source: imaps-frontend/node_modules/webpack/lib/LoaderOptionsPlugin.js

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
        Author Tobias Koppers @sokra
*/

"use strict";

const ModuleFilenameHelpers = require("./ModuleFilenameHelpers");
const NormalModule = require("./NormalModule");
const createSchemaValidation = require("./util/create-schema-validation");

/** @typedef {import("../declarations/plugins/LoaderOptionsPlugin").LoaderOptionsPluginOptions} LoaderOptionsPluginOptions */
/** @typedef {import("./Compiler")} Compiler */
/** @typedef {import("./ModuleFilenameHelpers").MatchObject} MatchObject  */

const validate = createSchemaValidation(
        require("../schemas/plugins/LoaderOptionsPlugin.check.js"),
        () => require("../schemas/plugins/LoaderOptionsPlugin.json"),
        {
                name: "Loader Options Plugin",
                baseDataPath: "options"
        }
);

class LoaderOptionsPlugin {
        /**
         * @param {LoaderOptionsPluginOptions & MatchObject} options options object
         */
        constructor(options = {}) {
                validate(options);
                // If no options are set then generate empty options object
                if (typeof options !== "object") options = {};
                if (!options.test) {
                        // This is mocking a RegExp object which always returns true
                        // TODO: Figure out how to do `as unknown as RegExp` for this line
                        // in JSDoc equivalent
                        /** @type {any} */
                        const defaultTrueMockRegExp = {
                                test: () => true
                        };

                        /** @type {RegExp} */
                        options.test = defaultTrueMockRegExp;
                }
                this.options = options;
        }

        /**
         * Apply the plugin
         * @param {Compiler} compiler the compiler instance
         * @returns {void}
         */
        apply(compiler) {
                const options = this.options;
                compiler.hooks.compilation.tap("LoaderOptionsPlugin", compilation => {
                        NormalModule.getCompilationHooks(compilation).loader.tap(
                                "LoaderOptionsPlugin",
                                (context, module) => {
                                        const resource = module.resource;
                                        if (!resource) return;
                                        const i = resource.indexOf("?");
                                        if (
                                                ModuleFilenameHelpers.matchObject(
                                                        options,
                                                        i < 0 ? resource : resource.slice(0, i)
                                                )
                                        ) {
                                                for (const key of Object.keys(options)) {
                                                        if (key === "include" || key === "exclude" || key === "test") {
                                                                continue;
                                                        }

                                                        /** @type {any} */
                                                        (context)[key] = options[key];
                                                }
                                        }
                                }
                        );
                });
        }
}

module.exports = LoaderOptionsPlugin;