source: frontend/node_modules/webpack/lib/container/ModuleFederationPlugin.js

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

"use strict";

const { SyncHook } = require("tapable");
const isValidExternalsType = require("../../schemas/plugins/container/ExternalsType.check");
const Compilation = require("../Compilation");
const SharePlugin = require("../sharing/SharePlugin");
const ContainerPlugin = require("./ContainerPlugin");
const ContainerReferencePlugin = require("./ContainerReferencePlugin");
const HoistContainerReferences = require("./HoistContainerReferencesPlugin");

/** @typedef {import("../../declarations/plugins/container/ModuleFederationPlugin").ExternalsType} ExternalsType */
/** @typedef {import("../../declarations/plugins/container/ModuleFederationPlugin").ModuleFederationPluginOptions} ModuleFederationPluginOptions */
/** @typedef {import("../Compiler")} Compiler */
/** @typedef {import("../Dependency")} Dependency */

/**
 * Defines the compilation hooks type used by this module.
 * @typedef {object} CompilationHooks
 * @property {SyncHook<Dependency>} addContainerEntryDependency
 * @property {SyncHook<Dependency>} addFederationRuntimeDependency
 */

/** @type {WeakMap<Compilation, CompilationHooks>} */
const compilationHooksMap = new WeakMap();
const PLUGIN_NAME = "ModuleFederationPlugin";

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

        /**
         * Get the compilation hooks associated with this plugin.
         * @param {Compilation} compilation The compilation instance.
         * @returns {CompilationHooks} The hooks for the compilation.
         */
        static getCompilationHooks(compilation) {
                if (!(compilation instanceof Compilation)) {
                        throw new TypeError(
                                "The 'compilation' argument must be an instance of Compilation"
                        );
                }
                let hooks = compilationHooksMap.get(compilation);
                if (!hooks) {
                        hooks = {
                                addContainerEntryDependency: new SyncHook(["dependency"]),
                                addFederationRuntimeDependency: new SyncHook(["dependency"])
                        };
                        compilationHooksMap.set(compilation, hooks);
                }
                return hooks;
        }

        /**
         * Applies the plugin by registering its hooks on the compiler.
         * @param {Compiler} compiler the compiler instance
         * @returns {void}
         */
        apply(compiler) {
                compiler.hooks.validate.tap(PLUGIN_NAME, () => {
                        compiler.validate(
                                () =>
                                        require("../../schemas/plugins/container/ModuleFederationPlugin.json"),
                                this.options,
                                {
                                        name: "Module Federation Plugin",
                                        baseDataPath: "options"
                                },
                                (options) =>
                                        require("../../schemas/plugins/container/ModuleFederationPlugin.check")(
                                                options
                                        )
                        );
                });
                const { options } = this;
                const library = options.library || { type: "var", name: options.name };
                const remoteType =
                        options.remoteType ||
                        (options.library && isValidExternalsType(options.library.type)
                                ? /** @type {ExternalsType} */ (options.library.type)
                                : "script");
                if (
                        library &&
                        !compiler.options.output.enabledLibraryTypes.includes(library.type)
                ) {
                        compiler.options.output.enabledLibraryTypes.push(library.type);
                }
                compiler.hooks.afterPlugins.tap(PLUGIN_NAME, () => {
                        if (
                                options.exposes &&
                                (Array.isArray(options.exposes)
                                        ? options.exposes.length > 0
                                        : Object.keys(options.exposes).length > 0)
                        ) {
                                new ContainerPlugin({
                                        name: /** @type {string} */ (options.name),
                                        library,
                                        filename: options.filename,
                                        runtime: options.runtime,
                                        shareScope: options.shareScope,
                                        exposes: options.exposes
                                }).apply(compiler);
                        }
                        if (
                                options.remotes &&
                                (Array.isArray(options.remotes)
                                        ? options.remotes.length > 0
                                        : Object.keys(options.remotes).length > 0)
                        ) {
                                new ContainerReferencePlugin({
                                        remoteType,
                                        shareScope: options.shareScope,
                                        remotes: options.remotes
                                }).apply(compiler);
                        }
                        if (options.shared) {
                                new SharePlugin({
                                        shared: options.shared,
                                        shareScope: options.shareScope
                                }).apply(compiler);
                        }
                        new HoistContainerReferences().apply(compiler);
                });
        }
}

module.exports = ModuleFederationPlugin;