
+        let [
+            args,
+            kwargs
+        ] = _parse_opts(arguments, {
+            '*args': no_default,
+            '**kwargs': no_default
+        })
+
+        // determine short and long option strings
+        let option_strings = []
+        let long_option_strings = []
+        let option_string
+        for (option_string of args) {
+            // error on strings that don't start with an appropriate prefix
+            if (!this.prefix_chars.includes(option_string[0])) {
+                let args = {option: option_string,
+                            prefix_chars: this.prefix_chars}
+                let msg = 'invalid option string %(option)r: ' +
+                          'must start with a character %(prefix_chars)r'
+                throw new TypeError(sub(msg, args))
+            }
+
+            // strings starting with two prefix characters are long options
+            option_strings.push(option_string)
+            if (option_string.length > 1 && this.prefix_chars.includes(option_string[1])) {
+                long_option_strings.push(option_string)
+            }
+        }
+
+        // infer destination, '--foo-bar' -> 'foo_bar' and '-x' -> 'x'
+        let dest = kwargs.dest
+        delete kwargs.dest
+        if (dest === undefined) {
+            let dest_option_string
+            if (long_option_strings.length) {
+                dest_option_string = long_option_strings[0]
+            } else {
+                dest_option_string = option_strings[0]
+            }
+            dest = _string_lstrip(dest_option_string, this.prefix_chars)
+            if (!dest) {
+                let msg = 'dest= is required for options like %r'
+                throw new TypeError(sub(msg, option_string))
+            }
+            dest = dest.replace(/-/g, '_')
+        }
+
+        // return the updated keyword arguments
+        return Object.assign(kwargs, { dest, option_strings })
+    }
+
+    _pop_action_class(kwargs, default_value = undefined) {
+        let action = getattr(kwargs, 'action', default_value)
+        delete kwargs.action
+        return this._registry_get('action', action, action)
+    }
+
+    _get_handler() {
+        // determine function from conflict handler string
+        let handler_func_name = sub('_handle_conflict_%s', this.conflict_handler)
+        if (typeof this[handler_func_name] === 'function') {
+            return this[handler_func_name]
+        } else {
+            let msg = 'invalid conflict_resolution value: %r'
+            throw new TypeError(sub(msg, this.conflict_handler))
+        }
+    }
+
+    _check_conflict(action) {
+
+        // find all options that conflict with this option
+        let confl_optionals = []
+        for (let option_string of action.option_strings) {
+            if (hasattr(this._option_string_actions, option_string)) {
+                let confl_optional = this._option_string_actions[option_string]
+                confl_optionals.push([ option_string, confl_optional ])
+            }
+        }
+
+        // resolve any conflicts
+        if (confl_optionals.length) {
+            let conflict_handler = this._get_handler()
+            conflict_handler.call(this, action, confl_optionals)
+        }
+    }
+
+    _handle_conflict_error(action, conflicting_actions) {
+        let message = conflicting_actions.length === 1 ?
+            'conflicting option string: %s' :
+            'conflicting option strings: %s'
+        let conflict_string = conflicting_actions.map(([ option_string/*, action*/ ]) => option_string).join(', ')
+        throw new ArgumentError(action, sub(message, conflict_string))
+    }
+
+    _handle_conflict_resolve(action, conflicting_actions) {
+
+        // remove all conflicting options
+        for (let [ option_string, action ] of conflicting_actions) {
+
+            // remove the conflicting option
+            _array_remove(action.option_strings, option_string)
+            delete this._option_string_actions[option_string]
+
+            // if the option now has no option string, remove it from the
+            // container holding it
+            if (!action.option_strings.length) {
+                action.container._remove_action(action)
+            }
+        }
+    }
+}))
+
+
+const _ArgumentGroup = _callable(class _ArgumentGroup extends _ActionsContainer {
+
+    constructor() {
+        let [
+            container,
+            title,
+            description,
+            kwargs
+        ] = _parse_opts(arguments, {
+            container: no_default,
+            title: undefined,
+            description: undefined,
+            '**kwargs': no_default
+        })
+
+        // add any missing keyword arguments by checking the container
+        setdefault(kwargs, 'conflict_handler', container.conflict_handler)
+        setdefault(kwargs, 'prefix_chars', container.prefix_chars)
+        setdefault(kwargs, 'argument_default', container.argument_default)
+        super(Object.assign({ description }, kwargs))
+
+        // group attributes
+        this.title = title
+        this._group_actions = []
+
+        // share most attributes with the container
+        this._registries = container._registries
+        this._actions = container._actions
+        this._option_string_actions = container._option_string_actions
+        this._defaults = container._defaults
+        this._has_negative_number_optionals =
+            container._has_negative_number_optionals
+        this._mutually_exclusive_groups = container._mutually_exclusive_groups
+    }
+
+    _add_action(action) {
+        action = super._add_action(action)
+        this._group_actions.push(action)
+        return action
+    }
+
+    _remove_action(action) {
+        super._remove_action(action)
+        _array_remove(this._group_actions, action)
+    }
+})
+
+
+const _MutuallyExclusiveGroup = _callable(class _MutuallyExclusiveGroup extends _ArgumentGroup {
+
+    constructor() {
+        let [
+            container,
+            required
+        ] = _parse_opts(arguments, {
+            container: no_default,
+            required: false
+        })
+
+        super(container)
+        this.required = required
+        this._container = container
+    }
+
+    _add_action(action) {
+        if (action.required) {
+            let msg = 'mutually exclusive arguments must be optional'
+            throw new TypeError(msg)
+        }
+        action = this._container._add_action(action)
+        this._group_actions.push(action)
+        return action
+    }
+
+    _remove_action(action) {
+        this._container._remove_action(action)
+        _array_remove(this._group_actions, action)
+    }
+})
+
+
+const ArgumentParser = _camelcase_alias(_callable(class ArgumentParser extends _AttributeHolder(_ActionsContainer) {
+    /*
+     *  Object for parsing command line strings into Python objects.
+     *
+     *  Keyword Arguments:
+     *      - prog -- The name of the program (default: sys.argv[0])
+     *      - usage -- A usage message (default: auto-generated from arguments)
+     *      - description -- A description of what the program does
+     *      - epilog -- Text following the argument descriptions
+     *      - parents -- Parsers whose arguments should be copied into this one
+     *      - formatter_class -- HelpFormatter class for printing help messages
+     *      - prefix_chars -- Characters that prefix optional arguments
+     *      - fromfile_prefix_chars -- Characters that prefix files containing
+     *          additional arguments
+     *      - argument_default -- The default value for all arguments
+     *      - conflict_handler -- String indicating how to handle conflicts
+     *      - add_help -- Add a -h/-help option
+     *      - allow_abbrev -- Allow long options to be abbreviated unambiguously
+     *      - exit_on_error -- Determines whether or not ArgumentParser exits with
+     *          error info when an error occurs
+     */
+
+    constructor() {
+        let [
+            prog,
+            usage,
+            description,
+            epilog,
+            parents,
+            formatter_class,
+            prefix_chars,
+            fromfile_prefix_chars,
+            argument_default,
+            conflict_handler,
+            add_help,
+            allow_abbrev,
+            exit_on_error,
+            debug, // LEGACY (v1 compatibility), debug mode
+            version // LEGACY (v1 compatibility), version
+        ] = _parse_opts(arguments, {
+            prog: undefined,
+            usage: undefined,
+            description: undefined,
+            epilog: undefined,
+            parents: [],
+            formatter_class: HelpFormatter,
+            prefix_chars: '-',
+            fromfile_prefix_chars: undefined,
+            argument_default: undefined,
+            conflict_handler: 'error',
+            add_help: true,
+            allow_abbrev: true,
+            exit_on_error: true,
+            debug: undefined, // LEGACY (v1 compatibility), debug mode
+            version: undefined // LEGACY (v1 compatibility), version
+        })
+
+        // LEGACY (v1 compatibility)
+        if (debug !== undefined) {
+            deprecate('debug',
+                'The "debug" argument to ArgumentParser is deprecated. Please ' +
+                'override ArgumentParser.exit function instead.'
+            )
+        }
+
+        if (version !== undefined) {
+            deprecate('version',
+                'The "version" argument to ArgumentParser is deprecated. Please use ' +
+                "add_argument(..., { action: 'version', version: 'N', ... }) instead."
+            )
+        }
+        // end
+
+        super({
+            description,
+            prefix_chars,
+            argument_default,
+            conflict_handler
+        })
+
+        // default setting for prog
+        if (prog === undefined) {
+            prog = path.basename(get_argv()[0] || '')
+        }
+
+        this.prog = prog
+        this.usage = usage
+        this.epilog = epilog
+        this.formatter_class = formatter_class
+        this.fromfile_prefix_chars = fromfile_prefix_chars
+        this.add_help = add_help
+        this.allow_abbrev = allow_abbrev
+        this.exit_on_error = exit_on_error
+        // LEGACY (v1 compatibility), debug mode
+        this.debug = debug
+        // end
+
+        this._positionals = this.add_argument_group('positional arguments')
+        this._optionals = this.add_argument_group('optional arguments')
+        this._subparsers = undefined
+
+        // register types
+        function identity(string) {
+            return string
+        }
+        this.register('type', undefined, identity)
+        this.register('type', null, identity)
+        this.register('type', 'auto', identity)
+        this.register('type', 'int', function (x) {
+            let result = Number(x)
+            if (!Number.isInteger(result)) {
+                throw new TypeError(sub('could not convert string to int: %r', x))
+            }
+            return result
+        })
+        this.register('type', 'float', function (x) {
+            let result = Number(x)
+            if (isNaN(result)) {
+                throw new TypeError(sub('could not convert string to float: %r', x))
+            }
+            return result
+        })
+        this.register('type', 'str', String)
+        // LEGACY (v1 compatibility): custom types
+        this.register('type', 'string',
+            util.deprecate(String, 'use {type:"str"} or {type:String} instead of {type:"string"}'))
+        // end
+
+        // add help argument if necessary
+        // (using explicit default to override global argument_default)
+        let default_prefix = prefix_chars.includes('-') ? '-' : prefix_chars[0]
+        if (this.add_help) {
+            this.add_argument(
+                default_prefix + 'h',
+                default_prefix.repeat(2) + 'help',
+                {
+                    action: 'help',
+                    default: SUPPRESS,
+                    help: 'show this help message and exit'
+                }
+            )
+        }
+        // LEGACY (v1 compatibility), version
+        if (version) {
+            this.add_argument(
+                default_prefix + 'v',
+                default_prefix.repeat(2) + 'version',
+                {
+                    action: 'version',
+                    default: SUPPRESS,
+                    version: this.version,
+                    help: "show program's version number and exit"
+                }
+            )
+        }
+        // end
+
+        // add parent arguments and defaults
+        for (let parent of parents) {
+            this._add_container_actions(parent)
+            Object.assign(this._defaults, parent._defaults)
+        }
+    }
+
+    // =======================
+    // Pretty __repr__ methods
+    // =======================
+    _get_kwargs() {
+        let names = [
+            'prog',
+            'usage',
+            'description',
+            'formatter_class',
+            'conflict_handler',
+            'add_help'
+        ]
+        return names.map(name => [ name, getattr(this, name) ])
+    }
+
+    // ==================================
+    // Optional/Positional adding methods
+    // ==================================
+    add_subparsers() {
+        let [
+            kwargs
+        ] = _parse_opts(arguments, {
+            '**kwargs': no_default
+        })
+
+        if (this._subparsers !== undefined) {
+            this.error('cannot have multiple subparser arguments')
+        }
+
+        // add the parser class to the arguments if it's not present
+        setdefault(kwargs, 'parser_class', this.constructor)
+
+        if ('title' in kwargs || 'description' in kwargs) {
+            let title = getattr(kwargs, 'title', 'subcommands')
+            let description = getattr(kwargs, 'description', undefined)
+            delete kwargs.title
+            delete kwargs.description
+            this._subparsers = this.add_argument_group(title, description)
+        } else {
+            this._subparsers = this._positionals
+        }
+
+        // prog defaults to the usage message of this parser, skipping
+        // optional arguments and with no "usage:" prefix
+        if (kwargs.prog === undefined) {
+            let formatter = this._get_formatter()
+            let positionals = this._get_positional_actions()
+            let groups = this._mutually_exclusive_groups
+            formatter.add_usage(this.usage, positionals, groups, '')
+            kwargs.prog = formatter.format_help().trim()
+        }
+
+        // create the parsers action and add it to the positionals list
+        let parsers_class = this._pop_action_class(kwargs, 'parsers')
+        // eslint-disable-next-line new-cap
+        let action = new parsers_class(Object.assign({ option_strings: [] }, kwargs))
+        this._subparsers._add_action(action)
+
+        // return the created parsers action
+        return action
+    }
+
+    _add_action(action) {
+        if (action.option_strings.length) {
+            this._optionals._add_action(action)
+        } else {
+            this._positionals._add_action(action)
+        }
+        return action
+    }
+
+    _get_optional_actions() {
+        return this._actions.filter(action => action.option_strings.length)
+    }
+
+    _get_positional_actions() {
+        return this._actions.filter(action => !action.option_strings.length)
+    }
+
+    // =====================================
+    // Command line argument parsing methods
+    // =====================================
+    parse_args(args = undefined, namespace = undefined) {
+        let argv
+        [ args, argv ] = this.parse_known_args(args, namespace)
+        if (argv && argv.length > 0) {
+            let msg = 'unrecognized arguments: %s'
+            this.error(sub(msg, argv.join(' ')))
+        }
+        return args
+    }
+
+    parse_known_args(args = undefined, namespace = undefined) {
+        if (args === undefined) {
+            args = get_argv().slice(1)
+        }
+
+        // default Namespace built from parser defaults
+        if (namespace === undefined) {
+            namespace = new Namespace()
+        }
+
+        // add any action defaults that aren't present
+        for (let action of this._actions) {
+            if (action.dest !== SUPPRESS) {
+                if (!hasattr(namespace, action.dest)) {
+                    if (action.default !== SUPPRESS) {
+                        setattr(namespace, action.dest, action.default)
+                    }
+                }
+            }
+        }
+
+        // add any parser defaults that aren't present
+        for (let dest of Object.keys(this._defaults)) {
+            if (!hasattr(namespace, dest)) {
+                setattr(namespace, dest, this._defaults[dest])
+            }
+        }
+
+        // parse the arguments and exit if there are any errors
+        if (this.exit_on_error) {
+            try {
+                [ namespace, args ] = this._parse_known_args(args, namespace)
+            } catch (err) {
+                if (err instanceof ArgumentError) {
+                    this.error(err.message)
+                } else {
+                    throw err
+                }
+            }
+        } else {
+            [ namespace, args ] = this._parse_known_args(args, namespace)
+        }
+
+        if (hasattr(namespace, _UNRECOGNIZED_ARGS_ATTR)) {
+            args = args.concat(getattr(namespace, _UNRECOGNIZED_ARGS_ATTR))
+            delattr(namespace, _UNRECOGNIZED_ARGS_ATTR)
+        }
+
+        return [ namespace, args ]
+    }
+
+    _parse_known_args(arg_strings, namespace) {
+        // replace arg strings that are file references
+        if (this.fromfile_prefix_chars !== undefined) {
+            arg_strings = this._read_args_from_files(arg_strings)
+        }
+
+        // map all mutually exclusive arguments to the other arguments
+        // they can't occur with
+        let action_conflicts = new Map()
+        for (let mutex_group of this._mutually_exclusive_groups) {
+            let group_actions = mutex_group._group_actions
+            for (let [ i, mutex_action ] of Object.entries(mutex_group._group_actions)) {
+                let conflicts = action_conflicts.get(mutex_action) || []
+                conflicts = conflicts.concat(group_actions.slice(0, +i))
+                conflicts = conflicts.concat(group_actions.slice(+i + 1))
+                action_conflicts.set(mutex_action, conflicts)
+            }
+        }
+
+        // find all option indices, and determine the arg_string_pattern
+        // which has an 'O' if there is an option at an index,
+        // an 'A' if there is an argument, or a '-' if there is a '--'
+        let option_string_indices = {}
+        let arg_string_pattern_parts = []
+        let arg_strings_iter = Object.entries(arg_strings)[Symbol.iterator]()
+        for (let [ i, arg_string ] of arg_strings_iter) {
+
+            // all args after -- are non-options
+            if (arg_string === '--') {
+                arg_string_pattern_parts.push('-')
+                for ([ i, arg_string ] of arg_strings_iter) {
+                    arg_string_pattern_parts.push('A')
+                }
+
+            // otherwise, add the arg to the arg strings
+            // and note the index if it was an option
+            } else {
+                let option_tuple = this._parse_optional(arg_string)
+                let pattern
+                if (option_tuple === undefined) {
+                    pattern = 'A'
+                } else {
+                    option_string_indices[i] = option_tuple
+                    pattern = 'O'
+                }
+                arg_string_pattern_parts.push(pattern)
+            }
+        }
+
+        // join the pieces together to form the pattern
+        let arg_strings_pattern = arg_string_pattern_parts.join('')
+
+        // converts arg strings to the appropriate and then takes the action
+        let seen_actions = new Set()
+        let seen_non_default_actions = new Set()
+        let extras
+
+        let take_action = (action, argument_strings, option_string = undefined) => {
+            seen_actions.add(action)
+            let argument_values = this._get_values(action, argument_strings)
+
+            // error if this argument is not allowed with other previously
+            // seen arguments, assuming that actions that use the default
+            // value don't really count as "present"
+            if (argument_values !== action.default) {
+                seen_non_default_actions.add(action)
+                for (let conflict_action of action_conflicts.get(action) || []) {
+                    if (seen_non_default_actions.has(conflict_action)) {
+                        let msg = 'not allowed with argument %s'
+                        let action_name = _get_action_name(conflict_action)
+                        throw new ArgumentError(action, sub(msg, action_name))
+                    }
+                }
+            }
+
+            // take the action if we didn't receive a SUPPRESS value
+            // (e.g. from a default)
+            if (argument_values !== SUPPRESS) {
+                action(this, namespace, argument_values, option_string)
+            }
+        }
+
+        // function to convert arg_strings into an optional action
+        let consume_optional = start_index => {
+
+            // get the optional identified at this index
+            let option_tuple = option_string_indices[start_index]
+            let [ action, option_string, explicit_arg ] = option_tuple
+
+            // identify additional optionals in the same arg string
+            // (e.g. -xyz is the same as -x -y -z if no args are required)
+            let action_tuples = []
+            let stop
+            for (;;) {
+
+                // if we found no optional action, skip it
+                if (action === undefined) {
+                    extras.push(arg_strings[start_index])
+                    return start_index + 1
+                }
+
+                // if there is an explicit argument, try to match the
+                // optional's string arguments to only this
+                if (explicit_arg !== undefined) {
+                    let arg_count = this._match_argument(action, 'A')
+
+                    // if the action is a single-dash option and takes no
+                    // arguments, try to parse more single-dash options out
+                    // of the tail of the option string
+                    let chars = this.prefix_chars
+                    if (arg_count === 0 && !chars.includes(option_string[1])) {
+                        action_tuples.push([ action, [], option_string ])
+                        let char = option_string[0]
+                        option_string = char + explicit_arg[0]
+                        let new_explicit_arg = explicit_arg.slice(1) || undefined
+                        let optionals_map = this._option_string_actions
+                        if (hasattr(optionals_map, option_string)) {
+                            action = optionals_map[option_string]
+                            explicit_arg = new_explicit_arg
+                        } else {
+                            let msg = 'ignored explicit argument %r'
+                            throw new ArgumentError(action, sub(msg, explicit_arg))
+                        }
+
+                    // if the action expect exactly one argument, we've
+                    // successfully matched the option; exit the loop
+                    } else if (arg_count === 1) {
+                        stop = start_index + 1
+                        let args = [ explicit_arg ]
+                        action_tuples.push([ action, args, option_string ])
+                        break
+
+                    // error if a double-dash option did not use the
+                    // explicit argument
+                    } else {
+                        let msg = 'ignored explicit argument %r'
+                        throw new ArgumentError(action, sub(msg, explicit_arg))
+                    }
+
+                // if there is no explicit argument, try to match the
+                // optional's string arguments with the following strings
+                // if successful, exit the loop
+                } else {
+                    let start = start_index + 1
+                    let selected_patterns = arg_strings_pattern.slice(start)
+                    let arg_count = this._match_argument(action, selected_patterns)
+                    stop = start + arg_count
+                    let args = arg_strings.slice(start, stop)
+                    action_tuples.push([ action, args, option_string ])
+                    break
+                }
+            }
+
+            // add the Optional to the list and return the index at which
+            // the Optional's string args stopped
+            assert(action_tuples.length)
+            for (let [ action, args, option_string ] of action_tuples) {
+                take_action(action, args, option_string)
+            }
+            return stop
+        }
+
+        // the list of Positionals left to be parsed; this is modified
+        // by consume_positionals()
+        let positionals = this._get_positional_actions()
+
+        // function to convert arg_strings into positional actions
+        let consume_positionals = start_index => {
+            // match as many Positionals as possible
+            let selected_pattern = arg_strings_pattern.slice(start_index)
+            let arg_counts = this._match_arguments_partial(positionals, selected_pattern)
+
+            // slice off the appropriate arg strings for each Positional
+            // and add the Positional and its args to the list
+            for (let i = 0; i < positionals.length && i < arg_counts.length; i++) {
+                let action = positionals[i]
+                let arg_count = arg_counts[i]
+                let args = arg_strings.slice(start_index, start_index + arg_count)
+                start_index += arg_count
+                take_action(action, args)
+            }
+
+            // slice off the Positionals that we just parsed and return the
+            // index at which the Positionals' string args stopped
+            positionals = positionals.slice(arg_counts.length)
+            return start_index
+        }
+
+        // consume Positionals and Optionals alternately, until we have
+        // passed the last option string
+        extras = []
+        let start_index = 0
+        let max_option_string_index = Math.max(-1, ...Object.keys(option_string_indices).map(Number))
+        while (start_index <= max_option_string_index) {
+
+            // consume any Positionals preceding the next option
+            let next_option_string_index = Math.min(
+                // eslint-disable-next-line no-loop-func
+                ...Object.keys(option_string_indices).map(Number).filter(index => index >= start_index)
+            )
+            if (start_index !== next_option_string_index) {
+                let positionals_end_index = consume_positionals(start_index)
+
+                // only try to parse the next optional if we didn't consume
+                // the option string during the positionals parsing
+                if (positionals_end_index > start_index) {
+                    start_index = positionals_end_index
+                    continue
+                } else {
+                    start_index = positionals_end_index
+                }
+            }
+
+            // if we consumed all the positionals we could and we're not
+            // at the index of an option string, there were extra arguments
+            if (!(start_index in option_string_indices)) {
+                let strings = arg_strings.slice(start_index, next_option_string_index)
+                extras = extras.concat(strings)
+                start_index = next_option_string_index
+            }
+
+            // consume the next optional and any arguments for it
+            start_index = consume_optional(start_index)
+        }
+
+        // consume any positionals following the last Optional
+        let stop_index = consume_positionals(start_index)
+
+        // if we didn't consume all the argument strings, there were extras
+        extras = extras.concat(arg_strings.slice(stop_index))
+
+        // make sure all required actions were present and also convert
+        // action defaults which were not given as arguments
+        let required_actions = []
+        for (let action of this._actions) {
+            if (!seen_actions.has(action)) {
+                if (action.required) {
+                    required_actions.push(_get_action_name(action))
+                } else {
+                    // Convert action default now instead of doing it before
+                    // parsing arguments to avoid calling convert functions
+                    // twice (which may fail) if the argument was given, but
+                    // only if it was defined already in the namespace
+                    if (action.default !== undefined &&
+                        typeof action.default === 'string' &&
+                        hasattr(namespace, action.dest) &&
+                        action.default === getattr(namespace, action.dest)) {
+                        setattr(namespace, action.dest,
+                                this._get_value(action, action.default))
+                    }
+                }
+            }
+        }
+
+        if (required_actions.length) {
+            this.error(sub('the following arguments are required: %s',
+                       required_actions.join(', ')))
+        }
+
+        // make sure all required groups had one option present
+        for (let group of this._mutually_exclusive_groups) {
+            if (group.required) {
+                let no_actions_used = true
+                for (let action of group._group_actions) {
+                    if (seen_non_default_actions.has(action)) {
+                        no_actions_used = false
+                        break
+                    }
+                }
+
+                // if no actions were used, report the error
+                if (no_actions_used) {
+                    let names = group._group_actions
+                        .filter(action => action.help !== SUPPRESS)
+                        .map(action => _get_action_name(action))
+                    let msg = 'one of the arguments %s is required'
+                    this.error(sub(msg, names.join(' ')))
+                }
+            }
+        }
+
+        // return the updated namespace and the extra arguments
+        return [ namespace, extras ]
+    }
+
+    _read_args_from_files(arg_strings) {
+        // expand arguments referencing files
+        let new_arg_strings = []
+        for (let arg_string of arg_strings) {
+
+            // for regular arguments, just add them back into the list
+            if (!arg_string || !this.fromfile_prefix_chars.includes(arg_string[0])) {
+                new_arg_strings.push(arg_string)
+
+            // replace arguments referencing files with the file content
+            } else {
+                try {
+                    let args_file = fs.readFileSync(arg_string.slice(1), 'utf8')
+                    let arg_strings = []
+                    for (let arg_line of splitlines(args_file)) {
+                        for (let arg of this.convert_arg_line_to_args(arg_line)) {
+                            arg_strings.push(arg)
+                        }
+                    }
+                    arg_strings = this._read_args_from_files(arg_strings)
+                    new_arg_strings = new_arg_strings.concat(arg_strings)
+                } catch (err) {
+                    this.error(err.message)
+                }
+            }
+        }
+
+        // return the modified argument list
+        return new_arg_strings
+    }
+
+    convert_arg_line_to_args(arg_line) {
+        return [arg_line]
+    }
+
+    _match_argument(action, arg_strings_pattern) {
+        // match the pattern for this action to the arg strings
+        let nargs_pattern = this._get_nargs_pattern(action)
+        let match = arg_strings_pattern.match(new RegExp('^' + nargs_pattern))
+
+        // raise an exception if we weren't able to find a match
+        if (match === null) {
+            let nargs_errors = {
+                undefined: 'expected one argument',
+                [OPTIONAL]: 'expected at most one argument',
+                [ONE_OR_MORE]: 'expected at least one argument'
+            }
+            let msg = nargs_errors[action.nargs]
+            if (msg === undefined) {
+                msg = sub(action.nargs === 1 ? 'expected %s argument' : 'expected %s arguments', action.nargs)
+            }
+            throw new ArgumentError(action, msg)
+        }
+
+        // return the number of arguments matched
+        return match[1].length
+    }
+
+    _match_arguments_partial(actions, arg_strings_pattern) {
+        // progressively shorten the actions list by slicing off the
+        // final actions until we find a match
+        let result = []
+        for (let i of range(actions.length, 0, -1)) {
+            let actions_slice = actions.slice(0, i)
+            let pattern = actions_slice.map(action => this._get_nargs_pattern(action)).join('')
+            let match = arg_strings_pattern.match(new RegExp('^' + pattern))
+            if (match !== null) {
+                result = result.concat(match.slice(1).map(string => string.length))
+                break
+            }
+        }
+
+        // return the list of arg string counts
+        return result
+    }
+
+    _parse_optional(arg_string) {
+        // if it's an empty string, it was meant to be a positional
+        if (!arg_string) {
+            return undefined
+        }
+
+        // if it doesn't start with a prefix, it was meant to be positional
+        if (!this.prefix_chars.includes(arg_string[0])) {
+            return undefined
+        }
+
+        // if the option string is present in the parser, return the action
+        if (arg_string in this._option_string_actions) {
+            let action = this._option_string_actions[arg_string]
+            return [ action, arg_string, undefined ]
+        }
+
+        // if it's just a single character, it was meant to be positional
+        if (arg_string.length === 1) {
+            return undefined
+        }
+
+        // if the option string before the "=" is present, return the action
+        if (arg_string.includes('=')) {
+            let [ option_string, explicit_arg ] = _string_split(arg_string, '=', 1)
+            if (option_string in this._option_string_actions) {
+                let action = this._option_string_actions[option_string]
+                return [ action, option_string, explicit_arg ]
+            }
+        }
+
+        // search through all possible prefixes of the option string
+        // and all actions in the parser for possible interpretations
+        let option_tuples = this._get_option_tuples(arg_string)
+
+        // if multiple actions match, the option string was ambiguous
+        if (option_tuples.length > 1) {
+            let options = option_tuples.map(([ /*action*/, option_string/*, explicit_arg*/ ]) => option_string).join(', ')
+            let args = {option: arg_string, matches: options}
+            let msg = 'ambiguous option: %(option)s could match %(matches)s'
+            this.error(sub(msg, args))
+
+        // if exactly one action matched, this segmentation is good,
+        // so return the parsed action
+        } else if (option_tuples.length === 1) {
+            let [ option_tuple ] = option_tuples
+            return option_tuple
+        }
+
+        // if it was not found as an option, but it looks like a negative
+        // number, it was meant to be positional
+        // unless there are negative-number-like options
+        if (this._negative_number_matcher.test(arg_string)) {
+            if (!this._has_negative_number_optionals.length) {
+                return undefined
+            }
+        }
+
+        // if it contains a space, it was meant to be a positional
+        if (arg_string.includes(' ')) {
+            return undefined
+        }
+
+        // it was meant to be an optional but there is no such option
+        // in this parser (though it might be a valid option in a subparser)
+        return [ undefined, arg_string, undefined ]
+    }
+
+    _get_option_tuples(option_string) {
+        let result = []
+
+        // option strings starting with two prefix characters are only
+        // split at the '='
+        let chars = this.prefix_chars
+        if (chars.includes(option_string[0]) && chars.includes(option_string[1])) {
+            if (this.allow_abbrev) {
+                let option_prefix, explicit_arg
+                if (option_string.includes('=')) {
+                    [ option_prefix, explicit_arg ] = _string_split(option_string, '=', 1)
+                } else {
+                    option_prefix = option_string
+                    explicit_arg = undefined
+                }
+                for (let option_string of Object.keys(this._option_string_actions)) {
+                    if (option_string.startsWith(option_prefix)) {
+                        let action = this._option_string_actions[option_string]
+                        let tup = [ action, option_string, explicit_arg ]
+                        result.push(tup)
+                    }
+                }
+            }
+
+        // single character options can be concatenated with their arguments
+        // but multiple character options always have to have their argument
+        // separate
+        } else if (chars.includes(option_string[0]) && !chars.includes(option_string[1])) {
+            let option_prefix = option_string
+            let explicit_arg = undefined
+            let short_option_prefix = option_string.slice(0, 2)
+            let short_explicit_arg = option_string.slice(2)
+
+            for (let option_string of Object.keys(this._option_string_actions)) {
+                if (option_string === short_option_prefix) {
+                    let action = this._option_string_actions[option_string]
+                    let tup = [ action, option_string, short_explicit_arg ]
+                    result.push(tup)
+                } else if (option_string.startsWith(option_prefix)) {
+                    let action = this._option_string_actions[option_string]
+                    let tup = [ action, option_string, explicit_arg ]
+                    result.push(tup)
+                }
+            }
+
+        // shouldn't ever get here
+        } else {
+            this.error(sub('unexpected option string: %s', option_string))
+        }
+
+        // return the collected option tuples
+        return result
+    }
+
+    _get_nargs_pattern(action) {
+        // in all examples below, we have to allow for '--' args
+        // which are represented as '-' in the pattern
+        let nargs = action.nargs
+        let nargs_pattern
+
+        // the default (None) is assumed to be a single argument
+        if (nargs === undefined) {
+            nargs_pattern = '(-*A-*)'
+
+        // allow zero or one arguments
+        } else if (nargs === OPTIONAL) {
+            nargs_pattern = '(-*A?-*)'
+
+        // allow zero or more arguments
+        } else if (nargs === ZERO_OR_MORE) {
+            nargs_pattern = '(-*[A-]*)'
+
+        // allow one or more arguments
+        } else if (nargs === ONE_OR_MORE) {
+            nargs_pattern = '(-*A[A-]*)'
+
+        // allow any number of options or arguments
+        } else if (nargs === REMAINDER) {
+            nargs_pattern = '([-AO]*)'
+
+        // allow one argument followed by any number of options or arguments
+        } else if (nargs === PARSER) {
+            nargs_pattern = '(-*A[-AO]*)'
+
+        // suppress action, like nargs=0
+        } else if (nargs === SUPPRESS) {
+            nargs_pattern = '(-*-*)'
+
+        // all others should be integers
+        } else {
+            nargs_pattern = sub('(-*%s-*)', 'A'.repeat(nargs).split('').join('-*'))
+        }
+
+        // if this is an optional action, -- is not allowed
+        if (action.option_strings.length) {
+            nargs_pattern = nargs_pattern.replace(/-\*/g, '')
+            nargs_pattern = nargs_pattern.replace(/-/g, '')
+        }
+
+        // return the pattern
+        return nargs_pattern
+    }
+
+    // ========================
+    // Alt command line argument parsing, allowing free intermix
+    // ========================
+
+    parse_intermixed_args(args = undefined, namespace = undefined) {
+        let argv
+        [ args, argv ] = this.parse_known_intermixed_args(args, namespace)
+        if (argv.length) {
+            let msg = 'unrecognized arguments: %s'
+            this.error(sub(msg, argv.join(' ')))
+        }
+        return args
+    }
+
+    parse_known_intermixed_args(args = undefined, namespace = undefined) {
+        // returns a namespace and list of extras
+        //
+        // positional can be freely intermixed with optionals.  optionals are
+        // first parsed with all positional arguments deactivated.  The 'extras'
+        // are then parsed.  If the parser definition is incompatible with the
+        // intermixed assumptions (e.g. use of REMAINDER, subparsers) a
+        // TypeError is raised.
+        //
+        // positionals are 'deactivated' by setting nargs and default to
+        // SUPPRESS.  This blocks the addition of that positional to the
+        // namespace
+
+        let extras
+        let positionals = this._get_positional_actions()
+        let a = positionals.filter(action => [ PARSER, REMAINDER ].includes(action.nargs))
+        if (a.length) {
+            throw new TypeError(sub('parse_intermixed_args: positional arg' +
+                                    ' with nargs=%s', a[0].nargs))
+        }
+
+        for (let group of this._mutually_exclusive_groups) {
+            for (let action of group._group_actions) {
+                if (positionals.includes(action)) {
+                    throw new TypeError('parse_intermixed_args: positional in' +
+                                        ' mutuallyExclusiveGroup')
+                }
+            }
+        }
+
+        let save_usage
+        try {
+            save_usage = this.usage
+            let remaining_args
+            try {
+                if (this.usage === undefined) {
+                    // capture the full usage for use in error messages
+                    this.usage = this.format_usage().slice(7)
+                }
+                for (let action of positionals) {
+                    // deactivate positionals
+                    action.save_nargs = action.nargs
+                    // action.nargs = 0
+                    action.nargs = SUPPRESS
+                    action.save_default = action.default
+                    action.default = SUPPRESS
+                }
+                [ namespace, remaining_args ] = this.parse_known_args(args,
+                                                                      namespace)
+                for (let action of positionals) {
+                    // remove the empty positional values from namespace
+                    let attr = getattr(namespace, action.dest)
+                    if (Array.isArray(attr) && attr.length === 0) {
+                        // eslint-disable-next-line no-console
+                        console.warn(sub('Do not expect %s in %s', action.dest, namespace))
+                        delattr(namespace, action.dest)
+                    }
+                }
+            } finally {
+                // restore nargs and usage before exiting
+                for (let action of positionals) {
+                    action.nargs = action.save_nargs
+                    action.default = action.save_default
+                }
+            }
+            let optionals = this._get_optional_actions()
+            try {
+                // parse positionals.  optionals aren't normally required, but
+                // they could be, so make sure they aren't.
+                for (let action of optionals) {
+                    action.save_required = action.required
+                    action.required = false
+                }
+                for (let group of this._mutually_exclusive_groups) {
+                    group.save_required = group.required
+                    group.required = false
+                }
+                [ namespace, extras ] = this.parse_known_args(remaining_args,
+                                                              namespace)
+            } finally {
+                // restore parser values before exiting
+                for (let action of optionals) {
+                    action.required = action.save_required
+                }
+                for (let group of this._mutually_exclusive_groups) {
+                    group.required = group.save_required
+                }
+            }
+        } finally {
+            this.usage = save_usage
+        }
+        return [ namespace, extras ]
+    }
+
+    // ========================
+    // Value conversion methods
+    // ========================
+    _get_values(action, arg_strings) {
+        // for everything but PARSER, REMAINDER args, strip out first '--'
+        if (![PARSER, REMAINDER].includes(action.nargs)) {
+            try {
+                _array_remove(arg_strings, '--')
+            } catch (err) {}
+        }
+
+        let value
+        // optional argument produces a default when not present
+        if (!arg_strings.length && action.nargs === OPTIONAL) {
+            if (action.option_strings.length) {
+                value = action.const
+            } else {
+                value = action.default
+            }
+            if (typeof value === 'string') {
+                value = this._get_value(action, value)
+                this._check_value(action, value)
+            }
+
+        // when nargs='*' on a positional, if there were no command-line
+        // args, use the default if it is anything other than None
+        } else if (!arg_strings.length && action.nargs === ZERO_OR_MORE &&
+              !action.option_strings.length) {
+            if (action.default !== undefined) {
+                value = action.default
+            } else {
+                value = arg_strings
+            }
+            this._check_value(action, value)
+
+        // single argument or optional argument produces a single value
+        } else if (arg_strings.length === 1 && [undefined, OPTIONAL].includes(action.nargs)) {
+            let arg_string = arg_strings[0]
+            value = this._get_value(action, arg_string)
+            this._check_value(action, value)
+
+        // REMAINDER arguments convert all values, checking none
+        } else if (action.nargs === REMAINDER) {
+            value = arg_strings.map(v => this._get_value(action, v))
+
+        // PARSER arguments convert all values, but check only the first
+        } else if (action.nargs === PARSER) {
+            value = arg_strings.map(v => this._get_value(action, v))
+            this._check_value(action, value[0])
+
+        // SUPPRESS argument does not put anything in the namespace
+        } else if (action.nargs === SUPPRESS) {
+            value = SUPPRESS
+
+        // all other types of nargs produce a list
+        } else {
+            value = arg_strings.map(v => this._get_value(action, v))
+            for (let v of value) {
+                this._check_value(action, v)
+            }
+        }
+
+        // return the converted value
+        return value
+    }
+
+    _get_value(action, arg_string) {
+        let type_func = this._registry_get('type', action.type, action.type)
+        if (typeof type_func !== 'function') {
+            let msg = '%r is not callable'
+            throw new ArgumentError(action, sub(msg, type_func))
+        }
+
+        // convert the value to the appropriate type
+        let result
+        try {
+            try {
+                result = type_func(arg_string)
+            } catch (err) {
+                // Dear TC39, why would you ever consider making es6 classes not callable?
+                // We had one universal interface, [[Call]], which worked for anything
+                // (with familiar this-instanceof guard for classes). Now we have two.
+                if (err instanceof TypeError &&
+                    /Class constructor .* cannot be invoked without 'new'/.test(err.message)) {
+                    // eslint-disable-next-line new-cap
+                    result = new type_func(arg_string)
+                } else {
+                    throw err
+                }
+            }
+
+        } catch (err) {
+            // ArgumentTypeErrors indicate errors
+            if (err instanceof ArgumentTypeError) {
+                //let name = getattr(action.type, 'name', repr(action.type))
+                let msg = err.message
+                throw new ArgumentError(action, msg)
+
+            // TypeErrors or ValueErrors also indicate errors
+            } else if (err instanceof TypeError) {
+                let name = getattr(action.type, 'name', repr(action.type))
+                let args = {type: name, value: arg_string}
+                let msg = 'invalid %(type)s value: %(value)r'
+                throw new ArgumentError(action, sub(msg, args))
+            } else {
+                throw err
+            }
+        }
+
+        // return the converted value
+        return result
+    }
+
+    _check_value(action, value) {
+        // converted value must be one of the choices (if specified)
+        if (action.choices !== undefined && !_choices_to_array(action.choices).includes(value)) {
+            let args = {value,
+                        choices: _choices_to_array(action.choices).map(repr).join(', ')}
+            let msg = 'invalid choice: %(value)r (choose from %(choices)s)'
+            throw new ArgumentError(action, sub(msg, args))
+        }
+    }
+
+    // =======================
+    // Help-formatting methods
+    // =======================
+    format_usage() {
+        let formatter = this._get_formatter()
+        formatter.add_usage(this.usage, this._actions,
+                            this._mutually_exclusive_groups)
+        return formatter.format_help()
+    }
+
+    format_help() {
+        let formatter = this._get_formatter()
+
+        // usage
+        formatter.add_usage(this.usage, this._actions,
+                            this._mutually_exclusive_groups)
+
+        // description
+        formatter.add_text(this.description)
+
+        // positionals, optionals and user-defined groups
+        for (let action_group of this._action_groups) {
+            formatter.start_section(action_group.title)
+            formatter.add_text(action_group.description)
+            formatter.add_arguments(action_group._group_actions)
+            formatter.end_section()
+        }
+
+        // epilog
+        formatter.add_text(this.epilog)
+
+        // determine help from format above
+        return formatter.format_help()
+    }
+
+    _get_formatter() {
+        // eslint-disable-next-line new-cap
+        return new this.formatter_class({ prog: this.prog })
+    }
+
+    // =====================
+    // Help-printing methods
+    // =====================
+    print_usage(file = undefined) {
+        if (file === undefined) file = process.stdout
+        this._print_message(this.format_usage(), file)
+    }
+
+    print_help(file = undefined) {
+        if (file === undefined) file = process.stdout
+        this._print_message(this.format_help(), file)
+    }
+
+    _print_message(message, file = undefined) {
+        if (message) {
+            if (file === undefined) file = process.stderr
+            file.write(message)
+        }
+    }
+
+    // ===============
+    // Exiting methods
+    // ===============
+    exit(status = 0, message = undefined) {
+        if (message) {
+            this._print_message(message, process.stderr)
+        }
+        process.exit(status)
+    }
+
+    error(message) {
+        /*
+         *  error(message: string)
+         *
+         *  Prints a usage message incorporating the message to stderr and
+         *  exits.
+         *
+         *  If you override this in a subclass, it should not return -- it
+         *  should either exit or raise an exception.
+         */
+
+        // LEGACY (v1 compatibility), debug mode
+        if (this.debug === true) throw new Error(message)
+        // end
+        this.print_usage(process.stderr)
+        let args = {prog: this.prog, message: message}
+        this.exit(2, sub('%(prog)s: error: %(message)s\n', args))
+    }
+}))
+
+
+module.exports = {
+    ArgumentParser,
+    ArgumentError,
+    ArgumentTypeError,
+    BooleanOptionalAction,
+    FileType,
+    HelpFormatter,
+    ArgumentDefaultsHelpFormatter,
+    RawDescriptionHelpFormatter,
+    RawTextHelpFormatter,
+    MetavarTypeHelpFormatter,
+    Namespace,
+    Action,
+    ONE_OR_MORE,
+    OPTIONAL,
+    PARSER,
+    REMAINDER,
+    SUPPRESS,
+    ZERO_OR_MORE
+}
+
+// LEGACY (v1 compatibility), Const alias
+Object.defineProperty(module.exports, 'Const', {
+    get() {
+        let result = {}
+        Object.entries({ ONE_OR_MORE, OPTIONAL, PARSER, REMAINDER, SUPPRESS, ZERO_OR_MORE }).forEach(([ n, v ]) => {
+            Object.defineProperty(result, n, {
+                get() {
+                    deprecate(n, sub('use argparse.%s instead of argparse.Const.%s', n, n))
+                    return v
+                }
+            })
+        })
+        Object.entries({ _UNRECOGNIZED_ARGS_ATTR }).forEach(([ n, v ]) => {
+            Object.defineProperty(result, n, {
+                get() {
+                    deprecate(n, sub('argparse.Const.%s is an internal symbol and will no longer be available', n))
+                    return v
+                }
+            })
+        })
+        return result
+    },
+    enumerable: false
+})
+// end
Index: frontend/node_modules/eslint/node_modules/argparse/lib/sub.js
===================================================================
--- frontend/node_modules/eslint/node_modules/argparse/lib/sub.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/argparse/lib/sub.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,67 @@
+// Limited implementation of python % string operator, supports only %s and %r for now
+// (other formats are not used here, but may appear in custom templates)
+
+'use strict'
+
+const { inspect } = require('util')
+
+
+module.exports = function sub(pattern, ...values) {
+    let regex = /%(?:(%)|(-)?(\*)?(?:\((\w+)\))?([A-Za-z]))/g
+
+    let result = pattern.replace(regex, function (_, is_literal, is_left_align, is_padded, name, format) {
+        if (is_literal) return '%'
+
+        let padded_count = 0
+        if (is_padded) {
+            if (values.length === 0) throw new TypeError('not enough arguments for format string')
+            padded_count = values.shift()
+            if (!Number.isInteger(padded_count)) throw new TypeError('* wants int')
+        }
+
+        let str
+        if (name !== undefined) {
+            let dict = values[0]
+            if (typeof dict !== 'object' || dict === null) throw new TypeError('format requires a mapping')
+            if (!(name in dict)) throw new TypeError(`no such key: '${name}'`)
+            str = dict[name]
+        } else {
+            if (values.length === 0) throw new TypeError('not enough arguments for format string')
+            str = values.shift()
+        }
+
+        switch (format) {
+            case 's':
+                str = String(str)
+                break
+            case 'r':
+                str = inspect(str)
+                break
+            case 'd':
+            case 'i':
+                if (typeof str !== 'number') {
+                    throw new TypeError(`%${format} format: a number is required, not ${typeof str}`)
+                }
+                str = String(str.toFixed(0))
+                break
+            default:
+                throw new TypeError(`unsupported format character '${format}'`)
+        }
+
+        if (padded_count > 0) {
+            return is_left_align ? str.padEnd(padded_count) : str.padStart(padded_count)
+        } else {
+            return str
+        }
+    })
+
+    if (values.length) {
+        if (values.length === 1 && typeof values[0] === 'object' && values[0] !== null) {
+            // mapping
+        } else {
+            throw new TypeError('not all arguments converted during string formatting')
+        }
+    }
+
+    return result
+}
Index: frontend/node_modules/eslint/node_modules/argparse/lib/textwrap.js
===================================================================
--- frontend/node_modules/eslint/node_modules/argparse/lib/textwrap.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/argparse/lib/textwrap.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,440 @@
+// Partial port of python's argparse module, version 3.9.0 (only wrap and fill functions):
+// https://github.com/python/cpython/blob/v3.9.0b4/Lib/textwrap.py
+
+'use strict'
+
+/*
+ * Text wrapping and filling.
+ */
+
+// Copyright (C) 1999-2001 Gregory P. Ward.
+// Copyright (C) 2002, 2003 Python Software Foundation.
+// Copyright (C) 2020 argparse.js authors
+// Originally written by Greg Ward <gward@python.net>
+
+// Hardcode the recognized whitespace characters to the US-ASCII
+// whitespace characters.  The main reason for doing this is that
+// some Unicode spaces (like \u00a0) are non-breaking whitespaces.
+//
+// This less funky little regex just split on recognized spaces. E.g.
+//   "Hello there -- you goof-ball, use the -b option!"
+// splits into
+//   Hello/ /there/ /--/ /you/ /goof-ball,/ /use/ /the/ /-b/ /option!/
+const wordsep_simple_re = /([\t\n\x0b\x0c\r ]+)/
+
+class TextWrapper {
+    /*
+     *  Object for wrapping/filling text.  The public interface consists of
+     *  the wrap() and fill() methods; the other methods are just there for
+     *  subclasses to override in order to tweak the default behaviour.
+     *  If you want to completely replace the main wrapping algorithm,
+     *  you'll probably have to override _wrap_chunks().
+     *
+     *  Several instance attributes control various aspects of wrapping:
+     *    width (default: 70)
+     *      the maximum width of wrapped lines (unless break_long_words
+     *      is false)
+     *    initial_indent (default: "")
+     *      string that will be prepended to the first line of wrapped
+     *      output.  Counts towards the line's width.
+     *    subsequent_indent (default: "")
+     *      string that will be prepended to all lines save the first
+     *      of wrapped output; also counts towards each line's width.
+     *    expand_tabs (default: true)
+     *      Expand tabs in input text to spaces before further processing.
+     *      Each tab will become 0 .. 'tabsize' spaces, depending on its position
+     *      in its line.  If false, each tab is treated as a single character.
+     *    tabsize (default: 8)
+     *      Expand tabs in input text to 0 .. 'tabsize' spaces, unless
+     *      'expand_tabs' is false.
+     *    replace_whitespace (default: true)
+     *      Replace all whitespace characters in the input text by spaces
+     *      after tab expansion.  Note that if expand_tabs is false and
+     *      replace_whitespace is true, every tab will be converted to a
+     *      single space!
+     *    fix_sentence_endings (default: false)
+     *      Ensure that sentence-ending punctuation is always followed
+     *      by two spaces.  Off by default because the algorithm is
+     *      (unavoidably) imperfect.
+     *    break_long_words (default: true)
+     *      Break words longer than 'width'.  If false, those words will not
+     *      be broken, and some lines might be longer than 'width'.
+     *    break_on_hyphens (default: true)
+     *      Allow breaking hyphenated words. If true, wrapping will occur
+     *      preferably on whitespaces and right after hyphens part of
+     *      compound words.
+     *    drop_whitespace (default: true)
+     *      Drop leading and trailing whitespace from lines.
+     *    max_lines (default: None)
+     *      Truncate wrapped lines.
+     *    placeholder (default: ' [...]')
+     *      Append to the last line of truncated text.
+     */
+
+    constructor(options = {}) {
+        let {
+            width = 70,
+            initial_indent = '',
+            subsequent_indent = '',
+            expand_tabs = true,
+            replace_whitespace = true,
+            fix_sentence_endings = false,
+            break_long_words = true,
+            drop_whitespace = true,
+            break_on_hyphens = true,
+            tabsize = 8,
+            max_lines = undefined,
+            placeholder=' [...]'
+        } = options
+
+        this.width = width
+        this.initial_indent = initial_indent
+        this.subsequent_indent = subsequent_indent
+        this.expand_tabs = expand_tabs
+        this.replace_whitespace = replace_whitespace
+        this.fix_sentence_endings = fix_sentence_endings
+        this.break_long_words = break_long_words
+        this.drop_whitespace = drop_whitespace
+        this.break_on_hyphens = break_on_hyphens
+        this.tabsize = tabsize
+        this.max_lines = max_lines
+        this.placeholder = placeholder
+    }
+
+
+    // -- Private methods -----------------------------------------------
+    // (possibly useful for subclasses to override)
+
+    _munge_whitespace(text) {
+        /*
+         *  _munge_whitespace(text : string) -> string
+         *
+         *  Munge whitespace in text: expand tabs and convert all other
+         *  whitespace characters to spaces.  Eg. " foo\\tbar\\n\\nbaz"
+         *  becomes " foo    bar  baz".
+         */
+        if (this.expand_tabs) {
+            text = text.replace(/\t/g, ' '.repeat(this.tabsize)) // not strictly correct in js
+        }
+        if (this.replace_whitespace) {
+            text = text.replace(/[\t\n\x0b\x0c\r]/g, ' ')
+        }
+        return text
+    }
+
+    _split(text) {
+        /*
+         *  _split(text : string) -> [string]
+         *
+         *  Split the text to wrap into indivisible chunks.  Chunks are
+         *  not quite the same as words; see _wrap_chunks() for full
+         *  details.  As an example, the text
+         *    Look, goof-ball -- use the -b option!
+         *  breaks into the following chunks:
+         *    'Look,', ' ', 'goof-', 'ball', ' ', '--', ' ',
+         *    'use', ' ', 'the', ' ', '-b', ' ', 'option!'
+         *  if break_on_hyphens is True, or in:
+         *    'Look,', ' ', 'goof-ball', ' ', '--', ' ',
+         *    'use', ' ', 'the', ' ', '-b', ' ', option!'
+         *  otherwise.
+         */
+        let chunks = text.split(wordsep_simple_re)
+        chunks = chunks.filter(Boolean)
+        return chunks
+    }
+
+    _handle_long_word(reversed_chunks, cur_line, cur_len, width) {
+        /*
+         *  _handle_long_word(chunks : [string],
+         *                    cur_line : [string],
+         *                    cur_len : int, width : int)
+         *
+         *  Handle a chunk of text (most likely a word, not whitespace) that
+         *  is too long to fit in any line.
+         */
+        // Figure out when indent is larger than the specified width, and make
+        // sure at least one character is stripped off on every pass
+        let space_left
+        if (width < 1) {
+            space_left = 1
+        } else {
+            space_left = width - cur_len
+        }
+
+        // If we're allowed to break long words, then do so: put as much
+        // of the next chunk onto the current line as will fit.
+        if (this.break_long_words) {
+            cur_line.push(reversed_chunks[reversed_chunks.length - 1].slice(0, space_left))
+            reversed_chunks[reversed_chunks.length - 1] = reversed_chunks[reversed_chunks.length - 1].slice(space_left)
+
+        // Otherwise, we have to preserve the long word intact.  Only add
+        // it to the current line if there's nothing already there --
+        // that minimizes how much we violate the width constraint.
+        } else if (!cur_line) {
+            cur_line.push(...reversed_chunks.pop())
+        }
+
+        // If we're not allowed to break long words, and there's already
+        // text on the current line, do nothing.  Next time through the
+        // main loop of _wrap_chunks(), we'll wind up here again, but
+        // cur_len will be zero, so the next line will be entirely
+        // devoted to the long word that we can't handle right now.
+    }
+
+    _wrap_chunks(chunks) {
+        /*
+         *  _wrap_chunks(chunks : [string]) -> [string]
+         *
+         *  Wrap a sequence of text chunks and return a list of lines of
+         *  length 'self.width' or less.  (If 'break_long_words' is false,
+         *  some lines may be longer than this.)  Chunks correspond roughly
+         *  to words and the whitespace between them: each chunk is
+         *  indivisible (modulo 'break_long_words'), but a line break can
+         *  come between any two chunks.  Chunks should not have internal
+         *  whitespace; ie. a chunk is either all whitespace or a "word".
+         *  Whitespace chunks will be removed from the beginning and end of
+         *  lines, but apart from that whitespace is preserved.
+         */
+        let lines = []
+        let indent
+        if (this.width <= 0) {
+            throw Error(`invalid width ${this.width} (must be > 0)`)
+        }
+        if (this.max_lines !== undefined) {
+            if (this.max_lines > 1) {
+                indent = this.subsequent_indent
+            } else {
+                indent = this.initial_indent
+            }
+            if (indent.length + this.placeholder.trimStart().length > this.width) {
+                throw Error('placeholder too large for max width')
+            }
+        }
+
+        // Arrange in reverse order so items can be efficiently popped
+        // from a stack of chucks.
+        chunks = chunks.reverse()
+
+        while (chunks.length > 0) {
+
+            // Start the list of chunks that will make up the current line.
+            // cur_len is just the length of all the chunks in cur_line.
+            let cur_line = []
+            let cur_len = 0
+
+            // Figure out which static string will prefix this line.
+            let indent
+            if (lines) {
+                indent = this.subsequent_indent
+            } else {
+                indent = this.initial_indent
+            }
+
+            // Maximum width for this line.
+            let width = this.width - indent.length
+
+            // First chunk on line is whitespace -- drop it, unless this
+            // is the very beginning of the text (ie. no lines started yet).
+            if (this.drop_whitespace && chunks[chunks.length - 1].trim() === '' && lines.length > 0) {
+                chunks.pop()
+            }
+
+            while (chunks.length > 0) {
+                let l = chunks[chunks.length - 1].length
+
+                // Can at least squeeze this chunk onto the current line.
+                if (cur_len + l <= width) {
+                    cur_line.push(chunks.pop())
+                    cur_len += l
+
+                // Nope, this line is full.
+                } else {
+                    break
+                }
+            }
+
+            // The current line is full, and the next chunk is too big to
+            // fit on *any* line (not just this one).
+            if (chunks.length && chunks[chunks.length - 1].length > width) {
+                this._handle_long_word(chunks, cur_line, cur_len, width)
+                cur_len = cur_line.map(l => l.length).reduce((a, b) => a + b, 0)
+            }
+
+            // If the last chunk on this line is all whitespace, drop it.
+            if (this.drop_whitespace && cur_line.length > 0 && cur_line[cur_line.length - 1].trim() === '') {
+                cur_len -= cur_line[cur_line.length - 1].length
+                cur_line.pop()
+            }
+
+            if (cur_line) {
+                if (this.max_lines === undefined ||
+                    lines.length + 1 < this.max_lines ||
+                    (chunks.length === 0 ||
+                     this.drop_whitespace &&
+                     chunks.length === 1 &&
+                     !chunks[0].trim()) && cur_len <= width) {
+                    // Convert current line back to a string and store it in
+                    // list of all lines (return value).
+                    lines.push(indent + cur_line.join(''))
+                } else {
+                    let had_break = false
+                    while (cur_line) {
+                        if (cur_line[cur_line.length - 1].trim() &&
+                            cur_len + this.placeholder.length <= width) {
+                            cur_line.push(this.placeholder)
+                            lines.push(indent + cur_line.join(''))
+                            had_break = true
+                            break
+                        }
+                        cur_len -= cur_line[-1].length
+                        cur_line.pop()
+                    }
+                    if (!had_break) {
+                        if (lines) {
+                            let prev_line = lines[lines.length - 1].trimEnd()
+                            if (prev_line.length + this.placeholder.length <=
+                                    this.width) {
+                                lines[lines.length - 1] = prev_line + this.placeholder
+                                break
+                            }
+                        }
+                        lines.push(indent + this.placeholder.lstrip())
+                    }
+                    break
+                }
+            }
+        }
+
+        return lines
+    }
+
+    _split_chunks(text) {
+        text = this._munge_whitespace(text)
+        return this._split(text)
+    }
+
+    // -- Public interface ----------------------------------------------
+
+    wrap(text) {
+        /*
+         *  wrap(text : string) -> [string]
+         *
+         *  Reformat the single paragraph in 'text' so it fits in lines of
+         *  no more than 'self.width' columns, and return a list of wrapped
+         *  lines.  Tabs in 'text' are expanded with string.expandtabs(),
+         *  and all other whitespace characters (including newline) are
+         *  converted to space.
+         */
+        let chunks = this._split_chunks(text)
+        // not implemented in js
+        //if (this.fix_sentence_endings) {
+        //    this._fix_sentence_endings(chunks)
+        //}
+        return this._wrap_chunks(chunks)
+    }
+
+    fill(text) {
+        /*
+         *  fill(text : string) -> string
+         *
+         *  Reformat the single paragraph in 'text' to fit in lines of no
+         *  more than 'self.width' columns, and return a new string
+         *  containing the entire wrapped paragraph.
+         */
+        return this.wrap(text).join('\n')
+    }
+}
+
+
+// -- Convenience interface ---------------------------------------------
+
+function wrap(text, options = {}) {
+    /*
+     *  Wrap a single paragraph of text, returning a list of wrapped lines.
+     *
+     *  Reformat the single paragraph in 'text' so it fits in lines of no
+     *  more than 'width' columns, and return a list of wrapped lines.  By
+     *  default, tabs in 'text' are expanded with string.expandtabs(), and
+     *  all other whitespace characters (including newline) are converted to
+     *  space.  See TextWrapper class for available keyword args to customize
+     *  wrapping behaviour.
+     */
+    let { width = 70, ...kwargs } = options
+    let w = new TextWrapper(Object.assign({ width }, kwargs))
+    return w.wrap(text)
+}
+
+function fill(text, options = {}) {
+    /*
+     *  Fill a single paragraph of text, returning a new string.
+     *
+     *  Reformat the single paragraph in 'text' to fit in lines of no more
+     *  than 'width' columns, and return a new string containing the entire
+     *  wrapped paragraph.  As with wrap(), tabs are expanded and other
+     *  whitespace characters converted to space.  See TextWrapper class for
+     *  available keyword args to customize wrapping behaviour.
+     */
+    let { width = 70, ...kwargs } = options
+    let w = new TextWrapper(Object.assign({ width }, kwargs))
+    return w.fill(text)
+}
+
+// -- Loosely related functionality -------------------------------------
+
+let _whitespace_only_re = /^[ \t]+$/mg
+let _leading_whitespace_re = /(^[ \t]*)(?:[^ \t\n])/mg
+
+function dedent(text) {
+    /*
+     *  Remove any common leading whitespace from every line in `text`.
+     *
+     *  This can be used to make triple-quoted strings line up with the left
+     *  edge of the display, while still presenting them in the source code
+     *  in indented form.
+     *
+     *  Note that tabs and spaces are both treated as whitespace, but they
+     *  are not equal: the lines "  hello" and "\\thello" are
+     *  considered to have no common leading whitespace.
+     *
+     *  Entirely blank lines are normalized to a newline character.
+     */
+    // Look for the longest leading string of spaces and tabs common to
+    // all lines.
+    let margin = undefined
+    text = text.replace(_whitespace_only_re, '')
+    let indents = text.match(_leading_whitespace_re) || []
+    for (let indent of indents) {
+        indent = indent.slice(0, -1)
+
+        if (margin === undefined) {
+            margin = indent
+
+        // Current line more deeply indented than previous winner:
+        // no change (previous winner is still on top).
+        } else if (indent.startsWith(margin)) {
+            // pass
+
+        // Current line consistent with and no deeper than previous winner:
+        // it's the new winner.
+        } else if (margin.startsWith(indent)) {
+            margin = indent
+
+        // Find the largest common whitespace between current line and previous
+        // winner.
