初始化

cnf

2025-05-10 386fa0eca75ddc88165f9b73038f2a2239e1072e

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/*
    MIT License http://www.opensource.org/licenses/mit-license.php
    Author Tobias Koppers @sokra
*/
 
"use strict";
 
const RuntimeGlobals = require("../RuntimeGlobals");
const StartupChunkDependenciesPlugin = require("../runtime/StartupChunkDependenciesPlugin");
 
/** @typedef {import("../Chunk")} Chunk */
/** @typedef {import("../Compiler")} Compiler */
 
/**
 * @typedef {object} CommonJsChunkLoadingPluginOptions
 * @property {boolean=} asyncChunkLoading enable async chunk loading
 */
 
const PLUGIN_NAME = "CommonJsChunkLoadingPlugin";
 
class CommonJsChunkLoadingPlugin {
    /**
     * @param {CommonJsChunkLoadingPluginOptions=} options options
     */
    constructor(options = {}) {
        this._asyncChunkLoading = options.asyncChunkLoading;
    }
 
    /**
     * Apply the plugin
     * @param {Compiler} compiler the compiler instance
     * @returns {void}
     */
    apply(compiler) {
        const ChunkLoadingRuntimeModule = this._asyncChunkLoading
            ? require("./ReadFileChunkLoadingRuntimeModule")
            : require("./RequireChunkLoadingRuntimeModule");
        const chunkLoadingValue = this._asyncChunkLoading
            ? "async-node"
            : "require";
        new StartupChunkDependenciesPlugin({
            chunkLoading: chunkLoadingValue,
            asyncChunkLoading: this._asyncChunkLoading
        }).apply(compiler);
        compiler.hooks.thisCompilation.tap(PLUGIN_NAME, compilation => {
            const globalChunkLoading = compilation.outputOptions.chunkLoading;
            /**
             * @param {Chunk} chunk chunk
             * @returns {boolean} true, if wasm loading is enabled for the chunk
             */
            const isEnabledForChunk = chunk => {
                const options = chunk.getEntryOptions();
                const chunkLoading =
                    options && options.chunkLoading !== undefined
                        ? options.chunkLoading
                        : globalChunkLoading;
                return chunkLoading === chunkLoadingValue;
            };
            const onceForChunkSet = new WeakSet();
            /**
             * @param {Chunk} chunk chunk
             * @param {Set<string>} set runtime requirements
             */
            const handler = (chunk, set) => {
                if (onceForChunkSet.has(chunk)) return;
                onceForChunkSet.add(chunk);
                if (!isEnabledForChunk(chunk)) return;
                set.add(RuntimeGlobals.moduleFactoriesAddOnly);
                set.add(RuntimeGlobals.hasOwnProperty);
                compilation.addRuntimeModule(chunk, new ChunkLoadingRuntimeModule(set));
            };
 
            compilation.hooks.runtimeRequirementInTree
                .for(RuntimeGlobals.ensureChunkHandlers)
                .tap(PLUGIN_NAME, handler);
            compilation.hooks.runtimeRequirementInTree
                .for(RuntimeGlobals.hmrDownloadUpdateHandlers)
                .tap(PLUGIN_NAME, handler);
            compilation.hooks.runtimeRequirementInTree
                .for(RuntimeGlobals.hmrDownloadManifest)
                .tap(PLUGIN_NAME, handler);
            compilation.hooks.runtimeRequirementInTree
                .for(RuntimeGlobals.baseURI)
                .tap(PLUGIN_NAME, handler);
            compilation.hooks.runtimeRequirementInTree
                .for(RuntimeGlobals.externalInstallChunk)
                .tap(PLUGIN_NAME, handler);
            compilation.hooks.runtimeRequirementInTree
                .for(RuntimeGlobals.onChunksLoaded)
                .tap(PLUGIN_NAME, handler);
 
            compilation.hooks.runtimeRequirementInTree
                .for(RuntimeGlobals.ensureChunkHandlers)
                .tap(PLUGIN_NAME, (chunk, set) => {
                    if (!isEnabledForChunk(chunk)) return;
                    set.add(RuntimeGlobals.getChunkScriptFilename);
                });
            compilation.hooks.runtimeRequirementInTree
                .for(RuntimeGlobals.hmrDownloadUpdateHandlers)
                .tap(PLUGIN_NAME, (chunk, set) => {
                    if (!isEnabledForChunk(chunk)) return;
                    set.add(RuntimeGlobals.getChunkUpdateScriptFilename);
                    set.add(RuntimeGlobals.moduleCache);
                    set.add(RuntimeGlobals.hmrModuleData);
                    set.add(RuntimeGlobals.moduleFactoriesAddOnly);
                });
            compilation.hooks.runtimeRequirementInTree
                .for(RuntimeGlobals.hmrDownloadManifest)
                .tap(PLUGIN_NAME, (chunk, set) => {
                    if (!isEnabledForChunk(chunk)) return;
                    set.add(RuntimeGlobals.getUpdateManifestFilename);
                });
        });
    }
}
 
module.exports = CommonJsChunkLoadingPlugin;