mirror of https://github.com/webpack/webpack.git
92 lines
2.3 KiB
JavaScript
92 lines
2.3 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const { ModuleExternalInitFragment } = require("./ExternalModule");
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const ExternalModuleFactoryPlugin = require("./ExternalModuleFactoryPlugin");
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const ConcatenatedModule = require("./optimize/ConcatenatedModule");
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/** @typedef {import("../declarations/WebpackOptions").Externals} Externals */
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/** @typedef {import("./Compiler")} Compiler */
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/** @typedef {import("./ExternalModule").Imported} Imported */
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const PLUGIN_NAME = "ExternalsPlugin";
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class ExternalsPlugin {
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/**
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* @param {string} type default external type
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* @param {Externals} externals externals config
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*/
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constructor(type, externals) {
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this.type = type;
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this.externals = externals;
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}
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/**
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* Apply the plugin
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* @param {Compiler} compiler the compiler instance
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* @returns {void}
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*/
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apply(compiler) {
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compiler.hooks.compile.tap(PLUGIN_NAME, ({ normalModuleFactory }) => {
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new ExternalModuleFactoryPlugin(this.type, this.externals).apply(
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normalModuleFactory
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);
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});
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compiler.hooks.compilation.tap(PLUGIN_NAME, (compilation) => {
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const { concatenatedModuleInfo } =
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ConcatenatedModule.getCompilationHooks(compilation);
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concatenatedModuleInfo.tap(PLUGIN_NAME, (updatedInfo, moduleInfo) => {
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const rawExportMap = updatedInfo.rawExportMap;
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if (!rawExportMap) {
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return;
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}
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const chunkInitFragments = moduleInfo.chunkInitFragments;
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const moduleExternalInitFragments =
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/** @type {ModuleExternalInitFragment[]} */
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(
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chunkInitFragments
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? /** @type {unknown[]} */
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(chunkInitFragments).filter(
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(fragment) => fragment instanceof ModuleExternalInitFragment
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)
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: []
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);
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let initFragmentChanged = false;
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for (const fragment of moduleExternalInitFragments) {
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const imported = fragment.getImported();
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if (Array.isArray(imported)) {
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const newImported =
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/** @type {Imported} */
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(
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imported.map(([specifier, finalName]) => [
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specifier,
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rawExportMap.has(specifier)
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? rawExportMap.get(specifier)
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: finalName
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])
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);
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fragment.setImported(newImported);
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initFragmentChanged = true;
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}
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}
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if (initFragmentChanged) {
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return true;
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}
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});
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});
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}
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}
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module.exports = ExternalsPlugin;
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