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 ExportWebpackRequireRuntimeModule = require("./ExportWebpackRequireRuntimeModule");
const ModuleChunkLoadingRuntimeModule = require("./ModuleChunkLoadingRuntimeModule");
 
/** @typedef {import("../Chunk")} Chunk */
/** @typedef {import("../Compiler")} Compiler */
 
class ModuleChunkLoadingPlugin {
    /**
     * Apply the plugin
     * @param {Compiler} compiler the compiler instance
     * @returns {void}
     */
    apply(compiler) {
        compiler.hooks.thisCompilation.tap(
            "ModuleChunkLoadingPlugin",
            compilation => {
                const globalChunkLoading = compilation.outputOptions.chunkLoading;
                /**
                 * @param {Chunk} chunk chunk to check
                 * @returns {boolean} true, when the plugin is enabled for the chunk
                 */
                const isEnabledForChunk = chunk => {
                    const options = chunk.getEntryOptions();
                    const chunkLoading =
                        options && options.chunkLoading !== undefined
                            ? options.chunkLoading
                            : globalChunkLoading;
                    return chunkLoading === "import";
                };
                const onceForChunkSet = new WeakSet();
                /**
                 * @param {Chunk} chunk chunk to check
                 * @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 ModuleChunkLoadingRuntimeModule(set)
                    );
                };
                compilation.hooks.runtimeRequirementInTree
                    .for(RuntimeGlobals.ensureChunkHandlers)
                    .tap("ModuleChunkLoadingPlugin", handler);
                compilation.hooks.runtimeRequirementInTree
                    .for(RuntimeGlobals.baseURI)
                    .tap("ModuleChunkLoadingPlugin", handler);
                compilation.hooks.runtimeRequirementInTree
                    .for(RuntimeGlobals.externalInstallChunk)
                    .tap("ModuleChunkLoadingPlugin", handler);
                compilation.hooks.runtimeRequirementInTree
                    .for(RuntimeGlobals.onChunksLoaded)
                    .tap("ModuleChunkLoadingPlugin", handler);
                compilation.hooks.runtimeRequirementInTree
                    .for(RuntimeGlobals.externalInstallChunk)
                    .tap("ModuleChunkLoadingPlugin", (chunk, set) => {
                        if (!isEnabledForChunk(chunk)) return;
                        compilation.addRuntimeModule(
                            chunk,
                            new ExportWebpackRequireRuntimeModule()
                        );
                    });
 
                compilation.hooks.runtimeRequirementInTree
                    .for(RuntimeGlobals.ensureChunkHandlers)
                    .tap("ModuleChunkLoadingPlugin", (chunk, set) => {
                        if (!isEnabledForChunk(chunk)) return;
                        set.add(RuntimeGlobals.getChunkScriptFilename);
                    });
            }
        );
    }
}
 
module.exports = ModuleChunkLoadingPlugin;