Index: frontend/node_modules/rollup-plugin-terser/README.md
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+# rollup-plugin-terser [![Travis Build Status][travis-img]][travis]
+
+[travis-img]: https://travis-ci.org/TrySound/rollup-plugin-terser.svg
+[travis]: https://travis-ci.org/TrySound/rollup-plugin-terser
+
+[Rollup](https://github.com/rollup/rollup) plugin to minify generated es bundle. Uses [terser](https://github.com/fabiosantoscode/terser) under the hood.
+
+## Install
+
+```sh
+yarn add rollup-plugin-terser --dev
+# Or with npm:
+npm i rollup-plugin-terser --save-dev
+```
+
+_Note: this package requires rollup@0.66 and higher (including rollup@2.0.0)_
+
+## Usage
+
+```js
+import { rollup } from "rollup";
+import { terser } from "rollup-plugin-terser";
+
+rollup({
+  input: "main.js",
+  plugins: [terser()],
+});
+```
+
+## Why named export?
+
+1. Module is a namespace. Default export often leads to function/component per file dogma and makes code less maintainable.
+2. Interop with commonjs is broken in many cases or hard to maintain.
+3. Show me any good language with default exports. It's historical javascriptism.
+
+## Options
+
+> ⚠️ **Caveat:** any function used in options object cannot rely on its surrounding scope, since it is executed in an isolated context.
+
+```js
+terser(options);
+```
+
+`options` - [terser API options](https://github.com/fabiosantoscode/terser#minify-options)
+
+Note: some terser options are set by the plugin automatically:
+
+- `module: true` is set when `format` is `esm` or `es`
+- `toplevel: true` is set when `format` is `cjs`
+
+`options.numWorkers: number`
+
+Amount of workers to spawn. Defaults to the number of CPUs minus 1.
+
+## Examples
+
+### Using as output plugin
+
+```js
+// rollup.config.js
+import { terser } from "rollup-plugin-terser";
+
+export default {
+  input: "index.js",
+  output: [
+    { file: "lib.js", format: "cjs" },
+    { file: "lib.min.js", format: "cjs", plugins: [terser()] },
+    { file: "lib.esm.js", format: "esm" },
+  ],
+};
+```
+
+### Comments
+
+If you'd like to preserve comments (for licensing for example), then you can specify a function to do this like so:
+
+```js
+terser({
+  output: {
+    comments: function (node, comment) {
+      var text = comment.value;
+      var type = comment.type;
+      if (type == "comment2") {
+        // multiline comment
+        return /@preserve|@license|@cc_on/i.test(text);
+      }
+    },
+  },
+});
+```
+
+Alternatively, you can also choose to keep all comments (e.g. if a licensing header has already been prepended by a previous rollup plugin):
+
+```js
+terser({
+  output: {
+    comments: "all",
+  },
+});
+```
+
+See [Terser documentation](https://github.com/fabiosantoscode/terser#terser) for further reference.
+
+# License
+
+MIT © [Bogdan Chadkin](mailto:trysound@yandex.ru)