103 lines
3.1 KiB
JavaScript
103 lines
3.1 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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class OccurrenceOrderPlugin {
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constructor(preferEntry) {
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if(preferEntry !== undefined && typeof preferEntry !== "boolean") {
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throw new Error("Argument should be a boolean.\nFor more info on this plugin, see https://webpack.js.org/plugins/");
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}
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this.preferEntry = preferEntry;
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}
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apply(compiler) {
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const preferEntry = this.preferEntry;
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compiler.plugin("compilation", (compilation) => {
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compilation.plugin("optimize-module-order", (modules) => {
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const occursInInitialChunksMap = new Map();
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const occursInAllChunksMap = new Map();
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const initialChunkChunkMap = new Map();
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const entryCountMap = new Map();
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modules.forEach(m => {
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let initial = 0;
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let entry = 0;
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m.forEachChunk(c => {
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if(c.isInitial()) initial++;
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if(c.entryModule === m) entry++;
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});
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initialChunkChunkMap.set(m, initial);
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entryCountMap.set(m, entry);
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});
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const countOccursInEntry = (sum, r) => {
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if(!r.module) return sum;
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return sum + initialChunkChunkMap.get(r.module);
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};
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const countOccurs = (sum, r) => {
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if(!r.module) return sum;
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return sum + r.module.getNumberOfChunks();
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};
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if(preferEntry) {
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modules.forEach(m => {
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const result = m.reasons.reduce(countOccursInEntry, 0) + initialChunkChunkMap.get(m) + entryCountMap.get(m);
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occursInInitialChunksMap.set(m, result);
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});
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}
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modules.forEach(m => {
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const result = m.reasons.reduce(countOccurs, 0) + m.getNumberOfChunks() + entryCountMap.get(m);
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occursInAllChunksMap.set(m, result);
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});
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modules.sort((a, b) => {
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if(preferEntry) {
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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 = occursInAllChunksMap.get(a);
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const bOccurs = occursInAllChunksMap.get(b);
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if(aOccurs > bOccurs) return -1;
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if(aOccurs < bOccurs) return 1;
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if(a.index > b.index) return 1;
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if(a.index < b.index) return -1;
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return 0;
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});
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});
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compilation.plugin("optimize-chunk-order", (chunks) => {
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const occursInInitialChunksMap = new Map();
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chunks.forEach(c => {
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const result = c.parents.reduce((sum, p) => {
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if(p.isInitial()) return sum + 1;
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return sum;
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}, 0);
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return occursInInitialChunksMap.set(c, result);
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});
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function occurs(c) {
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return c.blocks.length;
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}
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chunks.sort((a, b) => {
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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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const aOccurs = occurs(a);
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const bOccurs = occurs(b);
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if(aOccurs > bOccurs) return -1;
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if(aOccurs < bOccurs) return 1;
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return a.compareTo(b);
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});
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});
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});
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}
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}
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module.exports = OccurrenceOrderPlugin;
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