init

马宇豪

2024-07-16 f591c27b57e2418c9495bc02ae8cfff84d35bc18

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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
 */
 
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(
            "CommonJsChunkLoadingPlugin",
            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("CommonJsChunkLoadingPlugin", handler);
                compilation.hooks.runtimeRequirementInTree
                    .for(RuntimeGlobals.hmrDownloadUpdateHandlers)
                    .tap("CommonJsChunkLoadingPlugin", handler);
                compilation.hooks.runtimeRequirementInTree
                    .for(RuntimeGlobals.hmrDownloadManifest)
                    .tap("CommonJsChunkLoadingPlugin", handler);
                compilation.hooks.runtimeRequirementInTree
                    .for(RuntimeGlobals.baseURI)
                    .tap("CommonJsChunkLoadingPlugin", handler);
                compilation.hooks.runtimeRequirementInTree
                    .for(RuntimeGlobals.externalInstallChunk)
                    .tap("CommonJsChunkLoadingPlugin", handler);
                compilation.hooks.runtimeRequirementInTree
                    .for(RuntimeGlobals.onChunksLoaded)
                    .tap("CommonJsChunkLoadingPlugin", handler);
 
                compilation.hooks.runtimeRequirementInTree
                    .for(RuntimeGlobals.ensureChunkHandlers)
                    .tap("CommonJsChunkLoadingPlugin", (chunk, set) => {
                        if (!isEnabledForChunk(chunk)) return;
                        set.add(RuntimeGlobals.getChunkScriptFilename);
                    });
                compilation.hooks.runtimeRequirementInTree
                    .for(RuntimeGlobals.hmrDownloadUpdateHandlers)
                    .tap("CommonJsChunkLoadingPlugin", (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("CommonJsChunkLoadingPlugin", (chunk, set) => {
                        if (!isEnabledForChunk(chunk)) return;
                        set.add(RuntimeGlobals.getUpdateManifestFilename);
                    });
            }
        );
    }
}
 
module.exports = CommonJsChunkLoadingPlugin;