+        } else {
+            for (let i = 0; i < margin.length && i < indent.length; i++) {
+                if (margin[i] !== indent[i]) {
+                    margin = margin.slice(0, i)
+                    break
+                }
+            }
+        }
+    }
+
+    if (margin) {
+        text = text.replace(new RegExp('^' + margin, 'mg'), '')
+    }
+    return text
+}
+
+module.exports = { wrap, fill, dedent }
Index: frontend/node_modules/eslint/node_modules/argparse/package.json
===================================================================
--- frontend/node_modules/eslint/node_modules/argparse/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/argparse/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,31 @@
+{
+  "name": "argparse",
+  "description": "CLI arguments parser. Native port of python's argparse.",
+  "version": "2.0.1",
+  "keywords": [
+    "cli",
+    "parser",
+    "argparse",
+    "option",
+    "args"
+  ],
+  "main": "argparse.js",
+  "files": [
+    "argparse.js",
+    "lib/"
+  ],
+  "license": "Python-2.0",
+  "repository": "nodeca/argparse",
+  "scripts": {
+    "lint": "eslint .",
+    "test": "npm run lint && nyc mocha",
+    "coverage": "npm run test && nyc report --reporter html"
+  },
+  "devDependencies": {
+    "@babel/eslint-parser": "^7.11.0",
+    "@babel/plugin-syntax-class-properties": "^7.10.4",
+    "eslint": "^7.5.0",
+    "mocha": "^8.0.1",
+    "nyc": "^15.1.0"
+  }
+}
Index: frontend/node_modules/eslint/node_modules/find-up/index.d.ts
===================================================================
--- frontend/node_modules/eslint/node_modules/find-up/index.d.ts	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/find-up/index.d.ts	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,138 @@
+/* eslint-disable @typescript-eslint/unified-signatures */
+import {Options as LocatePathOptions} from 'locate-path';
+
+declare const stop: unique symbol;
+
+declare namespace findUp {
+	interface Options extends LocatePathOptions {}
+
+	type StopSymbol = typeof stop;
+
+	type Match = string | StopSymbol | undefined;
+}
+
+declare const findUp: {
+	sync: {
+		/**
+		Synchronously check if a path exists.
+
+		@param path - Path to the file or directory.
+		@returns Whether the path exists.
+
+		@example
+		```
+		import findUp = require('find-up');
+
+		console.log(findUp.sync.exists('/Users/sindresorhus/unicorn.png'));
+		//=> true
+		```
+		*/
+		exists: (path: string) => boolean;
+
+		/**
+		Synchronously find a file or directory by walking up parent directories.
+
+		@param name - Name of the file or directory to find. Can be multiple.
+		@returns The first path found (by respecting the order of `name`s) or `undefined` if none could be found.
+		*/
+		(name: string | readonly string[], options?: findUp.Options): string | undefined;
+
+		/**
+		Synchronously find a file or directory by walking up parent directories.
+
+		@param matcher - Called for each directory in the search. Return a path or `findUp.stop` to stop the search.
+		@returns The first path found or `undefined` if none could be found.
+
+		@example
+		```
+		import path = require('path');
+		import findUp = require('find-up');
+
+		console.log(findUp.sync(directory => {
+			const hasUnicorns = findUp.sync.exists(path.join(directory, 'unicorn.png'));
+			return hasUnicorns && directory;
+		}, {type: 'directory'}));
+		//=> '/Users/sindresorhus'
+		```
+		*/
+		(matcher: (directory: string) => findUp.Match, options?: findUp.Options): string | undefined;
+	};
+
+	/**
+	Check if a path exists.
+
+	@param path - Path to a file or directory.
+	@returns Whether the path exists.
+
+	@example
+	```
+	import findUp = require('find-up');
+
+	(async () => {
+		console.log(await findUp.exists('/Users/sindresorhus/unicorn.png'));
+		//=> true
+	})();
+	```
+	*/
+	exists: (path: string) => Promise<boolean>;
+
+	/**
+	Return this in a `matcher` function to stop the search and force `findUp` to immediately return `undefined`.
+	*/
+	readonly stop: findUp.StopSymbol;
+
+	/**
+	Find a file or directory by walking up parent directories.
+
+	@param name - Name of the file or directory to find. Can be multiple.
+	@returns The first path found (by respecting the order of `name`s) or `undefined` if none could be found.
+
+	@example
+	```
+	// /
+	// └── Users
+	//     └── sindresorhus
+	//         ├── unicorn.png
+	//         └── foo
+	//             └── bar
+	//                 ├── baz
+	//                 └── example.js
+
+	// example.js
+	import findUp = require('find-up');
+
+	(async () => {
+		console.log(await findUp('unicorn.png'));
+		//=> '/Users/sindresorhus/unicorn.png'
+
+		console.log(await findUp(['rainbow.png', 'unicorn.png']));
+		//=> '/Users/sindresorhus/unicorn.png'
+	})();
+	```
+	*/
+	(name: string | readonly string[], options?: findUp.Options): Promise<string | undefined>;
+
+	/**
+	Find a file or directory by walking up parent directories.
+
+	@param matcher - Called for each directory in the search. Return a path or `findUp.stop` to stop the search.
+	@returns The first path found or `undefined` if none could be found.
+
+	@example
+	```
+	import path = require('path');
+	import findUp = require('find-up');
+
+	(async () => {
+		console.log(await findUp(async directory => {
+			const hasUnicorns = await findUp.exists(path.join(directory, 'unicorn.png'));
+			return hasUnicorns && directory;
+		}, {type: 'directory'}));
+		//=> '/Users/sindresorhus'
+	})();
+	```
+	*/
+	(matcher: (directory: string) => (findUp.Match | Promise<findUp.Match>), options?: findUp.Options): Promise<string | undefined>;
+};
+
+export = findUp;
Index: frontend/node_modules/eslint/node_modules/find-up/index.js
===================================================================
--- frontend/node_modules/eslint/node_modules/find-up/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/find-up/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,89 @@
+'use strict';
+const path = require('path');
+const locatePath = require('locate-path');
+const pathExists = require('path-exists');
+
+const stop = Symbol('findUp.stop');
+
+module.exports = async (name, options = {}) => {
+	let directory = path.resolve(options.cwd || '');
+	const {root} = path.parse(directory);
+	const paths = [].concat(name);
+
+	const runMatcher = async locateOptions => {
+		if (typeof name !== 'function') {
+			return locatePath(paths, locateOptions);
+		}
+
+		const foundPath = await name(locateOptions.cwd);
+		if (typeof foundPath === 'string') {
+			return locatePath([foundPath], locateOptions);
+		}
+
+		return foundPath;
+	};
+
+	// eslint-disable-next-line no-constant-condition
+	while (true) {
+		// eslint-disable-next-line no-await-in-loop
+		const foundPath = await runMatcher({...options, cwd: directory});
+
+		if (foundPath === stop) {
+			return;
+		}
+
+		if (foundPath) {
+			return path.resolve(directory, foundPath);
+		}
+
+		if (directory === root) {
+			return;
+		}
+
+		directory = path.dirname(directory);
+	}
+};
+
+module.exports.sync = (name, options = {}) => {
+	let directory = path.resolve(options.cwd || '');
+	const {root} = path.parse(directory);
+	const paths = [].concat(name);
+
+	const runMatcher = locateOptions => {
+		if (typeof name !== 'function') {
+			return locatePath.sync(paths, locateOptions);
+		}
+
+		const foundPath = name(locateOptions.cwd);
+		if (typeof foundPath === 'string') {
+			return locatePath.sync([foundPath], locateOptions);
+		}
+
+		return foundPath;
+	};
+
+	// eslint-disable-next-line no-constant-condition
+	while (true) {
+		const foundPath = runMatcher({...options, cwd: directory});
+
+		if (foundPath === stop) {
+			return;
+		}
+
+		if (foundPath) {
+			return path.resolve(directory, foundPath);
+		}
+
+		if (directory === root) {
+			return;
+		}
+
+		directory = path.dirname(directory);
+	}
+};
+
+module.exports.exists = pathExists;
+
+module.exports.sync.exists = pathExists.sync;
+
+module.exports.stop = stop;
Index: frontend/node_modules/eslint/node_modules/find-up/license
===================================================================
--- frontend/node_modules/eslint/node_modules/find-up/license	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/find-up/license	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Index: frontend/node_modules/eslint/node_modules/find-up/package.json
===================================================================
--- frontend/node_modules/eslint/node_modules/find-up/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/find-up/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,54 @@
+{
+	"name": "find-up",
+	"version": "5.0.0",
+	"description": "Find a file or directory by walking up parent directories",
+	"license": "MIT",
+	"repository": "sindresorhus/find-up",
+	"funding": "https://github.com/sponsors/sindresorhus",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "https://sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=10"
+	},
+	"scripts": {
+		"test": "xo && ava && tsd"
+	},
+	"files": [
+		"index.js",
+		"index.d.ts"
+	],
+	"keywords": [
+		"find",
+		"up",
+		"find-up",
+		"findup",
+		"look-up",
+		"look",
+		"file",
+		"search",
+		"match",
+		"package",
+		"resolve",
+		"parent",
+		"parents",
+		"folder",
+		"directory",
+		"walk",
+		"walking",
+		"path"
+	],
+	"dependencies": {
+		"locate-path": "^6.0.0",
+		"path-exists": "^4.0.0"
+	},
+	"devDependencies": {
+		"ava": "^2.1.0",
+		"is-path-inside": "^2.1.0",
+		"tempy": "^0.6.0",
+		"tsd": "^0.13.1",
+		"xo": "^0.33.0"
+	}
+}
Index: frontend/node_modules/eslint/node_modules/find-up/readme.md
===================================================================
--- frontend/node_modules/eslint/node_modules/find-up/readme.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/find-up/readme.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,151 @@
+# find-up [![Build Status](https://travis-ci.com/sindresorhus/find-up.svg?branch=master)](https://travis-ci.com/github/sindresorhus/find-up)
+
+> Find a file or directory by walking up parent directories
+
+## Install
+
+```
+$ npm install find-up
+```
+
+## Usage
+
+```
+/
+└── Users
+    └── sindresorhus
+        ├── unicorn.png
+        └── foo
+            └── bar
+                ├── baz
+                └── example.js
+```
+
+`example.js`
+
+```js
+const path = require('path');
+const findUp = require('find-up');
+
+(async () => {
+	console.log(await findUp('unicorn.png'));
+	//=> '/Users/sindresorhus/unicorn.png'
+
+	console.log(await findUp(['rainbow.png', 'unicorn.png']));
+	//=> '/Users/sindresorhus/unicorn.png'
+
+	console.log(await findUp(async directory => {
+		const hasUnicorns = await findUp.exists(path.join(directory, 'unicorn.png'));
+		return hasUnicorns && directory;
+	}, {type: 'directory'}));
+	//=> '/Users/sindresorhus'
+})();
+```
+
+## API
+
+### findUp(name, options?)
+### findUp(matcher, options?)
+
+Returns a `Promise` for either the path or `undefined` if it couldn't be found.
+
+### findUp([...name], options?)
+
+Returns a `Promise` for either the first path found (by respecting the order of the array) or `undefined` if none could be found.
+
+### findUp.sync(name, options?)
+### findUp.sync(matcher, options?)
+
+Returns a path or `undefined` if it couldn't be found.
+
+### findUp.sync([...name], options?)
+
+Returns the first path found (by respecting the order of the array) or `undefined` if none could be found.
+
+#### name
+
+Type: `string`
+
+Name of the file or directory to find.
+
+#### matcher
+
+Type: `Function`
+
+A function that will be called with each directory until it returns a `string` with the path, which stops the search, or the root directory has been reached and nothing was found. Useful if you want to match files with certain patterns, set of permissions, or other advanced use-cases.
+
+When using async mode, the `matcher` may optionally be an async or promise-returning function that returns the path.
+
+#### options
+
+Type: `object`
+
+##### cwd
+
+Type: `string`\
+Default: `process.cwd()`
+
+Directory to start from.
+
+##### type
+
+Type: `string`\
+Default: `'file'`\
+Values: `'file'` `'directory'`
+
+The type of paths that can match.
+
+##### allowSymlinks
+
+Type: `boolean`\
+Default: `true`
+
+Allow symbolic links to match if they point to the chosen path type.
+
+### findUp.exists(path)
+
+Returns a `Promise<boolean>` of whether the path exists.
+
+### findUp.sync.exists(path)
+
+Returns a `boolean` of whether the path exists.
+
+#### path
+
+Type: `string`
+
+Path to a file or directory.
+
+### findUp.stop
+
+A [`Symbol`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol) that can be returned by a `matcher` function to stop the search and cause `findUp` to immediately return `undefined`. Useful as a performance optimization in case the current working directory is deeply nested in the filesystem.
+
+```js
+const path = require('path');
+const findUp = require('find-up');
+
+(async () => {
+	await findUp(directory => {
+		return path.basename(directory) === 'work' ? findUp.stop : 'logo.png';
+	});
+})();
+```
+
+## Related
+
+- [find-up-cli](https://github.com/sindresorhus/find-up-cli) - CLI for this module
+- [pkg-up](https://github.com/sindresorhus/pkg-up) - Find the closest package.json file
+- [pkg-dir](https://github.com/sindresorhus/pkg-dir) - Find the root directory of an npm package
+- [resolve-from](https://github.com/sindresorhus/resolve-from) - Resolve the path of a module like `require.resolve()` but from a given path
+
+---
+
+<div align="center">
+	<b>
+		<a href="https://tidelift.com/subscription/pkg/npm-find-up?utm_source=npm-find-up&utm_medium=referral&utm_campaign=readme">Get professional support for 'find-up' with a Tidelift subscription</a>
+	</b>
+	<br>
+	<sub>
+		Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
+	</sub>
+</div>
Index: frontend/node_modules/eslint/node_modules/js-yaml/LICENSE
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/LICENSE	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/LICENSE	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,21 @@
+(The MIT License)
+
+Copyright (C) 2011-2015 by Vitaly Puzrin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
Index: frontend/node_modules/eslint/node_modules/js-yaml/README.md
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/README.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/README.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,247 @@
+JS-YAML - YAML 1.2 parser / writer for JavaScript
+=================================================
+
+[![CI](https://github.com/nodeca/js-yaml/workflows/CI/badge.svg?branch=master)](https://github.com/nodeca/js-yaml/actions)
+[![NPM version](https://img.shields.io/npm/v/js-yaml.svg)](https://www.npmjs.org/package/js-yaml)
+
+__[Online Demo](https://nodeca.github.io/js-yaml/)__
+
+
+This is an implementation of [YAML](https://yaml.org/), a human-friendly data
+serialization language. Started as [PyYAML](https://pyyaml.org/) port, it was
+completely rewritten from scratch. Now it's very fast, and supports 1.2 spec.
+
+
+Installation
+------------
+
+### YAML module for node.js
+
+```
+npm install js-yaml
+```
+
+
+### CLI executable
+
+If you want to inspect your YAML files from CLI, install js-yaml globally:
+
+```
+npm install -g js-yaml
+```
+
+#### Usage
+
+```
+usage: js-yaml [-h] [-v] [-c] [-t] file
+
+Positional arguments:
+  file           File with YAML document(s)
+
+Optional arguments:
+  -h, --help     Show this help message and exit.
+  -v, --version  Show program's version number and exit.
+  -c, --compact  Display errors in compact mode
+  -t, --trace    Show stack trace on error
+```
+
+
+API
+---
+
+Here we cover the most 'useful' methods. If you need advanced details (creating
+your own tags), see [examples](https://github.com/nodeca/js-yaml/tree/master/examples)
+for more info.
+
+``` javascript
+const yaml = require('js-yaml');
+const fs   = require('fs');
+
+// Get document, or throw exception on error
+try {
+  const doc = yaml.load(fs.readFileSync('/home/ixti/example.yml', 'utf8'));
+  console.log(doc);
+} catch (e) {
+  console.log(e);
+}
+```
+
+
+### load (string [ , options ])
+
+Parses `string` as single YAML document. Returns either a
+plain object, a string, a number, `null` or `undefined`, or throws `YAMLException` on error. By default, does
+not support regexps, functions and undefined.
+
+options:
+
+- `filename` _(default: null)_ - string to be used as a file path in
+  error/warning messages.
+- `onWarning` _(default: null)_ - function to call on warning messages.
+  Loader will call this function with an instance of `YAMLException` for each warning.
+- `schema` _(default: `DEFAULT_SCHEMA`)_ - specifies a schema to use.
+  - `FAILSAFE_SCHEMA` - only strings, arrays and plain objects:
+    https://www.yaml.org/spec/1.2/spec.html#id2802346
+  - `JSON_SCHEMA` - all JSON-supported types:
+    https://www.yaml.org/spec/1.2/spec.html#id2803231
+  - `CORE_SCHEMA` - same as `JSON_SCHEMA`:
+    https://www.yaml.org/spec/1.2/spec.html#id2804923
+  - `DEFAULT_SCHEMA` - all supported YAML types.
+- `json` _(default: false)_ - compatibility with JSON.parse behaviour. If true, then duplicate keys in a mapping will override values rather than throwing an error.
+
+NOTE: This function **does not** understand multi-document sources, it throws
+exception on those.
+
+NOTE: JS-YAML **does not** support schema-specific tag resolution restrictions.
+So, the JSON schema is not as strictly defined in the YAML specification.
+It allows numbers in any notation, use `Null` and `NULL` as `null`, etc.
+The core schema also has no such restrictions. It allows binary notation for integers.
+
+
+### loadAll (string [, iterator] [, options ])
+
+Same as `load()`, but understands multi-document sources. Applies
+`iterator` to each document if specified, or returns array of documents.
+
+``` javascript
+const yaml = require('js-yaml');
+
+yaml.loadAll(data, function (doc) {
+  console.log(doc);
+});
+```
+
+
+### dump (object [ , options ])
+
+Serializes `object` as a YAML document. Uses `DEFAULT_SCHEMA`, so it will
+throw an exception if you try to dump regexps or functions. However, you can
+disable exceptions by setting the `skipInvalid` option to `true`.
+
+options:
+
+- `indent` _(default: 2)_ - indentation width to use (in spaces).
+- `noArrayIndent` _(default: false)_ - when true, will not add an indentation level to array elements
+- `skipInvalid` _(default: false)_ - do not throw on invalid types (like function
+  in the safe schema) and skip pairs and single values with such types.
+- `flowLevel` _(default: -1)_ - specifies level of nesting, when to switch from
+  block to flow style for collections. -1 means block style everwhere
+- `styles` - "tag" => "style" map. Each tag may have own set of styles.
+- `schema` _(default: `DEFAULT_SCHEMA`)_ specifies a schema to use.
+- `sortKeys` _(default: `false`)_ - if `true`, sort keys when dumping YAML. If a
+  function, use the function to sort the keys.
+- `lineWidth` _(default: `80`)_ - set max line width. Set `-1` for unlimited width.
+- `noRefs` _(default: `false`)_ - if `true`, don't convert duplicate objects into references
+- `noCompatMode` _(default: `false`)_ - if `true` don't try to be compatible with older
+  yaml versions. Currently: don't quote "yes", "no" and so on, as required for YAML 1.1
+- `condenseFlow` _(default: `false`)_ - if `true` flow sequences will be condensed, omitting the space between `a, b`. Eg. `'[a,b]'`, and omitting the space between `key: value` and quoting the key. Eg. `'{"a":b}'` Can be useful when using yaml for pretty URL query params as spaces are %-encoded.
+- `quotingType` _(`'` or `"`, default: `'`)_ - strings will be quoted using this quoting style. If you specify single quotes, double quotes will still be used for non-printable characters.
+- `forceQuotes` _(default: `false`)_ - if `true`, all non-key strings will be quoted even if they normally don't need to.
+- `replacer` - callback `function (key, value)` called recursively on each key/value in source object (see `replacer` docs for `JSON.stringify`).
+
+The following table show availlable styles (e.g. "canonical",
+"binary"...) available for each tag (.e.g. !!null, !!int ...). Yaml
+output is shown on the right side after `=>` (default setting) or `->`:
+
+``` none
+!!null
+  "canonical"   -> "~"
+  "lowercase"   => "null"
+  "uppercase"   -> "NULL"
+  "camelcase"   -> "Null"
+  "empty"       -> ""
+
+!!int
+  "binary"      -> "0b1", "0b101010", "0b1110001111010"
+  "octal"       -> "0o1", "0o52", "0o16172"
+  "decimal"     => "1", "42", "7290"
+  "hexadecimal" -> "0x1", "0x2A", "0x1C7A"
+
+!!bool
+  "lowercase"   => "true", "false"
+  "uppercase"   -> "TRUE", "FALSE"
+  "camelcase"   -> "True", "False"
+
+!!float
+  "lowercase"   => ".nan", '.inf'
+  "uppercase"   -> ".NAN", '.INF'
+  "camelcase"   -> ".NaN", '.Inf'
+```
+
+Example:
+
+``` javascript
+dump(object, {
+  'styles': {
+    '!!null': 'canonical' // dump null as ~
+  },
+  'sortKeys': true        // sort object keys
+});
+```
+
+Supported YAML types
+--------------------
+
+The list of standard YAML tags and corresponding JavaScript types. See also
+[YAML tag discussion](https://pyyaml.org/wiki/YAMLTagDiscussion) and
+[YAML types repository](https://yaml.org/type/).
+
+```
+!!null ''                   # null
+!!bool 'yes'                # bool
+!!int '3...'                # number
+!!float '3.14...'           # number
+!!binary '...base64...'     # buffer
+!!timestamp 'YYYY-...'      # date
+!!omap [ ... ]              # array of key-value pairs
+!!pairs [ ... ]             # array or array pairs
+!!set { ... }               # array of objects with given keys and null values
+!!str '...'                 # string
+!!seq [ ... ]               # array
+!!map { ... }               # object
+```
+
+**JavaScript-specific tags**
+
+See [js-yaml-js-types](https://github.com/nodeca/js-yaml-js-types) for
+extra types.
+
+
+Caveats
+-------
+
+Note, that you use arrays or objects as key in JS-YAML. JS does not allow objects
+or arrays as keys, and stringifies (by calling `toString()` method) them at the
+moment of adding them.
+
+``` yaml
+---
+? [ foo, bar ]
+: - baz
+? { foo: bar }
+: - baz
+  - baz
+```
+
+``` javascript
+{ "foo,bar": ["baz"], "[object Object]": ["baz", "baz"] }
+```
+
+Also, reading of properties on implicit block mapping keys is not supported yet.
+So, the following YAML document cannot be loaded.
+
+``` yaml
+&anchor foo:
+  foo: bar
+  *anchor: duplicate key
+  baz: bat
+  *anchor: duplicate key
+```
+
+
+js-yaml for enterprise
+----------------------
+
+Available as part of the Tidelift Subscription
+
+The maintainers of js-yaml and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/npm-js-yaml?utm_source=npm-js-yaml&utm_medium=referral&utm_campaign=enterprise&utm_term=repo)
Index: frontend/node_modules/eslint/node_modules/js-yaml/bin/js-yaml.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/bin/js-yaml.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/bin/js-yaml.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,126 @@
+#!/usr/bin/env node
+
+
+'use strict';
+
+/*eslint-disable no-console*/
+
+
+var fs       = require('fs');
+var argparse = require('argparse');
+var yaml     = require('..');
+
+
+////////////////////////////////////////////////////////////////////////////////
+
+
+var cli = new argparse.ArgumentParser({
+  prog:     'js-yaml',
+  add_help:  true
+});
+
+cli.add_argument('-v', '--version', {
+  action: 'version',
+  version: require('../package.json').version
+});
+
+cli.add_argument('-c', '--compact', {
+  help:   'Display errors in compact mode',
+  action: 'store_true'
+});
+
+// deprecated (not needed after we removed output colors)
+// option suppressed, but not completely removed for compatibility
+cli.add_argument('-j', '--to-json', {
+  help:   argparse.SUPPRESS,
+  dest:   'json',
+  action: 'store_true'
+});
+
+cli.add_argument('-t', '--trace', {
+  help:   'Show stack trace on error',
+  action: 'store_true'
+});
+
+cli.add_argument('file', {
+  help:   'File to read, utf-8 encoded without BOM',
+  nargs:  '?',
+  default: '-'
+});
+
+
+////////////////////////////////////////////////////////////////////////////////
+
+
+var options = cli.parse_args();
+
+
+////////////////////////////////////////////////////////////////////////////////
+
+function readFile(filename, encoding, callback) {
+  if (options.file === '-') {
+    // read from stdin
+
+    var chunks = [];
+
+    process.stdin.on('data', function (chunk) {
+      chunks.push(chunk);
+    });
+
+    process.stdin.on('end', function () {
+      return callback(null, Buffer.concat(chunks).toString(encoding));
+    });
+  } else {
+    fs.readFile(filename, encoding, callback);
+  }
+}
+
+readFile(options.file, 'utf8', function (error, input) {
+  var output, isYaml;
+
+  if (error) {
+    if (error.code === 'ENOENT') {
+      console.error('File not found: ' + options.file);
+      process.exit(2);
+    }
+
+    console.error(
+      options.trace && error.stack ||
+      error.message ||
+      String(error));
+
+    process.exit(1);
+  }
+
+  try {
+    output = JSON.parse(input);
+    isYaml = false;
+  } catch (err) {
+    if (err instanceof SyntaxError) {
+      try {
+        output = [];
+        yaml.loadAll(input, function (doc) { output.push(doc); }, {});
+        isYaml = true;
+
+        if (output.length === 0) output = null;
+        else if (output.length === 1) output = output[0];
+
+      } catch (e) {
+        if (options.trace && err.stack) console.error(e.stack);
+        else console.error(e.toString(options.compact));
+
+        process.exit(1);
+      }
+    } else {
+      console.error(
+        options.trace && err.stack ||
+        err.message ||
+        String(err));
+
+      process.exit(1);
+    }
+  }
+
+  if (isYaml) console.log(JSON.stringify(output, null, '  '));
+  else console.log(yaml.dump(output));
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/dist/js-yaml.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/dist/js-yaml.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/dist/js-yaml.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,3880 @@
+
+/*! js-yaml 4.1.1 https://github.com/nodeca/js-yaml @license MIT */
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.jsyaml = {}));
+})(this, (function (exports) { 'use strict';
+
+  function isNothing(subject) {
+    return (typeof subject === 'undefined') || (subject === null);
+  }
+
+
+  function isObject(subject) {
+    return (typeof subject === 'object') && (subject !== null);
+  }
+
+
+  function toArray(sequence) {
+    if (Array.isArray(sequence)) return sequence;
+    else if (isNothing(sequence)) return [];
+
+    return [ sequence ];
+  }
+
+
+  function extend(target, source) {
+    var index, length, key, sourceKeys;
+
+    if (source) {
+      sourceKeys = Object.keys(source);
+
+      for (index = 0, length = sourceKeys.length; index < length; index += 1) {
+        key = sourceKeys[index];
+        target[key] = source[key];
+      }
+    }
+
+    return target;
+  }
+
+
+  function repeat(string, count) {
+    var result = '', cycle;
+
+    for (cycle = 0; cycle < count; cycle += 1) {
+      result += string;
+    }
+
+    return result;
+  }
+
+
+  function isNegativeZero(number) {
+    return (number === 0) && (Number.NEGATIVE_INFINITY === 1 / number);
+  }
+
+
+  var isNothing_1      = isNothing;
+  var isObject_1       = isObject;
+  var toArray_1        = toArray;
+  var repeat_1         = repeat;
+  var isNegativeZero_1 = isNegativeZero;
+  var extend_1         = extend;
+
+  var common = {
+  	isNothing: isNothing_1,
+  	isObject: isObject_1,
+  	toArray: toArray_1,
+  	repeat: repeat_1,
+  	isNegativeZero: isNegativeZero_1,
+  	extend: extend_1
+  };
+
+  // YAML error class. http://stackoverflow.com/questions/8458984
+
+
+  function formatError(exception, compact) {
+    var where = '', message = exception.reason || '(unknown reason)';
+
+    if (!exception.mark) return message;
+
+    if (exception.mark.name) {
+      where += 'in "' + exception.mark.name + '" ';
+    }
+
+    where += '(' + (exception.mark.line + 1) + ':' + (exception.mark.column + 1) + ')';
+
+    if (!compact && exception.mark.snippet) {
+      where += '\n\n' + exception.mark.snippet;
+    }
+
+    return message + ' ' + where;
+  }
+
+
+  function YAMLException$1(reason, mark) {
+    // Super constructor
+    Error.call(this);
+
+    this.name = 'YAMLException';
+    this.reason = reason;
+    this.mark = mark;
+    this.message = formatError(this, false);
+
+    // Include stack trace in error object
+    if (Error.captureStackTrace) {
+      // Chrome and NodeJS
+      Error.captureStackTrace(this, this.constructor);
+    } else {
+      // FF, IE 10+ and Safari 6+. Fallback for others
+      this.stack = (new Error()).stack || '';
+    }
+  }
+
+
+  // Inherit from Error
+  YAMLException$1.prototype = Object.create(Error.prototype);
+  YAMLException$1.prototype.constructor = YAMLException$1;
+
+
+  YAMLException$1.prototype.toString = function toString(compact) {
+    return this.name + ': ' + formatError(this, compact);
+  };
+
+
+  var exception = YAMLException$1;
+
+  // get snippet for a single line, respecting maxLength
+  function getLine(buffer, lineStart, lineEnd, position, maxLineLength) {
+    var head = '';
+    var tail = '';
+    var maxHalfLength = Math.floor(maxLineLength / 2) - 1;
+
+    if (position - lineStart > maxHalfLength) {
+      head = ' ... ';
+      lineStart = position - maxHalfLength + head.length;
+    }
+
+    if (lineEnd - position > maxHalfLength) {
+      tail = ' ...';
+      lineEnd = position + maxHalfLength - tail.length;
+    }
+
+    return {
+      str: head + buffer.slice(lineStart, lineEnd).replace(/\t/g, '→') + tail,
+      pos: position - lineStart + head.length // relative position
+    };
+  }
+
+
+  function padStart(string, max) {
+    return common.repeat(' ', max - string.length) + string;
+  }
+
+
+  function makeSnippet(mark, options) {
+    options = Object.create(options || null);
+
+    if (!mark.buffer) return null;
+
+    if (!options.maxLength) options.maxLength = 79;
+    if (typeof options.indent      !== 'number') options.indent      = 1;
+    if (typeof options.linesBefore !== 'number') options.linesBefore = 3;
+    if (typeof options.linesAfter  !== 'number') options.linesAfter  = 2;
+
+    var re = /\r?\n|\r|\0/g;
+    var lineStarts = [ 0 ];
+    var lineEnds = [];
+    var match;
+    var foundLineNo = -1;
+
+    while ((match = re.exec(mark.buffer))) {
+      lineEnds.push(match.index);
+      lineStarts.push(match.index + match[0].length);
+
+      if (mark.position <= match.index && foundLineNo < 0) {
+        foundLineNo = lineStarts.length - 2;
+      }
+    }
+
+    if (foundLineNo < 0) foundLineNo = lineStarts.length - 1;
+
+    var result = '', i, line;
+    var lineNoLength = Math.min(mark.line + options.linesAfter, lineEnds.length).toString().length;
+    var maxLineLength = options.maxLength - (options.indent + lineNoLength + 3);
+
+    for (i = 1; i <= options.linesBefore; i++) {
+      if (foundLineNo - i < 0) break;
+      line = getLine(
+        mark.buffer,
+        lineStarts[foundLineNo - i],
+        lineEnds[foundLineNo - i],
+        mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo - i]),
+        maxLineLength
+      );
+      result = common.repeat(' ', options.indent) + padStart((mark.line - i + 1).toString(), lineNoLength) +
+        ' | ' + line.str + '\n' + result;
+    }
+
+    line = getLine(mark.buffer, lineStarts[foundLineNo], lineEnds[foundLineNo], mark.position, maxLineLength);
+    result += common.repeat(' ', options.indent) + padStart((mark.line + 1).toString(), lineNoLength) +
+      ' | ' + line.str + '\n';
+    result += common.repeat('-', options.indent + lineNoLength + 3 + line.pos) + '^' + '\n';
+
+    for (i = 1; i <= options.linesAfter; i++) {
+      if (foundLineNo + i >= lineEnds.length) break;
+      line = getLine(
+        mark.buffer,
+        lineStarts[foundLineNo + i],
+        lineEnds[foundLineNo + i],
+        mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo + i]),
+        maxLineLength
+      );
+      result += common.repeat(' ', options.indent) + padStart((mark.line + i + 1).toString(), lineNoLength) +
+        ' | ' + line.str + '\n';
+    }
+
+    return result.replace(/\n$/, '');
+  }
+
+
+  var snippet = makeSnippet;
+
+  var TYPE_CONSTRUCTOR_OPTIONS = [
+    'kind',
+    'multi',
+    'resolve',
+    'construct',
+    'instanceOf',
+    'predicate',
+    'represent',
+    'representName',
+    'defaultStyle',
+    'styleAliases'
+  ];
+
+  var YAML_NODE_KINDS = [
+    'scalar',
+    'sequence',
+    'mapping'
+  ];
+
+  function compileStyleAliases(map) {
+    var result = {};
+
+    if (map !== null) {
+      Object.keys(map).forEach(function (style) {
+        map[style].forEach(function (alias) {
+          result[String(alias)] = style;
+        });
+      });
+    }
+
+    return result;
+  }
+
+  function Type$1(tag, options) {
+    options = options || {};
+
+    Object.keys(options).forEach(function (name) {
+      if (TYPE_CONSTRUCTOR_OPTIONS.indexOf(name) === -1) {
+        throw new exception('Unknown option "' + name + '" is met in definition of "' + tag + '" YAML type.');
+      }
+    });
+
+    // TODO: Add tag format check.
+    this.options       = options; // keep original options in case user wants to extend this type later
+    this.tag           = tag;
+    this.kind          = options['kind']          || null;
+    this.resolve       = options['resolve']       || function () { return true; };
+    this.construct     = options['construct']     || function (data) { return data; };
+    this.instanceOf    = options['instanceOf']    || null;
+    this.predicate     = options['predicate']     || null;
+    this.represent     = options['represent']     || null;
+    this.representName = options['representName'] || null;
+    this.defaultStyle  = options['defaultStyle']  || null;
+    this.multi         = options['multi']         || false;
+    this.styleAliases  = compileStyleAliases(options['styleAliases'] || null);
+
+    if (YAML_NODE_KINDS.indexOf(this.kind) === -1) {
+      throw new exception('Unknown kind "' + this.kind + '" is specified for "' + tag + '" YAML type.');
+    }
+  }
+
+  var type = Type$1;
+
+  /*eslint-disable max-len*/
+
+
+
+
+
+  function compileList(schema, name) {
+    var result = [];
+
+    schema[name].forEach(function (currentType) {
+      var newIndex = result.length;
+
+      result.forEach(function (previousType, previousIndex) {
+        if (previousType.tag === currentType.tag &&
+            previousType.kind === currentType.kind &&
+            previousType.multi === currentType.multi) {
+
+          newIndex = previousIndex;
+        }
+      });
+
+      result[newIndex] = currentType;
+    });
+
+    return result;
+  }
+
+
+  function compileMap(/* lists... */) {
+    var result = {
+          scalar: {},
+          sequence: {},
+          mapping: {},
+          fallback: {},
+          multi: {
+            scalar: [],
+            sequence: [],
+            mapping: [],
+            fallback: []
+          }
+        }, index, length;
+
+    function collectType(type) {
+      if (type.multi) {
+        result.multi[type.kind].push(type);
+        result.multi['fallback'].push(type);
+      } else {
+        result[type.kind][type.tag] = result['fallback'][type.tag] = type;
+      }
+    }
+
+    for (index = 0, length = arguments.length; index < length; index += 1) {
+      arguments[index].forEach(collectType);
+    }
+    return result;
+  }
+
+
+  function Schema$1(definition) {
+    return this.extend(definition);
+  }
+
+
+  Schema$1.prototype.extend = function extend(definition) {
+    var implicit = [];
+    var explicit = [];
+
+    if (definition instanceof type) {
+      // Schema.extend(type)
+      explicit.push(definition);
+
+    } else if (Array.isArray(definition)) {
+      // Schema.extend([ type1, type2, ... ])
+      explicit = explicit.concat(definition);
+
+    } else if (definition && (Array.isArray(definition.implicit) || Array.isArray(definition.explicit))) {
+      // Schema.extend({ explicit: [ type1, type2, ... ], implicit: [ type1, type2, ... ] })
+      if (definition.implicit) implicit = implicit.concat(definition.implicit);
+      if (definition.explicit) explicit = explicit.concat(definition.explicit);
+
+    } else {
+      throw new exception('Schema.extend argument should be a Type, [ Type ], ' +
+        'or a schema definition ({ implicit: [...], explicit: [...] })');
+    }
+
+    implicit.forEach(function (type$1) {
+      if (!(type$1 instanceof type)) {
+        throw new exception('Specified list of YAML types (or a single Type object) contains a non-Type object.');
+      }
+
+      if (type$1.loadKind && type$1.loadKind !== 'scalar') {
+        throw new exception('There is a non-scalar type in the implicit list of a schema. Implicit resolving of such types is not supported.');
+      }
+
+      if (type$1.multi) {
+        throw new exception('There is a multi type in the implicit list of a schema. Multi tags can only be listed as explicit.');
+      }
+    });
+
+    explicit.forEach(function (type$1) {
+      if (!(type$1 instanceof type)) {
+        throw new exception('Specified list of YAML types (or a single Type object) contains a non-Type object.');
+      }
+    });
+
+    var result = Object.create(Schema$1.prototype);
+
+    result.implicit = (this.implicit || []).concat(implicit);
+    result.explicit = (this.explicit || []).concat(explicit);
+
+    result.compiledImplicit = compileList(result, 'implicit');
+    result.compiledExplicit = compileList(result, 'explicit');
+    result.compiledTypeMap  = compileMap(result.compiledImplicit, result.compiledExplicit);
+
+    return result;
+  };
+
+
+  var schema = Schema$1;
+
+  var str = new type('tag:yaml.org,2002:str', {
+    kind: 'scalar',
+    construct: function (data) { return data !== null ? data : ''; }
+  });
+
+  var seq = new type('tag:yaml.org,2002:seq', {
+    kind: 'sequence',
+    construct: function (data) { return data !== null ? data : []; }
+  });
+
+  var map = new type('tag:yaml.org,2002:map', {
+    kind: 'mapping',
+    construct: function (data) { return data !== null ? data : {}; }
+  });
+
+  var failsafe = new schema({
+    explicit: [
+      str,
+      seq,
+      map
+    ]
+  });
+
+  function resolveYamlNull(data) {
+    if (data === null) return true;
+
+    var max = data.length;
+
+    return (max === 1 && data === '~') ||
+           (max === 4 && (data === 'null' || data === 'Null' || data === 'NULL'));
+  }
+
+  function constructYamlNull() {
+    return null;
+  }
+
+  function isNull(object) {
+    return object === null;
+  }
+
+  var _null = new type('tag:yaml.org,2002:null', {
+    kind: 'scalar',
+    resolve: resolveYamlNull,
+    construct: constructYamlNull,
+    predicate: isNull,
+    represent: {
+      canonical: function () { return '~';    },
+      lowercase: function () { return 'null'; },
+      uppercase: function () { return 'NULL'; },
+      camelcase: function () { return 'Null'; },
+      empty:     function () { return '';     }
+    },
+    defaultStyle: 'lowercase'
+  });
+
+  function resolveYamlBoolean(data) {
+    if (data === null) return false;
+
+    var max = data.length;
+
+    return (max === 4 && (data === 'true' || data === 'True' || data === 'TRUE')) ||
+           (max === 5 && (data === 'false' || data === 'False' || data === 'FALSE'));
+  }
+
+  function constructYamlBoolean(data) {
+    return data === 'true' ||
+           data === 'True' ||
+           data === 'TRUE';
+  }
+
+  function isBoolean(object) {
+    return Object.prototype.toString.call(object) === '[object Boolean]';
+  }
+
+  var bool = new type('tag:yaml.org,2002:bool', {
+    kind: 'scalar',
+    resolve: resolveYamlBoolean,
+    construct: constructYamlBoolean,
+    predicate: isBoolean,
+    represent: {
+      lowercase: function (object) { return object ? 'true' : 'false'; },
+      uppercase: function (object) { return object ? 'TRUE' : 'FALSE'; },
+      camelcase: function (object) { return object ? 'True' : 'False'; }
+    },
+    defaultStyle: 'lowercase'
+  });
+
+  function isHexCode(c) {
+    return ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) ||
+           ((0x41/* A */ <= c) && (c <= 0x46/* F */)) ||
+           ((0x61/* a */ <= c) && (c <= 0x66/* f */));
+  }
+
+  function isOctCode(c) {
+    return ((0x30/* 0 */ <= c) && (c <= 0x37/* 7 */));
+  }
+
+  function isDecCode(c) {
+    return ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */));
+  }
+
+  function resolveYamlInteger(data) {
+    if (data === null) return false;
+
+    var max = data.length,
+        index = 0,
+        hasDigits = false,
+        ch;
+
+    if (!max) return false;
+
+    ch = data[index];
+
+    // sign
+    if (ch === '-' || ch === '+') {
+      ch = data[++index];
+    }
+
+    if (ch === '0') {
+      // 0
+      if (index + 1 === max) return true;
+      ch = data[++index];
+
+      // base 2, base 8, base 16
+
+      if (ch === 'b') {
+        // base 2
+        index++;
+
+        for (; index < max; index++) {
+          ch = data[index];
+          if (ch === '_') continue;
+          if (ch !== '0' && ch !== '1') return false;
+          hasDigits = true;
+        }
+        return hasDigits && ch !== '_';
+      }
+
+
+      if (ch === 'x') {
+        // base 16
+        index++;
+
+        for (; index < max; index++) {
+          ch = data[index];
+          if (ch === '_') continue;
+          if (!isHexCode(data.charCodeAt(index))) return false;
+          hasDigits = true;
+        }
+        return hasDigits && ch !== '_';
+      }
+
+
+      if (ch === 'o') {
+        // base 8
+        index++;
+
+        for (; index < max; index++) {
+          ch = data[index];
+          if (ch === '_') continue;
+          if (!isOctCode(data.charCodeAt(index))) return false;
+          hasDigits = true;
+        }
+        return hasDigits && ch !== '_';
+      }
+    }
+
+    // base 10 (except 0)
+
+    // value should not start with `_`;
+    if (ch === '_') return false;
+
+    for (; index < max; index++) {
+      ch = data[index];
+      if (ch === '_') continue;
+      if (!isDecCode(data.charCodeAt(index))) {
+        return false;
+      }
+      hasDigits = true;
+    }
+
+    // Should have digits and should not end with `_`
+    if (!hasDigits || ch === '_') return false;
+
+    return true;
+  }
+
+  function constructYamlInteger(data) {
+    var value = data, sign = 1, ch;
+
+    if (value.indexOf('_') !== -1) {
+      value = value.replace(/_/g, '');
+    }
+
+    ch = value[0];
+
+    if (ch === '-' || ch === '+') {
+      if (ch === '-') sign = -1;
+      value = value.slice(1);
+      ch = value[0];
+    }
+
+    if (value === '0') return 0;
+
+    if (ch === '0') {
+      if (value[1] === 'b') return sign * parseInt(value.slice(2), 2);
+      if (value[1] === 'x') return sign * parseInt(value.slice(2), 16);
+      if (value[1] === 'o') return sign * parseInt(value.slice(2), 8);
+    }
+
+    return sign * parseInt(value, 10);
+  }
+
+  function isInteger(object) {
+    return (Object.prototype.toString.call(object)) === '[object Number]' &&
+           (object % 1 === 0 && !common.isNegativeZero(object));
+  }
+
+  var int = new type('tag:yaml.org,2002:int', {
+    kind: 'scalar',
+    resolve: resolveYamlInteger,
+    construct: constructYamlInteger,
+    predicate: isInteger,
+    represent: {
+      binary:      function (obj) { return obj >= 0 ? '0b' + obj.toString(2) : '-0b' + obj.toString(2).slice(1); },
+      octal:       function (obj) { return obj >= 0 ? '0o'  + obj.toString(8) : '-0o'  + obj.toString(8).slice(1); },
+      decimal:     function (obj) { return obj.toString(10); },
+      /* eslint-disable max-len */
+      hexadecimal: function (obj) { return obj >= 0 ? '0x' + obj.toString(16).toUpperCase() :  '-0x' + obj.toString(16).toUpperCase().slice(1); }
+    },
+    defaultStyle: 'decimal',
+    styleAliases: {
+      binary:      [ 2,  'bin' ],
+      octal:       [ 8,  'oct' ],
+      decimal:     [ 10, 'dec' ],
+      hexadecimal: [ 16, 'hex' ]
+    }
+  });
+
+  var YAML_FLOAT_PATTERN = new RegExp(
+    // 2.5e4, 2.5 and integers
+    '^(?:[-+]?(?:[0-9][0-9_]*)(?:\\.[0-9_]*)?(?:[eE][-+]?[0-9]+)?' +
+    // .2e4, .2
+    // special case, seems not from spec
+    '|\\.[0-9_]+(?:[eE][-+]?[0-9]+)?' +
+    // .inf
+    '|[-+]?\\.(?:inf|Inf|INF)' +
+    // .nan
+    '|\\.(?:nan|NaN|NAN))$');
+
+  function resolveYamlFloat(data) {
+    if (data === null) return false;
+
+    if (!YAML_FLOAT_PATTERN.test(data) ||
+        // Quick hack to not allow integers end with `_`
+        // Probably should update regexp & check speed
+        data[data.length - 1] === '_') {
+      return false;
+    }
+
+    return true;
+  }
+
+  function constructYamlFloat(data) {
+    var value, sign;
+
+    value  = data.replace(/_/g, '').toLowerCase();
+    sign   = value[0] === '-' ? -1 : 1;
+
+    if ('+-'.indexOf(value[0]) >= 0) {
+      value = value.slice(1);
+    }
+
+    if (value === '.inf') {
+      return (sign === 1) ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY;
+
+    } else if (value === '.nan') {
+      return NaN;
+    }
+    return sign * parseFloat(value, 10);
+  }
+
+
+  var SCIENTIFIC_WITHOUT_DOT = /^[-+]?[0-9]+e/;
+
+  function representYamlFloat(object, style) {
+    var res;
+
+    if (isNaN(object)) {
+      switch (style) {
+        case 'lowercase': return '.nan';
+        case 'uppercase': return '.NAN';
+        case 'camelcase': return '.NaN';
+      }
+    } else if (Number.POSITIVE_INFINITY === object) {
+      switch (style) {
+        case 'lowercase': return '.inf';
+        case 'uppercase': return '.INF';
+        case 'camelcase': return '.Inf';
+      }
+    } else if (Number.NEGATIVE_INFINITY === object) {
+      switch (style) {
+        case 'lowercase': return '-.inf';
+        case 'uppercase': return '-.INF';
+        case 'camelcase': return '-.Inf';
+      }
+    } else if (common.isNegativeZero(object)) {
+      return '-0.0';
+    }
+
+    res = object.toString(10);
+
+    // JS stringifier can build scientific format without dots: 5e-100,
+    // while YAML requres dot: 5.e-100. Fix it with simple hack
+
+    return SCIENTIFIC_WITHOUT_DOT.test(res) ? res.replace('e', '.e') : res;
+  }
+
+  function isFloat(object) {
+    return (Object.prototype.toString.call(object) === '[object Number]') &&
+           (object % 1 !== 0 || common.isNegativeZero(object));
+  }
+
+  var float = new type('tag:yaml.org,2002:float', {
+    kind: 'scalar',
+    resolve: resolveYamlFloat,
+    construct: constructYamlFloat,
+    predicate: isFloat,
+    represent: representYamlFloat,
+    defaultStyle: 'lowercase'
+  });
+
+  var json = failsafe.extend({
+    implicit: [
+      _null,
+      bool,
+      int,
+      float
+    ]
+  });
+
+  var core = json;
+
+  var YAML_DATE_REGEXP = new RegExp(
+    '^([0-9][0-9][0-9][0-9])'          + // [1] year
+    '-([0-9][0-9])'                    + // [2] month
+    '-([0-9][0-9])$');                   // [3] day
+
+  var YAML_TIMESTAMP_REGEXP = new RegExp(
+    '^([0-9][0-9][0-9][0-9])'          + // [1] year
+    '-([0-9][0-9]?)'                   + // [2] month
+    '-([0-9][0-9]?)'                   + // [3] day
+    '(?:[Tt]|[ \\t]+)'                 + // ...
+    '([0-9][0-9]?)'                    + // [4] hour
+    ':([0-9][0-9])'                    + // [5] minute
+    ':([0-9][0-9])'                    + // [6] second
+    '(?:\\.([0-9]*))?'                 + // [7] fraction
+    '(?:[ \\t]*(Z|([-+])([0-9][0-9]?)' + // [8] tz [9] tz_sign [10] tz_hour
+    '(?::([0-9][0-9]))?))?$');           // [11] tz_minute
+
+  function resolveYamlTimestamp(data) {
+    if (data === null) return false;
+    if (YAML_DATE_REGEXP.exec(data) !== null) return true;
+    if (YAML_TIMESTAMP_REGEXP.exec(data) !== null) return true;
+    return false;
+  }
+
+  function constructYamlTimestamp(data) {
+    var match, year, month, day, hour, minute, second, fraction = 0,
+        delta = null, tz_hour, tz_minute, date;
+
+    match = YAML_DATE_REGEXP.exec(data);
+    if (match === null) match = YAML_TIMESTAMP_REGEXP.exec(data);
+
+    if (match === null) throw new Error('Date resolve error');
+
+    // match: [1] year [2] month [3] day
+
+    year = +(match[1]);
+    month = +(match[2]) - 1; // JS month starts with 0
+    day = +(match[3]);
+
+    if (!match[4]) { // no hour
+      return new Date(Date.UTC(year, month, day));
+    }
+
+    // match: [4] hour [5] minute [6] second [7] fraction
+
+    hour = +(match[4]);
+    minute = +(match[5]);
+    second = +(match[6]);
+
+    if (match[7]) {
+      fraction = match[7].slice(0, 3);
+      while (fraction.length < 3) { // milli-seconds
+        fraction += '0';
+      }
+      fraction = +fraction;
+    }
+
+    // match: [8] tz [9] tz_sign [10] tz_hour [11] tz_minute
+
+    if (match[9]) {
+      tz_hour = +(match[10]);
+      tz_minute = +(match[11] || 0);
+      delta = (tz_hour * 60 + tz_minute) * 60000; // delta in mili-seconds
+      if (match[9] === '-') delta = -delta;
+    }
+
+    date = new Date(Date.UTC(year, month, day, hour, minute, second, fraction));
+
+    if (delta) date.setTime(date.getTime() - delta);
+
+    return date;
+  }
+
+  function representYamlTimestamp(object /*, style*/) {
+    return object.toISOString();
+  }
+
+  var timestamp = new type('tag:yaml.org,2002:timestamp', {
+    kind: 'scalar',
+    resolve: resolveYamlTimestamp,
+    construct: constructYamlTimestamp,
+    instanceOf: Date,
+    represent: representYamlTimestamp
+  });
+
+  function resolveYamlMerge(data) {
+    return data === '<<' || data === null;
+  }
+
+  var merge = new type('tag:yaml.org,2002:merge', {
+    kind: 'scalar',
+    resolve: resolveYamlMerge
+  });
+
+  /*eslint-disable no-bitwise*/
+
+
+
+
+
+  // [ 64, 65, 66 ] -> [ padding, CR, LF ]
+  var BASE64_MAP = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\n\r';
+
+
+  function resolveYamlBinary(data) {
+    if (data === null) return false;
+
+    var code, idx, bitlen = 0, max = data.length, map = BASE64_MAP;
+
+    // Convert one by one.
+    for (idx = 0; idx < max; idx++) {
+      code = map.indexOf(data.charAt(idx));
+
+      // Skip CR/LF
+      if (code > 64) continue;
+
+      // Fail on illegal characters
+      if (code < 0) return false;
+
+      bitlen += 6;
+    }
+
+    // If there are any bits left, source was corrupted
+    return (bitlen % 8) === 0;
+  }
+
+  function constructYamlBinary(data) {
+    var idx, tailbits,
+        input = data.replace(/[\r\n=]/g, ''), // remove CR/LF & padding to simplify scan
+        max = input.length,
+        map = BASE64_MAP,
+        bits = 0,
+        result = [];
+
+    // Collect by 6*4 bits (3 bytes)
+
+    for (idx = 0; idx < max; idx++) {
+      if ((idx % 4 === 0) && idx) {
+        result.push((bits >> 16) & 0xFF);
+        result.push((bits >> 8) & 0xFF);
+        result.push(bits & 0xFF);
+      }
+
+      bits = (bits << 6) | map.indexOf(input.charAt(idx));
+    }
+
+    // Dump tail
+
+    tailbits = (max % 4) * 6;
+
+    if (tailbits === 0) {
+      result.push((bits >> 16) & 0xFF);
+      result.push((bits >> 8) & 0xFF);
+      result.push(bits & 0xFF);
+    } else if (tailbits === 18) {
+      result.push((bits >> 10) & 0xFF);
+      result.push((bits >> 2) & 0xFF);
+    } else if (tailbits === 12) {
+      result.push((bits >> 4) & 0xFF);
+    }
+
+    return new Uint8Array(result);
+  }
+
+  function representYamlBinary(object /*, style*/) {
+    var result = '', bits = 0, idx, tail,
+        max = object.length,
+        map = BASE64_MAP;
+
+    // Convert every three bytes to 4 ASCII characters.
+
+    for (idx = 0; idx < max; idx++) {
+      if ((idx % 3 === 0) && idx) {
+        result += map[(bits >> 18) & 0x3F];
+        result += map[(bits >> 12) & 0x3F];
+        result += map[(bits >> 6) & 0x3F];
+        result += map[bits & 0x3F];
+      }
+
+      bits = (bits << 8) + object[idx];
+    }
+
+    // Dump tail
+
+    tail = max % 3;
+
+    if (tail === 0) {
+      result += map[(bits >> 18) & 0x3F];
+      result += map[(bits >> 12) & 0x3F];
+      result += map[(bits >> 6) & 0x3F];
+      result += map[bits & 0x3F];
+    } else if (tail === 2) {
+      result += map[(bits >> 10) & 0x3F];
+      result += map[(bits >> 4) & 0x3F];
+      result += map[(bits << 2) & 0x3F];
+      result += map[64];
+    } else if (tail === 1) {
+      result += map[(bits >> 2) & 0x3F];
+      result += map[(bits << 4) & 0x3F];
+      result += map[64];
+      result += map[64];
+    }
+
+    return result;
+  }
+
+  function isBinary(obj) {
+    return Object.prototype.toString.call(obj) ===  '[object Uint8Array]';
+  }
+
+  var binary = new type('tag:yaml.org,2002:binary', {
+    kind: 'scalar',
+    resolve: resolveYamlBinary,
+    construct: constructYamlBinary,
+    predicate: isBinary,
+    represent: representYamlBinary
+  });
+
+  var _hasOwnProperty$3 = Object.prototype.hasOwnProperty;
+  var _toString$2       = Object.prototype.toString;
+
+  function resolveYamlOmap(data) {
+    if (data === null) return true;
+
+    var objectKeys = [], index, length, pair, pairKey, pairHasKey,
+        object = data;
+
+    for (index = 0, length = object.length; index < length; index += 1) {
+      pair = object[index];
+      pairHasKey = false;
+
+      if (_toString$2.call(pair) !== '[object Object]') return false;
+
+      for (pairKey in pair) {
+        if (_hasOwnProperty$3.call(pair, pairKey)) {
+          if (!pairHasKey) pairHasKey = true;
+          else return false;
+        }
+      }
+
+      if (!pairHasKey) return false;
+
+      if (objectKeys.indexOf(pairKey) === -1) objectKeys.push(pairKey);
+      else return false;
+    }
+
+    return true;
+  }
+
+  function constructYamlOmap(data) {
+    return data !== null ? data : [];
+  }
+
+  var omap = new type('tag:yaml.org,2002:omap', {
+    kind: 'sequence',
+    resolve: resolveYamlOmap,
+    construct: constructYamlOmap
+  });
+
+  var _toString$1 = Object.prototype.toString;
+
+  function resolveYamlPairs(data) {
+    if (data === null) return true;
+
+    var index, length, pair, keys, result,
+        object = data;
+
+    result = new Array(object.length);
+
+    for (index = 0, length = object.length; index < length; index += 1) {
+      pair = object[index];
+
+      if (_toString$1.call(pair) !== '[object Object]') return false;
+
+      keys = Object.keys(pair);
+
+      if (keys.length !== 1) return false;
+
+      result[index] = [ keys[0], pair[keys[0]] ];
+    }
+
+    return true;
+  }
+
+  function constructYamlPairs(data) {
+    if (data === null) return [];
+
+    var index, length, pair, keys, result,
+        object = data;
+
+    result = new Array(object.length);
+
+    for (index = 0, length = object.length; index < length; index += 1) {
+      pair = object[index];
+
+      keys = Object.keys(pair);
+
+      result[index] = [ keys[0], pair[keys[0]] ];
+    }
+
+    return result;
+  }
+
+  var pairs = new type('tag:yaml.org,2002:pairs', {
+    kind: 'sequence',
+    resolve: resolveYamlPairs,
+    construct: constructYamlPairs
+  });
+
+  var _hasOwnProperty$2 = Object.prototype.hasOwnProperty;
+
+  function resolveYamlSet(data) {
+    if (data === null) return true;
+
+    var key, object = data;
+
+    for (key in object) {
+      if (_hasOwnProperty$2.call(object, key)) {
+        if (object[key] !== null) return false;
+      }
+    }
+
+    return true;
+  }
+
+  function constructYamlSet(data) {
+    return data !== null ? data : {};
+  }
+
+  var set = new type('tag:yaml.org,2002:set', {
+    kind: 'mapping',
+    resolve: resolveYamlSet,
+    construct: constructYamlSet
+  });
+
+  var _default = core.extend({
+    implicit: [
+      timestamp,
+      merge
+    ],
+    explicit: [
+      binary,
+      omap,
+      pairs,
+      set
+    ]
+  });
+
+  /*eslint-disable max-len,no-use-before-define*/
+
+
+
+
+
+
+
+  var _hasOwnProperty$1 = Object.prototype.hasOwnProperty;
+
+
+  var CONTEXT_FLOW_IN   = 1;
+  var CONTEXT_FLOW_OUT  = 2;
+  var CONTEXT_BLOCK_IN  = 3;
+  var CONTEXT_BLOCK_OUT = 4;
+
+
+  var CHOMPING_CLIP  = 1;
+  var CHOMPING_STRIP = 2;
+  var CHOMPING_KEEP  = 3;
+
+
+  var PATTERN_NON_PRINTABLE         = /[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x84\x86-\x9F\uFFFE\uFFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]/;
+  var PATTERN_NON_ASCII_LINE_BREAKS = /[\x85\u2028\u2029]/;
+  var PATTERN_FLOW_INDICATORS       = /[,\[\]\{\}]/;
+  var PATTERN_TAG_HANDLE            = /^(?:!|!!|![a-z\-]+!)$/i;
+  var PATTERN_TAG_URI               = /^(?:!|[^,\[\]\{\}])(?:%[0-9a-f]{2}|[0-9a-z\-#;\/\?:@&=\+\$,_\.!~\*'\(\)\[\]])*$/i;
+
+
+  function _class(obj) { return Object.prototype.toString.call(obj); }
+
+  function is_EOL(c) {
+    return (c === 0x0A/* LF */) || (c === 0x0D/* CR */);
+  }
+
+  function is_WHITE_SPACE(c) {
+    return (c === 0x09/* Tab */) || (c === 0x20/* Space */);
+  }
+
+  function is_WS_OR_EOL(c) {
+    return (c === 0x09/* Tab */) ||
+           (c === 0x20/* Space */) ||
+           (c === 0x0A/* LF */) ||
+           (c === 0x0D/* CR */);
+  }
+
+  function is_FLOW_INDICATOR(c) {
+    return c === 0x2C/* , */ ||
+           c === 0x5B/* [ */ ||
+           c === 0x5D/* ] */ ||
+           c === 0x7B/* { */ ||
+           c === 0x7D/* } */;
+  }
+
+  function fromHexCode(c) {
+    var lc;
+
+    if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) {
+      return c - 0x30;
+    }
+
+    /*eslint-disable no-bitwise*/
+    lc = c | 0x20;
+
+    if ((0x61/* a */ <= lc) && (lc <= 0x66/* f */)) {
+      return lc - 0x61 + 10;
+    }
+
+    return -1;
+  }
+
+  function escapedHexLen(c) {
+    if (c === 0x78/* x */) { return 2; }
+    if (c === 0x75/* u */) { return 4; }
+    if (c === 0x55/* U */) { return 8; }
+    return 0;
+  }
+
+  function fromDecimalCode(c) {
+    if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) {
+      return c - 0x30;
+    }
+
+    return -1;
+  }
+
+  function simpleEscapeSequence(c) {
+    /* eslint-disable indent */
+    return (c === 0x30/* 0 */) ? '\x00' :
+          (c === 0x61/* a */) ? '\x07' :
+          (c === 0x62/* b */) ? '\x08' :
+          (c === 0x74/* t */) ? '\x09' :
+          (c === 0x09/* Tab */) ? '\x09' :
+          (c === 0x6E/* n */) ? '\x0A' :
+          (c === 0x76/* v */) ? '\x0B' :
+          (c === 0x66/* f */) ? '\x0C' :
+          (c === 0x72/* r */) ? '\x0D' :
+          (c === 0x65/* e */) ? '\x1B' :
+          (c === 0x20/* Space */) ? ' ' :
+          (c === 0x22/* " */) ? '\x22' :
+          (c === 0x2F/* / */) ? '/' :
+          (c === 0x5C/* \ */) ? '\x5C' :
+          (c === 0x4E/* N */) ? '\x85' :
+          (c === 0x5F/* _ */) ? '\xA0' :
+          (c === 0x4C/* L */) ? '\u2028' :
+          (c === 0x50/* P */) ? '\u2029' : '';
+  }
+
+  function charFromCodepoint(c) {
+    if (c <= 0xFFFF) {
+      return String.fromCharCode(c);
+    }
+    // Encode UTF-16 surrogate pair
+    // https://en.wikipedia.org/wiki/UTF-16#Code_points_U.2B010000_to_U.2B10FFFF
+    return String.fromCharCode(
+      ((c - 0x010000) >> 10) + 0xD800,
+      ((c - 0x010000) & 0x03FF) + 0xDC00
+    );
+  }
+
+  // set a property of a literal object, while protecting against prototype pollution,
+  // see https://github.com/nodeca/js-yaml/issues/164 for more details
+  function setProperty(object, key, value) {
+    // used for this specific key only because Object.defineProperty is slow
+    if (key === '__proto__') {
+      Object.defineProperty(object, key, {
+        configurable: true,
+        enumerable: true,
+        writable: true,
+        value: value
+      });
+    } else {
+      object[key] = value;
+    }
+  }
+
+  var simpleEscapeCheck = new Array(256); // integer, for fast access
+  var simpleEscapeMap = new Array(256);
+  for (var i = 0; i < 256; i++) {
+    simpleEscapeCheck[i] = simpleEscapeSequence(i) ? 1 : 0;
+    simpleEscapeMap[i] = simpleEscapeSequence(i);
+  }
+
+
+  function State$1(input, options) {
+    this.input = input;
+
+    this.filename  = options['filename']  || null;
+    this.schema    = options['schema']    || _default;
+    this.onWarning = options['onWarning'] || null;
+    // (Hidden) Remove? makes the loader to expect YAML 1.1 documents
+    // if such documents have no explicit %YAML directive
+    this.legacy    = options['legacy']    || false;
+
+    this.json      = options['json']      || false;
+    this.listener  = options['listener']  || null;
+
+    this.implicitTypes = this.schema.compiledImplicit;
+    this.typeMap       = this.schema.compiledTypeMap;
+
+    this.length     = input.length;
+    this.position   = 0;
+    this.line       = 0;
+    this.lineStart  = 0;
+    this.lineIndent = 0;
+
+    // position of first leading tab in the current line,
+    // used to make sure there are no tabs in the indentation
+    this.firstTabInLine = -1;
+
+    this.documents = [];
+
+    /*
+    this.version;
+    this.checkLineBreaks;
+    this.tagMap;
+    this.anchorMap;
+    this.tag;
+    this.anchor;
+    this.kind;
+    this.result;*/
+
+  }
+
+
+  function generateError(state, message) {
+    var mark = {
+      name:     state.filename,
+      buffer:   state.input.slice(0, -1), // omit trailing \0
+      position: state.position,
+      line:     state.line,
+      column:   state.position - state.lineStart
+    };
+
+    mark.snippet = snippet(mark);
+
+    return new exception(message, mark);
+  }
+
+  function throwError(state, message) {
+    throw generateError(state, message);
+  }
+
+  function throwWarning(state, message) {
+    if (state.onWarning) {
+      state.onWarning.call(null, generateError(state, message));
+    }
+  }
+
+
+  var directiveHandlers = {
+
+    YAML: function handleYamlDirective(state, name, args) {
+
+      var match, major, minor;
+
+      if (state.version !== null) {
+        throwError(state, 'duplication of %YAML directive');
+      }
+
+      if (args.length !== 1) {
+        throwError(state, 'YAML directive accepts exactly one argument');
+      }
+
+      match = /^([0-9]+)\.([0-9]+)$/.exec(args[0]);
+
+      if (match === null) {
+        throwError(state, 'ill-formed argument of the YAML directive');
+      }
+
+      major = parseInt(match[1], 10);
+      minor = parseInt(match[2], 10);
+
+      if (major !== 1) {
+        throwError(state, 'unacceptable YAML version of the document');
+      }
+
+      state.version = args[0];
+      state.checkLineBreaks = (minor < 2);
+
+      if (minor !== 1 && minor !== 2) {
+        throwWarning(state, 'unsupported YAML version of the document');
+      }
+    },
+
+    TAG: function handleTagDirective(state, name, args) {
+
+      var handle, prefix;
+
+      if (args.length !== 2) {
+        throwError(state, 'TAG directive accepts exactly two arguments');
+      }
+
+      handle = args[0];
+      prefix = args[1];
+
+      if (!PATTERN_TAG_HANDLE.test(handle)) {
+        throwError(state, 'ill-formed tag handle (first argument) of the TAG directive');
+      }
+
+      if (_hasOwnProperty$1.call(state.tagMap, handle)) {
+        throwError(state, 'there is a previously declared suffix for "' + handle + '" tag handle');
+      }
+
+      if (!PATTERN_TAG_URI.test(prefix)) {
+        throwError(state, 'ill-formed tag prefix (second argument) of the TAG directive');
+      }
+
+      try {
+        prefix = decodeURIComponent(prefix);
+      } catch (err) {
+        throwError(state, 'tag prefix is malformed: ' + prefix);
+      }
+
+      state.tagMap[handle] = prefix;
+    }
+  };
+
+
+  function captureSegment(state, start, end, checkJson) {
+    var _position, _length, _character, _result;
+
+    if (start < end) {
+      _result = state.input.slice(start, end);
+
+      if (checkJson) {
+        for (_position = 0, _length = _result.length; _position < _length; _position += 1) {
+          _character = _result.charCodeAt(_position);
+          if (!(_character === 0x09 ||
+                (0x20 <= _character && _character <= 0x10FFFF))) {
+            throwError(state, 'expected valid JSON character');
+          }
+        }
+      } else if (PATTERN_NON_PRINTABLE.test(_result)) {
+        throwError(state, 'the stream contains non-printable characters');
+      }
+
+      state.result += _result;
+    }
+  }
+
+  function mergeMappings(state, destination, source, overridableKeys) {
+    var sourceKeys, key, index, quantity;
+
+    if (!common.isObject(source)) {
+      throwError(state, 'cannot merge mappings; the provided source object is unacceptable');
+    }
+
+    sourceKeys = Object.keys(source);
+
+    for (index = 0, quantity = sourceKeys.length; index < quantity; index += 1) {
+      key = sourceKeys[index];
+
+      if (!_hasOwnProperty$1.call(destination, key)) {
+        setProperty(destination, key, source[key]);
+        overridableKeys[key] = true;
+      }
+    }
+  }
+
+  function storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode,
+    startLine, startLineStart, startPos) {
+
+    var index, quantity;
+
+    // The output is a plain object here, so keys can only be strings.
