source: frontend/node_modules/webpack/lib/ids/NamedModuleIdsPlugin.js

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

"use strict";

const { compareModulesByIdentifier } = require("../util/comparators");
const {
        assignAscendingModuleIds,
        assignNames,
        getLongModuleName,
        getShortModuleName,
        getUsedModuleIdsAndModules
} = require("./IdHelpers");

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

/**
 * Defines the named module ids plugin options type used by this module.
 * @typedef {object} NamedModuleIdsPluginOptions
 * @property {string=} context context
 */

const PLUGIN_NAME = "NamedModuleIdsPlugin";

class NamedModuleIdsPlugin {
        /**
         * Creates an instance of NamedModuleIdsPlugin.
         * @param {NamedModuleIdsPluginOptions=} options options
         */
        constructor(options = {}) {
                /** @type {NamedModuleIdsPluginOptions} */
                this.options = options;
        }

        /**
         * Applies the plugin by registering its hooks on the compiler.
         * @param {Compiler} compiler the compiler instance
         * @returns {void}
         */
        apply(compiler) {
                const { root } = compiler;
                compiler.hooks.compilation.tap(PLUGIN_NAME, (compilation) => {
                        const hashFunction = compilation.outputOptions.hashFunction;
                        compilation.hooks.moduleIds.tap(PLUGIN_NAME, () => {
                                const chunkGraph = compilation.chunkGraph;
                                const context = this.options.context
                                        ? this.options.context
                                        : compiler.context;

                                const [usedIds, modules] = getUsedModuleIdsAndModules(compilation);
                                const unnamedModules = assignNames(
                                        modules,
                                        (m) => getShortModuleName(m, context, root),
                                        (m, shortName) =>
                                                getLongModuleName(shortName, m, context, hashFunction, root),
                                        compareModulesByIdentifier,
                                        usedIds,
                                        (m, name) => chunkGraph.setModuleId(m, name)
                                );
                                if (unnamedModules.length > 0) {
                                        assignAscendingModuleIds(usedIds, unnamedModules, compilation);
                                }
                        });
                });
        }
}

module.exports = NamedModuleIdsPlugin;