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 ChunkPrefetchFunctionRuntimeModule = require("./ChunkPrefetchFunctionRuntimeModule");
const ChunkPrefetchStartupRuntimeModule = require("./ChunkPrefetchStartupRuntimeModule");
const ChunkPrefetchTriggerRuntimeModule = require("./ChunkPrefetchTriggerRuntimeModule");
const ChunkPreloadTriggerRuntimeModule = require("./ChunkPreloadTriggerRuntimeModule");
 
/** @typedef {import("../Compiler")} Compiler */
 
class ChunkPrefetchPreloadPlugin {
    /**
     * @param {Compiler} compiler the compiler
     * @returns {void}
     */
    apply(compiler) {
        compiler.hooks.compilation.tap(
            "ChunkPrefetchPreloadPlugin",
            compilation => {
                compilation.hooks.additionalChunkRuntimeRequirements.tap(
                    "ChunkPrefetchPreloadPlugin",
                    (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);
                            compilation.addRuntimeModule(
                                chunk,
                                new ChunkPrefetchStartupRuntimeModule(startupChildChunks)
                            );
                        }
                    }
                );
                compilation.hooks.additionalTreeRuntimeRequirements.tap(
                    "ChunkPrefetchPreloadPlugin",
                    (chunk, set, { chunkGraph }) => {
                        const chunkMap = chunk.getChildIdsByOrdersMap(chunkGraph, false);
 
                        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("ChunkPrefetchPreloadPlugin", (chunk, set) => {
                        compilation.addRuntimeModule(
                            chunk,
                            new ChunkPrefetchFunctionRuntimeModule(
                                "prefetch",
                                RuntimeGlobals.prefetchChunk,
                                RuntimeGlobals.prefetchChunkHandlers
                            )
                        );
                        set.add(RuntimeGlobals.prefetchChunkHandlers);
                    });
                compilation.hooks.runtimeRequirementInTree
                    .for(RuntimeGlobals.preloadChunk)
                    .tap("ChunkPrefetchPreloadPlugin", (chunk, set) => {
                        compilation.addRuntimeModule(
                            chunk,
                            new ChunkPrefetchFunctionRuntimeModule(
                                "preload",
                                RuntimeGlobals.preloadChunk,
                                RuntimeGlobals.preloadChunkHandlers
                            )
                        );
                        set.add(RuntimeGlobals.preloadChunkHandlers);
                    });
            }
        );
    }
}
 
module.exports = ChunkPrefetchPreloadPlugin;