+    // We need to convert keyNode to a string, but doing so can hang the process
+    // (deeply nested arrays that explode exponentially using aliases).
+    if (Array.isArray(keyNode)) {
+      keyNode = Array.prototype.slice.call(keyNode);
+
+      for (index = 0, quantity = keyNode.length; index < quantity; index += 1) {
+        if (Array.isArray(keyNode[index])) {
+          throwError(state, 'nested arrays are not supported inside keys');
+        }
+
+        if (typeof keyNode === 'object' && _class(keyNode[index]) === '[object Object]') {
+          keyNode[index] = '[object Object]';
+        }
+      }
+    }
+
+    // Avoid code execution in load() via toString property
+    // (still use its own toString for arrays, timestamps,
+    // and whatever user schema extensions happen to have @@toStringTag)
+    if (typeof keyNode === 'object' && _class(keyNode) === '[object Object]') {
+      keyNode = '[object Object]';
+    }
+
+
+    keyNode = String(keyNode);
+
+    if (_result === null) {
+      _result = {};
+    }
+
+    if (keyTag === 'tag:yaml.org,2002:merge') {
+      if (Array.isArray(valueNode)) {
+        for (index = 0, quantity = valueNode.length; index < quantity; index += 1) {
+          mergeMappings(state, _result, valueNode[index], overridableKeys);
+        }
+      } else {
+        mergeMappings(state, _result, valueNode, overridableKeys);
+      }
+    } else {
+      if (!state.json &&
+          !_hasOwnProperty$1.call(overridableKeys, keyNode) &&
+          _hasOwnProperty$1.call(_result, keyNode)) {
+        state.line = startLine || state.line;
+        state.lineStart = startLineStart || state.lineStart;
+        state.position = startPos || state.position;
+        throwError(state, 'duplicated mapping key');
+      }
+
+      setProperty(_result, keyNode, valueNode);
+      delete overridableKeys[keyNode];
+    }
+
+    return _result;
+  }
+
+  function readLineBreak(state) {
+    var ch;
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (ch === 0x0A/* LF */) {
+      state.position++;
+    } else if (ch === 0x0D/* CR */) {
+      state.position++;
+      if (state.input.charCodeAt(state.position) === 0x0A/* LF */) {
+        state.position++;
+      }
+    } else {
+      throwError(state, 'a line break is expected');
+    }
+
+    state.line += 1;
+    state.lineStart = state.position;
+    state.firstTabInLine = -1;
+  }
+
+  function skipSeparationSpace(state, allowComments, checkIndent) {
+    var lineBreaks = 0,
+        ch = state.input.charCodeAt(state.position);
+
+    while (ch !== 0) {
+      while (is_WHITE_SPACE(ch)) {
+        if (ch === 0x09/* Tab */ && state.firstTabInLine === -1) {
+          state.firstTabInLine = state.position;
+        }
+        ch = state.input.charCodeAt(++state.position);
+      }
+
+      if (allowComments && ch === 0x23/* # */) {
+        do {
+          ch = state.input.charCodeAt(++state.position);
+        } while (ch !== 0x0A/* LF */ && ch !== 0x0D/* CR */ && ch !== 0);
+      }
+
+      if (is_EOL(ch)) {
+        readLineBreak(state);
+
+        ch = state.input.charCodeAt(state.position);
+        lineBreaks++;
+        state.lineIndent = 0;
+
+        while (ch === 0x20/* Space */) {
+          state.lineIndent++;
+          ch = state.input.charCodeAt(++state.position);
+        }
+      } else {
+        break;
+      }
+    }
+
+    if (checkIndent !== -1 && lineBreaks !== 0 && state.lineIndent < checkIndent) {
+      throwWarning(state, 'deficient indentation');
+    }
+
+    return lineBreaks;
+  }
+
+  function testDocumentSeparator(state) {
+    var _position = state.position,
+        ch;
+
+    ch = state.input.charCodeAt(_position);
+
+    // Condition state.position === state.lineStart is tested
+    // in parent on each call, for efficiency. No needs to test here again.
+    if ((ch === 0x2D/* - */ || ch === 0x2E/* . */) &&
+        ch === state.input.charCodeAt(_position + 1) &&
+        ch === state.input.charCodeAt(_position + 2)) {
+
+      _position += 3;
+
+      ch = state.input.charCodeAt(_position);
+
+      if (ch === 0 || is_WS_OR_EOL(ch)) {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  function writeFoldedLines(state, count) {
+    if (count === 1) {
+      state.result += ' ';
+    } else if (count > 1) {
+      state.result += common.repeat('\n', count - 1);
+    }
+  }
+
+
+  function readPlainScalar(state, nodeIndent, withinFlowCollection) {
+    var preceding,
+        following,
+        captureStart,
+        captureEnd,
+        hasPendingContent,
+        _line,
+        _lineStart,
+        _lineIndent,
+        _kind = state.kind,
+        _result = state.result,
+        ch;
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (is_WS_OR_EOL(ch)      ||
+        is_FLOW_INDICATOR(ch) ||
+        ch === 0x23/* # */    ||
+        ch === 0x26/* & */    ||
+        ch === 0x2A/* * */    ||
+        ch === 0x21/* ! */    ||
+        ch === 0x7C/* | */    ||
+        ch === 0x3E/* > */    ||
+        ch === 0x27/* ' */    ||
+        ch === 0x22/* " */    ||
+        ch === 0x25/* % */    ||
+        ch === 0x40/* @ */    ||
+        ch === 0x60/* ` */) {
+      return false;
+    }
+
+    if (ch === 0x3F/* ? */ || ch === 0x2D/* - */) {
+      following = state.input.charCodeAt(state.position + 1);
+
+      if (is_WS_OR_EOL(following) ||
+          withinFlowCollection && is_FLOW_INDICATOR(following)) {
+        return false;
+      }
+    }
+
+    state.kind = 'scalar';
+    state.result = '';
+    captureStart = captureEnd = state.position;
+    hasPendingContent = false;
+
+    while (ch !== 0) {
+      if (ch === 0x3A/* : */) {
+        following = state.input.charCodeAt(state.position + 1);
+
+        if (is_WS_OR_EOL(following) ||
+            withinFlowCollection && is_FLOW_INDICATOR(following)) {
+          break;
+        }
+
+      } else if (ch === 0x23/* # */) {
+        preceding = state.input.charCodeAt(state.position - 1);
+
+        if (is_WS_OR_EOL(preceding)) {
+          break;
+        }
+
+      } else if ((state.position === state.lineStart && testDocumentSeparator(state)) ||
+                 withinFlowCollection && is_FLOW_INDICATOR(ch)) {
+        break;
+
+      } else if (is_EOL(ch)) {
+        _line = state.line;
+        _lineStart = state.lineStart;
+        _lineIndent = state.lineIndent;
+        skipSeparationSpace(state, false, -1);
+
+        if (state.lineIndent >= nodeIndent) {
+          hasPendingContent = true;
+          ch = state.input.charCodeAt(state.position);
+          continue;
+        } else {
+          state.position = captureEnd;
+          state.line = _line;
+          state.lineStart = _lineStart;
+          state.lineIndent = _lineIndent;
+          break;
+        }
+      }
+
+      if (hasPendingContent) {
+        captureSegment(state, captureStart, captureEnd, false);
+        writeFoldedLines(state, state.line - _line);
+        captureStart = captureEnd = state.position;
+        hasPendingContent = false;
+      }
+
+      if (!is_WHITE_SPACE(ch)) {
+        captureEnd = state.position + 1;
+      }
+
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    captureSegment(state, captureStart, captureEnd, false);
+
+    if (state.result) {
+      return true;
+    }
+
+    state.kind = _kind;
+    state.result = _result;
+    return false;
+  }
+
+  function readSingleQuotedScalar(state, nodeIndent) {
+    var ch,
+        captureStart, captureEnd;
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (ch !== 0x27/* ' */) {
+      return false;
+    }
+
+    state.kind = 'scalar';
+    state.result = '';
+    state.position++;
+    captureStart = captureEnd = state.position;
+
+    while ((ch = state.input.charCodeAt(state.position)) !== 0) {
+      if (ch === 0x27/* ' */) {
+        captureSegment(state, captureStart, state.position, true);
+        ch = state.input.charCodeAt(++state.position);
+
+        if (ch === 0x27/* ' */) {
+          captureStart = state.position;
+          state.position++;
+          captureEnd = state.position;
+        } else {
+          return true;
+        }
+
+      } else if (is_EOL(ch)) {
+        captureSegment(state, captureStart, captureEnd, true);
+        writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
+        captureStart = captureEnd = state.position;
+
+      } else if (state.position === state.lineStart && testDocumentSeparator(state)) {
+        throwError(state, 'unexpected end of the document within a single quoted scalar');
+
+      } else {
+        state.position++;
+        captureEnd = state.position;
+      }
+    }
+
+    throwError(state, 'unexpected end of the stream within a single quoted scalar');
+  }
+
+  function readDoubleQuotedScalar(state, nodeIndent) {
+    var captureStart,
+        captureEnd,
+        hexLength,
+        hexResult,
+        tmp,
+        ch;
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (ch !== 0x22/* " */) {
+      return false;
+    }
+
+    state.kind = 'scalar';
+    state.result = '';
+    state.position++;
+    captureStart = captureEnd = state.position;
+
+    while ((ch = state.input.charCodeAt(state.position)) !== 0) {
+      if (ch === 0x22/* " */) {
+        captureSegment(state, captureStart, state.position, true);
+        state.position++;
+        return true;
+
+      } else if (ch === 0x5C/* \ */) {
+        captureSegment(state, captureStart, state.position, true);
+        ch = state.input.charCodeAt(++state.position);
+
+        if (is_EOL(ch)) {
+          skipSeparationSpace(state, false, nodeIndent);
+
+          // TODO: rework to inline fn with no type cast?
+        } else if (ch < 256 && simpleEscapeCheck[ch]) {
+          state.result += simpleEscapeMap[ch];
+          state.position++;
+
+        } else if ((tmp = escapedHexLen(ch)) > 0) {
+          hexLength = tmp;
+          hexResult = 0;
+
+          for (; hexLength > 0; hexLength--) {
+            ch = state.input.charCodeAt(++state.position);
+
+            if ((tmp = fromHexCode(ch)) >= 0) {
+              hexResult = (hexResult << 4) + tmp;
+
+            } else {
+              throwError(state, 'expected hexadecimal character');
+            }
+          }
+
+          state.result += charFromCodepoint(hexResult);
+
+          state.position++;
+
+        } else {
+          throwError(state, 'unknown escape sequence');
+        }
+
+        captureStart = captureEnd = state.position;
+
+      } else if (is_EOL(ch)) {
+        captureSegment(state, captureStart, captureEnd, true);
+        writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
+        captureStart = captureEnd = state.position;
+
+      } else if (state.position === state.lineStart && testDocumentSeparator(state)) {
+        throwError(state, 'unexpected end of the document within a double quoted scalar');
+
+      } else {
+        state.position++;
+        captureEnd = state.position;
+      }
+    }
+
+    throwError(state, 'unexpected end of the stream within a double quoted scalar');
+  }
+
+  function readFlowCollection(state, nodeIndent) {
+    var readNext = true,
+        _line,
+        _lineStart,
+        _pos,
+        _tag     = state.tag,
+        _result,
+        _anchor  = state.anchor,
+        following,
+        terminator,
+        isPair,
+        isExplicitPair,
+        isMapping,
+        overridableKeys = Object.create(null),
+        keyNode,
+        keyTag,
+        valueNode,
+        ch;
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (ch === 0x5B/* [ */) {
+      terminator = 0x5D;/* ] */
+      isMapping = false;
+      _result = [];
+    } else if (ch === 0x7B/* { */) {
+      terminator = 0x7D;/* } */
+      isMapping = true;
+      _result = {};
+    } else {
+      return false;
+    }
+
+    if (state.anchor !== null) {
+      state.anchorMap[state.anchor] = _result;
+    }
+
+    ch = state.input.charCodeAt(++state.position);
+
+    while (ch !== 0) {
+      skipSeparationSpace(state, true, nodeIndent);
+
+      ch = state.input.charCodeAt(state.position);
+
+      if (ch === terminator) {
+        state.position++;
+        state.tag = _tag;
+        state.anchor = _anchor;
+        state.kind = isMapping ? 'mapping' : 'sequence';
+        state.result = _result;
+        return true;
+      } else if (!readNext) {
+        throwError(state, 'missed comma between flow collection entries');
+      } else if (ch === 0x2C/* , */) {
+        // "flow collection entries can never be completely empty", as per YAML 1.2, section 7.4
+        throwError(state, "expected the node content, but found ','");
+      }
+
+      keyTag = keyNode = valueNode = null;
+      isPair = isExplicitPair = false;
+
+      if (ch === 0x3F/* ? */) {
+        following = state.input.charCodeAt(state.position + 1);
+
+        if (is_WS_OR_EOL(following)) {
+          isPair = isExplicitPair = true;
+          state.position++;
+          skipSeparationSpace(state, true, nodeIndent);
+        }
+      }
+
+      _line = state.line; // Save the current line.
+      _lineStart = state.lineStart;
+      _pos = state.position;
+      composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
+      keyTag = state.tag;
+      keyNode = state.result;
+      skipSeparationSpace(state, true, nodeIndent);
+
+      ch = state.input.charCodeAt(state.position);
+
+      if ((isExplicitPair || state.line === _line) && ch === 0x3A/* : */) {
+        isPair = true;
+        ch = state.input.charCodeAt(++state.position);
+        skipSeparationSpace(state, true, nodeIndent);
+        composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
+        valueNode = state.result;
+      }
+
+      if (isMapping) {
+        storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _line, _lineStart, _pos);
+      } else if (isPair) {
+        _result.push(storeMappingPair(state, null, overridableKeys, keyTag, keyNode, valueNode, _line, _lineStart, _pos));
+      } else {
+        _result.push(keyNode);
+      }
+
+      skipSeparationSpace(state, true, nodeIndent);
+
+      ch = state.input.charCodeAt(state.position);
+
+      if (ch === 0x2C/* , */) {
+        readNext = true;
+        ch = state.input.charCodeAt(++state.position);
+      } else {
+        readNext = false;
+      }
+    }
+
+    throwError(state, 'unexpected end of the stream within a flow collection');
+  }
+
+  function readBlockScalar(state, nodeIndent) {
+    var captureStart,
+        folding,
+        chomping       = CHOMPING_CLIP,
+        didReadContent = false,
+        detectedIndent = false,
+        textIndent     = nodeIndent,
+        emptyLines     = 0,
+        atMoreIndented = false,
+        tmp,
+        ch;
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (ch === 0x7C/* | */) {
+      folding = false;
+    } else if (ch === 0x3E/* > */) {
+      folding = true;
+    } else {
+      return false;
+    }
+
+    state.kind = 'scalar';
+    state.result = '';
+
+    while (ch !== 0) {
+      ch = state.input.charCodeAt(++state.position);
+
+      if (ch === 0x2B/* + */ || ch === 0x2D/* - */) {
+        if (CHOMPING_CLIP === chomping) {
+          chomping = (ch === 0x2B/* + */) ? CHOMPING_KEEP : CHOMPING_STRIP;
+        } else {
+          throwError(state, 'repeat of a chomping mode identifier');
+        }
+
+      } else if ((tmp = fromDecimalCode(ch)) >= 0) {
+        if (tmp === 0) {
+          throwError(state, 'bad explicit indentation width of a block scalar; it cannot be less than one');
+        } else if (!detectedIndent) {
+          textIndent = nodeIndent + tmp - 1;
+          detectedIndent = true;
+        } else {
+          throwError(state, 'repeat of an indentation width identifier');
+        }
+
+      } else {
+        break;
+      }
+    }
+
+    if (is_WHITE_SPACE(ch)) {
+      do { ch = state.input.charCodeAt(++state.position); }
+      while (is_WHITE_SPACE(ch));
+
+      if (ch === 0x23/* # */) {
+        do { ch = state.input.charCodeAt(++state.position); }
+        while (!is_EOL(ch) && (ch !== 0));
+      }
+    }
+
+    while (ch !== 0) {
+      readLineBreak(state);
+      state.lineIndent = 0;
+
+      ch = state.input.charCodeAt(state.position);
+
+      while ((!detectedIndent || state.lineIndent < textIndent) &&
+             (ch === 0x20/* Space */)) {
+        state.lineIndent++;
+        ch = state.input.charCodeAt(++state.position);
+      }
+
+      if (!detectedIndent && state.lineIndent > textIndent) {
+        textIndent = state.lineIndent;
+      }
+
+      if (is_EOL(ch)) {
+        emptyLines++;
+        continue;
+      }
+
+      // End of the scalar.
+      if (state.lineIndent < textIndent) {
+
+        // Perform the chomping.
+        if (chomping === CHOMPING_KEEP) {
+          state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
+        } else if (chomping === CHOMPING_CLIP) {
+          if (didReadContent) { // i.e. only if the scalar is not empty.
+            state.result += '\n';
+          }
+        }
+
+        // Break this `while` cycle and go to the funciton's epilogue.
+        break;
+      }
+
+      // Folded style: use fancy rules to handle line breaks.
+      if (folding) {
+
+        // Lines starting with white space characters (more-indented lines) are not folded.
+        if (is_WHITE_SPACE(ch)) {
+          atMoreIndented = true;
+          // except for the first content line (cf. Example 8.1)
+          state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
+
+        // End of more-indented block.
+        } else if (atMoreIndented) {
+          atMoreIndented = false;
+          state.result += common.repeat('\n', emptyLines + 1);
+
+        // Just one line break - perceive as the same line.
+        } else if (emptyLines === 0) {
+          if (didReadContent) { // i.e. only if we have already read some scalar content.
+            state.result += ' ';
+          }
+
+        // Several line breaks - perceive as different lines.
+        } else {
+          state.result += common.repeat('\n', emptyLines);
+        }
+
+      // Literal style: just add exact number of line breaks between content lines.
+      } else {
+        // Keep all line breaks except the header line break.
+        state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
+      }
+
+      didReadContent = true;
+      detectedIndent = true;
+      emptyLines = 0;
+      captureStart = state.position;
+
+      while (!is_EOL(ch) && (ch !== 0)) {
+        ch = state.input.charCodeAt(++state.position);
+      }
+
+      captureSegment(state, captureStart, state.position, false);
+    }
+
+    return true;
+  }
+
+  function readBlockSequence(state, nodeIndent) {
+    var _line,
+        _tag      = state.tag,
+        _anchor   = state.anchor,
+        _result   = [],
+        following,
+        detected  = false,
+        ch;
+
+    // there is a leading tab before this token, so it can't be a block sequence/mapping;
+    // it can still be flow sequence/mapping or a scalar
+    if (state.firstTabInLine !== -1) return false;
+
+    if (state.anchor !== null) {
+      state.anchorMap[state.anchor] = _result;
+    }
+
+    ch = state.input.charCodeAt(state.position);
+
+    while (ch !== 0) {
+      if (state.firstTabInLine !== -1) {
+        state.position = state.firstTabInLine;
+        throwError(state, 'tab characters must not be used in indentation');
+      }
+
+      if (ch !== 0x2D/* - */) {
+        break;
+      }
+
+      following = state.input.charCodeAt(state.position + 1);
+
+      if (!is_WS_OR_EOL(following)) {
+        break;
+      }
+
+      detected = true;
+      state.position++;
+
+      if (skipSeparationSpace(state, true, -1)) {
+        if (state.lineIndent <= nodeIndent) {
+          _result.push(null);
+          ch = state.input.charCodeAt(state.position);
+          continue;
+        }
+      }
+
+      _line = state.line;
+      composeNode(state, nodeIndent, CONTEXT_BLOCK_IN, false, true);
+      _result.push(state.result);
+      skipSeparationSpace(state, true, -1);
+
+      ch = state.input.charCodeAt(state.position);
+
+      if ((state.line === _line || state.lineIndent > nodeIndent) && (ch !== 0)) {
+        throwError(state, 'bad indentation of a sequence entry');
+      } else if (state.lineIndent < nodeIndent) {
+        break;
+      }
+    }
+
+    if (detected) {
+      state.tag = _tag;
+      state.anchor = _anchor;
+      state.kind = 'sequence';
+      state.result = _result;
+      return true;
+    }
+    return false;
+  }
+
+  function readBlockMapping(state, nodeIndent, flowIndent) {
+    var following,
+        allowCompact,
+        _line,
+        _keyLine,
+        _keyLineStart,
+        _keyPos,
+        _tag          = state.tag,
+        _anchor       = state.anchor,
+        _result       = {},
+        overridableKeys = Object.create(null),
+        keyTag        = null,
+        keyNode       = null,
+        valueNode     = null,
+        atExplicitKey = false,
+        detected      = false,
+        ch;
+
+    // there is a leading tab before this token, so it can't be a block sequence/mapping;
+    // it can still be flow sequence/mapping or a scalar
+    if (state.firstTabInLine !== -1) return false;
+
+    if (state.anchor !== null) {
+      state.anchorMap[state.anchor] = _result;
+    }
+
+    ch = state.input.charCodeAt(state.position);
+
+    while (ch !== 0) {
+      if (!atExplicitKey && state.firstTabInLine !== -1) {
+        state.position = state.firstTabInLine;
+        throwError(state, 'tab characters must not be used in indentation');
+      }
+
+      following = state.input.charCodeAt(state.position + 1);
+      _line = state.line; // Save the current line.
+
+      //
+      // Explicit notation case. There are two separate blocks:
+      // first for the key (denoted by "?") and second for the value (denoted by ":")
+      //
+      if ((ch === 0x3F/* ? */ || ch === 0x3A/* : */) && is_WS_OR_EOL(following)) {
+
+        if (ch === 0x3F/* ? */) {
+          if (atExplicitKey) {
+            storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
+            keyTag = keyNode = valueNode = null;
+          }
+
+          detected = true;
+          atExplicitKey = true;
+          allowCompact = true;
+
+        } else if (atExplicitKey) {
+          // i.e. 0x3A/* : */ === character after the explicit key.
+          atExplicitKey = false;
+          allowCompact = true;
+
+        } else {
+          throwError(state, 'incomplete explicit mapping pair; a key node is missed; or followed by a non-tabulated empty line');
+        }
+
+        state.position += 1;
+        ch = following;
+
+      //
+      // Implicit notation case. Flow-style node as the key first, then ":", and the value.
+      //
+      } else {
+        _keyLine = state.line;
+        _keyLineStart = state.lineStart;
+        _keyPos = state.position;
+
+        if (!composeNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true)) {
+          // Neither implicit nor explicit notation.
+          // Reading is done. Go to the epilogue.
+          break;
+        }
+
+        if (state.line === _line) {
+          ch = state.input.charCodeAt(state.position);
+
+          while (is_WHITE_SPACE(ch)) {
+            ch = state.input.charCodeAt(++state.position);
+          }
+
+          if (ch === 0x3A/* : */) {
+            ch = state.input.charCodeAt(++state.position);
+
+            if (!is_WS_OR_EOL(ch)) {
+              throwError(state, 'a whitespace character is expected after the key-value separator within a block mapping');
+            }
+
+            if (atExplicitKey) {
+              storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
+              keyTag = keyNode = valueNode = null;
+            }
+
+            detected = true;
+            atExplicitKey = false;
+            allowCompact = false;
+            keyTag = state.tag;
+            keyNode = state.result;
+
+          } else if (detected) {
+            throwError(state, 'can not read an implicit mapping pair; a colon is missed');
+
+          } else {
+            state.tag = _tag;
+            state.anchor = _anchor;
+            return true; // Keep the result of `composeNode`.
+          }
+
+        } else if (detected) {
+          throwError(state, 'can not read a block mapping entry; a multiline key may not be an implicit key');
+
+        } else {
+          state.tag = _tag;
+          state.anchor = _anchor;
+          return true; // Keep the result of `composeNode`.
+        }
+      }
+
+      //
+      // Common reading code for both explicit and implicit notations.
+      //
+      if (state.line === _line || state.lineIndent > nodeIndent) {
+        if (atExplicitKey) {
+          _keyLine = state.line;
+          _keyLineStart = state.lineStart;
+          _keyPos = state.position;
+        }
+
+        if (composeNode(state, nodeIndent, CONTEXT_BLOCK_OUT, true, allowCompact)) {
+          if (atExplicitKey) {
+            keyNode = state.result;
+          } else {
+            valueNode = state.result;
+          }
+        }
+
+        if (!atExplicitKey) {
+          storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _keyLine, _keyLineStart, _keyPos);
+          keyTag = keyNode = valueNode = null;
+        }
+
+        skipSeparationSpace(state, true, -1);
+        ch = state.input.charCodeAt(state.position);
+      }
+
+      if ((state.line === _line || state.lineIndent > nodeIndent) && (ch !== 0)) {
+        throwError(state, 'bad indentation of a mapping entry');
+      } else if (state.lineIndent < nodeIndent) {
+        break;
+      }
+    }
+
+    //
+    // Epilogue.
+    //
+
+    // Special case: last mapping's node contains only the key in explicit notation.
+    if (atExplicitKey) {
+      storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
+    }
+
+    // Expose the resulting mapping.
+    if (detected) {
+      state.tag = _tag;
+      state.anchor = _anchor;
+      state.kind = 'mapping';
+      state.result = _result;
+    }
+
+    return detected;
+  }
+
+  function readTagProperty(state) {
+    var _position,
+        isVerbatim = false,
+        isNamed    = false,
+        tagHandle,
+        tagName,
+        ch;
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (ch !== 0x21/* ! */) return false;
+
+    if (state.tag !== null) {
+      throwError(state, 'duplication of a tag property');
+    }
+
+    ch = state.input.charCodeAt(++state.position);
+
+    if (ch === 0x3C/* < */) {
+      isVerbatim = true;
+      ch = state.input.charCodeAt(++state.position);
+
+    } else if (ch === 0x21/* ! */) {
+      isNamed = true;
+      tagHandle = '!!';
+      ch = state.input.charCodeAt(++state.position);
+
+    } else {
+      tagHandle = '!';
+    }
+
+    _position = state.position;
+
+    if (isVerbatim) {
+      do { ch = state.input.charCodeAt(++state.position); }
+      while (ch !== 0 && ch !== 0x3E/* > */);
+
+      if (state.position < state.length) {
+        tagName = state.input.slice(_position, state.position);
+        ch = state.input.charCodeAt(++state.position);
+      } else {
+        throwError(state, 'unexpected end of the stream within a verbatim tag');
+      }
+    } else {
+      while (ch !== 0 && !is_WS_OR_EOL(ch)) {
+
+        if (ch === 0x21/* ! */) {
+          if (!isNamed) {
+            tagHandle = state.input.slice(_position - 1, state.position + 1);
+
+            if (!PATTERN_TAG_HANDLE.test(tagHandle)) {
+              throwError(state, 'named tag handle cannot contain such characters');
+            }
+
+            isNamed = true;
+            _position = state.position + 1;
+          } else {
+            throwError(state, 'tag suffix cannot contain exclamation marks');
+          }
+        }
+
+        ch = state.input.charCodeAt(++state.position);
+      }
+
+      tagName = state.input.slice(_position, state.position);
+
+      if (PATTERN_FLOW_INDICATORS.test(tagName)) {
+        throwError(state, 'tag suffix cannot contain flow indicator characters');
+      }
+    }
+
+    if (tagName && !PATTERN_TAG_URI.test(tagName)) {
+      throwError(state, 'tag name cannot contain such characters: ' + tagName);
+    }
+
+    try {
+      tagName = decodeURIComponent(tagName);
+    } catch (err) {
+      throwError(state, 'tag name is malformed: ' + tagName);
+    }
+
+    if (isVerbatim) {
+      state.tag = tagName;
+
+    } else if (_hasOwnProperty$1.call(state.tagMap, tagHandle)) {
+      state.tag = state.tagMap[tagHandle] + tagName;
+
+    } else if (tagHandle === '!') {
+      state.tag = '!' + tagName;
+
+    } else if (tagHandle === '!!') {
+      state.tag = 'tag:yaml.org,2002:' + tagName;
+
+    } else {
+      throwError(state, 'undeclared tag handle "' + tagHandle + '"');
+    }
+
+    return true;
+  }
+
+  function readAnchorProperty(state) {
+    var _position,
+        ch;
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (ch !== 0x26/* & */) return false;
+
+    if (state.anchor !== null) {
+      throwError(state, 'duplication of an anchor property');
+    }
+
+    ch = state.input.charCodeAt(++state.position);
+    _position = state.position;
+
+    while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    if (state.position === _position) {
+      throwError(state, 'name of an anchor node must contain at least one character');
+    }
+
+    state.anchor = state.input.slice(_position, state.position);
+    return true;
+  }
+
+  function readAlias(state) {
+    var _position, alias,
+        ch;
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (ch !== 0x2A/* * */) return false;
+
+    ch = state.input.charCodeAt(++state.position);
+    _position = state.position;
+
+    while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    if (state.position === _position) {
+      throwError(state, 'name of an alias node must contain at least one character');
+    }
+
+    alias = state.input.slice(_position, state.position);
+
+    if (!_hasOwnProperty$1.call(state.anchorMap, alias)) {
+      throwError(state, 'unidentified alias "' + alias + '"');
+    }
+
+    state.result = state.anchorMap[alias];
+    skipSeparationSpace(state, true, -1);
+    return true;
+  }
+
+  function composeNode(state, parentIndent, nodeContext, allowToSeek, allowCompact) {
+    var allowBlockStyles,
+        allowBlockScalars,
+        allowBlockCollections,
+        indentStatus = 1, // 1: this>parent, 0: this=parent, -1: this<parent
+        atNewLine  = false,
+        hasContent = false,
+        typeIndex,
+        typeQuantity,
+        typeList,
+        type,
+        flowIndent,
+        blockIndent;
+
+    if (state.listener !== null) {
+      state.listener('open', state);
+    }
+
+    state.tag    = null;
+    state.anchor = null;
+    state.kind   = null;
+    state.result = null;
+
+    allowBlockStyles = allowBlockScalars = allowBlockCollections =
+      CONTEXT_BLOCK_OUT === nodeContext ||
+      CONTEXT_BLOCK_IN  === nodeContext;
+
+    if (allowToSeek) {
+      if (skipSeparationSpace(state, true, -1)) {
+        atNewLine = true;
+
+        if (state.lineIndent > parentIndent) {
+          indentStatus = 1;
+        } else if (state.lineIndent === parentIndent) {
+          indentStatus = 0;
+        } else if (state.lineIndent < parentIndent) {
+          indentStatus = -1;
+        }
+      }
+    }
+
+    if (indentStatus === 1) {
+      while (readTagProperty(state) || readAnchorProperty(state)) {
+        if (skipSeparationSpace(state, true, -1)) {
+          atNewLine = true;
+          allowBlockCollections = allowBlockStyles;
+
+          if (state.lineIndent > parentIndent) {
+            indentStatus = 1;
+          } else if (state.lineIndent === parentIndent) {
+            indentStatus = 0;
+          } else if (state.lineIndent < parentIndent) {
+            indentStatus = -1;
+          }
+        } else {
+          allowBlockCollections = false;
+        }
+      }
+    }
+
+    if (allowBlockCollections) {
+      allowBlockCollections = atNewLine || allowCompact;
+    }
+
+    if (indentStatus === 1 || CONTEXT_BLOCK_OUT === nodeContext) {
+      if (CONTEXT_FLOW_IN === nodeContext || CONTEXT_FLOW_OUT === nodeContext) {
+        flowIndent = parentIndent;
+      } else {
+        flowIndent = parentIndent + 1;
+      }
+
+      blockIndent = state.position - state.lineStart;
+
+      if (indentStatus === 1) {
+        if (allowBlockCollections &&
+            (readBlockSequence(state, blockIndent) ||
+             readBlockMapping(state, blockIndent, flowIndent)) ||
+            readFlowCollection(state, flowIndent)) {
+          hasContent = true;
+        } else {
+          if ((allowBlockScalars && readBlockScalar(state, flowIndent)) ||
+              readSingleQuotedScalar(state, flowIndent) ||
+              readDoubleQuotedScalar(state, flowIndent)) {
+            hasContent = true;
+
+          } else if (readAlias(state)) {
+            hasContent = true;
+
+            if (state.tag !== null || state.anchor !== null) {
+              throwError(state, 'alias node should not have any properties');
+            }
+
+          } else if (readPlainScalar(state, flowIndent, CONTEXT_FLOW_IN === nodeContext)) {
+            hasContent = true;
+
+            if (state.tag === null) {
+              state.tag = '?';
+            }
+          }
+
+          if (state.anchor !== null) {
+            state.anchorMap[state.anchor] = state.result;
+          }
+        }
+      } else if (indentStatus === 0) {
+        // Special case: block sequences are allowed to have same indentation level as the parent.
+        // http://www.yaml.org/spec/1.2/spec.html#id2799784
+        hasContent = allowBlockCollections && readBlockSequence(state, blockIndent);
+      }
+    }
+
+    if (state.tag === null) {
+      if (state.anchor !== null) {
+        state.anchorMap[state.anchor] = state.result;
+      }
+
+    } else if (state.tag === '?') {
+      // Implicit resolving is not allowed for non-scalar types, and '?'
+      // non-specific tag is only automatically assigned to plain scalars.
+      //
+      // We only need to check kind conformity in case user explicitly assigns '?'
+      // tag, for example like this: "!<?> [0]"
+      //
+      if (state.result !== null && state.kind !== 'scalar') {
+        throwError(state, 'unacceptable node kind for !<?> tag; it should be "scalar", not "' + state.kind + '"');
+      }
+
+      for (typeIndex = 0, typeQuantity = state.implicitTypes.length; typeIndex < typeQuantity; typeIndex += 1) {
+        type = state.implicitTypes[typeIndex];
+
+        if (type.resolve(state.result)) { // `state.result` updated in resolver if matched
+          state.result = type.construct(state.result);
+          state.tag = type.tag;
+          if (state.anchor !== null) {
+            state.anchorMap[state.anchor] = state.result;
+          }
+          break;
+        }
+      }
+    } else if (state.tag !== '!') {
+      if (_hasOwnProperty$1.call(state.typeMap[state.kind || 'fallback'], state.tag)) {
+        type = state.typeMap[state.kind || 'fallback'][state.tag];
+      } else {
+        // looking for multi type
+        type = null;
+        typeList = state.typeMap.multi[state.kind || 'fallback'];
+
+        for (typeIndex = 0, typeQuantity = typeList.length; typeIndex < typeQuantity; typeIndex += 1) {
+          if (state.tag.slice(0, typeList[typeIndex].tag.length) === typeList[typeIndex].tag) {
+            type = typeList[typeIndex];
+            break;
+          }
+        }
+      }
+
+      if (!type) {
+        throwError(state, 'unknown tag !<' + state.tag + '>');
+      }
+
+      if (state.result !== null && type.kind !== state.kind) {
+        throwError(state, 'unacceptable node kind for !<' + state.tag + '> tag; it should be "' + type.kind + '", not "' + state.kind + '"');
+      }
+
+      if (!type.resolve(state.result, state.tag)) { // `state.result` updated in resolver if matched
+        throwError(state, 'cannot resolve a node with !<' + state.tag + '> explicit tag');
+      } else {
+        state.result = type.construct(state.result, state.tag);
+        if (state.anchor !== null) {
+          state.anchorMap[state.anchor] = state.result;
+        }
+      }
+    }
+
+    if (state.listener !== null) {
+      state.listener('close', state);
+    }
+    return state.tag !== null ||  state.anchor !== null || hasContent;
+  }
+
+  function readDocument(state) {
+    var documentStart = state.position,
+        _position,
+        directiveName,
+        directiveArgs,
+        hasDirectives = false,
+        ch;
+
+    state.version = null;
+    state.checkLineBreaks = state.legacy;
+    state.tagMap = Object.create(null);
+    state.anchorMap = Object.create(null);
+
+    while ((ch = state.input.charCodeAt(state.position)) !== 0) {
+      skipSeparationSpace(state, true, -1);
+
+      ch = state.input.charCodeAt(state.position);
+
+      if (state.lineIndent > 0 || ch !== 0x25/* % */) {
+        break;
+      }
+
+      hasDirectives = true;
+      ch = state.input.charCodeAt(++state.position);
+      _position = state.position;
+
+      while (ch !== 0 && !is_WS_OR_EOL(ch)) {
+        ch = state.input.charCodeAt(++state.position);
+      }
+
+      directiveName = state.input.slice(_position, state.position);
+      directiveArgs = [];
+
+      if (directiveName.length < 1) {
+        throwError(state, 'directive name must not be less than one character in length');
+      }
+
+      while (ch !== 0) {
+        while (is_WHITE_SPACE(ch)) {
+          ch = state.input.charCodeAt(++state.position);
+        }
+
+        if (ch === 0x23/* # */) {
+          do { ch = state.input.charCodeAt(++state.position); }
+          while (ch !== 0 && !is_EOL(ch));
+          break;
+        }
+
+        if (is_EOL(ch)) break;
+
+        _position = state.position;
+
+        while (ch !== 0 && !is_WS_OR_EOL(ch)) {
+          ch = state.input.charCodeAt(++state.position);
+        }
+
+        directiveArgs.push(state.input.slice(_position, state.position));
+      }
+
+      if (ch !== 0) readLineBreak(state);
+
+      if (_hasOwnProperty$1.call(directiveHandlers, directiveName)) {
+        directiveHandlers[directiveName](state, directiveName, directiveArgs);
+      } else {
+        throwWarning(state, 'unknown document directive "' + directiveName + '"');
+      }
+    }
+
+    skipSeparationSpace(state, true, -1);
+
+    if (state.lineIndent === 0 &&
+        state.input.charCodeAt(state.position)     === 0x2D/* - */ &&
+        state.input.charCodeAt(state.position + 1) === 0x2D/* - */ &&
+        state.input.charCodeAt(state.position + 2) === 0x2D/* - */) {
+      state.position += 3;
+      skipSeparationSpace(state, true, -1);
+
+    } else if (hasDirectives) {
+      throwError(state, 'directives end mark is expected');
+    }
+
+    composeNode(state, state.lineIndent - 1, CONTEXT_BLOCK_OUT, false, true);
+    skipSeparationSpace(state, true, -1);
+
+    if (state.checkLineBreaks &&
+        PATTERN_NON_ASCII_LINE_BREAKS.test(state.input.slice(documentStart, state.position))) {
+      throwWarning(state, 'non-ASCII line breaks are interpreted as content');
+    }
+
+    state.documents.push(state.result);
+
+    if (state.position === state.lineStart && testDocumentSeparator(state)) {
+
+      if (state.input.charCodeAt(state.position) === 0x2E/* . */) {
+        state.position += 3;
+        skipSeparationSpace(state, true, -1);
+      }
+      return;
+    }
+
+    if (state.position < (state.length - 1)) {
+      throwError(state, 'end of the stream or a document separator is expected');
+    } else {
+      return;
+    }
+  }
+
+
+  function loadDocuments(input, options) {
+    input = String(input);
+    options = options || {};
+
+    if (input.length !== 0) {
+
+      // Add tailing `\n` if not exists
+      if (input.charCodeAt(input.length - 1) !== 0x0A/* LF */ &&
+          input.charCodeAt(input.length - 1) !== 0x0D/* CR */) {
+        input += '\n';
+      }
+
+      // Strip BOM
+      if (input.charCodeAt(0) === 0xFEFF) {
+        input = input.slice(1);
+      }
+    }
+
+    var state = new State$1(input, options);
+
+    var nullpos = input.indexOf('\0');
+
+    if (nullpos !== -1) {
+      state.position = nullpos;
+      throwError(state, 'null byte is not allowed in input');
+    }
+
+    // Use 0 as string terminator. That significantly simplifies bounds check.
+    state.input += '\0';
+
+    while (state.input.charCodeAt(state.position) === 0x20/* Space */) {
+      state.lineIndent += 1;
+      state.position += 1;
+    }
+
+    while (state.position < (state.length - 1)) {
+      readDocument(state);
+    }
+
+    return state.documents;
+  }
+
+
+  function loadAll$1(input, iterator, options) {
+    if (iterator !== null && typeof iterator === 'object' && typeof options === 'undefined') {
+      options = iterator;
+      iterator = null;
+    }
+
+    var documents = loadDocuments(input, options);
+
+    if (typeof iterator !== 'function') {
+      return documents;
+    }
+
+    for (var index = 0, length = documents.length; index < length; index += 1) {
+      iterator(documents[index]);
+    }
+  }
+
+
+  function load$1(input, options) {
+    var documents = loadDocuments(input, options);
+
+    if (documents.length === 0) {
+      /*eslint-disable no-undefined*/
+      return undefined;
+    } else if (documents.length === 1) {
+      return documents[0];
+    }
+    throw new exception('expected a single document in the stream, but found more');
+  }
+
+
+  var loadAll_1 = loadAll$1;
+  var load_1    = load$1;
+
+  var loader = {
+  	loadAll: loadAll_1,
+  	load: load_1
+  };
+
+  /*eslint-disable no-use-before-define*/
+
+
+
+
+
+  var _toString       = Object.prototype.toString;
+  var _hasOwnProperty = Object.prototype.hasOwnProperty;
+
+  var CHAR_BOM                  = 0xFEFF;
+  var CHAR_TAB                  = 0x09; /* Tab */
+  var CHAR_LINE_FEED            = 0x0A; /* LF */
+  var CHAR_CARRIAGE_RETURN      = 0x0D; /* CR */
+  var CHAR_SPACE                = 0x20; /* Space */
+  var CHAR_EXCLAMATION          = 0x21; /* ! */
+  var CHAR_DOUBLE_QUOTE         = 0x22; /* " */
+  var CHAR_SHARP                = 0x23; /* # */
+  var CHAR_PERCENT              = 0x25; /* % */
+  var CHAR_AMPERSAND            = 0x26; /* & */
+  var CHAR_SINGLE_QUOTE         = 0x27; /* ' */
+  var CHAR_ASTERISK             = 0x2A; /* * */
+  var CHAR_COMMA                = 0x2C; /* , */
+  var CHAR_MINUS                = 0x2D; /* - */
+  var CHAR_COLON                = 0x3A; /* : */
+  var CHAR_EQUALS               = 0x3D; /* = */
+  var CHAR_GREATER_THAN         = 0x3E; /* > */
+  var CHAR_QUESTION             = 0x3F; /* ? */
+  var CHAR_COMMERCIAL_AT        = 0x40; /* @ */
+  var CHAR_LEFT_SQUARE_BRACKET  = 0x5B; /* [ */
+  var CHAR_RIGHT_SQUARE_BRACKET = 0x5D; /* ] */
+  var CHAR_GRAVE_ACCENT         = 0x60; /* ` */
+  var CHAR_LEFT_CURLY_BRACKET   = 0x7B; /* { */
+  var CHAR_VERTICAL_LINE        = 0x7C; /* | */
+  var CHAR_RIGHT_CURLY_BRACKET  = 0x7D; /* } */
+
+  var ESCAPE_SEQUENCES = {};
+
+  ESCAPE_SEQUENCES[0x00]   = '\\0';
+  ESCAPE_SEQUENCES[0x07]   = '\\a';
+  ESCAPE_SEQUENCES[0x08]   = '\\b';
+  ESCAPE_SEQUENCES[0x09]   = '\\t';
+  ESCAPE_SEQUENCES[0x0A]   = '\\n';
+  ESCAPE_SEQUENCES[0x0B]   = '\\v';
+  ESCAPE_SEQUENCES[0x0C]   = '\\f';
+  ESCAPE_SEQUENCES[0x0D]   = '\\r';
+  ESCAPE_SEQUENCES[0x1B]   = '\\e';
+  ESCAPE_SEQUENCES[0x22]   = '\\"';
+  ESCAPE_SEQUENCES[0x5C]   = '\\\\';
+  ESCAPE_SEQUENCES[0x85]   = '\\N';
+  ESCAPE_SEQUENCES[0xA0]   = '\\_';
+  ESCAPE_SEQUENCES[0x2028] = '\\L';
+  ESCAPE_SEQUENCES[0x2029] = '\\P';
+
+  var DEPRECATED_BOOLEANS_SYNTAX = [
+    'y', 'Y', 'yes', 'Yes', 'YES', 'on', 'On', 'ON',
+    'n', 'N', 'no', 'No', 'NO', 'off', 'Off', 'OFF'
+  ];
+
+  var DEPRECATED_BASE60_SYNTAX = /^[-+]?[0-9_]+(?::[0-9_]+)+(?:\.[0-9_]*)?$/;
+
+  function compileStyleMap(schema, map) {
+    var result, keys, index, length, tag, style, type;
+
+    if (map === null) return {};
+
+    result = {};
+    keys = Object.keys(map);
+
+    for (index = 0, length = keys.length; index < length; index += 1) {
+      tag = keys[index];
+      style = String(map[tag]);
+
+      if (tag.slice(0, 2) === '!!') {
+        tag = 'tag:yaml.org,2002:' + tag.slice(2);
+      }
+      type = schema.compiledTypeMap['fallback'][tag];
+
+      if (type && _hasOwnProperty.call(type.styleAliases, style)) {
+        style = type.styleAliases[style];
+      }
+
+      result[tag] = style;
+    }
+
+    return result;
+  }
+
+  function encodeHex(character) {
+    var string, handle, length;
+
+    string = character.toString(16).toUpperCase();
+
+    if (character <= 0xFF) {
+      handle = 'x';
+      length = 2;
+    } else if (character <= 0xFFFF) {
+      handle = 'u';
+      length = 4;
+    } else if (character <= 0xFFFFFFFF) {
+      handle = 'U';
+      length = 8;
+    } else {
+      throw new exception('code point within a string may not be greater than 0xFFFFFFFF');
+    }
+
+    return '\\' + handle + common.repeat('0', length - string.length) + string;
+  }
+
+
+  var QUOTING_TYPE_SINGLE = 1,
+      QUOTING_TYPE_DOUBLE = 2;
+
+  function State(options) {
+    this.schema        = options['schema'] || _default;
+    this.indent        = Math.max(1, (options['indent'] || 2));
+    this.noArrayIndent = options['noArrayIndent'] || false;
+    this.skipInvalid   = options['skipInvalid'] || false;
+    this.flowLevel     = (common.isNothing(options['flowLevel']) ? -1 : options['flowLevel']);
+    this.styleMap      = compileStyleMap(this.schema, options['styles'] || null);
+    this.sortKeys      = options['sortKeys'] || false;
+    this.lineWidth     = options['lineWidth'] || 80;
+    this.noRefs        = options['noRefs'] || false;
+    this.noCompatMode  = options['noCompatMode'] || false;
+    this.condenseFlow  = options['condenseFlow'] || false;
+    this.quotingType   = options['quotingType'] === '"' ? QUOTING_TYPE_DOUBLE : QUOTING_TYPE_SINGLE;
+    this.forceQuotes   = options['forceQuotes'] || false;
+    this.replacer      = typeof options['replacer'] === 'function' ? options['replacer'] : null;
+
+    this.implicitTypes = this.schema.compiledImplicit;
+    this.explicitTypes = this.schema.compiledExplicit;
+
+    this.tag = null;
+    this.result = '';
+
+    this.duplicates = [];
+    this.usedDuplicates = null;
+  }
+
+  // Indents every line in a string. Empty lines (\n only) are not indented.
+  function indentString(string, spaces) {
+    var ind = common.repeat(' ', spaces),
+        position = 0,
+        next = -1,
+        result = '',
+        line,
+        length = string.length;
+
+    while (position < length) {
+      next = string.indexOf('\n', position);
+      if (next === -1) {
+        line = string.slice(position);
+        position = length;
+      } else {
+        line = string.slice(position, next + 1);
+        position = next + 1;
+      }
+
+      if (line.length && line !== '\n') result += ind;
+
+      result += line;
+    }
+
+    return result;
+  }
+
+  function generateNextLine(state, level) {
+    return '\n' + common.repeat(' ', state.indent * level);
+  }
+
+  function testImplicitResolving(state, str) {
+    var index, length, type;
+
+    for (index = 0, length = state.implicitTypes.length; index < length; index += 1) {
+      type = state.implicitTypes[index];
+
+      if (type.resolve(str)) {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  // [33] s-white ::= s-space | s-tab
+  function isWhitespace(c) {
+    return c === CHAR_SPACE || c === CHAR_TAB;
+  }
+
+  // Returns true if the character can be printed without escaping.
+  // From YAML 1.2: "any allowed characters known to be non-printable
+  // should also be escaped. [However,] This isn’t mandatory"
+  // Derived from nb-char - \t - #x85 - #xA0 - #x2028 - #x2029.
+  function isPrintable(c) {
+    return  (0x00020 <= c && c <= 0x00007E)
+        || ((0x000A1 <= c && c <= 0x00D7FF) && c !== 0x2028 && c !== 0x2029)
+        || ((0x0E000 <= c && c <= 0x00FFFD) && c !== CHAR_BOM)
+        ||  (0x10000 <= c && c <= 0x10FFFF);
+  }
+
+  // [34] ns-char ::= nb-char - s-white
+  // [27] nb-char ::= c-printable - b-char - c-byte-order-mark
+  // [26] b-char  ::= b-line-feed | b-carriage-return
+  // Including s-white (for some reason, examples doesn't match specs in this aspect)
+  // ns-char ::= c-printable - b-line-feed - b-carriage-return - c-byte-order-mark
+  function isNsCharOrWhitespace(c) {
+    return isPrintable(c)
+      && c !== CHAR_BOM
+      // - b-char
+      && c !== CHAR_CARRIAGE_RETURN
+      && c !== CHAR_LINE_FEED;
+  }
+
+  // [127]  ns-plain-safe(c) ::= c = flow-out  ⇒ ns-plain-safe-out
+  //                             c = flow-in   ⇒ ns-plain-safe-in
+  //                             c = block-key ⇒ ns-plain-safe-out
+  //                             c = flow-key  ⇒ ns-plain-safe-in
+  // [128] ns-plain-safe-out ::= ns-char
+  // [129]  ns-plain-safe-in ::= ns-char - c-flow-indicator
+  // [130]  ns-plain-char(c) ::=  ( ns-plain-safe(c) - “:” - “#” )
+  //                            | ( /* An ns-char preceding */ “#” )
+  //                            | ( “:” /* Followed by an ns-plain-safe(c) */ )
+  function isPlainSafe(c, prev, inblock) {
+    var cIsNsCharOrWhitespace = isNsCharOrWhitespace(c);
+    var cIsNsChar = cIsNsCharOrWhitespace && !isWhitespace(c);
+    return (
+      // ns-plain-safe
+      inblock ? // c = flow-in
+        cIsNsCharOrWhitespace
+        : cIsNsCharOrWhitespace
+          // - c-flow-indicator
+          && c !== CHAR_COMMA
+          && c !== CHAR_LEFT_SQUARE_BRACKET
+          && c !== CHAR_RIGHT_SQUARE_BRACKET
+          && c !== CHAR_LEFT_CURLY_BRACKET
+          && c !== CHAR_RIGHT_CURLY_BRACKET
+    )
+      // ns-plain-char
+      && c !== CHAR_SHARP // false on '#'
+      && !(prev === CHAR_COLON && !cIsNsChar) // false on ': '
+      || (isNsCharOrWhitespace(prev) && !isWhitespace(prev) && c === CHAR_SHARP) // change to true on '[^ ]#'
+      || (prev === CHAR_COLON && cIsNsChar); // change to true on ':[^ ]'
+  }
+
+  // Simplified test for values allowed as the first character in plain style.
+  function isPlainSafeFirst(c) {
+    // Uses a subset of ns-char - c-indicator
+    // where ns-char = nb-char - s-white.
+    // No support of ( ( “?” | “:” | “-” ) /* Followed by an ns-plain-safe(c)) */ ) part
+    return isPrintable(c) && c !== CHAR_BOM
+      && !isWhitespace(c) // - s-white
+      // - (c-indicator ::=
+      // “-” | “?” | “:” | “,” | “[” | “]” | “{” | “}”
+      && c !== CHAR_MINUS
+      && c !== CHAR_QUESTION
+      && c !== CHAR_COLON
+      && c !== CHAR_COMMA
+      && c !== CHAR_LEFT_SQUARE_BRACKET
+      && c !== CHAR_RIGHT_SQUARE_BRACKET
+      && c !== CHAR_LEFT_CURLY_BRACKET
+      && c !== CHAR_RIGHT_CURLY_BRACKET
+      // | “#” | “&” | “*” | “!” | “|” | “=” | “>” | “'” | “"”
+      && c !== CHAR_SHARP
+      && c !== CHAR_AMPERSAND
+      && c !== CHAR_ASTERISK
+      && c !== CHAR_EXCLAMATION
+      && c !== CHAR_VERTICAL_LINE
+      && c !== CHAR_EQUALS
+      && c !== CHAR_GREATER_THAN
+      && c !== CHAR_SINGLE_QUOTE
+      && c !== CHAR_DOUBLE_QUOTE
+      // | “%” | “@” | “`”)
+      && c !== CHAR_PERCENT
+      && c !== CHAR_COMMERCIAL_AT
+      && c !== CHAR_GRAVE_ACCENT;
+  }
+
+  // Simplified test for values allowed as the last character in plain style.
+  function isPlainSafeLast(c) {
+    // just not whitespace or colon, it will be checked to be plain character later
+    return !isWhitespace(c) && c !== CHAR_COLON;
+  }
+
+  // Same as 'string'.codePointAt(pos), but works in older browsers.
+  function codePointAt(string, pos) {
+    var first = string.charCodeAt(pos), second;
+    if (first >= 0xD800 && first <= 0xDBFF && pos + 1 < string.length) {
+      second = string.charCodeAt(pos + 1);
+      if (second >= 0xDC00 && second <= 0xDFFF) {
+        // https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
+        return (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
+      }
+    }
+    return first;
+  }
+
+  // Determines whether block indentation indicator is required.
+  function needIndentIndicator(string) {
+    var leadingSpaceRe = /^\n* /;
+    return leadingSpaceRe.test(string);
+  }
+
+  var STYLE_PLAIN   = 1,
+      STYLE_SINGLE  = 2,
+      STYLE_LITERAL = 3,
+      STYLE_FOLDED  = 4,
+      STYLE_DOUBLE  = 5;
+
+  // Determines which scalar styles are possible and returns the preferred style.
+  // lineWidth = -1 => no limit.
+  // Pre-conditions: str.length > 0.
+  // Post-conditions:
+  //    STYLE_PLAIN or STYLE_SINGLE => no \n are in the string.
+  //    STYLE_LITERAL => no lines are suitable for folding (or lineWidth is -1).
+  //    STYLE_FOLDED => a line > lineWidth and can be folded (and lineWidth != -1).
+  function chooseScalarStyle(string, singleLineOnly, indentPerLevel, lineWidth,
+    testAmbiguousType, quotingType, forceQuotes, inblock) {
+
+    var i;
+    var char = 0;
+    var prevChar = null;
+    var hasLineBreak = false;
+    var hasFoldableLine = false; // only checked if shouldTrackWidth
+    var shouldTrackWidth = lineWidth !== -1;
+    var previousLineBreak = -1; // count the first line correctly
+    var plain = isPlainSafeFirst(codePointAt(string, 0))
+            && isPlainSafeLast(codePointAt(string, string.length - 1));
+
+    if (singleLineOnly || forceQuotes) {
+      // Case: no block styles.
+      // Check for disallowed characters to rule out plain and single.
+      for (i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
+        char = codePointAt(string, i);
+        if (!isPrintable(char)) {
+          return STYLE_DOUBLE;
+        }
+        plain = plain && isPlainSafe(char, prevChar, inblock);
+        prevChar = char;
+      }
+    } else {
+      // Case: block styles permitted.
+      for (i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
+        char = codePointAt(string, i);
+        if (char === CHAR_LINE_FEED) {
+          hasLineBreak = true;
+          // Check if any line can be folded.
+          if (shouldTrackWidth) {
+            hasFoldableLine = hasFoldableLine ||
+              // Foldable line = too long, and not more-indented.
+              (i - previousLineBreak - 1 > lineWidth &&
+               string[previousLineBreak + 1] !== ' ');
+            previousLineBreak = i;
+          }
+        } else if (!isPrintable(char)) {
+          return STYLE_DOUBLE;
+        }
+        plain = plain && isPlainSafe(char, prevChar, inblock);
+        prevChar = char;
+      }
+      // in case the end is missing a \n
+      hasFoldableLine = hasFoldableLine || (shouldTrackWidth &&
+        (i - previousLineBreak - 1 > lineWidth &&
+         string[previousLineBreak + 1] !== ' '));
+    }
+    // Although every style can represent \n without escaping, prefer block styles
+    // for multiline, since they're more readable and they don't add empty lines.
+    // Also prefer folding a super-long line.
+    if (!hasLineBreak && !hasFoldableLine) {
+      // Strings interpretable as another type have to be quoted;
+      // e.g. the string 'true' vs. the boolean true.
