настройка webpack

node_modules/webpack/lib/optimize/OccurrenceChunkOrderPlugin.js

@@ -0,0 +1,66 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const validateOptions = require("schema-utils");
+const schema = require("../../schemas/plugins/optimize/OccurrenceOrderChunkIdsPlugin.json");
+
+/** @typedef {import("../../declarations/plugins/optimize/OccurrenceOrderChunkIdsPlugin").OccurrenceOrderChunkIdsPluginOptions} OccurrenceOrderChunkIdsPluginOptions */
+
+class OccurrenceOrderChunkIdsPlugin {
+	/**
+	 * @param {OccurrenceOrderChunkIdsPluginOptions=} options options object
+	 */
+	constructor(options = {}) {
+		validateOptions(schema, options, "Occurrence Order Chunk Ids Plugin");
+		this.options = options;
+	}
+
+	apply(compiler) {
+		const prioritiseInitial = this.options.prioritiseInitial;
+		compiler.hooks.compilation.tap(
+			"OccurrenceOrderChunkIdsPlugin",
+			compilation => {
+				compilation.hooks.optimizeChunkOrder.tap(
+					"OccurrenceOrderChunkIdsPlugin",
+					chunks => {
+						const occursInInitialChunksMap = new Map();
+						const originalOrder = new Map();
+
+						let i = 0;
+						for (const c of chunks) {
+							let occurs = 0;
+							for (const chunkGroup of c.groupsIterable) {
+								for (const parent of chunkGroup.parentsIterable) {
+									if (parent.isInitial()) occurs++;
+								}
+							}
+							occursInInitialChunksMap.set(c, occurs);
+							originalOrder.set(c, i++);
+						}
+
+						chunks.sort((a, b) => {
+							if (prioritiseInitial) {
+								const aEntryOccurs = occursInInitialChunksMap.get(a);
+								const bEntryOccurs = occursInInitialChunksMap.get(b);
+								if (aEntryOccurs > bEntryOccurs) return -1;
+								if (aEntryOccurs < bEntryOccurs) return 1;
+							}
+							const aOccurs = a.getNumberOfGroups();
+							const bOccurs = b.getNumberOfGroups();
+							if (aOccurs > bOccurs) return -1;
+							if (aOccurs < bOccurs) return 1;
+							const orgA = originalOrder.get(a);
+							const orgB = originalOrder.get(b);
+							return orgA - orgB;
+						});
+					}
+				);
+			}
+		);
+	}
+}
+
+module.exports = OccurrenceOrderChunkIdsPlugin;