啊鑫
7 天以前 fca192d3c38c5dcfbb6ace8bc71d6078f6a079b2
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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 ChunkPrefetchFunctionRuntimeModule = require("./ChunkPrefetchFunctionRuntimeModule");
const ChunkPrefetchStartupRuntimeModule = require("./ChunkPrefetchStartupRuntimeModule");
const ChunkPrefetchTriggerRuntimeModule = require("./ChunkPrefetchTriggerRuntimeModule");
const ChunkPreloadTriggerRuntimeModule = require("./ChunkPreloadTriggerRuntimeModule");
 
/** @typedef {import("../Chunk")} Chunk */
/** @typedef {import("../ChunkGroup").RawChunkGroupOptions} RawChunkGroupOptions */
/** @typedef {import("../Compiler")} Compiler */
 
const PLUGIN_NAME = "ChunkPrefetchPreloadPlugin";
 
class ChunkPrefetchPreloadPlugin {
    /**
     * @param {Compiler} compiler the compiler
     * @returns {void}
     */
    apply(compiler) {
        compiler.hooks.compilation.tap(PLUGIN_NAME, compilation => {
            compilation.hooks.additionalChunkRuntimeRequirements.tap(
                PLUGIN_NAME,
                (chunk, set, { chunkGraph }) => {
                    if (chunkGraph.getNumberOfEntryModules(chunk) === 0) return;
                    const startupChildChunks = chunk.getChildrenOfTypeInOrder(
                        chunkGraph,
                        "prefetchOrder"
                    );
                    if (startupChildChunks) {
                        set.add(RuntimeGlobals.prefetchChunk);
                        set.add(RuntimeGlobals.onChunksLoaded);
                        set.add(RuntimeGlobals.exports);
                        compilation.addRuntimeModule(
                            chunk,
                            new ChunkPrefetchStartupRuntimeModule(startupChildChunks)
                        );
                    }
                }
            );
            compilation.hooks.additionalTreeRuntimeRequirements.tap(
                PLUGIN_NAME,
                (chunk, set, { chunkGraph }) => {
                    const chunkMap = chunk.getChildIdsByOrdersMap(chunkGraph);
 
                    if (chunkMap.prefetch) {
                        set.add(RuntimeGlobals.prefetchChunk);
                        compilation.addRuntimeModule(
                            chunk,
                            new ChunkPrefetchTriggerRuntimeModule(chunkMap.prefetch)
                        );
                    }
                    if (chunkMap.preload) {
                        set.add(RuntimeGlobals.preloadChunk);
                        compilation.addRuntimeModule(
                            chunk,
                            new ChunkPreloadTriggerRuntimeModule(chunkMap.preload)
                        );
                    }
                }
            );
            compilation.hooks.runtimeRequirementInTree
                .for(RuntimeGlobals.prefetchChunk)
                .tap(PLUGIN_NAME, (chunk, set) => {
                    compilation.addRuntimeModule(
                        chunk,
                        new ChunkPrefetchFunctionRuntimeModule(
                            "prefetch",
                            RuntimeGlobals.prefetchChunk,
                            RuntimeGlobals.prefetchChunkHandlers
                        )
                    );
                    set.add(RuntimeGlobals.prefetchChunkHandlers);
                });
            compilation.hooks.runtimeRequirementInTree
                .for(RuntimeGlobals.preloadChunk)
                .tap(PLUGIN_NAME, (chunk, set) => {
                    compilation.addRuntimeModule(
                        chunk,
                        new ChunkPrefetchFunctionRuntimeModule(
                            "preload",
                            RuntimeGlobals.preloadChunk,
                            RuntimeGlobals.preloadChunkHandlers
                        )
                    );
                    set.add(RuntimeGlobals.preloadChunkHandlers);
                });
        });
    }
}
 
module.exports = ChunkPrefetchPreloadPlugin;