+      if (plain && !forceQuotes && !testAmbiguousType(string)) {
+        return STYLE_PLAIN;
+      }
+      return quotingType === QUOTING_TYPE_DOUBLE ? STYLE_DOUBLE : STYLE_SINGLE;
+    }
+    // Edge case: block indentation indicator can only have one digit.
+    if (indentPerLevel > 9 && needIndentIndicator(string)) {
+      return STYLE_DOUBLE;
+    }
+    // At this point we know block styles are valid.
+    // Prefer literal style unless we want to fold.
+    if (!forceQuotes) {
+      return hasFoldableLine ? STYLE_FOLDED : STYLE_LITERAL;
+    }
+    return quotingType === QUOTING_TYPE_DOUBLE ? STYLE_DOUBLE : STYLE_SINGLE;
+  }
+
+  // Note: line breaking/folding is implemented for only the folded style.
+  // NB. We drop the last trailing newline (if any) of a returned block scalar
+  //  since the dumper adds its own newline. This always works:
+  //    • No ending newline => unaffected; already using strip "-" chomping.
+  //    • Ending newline    => removed then restored.
+  //  Importantly, this keeps the "+" chomp indicator from gaining an extra line.
+  function writeScalar(state, string, level, iskey, inblock) {
+    state.dump = (function () {
+      if (string.length === 0) {
+        return state.quotingType === QUOTING_TYPE_DOUBLE ? '""' : "''";
+      }
+      if (!state.noCompatMode) {
+        if (DEPRECATED_BOOLEANS_SYNTAX.indexOf(string) !== -1 || DEPRECATED_BASE60_SYNTAX.test(string)) {
+          return state.quotingType === QUOTING_TYPE_DOUBLE ? ('"' + string + '"') : ("'" + string + "'");
+        }
+      }
+
+      var indent = state.indent * Math.max(1, level); // no 0-indent scalars
+      // As indentation gets deeper, let the width decrease monotonically
+      // to the lower bound min(state.lineWidth, 40).
+      // Note that this implies
+      //  state.lineWidth ≤ 40 + state.indent: width is fixed at the lower bound.
+      //  state.lineWidth > 40 + state.indent: width decreases until the lower bound.
+      // This behaves better than a constant minimum width which disallows narrower options,
+      // or an indent threshold which causes the width to suddenly increase.
+      var lineWidth = state.lineWidth === -1
+        ? -1 : Math.max(Math.min(state.lineWidth, 40), state.lineWidth - indent);
+
+      // Without knowing if keys are implicit/explicit, assume implicit for safety.
+      var singleLineOnly = iskey
+        // No block styles in flow mode.
+        || (state.flowLevel > -1 && level >= state.flowLevel);
+      function testAmbiguity(string) {
+        return testImplicitResolving(state, string);
+      }
+
+      switch (chooseScalarStyle(string, singleLineOnly, state.indent, lineWidth,
+        testAmbiguity, state.quotingType, state.forceQuotes && !iskey, inblock)) {
+
+        case STYLE_PLAIN:
+          return string;
+        case STYLE_SINGLE:
+          return "'" + string.replace(/'/g, "''") + "'";
+        case STYLE_LITERAL:
+          return '|' + blockHeader(string, state.indent)
+            + dropEndingNewline(indentString(string, indent));
+        case STYLE_FOLDED:
+          return '>' + blockHeader(string, state.indent)
+            + dropEndingNewline(indentString(foldString(string, lineWidth), indent));
+        case STYLE_DOUBLE:
+          return '"' + escapeString(string) + '"';
+        default:
+          throw new exception('impossible error: invalid scalar style');
+      }
+    }());
+  }
+
+  // Pre-conditions: string is valid for a block scalar, 1 <= indentPerLevel <= 9.
+  function blockHeader(string, indentPerLevel) {
+    var indentIndicator = needIndentIndicator(string) ? String(indentPerLevel) : '';
+
+    // note the special case: the string '\n' counts as a "trailing" empty line.
+    var clip =          string[string.length - 1] === '\n';
+    var keep = clip && (string[string.length - 2] === '\n' || string === '\n');
+    var chomp = keep ? '+' : (clip ? '' : '-');
+
+    return indentIndicator + chomp + '\n';
+  }
+
+  // (See the note for writeScalar.)
+  function dropEndingNewline(string) {
+    return string[string.length - 1] === '\n' ? string.slice(0, -1) : string;
+  }
+
+  // Note: a long line without a suitable break point will exceed the width limit.
+  // Pre-conditions: every char in str isPrintable, str.length > 0, width > 0.
+  function foldString(string, width) {
+    // In folded style, $k$ consecutive newlines output as $k+1$ newlines—
+    // unless they're before or after a more-indented line, or at the very
+    // beginning or end, in which case $k$ maps to $k$.
+    // Therefore, parse each chunk as newline(s) followed by a content line.
+    var lineRe = /(\n+)([^\n]*)/g;
+
+    // first line (possibly an empty line)
+    var result = (function () {
+      var nextLF = string.indexOf('\n');
+      nextLF = nextLF !== -1 ? nextLF : string.length;
+      lineRe.lastIndex = nextLF;
+      return foldLine(string.slice(0, nextLF), width);
+    }());
+    // If we haven't reached the first content line yet, don't add an extra \n.
+    var prevMoreIndented = string[0] === '\n' || string[0] === ' ';
+    var moreIndented;
+
+    // rest of the lines
+    var match;
+    while ((match = lineRe.exec(string))) {
+      var prefix = match[1], line = match[2];
+      moreIndented = (line[0] === ' ');
+      result += prefix
+        + (!prevMoreIndented && !moreIndented && line !== ''
+          ? '\n' : '')
+        + foldLine(line, width);
+      prevMoreIndented = moreIndented;
+    }
+
+    return result;
+  }
+
+  // Greedy line breaking.
+  // Picks the longest line under the limit each time,
+  // otherwise settles for the shortest line over the limit.
+  // NB. More-indented lines *cannot* be folded, as that would add an extra \n.
+  function foldLine(line, width) {
+    if (line === '' || line[0] === ' ') return line;
+
+    // Since a more-indented line adds a \n, breaks can't be followed by a space.
+    var breakRe = / [^ ]/g; // note: the match index will always be <= length-2.
+    var match;
+    // start is an inclusive index. end, curr, and next are exclusive.
+    var start = 0, end, curr = 0, next = 0;
+    var result = '';
+
+    // Invariants: 0 <= start <= length-1.
+    //   0 <= curr <= next <= max(0, length-2). curr - start <= width.
+    // Inside the loop:
+    //   A match implies length >= 2, so curr and next are <= length-2.
+    while ((match = breakRe.exec(line))) {
+      next = match.index;
+      // maintain invariant: curr - start <= width
+      if (next - start > width) {
+        end = (curr > start) ? curr : next; // derive end <= length-2
+        result += '\n' + line.slice(start, end);
+        // skip the space that was output as \n
+        start = end + 1;                    // derive start <= length-1
+      }
+      curr = next;
+    }
+
+    // By the invariants, start <= length-1, so there is something left over.
+    // It is either the whole string or a part starting from non-whitespace.
+    result += '\n';
+    // Insert a break if the remainder is too long and there is a break available.
+    if (line.length - start > width && curr > start) {
+      result += line.slice(start, curr) + '\n' + line.slice(curr + 1);
+    } else {
+      result += line.slice(start);
+    }
+
+    return result.slice(1); // drop extra \n joiner
+  }
+
+  // Escapes a double-quoted string.
+  function escapeString(string) {
+    var result = '';
+    var char = 0;
+    var escapeSeq;
+
+    for (var i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
+      char = codePointAt(string, i);
+      escapeSeq = ESCAPE_SEQUENCES[char];
+
+      if (!escapeSeq && isPrintable(char)) {
+        result += string[i];
+        if (char >= 0x10000) result += string[i + 1];
+      } else {
+        result += escapeSeq || encodeHex(char);
+      }
+    }
+
+    return result;
+  }
+
+  function writeFlowSequence(state, level, object) {
+    var _result = '',
+        _tag    = state.tag,
+        index,
+        length,
+        value;
+
+    for (index = 0, length = object.length; index < length; index += 1) {
+      value = object[index];
+
+      if (state.replacer) {
+        value = state.replacer.call(object, String(index), value);
+      }
+
+      // Write only valid elements, put null instead of invalid elements.
+      if (writeNode(state, level, value, false, false) ||
+          (typeof value === 'undefined' &&
+           writeNode(state, level, null, false, false))) {
+
+        if (_result !== '') _result += ',' + (!state.condenseFlow ? ' ' : '');
+        _result += state.dump;
+      }
+    }
+
+    state.tag = _tag;
+    state.dump = '[' + _result + ']';
+  }
+
+  function writeBlockSequence(state, level, object, compact) {
+    var _result = '',
+        _tag    = state.tag,
+        index,
+        length,
+        value;
+
+    for (index = 0, length = object.length; index < length; index += 1) {
+      value = object[index];
+
+      if (state.replacer) {
+        value = state.replacer.call(object, String(index), value);
+      }
+
+      // Write only valid elements, put null instead of invalid elements.
+      if (writeNode(state, level + 1, value, true, true, false, true) ||
+          (typeof value === 'undefined' &&
+           writeNode(state, level + 1, null, true, true, false, true))) {
+
+        if (!compact || _result !== '') {
+          _result += generateNextLine(state, level);
+        }
+
+        if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
+          _result += '-';
+        } else {
+          _result += '- ';
+        }
+
+        _result += state.dump;
+      }
+    }
+
+    state.tag = _tag;
+    state.dump = _result || '[]'; // Empty sequence if no valid values.
+  }
+
+  function writeFlowMapping(state, level, object) {
+    var _result       = '',
+        _tag          = state.tag,
+        objectKeyList = Object.keys(object),
+        index,
+        length,
+        objectKey,
+        objectValue,
+        pairBuffer;
+
+    for (index = 0, length = objectKeyList.length; index < length; index += 1) {
+
+      pairBuffer = '';
+      if (_result !== '') pairBuffer += ', ';
+
+      if (state.condenseFlow) pairBuffer += '"';
+
+      objectKey = objectKeyList[index];
+      objectValue = object[objectKey];
+
+      if (state.replacer) {
+        objectValue = state.replacer.call(object, objectKey, objectValue);
+      }
+
+      if (!writeNode(state, level, objectKey, false, false)) {
+        continue; // Skip this pair because of invalid key;
+      }
+
+      if (state.dump.length > 1024) pairBuffer += '? ';
+
+      pairBuffer += state.dump + (state.condenseFlow ? '"' : '') + ':' + (state.condenseFlow ? '' : ' ');
+
+      if (!writeNode(state, level, objectValue, false, false)) {
+        continue; // Skip this pair because of invalid value.
+      }
+
+      pairBuffer += state.dump;
+
+      // Both key and value are valid.
+      _result += pairBuffer;
+    }
+
+    state.tag = _tag;
+    state.dump = '{' + _result + '}';
+  }
+
+  function writeBlockMapping(state, level, object, compact) {
+    var _result       = '',
+        _tag          = state.tag,
+        objectKeyList = Object.keys(object),
+        index,
+        length,
+        objectKey,
+        objectValue,
+        explicitPair,
+        pairBuffer;
+
+    // Allow sorting keys so that the output file is deterministic
+    if (state.sortKeys === true) {
+      // Default sorting
+      objectKeyList.sort();
+    } else if (typeof state.sortKeys === 'function') {
+      // Custom sort function
+      objectKeyList.sort(state.sortKeys);
+    } else if (state.sortKeys) {
+      // Something is wrong
+      throw new exception('sortKeys must be a boolean or a function');
+    }
+
+    for (index = 0, length = objectKeyList.length; index < length; index += 1) {
+      pairBuffer = '';
+
+      if (!compact || _result !== '') {
+        pairBuffer += generateNextLine(state, level);
+      }
+
+      objectKey = objectKeyList[index];
+      objectValue = object[objectKey];
+
+      if (state.replacer) {
+        objectValue = state.replacer.call(object, objectKey, objectValue);
+      }
+
+      if (!writeNode(state, level + 1, objectKey, true, true, true)) {
+        continue; // Skip this pair because of invalid key.
+      }
+
+      explicitPair = (state.tag !== null && state.tag !== '?') ||
+                     (state.dump && state.dump.length > 1024);
+
+      if (explicitPair) {
+        if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
+          pairBuffer += '?';
+        } else {
+          pairBuffer += '? ';
+        }
+      }
+
+      pairBuffer += state.dump;
+
+      if (explicitPair) {
+        pairBuffer += generateNextLine(state, level);
+      }
+
+      if (!writeNode(state, level + 1, objectValue, true, explicitPair)) {
+        continue; // Skip this pair because of invalid value.
+      }
+
+      if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
+        pairBuffer += ':';
+      } else {
+        pairBuffer += ': ';
+      }
+
+      pairBuffer += state.dump;
+
+      // Both key and value are valid.
+      _result += pairBuffer;
+    }
+
+    state.tag = _tag;
+    state.dump = _result || '{}'; // Empty mapping if no valid pairs.
+  }
+
+  function detectType(state, object, explicit) {
+    var _result, typeList, index, length, type, style;
+
+    typeList = explicit ? state.explicitTypes : state.implicitTypes;
+
+    for (index = 0, length = typeList.length; index < length; index += 1) {
+      type = typeList[index];
+
+      if ((type.instanceOf  || type.predicate) &&
+          (!type.instanceOf || ((typeof object === 'object') && (object instanceof type.instanceOf))) &&
+          (!type.predicate  || type.predicate(object))) {
+
+        if (explicit) {
+          if (type.multi && type.representName) {
+            state.tag = type.representName(object);
+          } else {
+            state.tag = type.tag;
+          }
+        } else {
+          state.tag = '?';
+        }
+
+        if (type.represent) {
+          style = state.styleMap[type.tag] || type.defaultStyle;
+
+          if (_toString.call(type.represent) === '[object Function]') {
+            _result = type.represent(object, style);
+          } else if (_hasOwnProperty.call(type.represent, style)) {
+            _result = type.represent[style](object, style);
+          } else {
+            throw new exception('!<' + type.tag + '> tag resolver accepts not "' + style + '" style');
+          }
+
+          state.dump = _result;
+        }
+
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  // Serializes `object` and writes it to global `result`.
+  // Returns true on success, or false on invalid object.
+  //
+  function writeNode(state, level, object, block, compact, iskey, isblockseq) {
+    state.tag = null;
+    state.dump = object;
+
+    if (!detectType(state, object, false)) {
+      detectType(state, object, true);
+    }
+
+    var type = _toString.call(state.dump);
+    var inblock = block;
+    var tagStr;
+
+    if (block) {
+      block = (state.flowLevel < 0 || state.flowLevel > level);
+    }
+
+    var objectOrArray = type === '[object Object]' || type === '[object Array]',
+        duplicateIndex,
+        duplicate;
+
+    if (objectOrArray) {
+      duplicateIndex = state.duplicates.indexOf(object);
+      duplicate = duplicateIndex !== -1;
+    }
+
+    if ((state.tag !== null && state.tag !== '?') || duplicate || (state.indent !== 2 && level > 0)) {
+      compact = false;
+    }
+
+    if (duplicate && state.usedDuplicates[duplicateIndex]) {
+      state.dump = '*ref_' + duplicateIndex;
+    } else {
+      if (objectOrArray && duplicate && !state.usedDuplicates[duplicateIndex]) {
+        state.usedDuplicates[duplicateIndex] = true;
+      }
+      if (type === '[object Object]') {
+        if (block && (Object.keys(state.dump).length !== 0)) {
+          writeBlockMapping(state, level, state.dump, compact);
+          if (duplicate) {
+            state.dump = '&ref_' + duplicateIndex + state.dump;
+          }
+        } else {
+          writeFlowMapping(state, level, state.dump);
+          if (duplicate) {
+            state.dump = '&ref_' + duplicateIndex + ' ' + state.dump;
+          }
+        }
+      } else if (type === '[object Array]') {
+        if (block && (state.dump.length !== 0)) {
+          if (state.noArrayIndent && !isblockseq && level > 0) {
+            writeBlockSequence(state, level - 1, state.dump, compact);
+          } else {
+            writeBlockSequence(state, level, state.dump, compact);
+          }
+          if (duplicate) {
+            state.dump = '&ref_' + duplicateIndex + state.dump;
+          }
+        } else {
+          writeFlowSequence(state, level, state.dump);
+          if (duplicate) {
+            state.dump = '&ref_' + duplicateIndex + ' ' + state.dump;
+          }
+        }
+      } else if (type === '[object String]') {
+        if (state.tag !== '?') {
+          writeScalar(state, state.dump, level, iskey, inblock);
+        }
+      } else if (type === '[object Undefined]') {
+        return false;
+      } else {
+        if (state.skipInvalid) return false;
+        throw new exception('unacceptable kind of an object to dump ' + type);
+      }
+
+      if (state.tag !== null && state.tag !== '?') {
+        // Need to encode all characters except those allowed by the spec:
+        //
+        // [35] ns-dec-digit    ::=  [#x30-#x39] /* 0-9 */
+        // [36] ns-hex-digit    ::=  ns-dec-digit
+        //                         | [#x41-#x46] /* A-F */ | [#x61-#x66] /* a-f */
+        // [37] ns-ascii-letter ::=  [#x41-#x5A] /* A-Z */ | [#x61-#x7A] /* a-z */
+        // [38] ns-word-char    ::=  ns-dec-digit | ns-ascii-letter | “-”
+        // [39] ns-uri-char     ::=  “%” ns-hex-digit ns-hex-digit | ns-word-char | “#”
+        //                         | “;” | “/” | “?” | “:” | “@” | “&” | “=” | “+” | “$” | “,”
+        //                         | “_” | “.” | “!” | “~” | “*” | “'” | “(” | “)” | “[” | “]”
+        //
+        // Also need to encode '!' because it has special meaning (end of tag prefix).
+        //
+        tagStr = encodeURI(
+          state.tag[0] === '!' ? state.tag.slice(1) : state.tag
+        ).replace(/!/g, '%21');
+
+        if (state.tag[0] === '!') {
+          tagStr = '!' + tagStr;
+        } else if (tagStr.slice(0, 18) === 'tag:yaml.org,2002:') {
+          tagStr = '!!' + tagStr.slice(18);
+        } else {
+          tagStr = '!<' + tagStr + '>';
+        }
+
+        state.dump = tagStr + ' ' + state.dump;
+      }
+    }
+
+    return true;
+  }
+
+  function getDuplicateReferences(object, state) {
+    var objects = [],
+        duplicatesIndexes = [],
+        index,
+        length;
+
+    inspectNode(object, objects, duplicatesIndexes);
+
+    for (index = 0, length = duplicatesIndexes.length; index < length; index += 1) {
+      state.duplicates.push(objects[duplicatesIndexes[index]]);
+    }
+    state.usedDuplicates = new Array(length);
+  }
+
+  function inspectNode(object, objects, duplicatesIndexes) {
+    var objectKeyList,
+        index,
+        length;
+
+    if (object !== null && typeof object === 'object') {
+      index = objects.indexOf(object);
+      if (index !== -1) {
+        if (duplicatesIndexes.indexOf(index) === -1) {
+          duplicatesIndexes.push(index);
+        }
+      } else {
+        objects.push(object);
+
+        if (Array.isArray(object)) {
+          for (index = 0, length = object.length; index < length; index += 1) {
+            inspectNode(object[index], objects, duplicatesIndexes);
+          }
+        } else {
+          objectKeyList = Object.keys(object);
+
+          for (index = 0, length = objectKeyList.length; index < length; index += 1) {
+            inspectNode(object[objectKeyList[index]], objects, duplicatesIndexes);
+          }
+        }
+      }
+    }
+  }
+
+  function dump$1(input, options) {
+    options = options || {};
+
+    var state = new State(options);
+
+    if (!state.noRefs) getDuplicateReferences(input, state);
+
+    var value = input;
+
+    if (state.replacer) {
+      value = state.replacer.call({ '': value }, '', value);
+    }
+
+    if (writeNode(state, 0, value, true, true)) return state.dump + '\n';
+
+    return '';
+  }
+
+  var dump_1 = dump$1;
+
+  var dumper = {
+  	dump: dump_1
+  };
+
+  function renamed(from, to) {
+    return function () {
+      throw new Error('Function yaml.' + from + ' is removed in js-yaml 4. ' +
+        'Use yaml.' + to + ' instead, which is now safe by default.');
+    };
+  }
+
+
+  var Type                = type;
+  var Schema              = schema;
+  var FAILSAFE_SCHEMA     = failsafe;
+  var JSON_SCHEMA         = json;
+  var CORE_SCHEMA         = core;
+  var DEFAULT_SCHEMA      = _default;
+  var load                = loader.load;
+  var loadAll             = loader.loadAll;
+  var dump                = dumper.dump;
+  var YAMLException       = exception;
+
+  // Re-export all types in case user wants to create custom schema
+  var types = {
+    binary:    binary,
+    float:     float,
+    map:       map,
+    null:      _null,
+    pairs:     pairs,
+    set:       set,
+    timestamp: timestamp,
+    bool:      bool,
+    int:       int,
+    merge:     merge,
+    omap:      omap,
+    seq:       seq,
+    str:       str
+  };
+
+  // Removed functions from JS-YAML 3.0.x
+  var safeLoad            = renamed('safeLoad', 'load');
+  var safeLoadAll         = renamed('safeLoadAll', 'loadAll');
+  var safeDump            = renamed('safeDump', 'dump');
+
+  var jsYaml = {
+  	Type: Type,
+  	Schema: Schema,
+  	FAILSAFE_SCHEMA: FAILSAFE_SCHEMA,
+  	JSON_SCHEMA: JSON_SCHEMA,
+  	CORE_SCHEMA: CORE_SCHEMA,
+  	DEFAULT_SCHEMA: DEFAULT_SCHEMA,
+  	load: load,
+  	loadAll: loadAll,
+  	dump: dump,
+  	YAMLException: YAMLException,
+  	types: types,
+  	safeLoad: safeLoad,
+  	safeLoadAll: safeLoadAll,
+  	safeDump: safeDump
+  };
+
+  exports.CORE_SCHEMA = CORE_SCHEMA;
+  exports.DEFAULT_SCHEMA = DEFAULT_SCHEMA;
+  exports.FAILSAFE_SCHEMA = FAILSAFE_SCHEMA;
+  exports.JSON_SCHEMA = JSON_SCHEMA;
+  exports.Schema = Schema;
+  exports.Type = Type;
+  exports.YAMLException = YAMLException;
+  exports["default"] = jsYaml;
+  exports.dump = dump;
+  exports.load = load;
+  exports.loadAll = loadAll;
+  exports.safeDump = safeDump;
+  exports.safeLoad = safeLoad;
+  exports.safeLoadAll = safeLoadAll;
+  exports.types = types;
+
+  Object.defineProperty(exports, '__esModule', { value: true });
+
+}));
Index: frontend/node_modules/eslint/node_modules/js-yaml/dist/js-yaml.min.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/dist/js-yaml.min.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/dist/js-yaml.min.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,3 @@
+/*! js-yaml 4.1.1 https://github.com/nodeca/js-yaml @license MIT */
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t((e="undefined"!=typeof globalThis?globalThis:e||self).jsyaml={})}(this,function(e){"use strict";function t(e){return null==e}var n={isNothing:t,isObject:function(e){return"object"==typeof e&&null!==e},toArray:function(e){return Array.isArray(e)?e:t(e)?[]:[e]},repeat:function(e,t){var n,i="";for(n=0;n<t;n+=1)i+=e;return i},isNegativeZero:function(e){return 0===e&&Number.NEGATIVE_INFINITY===1/e},extend:function(e,t){var n,i,r,o;if(t)for(n=0,i=(o=Object.keys(t)).length;n<i;n+=1)e[r=o[n]]=t[r];return e}};function i(e,t){var n="",i=e.reason||"(unknown reason)";return e.mark?(e.mark.name&&(n+='in "'+e.mark.name+'" '),n+="("+(e.mark.line+1)+":"+(e.mark.column+1)+")",!t&&e.mark.snippet&&(n+="\n\n"+e.mark.snippet),i+" "+n):i}function r(e,t){Error.call(this),this.name="YAMLException",this.reason=e,this.mark=t,this.message=i(this,!1),Error.captureStackTrace?Error.captureStackTrace(this,this.constructor):this.stack=(new Error).stack||""}r.prototype=Object.create(Error.prototype),r.prototype.constructor=r,r.prototype.toString=function(e){return this.name+": "+i(this,e)};var o=r;function a(e,t,n,i,r){var o="",a="",l=Math.floor(r/2)-1;return i-t>l&&(t=i-l+(o=" ... 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",e.indent*t)}function Ye(e){return 32===e||9===e}function Re(e){return 32<=e&&e<=126||161<=e&&e<=55295&&8232!==e&&8233!==e||57344<=e&&e<=65533&&e!==Fe||65536<=e&&e<=1114111}function Be(e){return Re(e)&&e!==Fe&&13!==e&&10!==e}function Ke(e,t,n){var i=Be(e),r=i&&!Ye(e);return(n?i:i&&44!==e&&91!==e&&93!==e&&123!==e&&125!==e)&&35!==e&&!(58===t&&!r)||Be(t)&&!Ye(t)&&35===e||58===t&&r}function Pe(e,t){var n,i=e.charCodeAt(t);return i>=55296&&i<=56319&&t+1<e.length&&(n=e.charCodeAt(t+1))>=56320&&n<=57343?1024*(i-55296)+n-56320+65536:i}function We(e){return/^\n* /.test(e)}function He(e,t,n,i,r,o,a,l){var c,s,u=0,p=null,f=!1,d=!1,h=-1!==i,g=-1,m=Re(s=Pe(e,0))&&s!==Fe&&!Ye(s)&&45!==s&&63!==s&&58!==s&&44!==s&&91!==s&&93!==s&&123!==s&&125!==s&&35!==s&&38!==s&&42!==s&&33!==s&&124!==s&&61!==s&&62!==s&&39!==s&&34!==s&&37!==s&&64!==s&&96!==s&&function(e){return!Ye(e)&&58!==e}(Pe(e,e.length-1));if(t||a)for(c=0;c<e.length;u>=65536?c+=2:c++){if(!Re(u=Pe(e,c)))return 5;m=m&&Ke(u,p,l),p=u}else{for(c=0;c<e.length;u>=65536?c+=2:c++){if(10===(u=Pe(e,c)))f=!0,h&&(d=d||c-g-1>i&&" "!==e[g+1],g=c);else if(!Re(u))return 5;m=m&&Ke(u,p,l),p=u}d=d||h&&c-g-1>i&&" "!==e[g+1]}return f||d?n>9&&We(e)?5:a?2===o?5:2:d?4:3:!m||a||r(e)?2===o?5:2:1}function $e(e,t,n,i,r){e.dump=function(){if(0===t.length)return 2===e.quotingType?'""':"''";if(!e.noCompatMode&&(-1!==Me.indexOf(t)||Le.test(t)))return 2===e.quotingType?'"'+t+'"':"'"+t+"'";var a=e.indent*Math.max(1,n),l=-1===e.lineWidth?-1:Math.max(Math.min(e.lineWidth,40),e.lineWidth-a),c=i||e.flowLevel>-1&&n>=e.flowLevel;switch(He(t,c,e.indent,l,function(t){return function(e,t){var n,i;for(n=0,i=e.implicitTypes.length;n<i;n+=1)if(e.implicitTypes[n].resolve(t))return!0;return!1}(e,t)},e.quotingType,e.forceQuotes&&!i,r)){case 1:return t;case 2:return"'"+t.replace(/'/g,"''")+"'";case 3:return"|"+Ge(t,e.indent)+Ve(Ue(t,a));case 4:return">"+Ge(t,e.indent)+Ve(Ue(function(e,t){var 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r,o,a,l="",c=e.tag;for(r=0,o=n.length;r<o;r+=1)a=n[r],e.replacer&&(a=e.replacer.call(n,String(r),a)),(ze(e,t+1,a,!0,!0,!1,!0)||void 0===a&&ze(e,t+1,null,!0,!0,!1,!0))&&(i&&""===l||(l+=qe(e,t)),e.dump&&10===e.dump.charCodeAt(0)?l+="-":l+="- ",l+=e.dump);e.tag=c,e.dump=l||"[]"}function Qe(e,t,n){var i,r,a,l,c,s;for(a=0,l=(r=n?e.explicitTypes:e.implicitTypes).length;a<l;a+=1)if(((c=r[a]).instanceOf||c.predicate)&&(!c.instanceOf||"object"==typeof t&&t instanceof c.instanceOf)&&(!c.predicate||c.predicate(t))){if(n?c.multi&&c.representName?e.tag=c.representName(t):e.tag=c.tag:e.tag="?",c.represent){if(s=e.styleMap[c.tag]||c.defaultStyle,"[object Function]"===Te.call(c.represent))i=c.represent(t,s);else{if(!Ne.call(c.represent,s))throw new o("!<"+c.tag+'> tag resolver accepts not "'+s+'" style');i=c.represent[s](t,s)}e.dump=i}return!0}return!1}function ze(e,t,n,i,r,a,l){e.tag=null,e.dump=n,Qe(e,n,!1)||Qe(e,n,!0);var c,s=Te.call(e.dump),u=i;i&&(i=e.flowLevel<0||e.flowLevel>t);var p,f,d="[object Object]"===s||"[object Array]"===s;if(d&&(f=-1!==(p=e.duplicates.indexOf(n))),(null!==e.tag&&"?"!==e.tag||f||2!==e.indent&&t>0)&&(r=!1),f&&e.usedDuplicates[p])e.dump="*ref_"+p;else{if(d&&f&&!e.usedDuplicates[p]&&(e.usedDuplicates[p]=!0),"[object Object]"===s)i&&0!==Object.keys(e.dump).length?(!function(e,t,n,i){var r,a,l,c,s,u,p="",f=e.tag,d=Object.keys(n);if(!0===e.sortKeys)d.sort();else if("function"==typeof e.sortKeys)d.sort(e.sortKeys);else if(e.sortKeys)throw new o("sortKeys must be a boolean or a function");for(r=0,a=d.length;r<a;r+=1)u="",i&&""===p||(u+=qe(e,t)),c=n[l=d[r]],e.replacer&&(c=e.replacer.call(n,l,c)),ze(e,t+1,l,!0,!0,!0)&&((s=null!==e.tag&&"?"!==e.tag||e.dump&&e.dump.length>1024)&&(e.dump&&10===e.dump.charCodeAt(0)?u+="?":u+="? "),u+=e.dump,s&&(u+=qe(e,t)),ze(e,t+1,c,!0,s)&&(e.dump&&10===e.dump.charCodeAt(0)?u+=":":u+=": ",p+=u+=e.dump));e.tag=f,e.dump=p||"{}"}(e,t,e.dump,r),f&&(e.dump="&ref_"+p+e.dump)):(!function(e,t,n){var i,r,o,a,l,c="",s=e.tag,u=Object.keys(n);for(i=0,r=u.length;i<r;i+=1)l="",""!==c&&(l+=", "),e.condenseFlow&&(l+='"'),a=n[o=u[i]],e.replacer&&(a=e.replacer.call(n,o,a)),ze(e,t,o,!1,!1)&&(e.dump.length>1024&&(l+="? "),l+=e.dump+(e.condenseFlow?'"':"")+":"+(e.condenseFlow?"":" "),ze(e,t,a,!1,!1)&&(c+=l+=e.dump));e.tag=s,e.dump="{"+c+"}"}(e,t,e.dump),f&&(e.dump="&ref_"+p+" "+e.dump));else if("[object Array]"===s)i&&0!==e.dump.length?(e.noArrayIndent&&!l&&t>0?Je(e,t-1,e.dump,r):Je(e,t,e.dump,r),f&&(e.dump="&ref_"+p+e.dump)):(!function(e,t,n){var i,r,o,a="",l=e.tag;for(i=0,r=n.length;i<r;i+=1)o=n[i],e.replacer&&(o=e.replacer.call(n,String(i),o)),(ze(e,t,o,!1,!1)||void 0===o&&ze(e,t,null,!1,!1))&&(""!==a&&(a+=","+(e.condenseFlow?"":" ")),a+=e.dump);e.tag=l,e.dump="["+a+"]"}(e,t,e.dump),f&&(e.dump="&ref_"+p+" "+e.dump));else{if("[object String]"!==s){if("[object Undefined]"===s)return!1;if(e.skipInvalid)return!1;throw new o("unacceptable kind of an object to dump "+s)}"?"!==e.tag&&$e(e,e.dump,t,a,u)}null!==e.tag&&"?"!==e.tag&&(c=encodeURI("!"===e.tag[0]?e.tag.slice(1):e.tag).replace(/!/g,"%21"),c="!"===e.tag[0]?"!"+c:"tag:yaml.org,2002:"===c.slice(0,18)?"!!"+c.slice(18):"!<"+c+">",e.dump=c+" "+e.dump)}return!0}function Xe(e,t){var n,i,r=[],o=[];for(et(e,r,o),n=0,i=o.length;n<i;n+=1)t.duplicates.push(r[o[n]]);t.usedDuplicates=new Array(i)}function et(e,t,n){var i,r,o;if(null!==e&&"object"==typeof e)if(-1!==(r=t.indexOf(e)))-1===n.indexOf(r)&&n.push(r);else if(t.push(e),Array.isArray(e))for(r=0,o=e.length;r<o;r+=1)et(e[r],t,n);else for(r=0,o=(i=Object.keys(e)).length;r<o;r+=1)et(e[i[r]],t,n)}function tt(e,t){return function(){throw new Error("Function yaml."+e+" is removed in js-yaml 4. Use yaml."+t+" instead, which is now safe by default.")}}var nt=p,it=h,rt=b,ot=j,at=T,lt=P,ct=je.load,st=je.loadAll,ut={dump:function(e,t){var n=new De(t=t||{});n.noRefs||Xe(e,n);var i=e;return n.replacer&&(i=n.replacer.call({"":i},"",i)),ze(n,0,i,!0,!0)?n.dump+"\n":""}}.dump,pt=o,ft={binary:_,float:O,map:y,null:A,pairs:R,set:K,timestamp:E,bool:v,int:x,merge:M,omap:q,seq:m,str:g},dt=tt("safeLoad","load"),ht=tt("safeLoadAll","loadAll"),gt=tt("safeDump","dump"),mt={Type:nt,Schema:it,FAILSAFE_SCHEMA:rt,JSON_SCHEMA:ot,CORE_SCHEMA:at,DEFAULT_SCHEMA:lt,load:ct,loadAll:st,dump:ut,YAMLException:pt,types:ft,safeLoad:dt,safeLoadAll:ht,safeDump:gt};e.CORE_SCHEMA=at,e.DEFAULT_SCHEMA=lt,e.FAILSAFE_SCHEMA=rt,e.JSON_SCHEMA=ot,e.Schema=it,e.Type=nt,e.YAMLException=pt,e.default=mt,e.dump=ut,e.load=ct,e.loadAll=st,e.safeDump=gt,e.safeLoad=dt,e.safeLoadAll=ht,e.types=ft,Object.defineProperty(e,"__esModule",{value:!0})});
Index: frontend/node_modules/eslint/node_modules/js-yaml/dist/js-yaml.mjs
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/dist/js-yaml.mjs	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/dist/js-yaml.mjs	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,3856 @@
+
+/*! js-yaml 4.1.1 https://github.com/nodeca/js-yaml @license MIT */
+function isNothing(subject) {
+  return (typeof subject === 'undefined') || (subject === null);
+}
+
+
+function isObject(subject) {
+  return (typeof subject === 'object') && (subject !== null);
+}
+
+
+function toArray(sequence) {
+  if (Array.isArray(sequence)) return sequence;
+  else if (isNothing(sequence)) return [];
+
+  return [ sequence ];
+}
+
+
+function extend(target, source) {
+  var index, length, key, sourceKeys;
+
+  if (source) {
+    sourceKeys = Object.keys(source);
+
+    for (index = 0, length = sourceKeys.length; index < length; index += 1) {
+      key = sourceKeys[index];
+      target[key] = source[key];
+    }
+  }
+
+  return target;
+}
+
+
+function repeat(string, count) {
+  var result = '', cycle;
+
+  for (cycle = 0; cycle < count; cycle += 1) {
+    result += string;
+  }
+
+  return result;
+}
+
+
+function isNegativeZero(number) {
+  return (number === 0) && (Number.NEGATIVE_INFINITY === 1 / number);
+}
+
+
+var isNothing_1      = isNothing;
+var isObject_1       = isObject;
+var toArray_1        = toArray;
+var repeat_1         = repeat;
+var isNegativeZero_1 = isNegativeZero;
+var extend_1         = extend;
+
+var common = {
+	isNothing: isNothing_1,
+	isObject: isObject_1,
+	toArray: toArray_1,
+	repeat: repeat_1,
+	isNegativeZero: isNegativeZero_1,
+	extend: extend_1
+};
+
+// YAML error class. http://stackoverflow.com/questions/8458984
+
+
+function formatError(exception, compact) {
+  var where = '', message = exception.reason || '(unknown reason)';
+
+  if (!exception.mark) return message;
+
+  if (exception.mark.name) {
+    where += 'in "' + exception.mark.name + '" ';
+  }
+
+  where += '(' + (exception.mark.line + 1) + ':' + (exception.mark.column + 1) + ')';
+
+  if (!compact && exception.mark.snippet) {
+    where += '\n\n' + exception.mark.snippet;
+  }
+
+  return message + ' ' + where;
+}
+
+
+function YAMLException$1(reason, mark) {
+  // Super constructor
+  Error.call(this);
+
+  this.name = 'YAMLException';
+  this.reason = reason;
+  this.mark = mark;
+  this.message = formatError(this, false);
+
+  // Include stack trace in error object
+  if (Error.captureStackTrace) {
+    // Chrome and NodeJS
+    Error.captureStackTrace(this, this.constructor);
+  } else {
+    // FF, IE 10+ and Safari 6+. Fallback for others
+    this.stack = (new Error()).stack || '';
+  }
+}
+
+
+// Inherit from Error
+YAMLException$1.prototype = Object.create(Error.prototype);
+YAMLException$1.prototype.constructor = YAMLException$1;
+
+
+YAMLException$1.prototype.toString = function toString(compact) {
+  return this.name + ': ' + formatError(this, compact);
+};
+
+
+var exception = YAMLException$1;
+
+// get snippet for a single line, respecting maxLength
+function getLine(buffer, lineStart, lineEnd, position, maxLineLength) {
+  var head = '';
+  var tail = '';
+  var maxHalfLength = Math.floor(maxLineLength / 2) - 1;
+
+  if (position - lineStart > maxHalfLength) {
+    head = ' ... ';
+    lineStart = position - maxHalfLength + head.length;
+  }
+
+  if (lineEnd - position > maxHalfLength) {
+    tail = ' ...';
+    lineEnd = position + maxHalfLength - tail.length;
+  }
+
+  return {
+    str: head + buffer.slice(lineStart, lineEnd).replace(/\t/g, '→') + tail,
+    pos: position - lineStart + head.length // relative position
+  };
+}
+
+
+function padStart(string, max) {
+  return common.repeat(' ', max - string.length) + string;
+}
+
+
+function makeSnippet(mark, options) {
+  options = Object.create(options || null);
+
+  if (!mark.buffer) return null;
+
+  if (!options.maxLength) options.maxLength = 79;
+  if (typeof options.indent      !== 'number') options.indent      = 1;
+  if (typeof options.linesBefore !== 'number') options.linesBefore = 3;
+  if (typeof options.linesAfter  !== 'number') options.linesAfter  = 2;
+
+  var re = /\r?\n|\r|\0/g;
+  var lineStarts = [ 0 ];
+  var lineEnds = [];
+  var match;
+  var foundLineNo = -1;
+
+  while ((match = re.exec(mark.buffer))) {
+    lineEnds.push(match.index);
+    lineStarts.push(match.index + match[0].length);
+
+    if (mark.position <= match.index && foundLineNo < 0) {
+      foundLineNo = lineStarts.length - 2;
+    }
+  }
+
+  if (foundLineNo < 0) foundLineNo = lineStarts.length - 1;
+
+  var result = '', i, line;
+  var lineNoLength = Math.min(mark.line + options.linesAfter, lineEnds.length).toString().length;
+  var maxLineLength = options.maxLength - (options.indent + lineNoLength + 3);
+
+  for (i = 1; i <= options.linesBefore; i++) {
+    if (foundLineNo - i < 0) break;
+    line = getLine(
+      mark.buffer,
+      lineStarts[foundLineNo - i],
+      lineEnds[foundLineNo - i],
+      mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo - i]),
+      maxLineLength
+    );
+    result = common.repeat(' ', options.indent) + padStart((mark.line - i + 1).toString(), lineNoLength) +
+      ' | ' + line.str + '\n' + result;
+  }
+
+  line = getLine(mark.buffer, lineStarts[foundLineNo], lineEnds[foundLineNo], mark.position, maxLineLength);
+  result += common.repeat(' ', options.indent) + padStart((mark.line + 1).toString(), lineNoLength) +
+    ' | ' + line.str + '\n';
+  result += common.repeat('-', options.indent + lineNoLength + 3 + line.pos) + '^' + '\n';
+
+  for (i = 1; i <= options.linesAfter; i++) {
+    if (foundLineNo + i >= lineEnds.length) break;
+    line = getLine(
+      mark.buffer,
+      lineStarts[foundLineNo + i],
+      lineEnds[foundLineNo + i],
+      mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo + i]),
+      maxLineLength
+    );
+    result += common.repeat(' ', options.indent) + padStart((mark.line + i + 1).toString(), lineNoLength) +
+      ' | ' + line.str + '\n';
+  }
+
+  return result.replace(/\n$/, '');
+}
+
+
+var snippet = makeSnippet;
+
+var TYPE_CONSTRUCTOR_OPTIONS = [
+  'kind',
+  'multi',
+  'resolve',
+  'construct',
+  'instanceOf',
+  'predicate',
+  'represent',
+  'representName',
+  'defaultStyle',
+  'styleAliases'
+];
+
+var YAML_NODE_KINDS = [
+  'scalar',
+  'sequence',
+  'mapping'
+];
+
+function compileStyleAliases(map) {
+  var result = {};
+
+  if (map !== null) {
+    Object.keys(map).forEach(function (style) {
+      map[style].forEach(function (alias) {
+        result[String(alias)] = style;
+      });
+    });
+  }
+
+  return result;
+}
+
+function Type$1(tag, options) {
+  options = options || {};
+
+  Object.keys(options).forEach(function (name) {
+    if (TYPE_CONSTRUCTOR_OPTIONS.indexOf(name) === -1) {
+      throw new exception('Unknown option "' + name + '" is met in definition of "' + tag + '" YAML type.');
+    }
+  });
+
+  // TODO: Add tag format check.
+  this.options       = options; // keep original options in case user wants to extend this type later
+  this.tag           = tag;
+  this.kind          = options['kind']          || null;
+  this.resolve       = options['resolve']       || function () { return true; };
+  this.construct     = options['construct']     || function (data) { return data; };
+  this.instanceOf    = options['instanceOf']    || null;
+  this.predicate     = options['predicate']     || null;
+  this.represent     = options['represent']     || null;
+  this.representName = options['representName'] || null;
+  this.defaultStyle  = options['defaultStyle']  || null;
+  this.multi         = options['multi']         || false;
+  this.styleAliases  = compileStyleAliases(options['styleAliases'] || null);
+
+  if (YAML_NODE_KINDS.indexOf(this.kind) === -1) {
+    throw new exception('Unknown kind "' + this.kind + '" is specified for "' + tag + '" YAML type.');
+  }
+}
+
+var type = Type$1;
+
+/*eslint-disable max-len*/
+
+
+
+
+
+function compileList(schema, name) {
+  var result = [];
+
+  schema[name].forEach(function (currentType) {
+    var newIndex = result.length;
+
+    result.forEach(function (previousType, previousIndex) {
+      if (previousType.tag === currentType.tag &&
+          previousType.kind === currentType.kind &&
+          previousType.multi === currentType.multi) {
+
+        newIndex = previousIndex;
+      }
+    });
+
+    result[newIndex] = currentType;
+  });
+
+  return result;
+}
+
+
+function compileMap(/* lists... */) {
+  var result = {
+        scalar: {},
+        sequence: {},
+        mapping: {},
+        fallback: {},
+        multi: {
+          scalar: [],
+          sequence: [],
+          mapping: [],
+          fallback: []
+        }
+      }, index, length;
+
+  function collectType(type) {
+    if (type.multi) {
+      result.multi[type.kind].push(type);
+      result.multi['fallback'].push(type);
+    } else {
+      result[type.kind][type.tag] = result['fallback'][type.tag] = type;
+    }
+  }
+
+  for (index = 0, length = arguments.length; index < length; index += 1) {
+    arguments[index].forEach(collectType);
+  }
+  return result;
+}
+
+
+function Schema$1(definition) {
+  return this.extend(definition);
+}
+
+
+Schema$1.prototype.extend = function extend(definition) {
+  var implicit = [];
+  var explicit = [];
+
+  if (definition instanceof type) {
+    // Schema.extend(type)
+    explicit.push(definition);
+
+  } else if (Array.isArray(definition)) {
+    // Schema.extend([ type1, type2, ... ])
+    explicit = explicit.concat(definition);
+
+  } else if (definition && (Array.isArray(definition.implicit) || Array.isArray(definition.explicit))) {
+    // Schema.extend({ explicit: [ type1, type2, ... ], implicit: [ type1, type2, ... ] })
+    if (definition.implicit) implicit = implicit.concat(definition.implicit);
+    if (definition.explicit) explicit = explicit.concat(definition.explicit);
+
+  } else {
+    throw new exception('Schema.extend argument should be a Type, [ Type ], ' +
+      'or a schema definition ({ implicit: [...], explicit: [...] })');
+  }
+
+  implicit.forEach(function (type$1) {
+    if (!(type$1 instanceof type)) {
+      throw new exception('Specified list of YAML types (or a single Type object) contains a non-Type object.');
+    }
+
+    if (type$1.loadKind && type$1.loadKind !== 'scalar') {
+      throw new exception('There is a non-scalar type in the implicit list of a schema. Implicit resolving of such types is not supported.');
+    }
+
+    if (type$1.multi) {
+      throw new exception('There is a multi type in the implicit list of a schema. Multi tags can only be listed as explicit.');
+    }
+  });
+
+  explicit.forEach(function (type$1) {
+    if (!(type$1 instanceof type)) {
+      throw new exception('Specified list of YAML types (or a single Type object) contains a non-Type object.');
+    }
+  });
+
+  var result = Object.create(Schema$1.prototype);
+
+  result.implicit = (this.implicit || []).concat(implicit);
+  result.explicit = (this.explicit || []).concat(explicit);
+
+  result.compiledImplicit = compileList(result, 'implicit');
+  result.compiledExplicit = compileList(result, 'explicit');
+  result.compiledTypeMap  = compileMap(result.compiledImplicit, result.compiledExplicit);
+
+  return result;
+};
+
+
+var schema = Schema$1;
+
+var str = new type('tag:yaml.org,2002:str', {
+  kind: 'scalar',
+  construct: function (data) { return data !== null ? data : ''; }
+});
+
+var seq = new type('tag:yaml.org,2002:seq', {
+  kind: 'sequence',
+  construct: function (data) { return data !== null ? data : []; }
+});
+
+var map = new type('tag:yaml.org,2002:map', {
+  kind: 'mapping',
+  construct: function (data) { return data !== null ? data : {}; }
+});
+
+var failsafe = new schema({
+  explicit: [
+    str,
+    seq,
+    map
+  ]
+});
+
+function resolveYamlNull(data) {
+  if (data === null) return true;
+
+  var max = data.length;
+
+  return (max === 1 && data === '~') ||
+         (max === 4 && (data === 'null' || data === 'Null' || data === 'NULL'));
+}
+
+function constructYamlNull() {
+  return null;
+}
+
+function isNull(object) {
+  return object === null;
+}
+
+var _null = new type('tag:yaml.org,2002:null', {
+  kind: 'scalar',
+  resolve: resolveYamlNull,
+  construct: constructYamlNull,
+  predicate: isNull,
+  represent: {
+    canonical: function () { return '~';    },
+    lowercase: function () { return 'null'; },
+    uppercase: function () { return 'NULL'; },
+    camelcase: function () { return 'Null'; },
+    empty:     function () { return '';     }
+  },
+  defaultStyle: 'lowercase'
+});
+
+function resolveYamlBoolean(data) {
+  if (data === null) return false;
+
+  var max = data.length;
+
+  return (max === 4 && (data === 'true' || data === 'True' || data === 'TRUE')) ||
+         (max === 5 && (data === 'false' || data === 'False' || data === 'FALSE'));
+}
+
+function constructYamlBoolean(data) {
+  return data === 'true' ||
+         data === 'True' ||
+         data === 'TRUE';
+}
+
+function isBoolean(object) {
+  return Object.prototype.toString.call(object) === '[object Boolean]';
+}
+
+var bool = new type('tag:yaml.org,2002:bool', {
+  kind: 'scalar',
+  resolve: resolveYamlBoolean,
+  construct: constructYamlBoolean,
+  predicate: isBoolean,
+  represent: {
+    lowercase: function (object) { return object ? 'true' : 'false'; },
+    uppercase: function (object) { return object ? 'TRUE' : 'FALSE'; },
+    camelcase: function (object) { return object ? 'True' : 'False'; }
+  },
+  defaultStyle: 'lowercase'
+});
+
+function isHexCode(c) {
+  return ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) ||
+         ((0x41/* A */ <= c) && (c <= 0x46/* F */)) ||
+         ((0x61/* a */ <= c) && (c <= 0x66/* f */));
+}
+
+function isOctCode(c) {
+  return ((0x30/* 0 */ <= c) && (c <= 0x37/* 7 */));
+}
+
+function isDecCode(c) {
+  return ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */));
+}
+
+function resolveYamlInteger(data) {
+  if (data === null) return false;
+
+  var max = data.length,
+      index = 0,
+      hasDigits = false,
+      ch;
+
+  if (!max) return false;
+
+  ch = data[index];
+
+  // sign
+  if (ch === '-' || ch === '+') {
+    ch = data[++index];
+  }
+
+  if (ch === '0') {
+    // 0
+    if (index + 1 === max) return true;
+    ch = data[++index];
+
+    // base 2, base 8, base 16
+
+    if (ch === 'b') {
+      // base 2
+      index++;
+
+      for (; index < max; index++) {
+        ch = data[index];
+        if (ch === '_') continue;
+        if (ch !== '0' && ch !== '1') return false;
+        hasDigits = true;
+      }
+      return hasDigits && ch !== '_';
+    }
+
+
+    if (ch === 'x') {
+      // base 16
+      index++;
+
+      for (; index < max; index++) {
+        ch = data[index];
+        if (ch === '_') continue;
+        if (!isHexCode(data.charCodeAt(index))) return false;
+        hasDigits = true;
+      }
+      return hasDigits && ch !== '_';
+    }
+
+
+    if (ch === 'o') {
+      // base 8
+      index++;
+
+      for (; index < max; index++) {
+        ch = data[index];
+        if (ch === '_') continue;
+        if (!isOctCode(data.charCodeAt(index))) return false;
+        hasDigits = true;
+      }
+      return hasDigits && ch !== '_';
+    }
+  }
+
+  // base 10 (except 0)
+
+  // value should not start with `_`;
+  if (ch === '_') return false;
+
+  for (; index < max; index++) {
+    ch = data[index];
+    if (ch === '_') continue;
+    if (!isDecCode(data.charCodeAt(index))) {
+      return false;
+    }
+    hasDigits = true;
+  }
+
+  // Should have digits and should not end with `_`
+  if (!hasDigits || ch === '_') return false;
+
+  return true;
+}
+
+function constructYamlInteger(data) {
+  var value = data, sign = 1, ch;
+
+  if (value.indexOf('_') !== -1) {
+    value = value.replace(/_/g, '');
+  }
+
+  ch = value[0];
+
+  if (ch === '-' || ch === '+') {
+    if (ch === '-') sign = -1;
+    value = value.slice(1);
+    ch = value[0];
+  }
+
+  if (value === '0') return 0;
+
+  if (ch === '0') {
+    if (value[1] === 'b') return sign * parseInt(value.slice(2), 2);
+    if (value[1] === 'x') return sign * parseInt(value.slice(2), 16);
+    if (value[1] === 'o') return sign * parseInt(value.slice(2), 8);
+  }
+
+  return sign * parseInt(value, 10);
+}
+
+function isInteger(object) {
+  return (Object.prototype.toString.call(object)) === '[object Number]' &&
+         (object % 1 === 0 && !common.isNegativeZero(object));
+}
+
+var int = new type('tag:yaml.org,2002:int', {
+  kind: 'scalar',
+  resolve: resolveYamlInteger,
+  construct: constructYamlInteger,
+  predicate: isInteger,
+  represent: {
+    binary:      function (obj) { return obj >= 0 ? '0b' + obj.toString(2) : '-0b' + obj.toString(2).slice(1); },
+    octal:       function (obj) { return obj >= 0 ? '0o'  + obj.toString(8) : '-0o'  + obj.toString(8).slice(1); },
+    decimal:     function (obj) { return obj.toString(10); },
+    /* eslint-disable max-len */
+    hexadecimal: function (obj) { return obj >= 0 ? '0x' + obj.toString(16).toUpperCase() :  '-0x' + obj.toString(16).toUpperCase().slice(1); }
+  },
+  defaultStyle: 'decimal',
+  styleAliases: {
+    binary:      [ 2,  'bin' ],
+    octal:       [ 8,  'oct' ],
+    decimal:     [ 10, 'dec' ],
+    hexadecimal: [ 16, 'hex' ]
+  }
+});
+
+var YAML_FLOAT_PATTERN = new RegExp(
+  // 2.5e4, 2.5 and integers
+  '^(?:[-+]?(?:[0-9][0-9_]*)(?:\\.[0-9_]*)?(?:[eE][-+]?[0-9]+)?' +
+  // .2e4, .2
+  // special case, seems not from spec
+  '|\\.[0-9_]+(?:[eE][-+]?[0-9]+)?' +
+  // .inf
+  '|[-+]?\\.(?:inf|Inf|INF)' +
+  // .nan
+  '|\\.(?:nan|NaN|NAN))$');
+
+function resolveYamlFloat(data) {
+  if (data === null) return false;
+
+  if (!YAML_FLOAT_PATTERN.test(data) ||
+      // Quick hack to not allow integers end with `_`
+      // Probably should update regexp & check speed
+      data[data.length - 1] === '_') {
+    return false;
+  }
+
+  return true;
+}
+
+function constructYamlFloat(data) {
+  var value, sign;
+
+  value  = data.replace(/_/g, '').toLowerCase();
+  sign   = value[0] === '-' ? -1 : 1;
+
+  if ('+-'.indexOf(value[0]) >= 0) {
+    value = value.slice(1);
+  }
+
+  if (value === '.inf') {
+    return (sign === 1) ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY;
+
+  } else if (value === '.nan') {
+    return NaN;
+  }
+  return sign * parseFloat(value, 10);
+}
+
+
+var SCIENTIFIC_WITHOUT_DOT = /^[-+]?[0-9]+e/;
+
+function representYamlFloat(object, style) {
+  var res;
+
+  if (isNaN(object)) {
+    switch (style) {
+      case 'lowercase': return '.nan';
+      case 'uppercase': return '.NAN';
+      case 'camelcase': return '.NaN';
+    }
+  } else if (Number.POSITIVE_INFINITY === object) {
+    switch (style) {
+      case 'lowercase': return '.inf';
+      case 'uppercase': return '.INF';
+      case 'camelcase': return '.Inf';
+    }
+  } else if (Number.NEGATIVE_INFINITY === object) {
+    switch (style) {
+      case 'lowercase': return '-.inf';
+      case 'uppercase': return '-.INF';
+      case 'camelcase': return '-.Inf';
+    }
+  } else if (common.isNegativeZero(object)) {
+    return '-0.0';
+  }
+
+  res = object.toString(10);
+
+  // JS stringifier can build scientific format without dots: 5e-100,
+  // while YAML requres dot: 5.e-100. Fix it with simple hack
+
+  return SCIENTIFIC_WITHOUT_DOT.test(res) ? res.replace('e', '.e') : res;
+}
+
+function isFloat(object) {
+  return (Object.prototype.toString.call(object) === '[object Number]') &&
+         (object % 1 !== 0 || common.isNegativeZero(object));
+}
+
+var float = new type('tag:yaml.org,2002:float', {
+  kind: 'scalar',
+  resolve: resolveYamlFloat,
+  construct: constructYamlFloat,
+  predicate: isFloat,
+  represent: representYamlFloat,
+  defaultStyle: 'lowercase'
+});
+
+var json = failsafe.extend({
+  implicit: [
+    _null,
+    bool,
+    int,
+    float
+  ]
+});
+
+var core = json;
+
+var YAML_DATE_REGEXP = new RegExp(
+  '^([0-9][0-9][0-9][0-9])'          + // [1] year
+  '-([0-9][0-9])'                    + // [2] month
+  '-([0-9][0-9])$');                   // [3] day
+
+var YAML_TIMESTAMP_REGEXP = new RegExp(
+  '^([0-9][0-9][0-9][0-9])'          + // [1] year
+  '-([0-9][0-9]?)'                   + // [2] month
+  '-([0-9][0-9]?)'                   + // [3] day
+  '(?:[Tt]|[ \\t]+)'                 + // ...
+  '([0-9][0-9]?)'                    + // [4] hour
+  ':([0-9][0-9])'                    + // [5] minute
+  ':([0-9][0-9])'                    + // [6] second
+  '(?:\\.([0-9]*))?'                 + // [7] fraction
+  '(?:[ \\t]*(Z|([-+])([0-9][0-9]?)' + // [8] tz [9] tz_sign [10] tz_hour
+  '(?::([0-9][0-9]))?))?$');           // [11] tz_minute
+
+function resolveYamlTimestamp(data) {
+  if (data === null) return false;
+  if (YAML_DATE_REGEXP.exec(data) !== null) return true;
+  if (YAML_TIMESTAMP_REGEXP.exec(data) !== null) return true;
+  return false;
+}
+
+function constructYamlTimestamp(data) {
+  var match, year, month, day, hour, minute, second, fraction = 0,
+      delta = null, tz_hour, tz_minute, date;
+
+  match = YAML_DATE_REGEXP.exec(data);
+  if (match === null) match = YAML_TIMESTAMP_REGEXP.exec(data);
+
+  if (match === null) throw new Error('Date resolve error');
+
+  // match: [1] year [2] month [3] day
+
+  year = +(match[1]);
+  month = +(match[2]) - 1; // JS month starts with 0
+  day = +(match[3]);
+
+  if (!match[4]) { // no hour
+    return new Date(Date.UTC(year, month, day));
+  }
+
+  // match: [4] hour [5] minute [6] second [7] fraction
+
+  hour = +(match[4]);
+  minute = +(match[5]);
+  second = +(match[6]);
+
+  if (match[7]) {
+    fraction = match[7].slice(0, 3);
+    while (fraction.length < 3) { // milli-seconds
+      fraction += '0';
+    }
+    fraction = +fraction;
+  }
+
+  // match: [8] tz [9] tz_sign [10] tz_hour [11] tz_minute
+
+  if (match[9]) {
+    tz_hour = +(match[10]);
+    tz_minute = +(match[11] || 0);
+    delta = (tz_hour * 60 + tz_minute) * 60000; // delta in mili-seconds
+    if (match[9] === '-') delta = -delta;
+  }
+
+  date = new Date(Date.UTC(year, month, day, hour, minute, second, fraction));
+
+  if (delta) date.setTime(date.getTime() - delta);
+
+  return date;
+}
+
+function representYamlTimestamp(object /*, style*/) {
+  return object.toISOString();
+}
+
+var timestamp = new type('tag:yaml.org,2002:timestamp', {
+  kind: 'scalar',
+  resolve: resolveYamlTimestamp,
+  construct: constructYamlTimestamp,
+  instanceOf: Date,
+  represent: representYamlTimestamp
+});
+
+function resolveYamlMerge(data) {
+  return data === '<<' || data === null;
+}
+
+var merge = new type('tag:yaml.org,2002:merge', {
+  kind: 'scalar',
+  resolve: resolveYamlMerge
+});
+
+/*eslint-disable no-bitwise*/
+
+
+
+
+
+// [ 64, 65, 66 ] -> [ padding, CR, LF ]
+var BASE64_MAP = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\n\r';
+
+
+function resolveYamlBinary(data) {
+  if (data === null) return false;
+
+  var code, idx, bitlen = 0, max = data.length, map = BASE64_MAP;
+
+  // Convert one by one.
+  for (idx = 0; idx < max; idx++) {
+    code = map.indexOf(data.charAt(idx));
+
+    // Skip CR/LF
+    if (code > 64) continue;
+
+    // Fail on illegal characters
+    if (code < 0) return false;
+
+    bitlen += 6;
+  }
+
+  // If there are any bits left, source was corrupted
+  return (bitlen % 8) === 0;
+}
+
+function constructYamlBinary(data) {
+  var idx, tailbits,
+      input = data.replace(/[\r\n=]/g, ''), // remove CR/LF & padding to simplify scan
+      max = input.length,
+      map = BASE64_MAP,
+      bits = 0,
+      result = [];
+
+  // Collect by 6*4 bits (3 bytes)
+
+  for (idx = 0; idx < max; idx++) {
+    if ((idx % 4 === 0) && idx) {
+      result.push((bits >> 16) & 0xFF);
+      result.push((bits >> 8) & 0xFF);
+      result.push(bits & 0xFF);
+    }
+
+    bits = (bits << 6) | map.indexOf(input.charAt(idx));
+  }
+
+  // Dump tail
+
+  tailbits = (max % 4) * 6;
+
+  if (tailbits === 0) {
+    result.push((bits >> 16) & 0xFF);
+    result.push((bits >> 8) & 0xFF);
+    result.push(bits & 0xFF);
+  } else if (tailbits === 18) {
+    result.push((bits >> 10) & 0xFF);
+    result.push((bits >> 2) & 0xFF);
+  } else if (tailbits === 12) {
+    result.push((bits >> 4) & 0xFF);
+  }
+
+  return new Uint8Array(result);
+}
+
+function representYamlBinary(object /*, style*/) {
+  var result = '', bits = 0, idx, tail,
+      max = object.length,
+      map = BASE64_MAP;
+
+  // Convert every three bytes to 4 ASCII characters.
