source: frontend/node_modules/webpack/lib/javascript/EnableChunkLoadingPlugin.js

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

"use strict";

/** @typedef {import("../../declarations/WebpackOptions").ChunkLoadingType} ChunkLoadingType */
/** @typedef {import("../Compiler")} Compiler */

/** @typedef {Set<ChunkLoadingType>} ChunkLoadingTypes */

/** @type {WeakMap<Compiler, ChunkLoadingTypes>} */
const enabledTypes = new WeakMap();

/**
 * Returns enabled types.
 * @param {Compiler} compiler compiler
 * @returns {ChunkLoadingTypes} enabled types
 */
const getEnabledTypes = (compiler) => {
        let set = enabledTypes.get(compiler);
        if (set === undefined) {
                /** @type {ChunkLoadingTypes} */
                set = new Set();
                enabledTypes.set(compiler, set);
        }
        return set;
};

class EnableChunkLoadingPlugin {
        /**
         * Creates an instance of EnableChunkLoadingPlugin.
         * @param {ChunkLoadingType} type library type that should be available
         */
        constructor(type) {
                this.type = type;
        }

        /**
         * Updates enabled using the provided compiler.
         * @param {Compiler} compiler the compiler instance
         * @param {ChunkLoadingType} type type of library
         * @returns {void}
         */
        static setEnabled(compiler, type) {
                getEnabledTypes(compiler).add(type);
        }

        /**
         * Checks enabled.
         * @param {Compiler} compiler the compiler instance
         * @param {ChunkLoadingType} type type of library
         * @returns {void}
         */
        static checkEnabled(compiler, type) {
                if (!getEnabledTypes(compiler).has(type)) {
                        throw new Error(
                                `Chunk loading type "${type}" is not enabled. ` +
                                        "EnableChunkLoadingPlugin need to be used to enable this type of chunk loading. " +
                                        'This usually happens through the "output.enabledChunkLoadingTypes" option. ' +
                                        'If you are using a function as entry which sets "chunkLoading", you need to add all potential chunk loading types to "output.enabledChunkLoadingTypes". ' +
                                        `These types are enabled: ${[...getEnabledTypes(compiler)].join(", ")}`
                        );
                }
        }

        /**
         * Applies the plugin by registering its hooks on the compiler.
         * @param {Compiler} compiler the compiler instance
         * @returns {void}
         */
        apply(compiler) {
                const { type } = this;

                // Only enable once
                const enabled = getEnabledTypes(compiler);
                if (enabled.has(type)) return;
                enabled.add(type);

                if (typeof type === "string") {
                        switch (type) {
                                case "jsonp": {
                                        const JsonpChunkLoadingPlugin = require("../web/JsonpChunkLoadingPlugin");

                                        new JsonpChunkLoadingPlugin().apply(compiler);
                                        break;
                                }
                                case "import-scripts": {
                                        const ImportScriptsChunkLoadingPlugin = require("../webworker/ImportScriptsChunkLoadingPlugin");

                                        new ImportScriptsChunkLoadingPlugin().apply(compiler);
                                        break;
                                }
                                case "require": {
                                        // @ts-expect-error https://github.com/microsoft/TypeScript/issues/41697
                                        const CommonJsChunkLoadingPlugin = require("../node/CommonJsChunkLoadingPlugin");

                                        new CommonJsChunkLoadingPlugin({
                                                asyncChunkLoading: false
                                        }).apply(compiler);
                                        break;
                                }
                                case "async-node": {
                                        // @ts-expect-error https://github.com/microsoft/TypeScript/issues/41697
                                        const CommonJsChunkLoadingPlugin = require("../node/CommonJsChunkLoadingPlugin");

                                        new CommonJsChunkLoadingPlugin({
                                                asyncChunkLoading: true
                                        }).apply(compiler);
                                        break;
                                }
                                case "import": {
                                        const ModuleChunkLoadingPlugin = require("../esm/ModuleChunkLoadingPlugin");

                                        new ModuleChunkLoadingPlugin().apply(compiler);
                                        break;
                                }
                                default:
                                        throw new Error(`Unsupported chunk loading type ${type}.
Plugins which provide custom chunk loading types must call EnableChunkLoadingPlugin.setEnabled(compiler, type) to disable this error.`);
                        }
                } else {
                        // TODO support plugin instances here
                        // apply them to the compiler
                }
        }
}

module.exports = EnableChunkLoadingPlugin;