mirror of https://github.com/webpack/webpack.git
76 lines
2.3 KiB
JavaScript
76 lines
2.3 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const { validate } = require("schema-utils");
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const schema = require("../../schemas/plugins/ids/OccurrenceChunkIdsPlugin.json");
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const { compareChunksNatural } = require("../util/comparators");
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const { assignAscendingChunkIds } = require("./IdHelpers");
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/** @typedef {import("../../declarations/plugins/ids/OccurrenceChunkIdsPlugin").OccurrenceChunkIdsPluginOptions} OccurrenceChunkIdsPluginOptions */
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/** @typedef {import("../Chunk")} Chunk */
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/** @typedef {import("../Compiler")} Compiler */
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/** @typedef {import("../Module")} Module */
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class OccurrenceChunkIdsPlugin {
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/**
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* @param {OccurrenceChunkIdsPluginOptions=} options options object
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*/
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constructor(options = {}) {
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validate(schema, options, {
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name: "Occurrence Order Chunk Ids Plugin",
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baseDataPath: "options"
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});
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this.options = options;
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}
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/**
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* Apply the plugin
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* @param {Compiler} compiler the compiler instance
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* @returns {void}
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*/
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apply(compiler) {
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const prioritiseInitial = this.options.prioritiseInitial;
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compiler.hooks.compilation.tap("OccurrenceChunkIdsPlugin", compilation => {
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compilation.hooks.chunkIds.tap("OccurrenceChunkIdsPlugin", chunks => {
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const chunkGraph = compilation.chunkGraph;
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/** @type {Map<Chunk, number>} */
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const occursInInitialChunksMap = new Map();
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const compareNatural = compareChunksNatural(chunkGraph);
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for (const c of chunks) {
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let occurs = 0;
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for (const chunkGroup of c.groupsIterable) {
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for (const parent of chunkGroup.parentsIterable) {
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if (parent.isInitial()) occurs++;
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}
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}
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occursInInitialChunksMap.set(c, occurs);
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}
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const chunksInOccurrenceOrder = Array.from(chunks).sort((a, b) => {
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if (prioritiseInitial) {
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const aEntryOccurs = occursInInitialChunksMap.get(a);
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const bEntryOccurs = occursInInitialChunksMap.get(b);
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if (aEntryOccurs > bEntryOccurs) return -1;
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if (aEntryOccurs < bEntryOccurs) return 1;
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}
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const aOccurs = a.getNumberOfGroups();
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const bOccurs = b.getNumberOfGroups();
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if (aOccurs > bOccurs) return -1;
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if (aOccurs < bOccurs) return 1;
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return compareNatural(a, b);
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});
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assignAscendingChunkIds(chunksInOccurrenceOrder, compilation);
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});
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});
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}
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}
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module.exports = OccurrenceChunkIdsPlugin;
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