+
+  for (idx = 0; idx < max; idx++) {
+    if ((idx % 3 === 0) && idx) {
+      result += map[(bits >> 18) & 0x3F];
+      result += map[(bits >> 12) & 0x3F];
+      result += map[(bits >> 6) & 0x3F];
+      result += map[bits & 0x3F];
+    }
+
+    bits = (bits << 8) + object[idx];
+  }
+
+  // Dump tail
+
+  tail = max % 3;
+
+  if (tail === 0) {
+    result += map[(bits >> 18) & 0x3F];
+    result += map[(bits >> 12) & 0x3F];
+    result += map[(bits >> 6) & 0x3F];
+    result += map[bits & 0x3F];
+  } else if (tail === 2) {
+    result += map[(bits >> 10) & 0x3F];
+    result += map[(bits >> 4) & 0x3F];
+    result += map[(bits << 2) & 0x3F];
+    result += map[64];
+  } else if (tail === 1) {
+    result += map[(bits >> 2) & 0x3F];
+    result += map[(bits << 4) & 0x3F];
+    result += map[64];
+    result += map[64];
+  }
+
+  return result;
+}
+
+function isBinary(obj) {
+  return Object.prototype.toString.call(obj) ===  '[object Uint8Array]';
+}
+
+var binary = new type('tag:yaml.org,2002:binary', {
+  kind: 'scalar',
+  resolve: resolveYamlBinary,
+  construct: constructYamlBinary,
+  predicate: isBinary,
+  represent: representYamlBinary
+});
+
+var _hasOwnProperty$3 = Object.prototype.hasOwnProperty;
+var _toString$2       = Object.prototype.toString;
+
+function resolveYamlOmap(data) {
+  if (data === null) return true;
+
+  var objectKeys = [], index, length, pair, pairKey, pairHasKey,
+      object = data;
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    pair = object[index];
+    pairHasKey = false;
+
+    if (_toString$2.call(pair) !== '[object Object]') return false;
+
+    for (pairKey in pair) {
+      if (_hasOwnProperty$3.call(pair, pairKey)) {
+        if (!pairHasKey) pairHasKey = true;
+        else return false;
+      }
+    }
+
+    if (!pairHasKey) return false;
+
+    if (objectKeys.indexOf(pairKey) === -1) objectKeys.push(pairKey);
+    else return false;
+  }
+
+  return true;
+}
+
+function constructYamlOmap(data) {
+  return data !== null ? data : [];
+}
+
+var omap = new type('tag:yaml.org,2002:omap', {
+  kind: 'sequence',
+  resolve: resolveYamlOmap,
+  construct: constructYamlOmap
+});
+
+var _toString$1 = Object.prototype.toString;
+
+function resolveYamlPairs(data) {
+  if (data === null) return true;
+
+  var index, length, pair, keys, result,
+      object = data;
+
+  result = new Array(object.length);
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    pair = object[index];
+
+    if (_toString$1.call(pair) !== '[object Object]') return false;
+
+    keys = Object.keys(pair);
+
+    if (keys.length !== 1) return false;
+
+    result[index] = [ keys[0], pair[keys[0]] ];
+  }
+
+  return true;
+}
+
+function constructYamlPairs(data) {
+  if (data === null) return [];
+
+  var index, length, pair, keys, result,
+      object = data;
+
+  result = new Array(object.length);
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    pair = object[index];
+
+    keys = Object.keys(pair);
+
+    result[index] = [ keys[0], pair[keys[0]] ];
+  }
+
+  return result;
+}
+
+var pairs = new type('tag:yaml.org,2002:pairs', {
+  kind: 'sequence',
+  resolve: resolveYamlPairs,
+  construct: constructYamlPairs
+});
+
+var _hasOwnProperty$2 = Object.prototype.hasOwnProperty;
+
+function resolveYamlSet(data) {
+  if (data === null) return true;
+
+  var key, object = data;
+
+  for (key in object) {
+    if (_hasOwnProperty$2.call(object, key)) {
+      if (object[key] !== null) return false;
+    }
+  }
+
+  return true;
+}
+
+function constructYamlSet(data) {
+  return data !== null ? data : {};
+}
+
+var set = new type('tag:yaml.org,2002:set', {
+  kind: 'mapping',
+  resolve: resolveYamlSet,
+  construct: constructYamlSet
+});
+
+var _default = core.extend({
+  implicit: [
+    timestamp,
+    merge
+  ],
+  explicit: [
+    binary,
+    omap,
+    pairs,
+    set
+  ]
+});
+
+/*eslint-disable max-len,no-use-before-define*/
+
+
+
+
+
+
+
+var _hasOwnProperty$1 = Object.prototype.hasOwnProperty;
+
+
+var CONTEXT_FLOW_IN   = 1;
+var CONTEXT_FLOW_OUT  = 2;
+var CONTEXT_BLOCK_IN  = 3;
+var CONTEXT_BLOCK_OUT = 4;
+
+
+var CHOMPING_CLIP  = 1;
+var CHOMPING_STRIP = 2;
+var CHOMPING_KEEP  = 3;
+
+
+var PATTERN_NON_PRINTABLE         = /[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x84\x86-\x9F\uFFFE\uFFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]/;
+var PATTERN_NON_ASCII_LINE_BREAKS = /[\x85\u2028\u2029]/;
+var PATTERN_FLOW_INDICATORS       = /[,\[\]\{\}]/;
+var PATTERN_TAG_HANDLE            = /^(?:!|!!|![a-z\-]+!)$/i;
+var PATTERN_TAG_URI               = /^(?:!|[^,\[\]\{\}])(?:%[0-9a-f]{2}|[0-9a-z\-#;\/\?:@&=\+\$,_\.!~\*'\(\)\[\]])*$/i;
+
+
+function _class(obj) { return Object.prototype.toString.call(obj); }
+
+function is_EOL(c) {
+  return (c === 0x0A/* LF */) || (c === 0x0D/* CR */);
+}
+
+function is_WHITE_SPACE(c) {
+  return (c === 0x09/* Tab */) || (c === 0x20/* Space */);
+}
+
+function is_WS_OR_EOL(c) {
+  return (c === 0x09/* Tab */) ||
+         (c === 0x20/* Space */) ||
+         (c === 0x0A/* LF */) ||
+         (c === 0x0D/* CR */);
+}
+
+function is_FLOW_INDICATOR(c) {
+  return c === 0x2C/* , */ ||
+         c === 0x5B/* [ */ ||
+         c === 0x5D/* ] */ ||
+         c === 0x7B/* { */ ||
+         c === 0x7D/* } */;
+}
+
+function fromHexCode(c) {
+  var lc;
+
+  if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) {
+    return c - 0x30;
+  }
+
+  /*eslint-disable no-bitwise*/
+  lc = c | 0x20;
+
+  if ((0x61/* a */ <= lc) && (lc <= 0x66/* f */)) {
+    return lc - 0x61 + 10;
+  }
+
+  return -1;
+}
+
+function escapedHexLen(c) {
+  if (c === 0x78/* x */) { return 2; }
+  if (c === 0x75/* u */) { return 4; }
+  if (c === 0x55/* U */) { return 8; }
+  return 0;
+}
+
+function fromDecimalCode(c) {
+  if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) {
+    return c - 0x30;
+  }
+
+  return -1;
+}
+
+function simpleEscapeSequence(c) {
+  /* eslint-disable indent */
+  return (c === 0x30/* 0 */) ? '\x00' :
+        (c === 0x61/* a */) ? '\x07' :
+        (c === 0x62/* b */) ? '\x08' :
+        (c === 0x74/* t */) ? '\x09' :
+        (c === 0x09/* Tab */) ? '\x09' :
+        (c === 0x6E/* n */) ? '\x0A' :
+        (c === 0x76/* v */) ? '\x0B' :
+        (c === 0x66/* f */) ? '\x0C' :
+        (c === 0x72/* r */) ? '\x0D' :
+        (c === 0x65/* e */) ? '\x1B' :
+        (c === 0x20/* Space */) ? ' ' :
+        (c === 0x22/* " */) ? '\x22' :
+        (c === 0x2F/* / */) ? '/' :
+        (c === 0x5C/* \ */) ? '\x5C' :
+        (c === 0x4E/* N */) ? '\x85' :
+        (c === 0x5F/* _ */) ? '\xA0' :
+        (c === 0x4C/* L */) ? '\u2028' :
+        (c === 0x50/* P */) ? '\u2029' : '';
+}
+
+function charFromCodepoint(c) {
+  if (c <= 0xFFFF) {
+    return String.fromCharCode(c);
+  }
+  // Encode UTF-16 surrogate pair
+  // https://en.wikipedia.org/wiki/UTF-16#Code_points_U.2B010000_to_U.2B10FFFF
+  return String.fromCharCode(
+    ((c - 0x010000) >> 10) + 0xD800,
+    ((c - 0x010000) & 0x03FF) + 0xDC00
+  );
+}
+
+// set a property of a literal object, while protecting against prototype pollution,
+// see https://github.com/nodeca/js-yaml/issues/164 for more details
+function setProperty(object, key, value) {
+  // used for this specific key only because Object.defineProperty is slow
+  if (key === '__proto__') {
+    Object.defineProperty(object, key, {
+      configurable: true,
+      enumerable: true,
+      writable: true,
+      value: value
+    });
+  } else {
+    object[key] = value;
+  }
+}
+
+var simpleEscapeCheck = new Array(256); // integer, for fast access
+var simpleEscapeMap = new Array(256);
+for (var i = 0; i < 256; i++) {
+  simpleEscapeCheck[i] = simpleEscapeSequence(i) ? 1 : 0;
+  simpleEscapeMap[i] = simpleEscapeSequence(i);
+}
+
+
+function State$1(input, options) {
+  this.input = input;
+
+  this.filename  = options['filename']  || null;
+  this.schema    = options['schema']    || _default;
+  this.onWarning = options['onWarning'] || null;
+  // (Hidden) Remove? makes the loader to expect YAML 1.1 documents
+  // if such documents have no explicit %YAML directive
+  this.legacy    = options['legacy']    || false;
+
+  this.json      = options['json']      || false;
+  this.listener  = options['listener']  || null;
+
+  this.implicitTypes = this.schema.compiledImplicit;
+  this.typeMap       = this.schema.compiledTypeMap;
+
+  this.length     = input.length;
+  this.position   = 0;
+  this.line       = 0;
+  this.lineStart  = 0;
+  this.lineIndent = 0;
+
+  // position of first leading tab in the current line,
+  // used to make sure there are no tabs in the indentation
+  this.firstTabInLine = -1;
+
+  this.documents = [];
+
+  /*
+  this.version;
+  this.checkLineBreaks;
+  this.tagMap;
+  this.anchorMap;
+  this.tag;
+  this.anchor;
+  this.kind;
+  this.result;*/
+
+}
+
+
+function generateError(state, message) {
+  var mark = {
+    name:     state.filename,
+    buffer:   state.input.slice(0, -1), // omit trailing \0
+    position: state.position,
+    line:     state.line,
+    column:   state.position - state.lineStart
+  };
+
+  mark.snippet = snippet(mark);
+
+  return new exception(message, mark);
+}
+
+function throwError(state, message) {
+  throw generateError(state, message);
+}
+
+function throwWarning(state, message) {
+  if (state.onWarning) {
+    state.onWarning.call(null, generateError(state, message));
+  }
+}
+
+
+var directiveHandlers = {
+
+  YAML: function handleYamlDirective(state, name, args) {
+
+    var match, major, minor;
+
+    if (state.version !== null) {
+      throwError(state, 'duplication of %YAML directive');
+    }
+
+    if (args.length !== 1) {
+      throwError(state, 'YAML directive accepts exactly one argument');
+    }
+
+    match = /^([0-9]+)\.([0-9]+)$/.exec(args[0]);
+
+    if (match === null) {
+      throwError(state, 'ill-formed argument of the YAML directive');
+    }
+
+    major = parseInt(match[1], 10);
+    minor = parseInt(match[2], 10);
+
+    if (major !== 1) {
+      throwError(state, 'unacceptable YAML version of the document');
+    }
+
+    state.version = args[0];
+    state.checkLineBreaks = (minor < 2);
+
+    if (minor !== 1 && minor !== 2) {
+      throwWarning(state, 'unsupported YAML version of the document');
+    }
+  },
+
+  TAG: function handleTagDirective(state, name, args) {
+
+    var handle, prefix;
+
+    if (args.length !== 2) {
+      throwError(state, 'TAG directive accepts exactly two arguments');
+    }
+
+    handle = args[0];
+    prefix = args[1];
+
+    if (!PATTERN_TAG_HANDLE.test(handle)) {
+      throwError(state, 'ill-formed tag handle (first argument) of the TAG directive');
+    }
+
+    if (_hasOwnProperty$1.call(state.tagMap, handle)) {
+      throwError(state, 'there is a previously declared suffix for "' + handle + '" tag handle');
+    }
+
+    if (!PATTERN_TAG_URI.test(prefix)) {
+      throwError(state, 'ill-formed tag prefix (second argument) of the TAG directive');
+    }
+
+    try {
+      prefix = decodeURIComponent(prefix);
+    } catch (err) {
+      throwError(state, 'tag prefix is malformed: ' + prefix);
+    }
+
+    state.tagMap[handle] = prefix;
+  }
+};
+
+
+function captureSegment(state, start, end, checkJson) {
+  var _position, _length, _character, _result;
+
+  if (start < end) {
+    _result = state.input.slice(start, end);
+
+    if (checkJson) {
+      for (_position = 0, _length = _result.length; _position < _length; _position += 1) {
+        _character = _result.charCodeAt(_position);
+        if (!(_character === 0x09 ||
+              (0x20 <= _character && _character <= 0x10FFFF))) {
+          throwError(state, 'expected valid JSON character');
+        }
+      }
+    } else if (PATTERN_NON_PRINTABLE.test(_result)) {
+      throwError(state, 'the stream contains non-printable characters');
+    }
+
+    state.result += _result;
+  }
+}
+
+function mergeMappings(state, destination, source, overridableKeys) {
+  var sourceKeys, key, index, quantity;
+
+  if (!common.isObject(source)) {
+    throwError(state, 'cannot merge mappings; the provided source object is unacceptable');
+  }
+
+  sourceKeys = Object.keys(source);
+
+  for (index = 0, quantity = sourceKeys.length; index < quantity; index += 1) {
+    key = sourceKeys[index];
+
+    if (!_hasOwnProperty$1.call(destination, key)) {
+      setProperty(destination, key, source[key]);
+      overridableKeys[key] = true;
+    }
+  }
+}
+
+function storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode,
+  startLine, startLineStart, startPos) {
+
+  var index, quantity;
+
+  // The output is a plain object here, so keys can only be strings.
+  // We need to convert keyNode to a string, but doing so can hang the process
+  // (deeply nested arrays that explode exponentially using aliases).
+  if (Array.isArray(keyNode)) {
+    keyNode = Array.prototype.slice.call(keyNode);
+
+    for (index = 0, quantity = keyNode.length; index < quantity; index += 1) {
+      if (Array.isArray(keyNode[index])) {
+        throwError(state, 'nested arrays are not supported inside keys');
+      }
+
+      if (typeof keyNode === 'object' && _class(keyNode[index]) === '[object Object]') {
+        keyNode[index] = '[object Object]';
+      }
+    }
+  }
+
+  // Avoid code execution in load() via toString property
+  // (still use its own toString for arrays, timestamps,
+  // and whatever user schema extensions happen to have @@toStringTag)
+  if (typeof keyNode === 'object' && _class(keyNode) === '[object Object]') {
+    keyNode = '[object Object]';
+  }
+
+
+  keyNode = String(keyNode);
+
+  if (_result === null) {
+    _result = {};
+  }
+
+  if (keyTag === 'tag:yaml.org,2002:merge') {
+    if (Array.isArray(valueNode)) {
+      for (index = 0, quantity = valueNode.length; index < quantity; index += 1) {
+        mergeMappings(state, _result, valueNode[index], overridableKeys);
+      }
+    } else {
+      mergeMappings(state, _result, valueNode, overridableKeys);
+    }
+  } else {
+    if (!state.json &&
+        !_hasOwnProperty$1.call(overridableKeys, keyNode) &&
+        _hasOwnProperty$1.call(_result, keyNode)) {
+      state.line = startLine || state.line;
+      state.lineStart = startLineStart || state.lineStart;
+      state.position = startPos || state.position;
+      throwError(state, 'duplicated mapping key');
+    }
+
+    setProperty(_result, keyNode, valueNode);
+    delete overridableKeys[keyNode];
+  }
+
+  return _result;
+}
+
+function readLineBreak(state) {
+  var ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch === 0x0A/* LF */) {
+    state.position++;
+  } else if (ch === 0x0D/* CR */) {
+    state.position++;
+    if (state.input.charCodeAt(state.position) === 0x0A/* LF */) {
+      state.position++;
+    }
+  } else {
+    throwError(state, 'a line break is expected');
+  }
+
+  state.line += 1;
+  state.lineStart = state.position;
+  state.firstTabInLine = -1;
+}
+
+function skipSeparationSpace(state, allowComments, checkIndent) {
+  var lineBreaks = 0,
+      ch = state.input.charCodeAt(state.position);
+
+  while (ch !== 0) {
+    while (is_WHITE_SPACE(ch)) {
+      if (ch === 0x09/* Tab */ && state.firstTabInLine === -1) {
+        state.firstTabInLine = state.position;
+      }
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    if (allowComments && ch === 0x23/* # */) {
+      do {
+        ch = state.input.charCodeAt(++state.position);
+      } while (ch !== 0x0A/* LF */ && ch !== 0x0D/* CR */ && ch !== 0);
+    }
+
+    if (is_EOL(ch)) {
+      readLineBreak(state);
+
+      ch = state.input.charCodeAt(state.position);
+      lineBreaks++;
+      state.lineIndent = 0;
+
+      while (ch === 0x20/* Space */) {
+        state.lineIndent++;
+        ch = state.input.charCodeAt(++state.position);
+      }
+    } else {
+      break;
+    }
+  }
+
+  if (checkIndent !== -1 && lineBreaks !== 0 && state.lineIndent < checkIndent) {
+    throwWarning(state, 'deficient indentation');
+  }
+
+  return lineBreaks;
+}
+
+function testDocumentSeparator(state) {
+  var _position = state.position,
+      ch;
+
+  ch = state.input.charCodeAt(_position);
+
+  // Condition state.position === state.lineStart is tested
+  // in parent on each call, for efficiency. No needs to test here again.
+  if ((ch === 0x2D/* - */ || ch === 0x2E/* . */) &&
+      ch === state.input.charCodeAt(_position + 1) &&
+      ch === state.input.charCodeAt(_position + 2)) {
+
+    _position += 3;
+
+    ch = state.input.charCodeAt(_position);
+
+    if (ch === 0 || is_WS_OR_EOL(ch)) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+function writeFoldedLines(state, count) {
+  if (count === 1) {
+    state.result += ' ';
+  } else if (count > 1) {
+    state.result += common.repeat('\n', count - 1);
+  }
+}
+
+
+function readPlainScalar(state, nodeIndent, withinFlowCollection) {
+  var preceding,
+      following,
+      captureStart,
+      captureEnd,
+      hasPendingContent,
+      _line,
+      _lineStart,
+      _lineIndent,
+      _kind = state.kind,
+      _result = state.result,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (is_WS_OR_EOL(ch)      ||
+      is_FLOW_INDICATOR(ch) ||
+      ch === 0x23/* # */    ||
+      ch === 0x26/* & */    ||
+      ch === 0x2A/* * */    ||
+      ch === 0x21/* ! */    ||
+      ch === 0x7C/* | */    ||
+      ch === 0x3E/* > */    ||
+      ch === 0x27/* ' */    ||
+      ch === 0x22/* " */    ||
+      ch === 0x25/* % */    ||
+      ch === 0x40/* @ */    ||
+      ch === 0x60/* ` */) {
+    return false;
+  }
+
+  if (ch === 0x3F/* ? */ || ch === 0x2D/* - */) {
+    following = state.input.charCodeAt(state.position + 1);
+
+    if (is_WS_OR_EOL(following) ||
+        withinFlowCollection && is_FLOW_INDICATOR(following)) {
+      return false;
+    }
+  }
+
+  state.kind = 'scalar';
+  state.result = '';
+  captureStart = captureEnd = state.position;
+  hasPendingContent = false;
+
+  while (ch !== 0) {
+    if (ch === 0x3A/* : */) {
+      following = state.input.charCodeAt(state.position + 1);
+
+      if (is_WS_OR_EOL(following) ||
+          withinFlowCollection && is_FLOW_INDICATOR(following)) {
+        break;
+      }
+
+    } else if (ch === 0x23/* # */) {
+      preceding = state.input.charCodeAt(state.position - 1);
+
+      if (is_WS_OR_EOL(preceding)) {
+        break;
+      }
+
+    } else if ((state.position === state.lineStart && testDocumentSeparator(state)) ||
+               withinFlowCollection && is_FLOW_INDICATOR(ch)) {
+      break;
+
+    } else if (is_EOL(ch)) {
+      _line = state.line;
+      _lineStart = state.lineStart;
+      _lineIndent = state.lineIndent;
+      skipSeparationSpace(state, false, -1);
+
+      if (state.lineIndent >= nodeIndent) {
+        hasPendingContent = true;
+        ch = state.input.charCodeAt(state.position);
+        continue;
+      } else {
+        state.position = captureEnd;
+        state.line = _line;
+        state.lineStart = _lineStart;
+        state.lineIndent = _lineIndent;
+        break;
+      }
+    }
+
+    if (hasPendingContent) {
+      captureSegment(state, captureStart, captureEnd, false);
+      writeFoldedLines(state, state.line - _line);
+      captureStart = captureEnd = state.position;
+      hasPendingContent = false;
+    }
+
+    if (!is_WHITE_SPACE(ch)) {
+      captureEnd = state.position + 1;
+    }
+
+    ch = state.input.charCodeAt(++state.position);
+  }
+
+  captureSegment(state, captureStart, captureEnd, false);
+
+  if (state.result) {
+    return true;
+  }
+
+  state.kind = _kind;
+  state.result = _result;
+  return false;
+}
+
+function readSingleQuotedScalar(state, nodeIndent) {
+  var ch,
+      captureStart, captureEnd;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x27/* ' */) {
+    return false;
+  }
+
+  state.kind = 'scalar';
+  state.result = '';
+  state.position++;
+  captureStart = captureEnd = state.position;
+
+  while ((ch = state.input.charCodeAt(state.position)) !== 0) {
+    if (ch === 0x27/* ' */) {
+      captureSegment(state, captureStart, state.position, true);
+      ch = state.input.charCodeAt(++state.position);
+
+      if (ch === 0x27/* ' */) {
+        captureStart = state.position;
+        state.position++;
+        captureEnd = state.position;
+      } else {
+        return true;
+      }
+
+    } else if (is_EOL(ch)) {
+      captureSegment(state, captureStart, captureEnd, true);
+      writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
+      captureStart = captureEnd = state.position;
+
+    } else if (state.position === state.lineStart && testDocumentSeparator(state)) {
+      throwError(state, 'unexpected end of the document within a single quoted scalar');
+
+    } else {
+      state.position++;
+      captureEnd = state.position;
+    }
+  }
+
+  throwError(state, 'unexpected end of the stream within a single quoted scalar');
+}
+
+function readDoubleQuotedScalar(state, nodeIndent) {
+  var captureStart,
+      captureEnd,
+      hexLength,
+      hexResult,
+      tmp,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x22/* " */) {
+    return false;
+  }
+
+  state.kind = 'scalar';
+  state.result = '';
+  state.position++;
+  captureStart = captureEnd = state.position;
+
+  while ((ch = state.input.charCodeAt(state.position)) !== 0) {
+    if (ch === 0x22/* " */) {
+      captureSegment(state, captureStart, state.position, true);
+      state.position++;
+      return true;
+
+    } else if (ch === 0x5C/* \ */) {
+      captureSegment(state, captureStart, state.position, true);
+      ch = state.input.charCodeAt(++state.position);
+
+      if (is_EOL(ch)) {
+        skipSeparationSpace(state, false, nodeIndent);
+
+        // TODO: rework to inline fn with no type cast?
+      } else if (ch < 256 && simpleEscapeCheck[ch]) {
+        state.result += simpleEscapeMap[ch];
+        state.position++;
+
+      } else if ((tmp = escapedHexLen(ch)) > 0) {
+        hexLength = tmp;
+        hexResult = 0;
+
+        for (; hexLength > 0; hexLength--) {
+          ch = state.input.charCodeAt(++state.position);
+
+          if ((tmp = fromHexCode(ch)) >= 0) {
+            hexResult = (hexResult << 4) + tmp;
+
+          } else {
+            throwError(state, 'expected hexadecimal character');
+          }
+        }
+
+        state.result += charFromCodepoint(hexResult);
+
+        state.position++;
+
+      } else {
+        throwError(state, 'unknown escape sequence');
+      }
+
+      captureStart = captureEnd = state.position;
+
+    } else if (is_EOL(ch)) {
+      captureSegment(state, captureStart, captureEnd, true);
+      writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
+      captureStart = captureEnd = state.position;
+
+    } else if (state.position === state.lineStart && testDocumentSeparator(state)) {
+      throwError(state, 'unexpected end of the document within a double quoted scalar');
+
+    } else {
+      state.position++;
+      captureEnd = state.position;
+    }
+  }
+
+  throwError(state, 'unexpected end of the stream within a double quoted scalar');
+}
+
+function readFlowCollection(state, nodeIndent) {
+  var readNext = true,
+      _line,
+      _lineStart,
+      _pos,
+      _tag     = state.tag,
+      _result,
+      _anchor  = state.anchor,
+      following,
+      terminator,
+      isPair,
+      isExplicitPair,
+      isMapping,
+      overridableKeys = Object.create(null),
+      keyNode,
+      keyTag,
+      valueNode,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch === 0x5B/* [ */) {
+    terminator = 0x5D;/* ] */
+    isMapping = false;
+    _result = [];
+  } else if (ch === 0x7B/* { */) {
+    terminator = 0x7D;/* } */
+    isMapping = true;
+    _result = {};
+  } else {
+    return false;
+  }
+
+  if (state.anchor !== null) {
+    state.anchorMap[state.anchor] = _result;
+  }
+
+  ch = state.input.charCodeAt(++state.position);
+
+  while (ch !== 0) {
+    skipSeparationSpace(state, true, nodeIndent);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (ch === terminator) {
+      state.position++;
+      state.tag = _tag;
+      state.anchor = _anchor;
+      state.kind = isMapping ? 'mapping' : 'sequence';
+      state.result = _result;
+      return true;
+    } else if (!readNext) {
+      throwError(state, 'missed comma between flow collection entries');
+    } else if (ch === 0x2C/* , */) {
+      // "flow collection entries can never be completely empty", as per YAML 1.2, section 7.4
+      throwError(state, "expected the node content, but found ','");
+    }
+
+    keyTag = keyNode = valueNode = null;
+    isPair = isExplicitPair = false;
+
+    if (ch === 0x3F/* ? */) {
+      following = state.input.charCodeAt(state.position + 1);
+
+      if (is_WS_OR_EOL(following)) {
+        isPair = isExplicitPair = true;
+        state.position++;
+        skipSeparationSpace(state, true, nodeIndent);
+      }
+    }
+
+    _line = state.line; // Save the current line.
+    _lineStart = state.lineStart;
+    _pos = state.position;
+    composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
+    keyTag = state.tag;
+    keyNode = state.result;
+    skipSeparationSpace(state, true, nodeIndent);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if ((isExplicitPair || state.line === _line) && ch === 0x3A/* : */) {
+      isPair = true;
+      ch = state.input.charCodeAt(++state.position);
+      skipSeparationSpace(state, true, nodeIndent);
+      composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
+      valueNode = state.result;
+    }
+
+    if (isMapping) {
+      storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _line, _lineStart, _pos);
+    } else if (isPair) {
+      _result.push(storeMappingPair(state, null, overridableKeys, keyTag, keyNode, valueNode, _line, _lineStart, _pos));
+    } else {
+      _result.push(keyNode);
+    }
+
+    skipSeparationSpace(state, true, nodeIndent);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (ch === 0x2C/* , */) {
+      readNext = true;
+      ch = state.input.charCodeAt(++state.position);
+    } else {
+      readNext = false;
+    }
+  }
+
+  throwError(state, 'unexpected end of the stream within a flow collection');
+}
+
+function readBlockScalar(state, nodeIndent) {
+  var captureStart,
+      folding,
+      chomping       = CHOMPING_CLIP,
+      didReadContent = false,
+      detectedIndent = false,
+      textIndent     = nodeIndent,
+      emptyLines     = 0,
+      atMoreIndented = false,
+      tmp,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch === 0x7C/* | */) {
+    folding = false;
+  } else if (ch === 0x3E/* > */) {
+    folding = true;
+  } else {
+    return false;
+  }
+
+  state.kind = 'scalar';
+  state.result = '';
+
+  while (ch !== 0) {
+    ch = state.input.charCodeAt(++state.position);
+
+    if (ch === 0x2B/* + */ || ch === 0x2D/* - */) {
+      if (CHOMPING_CLIP === chomping) {
+        chomping = (ch === 0x2B/* + */) ? CHOMPING_KEEP : CHOMPING_STRIP;
+      } else {
+        throwError(state, 'repeat of a chomping mode identifier');
+      }
+
+    } else if ((tmp = fromDecimalCode(ch)) >= 0) {
+      if (tmp === 0) {
+        throwError(state, 'bad explicit indentation width of a block scalar; it cannot be less than one');
+      } else if (!detectedIndent) {
+        textIndent = nodeIndent + tmp - 1;
+        detectedIndent = true;
+      } else {
+        throwError(state, 'repeat of an indentation width identifier');
+      }
+
+    } else {
+      break;
+    }
+  }
+
+  if (is_WHITE_SPACE(ch)) {
+    do { ch = state.input.charCodeAt(++state.position); }
+    while (is_WHITE_SPACE(ch));
+
+    if (ch === 0x23/* # */) {
+      do { ch = state.input.charCodeAt(++state.position); }
+      while (!is_EOL(ch) && (ch !== 0));
+    }
+  }
+
+  while (ch !== 0) {
+    readLineBreak(state);
+    state.lineIndent = 0;
+
+    ch = state.input.charCodeAt(state.position);
+
+    while ((!detectedIndent || state.lineIndent < textIndent) &&
+           (ch === 0x20/* Space */)) {
+      state.lineIndent++;
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    if (!detectedIndent && state.lineIndent > textIndent) {
+      textIndent = state.lineIndent;
+    }
+
+    if (is_EOL(ch)) {
+      emptyLines++;
+      continue;
+    }
+
+    // End of the scalar.
+    if (state.lineIndent < textIndent) {
+
+      // Perform the chomping.
+      if (chomping === CHOMPING_KEEP) {
+        state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
+      } else if (chomping === CHOMPING_CLIP) {
+        if (didReadContent) { // i.e. only if the scalar is not empty.
+          state.result += '\n';
+        }
+      }
+
+      // Break this `while` cycle and go to the funciton's epilogue.
+      break;
+    }
+
+    // Folded style: use fancy rules to handle line breaks.
+    if (folding) {
+
+      // Lines starting with white space characters (more-indented lines) are not folded.
+      if (is_WHITE_SPACE(ch)) {
+        atMoreIndented = true;
+        // except for the first content line (cf. Example 8.1)
+        state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
+
+      // End of more-indented block.
+      } else if (atMoreIndented) {
+        atMoreIndented = false;
+        state.result += common.repeat('\n', emptyLines + 1);
+
+      // Just one line break - perceive as the same line.
+      } else if (emptyLines === 0) {
+        if (didReadContent) { // i.e. only if we have already read some scalar content.
+          state.result += ' ';
+        }
+
+      // Several line breaks - perceive as different lines.
+      } else {
+        state.result += common.repeat('\n', emptyLines);
+      }
+
+    // Literal style: just add exact number of line breaks between content lines.
+    } else {
+      // Keep all line breaks except the header line break.
+      state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
+    }
+
+    didReadContent = true;
+    detectedIndent = true;
+    emptyLines = 0;
+    captureStart = state.position;
+
+    while (!is_EOL(ch) && (ch !== 0)) {
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    captureSegment(state, captureStart, state.position, false);
+  }
+
+  return true;
+}
+
+function readBlockSequence(state, nodeIndent) {
+  var _line,
+      _tag      = state.tag,
+      _anchor   = state.anchor,
+      _result   = [],
+      following,
+      detected  = false,
+      ch;
+
+  // there is a leading tab before this token, so it can't be a block sequence/mapping;
+  // it can still be flow sequence/mapping or a scalar
+  if (state.firstTabInLine !== -1) return false;
+
+  if (state.anchor !== null) {
+    state.anchorMap[state.anchor] = _result;
+  }
+
+  ch = state.input.charCodeAt(state.position);
+
+  while (ch !== 0) {
+    if (state.firstTabInLine !== -1) {
+      state.position = state.firstTabInLine;
+      throwError(state, 'tab characters must not be used in indentation');
+    }
+
+    if (ch !== 0x2D/* - */) {
+      break;
+    }
+
+    following = state.input.charCodeAt(state.position + 1);
+
+    if (!is_WS_OR_EOL(following)) {
+      break;
+    }
+
+    detected = true;
+    state.position++;
+
+    if (skipSeparationSpace(state, true, -1)) {
+      if (state.lineIndent <= nodeIndent) {
+        _result.push(null);
+        ch = state.input.charCodeAt(state.position);
+        continue;
+      }
+    }
+
+    _line = state.line;
+    composeNode(state, nodeIndent, CONTEXT_BLOCK_IN, false, true);
+    _result.push(state.result);
+    skipSeparationSpace(state, true, -1);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if ((state.line === _line || state.lineIndent > nodeIndent) && (ch !== 0)) {
+      throwError(state, 'bad indentation of a sequence entry');
+    } else if (state.lineIndent < nodeIndent) {
+      break;
+    }
+  }
+
+  if (detected) {
+    state.tag = _tag;
+    state.anchor = _anchor;
+    state.kind = 'sequence';
+    state.result = _result;
+    return true;
+  }
+  return false;
+}
+
+function readBlockMapping(state, nodeIndent, flowIndent) {
+  var following,
+      allowCompact,
+      _line,
+      _keyLine,
+      _keyLineStart,
+      _keyPos,
+      _tag          = state.tag,
+      _anchor       = state.anchor,
+      _result       = {},
+      overridableKeys = Object.create(null),
+      keyTag        = null,
+      keyNode       = null,
+      valueNode     = null,
+      atExplicitKey = false,
+      detected      = false,
+      ch;
+
+  // there is a leading tab before this token, so it can't be a block sequence/mapping;
+  // it can still be flow sequence/mapping or a scalar
+  if (state.firstTabInLine !== -1) return false;
+
+  if (state.anchor !== null) {
+    state.anchorMap[state.anchor] = _result;
+  }
+
+  ch = state.input.charCodeAt(state.position);
+
+  while (ch !== 0) {
+    if (!atExplicitKey && state.firstTabInLine !== -1) {
+      state.position = state.firstTabInLine;
+      throwError(state, 'tab characters must not be used in indentation');
+    }
+
+    following = state.input.charCodeAt(state.position + 1);
+    _line = state.line; // Save the current line.
+
+    //
+    // Explicit notation case. There are two separate blocks:
+    // first for the key (denoted by "?") and second for the value (denoted by ":")
+    //
+    if ((ch === 0x3F/* ? */ || ch === 0x3A/* : */) && is_WS_OR_EOL(following)) {
+
+      if (ch === 0x3F/* ? */) {
+        if (atExplicitKey) {
+          storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
+          keyTag = keyNode = valueNode = null;
+        }
+
+        detected = true;
+        atExplicitKey = true;
+        allowCompact = true;
+
+      } else if (atExplicitKey) {
+        // i.e. 0x3A/* : */ === character after the explicit key.
+        atExplicitKey = false;
+        allowCompact = true;
+
+      } else {
+        throwError(state, 'incomplete explicit mapping pair; a key node is missed; or followed by a non-tabulated empty line');
+      }
+
+      state.position += 1;
+      ch = following;
+
+    //
+    // Implicit notation case. Flow-style node as the key first, then ":", and the value.
+    //
+    } else {
+      _keyLine = state.line;
+      _keyLineStart = state.lineStart;
+      _keyPos = state.position;
+
+      if (!composeNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true)) {
+        // Neither implicit nor explicit notation.
+        // Reading is done. Go to the epilogue.
+        break;
+      }
+
+      if (state.line === _line) {
+        ch = state.input.charCodeAt(state.position);
+
+        while (is_WHITE_SPACE(ch)) {
+          ch = state.input.charCodeAt(++state.position);
+        }
+
+        if (ch === 0x3A/* : */) {
+          ch = state.input.charCodeAt(++state.position);
+
+          if (!is_WS_OR_EOL(ch)) {
+            throwError(state, 'a whitespace character is expected after the key-value separator within a block mapping');
+          }
+
+          if (atExplicitKey) {
+            storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
+            keyTag = keyNode = valueNode = null;
+          }
+
+          detected = true;
+          atExplicitKey = false;
+          allowCompact = false;
+          keyTag = state.tag;
+          keyNode = state.result;
+
+        } else if (detected) {
+          throwError(state, 'can not read an implicit mapping pair; a colon is missed');
+
+        } else {
+          state.tag = _tag;
+          state.anchor = _anchor;
+          return true; // Keep the result of `composeNode`.
+        }
+
+      } else if (detected) {
+        throwError(state, 'can not read a block mapping entry; a multiline key may not be an implicit key');
+
+      } else {
+        state.tag = _tag;
+        state.anchor = _anchor;
+        return true; // Keep the result of `composeNode`.
+      }
+    }
+
+    //
+    // Common reading code for both explicit and implicit notations.
+    //
+    if (state.line === _line || state.lineIndent > nodeIndent) {
+      if (atExplicitKey) {
+        _keyLine = state.line;
+        _keyLineStart = state.lineStart;
+        _keyPos = state.position;
+      }
+
+      if (composeNode(state, nodeIndent, CONTEXT_BLOCK_OUT, true, allowCompact)) {
+        if (atExplicitKey) {
+          keyNode = state.result;
+        } else {
+          valueNode = state.result;
+        }
+      }
+
+      if (!atExplicitKey) {
+        storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _keyLine, _keyLineStart, _keyPos);
+        keyTag = keyNode = valueNode = null;
+      }
+
+      skipSeparationSpace(state, true, -1);
+      ch = state.input.charCodeAt(state.position);
+    }
+
+    if ((state.line === _line || state.lineIndent > nodeIndent) && (ch !== 0)) {
+      throwError(state, 'bad indentation of a mapping entry');
+    } else if (state.lineIndent < nodeIndent) {
+      break;
+    }
+  }
+
+  //
+  // Epilogue.
+  //
+
+  // Special case: last mapping's node contains only the key in explicit notation.
+  if (atExplicitKey) {
+    storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
+  }
+
+  // Expose the resulting mapping.
+  if (detected) {
+    state.tag = _tag;
+    state.anchor = _anchor;
+    state.kind = 'mapping';
+    state.result = _result;
+  }
+
+  return detected;
+}
+
+function readTagProperty(state) {
+  var _position,
+      isVerbatim = false,
+      isNamed    = false,
+      tagHandle,
+      tagName,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x21/* ! */) return false;
+
+  if (state.tag !== null) {
+    throwError(state, 'duplication of a tag property');
+  }
+
+  ch = state.input.charCodeAt(++state.position);
+
+  if (ch === 0x3C/* < */) {
+    isVerbatim = true;
+    ch = state.input.charCodeAt(++state.position);
+
+  } else if (ch === 0x21/* ! */) {
+    isNamed = true;
+    tagHandle = '!!';
+    ch = state.input.charCodeAt(++state.position);
+
+  } else {
+    tagHandle = '!';
+  }
+
+  _position = state.position;
+
+  if (isVerbatim) {
+    do { ch = state.input.charCodeAt(++state.position); }
+    while (ch !== 0 && ch !== 0x3E/* > */);
+
+    if (state.position < state.length) {
+      tagName = state.input.slice(_position, state.position);
+      ch = state.input.charCodeAt(++state.position);
+    } else {
+      throwError(state, 'unexpected end of the stream within a verbatim tag');
+    }
+  } else {
+    while (ch !== 0 && !is_WS_OR_EOL(ch)) {
+
+      if (ch === 0x21/* ! */) {
+        if (!isNamed) {
+          tagHandle = state.input.slice(_position - 1, state.position + 1);
+
+          if (!PATTERN_TAG_HANDLE.test(tagHandle)) {
+            throwError(state, 'named tag handle cannot contain such characters');
+          }
+
+          isNamed = true;
+          _position = state.position + 1;
+        } else {
+          throwError(state, 'tag suffix cannot contain exclamation marks');
+        }
+      }
+
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    tagName = state.input.slice(_position, state.position);
+
+    if (PATTERN_FLOW_INDICATORS.test(tagName)) {
+      throwError(state, 'tag suffix cannot contain flow indicator characters');
+    }
+  }
+
+  if (tagName && !PATTERN_TAG_URI.test(tagName)) {
+    throwError(state, 'tag name cannot contain such characters: ' + tagName);
+  }
+
+  try {
+    tagName = decodeURIComponent(tagName);
+  } catch (err) {
+    throwError(state, 'tag name is malformed: ' + tagName);
+  }
+
+  if (isVerbatim) {
+    state.tag = tagName;
+
+  } else if (_hasOwnProperty$1.call(state.tagMap, tagHandle)) {
+    state.tag = state.tagMap[tagHandle] + tagName;
+
+  } else if (tagHandle === '!') {
+    state.tag = '!' + tagName;
+
+  } else if (tagHandle === '!!') {
+    state.tag = 'tag:yaml.org,2002:' + tagName;
+
+  } else {
+    throwError(state, 'undeclared tag handle "' + tagHandle + '"');
+  }
+
+  return true;
+}
+
+function readAnchorProperty(state) {
+  var _position,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x26/* & */) return false;
+
+  if (state.anchor !== null) {
+    throwError(state, 'duplication of an anchor property');
+  }
+
+  ch = state.input.charCodeAt(++state.position);
+  _position = state.position;
+
+  while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {
+    ch = state.input.charCodeAt(++state.position);
+  }
+
+  if (state.position === _position) {
+    throwError(state, 'name of an anchor node must contain at least one character');
+  }
+
+  state.anchor = state.input.slice(_position, state.position);
+  return true;
+}
+
+function readAlias(state) {
+  var _position, alias,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x2A/* * */) return false;
+
+  ch = state.input.charCodeAt(++state.position);
+  _position = state.position;
+
+  while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {
+    ch = state.input.charCodeAt(++state.position);
+  }
+
+  if (state.position === _position) {
+    throwError(state, 'name of an alias node must contain at least one character');
+  }
+
+  alias = state.input.slice(_position, state.position);
+
+  if (!_hasOwnProperty$1.call(state.anchorMap, alias)) {
+    throwError(state, 'unidentified alias "' + alias + '"');
+  }
+
+  state.result = state.anchorMap[alias];
+  skipSeparationSpace(state, true, -1);
+  return true;
+}
+
+function composeNode(state, parentIndent, nodeContext, allowToSeek, allowCompact) {
+  var allowBlockStyles,
+      allowBlockScalars,
+      allowBlockCollections,
+      indentStatus = 1, // 1: this>parent, 0: this=parent, -1: this<parent
+      atNewLine  = false,
+      hasContent = false,
+      typeIndex,
+      typeQuantity,
+      typeList,
+      type,
+      flowIndent,
+      blockIndent;
+
+  if (state.listener !== null) {
+    state.listener('open', state);
+  }
+
+  state.tag    = null;
+  state.anchor = null;
+  state.kind   = null;
+  state.result = null;
+
+  allowBlockStyles = allowBlockScalars = allowBlockCollections =
+    CONTEXT_BLOCK_OUT === nodeContext ||
+    CONTEXT_BLOCK_IN  === nodeContext;
+
+  if (allowToSeek) {
+    if (skipSeparationSpace(state, true, -1)) {
+      atNewLine = true;
+
+      if (state.lineIndent > parentIndent) {
+        indentStatus = 1;
+      } else if (state.lineIndent === parentIndent) {
+        indentStatus = 0;
+      } else if (state.lineIndent < parentIndent) {
+        indentStatus = -1;
+      }
+    }
+  }
+
+  if (indentStatus === 1) {
+    while (readTagProperty(state) || readAnchorProperty(state)) {
+      if (skipSeparationSpace(state, true, -1)) {
+        atNewLine = true;
+        allowBlockCollections = allowBlockStyles;
+
+        if (state.lineIndent > parentIndent) {
+          indentStatus = 1;
+        } else if (state.lineIndent === parentIndent) {
+          indentStatus = 0;
+        } else if (state.lineIndent < parentIndent) {
+          indentStatus = -1;
+        }
+      } else {
+        allowBlockCollections = false;
+      }
+    }
+  }
+
+  if (allowBlockCollections) {
+    allowBlockCollections = atNewLine || allowCompact;
+  }
+
+  if (indentStatus === 1 || CONTEXT_BLOCK_OUT === nodeContext) {
+    if (CONTEXT_FLOW_IN === nodeContext || CONTEXT_FLOW_OUT === nodeContext) {
+      flowIndent = parentIndent;
+    } else {
+      flowIndent = parentIndent + 1;
+    }
+
+    blockIndent = state.position - state.lineStart;
+
+    if (indentStatus === 1) {
+      if (allowBlockCollections &&
+          (readBlockSequence(state, blockIndent) ||
+           readBlockMapping(state, blockIndent, flowIndent)) ||
+          readFlowCollection(state, flowIndent)) {
+        hasContent = true;
+      } else {
+        if ((allowBlockScalars && readBlockScalar(state, flowIndent)) ||
+            readSingleQuotedScalar(state, flowIndent) ||
+            readDoubleQuotedScalar(state, flowIndent)) {
+          hasContent = true;
+
+        } else if (readAlias(state)) {
+          hasContent = true;
+
+          if (state.tag !== null || state.anchor !== null) {
+            throwError(state, 'alias node should not have any properties');
+          }
+
+        } else if (readPlainScalar(state, flowIndent, CONTEXT_FLOW_IN === nodeContext)) {
+          hasContent = true;
+
+          if (state.tag === null) {
+            state.tag = '?';
+          }
+        }
+
+        if (state.anchor !== null) {
+          state.anchorMap[state.anchor] = state.result;
+        }
+      }
+    } else if (indentStatus === 0) {
+      // Special case: block sequences are allowed to have same indentation level as the parent.
+      // http://www.yaml.org/spec/1.2/spec.html#id2799784
+      hasContent = allowBlockCollections && readBlockSequence(state, blockIndent);
+    }
+  }
+
+  if (state.tag === null) {
+    if (state.anchor !== null) {
+      state.anchorMap[state.anchor] = state.result;
+    }
+
+  } else if (state.tag === '?') {
+    // Implicit resolving is not allowed for non-scalar types, and '?'
+    // non-specific tag is only automatically assigned to plain scalars.
+    //
+    // We only need to check kind conformity in case user explicitly assigns '?'
+    // tag, for example like this: "!<?> [0]"
+    //
+    if (state.result !== null && state.kind !== 'scalar') {
+      throwError(state, 'unacceptable node kind for !<?> tag; it should be "scalar", not "' + state.kind + '"');
+    }
+
+    for (typeIndex = 0, typeQuantity = state.implicitTypes.length; typeIndex < typeQuantity; typeIndex += 1) {
+      type = state.implicitTypes[typeIndex];
+
+      if (type.resolve(state.result)) { // `state.result` updated in resolver if matched
+        state.result = type.construct(state.result);
+        state.tag = type.tag;
+        if (state.anchor !== null) {
+          state.anchorMap[state.anchor] = state.result;
+        }
+        break;
+      }
+    }
+  } else if (state.tag !== '!') {
+    if (_hasOwnProperty$1.call(state.typeMap[state.kind || 'fallback'], state.tag)) {
+      type = state.typeMap[state.kind || 'fallback'][state.tag];
+    } else {
+      // looking for multi type
+      type = null;
+      typeList = state.typeMap.multi[state.kind || 'fallback'];
+
+      for (typeIndex = 0, typeQuantity = typeList.length; typeIndex < typeQuantity; typeIndex += 1) {
+        if (state.tag.slice(0, typeList[typeIndex].tag.length) === typeList[typeIndex].tag) {
+          type = typeList[typeIndex];
+          break;
+        }
+      }
+    }
+
+    if (!type) {
+      throwError(state, 'unknown tag !<' + state.tag + '>');
+    }
+
+    if (state.result !== null && type.kind !== state.kind) {
+      throwError(state, 'unacceptable node kind for !<' + state.tag + '> tag; it should be "' + type.kind + '", not "' + state.kind + '"');
+    }
+
+    if (!type.resolve(state.result, state.tag)) { // `state.result` updated in resolver if matched
+      throwError(state, 'cannot resolve a node with !<' + state.tag + '> explicit tag');
+    } else {
+      state.result = type.construct(state.result, state.tag);
+      if (state.anchor !== null) {
+        state.anchorMap[state.anchor] = state.result;
+      }
+    }
+  }
+
+  if (state.listener !== null) {
+    state.listener('close', state);
+  }
+  return state.tag !== null ||  state.anchor !== null || hasContent;
+}
+
+function readDocument(state) {
+  var documentStart = state.position,
+      _position,
+      directiveName,
+      directiveArgs,
+      hasDirectives = false,
+      ch;
+
+  state.version = null;
+  state.checkLineBreaks = state.legacy;
+  state.tagMap = Object.create(null);
+  state.anchorMap = Object.create(null);
+
+  while ((ch = state.input.charCodeAt(state.position)) !== 0) {
+    skipSeparationSpace(state, true, -1);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (state.lineIndent > 0 || ch !== 0x25/* % */) {
+      break;
+    }
+
+    hasDirectives = true;
+    ch = state.input.charCodeAt(++state.position);
+    _position = state.position;
+
+    while (ch !== 0 && !is_WS_OR_EOL(ch)) {
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    directiveName = state.input.slice(_position, state.position);
+    directiveArgs = [];
+
+    if (directiveName.length < 1) {
+      throwError(state, 'directive name must not be less than one character in length');
+    }
+
+    while (ch !== 0) {
+      while (is_WHITE_SPACE(ch)) {
+        ch = state.input.charCodeAt(++state.position);
+      }
+
+      if (ch === 0x23/* # */) {
+        do { ch = state.input.charCodeAt(++state.position); }
+        while (ch !== 0 && !is_EOL(ch));
+        break;
+      }
+
+      if (is_EOL(ch)) break;
+
+      _position = state.position;
+
+      while (ch !== 0 && !is_WS_OR_EOL(ch)) {
+        ch = state.input.charCodeAt(++state.position);
+      }
+
+      directiveArgs.push(state.input.slice(_position, state.position));
+    }
+
+    if (ch !== 0) readLineBreak(state);
+
+    if (_hasOwnProperty$1.call(directiveHandlers, directiveName)) {
+      directiveHandlers[directiveName](state, directiveName, directiveArgs);
+    } else {
+      throwWarning(state, 'unknown document directive "' + directiveName + '"');
+    }
+  }
+
+  skipSeparationSpace(state, true, -1);
+
+  if (state.lineIndent === 0 &&
+      state.input.charCodeAt(state.position)     === 0x2D/* - */ &&
+      state.input.charCodeAt(state.position + 1) === 0x2D/* - */ &&
+      state.input.charCodeAt(state.position + 2) === 0x2D/* - */) {
+    state.position += 3;
+    skipSeparationSpace(state, true, -1);
+
+  } else if (hasDirectives) {
+    throwError(state, 'directives end mark is expected');
+  }
+
+  composeNode(state, state.lineIndent - 1, CONTEXT_BLOCK_OUT, false, true);
+  skipSeparationSpace(state, true, -1);
+
+  if (state.checkLineBreaks &&
+      PATTERN_NON_ASCII_LINE_BREAKS.test(state.input.slice(documentStart, state.position))) {
+    throwWarning(state, 'non-ASCII line breaks are interpreted as content');
+  }
+
+  state.documents.push(state.result);
+
+  if (state.position === state.lineStart && testDocumentSeparator(state)) {
+
+    if (state.input.charCodeAt(state.position) === 0x2E/* . */) {
+      state.position += 3;
+      skipSeparationSpace(state, true, -1);
+    }
+    return;
+  }
+
+  if (state.position < (state.length - 1)) {
+    throwError(state, 'end of the stream or a document separator is expected');
+  } else {
+    return;
+  }
+}
+
+
+function loadDocuments(input, options) {
+  input = String(input);
+  options = options || {};
+
+  if (input.length !== 0) {
+
+    // Add tailing `\n` if not exists
+    if (input.charCodeAt(input.length - 1) !== 0x0A/* LF */ &&
+        input.charCodeAt(input.length - 1) !== 0x0D/* CR */) {
+      input += '\n';
+    }
+
+    // Strip BOM
+    if (input.charCodeAt(0) === 0xFEFF) {
+      input = input.slice(1);
+    }
+  }
+
+  var state = new State$1(input, options);
+
+  var nullpos = input.indexOf('\0');
+
+  if (nullpos !== -1) {
+    state.position = nullpos;
+    throwError(state, 'null byte is not allowed in input');
+  }
+
+  // Use 0 as string terminator. That significantly simplifies bounds check.
+  state.input += '\0';
+
+  while (state.input.charCodeAt(state.position) === 0x20/* Space */) {
+    state.lineIndent += 1;
+    state.position += 1;
+  }
+
+  while (state.position < (state.length - 1)) {
+    readDocument(state);
+  }
+
+  return state.documents;
+}
+
+
+function loadAll$1(input, iterator, options) {
+  if (iterator !== null && typeof iterator === 'object' && typeof options === 'undefined') {
+    options = iterator;
+    iterator = null;
+  }
+
+  var documents = loadDocuments(input, options);
+
+  if (typeof iterator !== 'function') {
+    return documents;
+  }
+
+  for (var index = 0, length = documents.length; index < length; index += 1) {
+    iterator(documents[index]);
+  }
+}
+
+
+function load$1(input, options) {
+  var documents = loadDocuments(input, options);
+
+  if (documents.length === 0) {
+    /*eslint-disable no-undefined*/
+    return undefined;
+  } else if (documents.length === 1) {
+    return documents[0];
+  }
+  throw new exception('expected a single document in the stream, but found more');
+}
+
+
+var loadAll_1 = loadAll$1;
+var load_1    = load$1;
+
+var loader = {
+	loadAll: loadAll_1,
+	load: load_1
+};
+
+/*eslint-disable no-use-before-define*/
+
+
+
+
+
+var _toString       = Object.prototype.toString;
+var _hasOwnProperty = Object.prototype.hasOwnProperty;
+
+var CHAR_BOM                  = 0xFEFF;
+var CHAR_TAB                  = 0x09; /* Tab */
+var CHAR_LINE_FEED            = 0x0A; /* LF */
+var CHAR_CARRIAGE_RETURN      = 0x0D; /* CR */
+var CHAR_SPACE                = 0x20; /* Space */
+var CHAR_EXCLAMATION          = 0x21; /* ! */
+var CHAR_DOUBLE_QUOTE         = 0x22; /* " */
+var CHAR_SHARP                = 0x23; /* # */
+var CHAR_PERCENT              = 0x25; /* % */
+var CHAR_AMPERSAND            = 0x26; /* & */
+var CHAR_SINGLE_QUOTE         = 0x27; /* ' */
+var CHAR_ASTERISK             = 0x2A; /* * */
+var CHAR_COMMA                = 0x2C; /* , */
+var CHAR_MINUS                = 0x2D; /* - */
+var CHAR_COLON                = 0x3A; /* : */
+var CHAR_EQUALS               = 0x3D; /* = */
+var CHAR_GREATER_THAN         = 0x3E; /* > */
+var CHAR_QUESTION             = 0x3F; /* ? */
+var CHAR_COMMERCIAL_AT        = 0x40; /* @ */
+var CHAR_LEFT_SQUARE_BRACKET  = 0x5B; /* [ */
+var CHAR_RIGHT_SQUARE_BRACKET = 0x5D; /* ] */
+var CHAR_GRAVE_ACCENT         = 0x60; /* ` */
+var CHAR_LEFT_CURLY_BRACKET   = 0x7B; /* { */
+var CHAR_VERTICAL_LINE        = 0x7C; /* | */
+var CHAR_RIGHT_CURLY_BRACKET  = 0x7D; /* } */
+
+var ESCAPE_SEQUENCES = {};
+
+ESCAPE_SEQUENCES[0x00]   = '\\0';
+ESCAPE_SEQUENCES[0x07]   = '\\a';
+ESCAPE_SEQUENCES[0x08]   = '\\b';
+ESCAPE_SEQUENCES[0x09]   = '\\t';
+ESCAPE_SEQUENCES[0x0A]   = '\\n';
+ESCAPE_SEQUENCES[0x0B]   = '\\v';
+ESCAPE_SEQUENCES[0x0C]   = '\\f';
+ESCAPE_SEQUENCES[0x0D]   = '\\r';
+ESCAPE_SEQUENCES[0x1B]   = '\\e';
+ESCAPE_SEQUENCES[0x22]   = '\\"';
+ESCAPE_SEQUENCES[0x5C]   = '\\\\';
+ESCAPE_SEQUENCES[0x85]   = '\\N';
+ESCAPE_SEQUENCES[0xA0]   = '\\_';
+ESCAPE_SEQUENCES[0x2028] = '\\L';
+ESCAPE_SEQUENCES[0x2029] = '\\P';
+
+var DEPRECATED_BOOLEANS_SYNTAX = [
+  'y', 'Y', 'yes', 'Yes', 'YES', 'on', 'On', 'ON',
+  'n', 'N', 'no', 'No', 'NO', 'off', 'Off', 'OFF'
+];
+
+var DEPRECATED_BASE60_SYNTAX = /^[-+]?[0-9_]+(?::[0-9_]+)+(?:\.[0-9_]*)?$/;
+
+function compileStyleMap(schema, map) {
+  var result, keys, index, length, tag, style, type;
+
+  if (map === null) return {};
+
+  result = {};
+  keys = Object.keys(map);
+
+  for (index = 0, length = keys.length; index < length; index += 1) {
+    tag = keys[index];
+    style = String(map[tag]);
+
+    if (tag.slice(0, 2) === '!!') {
+      tag = 'tag:yaml.org,2002:' + tag.slice(2);
+    }
+    type = schema.compiledTypeMap['fallback'][tag];
+
+    if (type && _hasOwnProperty.call(type.styleAliases, style)) {
+      style = type.styleAliases[style];
+    }
+
+    result[tag] = style;
+  }
+
+  return result;
+}
+
+function encodeHex(character) {
+  var string, handle, length;
+
+  string = character.toString(16).toUpperCase();
+
+  if (character <= 0xFF) {
+    handle = 'x';
+    length = 2;
+  } else if (character <= 0xFFFF) {
+    handle = 'u';
+    length = 4;
+  } else if (character <= 0xFFFFFFFF) {
+    handle = 'U';
+    length = 8;
+  } else {
+    throw new exception('code point within a string may not be greater than 0xFFFFFFFF');
+  }
+
+  return '\\' + handle + common.repeat('0', length - string.length) + string;
+}
+
+
+var QUOTING_TYPE_SINGLE = 1,
+    QUOTING_TYPE_DOUBLE = 2;
+
+function State(options) {
+  this.schema        = options['schema'] || _default;
+  this.indent        = Math.max(1, (options['indent'] || 2));
+  this.noArrayIndent = options['noArrayIndent'] || false;
+  this.skipInvalid   = options['skipInvalid'] || false;
+  this.flowLevel     = (common.isNothing(options['flowLevel']) ? -1 : options['flowLevel']);
+  this.styleMap      = compileStyleMap(this.schema, options['styles'] || null);
+  this.sortKeys      = options['sortKeys'] || false;
+  this.lineWidth     = options['lineWidth'] || 80;
+  this.noRefs        = options['noRefs'] || false;
+  this.noCompatMode  = options['noCompatMode'] || false;
+  this.condenseFlow  = options['condenseFlow'] || false;
+  this.quotingType   = options['quotingType'] === '"' ? QUOTING_TYPE_DOUBLE : QUOTING_TYPE_SINGLE;
+  this.forceQuotes   = options['forceQuotes'] || false;
+  this.replacer      = typeof options['replacer'] === 'function' ? options['replacer'] : null;
+
+  this.implicitTypes = this.schema.compiledImplicit;
+  this.explicitTypes = this.schema.compiledExplicit;
+
+  this.tag = null;
+  this.result = '';
+
+  this.duplicates = [];
+  this.usedDuplicates = null;
+}
+
+// Indents every line in a string. Empty lines (\n only) are not indented.
+function indentString(string, spaces) {
+  var ind = common.repeat(' ', spaces),
+      position = 0,
+      next = -1,
+      result = '',
+      line,
+      length = string.length;
+
+  while (position < length) {
+    next = string.indexOf('\n', position);
+    if (next === -1) {
+      line = string.slice(position);
+      position = length;
+    } else {
+      line = string.slice(position, next + 1);
+      position = next + 1;
+    }
+
+    if (line.length && line !== '\n') result += ind;
+
+    result += line;
+  }
+
+  return result;
+}
+
+function generateNextLine(state, level) {
+  return '\n' + common.repeat(' ', state.indent * level);
+}
+
+function testImplicitResolving(state, str) {
+  var index, length, type;
+
+  for (index = 0, length = state.implicitTypes.length; index < length; index += 1) {
+    type = state.implicitTypes[index];
+
+    if (type.resolve(str)) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+// [33] s-white ::= s-space | s-tab
+function isWhitespace(c) {
+  return c === CHAR_SPACE || c === CHAR_TAB;
+}
+
+// Returns true if the character can be printed without escaping.
+// From YAML 1.2: "any allowed characters known to be non-printable
+// should also be escaped. [However,] This isn’t mandatory"
+// Derived from nb-char - \t - #x85 - #xA0 - #x2028 - #x2029.
+function isPrintable(c) {
+  return  (0x00020 <= c && c <= 0x00007E)
+      || ((0x000A1 <= c && c <= 0x00D7FF) && c !== 0x2028 && c !== 0x2029)
+      || ((0x0E000 <= c && c <= 0x00FFFD) && c !== CHAR_BOM)
+      ||  (0x10000 <= c && c <= 0x10FFFF);
+}
+
+// [34] ns-char ::= nb-char - s-white
+// [27] nb-char ::= c-printable - b-char - c-byte-order-mark
+// [26] b-char  ::= b-line-feed | b-carriage-return
+// Including s-white (for some reason, examples doesn't match specs in this aspect)
+// ns-char ::= c-printable - b-line-feed - b-carriage-return - c-byte-order-mark
+function isNsCharOrWhitespace(c) {
+  return isPrintable(c)
+    && c !== CHAR_BOM
+    // - b-char
+    && c !== CHAR_CARRIAGE_RETURN
+    && c !== CHAR_LINE_FEED;
+}
+
+// [127]  ns-plain-safe(c) ::= c = flow-out  ⇒ ns-plain-safe-out
+//                             c = flow-in   ⇒ ns-plain-safe-in
+//                             c = block-key ⇒ ns-plain-safe-out
+//                             c = flow-key  ⇒ ns-plain-safe-in
+// [128] ns-plain-safe-out ::= ns-char
+// [129]  ns-plain-safe-in ::= ns-char - c-flow-indicator
+// [130]  ns-plain-char(c) ::=  ( ns-plain-safe(c) - “:” - “#” )
+//                            | ( /* An ns-char preceding */ “#” )
+//                            | ( “:” /* Followed by an ns-plain-safe(c) */ )
+function isPlainSafe(c, prev, inblock) {
+  var cIsNsCharOrWhitespace = isNsCharOrWhitespace(c);
+  var cIsNsChar = cIsNsCharOrWhitespace && !isWhitespace(c);
+  return (
+    // ns-plain-safe
+    inblock ? // c = flow-in
+      cIsNsCharOrWhitespace
+      : cIsNsCharOrWhitespace
+        // - c-flow-indicator
+        && c !== CHAR_COMMA
+        && c !== CHAR_LEFT_SQUARE_BRACKET
+        && c !== CHAR_RIGHT_SQUARE_BRACKET
+        && c !== CHAR_LEFT_CURLY_BRACKET
+        && c !== CHAR_RIGHT_CURLY_BRACKET
+  )
+    // ns-plain-char
+    && c !== CHAR_SHARP // false on '#'
+    && !(prev === CHAR_COLON && !cIsNsChar) // false on ': '
+    || (isNsCharOrWhitespace(prev) && !isWhitespace(prev) && c === CHAR_SHARP) // change to true on '[^ ]#'
+    || (prev === CHAR_COLON && cIsNsChar); // change to true on ':[^ ]'
+}
+
+// Simplified test for values allowed as the first character in plain style.
+function isPlainSafeFirst(c) {
+  // Uses a subset of ns-char - c-indicator
+  // where ns-char = nb-char - s-white.
+  // No support of ( ( “?” | “:” | “-” ) /* Followed by an ns-plain-safe(c)) */ ) part
+  return isPrintable(c) && c !== CHAR_BOM
+    && !isWhitespace(c) // - s-white
+    // - (c-indicator ::=
+    // “-” | “?” | “:” | “,” | “[” | “]” | “{” | “}”
+    && c !== CHAR_MINUS
+    && c !== CHAR_QUESTION
+    && c !== CHAR_COLON
+    && c !== CHAR_COMMA
+    && c !== CHAR_LEFT_SQUARE_BRACKET
+    && c !== CHAR_RIGHT_SQUARE_BRACKET
+    && c !== CHAR_LEFT_CURLY_BRACKET
+    && c !== CHAR_RIGHT_CURLY_BRACKET
+    // | “#” | “&” | “*” | “!” | “|” | “=” | “>” | “'” | “"”
+    && c !== CHAR_SHARP
+    && c !== CHAR_AMPERSAND
+    && c !== CHAR_ASTERISK
+    && c !== CHAR_EXCLAMATION
+    && c !== CHAR_VERTICAL_LINE
+    && c !== CHAR_EQUALS
+    && c !== CHAR_GREATER_THAN
+    && c !== CHAR_SINGLE_QUOTE
+    && c !== CHAR_DOUBLE_QUOTE
+    // | “%” | “@” | “`”)
+    && c !== CHAR_PERCENT
+    && c !== CHAR_COMMERCIAL_AT
+    && c !== CHAR_GRAVE_ACCENT;
+}
+
+// Simplified test for values allowed as the last character in plain style.
+function isPlainSafeLast(c) {
+  // just not whitespace or colon, it will be checked to be plain character later
+  return !isWhitespace(c) && c !== CHAR_COLON;
+}
+
+// Same as 'string'.codePointAt(pos), but works in older browsers.
+function codePointAt(string, pos) {
+  var first = string.charCodeAt(pos), second;
+  if (first >= 0xD800 && first <= 0xDBFF && pos + 1 < string.length) {
+    second = string.charCodeAt(pos + 1);
+    if (second >= 0xDC00 && second <= 0xDFFF) {
+      // https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
+      return (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
+    }
+  }
+  return first;
+}
+
+// Determines whether block indentation indicator is required.
+function needIndentIndicator(string) {
+  var leadingSpaceRe = /^\n* /;
+  return leadingSpaceRe.test(string);
+}
+
+var STYLE_PLAIN   = 1,
+    STYLE_SINGLE  = 2,
+    STYLE_LITERAL = 3,
+    STYLE_FOLDED  = 4,
+    STYLE_DOUBLE  = 5;
+
+// Determines which scalar styles are possible and returns the preferred style.
+// lineWidth = -1 => no limit.
+// Pre-conditions: str.length > 0.
+// Post-conditions:
+//    STYLE_PLAIN or STYLE_SINGLE => no \n are in the string.
+//    STYLE_LITERAL => no lines are suitable for folding (or lineWidth is -1).
+//    STYLE_FOLDED => a line > lineWidth and can be folded (and lineWidth != -1).
+function chooseScalarStyle(string, singleLineOnly, indentPerLevel, lineWidth,
+  testAmbiguousType, quotingType, forceQuotes, inblock) {
+
+  var i;
+  var char = 0;
+  var prevChar = null;
+  var hasLineBreak = false;
+  var hasFoldableLine = false; // only checked if shouldTrackWidth
+  var shouldTrackWidth = lineWidth !== -1;
+  var previousLineBreak = -1; // count the first line correctly
+  var plain = isPlainSafeFirst(codePointAt(string, 0))
+          && isPlainSafeLast(codePointAt(string, string.length - 1));
+
+  if (singleLineOnly || forceQuotes) {
+    // Case: no block styles.
+    // Check for disallowed characters to rule out plain and single.
+    for (i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
+      char = codePointAt(string, i);
+      if (!isPrintable(char)) {
+        return STYLE_DOUBLE;
+      }
+      plain = plain && isPlainSafe(char, prevChar, inblock);
+      prevChar = char;
+    }
+  } else {
+    // Case: block styles permitted.
+    for (i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
+      char = codePointAt(string, i);
+      if (char === CHAR_LINE_FEED) {
+        hasLineBreak = true;
+        // Check if any line can be folded.
+        if (shouldTrackWidth) {
+          hasFoldableLine = hasFoldableLine ||
+            // Foldable line = too long, and not more-indented.
+            (i - previousLineBreak - 1 > lineWidth &&
+             string[previousLineBreak + 1] !== ' ');
+          previousLineBreak = i;
+        }
+      } else if (!isPrintable(char)) {
+        return STYLE_DOUBLE;
+      }
+      plain = plain && isPlainSafe(char, prevChar, inblock);
+      prevChar = char;
+    }
+    // in case the end is missing a \n
+    hasFoldableLine = hasFoldableLine || (shouldTrackWidth &&
+      (i - previousLineBreak - 1 > lineWidth &&
+       string[previousLineBreak + 1] !== ' '));
+  }
+  // Although every style can represent \n without escaping, prefer block styles
+  // for multiline, since they're more readable and they don't add empty lines.
+  // Also prefer folding a super-long line.
+  if (!hasLineBreak && !hasFoldableLine) {
+    // Strings interpretable as another type have to be quoted;
+    // e.g. the string 'true' vs. the boolean true.
+    if (plain && !forceQuotes && !testAmbiguousType(string)) {
+      return STYLE_PLAIN;
+    }
+    return quotingType === QUOTING_TYPE_DOUBLE ? STYLE_DOUBLE : STYLE_SINGLE;
+  }
+  // Edge case: block indentation indicator can only have one digit.
+  if (indentPerLevel > 9 && needIndentIndicator(string)) {
+    return STYLE_DOUBLE;
+  }
+  // At this point we know block styles are valid.
+  // Prefer literal style unless we want to fold.
+  if (!forceQuotes) {
+    return hasFoldableLine ? STYLE_FOLDED : STYLE_LITERAL;
+  }
+  return quotingType === QUOTING_TYPE_DOUBLE ? STYLE_DOUBLE : STYLE_SINGLE;
+}
+
+// Note: line breaking/folding is implemented for only the folded style.
+// NB. We drop the last trailing newline (if any) of a returned block scalar
+//  since the dumper adds its own newline. This always works:
+//    • No ending newline => unaffected; already using strip "-" chomping.
+//    • Ending newline    => removed then restored.
+//  Importantly, this keeps the "+" chomp indicator from gaining an extra line.
+function writeScalar(state, string, level, iskey, inblock) {
+  state.dump = (function () {
+    if (string.length === 0) {
+      return state.quotingType === QUOTING_TYPE_DOUBLE ? '""' : "''";
+    }
+    if (!state.noCompatMode) {
+      if (DEPRECATED_BOOLEANS_SYNTAX.indexOf(string) !== -1 || DEPRECATED_BASE60_SYNTAX.test(string)) {
+        return state.quotingType === QUOTING_TYPE_DOUBLE ? ('"' + string + '"') : ("'" + string + "'");
+      }
+    }
+
+    var indent = state.indent * Math.max(1, level); // no 0-indent scalars
+    // As indentation gets deeper, let the width decrease monotonically
+    // to the lower bound min(state.lineWidth, 40).
+    // Note that this implies
+    //  state.lineWidth ≤ 40 + state.indent: width is fixed at the lower bound.
+    //  state.lineWidth > 40 + state.indent: width decreases until the lower bound.
+    // This behaves better than a constant minimum width which disallows narrower options,
+    // or an indent threshold which causes the width to suddenly increase.
+    var lineWidth = state.lineWidth === -1
+      ? -1 : Math.max(Math.min(state.lineWidth, 40), state.lineWidth - indent);
+
+    // Without knowing if keys are implicit/explicit, assume implicit for safety.
+    var singleLineOnly = iskey
+      // No block styles in flow mode.
+      || (state.flowLevel > -1 && level >= state.flowLevel);
+    function testAmbiguity(string) {
+      return testImplicitResolving(state, string);
+    }
+
+    switch (chooseScalarStyle(string, singleLineOnly, state.indent, lineWidth,
+      testAmbiguity, state.quotingType, state.forceQuotes && !iskey, inblock)) {
+
+      case STYLE_PLAIN:
+        return string;
+      case STYLE_SINGLE:
+        return "'" + string.replace(/'/g, "''") + "'";
+      case STYLE_LITERAL:
+        return '|' + blockHeader(string, state.indent)
+          + dropEndingNewline(indentString(string, indent));
+      case STYLE_FOLDED:
+        return '>' + blockHeader(string, state.indent)
+          + dropEndingNewline(indentString(foldString(string, lineWidth), indent));
+      case STYLE_DOUBLE:
+        return '"' + escapeString(string) + '"';
+      default:
+        throw new exception('impossible error: invalid scalar style');
+    }
+  }());
+}
+
+// Pre-conditions: string is valid for a block scalar, 1 <= indentPerLevel <= 9.
+function blockHeader(string, indentPerLevel) {
+  var indentIndicator = needIndentIndicator(string) ? String(indentPerLevel) : '';
+
+  // note the special case: the string '\n' counts as a "trailing" empty line.
+  var clip =          string[string.length - 1] === '\n';
+  var keep = clip && (string[string.length - 2] === '\n' || string === '\n');
+  var chomp = keep ? '+' : (clip ? '' : '-');
+
+  return indentIndicator + chomp + '\n';
+}
+
+// (See the note for writeScalar.)
+function dropEndingNewline(string) {
+  return string[string.length - 1] === '\n' ? string.slice(0, -1) : string;
+}
+
+// Note: a long line without a suitable break point will exceed the width limit.
+// Pre-conditions: every char in str isPrintable, str.length > 0, width > 0.
+function foldString(string, width) {
+  // In folded style, $k$ consecutive newlines output as $k+1$ newlines—
+  // unless they're before or after a more-indented line, or at the very
+  // beginning or end, in which case $k$ maps to $k$.
+  // Therefore, parse each chunk as newline(s) followed by a content line.
+  var lineRe = /(\n+)([^\n]*)/g;
+
+  // first line (possibly an empty line)
+  var result = (function () {
+    var nextLF = string.indexOf('\n');
+    nextLF = nextLF !== -1 ? nextLF : string.length;
+    lineRe.lastIndex = nextLF;
+    return foldLine(string.slice(0, nextLF), width);
+  }());
+  // If we haven't reached the first content line yet, don't add an extra \n.
+  var prevMoreIndented = string[0] === '\n' || string[0] === ' ';
+  var moreIndented;
+
+  // rest of the lines
+  var match;
+  while ((match = lineRe.exec(string))) {
+    var prefix = match[1], line = match[2];
+    moreIndented = (line[0] === ' ');
+    result += prefix
+      + (!prevMoreIndented && !moreIndented && line !== ''
+        ? '\n' : '')
+      + foldLine(line, width);
+    prevMoreIndented = moreIndented;
+  }
+
+  return result;
+}
+
+// Greedy line breaking.
+// Picks the longest line under the limit each time,
+// otherwise settles for the shortest line over the limit.
+// NB. More-indented lines *cannot* be folded, as that would add an extra \n.
+function foldLine(line, width) {
+  if (line === '' || line[0] === ' ') return line;
+
+  // Since a more-indented line adds a \n, breaks can't be followed by a space.
+  var breakRe = / [^ ]/g; // note: the match index will always be <= length-2.
+  var match;
+  // start is an inclusive index. end, curr, and next are exclusive.
+  var start = 0, end, curr = 0, next = 0;
+  var result = '';
+
+  // Invariants: 0 <= start <= length-1.
+  //   0 <= curr <= next <= max(0, length-2). curr - start <= width.
+  // Inside the loop:
+  //   A match implies length >= 2, so curr and next are <= length-2.
+  while ((match = breakRe.exec(line))) {
+    next = match.index;
+    // maintain invariant: curr - start <= width
+    if (next - start > width) {
+      end = (curr > start) ? curr : next; // derive end <= length-2
+      result += '\n' + line.slice(start, end);
+      // skip the space that was output as \n
+      start = end + 1;                    // derive start <= length-1
+    }
+    curr = next;
+  }
+
+  // By the invariants, start <= length-1, so there is something left over.
+  // It is either the whole string or a part starting from non-whitespace.
+  result += '\n';
+  // Insert a break if the remainder is too long and there is a break available.
+  if (line.length - start > width && curr > start) {
+    result += line.slice(start, curr) + '\n' + line.slice(curr + 1);
+  } else {
+    result += line.slice(start);
+  }
+
+  return result.slice(1); // drop extra \n joiner
+}
+
+// Escapes a double-quoted string.
+function escapeString(string) {
+  var result = '';
+  var char = 0;
+  var escapeSeq;
+
+  for (var i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
+    char = codePointAt(string, i);
+    escapeSeq = ESCAPE_SEQUENCES[char];
+
+    if (!escapeSeq && isPrintable(char)) {
+      result += string[i];
+      if (char >= 0x10000) result += string[i + 1];
+    } else {
+      result += escapeSeq || encodeHex(char);
+    }
+  }
+
+  return result;
+}
+
+function writeFlowSequence(state, level, object) {
+  var _result = '',
+      _tag    = state.tag,
+      index,
+      length,
+      value;
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    value = object[index];
+
+    if (state.replacer) {
+      value = state.replacer.call(object, String(index), value);
+    }
+
+    // Write only valid elements, put null instead of invalid elements.
+    if (writeNode(state, level, value, false, false) ||
+        (typeof value === 'undefined' &&
+         writeNode(state, level, null, false, false))) {
+
+      if (_result !== '') _result += ',' + (!state.condenseFlow ? ' ' : '');
+      _result += state.dump;
+    }
+  }
+
+  state.tag = _tag;
+  state.dump = '[' + _result + ']';
+}
+
+function writeBlockSequence(state, level, object, compact) {
+  var _result = '',
+      _tag    = state.tag,
+      index,
+      length,
+      value;
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    value = object[index];
+
+    if (state.replacer) {
+      value = state.replacer.call(object, String(index), value);
+    }
+
+    // Write only valid elements, put null instead of invalid elements.
+    if (writeNode(state, level + 1, value, true, true, false, true) ||
+        (typeof value === 'undefined' &&
+         writeNode(state, level + 1, null, true, true, false, true))) {
+
+      if (!compact || _result !== '') {
+        _result += generateNextLine(state, level);
+      }
+
+      if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
+        _result += '-';
+      } else {
+        _result += '- ';
+      }
+
+      _result += state.dump;
+    }
+  }
+
+  state.tag = _tag;
+  state.dump = _result || '[]'; // Empty sequence if no valid values.
+}
+
+function writeFlowMapping(state, level, object) {
+  var _result       = '',
+      _tag          = state.tag,
+      objectKeyList = Object.keys(object),
+      index,
+      length,
+      objectKey,
+      objectValue,
+      pairBuffer;
+
+  for (index = 0, length = objectKeyList.length; index < length; index += 1) {
+
+    pairBuffer = '';
+    if (_result !== '') pairBuffer += ', ';
+
+    if (state.condenseFlow) pairBuffer += '"';
+
+    objectKey = objectKeyList[index];
+    objectValue = object[objectKey];
+
+    if (state.replacer) {
+      objectValue = state.replacer.call(object, objectKey, objectValue);
+    }
+
+    if (!writeNode(state, level, objectKey, false, false)) {
+      continue; // Skip this pair because of invalid key;
+    }
+
+    if (state.dump.length > 1024) pairBuffer += '? ';
+
+    pairBuffer += state.dump + (state.condenseFlow ? '"' : '') + ':' + (state.condenseFlow ? '' : ' ');
+
+    if (!writeNode(state, level, objectValue, false, false)) {
+      continue; // Skip this pair because of invalid value.
+    }
+
+    pairBuffer += state.dump;
+
+    // Both key and value are valid.
+    _result += pairBuffer;
+  }
+
+  state.tag = _tag;
+  state.dump = '{' + _result + '}';
+}
+
+function writeBlockMapping(state, level, object, compact) {
+  var _result       = '',
+      _tag          = state.tag,
+      objectKeyList = Object.keys(object),
+      index,
+      length,
+      objectKey,
+      objectValue,
+      explicitPair,
+      pairBuffer;
+
+  // Allow sorting keys so that the output file is deterministic
+  if (state.sortKeys === true) {
+    // Default sorting
+    objectKeyList.sort();
+  } else if (typeof state.sortKeys === 'function') {
+    // Custom sort function
+    objectKeyList.sort(state.sortKeys);
+  } else if (state.sortKeys) {
+    // Something is wrong
+    throw new exception('sortKeys must be a boolean or a function');
+  }
+
+  for (index = 0, length = objectKeyList.length; index < length; index += 1) {
+    pairBuffer = '';
+
+    if (!compact || _result !== '') {
+      pairBuffer += generateNextLine(state, level);
+    }
+
+    objectKey = objectKeyList[index];
+    objectValue = object[objectKey];
+
+    if (state.replacer) {
+      objectValue = state.replacer.call(object, objectKey, objectValue);
+    }
+
+    if (!writeNode(state, level + 1, objectKey, true, true, true)) {
+      continue; // Skip this pair because of invalid key.
+    }
+
+    explicitPair = (state.tag !== null && state.tag !== '?') ||
+                   (state.dump && state.dump.length > 1024);
+
+    if (explicitPair) {
+      if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
+        pairBuffer += '?';
+      } else {
+        pairBuffer += '? ';
+      }
+    }
+
+    pairBuffer += state.dump;
+
+    if (explicitPair) {
+      pairBuffer += generateNextLine(state, level);
+    }
+
+    if (!writeNode(state, level + 1, objectValue, true, explicitPair)) {
+      continue; // Skip this pair because of invalid value.
+    }
+
+    if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
+      pairBuffer += ':';
+    } else {
+      pairBuffer += ': ';
+    }
+
+    pairBuffer += state.dump;
+
+    // Both key and value are valid.
+    _result += pairBuffer;
+  }
+
+  state.tag = _tag;
+  state.dump = _result || '{}'; // Empty mapping if no valid pairs.
+}
+
+function detectType(state, object, explicit) {
+  var _result, typeList, index, length, type, style;
+
+  typeList = explicit ? state.explicitTypes : state.implicitTypes;
+
+  for (index = 0, length = typeList.length; index < length; index += 1) {
+    type = typeList[index];
+
+    if ((type.instanceOf  || type.predicate) &&
+        (!type.instanceOf || ((typeof object === 'object') && (object instanceof type.instanceOf))) &&
+        (!type.predicate  || type.predicate(object))) {
+
+      if (explicit) {
+        if (type.multi && type.representName) {
+          state.tag = type.representName(object);
+        } else {
+          state.tag = type.tag;
+        }
+      } else {
+        state.tag = '?';
+      }
+
+      if (type.represent) {
+        style = state.styleMap[type.tag] || type.defaultStyle;
+
+        if (_toString.call(type.represent) === '[object Function]') {
+          _result = type.represent(object, style);
+        } else if (_hasOwnProperty.call(type.represent, style)) {
+          _result = type.represent[style](object, style);
+        } else {
+          throw new exception('!<' + type.tag + '> tag resolver accepts not "' + style + '" style');
+        }
+
+        state.dump = _result;
+      }
+
+      return true;
+    }
+  }
+
+  return false;
+}
+
+// Serializes `object` and writes it to global `result`.
+// Returns true on success, or false on invalid object.
+//
+function writeNode(state, level, object, block, compact, iskey, isblockseq) {
+  state.tag = null;
+  state.dump = object;
+
+  if (!detectType(state, object, false)) {
+    detectType(state, object, true);
+  }
+
+  var type = _toString.call(state.dump);
+  var inblock = block;
+  var tagStr;
+
+  if (block) {
+    block = (state.flowLevel < 0 || state.flowLevel > level);
+  }
+
+  var objectOrArray = type === '[object Object]' || type === '[object Array]',
+      duplicateIndex,
+      duplicate;
+
+  if (objectOrArray) {
+    duplicateIndex = state.duplicates.indexOf(object);
+    duplicate = duplicateIndex !== -1;
+  }
+
+  if ((state.tag !== null && state.tag !== '?') || duplicate || (state.indent !== 2 && level > 0)) {
+    compact = false;
+  }
+
+  if (duplicate && state.usedDuplicates[duplicateIndex]) {
+    state.dump = '*ref_' + duplicateIndex;
+  } else {
+    if (objectOrArray && duplicate && !state.usedDuplicates[duplicateIndex]) {
+      state.usedDuplicates[duplicateIndex] = true;
+    }
+    if (type === '[object Object]') {
+      if (block && (Object.keys(state.dump).length !== 0)) {
+        writeBlockMapping(state, level, state.dump, compact);
+        if (duplicate) {
+          state.dump = '&ref_' + duplicateIndex + state.dump;
+        }
+      } else {
+        writeFlowMapping(state, level, state.dump);
+        if (duplicate) {
+          state.dump = '&ref_' + duplicateIndex + ' ' + state.dump;
+        }
+      }
+    } else if (type === '[object Array]') {
+      if (block && (state.dump.length !== 0)) {
+        if (state.noArrayIndent && !isblockseq && level > 0) {
+          writeBlockSequence(state, level - 1, state.dump, compact);
+        } else {
+          writeBlockSequence(state, level, state.dump, compact);
+        }
+        if (duplicate) {
+          state.dump = '&ref_' + duplicateIndex + state.dump;
+        }
+      } else {
+        writeFlowSequence(state, level, state.dump);
+        if (duplicate) {
+          state.dump = '&ref_' + duplicateIndex + ' ' + state.dump;
+        }
+      }
+    } else if (type === '[object String]') {
+      if (state.tag !== '?') {
+        writeScalar(state, state.dump, level, iskey, inblock);
+      }
+    } else if (type === '[object Undefined]') {
+      return false;
+    } else {
+      if (state.skipInvalid) return false;
+      throw new exception('unacceptable kind of an object to dump ' + type);
+    }
+
+    if (state.tag !== null && state.tag !== '?') {
+      // Need to encode all characters except those allowed by the spec:
+      //
+      // [35] ns-dec-digit    ::=  [#x30-#x39] /* 0-9 */
+      // [36] ns-hex-digit    ::=  ns-dec-digit
+      //                         | [#x41-#x46] /* A-F */ | [#x61-#x66] /* a-f */
+      // [37] ns-ascii-letter ::=  [#x41-#x5A] /* A-Z */ | [#x61-#x7A] /* a-z */
+      // [38] ns-word-char    ::=  ns-dec-digit | ns-ascii-letter | “-”
+      // [39] ns-uri-char     ::=  “%” ns-hex-digit ns-hex-digit | ns-word-char | “#”
+      //                         | “;” | “/” | “?” | “:” | “@” | “&” | “=” | “+” | “$” | “,”
+      //                         | “_” | “.” | “!” | “~” | “*” | “'” | “(” | “)” | “[” | “]”
+      //
+      // Also need to encode '!' because it has special meaning (end of tag prefix).
+      //
+      tagStr = encodeURI(
+        state.tag[0] === '!' ? state.tag.slice(1) : state.tag
+      ).replace(/!/g, '%21');
+
+      if (state.tag[0] === '!') {
+        tagStr = '!' + tagStr;
+      } else if (tagStr.slice(0, 18) === 'tag:yaml.org,2002:') {
+        tagStr = '!!' + tagStr.slice(18);
+      } else {
+        tagStr = '!<' + tagStr + '>';
+      }
+
+      state.dump = tagStr + ' ' + state.dump;
+    }
+  }
+
+  return true;
+}
+
+function getDuplicateReferences(object, state) {
+  var objects = [],
+      duplicatesIndexes = [],
+      index,
+      length;
+
+  inspectNode(object, objects, duplicatesIndexes);
+
+  for (index = 0, length = duplicatesIndexes.length; index < length; index += 1) {
+    state.duplicates.push(objects[duplicatesIndexes[index]]);
+  }
+  state.usedDuplicates = new Array(length);
+}
+
+function inspectNode(object, objects, duplicatesIndexes) {
+  var objectKeyList,
+      index,
+      length;
+
+  if (object !== null && typeof object === 'object') {
+    index = objects.indexOf(object);
+    if (index !== -1) {
+      if (duplicatesIndexes.indexOf(index) === -1) {
+        duplicatesIndexes.push(index);
+      }
+    } else {
+      objects.push(object);
+
+      if (Array.isArray(object)) {
+        for (index = 0, length = object.length; index < length; index += 1) {
+          inspectNode(object[index], objects, duplicatesIndexes);
+        }
+      } else {
+        objectKeyList = Object.keys(object);
+
+        for (index = 0, length = objectKeyList.length; index < length; index += 1) {
+          inspectNode(object[objectKeyList[index]], objects, duplicatesIndexes);
+        }
+      }
+    }
+  }
+}
+
+function dump$1(input, options) {
+  options = options || {};
+
+  var state = new State(options);
+
+  if (!state.noRefs) getDuplicateReferences(input, state);
+
+  var value = input;
+
+  if (state.replacer) {
+    value = state.replacer.call({ '': value }, '', value);
+  }
+
+  if (writeNode(state, 0, value, true, true)) return state.dump + '\n';
+
+  return '';
+}
+
+var dump_1 = dump$1;
+
+var dumper = {
+	dump: dump_1
+};
+
+function renamed(from, to) {
+  return function () {
+    throw new Error('Function yaml.' + from + ' is removed in js-yaml 4. ' +
+      'Use yaml.' + to + ' instead, which is now safe by default.');
+  };
+}
+
+
+var Type                = type;
+var Schema              = schema;
+var FAILSAFE_SCHEMA     = failsafe;
+var JSON_SCHEMA         = json;
+var CORE_SCHEMA         = core;
+var DEFAULT_SCHEMA      = _default;
+var load                = loader.load;
+var loadAll             = loader.loadAll;
+var dump                = dumper.dump;
+var YAMLException       = exception;
+
+// Re-export all types in case user wants to create custom schema
+var types = {
+  binary:    binary,
+  float:     float,
+  map:       map,
+  null:      _null,
+  pairs:     pairs,
+  set:       set,
+  timestamp: timestamp,
+  bool:      bool,
+  int:       int,
+  merge:     merge,
+  omap:      omap,
+  seq:       seq,
+  str:       str
+};
+
+// Removed functions from JS-YAML 3.0.x
+var safeLoad            = renamed('safeLoad', 'load');
+var safeLoadAll         = renamed('safeLoadAll', 'loadAll');
+var safeDump            = renamed('safeDump', 'dump');
+
+var jsYaml = {
+	Type: Type,
+	Schema: Schema,
+	FAILSAFE_SCHEMA: FAILSAFE_SCHEMA,
+	JSON_SCHEMA: JSON_SCHEMA,
+	CORE_SCHEMA: CORE_SCHEMA,
+	DEFAULT_SCHEMA: DEFAULT_SCHEMA,
+	load: load,
+	loadAll: loadAll,
+	dump: dump,
+	YAMLException: YAMLException,
+	types: types,
+	safeLoad: safeLoad,
+	safeLoadAll: safeLoadAll,
+	safeDump: safeDump
+};
+
+export { CORE_SCHEMA, DEFAULT_SCHEMA, FAILSAFE_SCHEMA, JSON_SCHEMA, Schema, Type, YAMLException, jsYaml as default, dump, load, loadAll, safeDump, safeLoad, safeLoadAll, types };
Index: frontend/node_modules/eslint/node_modules/js-yaml/index.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,47 @@
+'use strict';
+
+
+var loader = require('./lib/loader');
+var dumper = require('./lib/dumper');
+
+
+function renamed(from, to) {
+  return function () {
+    throw new Error('Function yaml.' + from + ' is removed in js-yaml 4. ' +
+      'Use yaml.' + to + ' instead, which is now safe by default.');
+  };
+}
+
+
+module.exports.Type                = require('./lib/type');
+module.exports.Schema              = require('./lib/schema');
+module.exports.FAILSAFE_SCHEMA     = require('./lib/schema/failsafe');
+module.exports.JSON_SCHEMA         = require('./lib/schema/json');
+module.exports.CORE_SCHEMA         = require('./lib/schema/core');
+module.exports.DEFAULT_SCHEMA      = require('./lib/schema/default');
+module.exports.load                = loader.load;
+module.exports.loadAll             = loader.loadAll;
+module.exports.dump                = dumper.dump;
+module.exports.YAMLException       = require('./lib/exception');
+
+// Re-export all types in case user wants to create custom schema
+module.exports.types = {
+  binary:    require('./lib/type/binary'),
+  float:     require('./lib/type/float'),
+  map:       require('./lib/type/map'),
+  null:      require('./lib/type/null'),
+  pairs:     require('./lib/type/pairs'),
+  set:       require('./lib/type/set'),
+  timestamp: require('./lib/type/timestamp'),
+  bool:      require('./lib/type/bool'),
+  int:       require('./lib/type/int'),
+  merge:     require('./lib/type/merge'),
+  omap:      require('./lib/type/omap'),
+  seq:       require('./lib/type/seq'),
+  str:       require('./lib/type/str')
+};
+
+// Removed functions from JS-YAML 3.0.x
+module.exports.safeLoad            = renamed('safeLoad', 'load');
+module.exports.safeLoadAll         = renamed('safeLoadAll', 'loadAll');
+module.exports.safeDump            = renamed('safeDump', 'dump');
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/common.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/common.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/common.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,59 @@
+'use strict';
+
+
+function isNothing(subject) {
+  return (typeof subject === 'undefined') || (subject === null);
+}
+
+
+function isObject(subject) {
+  return (typeof subject === 'object') && (subject !== null);
+}
+
+
+function toArray(sequence) {
+  if (Array.isArray(sequence)) return sequence;
+  else if (isNothing(sequence)) return [];
+
+  return [ sequence ];
+}
+
+
+function extend(target, source) {
+  var index, length, key, sourceKeys;
+
+  if (source) {
+    sourceKeys = Object.keys(source);
+
+    for (index = 0, length = sourceKeys.length; index < length; index += 1) {
+      key = sourceKeys[index];
+      target[key] = source[key];
+    }
+  }
+
+  return target;
+}
+
+
+function repeat(string, count) {
+  var result = '', cycle;
+
+  for (cycle = 0; cycle < count; cycle += 1) {
+    result += string;
+  }
+
+  return result;
+}
+
+
+function isNegativeZero(number) {
+  return (number === 0) && (Number.NEGATIVE_INFINITY === 1 / number);
+}
+
+
+module.exports.isNothing      = isNothing;
+module.exports.isObject       = isObject;
+module.exports.toArray        = toArray;
+module.exports.repeat         = repeat;
+module.exports.isNegativeZero = isNegativeZero;
+module.exports.extend         = extend;
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/dumper.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/dumper.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/dumper.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,965 @@
+'use strict';
+
+/*eslint-disable no-use-before-define*/
+
+var common              = require('./common');
+var YAMLException       = require('./exception');
+var DEFAULT_SCHEMA      = require('./schema/default');
+
+var _toString       = Object.prototype.toString;
+var _hasOwnProperty = Object.prototype.hasOwnProperty;
+
+var CHAR_BOM                  = 0xFEFF;
+var CHAR_TAB                  = 0x09; /* Tab */
+var CHAR_LINE_FEED            = 0x0A; /* LF */
+var CHAR_CARRIAGE_RETURN      = 0x0D; /* CR */
+var CHAR_SPACE                = 0x20; /* Space */
+var CHAR_EXCLAMATION          = 0x21; /* ! */
+var CHAR_DOUBLE_QUOTE         = 0x22; /* " */
+var CHAR_SHARP                = 0x23; /* # */
+var CHAR_PERCENT              = 0x25; /* % */
+var CHAR_AMPERSAND            = 0x26; /* & */
+var CHAR_SINGLE_QUOTE         = 0x27; /* ' */
+var CHAR_ASTERISK             = 0x2A; /* * */
+var CHAR_COMMA                = 0x2C; /* , */
+var CHAR_MINUS                = 0x2D; /* - */
+var CHAR_COLON                = 0x3A; /* : */
+var CHAR_EQUALS               = 0x3D; /* = */
+var CHAR_GREATER_THAN         = 0x3E; /* > */
+var CHAR_QUESTION             = 0x3F; /* ? */
+var CHAR_COMMERCIAL_AT        = 0x40; /* @ */
+var CHAR_LEFT_SQUARE_BRACKET  = 0x5B; /* [ */
+var CHAR_RIGHT_SQUARE_BRACKET = 0x5D; /* ] */
+var CHAR_GRAVE_ACCENT         = 0x60; /* ` */
+var CHAR_LEFT_CURLY_BRACKET   = 0x7B; /* { */
+var CHAR_VERTICAL_LINE        = 0x7C; /* | */
+var CHAR_RIGHT_CURLY_BRACKET  = 0x7D; /* } */
+
+var ESCAPE_SEQUENCES = {};
+
+ESCAPE_SEQUENCES[0x00]   = '\\0';
+ESCAPE_SEQUENCES[0x07]   = '\\a';
+ESCAPE_SEQUENCES[0x08]   = '\\b';
+ESCAPE_SEQUENCES[0x09]   = '\\t';
+ESCAPE_SEQUENCES[0x0A]   = '\\n';
+ESCAPE_SEQUENCES[0x0B]   = '\\v';
+ESCAPE_SEQUENCES[0x0C]   = '\\f';
+ESCAPE_SEQUENCES[0x0D]   = '\\r';
+ESCAPE_SEQUENCES[0x1B]   = '\\e';
+ESCAPE_SEQUENCES[0x22]   = '\\"';
+ESCAPE_SEQUENCES[0x5C]   = '\\\\';
+ESCAPE_SEQUENCES[0x85]   = '\\N';
+ESCAPE_SEQUENCES[0xA0]   = '\\_';
+ESCAPE_SEQUENCES[0x2028] = '\\L';
+ESCAPE_SEQUENCES[0x2029] = '\\P';
+
+var DEPRECATED_BOOLEANS_SYNTAX = [
+  'y', 'Y', 'yes', 'Yes', 'YES', 'on', 'On', 'ON',
+  'n', 'N', 'no', 'No', 'NO', 'off', 'Off', 'OFF'
+];
+
+var DEPRECATED_BASE60_SYNTAX = /^[-+]?[0-9_]+(?::[0-9_]+)+(?:\.[0-9_]*)?$/;
+
+function compileStyleMap(schema, map) {
+  var result, keys, index, length, tag, style, type;
+
+  if (map === null) return {};
+
+  result = {};
+  keys = Object.keys(map);
+
+  for (index = 0, length = keys.length; index < length; index += 1) {
+    tag = keys[index];
+    style = String(map[tag]);
+
+    if (tag.slice(0, 2) === '!!') {
+      tag = 'tag:yaml.org,2002:' + tag.slice(2);
+    }
+    type = schema.compiledTypeMap['fallback'][tag];
+
+    if (type && _hasOwnProperty.call(type.styleAliases, style)) {
+      style = type.styleAliases[style];
+    }
+
+    result[tag] = style;
+  }
+
+  return result;
+}
+
+function encodeHex(character) {
+  var string, handle, length;
+
+  string = character.toString(16).toUpperCase();
+
+  if (character <= 0xFF) {
+    handle = 'x';
+    length = 2;
+  } else if (character <= 0xFFFF) {
+    handle = 'u';
+    length = 4;
+  } else if (character <= 0xFFFFFFFF) {
+    handle = 'U';
+    length = 8;
+  } else {
+    throw new YAMLException('code point within a string may not be greater than 0xFFFFFFFF');
+  }
+
+  return '\\' + handle + common.repeat('0', length - string.length) + string;
+}
+
+
+var QUOTING_TYPE_SINGLE = 1,
+    QUOTING_TYPE_DOUBLE = 2;
+
+function State(options) {
+  this.schema        = options['schema'] || DEFAULT_SCHEMA;
+  this.indent        = Math.max(1, (options['indent'] || 2));
+  this.noArrayIndent = options['noArrayIndent'] || false;
+  this.skipInvalid   = options['skipInvalid'] || false;
+  this.flowLevel     = (common.isNothing(options['flowLevel']) ? -1 : options['flowLevel']);
+  this.styleMap      = compileStyleMap(this.schema, options['styles'] || null);
+  this.sortKeys      = options['sortKeys'] || false;
+  this.lineWidth     = options['lineWidth'] || 80;
+  this.noRefs        = options['noRefs'] || false;
+  this.noCompatMode  = options['noCompatMode'] || false;
+  this.condenseFlow  = options['condenseFlow'] || false;
+  this.quotingType   = options['quotingType'] === '"' ? QUOTING_TYPE_DOUBLE : QUOTING_TYPE_SINGLE;
+  this.forceQuotes   = options['forceQuotes'] || false;
+  this.replacer      = typeof options['replacer'] === 'function' ? options['replacer'] : null;
+
+  this.implicitTypes = this.schema.compiledImplicit;
+  this.explicitTypes = this.schema.compiledExplicit;
+
+  this.tag = null;
+  this.result = '';
+
+  this.duplicates = [];
+  this.usedDuplicates = null;
+}
+
+// Indents every line in a string. Empty lines (\n only) are not indented.
+function indentString(string, spaces) {
+  var ind = common.repeat(' ', spaces),
+      position = 0,
+      next = -1,
+      result = '',
+      line,
+      length = string.length;
+
+  while (position < length) {
+    next = string.indexOf('\n', position);
+    if (next === -1) {
+      line = string.slice(position);
+      position = length;
+    } else {
+      line = string.slice(position, next + 1);
+      position = next + 1;
+    }
+
+    if (line.length && line !== '\n') result += ind;
+
+    result += line;
+  }
+
+  return result;
+}
+
+function generateNextLine(state, level) {
+  return '\n' + common.repeat(' ', state.indent * level);
+}
+
+function testImplicitResolving(state, str) {
+  var index, length, type;
+
+  for (index = 0, length = state.implicitTypes.length; index < length; index += 1) {
+    type = state.implicitTypes[index];
+
+    if (type.resolve(str)) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+// [33] s-white ::= s-space | s-tab
+function isWhitespace(c) {
+  return c === CHAR_SPACE || c === CHAR_TAB;
+}
+
+// Returns true if the character can be printed without escaping.
+// From YAML 1.2: "any allowed characters known to be non-printable
+// should also be escaped. [However,] This isn’t mandatory"
+// Derived from nb-char - \t - #x85 - #xA0 - #x2028 - #x2029.
+function isPrintable(c) {
+  return  (0x00020 <= c && c <= 0x00007E)
+      || ((0x000A1 <= c && c <= 0x00D7FF) && c !== 0x2028 && c !== 0x2029)
+      || ((0x0E000 <= c && c <= 0x00FFFD) && c !== CHAR_BOM)
+      ||  (0x10000 <= c && c <= 0x10FFFF);
+}
+
+// [34] ns-char ::= nb-char - s-white
+// [27] nb-char ::= c-printable - b-char - c-byte-order-mark
+// [26] b-char  ::= b-line-feed | b-carriage-return
+// Including s-white (for some reason, examples doesn't match specs in this aspect)
+// ns-char ::= c-printable - b-line-feed - b-carriage-return - c-byte-order-mark
+function isNsCharOrWhitespace(c) {
+  return isPrintable(c)
+    && c !== CHAR_BOM
+    // - b-char
+    && c !== CHAR_CARRIAGE_RETURN
+    && c !== CHAR_LINE_FEED;
+}
+
+// [127]  ns-plain-safe(c) ::= c = flow-out  ⇒ ns-plain-safe-out
+//                             c = flow-in   ⇒ ns-plain-safe-in
+//                             c = block-key ⇒ ns-plain-safe-out
+//                             c = flow-key  ⇒ ns-plain-safe-in
+// [128] ns-plain-safe-out ::= ns-char
+// [129]  ns-plain-safe-in ::= ns-char - c-flow-indicator
+// [130]  ns-plain-char(c) ::=  ( ns-plain-safe(c) - “:” - “#” )
+//                            | ( /* An ns-char preceding */ “#” )
+//                            | ( “:” /* Followed by an ns-plain-safe(c) */ )
+function isPlainSafe(c, prev, inblock) {
+  var cIsNsCharOrWhitespace = isNsCharOrWhitespace(c);
+  var cIsNsChar = cIsNsCharOrWhitespace && !isWhitespace(c);
+  return (
+    // ns-plain-safe
+    inblock ? // c = flow-in
+      cIsNsCharOrWhitespace
+      : cIsNsCharOrWhitespace
+        // - c-flow-indicator
+        && c !== CHAR_COMMA
+        && c !== CHAR_LEFT_SQUARE_BRACKET
+        && c !== CHAR_RIGHT_SQUARE_BRACKET
+        && c !== CHAR_LEFT_CURLY_BRACKET
+        && c !== CHAR_RIGHT_CURLY_BRACKET
+  )
+    // ns-plain-char
+    && c !== CHAR_SHARP // false on '#'
+    && !(prev === CHAR_COLON && !cIsNsChar) // false on ': '
+    || (isNsCharOrWhitespace(prev) && !isWhitespace(prev) && c === CHAR_SHARP) // change to true on '[^ ]#'
+    || (prev === CHAR_COLON && cIsNsChar); // change to true on ':[^ ]'
+}
+
+// Simplified test for values allowed as the first character in plain style.
+function isPlainSafeFirst(c) {
+  // Uses a subset of ns-char - c-indicator
+  // where ns-char = nb-char - s-white.
+  // No support of ( ( “?” | “:” | “-” ) /* Followed by an ns-plain-safe(c)) */ ) part
+  return isPrintable(c) && c !== CHAR_BOM
+    && !isWhitespace(c) // - s-white
+    // - (c-indicator ::=
+    // “-” | “?” | “:” | “,” | “[” | “]” | “{” | “}”
+    && c !== CHAR_MINUS
+    && c !== CHAR_QUESTION
+    && c !== CHAR_COLON
+    && c !== CHAR_COMMA
+    && c !== CHAR_LEFT_SQUARE_BRACKET
+    && c !== CHAR_RIGHT_SQUARE_BRACKET
+    && c !== CHAR_LEFT_CURLY_BRACKET
+    && c !== CHAR_RIGHT_CURLY_BRACKET
+    // | “#” | “&” | “*” | “!” | “|” | “=” | “>” | “'” | “"”
+    && c !== CHAR_SHARP
+    && c !== CHAR_AMPERSAND
+    && c !== CHAR_ASTERISK
+    && c !== CHAR_EXCLAMATION
+    && c !== CHAR_VERTICAL_LINE
+    && c !== CHAR_EQUALS
+    && c !== CHAR_GREATER_THAN
+    && c !== CHAR_SINGLE_QUOTE
+    && c !== CHAR_DOUBLE_QUOTE
+    // | “%” | “@” | “`”)
+    && c !== CHAR_PERCENT
+    && c !== CHAR_COMMERCIAL_AT
+    && c !== CHAR_GRAVE_ACCENT;
+}
+
+// Simplified test for values allowed as the last character in plain style.
+function isPlainSafeLast(c) {
+  // just not whitespace or colon, it will be checked to be plain character later
+  return !isWhitespace(c) && c !== CHAR_COLON;
+}
+
+// Same as 'string'.codePointAt(pos), but works in older browsers.
+function codePointAt(string, pos) {
+  var first = string.charCodeAt(pos), second;
+  if (first >= 0xD800 && first <= 0xDBFF && pos + 1 < string.length) {
+    second = string.charCodeAt(pos + 1);
+    if (second >= 0xDC00 && second <= 0xDFFF) {
+      // https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
+      return (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
+    }
+  }
+  return first;
+}
+
+// Determines whether block indentation indicator is required.
+function needIndentIndicator(string) {
+  var leadingSpaceRe = /^\n* /;
+  return leadingSpaceRe.test(string);
+}
+
+var STYLE_PLAIN   = 1,
+    STYLE_SINGLE  = 2,
+    STYLE_LITERAL = 3,
+    STYLE_FOLDED  = 4,
+    STYLE_DOUBLE  = 5;
+
+// Determines which scalar styles are possible and returns the preferred style.
+// lineWidth = -1 => no limit.
+// Pre-conditions: str.length > 0.
+// Post-conditions:
+//    STYLE_PLAIN or STYLE_SINGLE => no \n are in the string.
+//    STYLE_LITERAL => no lines are suitable for folding (or lineWidth is -1).
+//    STYLE_FOLDED => a line > lineWidth and can be folded (and lineWidth != -1).
+function chooseScalarStyle(string, singleLineOnly, indentPerLevel, lineWidth,
+  testAmbiguousType, quotingType, forceQuotes, inblock) {
+
+  var i;
+  var char = 0;
+  var prevChar = null;
+  var hasLineBreak = false;
+  var hasFoldableLine = false; // only checked if shouldTrackWidth
+  var shouldTrackWidth = lineWidth !== -1;
+  var previousLineBreak = -1; // count the first line correctly
+  var plain = isPlainSafeFirst(codePointAt(string, 0))
+          && isPlainSafeLast(codePointAt(string, string.length - 1));
+
+  if (singleLineOnly || forceQuotes) {
+    // Case: no block styles.
+    // Check for disallowed characters to rule out plain and single.
+    for (i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
+      char = codePointAt(string, i);
+      if (!isPrintable(char)) {
+        return STYLE_DOUBLE;
+      }
+      plain = plain && isPlainSafe(char, prevChar, inblock);
+      prevChar = char;
+    }
+  } else {
+    // Case: block styles permitted.
+    for (i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
+      char = codePointAt(string, i);
+      if (char === CHAR_LINE_FEED) {
+        hasLineBreak = true;
+        // Check if any line can be folded.
+        if (shouldTrackWidth) {
+          hasFoldableLine = hasFoldableLine ||
+            // Foldable line = too long, and not more-indented.
+            (i - previousLineBreak - 1 > lineWidth &&
+             string[previousLineBreak + 1] !== ' ');
+          previousLineBreak = i;
+        }
+      } else if (!isPrintable(char)) {
+        return STYLE_DOUBLE;
+      }
+      plain = plain && isPlainSafe(char, prevChar, inblock);
+      prevChar = char;
+    }
+    // in case the end is missing a \n
+    hasFoldableLine = hasFoldableLine || (shouldTrackWidth &&
+      (i - previousLineBreak - 1 > lineWidth &&
+       string[previousLineBreak + 1] !== ' '));
+  }
+  // Although every style can represent \n without escaping, prefer block styles
+  // for multiline, since they're more readable and they don't add empty lines.
+  // Also prefer folding a super-long line.
+  if (!hasLineBreak && !hasFoldableLine) {
+    // Strings interpretable as another type have to be quoted;
+    // e.g. the string 'true' vs. the boolean true.
+    if (plain && !forceQuotes && !testAmbiguousType(string)) {
+      return STYLE_PLAIN;
+    }
+    return quotingType === QUOTING_TYPE_DOUBLE ? STYLE_DOUBLE : STYLE_SINGLE;
+  }
+  // Edge case: block indentation indicator can only have one digit.
+  if (indentPerLevel > 9 && needIndentIndicator(string)) {
+    return STYLE_DOUBLE;
+  }
+  // At this point we know block styles are valid.
+  // Prefer literal style unless we want to fold.
+  if (!forceQuotes) {
+    return hasFoldableLine ? STYLE_FOLDED : STYLE_LITERAL;
+  }
+  return quotingType === QUOTING_TYPE_DOUBLE ? STYLE_DOUBLE : STYLE_SINGLE;
+}
+
+// Note: line breaking/folding is implemented for only the folded style.
+// NB. We drop the last trailing newline (if any) of a returned block scalar
+//  since the dumper adds its own newline. This always works:
+//    • No ending newline => unaffected; already using strip "-" chomping.
+//    • Ending newline    => removed then restored.
+//  Importantly, this keeps the "+" chomp indicator from gaining an extra line.
+function writeScalar(state, string, level, iskey, inblock) {
+  state.dump = (function () {
+    if (string.length === 0) {
+      return state.quotingType === QUOTING_TYPE_DOUBLE ? '""' : "''";
+    }
+    if (!state.noCompatMode) {
+      if (DEPRECATED_BOOLEANS_SYNTAX.indexOf(string) !== -1 || DEPRECATED_BASE60_SYNTAX.test(string)) {
+        return state.quotingType === QUOTING_TYPE_DOUBLE ? ('"' + string + '"') : ("'" + string + "'");
+      }
+    }
+
+    var indent = state.indent * Math.max(1, level); // no 0-indent scalars
+    // As indentation gets deeper, let the width decrease monotonically
+    // to the lower bound min(state.lineWidth, 40).
+    // Note that this implies
+    //  state.lineWidth ≤ 40 + state.indent: width is fixed at the lower bound.
+    //  state.lineWidth > 40 + state.indent: width decreases until the lower bound.
+    // This behaves better than a constant minimum width which disallows narrower options,
+    // or an indent threshold which causes the width to suddenly increase.
+    var lineWidth = state.lineWidth === -1
+      ? -1 : Math.max(Math.min(state.lineWidth, 40), state.lineWidth - indent);
+
+    // Without knowing if keys are implicit/explicit, assume implicit for safety.
+    var singleLineOnly = iskey
+      // No block styles in flow mode.
+      || (state.flowLevel > -1 && level >= state.flowLevel);
+    function testAmbiguity(string) {
+      return testImplicitResolving(state, string);
+    }
+
+    switch (chooseScalarStyle(string, singleLineOnly, state.indent, lineWidth,
+      testAmbiguity, state.quotingType, state.forceQuotes && !iskey, inblock)) {
+
+      case STYLE_PLAIN:
+        return string;
+      case STYLE_SINGLE:
+        return "'" + string.replace(/'/g, "''") + "'";
+      case STYLE_LITERAL:
+        return '|' + blockHeader(string, state.indent)
+          + dropEndingNewline(indentString(string, indent));
+      case STYLE_FOLDED:
+        return '>' + blockHeader(string, state.indent)
+          + dropEndingNewline(indentString(foldString(string, lineWidth), indent));
+      case STYLE_DOUBLE:
+        return '"' + escapeString(string, lineWidth) + '"';
+      default:
+        throw new YAMLException('impossible error: invalid scalar style');
+    }
+  }());
+}
+
+// Pre-conditions: string is valid for a block scalar, 1 <= indentPerLevel <= 9.
+function blockHeader(string, indentPerLevel) {
+  var indentIndicator = needIndentIndicator(string) ? String(indentPerLevel) : '';
+
+  // note the special case: the string '\n' counts as a "trailing" empty line.
+  var clip =          string[string.length - 1] === '\n';
+  var keep = clip && (string[string.length - 2] === '\n' || string === '\n');
+  var chomp = keep ? '+' : (clip ? '' : '-');
+
+  return indentIndicator + chomp + '\n';
+}
+
+// (See the note for writeScalar.)
+function dropEndingNewline(string) {
+  return string[string.length - 1] === '\n' ? string.slice(0, -1) : string;
+}
+
+// Note: a long line without a suitable break point will exceed the width limit.
+// Pre-conditions: every char in str isPrintable, str.length > 0, width > 0.
+function foldString(string, width) {
+  // In folded style, $k$ consecutive newlines output as $k+1$ newlines—
+  // unless they're before or after a more-indented line, or at the very
+  // beginning or end, in which case $k$ maps to $k$.
+  // Therefore, parse each chunk as newline(s) followed by a content line.
+  var lineRe = /(\n+)([^\n]*)/g;
+
+  // first line (possibly an empty line)
+  var result = (function () {
+    var nextLF = string.indexOf('\n');
+    nextLF = nextLF !== -1 ? nextLF : string.length;
+    lineRe.lastIndex = nextLF;
+    return foldLine(string.slice(0, nextLF), width);
+  }());
+  // If we haven't reached the first content line yet, don't add an extra \n.
+  var prevMoreIndented = string[0] === '\n' || string[0] === ' ';
+  var moreIndented;
+
+  // rest of the lines
+  var match;
+  while ((match = lineRe.exec(string))) {
+    var prefix = match[1], line = match[2];
+    moreIndented = (line[0] === ' ');
+    result += prefix
+      + (!prevMoreIndented && !moreIndented && line !== ''
+        ? '\n' : '')
+      + foldLine(line, width);
+    prevMoreIndented = moreIndented;
+  }
+
+  return result;
+}
+
+// Greedy line breaking.
+// Picks the longest line under the limit each time,
+// otherwise settles for the shortest line over the limit.
+// NB. More-indented lines *cannot* be folded, as that would add an extra \n.
+function foldLine(line, width) {
+  if (line === '' || line[0] === ' ') return line;
+
+  // Since a more-indented line adds a \n, breaks can't be followed by a space.
+  var breakRe = / [^ ]/g; // note: the match index will always be <= length-2.
+  var match;
+  // start is an inclusive index. end, curr, and next are exclusive.
+  var start = 0, end, curr = 0, next = 0;
+  var result = '';
+
+  // Invariants: 0 <= start <= length-1.
+  //   0 <= curr <= next <= max(0, length-2). curr - start <= width.
+  // Inside the loop:
+  //   A match implies length >= 2, so curr and next are <= length-2.
+  while ((match = breakRe.exec(line))) {
+    next = match.index;
+    // maintain invariant: curr - start <= width
+    if (next - start > width) {
+      end = (curr > start) ? curr : next; // derive end <= length-2
+      result += '\n' + line.slice(start, end);
+      // skip the space that was output as \n
+      start = end + 1;                    // derive start <= length-1
+    }
+    curr = next;
+  }
+
+  // By the invariants, start <= length-1, so there is something left over.
+  // It is either the whole string or a part starting from non-whitespace.
+  result += '\n';
+  // Insert a break if the remainder is too long and there is a break available.
+  if (line.length - start > width && curr > start) {
+    result += line.slice(start, curr) + '\n' + line.slice(curr + 1);
+  } else {
+    result += line.slice(start);
+  }
+
+  return result.slice(1); // drop extra \n joiner
+}
+
+// Escapes a double-quoted string.
+function escapeString(string) {
+  var result = '';
+  var char = 0;
+  var escapeSeq;
+
+  for (var i = 0; i < string.length; char >= 0x10000 ? i += 2 : i++) {
+    char = codePointAt(string, i);
+    escapeSeq = ESCAPE_SEQUENCES[char];
+
+    if (!escapeSeq && isPrintable(char)) {
+      result += string[i];
+      if (char >= 0x10000) result += string[i + 1];
+    } else {
+      result += escapeSeq || encodeHex(char);
+    }
+  }
+
+  return result;
+}
+
+function writeFlowSequence(state, level, object) {
+  var _result = '',
+      _tag    = state.tag,
+      index,
+      length,
+      value;
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    value = object[index];
+
+    if (state.replacer) {
+      value = state.replacer.call(object, String(index), value);
+    }
+
+    // Write only valid elements, put null instead of invalid elements.
+    if (writeNode(state, level, value, false, false) ||
+        (typeof value === 'undefined' &&
+         writeNode(state, level, null, false, false))) {
+
+      if (_result !== '') _result += ',' + (!state.condenseFlow ? ' ' : '');
+      _result += state.dump;
+    }
+  }
+
+  state.tag = _tag;
+  state.dump = '[' + _result + ']';
+}
+
+function writeBlockSequence(state, level, object, compact) {
+  var _result = '',
+      _tag    = state.tag,
+      index,
+      length,
+      value;
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    value = object[index];
+
+    if (state.replacer) {
+      value = state.replacer.call(object, String(index), value);
+    }
+
+    // Write only valid elements, put null instead of invalid elements.
+    if (writeNode(state, level + 1, value, true, true, false, true) ||
+        (typeof value === 'undefined' &&
+         writeNode(state, level + 1, null, true, true, false, true))) {
+
+      if (!compact || _result !== '') {
+        _result += generateNextLine(state, level);
+      }
+
+      if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
+        _result += '-';
+      } else {
+        _result += '- ';
+      }
+
+      _result += state.dump;
+    }
+  }
+
+  state.tag = _tag;
+  state.dump = _result || '[]'; // Empty sequence if no valid values.
+}
+
+function writeFlowMapping(state, level, object) {
+  var _result       = '',
+      _tag          = state.tag,
+      objectKeyList = Object.keys(object),
+      index,
+      length,
+      objectKey,
+      objectValue,
+      pairBuffer;
+
+  for (index = 0, length = objectKeyList.length; index < length; index += 1) {
+
+    pairBuffer = '';
+    if (_result !== '') pairBuffer += ', ';
+
+    if (state.condenseFlow) pairBuffer += '"';
+
+    objectKey = objectKeyList[index];
+    objectValue = object[objectKey];
+
+    if (state.replacer) {
+      objectValue = state.replacer.call(object, objectKey, objectValue);
+    }
+
+    if (!writeNode(state, level, objectKey, false, false)) {
+      continue; // Skip this pair because of invalid key;
+    }
+
+    if (state.dump.length > 1024) pairBuffer += '? ';
+
+    pairBuffer += state.dump + (state.condenseFlow ? '"' : '') + ':' + (state.condenseFlow ? '' : ' ');
+
+    if (!writeNode(state, level, objectValue, false, false)) {
+      continue; // Skip this pair because of invalid value.
+    }
+
+    pairBuffer += state.dump;
+
+    // Both key and value are valid.
+    _result += pairBuffer;
+  }
+
+  state.tag = _tag;
+  state.dump = '{' + _result + '}';
+}
+
+function writeBlockMapping(state, level, object, compact) {
+  var _result       = '',
+      _tag          = state.tag,
+      objectKeyList = Object.keys(object),
+      index,
+      length,
+      objectKey,
+      objectValue,
+      explicitPair,
+      pairBuffer;
+
+  // Allow sorting keys so that the output file is deterministic
+  if (state.sortKeys === true) {
+    // Default sorting
+    objectKeyList.sort();
+  } else if (typeof state.sortKeys === 'function') {
+    // Custom sort function
+    objectKeyList.sort(state.sortKeys);
+  } else if (state.sortKeys) {
+    // Something is wrong
+    throw new YAMLException('sortKeys must be a boolean or a function');
+  }
+
+  for (index = 0, length = objectKeyList.length; index < length; index += 1) {
+    pairBuffer = '';
+
+    if (!compact || _result !== '') {
+      pairBuffer += generateNextLine(state, level);
+    }
+
+    objectKey = objectKeyList[index];
+    objectValue = object[objectKey];
+
+    if (state.replacer) {
+      objectValue = state.replacer.call(object, objectKey, objectValue);
+    }
+
+    if (!writeNode(state, level + 1, objectKey, true, true, true)) {
+      continue; // Skip this pair because of invalid key.
+    }
+
+    explicitPair = (state.tag !== null && state.tag !== '?') ||
+                   (state.dump && state.dump.length > 1024);
+
+    if (explicitPair) {
+      if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
+        pairBuffer += '?';
+      } else {
+        pairBuffer += '? ';
+      }
+    }
+
+    pairBuffer += state.dump;
+
+    if (explicitPair) {
+      pairBuffer += generateNextLine(state, level);
+    }
+
+    if (!writeNode(state, level + 1, objectValue, true, explicitPair)) {
+      continue; // Skip this pair because of invalid value.
+    }
+
+    if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
+      pairBuffer += ':';
+    } else {
+      pairBuffer += ': ';
+    }
+
+    pairBuffer += state.dump;
+
+    // Both key and value are valid.
+    _result += pairBuffer;
+  }
+
+  state.tag = _tag;
+  state.dump = _result || '{}'; // Empty mapping if no valid pairs.
+}
+
+function detectType(state, object, explicit) {
+  var _result, typeList, index, length, type, style;
+
+  typeList = explicit ? state.explicitTypes : state.implicitTypes;
+
+  for (index = 0, length = typeList.length; index < length; index += 1) {
+    type = typeList[index];
+
+    if ((type.instanceOf  || type.predicate) &&
+        (!type.instanceOf || ((typeof object === 'object') && (object instanceof type.instanceOf))) &&
+        (!type.predicate  || type.predicate(object))) {
+
+      if (explicit) {
+        if (type.multi && type.representName) {
+          state.tag = type.representName(object);
+        } else {
+          state.tag = type.tag;
+        }
+      } else {
+        state.tag = '?';
+      }
+
+      if (type.represent) {
+        style = state.styleMap[type.tag] || type.defaultStyle;
+
+        if (_toString.call(type.represent) === '[object Function]') {
+          _result = type.represent(object, style);
+        } else if (_hasOwnProperty.call(type.represent, style)) {
+          _result = type.represent[style](object, style);
+        } else {
+          throw new YAMLException('!<' + type.tag + '> tag resolver accepts not "' + style + '" style');
+        }
+
+        state.dump = _result;
+      }
+
+      return true;
+    }
+  }
+
+  return false;
+}
+
+// Serializes `object` and writes it to global `result`.
+// Returns true on success, or false on invalid object.
+//
+function writeNode(state, level, object, block, compact, iskey, isblockseq) {
+  state.tag = null;
+  state.dump = object;
+
+  if (!detectType(state, object, false)) {
+    detectType(state, object, true);
+  }
+
+  var type = _toString.call(state.dump);
+  var inblock = block;
+  var tagStr;
+
+  if (block) {
+    block = (state.flowLevel < 0 || state.flowLevel > level);
+  }
+
+  var objectOrArray = type === '[object Object]' || type === '[object Array]',
+      duplicateIndex,
+      duplicate;
+
+  if (objectOrArray) {
+    duplicateIndex = state.duplicates.indexOf(object);
+    duplicate = duplicateIndex !== -1;
+  }
+
+  if ((state.tag !== null && state.tag !== '?') || duplicate || (state.indent !== 2 && level > 0)) {
+    compact = false;
+  }
+
+  if (duplicate && state.usedDuplicates[duplicateIndex]) {
+    state.dump = '*ref_' + duplicateIndex;
+  } else {
+    if (objectOrArray && duplicate && !state.usedDuplicates[duplicateIndex]) {
+      state.usedDuplicates[duplicateIndex] = true;
+    }
+    if (type === '[object Object]') {
+      if (block && (Object.keys(state.dump).length !== 0)) {
+        writeBlockMapping(state, level, state.dump, compact);
+        if (duplicate) {
+          state.dump = '&ref_' + duplicateIndex + state.dump;
+        }
+      } else {
+        writeFlowMapping(state, level, state.dump);
+        if (duplicate) {
+          state.dump = '&ref_' + duplicateIndex + ' ' + state.dump;
+        }
+      }
+    } else if (type === '[object Array]') {
+      if (block && (state.dump.length !== 0)) {
+        if (state.noArrayIndent && !isblockseq && level > 0) {
+          writeBlockSequence(state, level - 1, state.dump, compact);
+        } else {
+          writeBlockSequence(state, level, state.dump, compact);
+        }
+        if (duplicate) {
+          state.dump = '&ref_' + duplicateIndex + state.dump;
+        }
+      } else {
+        writeFlowSequence(state, level, state.dump);
+        if (duplicate) {
+          state.dump = '&ref_' + duplicateIndex + ' ' + state.dump;
+        }
+      }
+    } else if (type === '[object String]') {
+      if (state.tag !== '?') {
+        writeScalar(state, state.dump, level, iskey, inblock);
+      }
+    } else if (type === '[object Undefined]') {
+      return false;
+    } else {
+      if (state.skipInvalid) return false;
+      throw new YAMLException('unacceptable kind of an object to dump ' + type);
+    }
+
+    if (state.tag !== null && state.tag !== '?') {
+      // Need to encode all characters except those allowed by the spec:
+      //
+      // [35] ns-dec-digit    ::=  [#x30-#x39] /* 0-9 */
+      // [36] ns-hex-digit    ::=  ns-dec-digit
+      //                         | [#x41-#x46] /* A-F */ | [#x61-#x66] /* a-f */
+      // [37] ns-ascii-letter ::=  [#x41-#x5A] /* A-Z */ | [#x61-#x7A] /* a-z */
+      // [38] ns-word-char    ::=  ns-dec-digit | ns-ascii-letter | “-”
+      // [39] ns-uri-char     ::=  “%” ns-hex-digit ns-hex-digit | ns-word-char | “#”
+      //                         | “;” | “/” | “?” | “:” | “@” | “&” | “=” | “+” | “$” | “,”
+      //                         | “_” | “.” | “!” | “~” | “*” | “'” | “(” | “)” | “[” | “]”
+      //
+      // Also need to encode '!' because it has special meaning (end of tag prefix).
+      //
+      tagStr = encodeURI(
+        state.tag[0] === '!' ? state.tag.slice(1) : state.tag
+      ).replace(/!/g, '%21');
+
+      if (state.tag[0] === '!') {
+        tagStr = '!' + tagStr;
+      } else if (tagStr.slice(0, 18) === 'tag:yaml.org,2002:') {
+        tagStr = '!!' + tagStr.slice(18);
+      } else {
+        tagStr = '!<' + tagStr + '>';
+      }
+
+      state.dump = tagStr + ' ' + state.dump;
+    }
+  }
+
+  return true;
+}
+
+function getDuplicateReferences(object, state) {
+  var objects = [],
+      duplicatesIndexes = [],
+      index,
+      length;
+
+  inspectNode(object, objects, duplicatesIndexes);
+
+  for (index = 0, length = duplicatesIndexes.length; index < length; index += 1) {
+    state.duplicates.push(objects[duplicatesIndexes[index]]);
+  }
+  state.usedDuplicates = new Array(length);
+}
+
+function inspectNode(object, objects, duplicatesIndexes) {
+  var objectKeyList,
+      index,
+      length;
+
+  if (object !== null && typeof object === 'object') {
+    index = objects.indexOf(object);
+    if (index !== -1) {
+      if (duplicatesIndexes.indexOf(index) === -1) {
+        duplicatesIndexes.push(index);
+      }
+    } else {
+      objects.push(object);
+
+      if (Array.isArray(object)) {
+        for (index = 0, length = object.length; index < length; index += 1) {
+          inspectNode(object[index], objects, duplicatesIndexes);
+        }
+      } else {
+        objectKeyList = Object.keys(object);
+
+        for (index = 0, length = objectKeyList.length; index < length; index += 1) {
+          inspectNode(object[objectKeyList[index]], objects, duplicatesIndexes);
+        }
+      }
+    }
+  }
+}
+
+function dump(input, options) {
+  options = options || {};
+
+  var state = new State(options);
+
+  if (!state.noRefs) getDuplicateReferences(input, state);
+
+  var value = input;
+
+  if (state.replacer) {
+    value = state.replacer.call({ '': value }, '', value);
+  }
+
+  if (writeNode(state, 0, value, true, true)) return state.dump + '\n';
+
+  return '';
+}
+
+module.exports.dump = dump;
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/exception.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/exception.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/exception.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,55 @@
+// YAML error class. http://stackoverflow.com/questions/8458984
+//
+'use strict';
+
+
+function formatError(exception, compact) {
+  var where = '', message = exception.reason || '(unknown reason)';
+
+  if (!exception.mark) return message;
+
+  if (exception.mark.name) {
+    where += 'in "' + exception.mark.name + '" ';
+  }
+
+  where += '(' + (exception.mark.line + 1) + ':' + (exception.mark.column + 1) + ')';
+
+  if (!compact && exception.mark.snippet) {
+    where += '\n\n' + exception.mark.snippet;
+  }
+
+  return message + ' ' + where;
+}
+
+
+function YAMLException(reason, mark) {
+  // Super constructor
+  Error.call(this);
+
+  this.name = 'YAMLException';
+  this.reason = reason;
+  this.mark = mark;
+  this.message = formatError(this, false);
+
+  // Include stack trace in error object
+  if (Error.captureStackTrace) {
+    // Chrome and NodeJS
+    Error.captureStackTrace(this, this.constructor);
+  } else {
+    // FF, IE 10+ and Safari 6+. Fallback for others
+    this.stack = (new Error()).stack || '';
+  }
+}
+
+
+// Inherit from Error
+YAMLException.prototype = Object.create(Error.prototype);
+YAMLException.prototype.constructor = YAMLException;
+
+
+YAMLException.prototype.toString = function toString(compact) {
+  return this.name + ': ' + formatError(this, compact);
+};
+
+
+module.exports = YAMLException;
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/loader.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/loader.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/loader.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,1733 @@
+'use strict';
+
+/*eslint-disable max-len,no-use-before-define*/
+
+var common              = require('./common');
+var YAMLException       = require('./exception');
+var makeSnippet         = require('./snippet');
+var DEFAULT_SCHEMA      = require('./schema/default');
+
+
+var _hasOwnProperty = Object.prototype.hasOwnProperty;
+
+
+var CONTEXT_FLOW_IN   = 1;
+var CONTEXT_FLOW_OUT  = 2;
+var CONTEXT_BLOCK_IN  = 3;
+var CONTEXT_BLOCK_OUT = 4;
+
+
+var CHOMPING_CLIP  = 1;
+var CHOMPING_STRIP = 2;
+var CHOMPING_KEEP  = 3;
+
+
+var PATTERN_NON_PRINTABLE         = /[\x00-\x08\x0B\x0C\x0E-\x1F\x7F-\x84\x86-\x9F\uFFFE\uFFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]/;
+var PATTERN_NON_ASCII_LINE_BREAKS = /[\x85\u2028\u2029]/;
+var PATTERN_FLOW_INDICATORS       = /[,\[\]\{\}]/;
+var PATTERN_TAG_HANDLE            = /^(?:!|!!|![a-z\-]+!)$/i;
+var PATTERN_TAG_URI               = /^(?:!|[^,\[\]\{\}])(?:%[0-9a-f]{2}|[0-9a-z\-#;\/\?:@&=\+\$,_\.!~\*'\(\)\[\]])*$/i;
+
+
+function _class(obj) { return Object.prototype.toString.call(obj); }
+
+function is_EOL(c) {
+  return (c === 0x0A/* LF */) || (c === 0x0D/* CR */);
+}
+
+function is_WHITE_SPACE(c) {
+  return (c === 0x09/* Tab */) || (c === 0x20/* Space */);
+}
+
+function is_WS_OR_EOL(c) {
+  return (c === 0x09/* Tab */) ||
+         (c === 0x20/* Space */) ||
+         (c === 0x0A/* LF */) ||
+         (c === 0x0D/* CR */);
+}
+
+function is_FLOW_INDICATOR(c) {
+  return c === 0x2C/* , */ ||
+         c === 0x5B/* [ */ ||
+         c === 0x5D/* ] */ ||
+         c === 0x7B/* { */ ||
+         c === 0x7D/* } */;
+}
+
+function fromHexCode(c) {
+  var lc;
+
+  if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) {
+    return c - 0x30;
+  }
+
+  /*eslint-disable no-bitwise*/
+  lc = c | 0x20;
+
+  if ((0x61/* a */ <= lc) && (lc <= 0x66/* f */)) {
+    return lc - 0x61 + 10;
+  }
+
+  return -1;
+}
+
+function escapedHexLen(c) {
+  if (c === 0x78/* x */) { return 2; }
+  if (c === 0x75/* u */) { return 4; }
+  if (c === 0x55/* U */) { return 8; }
+  return 0;
+}
+
+function fromDecimalCode(c) {
+  if ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) {
+    return c - 0x30;
+  }
+
+  return -1;
+}
+
+function simpleEscapeSequence(c) {
+  /* eslint-disable indent */
+  return (c === 0x30/* 0 */) ? '\x00' :
+        (c === 0x61/* a */) ? '\x07' :
+        (c === 0x62/* b */) ? '\x08' :
+        (c === 0x74/* t */) ? '\x09' :
+        (c === 0x09/* Tab */) ? '\x09' :
+        (c === 0x6E/* n */) ? '\x0A' :
+        (c === 0x76/* v */) ? '\x0B' :
+        (c === 0x66/* f */) ? '\x0C' :
+        (c === 0x72/* r */) ? '\x0D' :
+        (c === 0x65/* e */) ? '\x1B' :
+        (c === 0x20/* Space */) ? ' ' :
+        (c === 0x22/* " */) ? '\x22' :
+        (c === 0x2F/* / */) ? '/' :
+        (c === 0x5C/* \ */) ? '\x5C' :
+        (c === 0x4E/* N */) ? '\x85' :
+        (c === 0x5F/* _ */) ? '\xA0' :
+        (c === 0x4C/* L */) ? '\u2028' :
+        (c === 0x50/* P */) ? '\u2029' : '';
+}
+
+function charFromCodepoint(c) {
+  if (c <= 0xFFFF) {
+    return String.fromCharCode(c);
+  }
+  // Encode UTF-16 surrogate pair
+  // https://en.wikipedia.org/wiki/UTF-16#Code_points_U.2B010000_to_U.2B10FFFF
+  return String.fromCharCode(
+    ((c - 0x010000) >> 10) + 0xD800,
+    ((c - 0x010000) & 0x03FF) + 0xDC00
+  );
+}
+
+// set a property of a literal object, while protecting against prototype pollution,
+// see https://github.com/nodeca/js-yaml/issues/164 for more details
+function setProperty(object, key, value) {
+  // used for this specific key only because Object.defineProperty is slow
+  if (key === '__proto__') {
+    Object.defineProperty(object, key, {
+      configurable: true,
+      enumerable: true,
+      writable: true,
+      value: value
+    });
+  } else {
+    object[key] = value;
+  }
+}
+
+var simpleEscapeCheck = new Array(256); // integer, for fast access
+var simpleEscapeMap = new Array(256);
+for (var i = 0; i < 256; i++) {
+  simpleEscapeCheck[i] = simpleEscapeSequence(i) ? 1 : 0;
+  simpleEscapeMap[i] = simpleEscapeSequence(i);
+}
+
+
+function State(input, options) {
+  this.input = input;
+
+  this.filename  = options['filename']  || null;
+  this.schema    = options['schema']    || DEFAULT_SCHEMA;
+  this.onWarning = options['onWarning'] || null;
+  // (Hidden) Remove? makes the loader to expect YAML 1.1 documents
+  // if such documents have no explicit %YAML directive
+  this.legacy    = options['legacy']    || false;
+
+  this.json      = options['json']      || false;
+  this.listener  = options['listener']  || null;
+
+  this.implicitTypes = this.schema.compiledImplicit;
+  this.typeMap       = this.schema.compiledTypeMap;
+
+  this.length     = input.length;
+  this.position   = 0;
+  this.line       = 0;
+  this.lineStart  = 0;
+  this.lineIndent = 0;
+
+  // position of first leading tab in the current line,
+  // used to make sure there are no tabs in the indentation
+  this.firstTabInLine = -1;
+
+  this.documents = [];
+
+  /*
+  this.version;
+  this.checkLineBreaks;
+  this.tagMap;
+  this.anchorMap;
+  this.tag;
+  this.anchor;
+  this.kind;
+  this.result;*/
+
+}
+
+
+function generateError(state, message) {
+  var mark = {
+    name:     state.filename,
+    buffer:   state.input.slice(0, -1), // omit trailing \0
+    position: state.position,
+    line:     state.line,
+    column:   state.position - state.lineStart
+  };
+
+  mark.snippet = makeSnippet(mark);
+
+  return new YAMLException(message, mark);
+}
+
+function throwError(state, message) {
+  throw generateError(state, message);
+}
+
+function throwWarning(state, message) {
+  if (state.onWarning) {
+    state.onWarning.call(null, generateError(state, message));
+  }
+}
+
+
+var directiveHandlers = {
+
+  YAML: function handleYamlDirective(state, name, args) {
+
+    var match, major, minor;
+
+    if (state.version !== null) {
+      throwError(state, 'duplication of %YAML directive');
+    }
+
+    if (args.length !== 1) {
+      throwError(state, 'YAML directive accepts exactly one argument');
+    }
+
+    match = /^([0-9]+)\.([0-9]+)$/.exec(args[0]);
+
+    if (match === null) {
+      throwError(state, 'ill-formed argument of the YAML directive');
+    }
+
+    major = parseInt(match[1], 10);
+    minor = parseInt(match[2], 10);
+
+    if (major !== 1) {
+      throwError(state, 'unacceptable YAML version of the document');
+    }
+
+    state.version = args[0];
+    state.checkLineBreaks = (minor < 2);
+
+    if (minor !== 1 && minor !== 2) {
+      throwWarning(state, 'unsupported YAML version of the document');
+    }
+  },
+
+  TAG: function handleTagDirective(state, name, args) {
+
+    var handle, prefix;
+
+    if (args.length !== 2) {
+      throwError(state, 'TAG directive accepts exactly two arguments');
+    }
+
+    handle = args[0];
+    prefix = args[1];
+
+    if (!PATTERN_TAG_HANDLE.test(handle)) {
+      throwError(state, 'ill-formed tag handle (first argument) of the TAG directive');
+    }
+
+    if (_hasOwnProperty.call(state.tagMap, handle)) {
+      throwError(state, 'there is a previously declared suffix for "' + handle + '" tag handle');
+    }
+
+    if (!PATTERN_TAG_URI.test(prefix)) {
+      throwError(state, 'ill-formed tag prefix (second argument) of the TAG directive');
+    }
+
+    try {
+      prefix = decodeURIComponent(prefix);
+    } catch (err) {
+      throwError(state, 'tag prefix is malformed: ' + prefix);
+    }
+
+    state.tagMap[handle] = prefix;
+  }
+};
+
+
+function captureSegment(state, start, end, checkJson) {
+  var _position, _length, _character, _result;
+
+  if (start < end) {
+    _result = state.input.slice(start, end);
+
+    if (checkJson) {
+      for (_position = 0, _length = _result.length; _position < _length; _position += 1) {
+        _character = _result.charCodeAt(_position);
+        if (!(_character === 0x09 ||
+              (0x20 <= _character && _character <= 0x10FFFF))) {
+          throwError(state, 'expected valid JSON character');
+        }
+      }
+    } else if (PATTERN_NON_PRINTABLE.test(_result)) {
+      throwError(state, 'the stream contains non-printable characters');
+    }
+
+    state.result += _result;
+  }
+}
+
+function mergeMappings(state, destination, source, overridableKeys) {
+  var sourceKeys, key, index, quantity;
+
+  if (!common.isObject(source)) {
+    throwError(state, 'cannot merge mappings; the provided source object is unacceptable');
+  }
+
+  sourceKeys = Object.keys(source);
+
+  for (index = 0, quantity = sourceKeys.length; index < quantity; index += 1) {
+    key = sourceKeys[index];
+
+    if (!_hasOwnProperty.call(destination, key)) {
+      setProperty(destination, key, source[key]);
+      overridableKeys[key] = true;
+    }
+  }
+}
+
+function storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode,
+  startLine, startLineStart, startPos) {
+
+  var index, quantity;
+
+  // The output is a plain object here, so keys can only be strings.
+  // We need to convert keyNode to a string, but doing so can hang the process
+  // (deeply nested arrays that explode exponentially using aliases).
+  if (Array.isArray(keyNode)) {
+    keyNode = Array.prototype.slice.call(keyNode);
+
+    for (index = 0, quantity = keyNode.length; index < quantity; index += 1) {
+      if (Array.isArray(keyNode[index])) {
+        throwError(state, 'nested arrays are not supported inside keys');
+      }
+
+      if (typeof keyNode === 'object' && _class(keyNode[index]) === '[object Object]') {
+        keyNode[index] = '[object Object]';
+      }
+    }
+  }
+
+  // Avoid code execution in load() via toString property
+  // (still use its own toString for arrays, timestamps,
+  // and whatever user schema extensions happen to have @@toStringTag)
+  if (typeof keyNode === 'object' && _class(keyNode) === '[object Object]') {
+    keyNode = '[object Object]';
+  }
+
+
+  keyNode = String(keyNode);
+
+  if (_result === null) {
+    _result = {};
+  }
+
+  if (keyTag === 'tag:yaml.org,2002:merge') {
+    if (Array.isArray(valueNode)) {
+      for (index = 0, quantity = valueNode.length; index < quantity; index += 1) {
+        mergeMappings(state, _result, valueNode[index], overridableKeys);
+      }
+    } else {
+      mergeMappings(state, _result, valueNode, overridableKeys);
+    }
+  } else {
+    if (!state.json &&
+        !_hasOwnProperty.call(overridableKeys, keyNode) &&
+        _hasOwnProperty.call(_result, keyNode)) {
+      state.line = startLine || state.line;
+      state.lineStart = startLineStart || state.lineStart;
+      state.position = startPos || state.position;
+      throwError(state, 'duplicated mapping key');
+    }
+
+    setProperty(_result, keyNode, valueNode);
+    delete overridableKeys[keyNode];
+  }
+
+  return _result;
+}
+
+function readLineBreak(state) {
+  var ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch === 0x0A/* LF */) {
+    state.position++;
+  } else if (ch === 0x0D/* CR */) {
+    state.position++;
+    if (state.input.charCodeAt(state.position) === 0x0A/* LF */) {
+      state.position++;
+    }
+  } else {
+    throwError(state, 'a line break is expected');
+  }
+
+  state.line += 1;
+  state.lineStart = state.position;
+  state.firstTabInLine = -1;
+}
+
+function skipSeparationSpace(state, allowComments, checkIndent) {
+  var lineBreaks = 0,
+      ch = state.input.charCodeAt(state.position);
+
+  while (ch !== 0) {
+    while (is_WHITE_SPACE(ch)) {
+      if (ch === 0x09/* Tab */ && state.firstTabInLine === -1) {
+        state.firstTabInLine = state.position;
+      }
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    if (allowComments && ch === 0x23/* # */) {
+      do {
+        ch = state.input.charCodeAt(++state.position);
+      } while (ch !== 0x0A/* LF */ && ch !== 0x0D/* CR */ && ch !== 0);
+    }
+
+    if (is_EOL(ch)) {
+      readLineBreak(state);
+
+      ch = state.input.charCodeAt(state.position);
+      lineBreaks++;
+      state.lineIndent = 0;
+
+      while (ch === 0x20/* Space */) {
+        state.lineIndent++;
+        ch = state.input.charCodeAt(++state.position);
+      }
+    } else {
+      break;
+    }
+  }
+
+  if (checkIndent !== -1 && lineBreaks !== 0 && state.lineIndent < checkIndent) {
+    throwWarning(state, 'deficient indentation');
+  }
+
+  return lineBreaks;
+}
+
+function testDocumentSeparator(state) {
+  var _position = state.position,
+      ch;
+
+  ch = state.input.charCodeAt(_position);
+
+  // Condition state.position === state.lineStart is tested
+  // in parent on each call, for efficiency. No needs to test here again.
+  if ((ch === 0x2D/* - */ || ch === 0x2E/* . */) &&
+      ch === state.input.charCodeAt(_position + 1) &&
+      ch === state.input.charCodeAt(_position + 2)) {
+
+    _position += 3;
+
+    ch = state.input.charCodeAt(_position);
+
+    if (ch === 0 || is_WS_OR_EOL(ch)) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+function writeFoldedLines(state, count) {
+  if (count === 1) {
+    state.result += ' ';
+  } else if (count > 1) {
+    state.result += common.repeat('\n', count - 1);
+  }
+}
+
+
+function readPlainScalar(state, nodeIndent, withinFlowCollection) {
+  var preceding,
+      following,
+      captureStart,
+      captureEnd,
+      hasPendingContent,
+      _line,
+      _lineStart,
+      _lineIndent,
+      _kind = state.kind,
+      _result = state.result,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (is_WS_OR_EOL(ch)      ||
+      is_FLOW_INDICATOR(ch) ||
+      ch === 0x23/* # */    ||
+      ch === 0x26/* & */    ||
+      ch === 0x2A/* * */    ||
+      ch === 0x21/* ! */    ||
+      ch === 0x7C/* | */    ||
+      ch === 0x3E/* > */    ||
+      ch === 0x27/* ' */    ||
+      ch === 0x22/* " */    ||
+      ch === 0x25/* % */    ||
+      ch === 0x40/* @ */    ||
+      ch === 0x60/* ` */) {
+    return false;
+  }
+
+  if (ch === 0x3F/* ? */ || ch === 0x2D/* - */) {
+    following = state.input.charCodeAt(state.position + 1);
+
+    if (is_WS_OR_EOL(following) ||
+        withinFlowCollection && is_FLOW_INDICATOR(following)) {
+      return false;
+    }
+  }
+
+  state.kind = 'scalar';
+  state.result = '';
+  captureStart = captureEnd = state.position;
+  hasPendingContent = false;
+
+  while (ch !== 0) {
+    if (ch === 0x3A/* : */) {
+      following = state.input.charCodeAt(state.position + 1);
+
+      if (is_WS_OR_EOL(following) ||
+          withinFlowCollection && is_FLOW_INDICATOR(following)) {
+        break;
+      }
+
+    } else if (ch === 0x23/* # */) {
+      preceding = state.input.charCodeAt(state.position - 1);
+
+      if (is_WS_OR_EOL(preceding)) {
+        break;
+      }
+
+    } else if ((state.position === state.lineStart && testDocumentSeparator(state)) ||
+               withinFlowCollection && is_FLOW_INDICATOR(ch)) {
+      break;
+
+    } else if (is_EOL(ch)) {
+      _line = state.line;
+      _lineStart = state.lineStart;
+      _lineIndent = state.lineIndent;
+      skipSeparationSpace(state, false, -1);
+
+      if (state.lineIndent >= nodeIndent) {
+        hasPendingContent = true;
+        ch = state.input.charCodeAt(state.position);
+        continue;
+      } else {
+        state.position = captureEnd;
+        state.line = _line;
+        state.lineStart = _lineStart;
+        state.lineIndent = _lineIndent;
+        break;
+      }
+    }
+
+    if (hasPendingContent) {
+      captureSegment(state, captureStart, captureEnd, false);
+      writeFoldedLines(state, state.line - _line);
+      captureStart = captureEnd = state.position;
+      hasPendingContent = false;
+    }
+
+    if (!is_WHITE_SPACE(ch)) {
+      captureEnd = state.position + 1;
+    }
+
+    ch = state.input.charCodeAt(++state.position);
+  }
+
+  captureSegment(state, captureStart, captureEnd, false);
+
+  if (state.result) {
+    return true;
+  }
+
+  state.kind = _kind;
+  state.result = _result;
+  return false;
+}
+
+function readSingleQuotedScalar(state, nodeIndent) {
+  var ch,
+      captureStart, captureEnd;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x27/* ' */) {
+    return false;
+  }
+
+  state.kind = 'scalar';
+  state.result = '';
+  state.position++;
+  captureStart = captureEnd = state.position;
+
+  while ((ch = state.input.charCodeAt(state.position)) !== 0) {
+    if (ch === 0x27/* ' */) {
+      captureSegment(state, captureStart, state.position, true);
+      ch = state.input.charCodeAt(++state.position);
+
+      if (ch === 0x27/* ' */) {
+        captureStart = state.position;
+        state.position++;
+        captureEnd = state.position;
+      } else {
+        return true;
+      }
+
+    } else if (is_EOL(ch)) {
+      captureSegment(state, captureStart, captureEnd, true);
+      writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
+      captureStart = captureEnd = state.position;
+
+    } else if (state.position === state.lineStart && testDocumentSeparator(state)) {
+      throwError(state, 'unexpected end of the document within a single quoted scalar');
+
+    } else {
+      state.position++;
+      captureEnd = state.position;
+    }
+  }
+
+  throwError(state, 'unexpected end of the stream within a single quoted scalar');
+}
+
+function readDoubleQuotedScalar(state, nodeIndent) {
+  var captureStart,
+      captureEnd,
+      hexLength,
+      hexResult,
+      tmp,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x22/* " */) {
+    return false;
+  }
+
+  state.kind = 'scalar';
+  state.result = '';
+  state.position++;
+  captureStart = captureEnd = state.position;
+
+  while ((ch = state.input.charCodeAt(state.position)) !== 0) {
+    if (ch === 0x22/* " */) {
+      captureSegment(state, captureStart, state.position, true);
+      state.position++;
+      return true;
+
+    } else if (ch === 0x5C/* \ */) {
+      captureSegment(state, captureStart, state.position, true);
+      ch = state.input.charCodeAt(++state.position);
+
+      if (is_EOL(ch)) {
+        skipSeparationSpace(state, false, nodeIndent);
+
+        // TODO: rework to inline fn with no type cast?
+      } else if (ch < 256 && simpleEscapeCheck[ch]) {
+        state.result += simpleEscapeMap[ch];
+        state.position++;
+
+      } else if ((tmp = escapedHexLen(ch)) > 0) {
+        hexLength = tmp;
+        hexResult = 0;
+
+        for (; hexLength > 0; hexLength--) {
+          ch = state.input.charCodeAt(++state.position);
+
+          if ((tmp = fromHexCode(ch)) >= 0) {
+            hexResult = (hexResult << 4) + tmp;
+
+          } else {
+            throwError(state, 'expected hexadecimal character');
+          }
+        }
+
+        state.result += charFromCodepoint(hexResult);
+
+        state.position++;
+
+      } else {
+        throwError(state, 'unknown escape sequence');
+      }
+
+      captureStart = captureEnd = state.position;
+
+    } else if (is_EOL(ch)) {
+      captureSegment(state, captureStart, captureEnd, true);
+      writeFoldedLines(state, skipSeparationSpace(state, false, nodeIndent));
+      captureStart = captureEnd = state.position;
+
+    } else if (state.position === state.lineStart && testDocumentSeparator(state)) {
+      throwError(state, 'unexpected end of the document within a double quoted scalar');
+
+    } else {
+      state.position++;
+      captureEnd = state.position;
+    }
+  }
+
+  throwError(state, 'unexpected end of the stream within a double quoted scalar');
+}
+
+function readFlowCollection(state, nodeIndent) {
+  var readNext = true,
+      _line,
+      _lineStart,
+      _pos,
+      _tag     = state.tag,
+      _result,
+      _anchor  = state.anchor,
+      following,
+      terminator,
+      isPair,
+      isExplicitPair,
+      isMapping,
+      overridableKeys = Object.create(null),
+      keyNode,
+      keyTag,
+      valueNode,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch === 0x5B/* [ */) {
+    terminator = 0x5D;/* ] */
+    isMapping = false;
+    _result = [];
+  } else if (ch === 0x7B/* { */) {
+    terminator = 0x7D;/* } */
+    isMapping = true;
+    _result = {};
+  } else {
+    return false;
+  }
+
+  if (state.anchor !== null) {
+    state.anchorMap[state.anchor] = _result;
+  }
+
+  ch = state.input.charCodeAt(++state.position);
+
+  while (ch !== 0) {
+    skipSeparationSpace(state, true, nodeIndent);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (ch === terminator) {
+      state.position++;
+      state.tag = _tag;
+      state.anchor = _anchor;
+      state.kind = isMapping ? 'mapping' : 'sequence';
+      state.result = _result;
+      return true;
+    } else if (!readNext) {
+      throwError(state, 'missed comma between flow collection entries');
+    } else if (ch === 0x2C/* , */) {
+      // "flow collection entries can never be completely empty", as per YAML 1.2, section 7.4
+      throwError(state, "expected the node content, but found ','");
+    }
+
+    keyTag = keyNode = valueNode = null;
+    isPair = isExplicitPair = false;
+
+    if (ch === 0x3F/* ? */) {
+      following = state.input.charCodeAt(state.position + 1);
+
+      if (is_WS_OR_EOL(following)) {
+        isPair = isExplicitPair = true;
+        state.position++;
+        skipSeparationSpace(state, true, nodeIndent);
+      }
+    }
+
+    _line = state.line; // Save the current line.
+    _lineStart = state.lineStart;
+    _pos = state.position;
+    composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
+    keyTag = state.tag;
+    keyNode = state.result;
+    skipSeparationSpace(state, true, nodeIndent);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if ((isExplicitPair || state.line === _line) && ch === 0x3A/* : */) {
+      isPair = true;
+      ch = state.input.charCodeAt(++state.position);
+      skipSeparationSpace(state, true, nodeIndent);
+      composeNode(state, nodeIndent, CONTEXT_FLOW_IN, false, true);
+      valueNode = state.result;
+    }
+
+    if (isMapping) {
+      storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _line, _lineStart, _pos);
+    } else if (isPair) {
+      _result.push(storeMappingPair(state, null, overridableKeys, keyTag, keyNode, valueNode, _line, _lineStart, _pos));
+    } else {
+      _result.push(keyNode);
+    }
+
+    skipSeparationSpace(state, true, nodeIndent);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (ch === 0x2C/* , */) {
+      readNext = true;
+      ch = state.input.charCodeAt(++state.position);
+    } else {
+      readNext = false;
+    }
+  }
+
+  throwError(state, 'unexpected end of the stream within a flow collection');
+}
+
+function readBlockScalar(state, nodeIndent) {
+  var captureStart,
+      folding,
+      chomping       = CHOMPING_CLIP,
+      didReadContent = false,
+      detectedIndent = false,
+      textIndent     = nodeIndent,
+      emptyLines     = 0,
+      atMoreIndented = false,
+      tmp,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch === 0x7C/* | */) {
+    folding = false;
+  } else if (ch === 0x3E/* > */) {
+    folding = true;
+  } else {
+    return false;
+  }
+
+  state.kind = 'scalar';
+  state.result = '';
+
+  while (ch !== 0) {
+    ch = state.input.charCodeAt(++state.position);
+
+    if (ch === 0x2B/* + */ || ch === 0x2D/* - */) {
+      if (CHOMPING_CLIP === chomping) {
+        chomping = (ch === 0x2B/* + */) ? CHOMPING_KEEP : CHOMPING_STRIP;
+      } else {
+        throwError(state, 'repeat of a chomping mode identifier');
+      }
+
+    } else if ((tmp = fromDecimalCode(ch)) >= 0) {
+      if (tmp === 0) {
+        throwError(state, 'bad explicit indentation width of a block scalar; it cannot be less than one');
+      } else if (!detectedIndent) {
+        textIndent = nodeIndent + tmp - 1;
+        detectedIndent = true;
+      } else {
+        throwError(state, 'repeat of an indentation width identifier');
+      }
+
+    } else {
+      break;
+    }
+  }
+
+  if (is_WHITE_SPACE(ch)) {
+    do { ch = state.input.charCodeAt(++state.position); }
+    while (is_WHITE_SPACE(ch));
+
+    if (ch === 0x23/* # */) {
+      do { ch = state.input.charCodeAt(++state.position); }
+      while (!is_EOL(ch) && (ch !== 0));
+    }
+  }
+
+  while (ch !== 0) {
+    readLineBreak(state);
+    state.lineIndent = 0;
+
+    ch = state.input.charCodeAt(state.position);
+
+    while ((!detectedIndent || state.lineIndent < textIndent) &&
+           (ch === 0x20/* Space */)) {
+      state.lineIndent++;
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    if (!detectedIndent && state.lineIndent > textIndent) {
+      textIndent = state.lineIndent;
+    }
+
+    if (is_EOL(ch)) {
+      emptyLines++;
+      continue;
+    }
+
+    // End of the scalar.
+    if (state.lineIndent < textIndent) {
+
+      // Perform the chomping.
+      if (chomping === CHOMPING_KEEP) {
+        state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
+      } else if (chomping === CHOMPING_CLIP) {
+        if (didReadContent) { // i.e. only if the scalar is not empty.
+          state.result += '\n';
+        }
+      }
+
+      // Break this `while` cycle and go to the funciton's epilogue.
+      break;
+    }
+
+    // Folded style: use fancy rules to handle line breaks.
+    if (folding) {
+
+      // Lines starting with white space characters (more-indented lines) are not folded.
+      if (is_WHITE_SPACE(ch)) {
+        atMoreIndented = true;
+        // except for the first content line (cf. Example 8.1)
+        state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
+
+      // End of more-indented block.
+      } else if (atMoreIndented) {
+        atMoreIndented = false;
+        state.result += common.repeat('\n', emptyLines + 1);
+
+      // Just one line break - perceive as the same line.
+      } else if (emptyLines === 0) {
+        if (didReadContent) { // i.e. only if we have already read some scalar content.
+          state.result += ' ';
+        }
+
+      // Several line breaks - perceive as different lines.
+      } else {
+        state.result += common.repeat('\n', emptyLines);
+      }
+
+    // Literal style: just add exact number of line breaks between content lines.
+    } else {
+      // Keep all line breaks except the header line break.
+      state.result += common.repeat('\n', didReadContent ? 1 + emptyLines : emptyLines);
+    }
+
+    didReadContent = true;
+    detectedIndent = true;
+    emptyLines = 0;
+    captureStart = state.position;
+
+    while (!is_EOL(ch) && (ch !== 0)) {
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    captureSegment(state, captureStart, state.position, false);
+  }
+
+  return true;
+}
+
+function readBlockSequence(state, nodeIndent) {
+  var _line,
+      _tag      = state.tag,
+      _anchor   = state.anchor,
+      _result   = [],
+      following,
+      detected  = false,
+      ch;
+
+  // there is a leading tab before this token, so it can't be a block sequence/mapping;
+  // it can still be flow sequence/mapping or a scalar
+  if (state.firstTabInLine !== -1) return false;
+
+  if (state.anchor !== null) {
+    state.anchorMap[state.anchor] = _result;
+  }
+
+  ch = state.input.charCodeAt(state.position);
+
+  while (ch !== 0) {
+    if (state.firstTabInLine !== -1) {
+      state.position = state.firstTabInLine;
+      throwError(state, 'tab characters must not be used in indentation');
+    }
+
+    if (ch !== 0x2D/* - */) {
+      break;
+    }
+
+    following = state.input.charCodeAt(state.position + 1);
+
+    if (!is_WS_OR_EOL(following)) {
+      break;
+    }
+
+    detected = true;
+    state.position++;
+
+    if (skipSeparationSpace(state, true, -1)) {
+      if (state.lineIndent <= nodeIndent) {
+        _result.push(null);
+        ch = state.input.charCodeAt(state.position);
+        continue;
+      }
+    }
+
+    _line = state.line;
+    composeNode(state, nodeIndent, CONTEXT_BLOCK_IN, false, true);
+    _result.push(state.result);
+    skipSeparationSpace(state, true, -1);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if ((state.line === _line || state.lineIndent > nodeIndent) && (ch !== 0)) {
+      throwError(state, 'bad indentation of a sequence entry');
+    } else if (state.lineIndent < nodeIndent) {
+      break;
+    }
+  }
+
+  if (detected) {
+    state.tag = _tag;
+    state.anchor = _anchor;
+    state.kind = 'sequence';
+    state.result = _result;
+    return true;
+  }
+  return false;
+}
+
+function readBlockMapping(state, nodeIndent, flowIndent) {
+  var following,
+      allowCompact,
+      _line,
+      _keyLine,
+      _keyLineStart,
+      _keyPos,
+      _tag          = state.tag,
+      _anchor       = state.anchor,
+      _result       = {},
+      overridableKeys = Object.create(null),
+      keyTag        = null,
+      keyNode       = null,
+      valueNode     = null,
+      atExplicitKey = false,
+      detected      = false,
+      ch;
+
+  // there is a leading tab before this token, so it can't be a block sequence/mapping;
+  // it can still be flow sequence/mapping or a scalar
+  if (state.firstTabInLine !== -1) return false;
+
+  if (state.anchor !== null) {
+    state.anchorMap[state.anchor] = _result;
+  }
+
+  ch = state.input.charCodeAt(state.position);
+
+  while (ch !== 0) {
+    if (!atExplicitKey && state.firstTabInLine !== -1) {
+      state.position = state.firstTabInLine;
+      throwError(state, 'tab characters must not be used in indentation');
+    }
+
+    following = state.input.charCodeAt(state.position + 1);
+    _line = state.line; // Save the current line.
+
+    //
+    // Explicit notation case. There are two separate blocks:
+    // first for the key (denoted by "?") and second for the value (denoted by ":")
+    //
+    if ((ch === 0x3F/* ? */ || ch === 0x3A/* : */) && is_WS_OR_EOL(following)) {
+
+      if (ch === 0x3F/* ? */) {
+        if (atExplicitKey) {
+          storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
+          keyTag = keyNode = valueNode = null;
+        }
+
+        detected = true;
+        atExplicitKey = true;
+        allowCompact = true;
+
+      } else if (atExplicitKey) {
+        // i.e. 0x3A/* : */ === character after the explicit key.
+        atExplicitKey = false;
+        allowCompact = true;
+
+      } else {
+        throwError(state, 'incomplete explicit mapping pair; a key node is missed; or followed by a non-tabulated empty line');
+      }
+
+      state.position += 1;
+      ch = following;
+
+    //
+    // Implicit notation case. Flow-style node as the key first, then ":", and the value.
+    //
+    } else {
+      _keyLine = state.line;
+      _keyLineStart = state.lineStart;
+      _keyPos = state.position;
+
+      if (!composeNode(state, flowIndent, CONTEXT_FLOW_OUT, false, true)) {
+        // Neither implicit nor explicit notation.
+        // Reading is done. Go to the epilogue.
+        break;
+      }
+
+      if (state.line === _line) {
+        ch = state.input.charCodeAt(state.position);
+
+        while (is_WHITE_SPACE(ch)) {
+          ch = state.input.charCodeAt(++state.position);
+        }
+
+        if (ch === 0x3A/* : */) {
+          ch = state.input.charCodeAt(++state.position);
+
+          if (!is_WS_OR_EOL(ch)) {
+            throwError(state, 'a whitespace character is expected after the key-value separator within a block mapping');
+          }
+
+          if (atExplicitKey) {
+            storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
+            keyTag = keyNode = valueNode = null;
+          }
+
+          detected = true;
+          atExplicitKey = false;
+          allowCompact = false;
+          keyTag = state.tag;
+          keyNode = state.result;
+
+        } else if (detected) {
+          throwError(state, 'can not read an implicit mapping pair; a colon is missed');
+
+        } else {
+          state.tag = _tag;
+          state.anchor = _anchor;
+          return true; // Keep the result of `composeNode`.
+        }
+
+      } else if (detected) {
+        throwError(state, 'can not read a block mapping entry; a multiline key may not be an implicit key');
+
+      } else {
+        state.tag = _tag;
+        state.anchor = _anchor;
+        return true; // Keep the result of `composeNode`.
+      }
+    }
+
+    //
+    // Common reading code for both explicit and implicit notations.
+    //
+    if (state.line === _line || state.lineIndent > nodeIndent) {
+      if (atExplicitKey) {
+        _keyLine = state.line;
+        _keyLineStart = state.lineStart;
+        _keyPos = state.position;
+      }
+
+      if (composeNode(state, nodeIndent, CONTEXT_BLOCK_OUT, true, allowCompact)) {
+        if (atExplicitKey) {
+          keyNode = state.result;
+        } else {
+          valueNode = state.result;
+        }
+      }
+
+      if (!atExplicitKey) {
+        storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valueNode, _keyLine, _keyLineStart, _keyPos);
+        keyTag = keyNode = valueNode = null;
+      }
+
+      skipSeparationSpace(state, true, -1);
+      ch = state.input.charCodeAt(state.position);
+    }
+
+    if ((state.line === _line || state.lineIndent > nodeIndent) && (ch !== 0)) {
+      throwError(state, 'bad indentation of a mapping entry');
+    } else if (state.lineIndent < nodeIndent) {
+      break;
+    }
+  }
+
+  //
+  // Epilogue.
+  //
+
+  // Special case: last mapping's node contains only the key in explicit notation.
+  if (atExplicitKey) {
+    storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, null, _keyLine, _keyLineStart, _keyPos);
+  }
+
+  // Expose the resulting mapping.
+  if (detected) {
+    state.tag = _tag;
+    state.anchor = _anchor;
+    state.kind = 'mapping';
+    state.result = _result;
+  }
+
+  return detected;
+}
+
+function readTagProperty(state) {
+  var _position,
+      isVerbatim = false,
+      isNamed    = false,
+      tagHandle,
+      tagName,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x21/* ! */) return false;
+
+  if (state.tag !== null) {
+    throwError(state, 'duplication of a tag property');
+  }
+
+  ch = state.input.charCodeAt(++state.position);
+
+  if (ch === 0x3C/* < */) {
+    isVerbatim = true;
+    ch = state.input.charCodeAt(++state.position);
+
+  } else if (ch === 0x21/* ! */) {
+    isNamed = true;
+    tagHandle = '!!';
+    ch = state.input.charCodeAt(++state.position);
+
+  } else {
+    tagHandle = '!';
+  }
+
+  _position = state.position;
+
+  if (isVerbatim) {
+    do { ch = state.input.charCodeAt(++state.position); }
+    while (ch !== 0 && ch !== 0x3E/* > */);
+
+    if (state.position < state.length) {
+      tagName = state.input.slice(_position, state.position);
+      ch = state.input.charCodeAt(++state.position);
+    } else {
+      throwError(state, 'unexpected end of the stream within a verbatim tag');
+    }
+  } else {
+    while (ch !== 0 && !is_WS_OR_EOL(ch)) {
+
+      if (ch === 0x21/* ! */) {
+        if (!isNamed) {
+          tagHandle = state.input.slice(_position - 1, state.position + 1);
+
+          if (!PATTERN_TAG_HANDLE.test(tagHandle)) {
+            throwError(state, 'named tag handle cannot contain such characters');
+          }
+
+          isNamed = true;
+          _position = state.position + 1;
+        } else {
+          throwError(state, 'tag suffix cannot contain exclamation marks');
+        }
+      }
+
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    tagName = state.input.slice(_position, state.position);
+
+    if (PATTERN_FLOW_INDICATORS.test(tagName)) {
+      throwError(state, 'tag suffix cannot contain flow indicator characters');
+    }
+  }
+
+  if (tagName && !PATTERN_TAG_URI.test(tagName)) {
+    throwError(state, 'tag name cannot contain such characters: ' + tagName);
+  }
+
+  try {
+    tagName = decodeURIComponent(tagName);
+  } catch (err) {
+    throwError(state, 'tag name is malformed: ' + tagName);
+  }
+
+  if (isVerbatim) {
+    state.tag = tagName;
+
+  } else if (_hasOwnProperty.call(state.tagMap, tagHandle)) {
+    state.tag = state.tagMap[tagHandle] + tagName;
+
+  } else if (tagHandle === '!') {
+    state.tag = '!' + tagName;
+
+  } else if (tagHandle === '!!') {
+    state.tag = 'tag:yaml.org,2002:' + tagName;
+
+  } else {
+    throwError(state, 'undeclared tag handle "' + tagHandle + '"');
+  }
+
+  return true;
+}
+
+function readAnchorProperty(state) {
+  var _position,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x26/* & */) return false;
+
+  if (state.anchor !== null) {
+    throwError(state, 'duplication of an anchor property');
+  }
+
+  ch = state.input.charCodeAt(++state.position);
+  _position = state.position;
+
+  while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {
+    ch = state.input.charCodeAt(++state.position);
+  }
+
+  if (state.position === _position) {
+    throwError(state, 'name of an anchor node must contain at least one character');
+  }
+
+  state.anchor = state.input.slice(_position, state.position);
+  return true;
+}
+
+function readAlias(state) {
+  var _position, alias,
+      ch;
+
+  ch = state.input.charCodeAt(state.position);
+
+  if (ch !== 0x2A/* * */) return false;
+
+  ch = state.input.charCodeAt(++state.position);
+  _position = state.position;
+
+  while (ch !== 0 && !is_WS_OR_EOL(ch) && !is_FLOW_INDICATOR(ch)) {
+    ch = state.input.charCodeAt(++state.position);
+  }
+
+  if (state.position === _position) {
+    throwError(state, 'name of an alias node must contain at least one character');
+  }
+
+  alias = state.input.slice(_position, state.position);
+
+  if (!_hasOwnProperty.call(state.anchorMap, alias)) {
+    throwError(state, 'unidentified alias "' + alias + '"');
+  }
+
+  state.result = state.anchorMap[alias];
+  skipSeparationSpace(state, true, -1);
+  return true;
+}
+
+function composeNode(state, parentIndent, nodeContext, allowToSeek, allowCompact) {
+  var allowBlockStyles,
+      allowBlockScalars,
+      allowBlockCollections,
+      indentStatus = 1, // 1: this>parent, 0: this=parent, -1: this<parent
+      atNewLine  = false,
+      hasContent = false,
+      typeIndex,
+      typeQuantity,
+      typeList,
+      type,
+      flowIndent,
+      blockIndent;
+
+  if (state.listener !== null) {
+    state.listener('open', state);
+  }
+
+  state.tag    = null;
+  state.anchor = null;
+  state.kind   = null;
+  state.result = null;
+
+  allowBlockStyles = allowBlockScalars = allowBlockCollections =
+    CONTEXT_BLOCK_OUT === nodeContext ||
+    CONTEXT_BLOCK_IN  === nodeContext;
+
+  if (allowToSeek) {
+    if (skipSeparationSpace(state, true, -1)) {
+      atNewLine = true;
+
+      if (state.lineIndent > parentIndent) {
+        indentStatus = 1;
+      } else if (state.lineIndent === parentIndent) {
+        indentStatus = 0;
+      } else if (state.lineIndent < parentIndent) {
+        indentStatus = -1;
+      }
+    }
+  }
+
+  if (indentStatus === 1) {
+    while (readTagProperty(state) || readAnchorProperty(state)) {
+      if (skipSeparationSpace(state, true, -1)) {
+        atNewLine = true;
+        allowBlockCollections = allowBlockStyles;
+
+        if (state.lineIndent > parentIndent) {
+          indentStatus = 1;
+        } else if (state.lineIndent === parentIndent) {
+          indentStatus = 0;
+        } else if (state.lineIndent < parentIndent) {
+          indentStatus = -1;
+        }
+      } else {
+        allowBlockCollections = false;
+      }
+    }
+  }
+
+  if (allowBlockCollections) {
+    allowBlockCollections = atNewLine || allowCompact;
+  }
+
+  if (indentStatus === 1 || CONTEXT_BLOCK_OUT === nodeContext) {
+    if (CONTEXT_FLOW_IN === nodeContext || CONTEXT_FLOW_OUT === nodeContext) {
+      flowIndent = parentIndent;
+    } else {
+      flowIndent = parentIndent + 1;
+    }
+
+    blockIndent = state.position - state.lineStart;
+
+    if (indentStatus === 1) {
+      if (allowBlockCollections &&
+          (readBlockSequence(state, blockIndent) ||
+           readBlockMapping(state, blockIndent, flowIndent)) ||
+          readFlowCollection(state, flowIndent)) {
+        hasContent = true;
+      } else {
+        if ((allowBlockScalars && readBlockScalar(state, flowIndent)) ||
+            readSingleQuotedScalar(state, flowIndent) ||
+            readDoubleQuotedScalar(state, flowIndent)) {
+          hasContent = true;
+
+        } else if (readAlias(state)) {
+          hasContent = true;
+
+          if (state.tag !== null || state.anchor !== null) {
+            throwError(state, 'alias node should not have any properties');
+          }
+
+        } else if (readPlainScalar(state, flowIndent, CONTEXT_FLOW_IN === nodeContext)) {
+          hasContent = true;
+
+          if (state.tag === null) {
+            state.tag = '?';
+          }
+        }
+
+        if (state.anchor !== null) {
+          state.anchorMap[state.anchor] = state.result;
+        }
+      }
+    } else if (indentStatus === 0) {
+      // Special case: block sequences are allowed to have same indentation level as the parent.
+      // http://www.yaml.org/spec/1.2/spec.html#id2799784
+      hasContent = allowBlockCollections && readBlockSequence(state, blockIndent);
+    }
+  }
+
+  if (state.tag === null) {
+    if (state.anchor !== null) {
+      state.anchorMap[state.anchor] = state.result;
+    }
+
+  } else if (state.tag === '?') {
+    // Implicit resolving is not allowed for non-scalar types, and '?'
+    // non-specific tag is only automatically assigned to plain scalars.
+    //
+    // We only need to check kind conformity in case user explicitly assigns '?'
+    // tag, for example like this: "!<?> [0]"
+    //
+    if (state.result !== null && state.kind !== 'scalar') {
+      throwError(state, 'unacceptable node kind for !<?> tag; it should be "scalar", not "' + state.kind + '"');
+    }
+
+    for (typeIndex = 0, typeQuantity = state.implicitTypes.length; typeIndex < typeQuantity; typeIndex += 1) {
+      type = state.implicitTypes[typeIndex];
+
+      if (type.resolve(state.result)) { // `state.result` updated in resolver if matched
+        state.result = type.construct(state.result);
+        state.tag = type.tag;
+        if (state.anchor !== null) {
+          state.anchorMap[state.anchor] = state.result;
+        }
+        break;
+      }
+    }
+  } else if (state.tag !== '!') {
+    if (_hasOwnProperty.call(state.typeMap[state.kind || 'fallback'], state.tag)) {
+      type = state.typeMap[state.kind || 'fallback'][state.tag];
+    } else {
+      // looking for multi type
+      type = null;
+      typeList = state.typeMap.multi[state.kind || 'fallback'];
+
+      for (typeIndex = 0, typeQuantity = typeList.length; typeIndex < typeQuantity; typeIndex += 1) {
+        if (state.tag.slice(0, typeList[typeIndex].tag.length) === typeList[typeIndex].tag) {
+          type = typeList[typeIndex];
+          break;
+        }
+      }
+    }
+
+    if (!type) {
+      throwError(state, 'unknown tag !<' + state.tag + '>');
+    }
+
+    if (state.result !== null && type.kind !== state.kind) {
+      throwError(state, 'unacceptable node kind for !<' + state.tag + '> tag; it should be "' + type.kind + '", not "' + state.kind + '"');
+    }
+
+    if (!type.resolve(state.result, state.tag)) { // `state.result` updated in resolver if matched
+      throwError(state, 'cannot resolve a node with !<' + state.tag + '> explicit tag');
+    } else {
+      state.result = type.construct(state.result, state.tag);
+      if (state.anchor !== null) {
+        state.anchorMap[state.anchor] = state.result;
+      }
+    }
+  }
+
+  if (state.listener !== null) {
+    state.listener('close', state);
+  }
+  return state.tag !== null ||  state.anchor !== null || hasContent;
+}
+
+function readDocument(state) {
+  var documentStart = state.position,
+      _position,
+      directiveName,
+      directiveArgs,
+      hasDirectives = false,
+      ch;
+
+  state.version = null;
+  state.checkLineBreaks = state.legacy;
+  state.tagMap = Object.create(null);
+  state.anchorMap = Object.create(null);
+
+  while ((ch = state.input.charCodeAt(state.position)) !== 0) {
+    skipSeparationSpace(state, true, -1);
+
+    ch = state.input.charCodeAt(state.position);
+
+    if (state.lineIndent > 0 || ch !== 0x25/* % */) {
+      break;
+    }
+
+    hasDirectives = true;
+    ch = state.input.charCodeAt(++state.position);
+    _position = state.position;
+
+    while (ch !== 0 && !is_WS_OR_EOL(ch)) {
+      ch = state.input.charCodeAt(++state.position);
+    }
+
+    directiveName = state.input.slice(_position, state.position);
+    directiveArgs = [];
+
+    if (directiveName.length < 1) {
+      throwError(state, 'directive name must not be less than one character in length');
+    }
+
+    while (ch !== 0) {
+      while (is_WHITE_SPACE(ch)) {
+        ch = state.input.charCodeAt(++state.position);
+      }
+
+      if (ch === 0x23/* # */) {
+        do { ch = state.input.charCodeAt(++state.position); }
+        while (ch !== 0 && !is_EOL(ch));
+        break;
+      }
+
+      if (is_EOL(ch)) break;
+
+      _position = state.position;
+
+      while (ch !== 0 && !is_WS_OR_EOL(ch)) {
+        ch = state.input.charCodeAt(++state.position);
+      }
+
+      directiveArgs.push(state.input.slice(_position, state.position));
+    }
+
+    if (ch !== 0) readLineBreak(state);
+
+    if (_hasOwnProperty.call(directiveHandlers, directiveName)) {
+      directiveHandlers[directiveName](state, directiveName, directiveArgs);
+    } else {
+      throwWarning(state, 'unknown document directive "' + directiveName + '"');
+    }
+  }
+
+  skipSeparationSpace(state, true, -1);
+
+  if (state.lineIndent === 0 &&
+      state.input.charCodeAt(state.position)     === 0x2D/* - */ &&
+      state.input.charCodeAt(state.position + 1) === 0x2D/* - */ &&
+      state.input.charCodeAt(state.position + 2) === 0x2D/* - */) {
+    state.position += 3;
+    skipSeparationSpace(state, true, -1);
+
+  } else if (hasDirectives) {
+    throwError(state, 'directives end mark is expected');
+  }
+
+  composeNode(state, state.lineIndent - 1, CONTEXT_BLOCK_OUT, false, true);
+  skipSeparationSpace(state, true, -1);
+
+  if (state.checkLineBreaks &&
+      PATTERN_NON_ASCII_LINE_BREAKS.test(state.input.slice(documentStart, state.position))) {
+    throwWarning(state, 'non-ASCII line breaks are interpreted as content');
+  }
+
+  state.documents.push(state.result);
+
+  if (state.position === state.lineStart && testDocumentSeparator(state)) {
+
+    if (state.input.charCodeAt(state.position) === 0x2E/* . */) {
+      state.position += 3;
+      skipSeparationSpace(state, true, -1);
+    }
+    return;
+  }
+
+  if (state.position < (state.length - 1)) {
+    throwError(state, 'end of the stream or a document separator is expected');
+  } else {
+    return;
+  }
+}
+
+
+function loadDocuments(input, options) {
+  input = String(input);
+  options = options || {};
+
+  if (input.length !== 0) {
+
+    // Add tailing `\n` if not exists
+    if (input.charCodeAt(input.length - 1) !== 0x0A/* LF */ &&
+        input.charCodeAt(input.length - 1) !== 0x0D/* CR */) {
+      input += '\n';
+    }
+
+    // Strip BOM
+    if (input.charCodeAt(0) === 0xFEFF) {
+      input = input.slice(1);
+    }
+  }
+
+  var state = new State(input, options);
+
+  var nullpos = input.indexOf('\0');
+
+  if (nullpos !== -1) {
+    state.position = nullpos;
+    throwError(state, 'null byte is not allowed in input');
+  }
+
+  // Use 0 as string terminator. That significantly simplifies bounds check.
+  state.input += '\0';
+
+  while (state.input.charCodeAt(state.position) === 0x20/* Space */) {
+    state.lineIndent += 1;
+    state.position += 1;
+  }
+
+  while (state.position < (state.length - 1)) {
+    readDocument(state);
+  }
+
+  return state.documents;
+}
+
+
+function loadAll(input, iterator, options) {
+  if (iterator !== null && typeof iterator === 'object' && typeof options === 'undefined') {
+    options = iterator;
+    iterator = null;
+  }
+
+  var documents = loadDocuments(input, options);
+
+  if (typeof iterator !== 'function') {
+    return documents;
+  }
+
+  for (var index = 0, length = documents.length; index < length; index += 1) {
+    iterator(documents[index]);
+  }
+}
+
+
+function load(input, options) {
+  var documents = loadDocuments(input, options);
+
+  if (documents.length === 0) {
+    /*eslint-disable no-undefined*/
+    return undefined;
+  } else if (documents.length === 1) {
+    return documents[0];
+  }
+  throw new YAMLException('expected a single document in the stream, but found more');
+}
+
+
+module.exports.loadAll = loadAll;
+module.exports.load    = load;
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/schema.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/schema.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/schema.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,121 @@
+'use strict';
+
+/*eslint-disable max-len*/
+
+var YAMLException = require('./exception');
+var Type          = require('./type');
+
+
+function compileList(schema, name) {
+  var result = [];
+
+  schema[name].forEach(function (currentType) {
+    var newIndex = result.length;
+
+    result.forEach(function (previousType, previousIndex) {
+      if (previousType.tag === currentType.tag &&
+          previousType.kind === currentType.kind &&
+          previousType.multi === currentType.multi) {
+
+        newIndex = previousIndex;
+      }
+    });
+
+    result[newIndex] = currentType;
+  });
+
+  return result;
+}
+
+
+function compileMap(/* lists... */) {
+  var result = {
+        scalar: {},
+        sequence: {},
+        mapping: {},
+        fallback: {},
+        multi: {
+          scalar: [],
+          sequence: [],
+          mapping: [],
+          fallback: []
+        }
+      }, index, length;
+
+  function collectType(type) {
+    if (type.multi) {
+      result.multi[type.kind].push(type);
+      result.multi['fallback'].push(type);
+    } else {
+      result[type.kind][type.tag] = result['fallback'][type.tag] = type;
+    }
+  }
+
+  for (index = 0, length = arguments.length; index < length; index += 1) {
+    arguments[index].forEach(collectType);
+  }
+  return result;
+}
+
+
+function Schema(definition) {
+  return this.extend(definition);
+}
+
+
+Schema.prototype.extend = function extend(definition) {
+  var implicit = [];
+  var explicit = [];
+
+  if (definition instanceof Type) {
+    // Schema.extend(type)
+    explicit.push(definition);
+
+  } else if (Array.isArray(definition)) {
+    // Schema.extend([ type1, type2, ... ])
+    explicit = explicit.concat(definition);
+
+  } else if (definition && (Array.isArray(definition.implicit) || Array.isArray(definition.explicit))) {
+    // Schema.extend({ explicit: [ type1, type2, ... ], implicit: [ type1, type2, ... ] })
+    if (definition.implicit) implicit = implicit.concat(definition.implicit);
+    if (definition.explicit) explicit = explicit.concat(definition.explicit);
+
+  } else {
+    throw new YAMLException('Schema.extend argument should be a Type, [ Type ], ' +
+      'or a schema definition ({ implicit: [...], explicit: [...] })');
+  }
+
+  implicit.forEach(function (type) {
+    if (!(type instanceof Type)) {
+      throw new YAMLException('Specified list of YAML types (or a single Type object) contains a non-Type object.');
+    }
+
+    if (type.loadKind && type.loadKind !== 'scalar') {
+      throw new YAMLException('There is a non-scalar type in the implicit list of a schema. Implicit resolving of such types is not supported.');
+    }
+
+    if (type.multi) {
+      throw new YAMLException('There is a multi type in the implicit list of a schema. Multi tags can only be listed as explicit.');
+    }
+  });
+
+  explicit.forEach(function (type) {
+    if (!(type instanceof Type)) {
+      throw new YAMLException('Specified list of YAML types (or a single Type object) contains a non-Type object.');
+    }
+  });
+
+  var result = Object.create(Schema.prototype);
+
+  result.implicit = (this.implicit || []).concat(implicit);
+  result.explicit = (this.explicit || []).concat(explicit);
+
+  result.compiledImplicit = compileList(result, 'implicit');
+  result.compiledExplicit = compileList(result, 'explicit');
+  result.compiledTypeMap  = compileMap(result.compiledImplicit, result.compiledExplicit);
+
+  return result;
+};
+
+
+module.exports = Schema;
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/schema/core.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/schema/core.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/schema/core.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,11 @@
+// Standard YAML's Core schema.
+// http://www.yaml.org/spec/1.2/spec.html#id2804923
+//
+// NOTE: JS-YAML does not support schema-specific tag resolution restrictions.
+// So, Core schema has no distinctions from JSON schema is JS-YAML.
+
+
+'use strict';
+
+
+module.exports = require('./json');
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/schema/default.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/schema/default.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/schema/default.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,22 @@
+// JS-YAML's default schema for `safeLoad` function.
+// It is not described in the YAML specification.
+//
+// This schema is based on standard YAML's Core schema and includes most of
+// extra types described at YAML tag repository. (http://yaml.org/type/)
+
+
+'use strict';
+
+
+module.exports = require('./core').extend({
+  implicit: [
+    require('../type/timestamp'),
+    require('../type/merge')
+  ],
+  explicit: [
+    require('../type/binary'),
+    require('../type/omap'),
+    require('../type/pairs'),
+    require('../type/set')
+  ]
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/schema/failsafe.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/schema/failsafe.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/schema/failsafe.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,17 @@
+// Standard YAML's Failsafe schema.
+// http://www.yaml.org/spec/1.2/spec.html#id2802346
+
+
+'use strict';
+
+
+var Schema = require('../schema');
+
+
+module.exports = new Schema({
+  explicit: [
+    require('../type/str'),
+    require('../type/seq'),
+    require('../type/map')
+  ]
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/schema/json.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/schema/json.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/schema/json.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,19 @@
+// Standard YAML's JSON schema.
+// http://www.yaml.org/spec/1.2/spec.html#id2803231
+//
+// NOTE: JS-YAML does not support schema-specific tag resolution restrictions.
+// So, this schema is not such strict as defined in the YAML specification.
+// It allows numbers in binary notaion, use `Null` and `NULL` as `null`, etc.
+
+
+'use strict';
+
+
+module.exports = require('./failsafe').extend({
+  implicit: [
+    require('../type/null'),
+    require('../type/bool'),
+    require('../type/int'),
+    require('../type/float')
+  ]
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/snippet.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/snippet.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/snippet.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,101 @@
+'use strict';
+
+
+var common = require('./common');
+
+
+// get snippet for a single line, respecting maxLength
+function getLine(buffer, lineStart, lineEnd, position, maxLineLength) {
+  var head = '';
+  var tail = '';
+  var maxHalfLength = Math.floor(maxLineLength / 2) - 1;
+
+  if (position - lineStart > maxHalfLength) {
+    head = ' ... ';
+    lineStart = position - maxHalfLength + head.length;
+  }
+
+  if (lineEnd - position > maxHalfLength) {
+    tail = ' ...';
+    lineEnd = position + maxHalfLength - tail.length;
+  }
+
+  return {
+    str: head + buffer.slice(lineStart, lineEnd).replace(/\t/g, '→') + tail,
+    pos: position - lineStart + head.length // relative position
+  };
+}
+
+
+function padStart(string, max) {
+  return common.repeat(' ', max - string.length) + string;
+}
+
+
+function makeSnippet(mark, options) {
+  options = Object.create(options || null);
+
+  if (!mark.buffer) return null;
+
+  if (!options.maxLength) options.maxLength = 79;
+  if (typeof options.indent      !== 'number') options.indent      = 1;
+  if (typeof options.linesBefore !== 'number') options.linesBefore = 3;
+  if (typeof options.linesAfter  !== 'number') options.linesAfter  = 2;
+
+  var re = /\r?\n|\r|\0/g;
+  var lineStarts = [ 0 ];
+  var lineEnds = [];
+  var match;
+  var foundLineNo = -1;
+
+  while ((match = re.exec(mark.buffer))) {
+    lineEnds.push(match.index);
+    lineStarts.push(match.index + match[0].length);
+
+    if (mark.position <= match.index && foundLineNo < 0) {
+      foundLineNo = lineStarts.length - 2;
+    }
+  }
+
+  if (foundLineNo < 0) foundLineNo = lineStarts.length - 1;
+
+  var result = '', i, line;
+  var lineNoLength = Math.min(mark.line + options.linesAfter, lineEnds.length).toString().length;
+  var maxLineLength = options.maxLength - (options.indent + lineNoLength + 3);
+
+  for (i = 1; i <= options.linesBefore; i++) {
+    if (foundLineNo - i < 0) break;
+    line = getLine(
+      mark.buffer,
+      lineStarts[foundLineNo - i],
+      lineEnds[foundLineNo - i],
+      mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo - i]),
+      maxLineLength
+    );
+    result = common.repeat(' ', options.indent) + padStart((mark.line - i + 1).toString(), lineNoLength) +
+      ' | ' + line.str + '\n' + result;
+  }
+
+  line = getLine(mark.buffer, lineStarts[foundLineNo], lineEnds[foundLineNo], mark.position, maxLineLength);
+  result += common.repeat(' ', options.indent) + padStart((mark.line + 1).toString(), lineNoLength) +
+    ' | ' + line.str + '\n';
+  result += common.repeat('-', options.indent + lineNoLength + 3 + line.pos) + '^' + '\n';
+
+  for (i = 1; i <= options.linesAfter; i++) {
+    if (foundLineNo + i >= lineEnds.length) break;
+    line = getLine(
+      mark.buffer,
+      lineStarts[foundLineNo + i],
+      lineEnds[foundLineNo + i],
+      mark.position - (lineStarts[foundLineNo] - lineStarts[foundLineNo + i]),
+      maxLineLength
+    );
+    result += common.repeat(' ', options.indent) + padStart((mark.line + i + 1).toString(), lineNoLength) +
+      ' | ' + line.str + '\n';
+  }
+
+  return result.replace(/\n$/, '');
+}
+
+
+module.exports = makeSnippet;
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/type.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/type.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/type.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,66 @@
+'use strict';
+
+var YAMLException = require('./exception');
+
+var TYPE_CONSTRUCTOR_OPTIONS = [
+  'kind',
+  'multi',
+  'resolve',
+  'construct',
+  'instanceOf',
+  'predicate',
+  'represent',
+  'representName',
+  'defaultStyle',
+  'styleAliases'
+];
+
+var YAML_NODE_KINDS = [
+  'scalar',
+  'sequence',
+  'mapping'
+];
+
+function compileStyleAliases(map) {
+  var result = {};
+
+  if (map !== null) {
+    Object.keys(map).forEach(function (style) {
+      map[style].forEach(function (alias) {
+        result[String(alias)] = style;
+      });
+    });
+  }
+
+  return result;
+}
+
+function Type(tag, options) {
+  options = options || {};
+
+  Object.keys(options).forEach(function (name) {
+    if (TYPE_CONSTRUCTOR_OPTIONS.indexOf(name) === -1) {
+      throw new YAMLException('Unknown option "' + name + '" is met in definition of "' + tag + '" YAML type.');
+    }
+  });
+
+  // TODO: Add tag format check.
+  this.options       = options; // keep original options in case user wants to extend this type later
+  this.tag           = tag;
+  this.kind          = options['kind']          || null;
+  this.resolve       = options['resolve']       || function () { return true; };
+  this.construct     = options['construct']     || function (data) { return data; };
+  this.instanceOf    = options['instanceOf']    || null;
+  this.predicate     = options['predicate']     || null;
+  this.represent     = options['represent']     || null;
+  this.representName = options['representName'] || null;
+  this.defaultStyle  = options['defaultStyle']  || null;
+  this.multi         = options['multi']         || false;
+  this.styleAliases  = compileStyleAliases(options['styleAliases'] || null);
+
+  if (YAML_NODE_KINDS.indexOf(this.kind) === -1) {
+    throw new YAMLException('Unknown kind "' + this.kind + '" is specified for "' + tag + '" YAML type.');
+  }
+}
+
+module.exports = Type;
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/type/binary.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/type/binary.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/type/binary.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,125 @@
+'use strict';
+
+/*eslint-disable no-bitwise*/
+
+
+var Type = require('../type');
+
+
+// [ 64, 65, 66 ] -> [ padding, CR, LF ]
+var BASE64_MAP = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\n\r';
+
+
+function resolveYamlBinary(data) {
+  if (data === null) return false;
+
+  var code, idx, bitlen = 0, max = data.length, map = BASE64_MAP;
+
+  // Convert one by one.
+  for (idx = 0; idx < max; idx++) {
+    code = map.indexOf(data.charAt(idx));
+
+    // Skip CR/LF
+    if (code > 64) continue;
+
+    // Fail on illegal characters
+    if (code < 0) return false;
+
+    bitlen += 6;
+  }
+
+  // If there are any bits left, source was corrupted
+  return (bitlen % 8) === 0;
+}
+
+function constructYamlBinary(data) {
+  var idx, tailbits,
+      input = data.replace(/[\r\n=]/g, ''), // remove CR/LF & padding to simplify scan
+      max = input.length,
+      map = BASE64_MAP,
+      bits = 0,
+      result = [];
+
+  // Collect by 6*4 bits (3 bytes)
+
+  for (idx = 0; idx < max; idx++) {
+    if ((idx % 4 === 0) && idx) {
+      result.push((bits >> 16) & 0xFF);
+      result.push((bits >> 8) & 0xFF);
+      result.push(bits & 0xFF);
+    }
+
+    bits = (bits << 6) | map.indexOf(input.charAt(idx));
+  }
+
+  // Dump tail
+
+  tailbits = (max % 4) * 6;
+
+  if (tailbits === 0) {
+    result.push((bits >> 16) & 0xFF);
+    result.push((bits >> 8) & 0xFF);
+    result.push(bits & 0xFF);
+  } else if (tailbits === 18) {
+    result.push((bits >> 10) & 0xFF);
+    result.push((bits >> 2) & 0xFF);
+  } else if (tailbits === 12) {
+    result.push((bits >> 4) & 0xFF);
+  }
+
+  return new Uint8Array(result);
+}
+
+function representYamlBinary(object /*, style*/) {
+  var result = '', bits = 0, idx, tail,
+      max = object.length,
+      map = BASE64_MAP;
+
+  // Convert every three bytes to 4 ASCII characters.
+
+  for (idx = 0; idx < max; idx++) {
+    if ((idx % 3 === 0) && idx) {
+      result += map[(bits >> 18) & 0x3F];
+      result += map[(bits >> 12) & 0x3F];
+      result += map[(bits >> 6) & 0x3F];
+      result += map[bits & 0x3F];
+    }
+
+    bits = (bits << 8) + object[idx];
+  }
+
+  // Dump tail
+
+  tail = max % 3;
+
+  if (tail === 0) {
+    result += map[(bits >> 18) & 0x3F];
+    result += map[(bits >> 12) & 0x3F];
+    result += map[(bits >> 6) & 0x3F];
+    result += map[bits & 0x3F];
+  } else if (tail === 2) {
+    result += map[(bits >> 10) & 0x3F];
+    result += map[(bits >> 4) & 0x3F];
+    result += map[(bits << 2) & 0x3F];
+    result += map[64];
+  } else if (tail === 1) {
+    result += map[(bits >> 2) & 0x3F];
+    result += map[(bits << 4) & 0x3F];
+    result += map[64];
+    result += map[64];
+  }
+
+  return result;
+}
+
+function isBinary(obj) {
+  return Object.prototype.toString.call(obj) ===  '[object Uint8Array]';
+}
+
+module.exports = new Type('tag:yaml.org,2002:binary', {
+  kind: 'scalar',
+  resolve: resolveYamlBinary,
+  construct: constructYamlBinary,
+  predicate: isBinary,
+  represent: representYamlBinary
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/type/bool.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/type/bool.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/type/bool.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,35 @@
+'use strict';
+
+var Type = require('../type');
+
+function resolveYamlBoolean(data) {
+  if (data === null) return false;
+
+  var max = data.length;
+
+  return (max === 4 && (data === 'true' || data === 'True' || data === 'TRUE')) ||
+         (max === 5 && (data === 'false' || data === 'False' || data === 'FALSE'));
+}
+
+function constructYamlBoolean(data) {
+  return data === 'true' ||
+         data === 'True' ||
+         data === 'TRUE';
+}
+
+function isBoolean(object) {
+  return Object.prototype.toString.call(object) === '[object Boolean]';
+}
+
+module.exports = new Type('tag:yaml.org,2002:bool', {
+  kind: 'scalar',
+  resolve: resolveYamlBoolean,
+  construct: constructYamlBoolean,
+  predicate: isBoolean,
+  represent: {
+    lowercase: function (object) { return object ? 'true' : 'false'; },
+    uppercase: function (object) { return object ? 'TRUE' : 'FALSE'; },
+    camelcase: function (object) { return object ? 'True' : 'False'; }
+  },
+  defaultStyle: 'lowercase'
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/type/float.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/type/float.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/type/float.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,97 @@
+'use strict';
+
+var common = require('../common');
+var Type   = require('../type');
+
+var YAML_FLOAT_PATTERN = new RegExp(
+  // 2.5e4, 2.5 and integers
+  '^(?:[-+]?(?:[0-9][0-9_]*)(?:\\.[0-9_]*)?(?:[eE][-+]?[0-9]+)?' +
+  // .2e4, .2
+  // special case, seems not from spec
+  '|\\.[0-9_]+(?:[eE][-+]?[0-9]+)?' +
+  // .inf
+  '|[-+]?\\.(?:inf|Inf|INF)' +
+  // .nan
+  '|\\.(?:nan|NaN|NAN))$');
+
+function resolveYamlFloat(data) {
+  if (data === null) return false;
+
+  if (!YAML_FLOAT_PATTERN.test(data) ||
+      // Quick hack to not allow integers end with `_`
+      // Probably should update regexp & check speed
+      data[data.length - 1] === '_') {
+    return false;
+  }
+
+  return true;
+}
+
+function constructYamlFloat(data) {
+  var value, sign;
+
+  value  = data.replace(/_/g, '').toLowerCase();
+  sign   = value[0] === '-' ? -1 : 1;
+
+  if ('+-'.indexOf(value[0]) >= 0) {
+    value = value.slice(1);
+  }
+
+  if (value === '.inf') {
+    return (sign === 1) ? Number.POSITIVE_INFINITY : Number.NEGATIVE_INFINITY;
+
+  } else if (value === '.nan') {
+    return NaN;
+  }
+  return sign * parseFloat(value, 10);
+}
+
+
+var SCIENTIFIC_WITHOUT_DOT = /^[-+]?[0-9]+e/;
+
+function representYamlFloat(object, style) {
+  var res;
+
+  if (isNaN(object)) {
+    switch (style) {
+      case 'lowercase': return '.nan';
+      case 'uppercase': return '.NAN';
+      case 'camelcase': return '.NaN';
+    }
+  } else if (Number.POSITIVE_INFINITY === object) {
+    switch (style) {
+      case 'lowercase': return '.inf';
+      case 'uppercase': return '.INF';
+      case 'camelcase': return '.Inf';
+    }
+  } else if (Number.NEGATIVE_INFINITY === object) {
+    switch (style) {
+      case 'lowercase': return '-.inf';
+      case 'uppercase': return '-.INF';
+      case 'camelcase': return '-.Inf';
+    }
+  } else if (common.isNegativeZero(object)) {
+    return '-0.0';
+  }
+
+  res = object.toString(10);
+
+  // JS stringifier can build scientific format without dots: 5e-100,
+  // while YAML requres dot: 5.e-100. Fix it with simple hack
+
+  return SCIENTIFIC_WITHOUT_DOT.test(res) ? res.replace('e', '.e') : res;
+}
+
+function isFloat(object) {
+  return (Object.prototype.toString.call(object) === '[object Number]') &&
+         (object % 1 !== 0 || common.isNegativeZero(object));
+}
+
+module.exports = new Type('tag:yaml.org,2002:float', {
+  kind: 'scalar',
+  resolve: resolveYamlFloat,
+  construct: constructYamlFloat,
+  predicate: isFloat,
+  represent: representYamlFloat,
+  defaultStyle: 'lowercase'
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/type/int.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/type/int.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/type/int.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,156 @@
+'use strict';
+
+var common = require('../common');
+var Type   = require('../type');
+
+function isHexCode(c) {
+  return ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */)) ||
+         ((0x41/* A */ <= c) && (c <= 0x46/* F */)) ||
+         ((0x61/* a */ <= c) && (c <= 0x66/* f */));
+}
+
+function isOctCode(c) {
+  return ((0x30/* 0 */ <= c) && (c <= 0x37/* 7 */));
+}
+
+function isDecCode(c) {
+  return ((0x30/* 0 */ <= c) && (c <= 0x39/* 9 */));
+}
+
+function resolveYamlInteger(data) {
+  if (data === null) return false;
+
+  var max = data.length,
+      index = 0,
+      hasDigits = false,
+      ch;
+
+  if (!max) return false;
+
+  ch = data[index];
+
+  // sign
+  if (ch === '-' || ch === '+') {
+    ch = data[++index];
+  }
+
+  if (ch === '0') {
+    // 0
+    if (index + 1 === max) return true;
+    ch = data[++index];
+
+    // base 2, base 8, base 16
+
+    if (ch === 'b') {
+      // base 2
+      index++;
+
+      for (; index < max; index++) {
+        ch = data[index];
+        if (ch === '_') continue;
+        if (ch !== '0' && ch !== '1') return false;
+        hasDigits = true;
+      }
+      return hasDigits && ch !== '_';
+    }
+
+
+    if (ch === 'x') {
+      // base 16
+      index++;
+
+      for (; index < max; index++) {
+        ch = data[index];
+        if (ch === '_') continue;
+        if (!isHexCode(data.charCodeAt(index))) return false;
+        hasDigits = true;
+      }
+      return hasDigits && ch !== '_';
+    }
+
+
+    if (ch === 'o') {
+      // base 8
+      index++;
+
+      for (; index < max; index++) {
+        ch = data[index];
+        if (ch === '_') continue;
+        if (!isOctCode(data.charCodeAt(index))) return false;
+        hasDigits = true;
+      }
+      return hasDigits && ch !== '_';
+    }
+  }
+
+  // base 10 (except 0)
+
+  // value should not start with `_`;
+  if (ch === '_') return false;
+
+  for (; index < max; index++) {
+    ch = data[index];
+    if (ch === '_') continue;
+    if (!isDecCode(data.charCodeAt(index))) {
+      return false;
+    }
+    hasDigits = true;
+  }
+
+  // Should have digits and should not end with `_`
+  if (!hasDigits || ch === '_') return false;
+
+  return true;
+}
+
+function constructYamlInteger(data) {
+  var value = data, sign = 1, ch;
+
+  if (value.indexOf('_') !== -1) {
+    value = value.replace(/_/g, '');
+  }
+
+  ch = value[0];
+
+  if (ch === '-' || ch === '+') {
+    if (ch === '-') sign = -1;
+    value = value.slice(1);
+    ch = value[0];
+  }
+
+  if (value === '0') return 0;
+
+  if (ch === '0') {
+    if (value[1] === 'b') return sign * parseInt(value.slice(2), 2);
+    if (value[1] === 'x') return sign * parseInt(value.slice(2), 16);
+    if (value[1] === 'o') return sign * parseInt(value.slice(2), 8);
+  }
+
+  return sign * parseInt(value, 10);
+}
+
+function isInteger(object) {
+  return (Object.prototype.toString.call(object)) === '[object Number]' &&
+         (object % 1 === 0 && !common.isNegativeZero(object));
+}
+
+module.exports = new Type('tag:yaml.org,2002:int', {
+  kind: 'scalar',
+  resolve: resolveYamlInteger,
+  construct: constructYamlInteger,
+  predicate: isInteger,
+  represent: {
+    binary:      function (obj) { return obj >= 0 ? '0b' + obj.toString(2) : '-0b' + obj.toString(2).slice(1); },
+    octal:       function (obj) { return obj >= 0 ? '0o'  + obj.toString(8) : '-0o'  + obj.toString(8).slice(1); },
+    decimal:     function (obj) { return obj.toString(10); },
+    /* eslint-disable max-len */
+    hexadecimal: function (obj) { return obj >= 0 ? '0x' + obj.toString(16).toUpperCase() :  '-0x' + obj.toString(16).toUpperCase().slice(1); }
+  },
+  defaultStyle: 'decimal',
+  styleAliases: {
+    binary:      [ 2,  'bin' ],
+    octal:       [ 8,  'oct' ],
+    decimal:     [ 10, 'dec' ],
+    hexadecimal: [ 16, 'hex' ]
+  }
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/type/map.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/type/map.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/type/map.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,8 @@
+'use strict';
+
+var Type = require('../type');
+
+module.exports = new Type('tag:yaml.org,2002:map', {
+  kind: 'mapping',
+  construct: function (data) { return data !== null ? data : {}; }
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/type/merge.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/type/merge.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/type/merge.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,12 @@
+'use strict';
+
+var Type = require('../type');
+
+function resolveYamlMerge(data) {
+  return data === '<<' || data === null;
+}
+
+module.exports = new Type('tag:yaml.org,2002:merge', {
+  kind: 'scalar',
+  resolve: resolveYamlMerge
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/type/null.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/type/null.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/type/null.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,35 @@
+'use strict';
+
+var Type = require('../type');
+
+function resolveYamlNull(data) {
+  if (data === null) return true;
+
+  var max = data.length;
+
+  return (max === 1 && data === '~') ||
+         (max === 4 && (data === 'null' || data === 'Null' || data === 'NULL'));
+}
+
+function constructYamlNull() {
+  return null;
+}
+
+function isNull(object) {
+  return object === null;
+}
+
+module.exports = new Type('tag:yaml.org,2002:null', {
+  kind: 'scalar',
+  resolve: resolveYamlNull,
+  construct: constructYamlNull,
+  predicate: isNull,
+  represent: {
+    canonical: function () { return '~';    },
+    lowercase: function () { return 'null'; },
+    uppercase: function () { return 'NULL'; },
+    camelcase: function () { return 'Null'; },
+    empty:     function () { return '';     }
+  },
+  defaultStyle: 'lowercase'
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/type/omap.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/type/omap.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/type/omap.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,44 @@
+'use strict';
+
+var Type = require('../type');
+
+var _hasOwnProperty = Object.prototype.hasOwnProperty;
+var _toString       = Object.prototype.toString;
+
+function resolveYamlOmap(data) {
+  if (data === null) return true;
+
+  var objectKeys = [], index, length, pair, pairKey, pairHasKey,
+      object = data;
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    pair = object[index];
+    pairHasKey = false;
+
+    if (_toString.call(pair) !== '[object Object]') return false;
+
+    for (pairKey in pair) {
+      if (_hasOwnProperty.call(pair, pairKey)) {
+        if (!pairHasKey) pairHasKey = true;
+        else return false;
+      }
+    }
+
+    if (!pairHasKey) return false;
+
+    if (objectKeys.indexOf(pairKey) === -1) objectKeys.push(pairKey);
+    else return false;
+  }
+
+  return true;
+}
+
+function constructYamlOmap(data) {
+  return data !== null ? data : [];
+}
+
+module.exports = new Type('tag:yaml.org,2002:omap', {
+  kind: 'sequence',
+  resolve: resolveYamlOmap,
+  construct: constructYamlOmap
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/type/pairs.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/type/pairs.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/type/pairs.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,53 @@
+'use strict';
+
+var Type = require('../type');
+
+var _toString = Object.prototype.toString;
+
+function resolveYamlPairs(data) {
+  if (data === null) return true;
+
+  var index, length, pair, keys, result,
+      object = data;
+
+  result = new Array(object.length);
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    pair = object[index];
+
+    if (_toString.call(pair) !== '[object Object]') return false;
+
+    keys = Object.keys(pair);
+
+    if (keys.length !== 1) return false;
+
+    result[index] = [ keys[0], pair[keys[0]] ];
+  }
+
+  return true;
+}
+
+function constructYamlPairs(data) {
+  if (data === null) return [];
+
+  var index, length, pair, keys, result,
+      object = data;
+
+  result = new Array(object.length);
+
+  for (index = 0, length = object.length; index < length; index += 1) {
+    pair = object[index];
+
+    keys = Object.keys(pair);
+
+    result[index] = [ keys[0], pair[keys[0]] ];
+  }
+
+  return result;
+}
+
+module.exports = new Type('tag:yaml.org,2002:pairs', {
+  kind: 'sequence',
+  resolve: resolveYamlPairs,
+  construct: constructYamlPairs
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/type/seq.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/type/seq.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/type/seq.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,8 @@
+'use strict';
+
+var Type = require('../type');
+
+module.exports = new Type('tag:yaml.org,2002:seq', {
+  kind: 'sequence',
+  construct: function (data) { return data !== null ? data : []; }
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/type/set.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/type/set.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/type/set.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,29 @@
+'use strict';
+
+var Type = require('../type');
+
+var _hasOwnProperty = Object.prototype.hasOwnProperty;
+
+function resolveYamlSet(data) {
+  if (data === null) return true;
+
+  var key, object = data;
+
+  for (key in object) {
+    if (_hasOwnProperty.call(object, key)) {
+      if (object[key] !== null) return false;
+    }
+  }
+
+  return true;
+}
+
+function constructYamlSet(data) {
+  return data !== null ? data : {};
+}
+
+module.exports = new Type('tag:yaml.org,2002:set', {
+  kind: 'mapping',
+  resolve: resolveYamlSet,
+  construct: constructYamlSet
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/type/str.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/type/str.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/type/str.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,8 @@
+'use strict';
+
+var Type = require('../type');
+
+module.exports = new Type('tag:yaml.org,2002:str', {
+  kind: 'scalar',
+  construct: function (data) { return data !== null ? data : ''; }
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/lib/type/timestamp.js
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/lib/type/timestamp.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/lib/type/timestamp.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,88 @@
+'use strict';
+
+var Type = require('../type');
+
+var YAML_DATE_REGEXP = new RegExp(
+  '^([0-9][0-9][0-9][0-9])'          + // [1] year
+  '-([0-9][0-9])'                    + // [2] month
+  '-([0-9][0-9])$');                   // [3] day
+
+var YAML_TIMESTAMP_REGEXP = new RegExp(
+  '^([0-9][0-9][0-9][0-9])'          + // [1] year
+  '-([0-9][0-9]?)'                   + // [2] month
+  '-([0-9][0-9]?)'                   + // [3] day
+  '(?:[Tt]|[ \\t]+)'                 + // ...
+  '([0-9][0-9]?)'                    + // [4] hour
+  ':([0-9][0-9])'                    + // [5] minute
+  ':([0-9][0-9])'                    + // [6] second
+  '(?:\\.([0-9]*))?'                 + // [7] fraction
+  '(?:[ \\t]*(Z|([-+])([0-9][0-9]?)' + // [8] tz [9] tz_sign [10] tz_hour
+  '(?::([0-9][0-9]))?))?$');           // [11] tz_minute
+
+function resolveYamlTimestamp(data) {
+  if (data === null) return false;
+  if (YAML_DATE_REGEXP.exec(data) !== null) return true;
+  if (YAML_TIMESTAMP_REGEXP.exec(data) !== null) return true;
+  return false;
+}
+
+function constructYamlTimestamp(data) {
+  var match, year, month, day, hour, minute, second, fraction = 0,
+      delta = null, tz_hour, tz_minute, date;
+
+  match = YAML_DATE_REGEXP.exec(data);
+  if (match === null) match = YAML_TIMESTAMP_REGEXP.exec(data);
+
+  if (match === null) throw new Error('Date resolve error');
+
+  // match: [1] year [2] month [3] day
+
+  year = +(match[1]);
+  month = +(match[2]) - 1; // JS month starts with 0
+  day = +(match[3]);
+
+  if (!match[4]) { // no hour
+    return new Date(Date.UTC(year, month, day));
+  }
+
+  // match: [4] hour [5] minute [6] second [7] fraction
+
+  hour = +(match[4]);
+  minute = +(match[5]);
+  second = +(match[6]);
+
+  if (match[7]) {
+    fraction = match[7].slice(0, 3);
+    while (fraction.length < 3) { // milli-seconds
+      fraction += '0';
+    }
+    fraction = +fraction;
+  }
+
+  // match: [8] tz [9] tz_sign [10] tz_hour [11] tz_minute
+
+  if (match[9]) {
+    tz_hour = +(match[10]);
+    tz_minute = +(match[11] || 0);
+    delta = (tz_hour * 60 + tz_minute) * 60000; // delta in mili-seconds
+    if (match[9] === '-') delta = -delta;
+  }
+
+  date = new Date(Date.UTC(year, month, day, hour, minute, second, fraction));
+
+  if (delta) date.setTime(date.getTime() - delta);
+
+  return date;
+}
+
+function representYamlTimestamp(object /*, style*/) {
+  return object.toISOString();
+}
+
+module.exports = new Type('tag:yaml.org,2002:timestamp', {
+  kind: 'scalar',
+  resolve: resolveYamlTimestamp,
+  construct: constructYamlTimestamp,
+  instanceOf: Date,
+  represent: representYamlTimestamp
+});
Index: frontend/node_modules/eslint/node_modules/js-yaml/package.json
===================================================================
--- frontend/node_modules/eslint/node_modules/js-yaml/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/js-yaml/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,66 @@
+{
+  "name": "js-yaml",
+  "version": "4.1.1",
+  "description": "YAML 1.2 parser and serializer",
+  "keywords": [
+    "yaml",
+    "parser",
+    "serializer",
+    "pyyaml"
+  ],
+  "author": "Vladimir Zapparov <dervus.grim@gmail.com>",
+  "contributors": [
+    "Aleksey V Zapparov <ixti@member.fsf.org> (http://www.ixti.net/)",
+    "Vitaly Puzrin <vitaly@rcdesign.ru> (https://github.com/puzrin)",
+    "Martin Grenfell <martin.grenfell@gmail.com> (http://got-ravings.blogspot.com)"
+  ],
+  "license": "MIT",
+  "repository": "nodeca/js-yaml",
+  "files": [
+    "index.js",
+    "lib/",
+    "bin/",
+    "dist/"
+  ],
+  "bin": {
+    "js-yaml": "bin/js-yaml.js"
+  },
+  "module": "./dist/js-yaml.mjs",
+  "exports": {
+    ".": {
+      "import": "./dist/js-yaml.mjs",
+      "require": "./index.js"
+    },
+    "./package.json": "./package.json"
+  },
+  "scripts": {
+    "lint": "eslint .",
+    "test": "npm run lint && mocha",
+    "coverage": "npm run lint && nyc mocha && nyc report --reporter html",
+    "demo": "npm run lint && node support/build_demo.js",
+    "gh-demo": "npm run demo && gh-pages -d demo -f",
+    "browserify": "rollup -c support/rollup.config.js",
+    "prepublishOnly": "npm run gh-demo"
+  },
+  "unpkg": "dist/js-yaml.min.js",
+  "jsdelivr": "dist/js-yaml.min.js",
+  "dependencies": {
+    "argparse": "^2.0.1"
+  },
+  "devDependencies": {
+    "@rollup/plugin-commonjs": "^17.0.0",
+    "@rollup/plugin-node-resolve": "^11.0.0",
+    "ansi": "^0.3.1",
+    "benchmark": "^2.1.4",
+    "codemirror": "^5.13.4",
+    "eslint": "^7.0.0",
+    "fast-check": "^2.8.0",
+    "gh-pages": "^3.1.0",
+    "mocha": "^8.2.1",
+    "nyc": "^15.1.0",
+    "rollup": "^2.34.1",
+    "rollup-plugin-node-polyfills": "^0.2.1",
+    "rollup-plugin-terser": "^7.0.2",
+    "shelljs": "^0.8.4"
+  }
+}
Index: frontend/node_modules/eslint/node_modules/locate-path/index.d.ts
===================================================================
--- frontend/node_modules/eslint/node_modules/locate-path/index.d.ts	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/locate-path/index.d.ts	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,83 @@
+declare namespace locatePath {
+	interface Options {
+		/**
+		Current working directory.
+
+		@default process.cwd()
+		*/
+		readonly cwd?: string;
+
+		/**
+		Type of path to match.
+
+		@default 'file'
+		*/
+		readonly type?: 'file' | 'directory';
+
+		/**
+		Allow symbolic links to match if they point to the requested path type.
+
+		@default true
+		*/
+		readonly allowSymlinks?: boolean;
+	}
+
+	interface AsyncOptions extends Options {
+		/**
+		Number of concurrently pending promises. Minimum: `1`.
+
+		@default Infinity
+		*/
+		readonly concurrency?: number;
+
+		/**
+		Preserve `paths` order when searching.
+
+		Disable this to improve performance if you don't care about the order.
+
+		@default true
+		*/
+		readonly preserveOrder?: boolean;
+	}
+}
+
+declare const locatePath: {
+	/**
+	Synchronously get the first path that exists on disk of multiple paths.
+
+	@param paths - Paths to check.
+	@returns The first path that exists or `undefined` if none exists.
+	*/
+	sync: (
+		paths: Iterable<string>,
+		options?: locatePath.Options
+	) => string | undefined;
+
+	/**
+	Get the first path that exists on disk of multiple paths.
+
+	@param paths - Paths to check.
+	@returns The first path that exists or `undefined` if none exists.
+
+	@example
+	```
+	import locatePath = require('locate-path');
+
+	const files = [
+		'unicorn.png',
+		'rainbow.png', // Only this one actually exists on disk
+		'pony.png'
+	];
+
+	(async () => {
+		console(await locatePath(files));
+		//=> 'rainbow'
+	})();
+	```
+	*/
+	(paths: Iterable<string>, options?: locatePath.AsyncOptions): Promise<
+	string | undefined
+	>;
+};
+
+export = locatePath;
Index: frontend/node_modules/eslint/node_modules/locate-path/index.js
===================================================================
--- frontend/node_modules/eslint/node_modules/locate-path/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/locate-path/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,68 @@
+'use strict';
+const path = require('path');
+const fs = require('fs');
+const {promisify} = require('util');
+const pLocate = require('p-locate');
+
+const fsStat = promisify(fs.stat);
+const fsLStat = promisify(fs.lstat);
+
+const typeMappings = {
+	directory: 'isDirectory',
+	file: 'isFile'
+};
+
+function checkType({type}) {
+	if (type in typeMappings) {
+		return;
+	}
+
+	throw new Error(`Invalid type specified: ${type}`);
+}
+
+const matchType = (type, stat) => type === undefined || stat[typeMappings[type]]();
+
+module.exports = async (paths, options) => {
+	options = {
+		cwd: process.cwd(),
+		type: 'file',
+		allowSymlinks: true,
+		...options
+	};
+
+	checkType(options);
+
+	const statFn = options.allowSymlinks ? fsStat : fsLStat;
+
+	return pLocate(paths, async path_ => {
+		try {
+			const stat = await statFn(path.resolve(options.cwd, path_));
+			return matchType(options.type, stat);
+		} catch {
+			return false;
+		}
+	}, options);
+};
+
+module.exports.sync = (paths, options) => {
+	options = {
+		cwd: process.cwd(),
+		allowSymlinks: true,
+		type: 'file',
+		...options
+	};
+
+	checkType(options);
+
+	const statFn = options.allowSymlinks ? fs.statSync : fs.lstatSync;
+
+	for (const path_ of paths) {
+		try {
+			const stat = statFn(path.resolve(options.cwd, path_));
+
+			if (matchType(options.type, stat)) {
+				return path_;
+			}
+		} catch {}
+	}
+};
Index: frontend/node_modules/eslint/node_modules/locate-path/license
===================================================================
--- frontend/node_modules/eslint/node_modules/locate-path/license	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/locate-path/license	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Index: frontend/node_modules/eslint/node_modules/locate-path/package.json
===================================================================
--- frontend/node_modules/eslint/node_modules/locate-path/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/locate-path/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,46 @@
+{
+	"name": "locate-path",
+	"version": "6.0.0",
+	"description": "Get the first path that exists on disk of multiple paths",
+	"license": "MIT",
+	"repository": "sindresorhus/locate-path",
+	"funding": "https://github.com/sponsors/sindresorhus",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "https://sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=10"
+	},
+	"scripts": {
+		"test": "xo && ava && tsd"
+	},
+	"files": [
+		"index.js",
+		"index.d.ts"
+	],
+	"keywords": [
+		"locate",
+		"path",
+		"paths",
+		"file",
+		"files",
+		"exists",
+		"find",
+		"finder",
+		"search",
+		"searcher",
+		"array",
+		"iterable",
+		"iterator"
+	],
+	"dependencies": {
+		"p-locate": "^5.0.0"
+	},
+	"devDependencies": {
+		"ava": "^2.4.0",
+		"tsd": "^0.13.1",
+		"xo": "^0.32.1"
+	}
+}
Index: frontend/node_modules/eslint/node_modules/locate-path/readme.md
===================================================================
--- frontend/node_modules/eslint/node_modules/locate-path/readme.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/locate-path/readme.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,125 @@
+# locate-path [![Build Status](https://travis-ci.com/sindresorhus/locate-path.svg?branch=master)](https://travis-ci.com/github/sindresorhus/locate-path)
+
+> Get the first path that exists on disk of multiple paths
+
+## Install
+
+```
+$ npm install locate-path
+```
+
+## Usage
+
+Here we find the first file that exists on disk, in array order.
+
+```js
+const locatePath = require('locate-path');
+
+const files = [
+	'unicorn.png',
+	'rainbow.png', // Only this one actually exists on disk
+	'pony.png'
+];
+
+(async () => {
+	console(await locatePath(files));
+	//=> 'rainbow'
+})();
+```
+
+## API
+
+### locatePath(paths, options?)
+
+Returns a `Promise<string>` for the first path that exists or `undefined` if none exists.
+
+#### paths
+
+Type: `Iterable<string>`
+
+Paths to check.
+
+#### options
+
+Type: `object`
+
+##### concurrency
+
+Type: `number`\
+Default: `Infinity`\
+Minimum: `1`
+
+Number of concurrently pending promises.
+
+##### preserveOrder
+
+Type: `boolean`\
+Default: `true`
+
+Preserve `paths` order when searching.
+
+Disable this to improve performance if you don't care about the order.
+
+##### cwd
+
+Type: `string`\
+Default: `process.cwd()`
+
+Current working directory.
+
+##### type
+
+Type: `string`\
+Default: `'file'`\
+Values: `'file' | 'directory'`
+
+The type of paths that can match.
+
+##### allowSymlinks
+
+Type: `boolean`\
+Default: `true`
+
+Allow symbolic links to match if they point to the chosen path type.
+
+### locatePath.sync(paths, options?)
+
+Returns the first path that exists or `undefined` if none exists.
+
+#### paths
+
+Type: `Iterable<string>`
+
+Paths to check.
+
+#### options
+
+Type: `object`
+
+##### cwd
+
+Same as above.
+
+##### type
+
+Same as above.
+
+##### allowSymlinks
+
+Same as above.
+
+## Related
+
+- [path-exists](https://github.com/sindresorhus/path-exists) - Check if a path exists
+
+---
+
+<div align="center">
+	<b>
+		<a href="https://tidelift.com/subscription/pkg/npm-locate-path?utm_source=npm-locate-path&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
+	</b>
+	<br>
+	<sub>
+		Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
+	</sub>
+</div>
Index: frontend/node_modules/eslint/node_modules/p-limit/index.d.ts
===================================================================
--- frontend/node_modules/eslint/node_modules/p-limit/index.d.ts	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/p-limit/index.d.ts	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,42 @@
+declare namespace pLimit {
+	interface Limit {
+		/**
+		The number of promises that are currently running.
+		*/
+		readonly activeCount: number;
+
+		/**
+		The number of promises that are waiting to run (i.e. their internal `fn` was not called yet).
+		*/
+		readonly pendingCount: number;
+
+		/**
+		Discard pending promises that are waiting to run.
+
+		This might be useful if you want to teardown the queue at the end of your program's lifecycle or discard any function calls referencing an intermediary state of your app.
+
+		Note: This does not cancel promises that are already running.
+		*/
+		clearQueue: () => void;
+
+		/**
+		@param fn - Promise-returning/async function.
+		@param arguments - Any arguments to pass through to `fn`. Support for passing arguments on to the `fn` is provided in order to be able to avoid creating unnecessary closures. You probably don't need this optimization unless you're pushing a lot of functions.
+		@returns The promise returned by calling `fn(...arguments)`.
+		*/
+		<Arguments extends unknown[], ReturnType>(
+			fn: (...arguments: Arguments) => PromiseLike<ReturnType> | ReturnType,
+			...arguments: Arguments
+		): Promise<ReturnType>;
+	}
+}
+
+/**
+Run multiple promise-returning & async functions with limited concurrency.
+
+@param concurrency - Concurrency limit. Minimum: `1`.
+@returns A `limit` function.
+*/
+declare function pLimit(concurrency: number): pLimit.Limit;
+
+export = pLimit;
Index: frontend/node_modules/eslint/node_modules/p-limit/index.js
===================================================================
--- frontend/node_modules/eslint/node_modules/p-limit/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/p-limit/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,71 @@
+'use strict';
+const Queue = require('yocto-queue');
+
+const pLimit = concurrency => {
+	if (!((Number.isInteger(concurrency) || concurrency === Infinity) && concurrency > 0)) {
+		throw new TypeError('Expected `concurrency` to be a number from 1 and up');
+	}
+
+	const queue = new Queue();
+	let activeCount = 0;
+
+	const next = () => {
+		activeCount--;
+
+		if (queue.size > 0) {
+			queue.dequeue()();
+		}
+	};
+
+	const run = async (fn, resolve, ...args) => {
+		activeCount++;
+
+		const result = (async () => fn(...args))();
+
+		resolve(result);
+
+		try {
+			await result;
+		} catch {}
+
+		next();
+	};
+
+	const enqueue = (fn, resolve, ...args) => {
+		queue.enqueue(run.bind(null, fn, resolve, ...args));
+
+		(async () => {
+			// This function needs to wait until the next microtask before comparing
+			// `activeCount` to `concurrency`, because `activeCount` is updated asynchronously
+			// when the run function is dequeued and called. The comparison in the if-statement
+			// needs to happen asynchronously as well to get an up-to-date value for `activeCount`.
+			await Promise.resolve();
+
+			if (activeCount < concurrency && queue.size > 0) {
+				queue.dequeue()();
+			}
+		})();
+	};
+
+	const generator = (fn, ...args) => new Promise(resolve => {
+		enqueue(fn, resolve, ...args);
+	});
+
+	Object.defineProperties(generator, {
+		activeCount: {
+			get: () => activeCount
+		},
+		pendingCount: {
+			get: () => queue.size
+		},
+		clearQueue: {
+			value: () => {
+				queue.clear();
+			}
+		}
+	});
+
+	return generator;
+};
+
+module.exports = pLimit;
Index: frontend/node_modules/eslint/node_modules/p-limit/license
===================================================================
--- frontend/node_modules/eslint/node_modules/p-limit/license	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/p-limit/license	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Index: frontend/node_modules/eslint/node_modules/p-limit/package.json
===================================================================
--- frontend/node_modules/eslint/node_modules/p-limit/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/p-limit/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,52 @@
+{
+	"name": "p-limit",
+	"version": "3.1.0",
+	"description": "Run multiple promise-returning & async functions with limited concurrency",
+	"license": "MIT",
+	"repository": "sindresorhus/p-limit",
+	"funding": "https://github.com/sponsors/sindresorhus",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "https://sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=10"
+	},
+	"scripts": {
+		"test": "xo && ava && tsd"
+	},
+	"files": [
+		"index.js",
+		"index.d.ts"
+	],
+	"keywords": [
+		"promise",
+		"limit",
+		"limited",
+		"concurrency",
+		"throttle",
+		"throat",
+		"rate",
+		"batch",
+		"ratelimit",
+		"task",
+		"queue",
+		"async",
+		"await",
+		"promises",
+		"bluebird"
+	],
+	"dependencies": {
+		"yocto-queue": "^0.1.0"
+	},
+	"devDependencies": {
+		"ava": "^2.4.0",
+		"delay": "^4.4.0",
+		"in-range": "^2.0.0",
+		"random-int": "^2.0.1",
+		"time-span": "^4.0.0",
+		"tsd": "^0.13.1",
+		"xo": "^0.35.0"
+	}
+}
Index: frontend/node_modules/eslint/node_modules/p-limit/readme.md
===================================================================
--- frontend/node_modules/eslint/node_modules/p-limit/readme.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/p-limit/readme.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,101 @@
+# p-limit
+
+> Run multiple promise-returning & async functions with limited concurrency
+
+## Install
+
+```
+$ npm install p-limit
+```
+
+## Usage
+
+```js
+const pLimit = require('p-limit');
+
+const limit = pLimit(1);
+
+const input = [
+	limit(() => fetchSomething('foo')),
+	limit(() => fetchSomething('bar')),
+	limit(() => doSomething())
+];
+
+(async () => {
+	// Only one promise is run at once
+	const result = await Promise.all(input);
+	console.log(result);
+})();
+```
+
+## API
+
+### pLimit(concurrency)
+
+Returns a `limit` function.
+
+#### concurrency
+
+Type: `number`\
+Minimum: `1`\
+Default: `Infinity`
+
+Concurrency limit.
+
+### limit(fn, ...args)
+
+Returns the promise returned by calling `fn(...args)`.
+
+#### fn
+
+Type: `Function`
+
+Promise-returning/async function.
+
+#### args
+
+Any arguments to pass through to `fn`.
+
+Support for passing arguments on to the `fn` is provided in order to be able to avoid creating unnecessary closures. You probably don't need this optimization unless you're pushing a *lot* of functions.
+
+### limit.activeCount
+
+The number of promises that are currently running.
+
+### limit.pendingCount
+
+The number of promises that are waiting to run (i.e. their internal `fn` was not called yet).
+
+### limit.clearQueue()
+
+Discard pending promises that are waiting to run.
+
+This might be useful if you want to teardown the queue at the end of your program's lifecycle or discard any function calls referencing an intermediary state of your app.
+
+Note: This does not cancel promises that are already running.
+
+## FAQ
+
+### How is this different from the [`p-queue`](https://github.com/sindresorhus/p-queue) package?
+
+This package is only about limiting the number of concurrent executions, while `p-queue` is a fully featured queue implementation with lots of different options, introspection, and ability to pause the queue.
+
+## Related
+
+- [p-queue](https://github.com/sindresorhus/p-queue) - Promise queue with concurrency control
+- [p-throttle](https://github.com/sindresorhus/p-throttle) - Throttle promise-returning & async functions
+- [p-debounce](https://github.com/sindresorhus/p-debounce) - Debounce promise-returning & async functions
+- [p-all](https://github.com/sindresorhus/p-all) - Run promise-returning & async functions concurrently with optional limited concurrency
+- [More…](https://github.com/sindresorhus/promise-fun)
+
+---
+
+<div align="center">
+	<b>
+		<a href="https://tidelift.com/subscription/pkg/npm-p-limit?utm_source=npm-p-limit&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
+	</b>
+	<br>
+	<sub>
+		Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
+	</sub>
+</div>
Index: frontend/node_modules/eslint/node_modules/p-locate/index.d.ts
===================================================================
--- frontend/node_modules/eslint/node_modules/p-locate/index.d.ts	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/p-locate/index.d.ts	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,53 @@
+declare namespace pLocate {
+	interface Options {
+		/**
+		Number of concurrently pending promises returned by `tester`. Minimum: `1`.
+
+		@default Infinity
+		*/
+		readonly concurrency?: number;
+
+		/**
+		Preserve `input` order when searching.
+
+		Disable this to improve performance if you don't care about the order.
+
+		@default true
+		*/
+		readonly preserveOrder?: boolean;
+	}
+}
+
+/**
+Get the first fulfilled promise that satisfies the provided testing function.
+
+@param input - An iterable of promises/values to test.
+@param tester - This function will receive resolved values from `input` and is expected to return a `Promise<boolean>` or `boolean`.
+@returns A `Promise` that is fulfilled when `tester` resolves to `true` or the iterable is done, or rejects if any of the promises reject. The fulfilled value is the current iterable value or `undefined` if `tester` never resolved to `true`.
+
+@example
+```
+import pathExists = require('path-exists');
+import pLocate = require('p-locate');
+
+const files = [
+	'unicorn.png',
+	'rainbow.png', // Only this one actually exists on disk
+	'pony.png'
+];
+
+(async () => {
+	const foundPath = await pLocate(files, file => pathExists(file));
+
+	console.log(foundPath);
+	//=> 'rainbow'
+})();
+```
+*/
+declare function pLocate<ValueType>(
+	input: Iterable<PromiseLike<ValueType> | ValueType>,
+	tester: (element: ValueType) => PromiseLike<boolean> | boolean,
+	options?: pLocate.Options
+): Promise<ValueType | undefined>;
+
+export = pLocate;
Index: frontend/node_modules/eslint/node_modules/p-locate/index.js
===================================================================
--- frontend/node_modules/eslint/node_modules/p-locate/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/p-locate/index.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,50 @@
+'use strict';
+const pLimit = require('p-limit');
+
+class EndError extends Error {
+	constructor(value) {
+		super();
+		this.value = value;
+	}
+}
+
+// The input can also be a promise, so we await it
+const testElement = async (element, tester) => tester(await element);
+
+// The input can also be a promise, so we `Promise.all()` them both
+const finder = async element => {
+	const values = await Promise.all(element);
+	if (values[1] === true) {
+		throw new EndError(values[0]);
+	}
+
+	return false;
+};
+
+const pLocate = async (iterable, tester, options) => {
+	options = {
+		concurrency: Infinity,
+		preserveOrder: true,
+		...options
+	};
+
+	const limit = pLimit(options.concurrency);
+
+	// Start all the promises concurrently with optional limit
+	const items = [...iterable].map(element => [element, limit(testElement, element, tester)]);
+
+	// Check the promises either serially or concurrently
+	const checkLimit = pLimit(options.preserveOrder ? 1 : Infinity);
+
+	try {
+		await Promise.all(items.map(element => checkLimit(finder, element)));
+	} catch (error) {
+		if (error instanceof EndError) {
+			return error.value;
+		}
+
+		throw error;
+	}
+};
+
+module.exports = pLocate;
Index: frontend/node_modules/eslint/node_modules/p-locate/license
===================================================================
--- frontend/node_modules/eslint/node_modules/p-locate/license	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/p-locate/license	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (https://sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Index: frontend/node_modules/eslint/node_modules/p-locate/package.json
===================================================================
--- frontend/node_modules/eslint/node_modules/p-locate/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/p-locate/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,54 @@
+{
+	"name": "p-locate",
+	"version": "5.0.0",
+	"description": "Get the first fulfilled promise that satisfies the provided testing function",
+	"license": "MIT",
+	"repository": "sindresorhus/p-locate",
+	"funding": "https://github.com/sponsors/sindresorhus",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "https://sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=10"
+	},
+	"scripts": {
+		"test": "xo && ava && tsd"
+	},
+	"files": [
+		"index.js",
+		"index.d.ts"
+	],
+	"keywords": [
+		"promise",
+		"locate",
+		"find",
+		"finder",
+		"search",
+		"searcher",
+		"test",
+		"array",
+		"collection",
+		"iterable",
+		"iterator",
+		"race",
+		"fulfilled",
+		"fastest",
+		"async",
+		"await",
+		"promises",
+		"bluebird"
+	],
+	"dependencies": {
+		"p-limit": "^3.0.2"
+	},
+	"devDependencies": {
+		"ava": "^2.4.0",
+		"delay": "^4.1.0",
+		"in-range": "^2.0.0",
+		"time-span": "^4.0.0",
+		"tsd": "^0.13.1",
+		"xo": "^0.32.1"
+	}
+}
Index: frontend/node_modules/eslint/node_modules/p-locate/readme.md
===================================================================
--- frontend/node_modules/eslint/node_modules/p-locate/readme.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/node_modules/p-locate/readme.md	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,93 @@
+# p-locate [![Build Status](https://travis-ci.com/sindresorhus/p-locate.svg?branch=master)](https://travis-ci.com/github/sindresorhus/p-locate)
+
+> Get the first fulfilled promise that satisfies the provided testing function
+
+Think of it like an async version of [`Array#find`](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/find).
+
+## Install
+
+```
+$ npm install p-locate
+```
+
+## Usage
+
+Here we find the first file that exists on disk, in array order.
+
+```js
+const pathExists = require('path-exists');
+const pLocate = require('p-locate');
+
+const files = [
+	'unicorn.png',
+	'rainbow.png', // Only this one actually exists on disk
+	'pony.png'
+];
+
+(async () => {
+	const foundPath = await pLocate(files, file => pathExists(file));
+
+	console.log(foundPath);
+	//=> 'rainbow'
+})();
+```
+
+*The above is just an example. Use [`locate-path`](https://github.com/sindresorhus/locate-path) if you need this.*
+
+## API
+
+### pLocate(input, tester, options?)
+
+Returns a `Promise` that is fulfilled when `tester` resolves to `true` or the iterable is done, or rejects if any of the promises reject. The fulfilled value is the current iterable value or `undefined` if `tester` never resolved to `true`.
+
+#### input
+
+Type: `Iterable<Promise | unknown>`
+
+An iterable of promises/values to test.
+
+#### tester(element)
+
+Type: `Function`
+
+This function will receive resolved values from `input` and is expected to return a `Promise<boolean>` or `boolean`.
+
+#### options
+
+Type: `object`
+
+##### concurrency
+
+Type: `number`\
+Default: `Infinity`\
+Minimum: `1`
+
+Number of concurrently pending promises returned by `tester`.
+
+##### preserveOrder
+
+Type: `boolean`\
+Default: `true`
+
+Preserve `input` order when searching.
+
+Disable this to improve performance if you don't care about the order.
+
+## Related
+
+- [p-map](https://github.com/sindresorhus/p-map) - Map over promises concurrently
+- [p-filter](https://github.com/sindresorhus/p-filter) - Filter promises concurrently
+- [p-any](https://github.com/sindresorhus/p-any) - Wait for any promise to be fulfilled
+- [More…](https://github.com/sindresorhus/promise-fun)
+
+---
+
+<div align="center">
+	<b>
+		<a href="https://tidelift.com/subscription/pkg/npm-p-locate?utm_source=npm-p-locate&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
+	</b>
+	<br>
+	<sub>
+		Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
+	</sub>
+</div>
Index: frontend/node_modules/eslint/package.json
===================================================================
--- frontend/node_modules/eslint/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/eslint/package.json	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,181 @@
+{
+  "name": "eslint",
+  "version": "8.57.1",
+  "author": "Nicholas C. Zakas <nicholas+npm@nczconsulting.com>",
+  "description": "An AST-based pattern checker for JavaScript.",
+  "bin": {
+    "eslint": "./bin/eslint.js"
+  },
+  "main": "./lib/api.js",
+  "exports": {
+    "./package.json": "./package.json",
+    ".": "./lib/api.js",
+    "./use-at-your-own-risk": "./lib/unsupported-api.js"
+  },
+  "scripts": {
+    "build:docs:update-links": "node tools/fetch-docs-links.js",
+    "build:site": "node Makefile.js gensite",
+    "build:webpack": "node Makefile.js webpack",
+    "build:readme": "node tools/update-readme.js",
+    "lint": "node Makefile.js lint",
+    "lint:docs:js": "node Makefile.js lintDocsJS",
+    "lint:docs:rule-examples": "node Makefile.js checkRuleExamples",
+    "lint:fix": "node Makefile.js lint -- fix",
+    "lint:fix:docs:js": "node Makefile.js lintDocsJS -- fix",
+    "release:generate:alpha": "node Makefile.js generatePrerelease -- alpha",
+    "release:generate:beta": "node Makefile.js generatePrerelease -- beta",
+    "release:generate:latest": "node Makefile.js generateRelease -- latest",
+    "release:generate:maintenance": "node Makefile.js generateRelease -- maintenance",
+    "release:generate:rc": "node Makefile.js generatePrerelease -- rc",
+    "release:publish": "node Makefile.js publishRelease",
+    "test": "node Makefile.js test",
+    "test:cli": "mocha",
+    "test:fuzz": "node Makefile.js fuzz",
+    "test:performance": "node Makefile.js perf"
+  },
+  "gitHooks": {
+    "pre-commit": "lint-staged"
+  },
+  "lint-staged": {
+    "*.js": "eslint --fix",
+    "*.md": "markdownlint --fix",
+    "lib/rules/*.js": [
+      "node tools/update-eslint-all.js",
+      "git add packages/js/src/configs/eslint-all.js"
+    ],
+    "docs/src/rules/*.md": [
+      "node tools/check-rule-examples.js",
+      "node tools/fetch-docs-links.js",
+      "git add docs/src/_data/further_reading_links.json"
+    ],
+    "docs/**/*.svg": "npx svgo -r --multipass"
+  },
+  "files": [
+    "LICENSE",
+    "README.md",
+    "bin",
+    "conf",
+    "lib",
+    "messages"
+  ],
+  "repository": "eslint/eslint",
+  "funding": "https://opencollective.com/eslint",
+  "homepage": "https://eslint.org",
+  "bugs": "https://github.com/eslint/eslint/issues/",
+  "dependencies": {
+    "@eslint-community/eslint-utils": "^4.2.0",
+    "@eslint-community/regexpp": "^4.6.1",
+    "@eslint/eslintrc": "^2.1.4",
+    "@eslint/js": "8.57.1",
+    "@humanwhocodes/config-array": "^0.13.0",
+    "@humanwhocodes/module-importer": "^1.0.1",
+    "@nodelib/fs.walk": "^1.2.8",
+    "@ungap/structured-clone": "^1.2.0",
+    "ajv": "^6.12.4",
+    "chalk": "^4.0.0",
+    "cross-spawn": "^7.0.2",
+    "debug": "^4.3.2",
+    "doctrine": "^3.0.0",
+    "escape-string-regexp": "^4.0.0",
+    "eslint-scope": "^7.2.2",
+    "eslint-visitor-keys": "^3.4.3",
+    "espree": "^9.6.1",
+    "esquery": "^1.4.2",
+    "esutils": "^2.0.2",
+    "fast-deep-equal": "^3.1.3",
+    "file-entry-cache": "^6.0.1",
+    "find-up": "^5.0.0",
+    "glob-parent": "^6.0.2",
+    "globals": "^13.19.0",
+    "graphemer": "^1.4.0",
+    "ignore": "^5.2.0",
+    "imurmurhash": "^0.1.4",
+    "is-glob": "^4.0.0",
+    "is-path-inside": "^3.0.3",
+    "js-yaml": "^4.1.0",
+    "json-stable-stringify-without-jsonify": "^1.0.1",
+    "levn": "^0.4.1",
+    "lodash.merge": "^4.6.2",
+    "minimatch": "^3.1.2",
+    "natural-compare": "^1.4.0",
+    "optionator": "^0.9.3",
+    "strip-ansi": "^6.0.1",
+    "text-table": "^0.2.0"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.4.3",
+    "@babel/preset-env": "^7.4.3",
+    "@sinonjs/fake-timers": "11.2.2",
+    "@wdio/browser-runner": "^8.14.6",
+    "@wdio/cli": "^8.14.6",
+    "@wdio/concise-reporter": "^8.14.0",
+    "@wdio/globals": "^8.14.6",
+    "@wdio/mocha-framework": "^8.14.0",
+    "babel-loader": "^8.0.5",
+    "c8": "^7.12.0",
+    "chai": "^4.0.1",
+    "cheerio": "^0.22.0",
+    "common-tags": "^1.8.0",
+    "core-js": "^3.1.3",
+    "ejs": "^3.0.2",
+    "eslint": "file:.",
+    "eslint-config-eslint": "file:packages/eslint-config-eslint",
+    "eslint-plugin-eslint-comments": "^3.2.0",
+    "eslint-plugin-eslint-plugin": "^5.2.1",
+    "eslint-plugin-internal-rules": "file:tools/internal-rules",
+    "eslint-plugin-jsdoc": "^46.2.5",
+    "eslint-plugin-n": "^16.6.0",
+    "eslint-plugin-unicorn": "^49.0.0",
+    "eslint-release": "^3.3.0",
+    "eslump": "^3.0.0",
+    "esprima": "^4.0.1",
+    "fast-glob": "^3.2.11",
+    "fs-teardown": "^0.1.3",
+    "glob": "^7.1.6",
+    "got": "^11.8.3",
+    "gray-matter": "^4.0.3",
+    "lint-staged": "^11.0.0",
+    "load-perf": "^0.2.0",
+    "markdown-it": "^12.2.0",
+    "markdown-it-container": "^3.0.0",
+    "markdownlint": "^0.32.0",
+    "markdownlint-cli": "^0.37.0",
+    "marked": "^4.0.8",
+    "memfs": "^3.0.1",
+    "metascraper": "^5.25.7",
+    "metascraper-description": "^5.25.7",
+    "metascraper-image": "^5.29.3",
+    "metascraper-logo": "^5.25.7",
+    "metascraper-logo-favicon": "^5.25.7",
+    "metascraper-title": "^5.25.7",
+    "mocha": "^8.3.2",
+    "mocha-junit-reporter": "^2.0.0",
+    "node-polyfill-webpack-plugin": "^1.0.3",
+    "npm-license": "^0.3.3",
+    "pirates": "^4.0.5",
+    "progress": "^2.0.3",
+    "proxyquire": "^2.0.1",
+    "recast": "^0.23.0",
+    "regenerator-runtime": "^0.14.0",
+    "rollup-plugin-node-polyfills": "^0.2.1",
+    "semver": "^7.5.3",
+    "shelljs": "^0.8.2",
+    "sinon": "^11.0.0",
+    "vite-plugin-commonjs": "0.10.1",
+    "webdriverio": "^8.14.6",
+    "webpack": "^5.23.0",
+    "webpack-cli": "^4.5.0",
+    "yorkie": "^2.0.0"
+  },
+  "keywords": [
+    "ast",
+    "lint",
+    "javascript",
+    "ecmascript",
+    "espree"
+  ],
+  "license": "MIT",
+  "engines": {
+    "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+  }
+}