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1 files changed, 79 insertions, 0 deletions

diff --git a/node_modules/webpack/lib/optimize/LimitChunkCountPlugin.js b/node_modules/webpack/lib/optimize/LimitChunkCountPlugin.js
new file mode 100644
index 00000000..0f8bd6dc
--- /dev/null
+++ b/node_modules/webpack/lib/optimize/LimitChunkCountPlugin.js
@@ -0,0 +1,79 @@
+/*
+	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/LimitChunkCountPlugin.json");
+
+/** @typedef {import("../../declarations/plugins/optimize/LimitChunkCountPlugin").LimitChunkCountPluginOptions} LimitChunkCountPluginOptions */
+
+class LimitChunkCountPlugin {
+	/**
+	 * @param {LimitChunkCountPluginOptions=} options options object
+	 */
+	constructor(options) {
+		if (!options) options = {};
+
+		validateOptions(schema, options, "Limit Chunk Count Plugin");
+		this.options = options;
+	}
+	apply(compiler) {
+		const options = this.options;
+		compiler.hooks.compilation.tap("LimitChunkCountPlugin", compilation => {
+			compilation.hooks.optimizeChunksAdvanced.tap(
+				"LimitChunkCountPlugin",
+				chunks => {
+					const maxChunks = options.maxChunks;
+					if (!maxChunks) return;
+					if (maxChunks < 1) return;
+					if (chunks.length <= maxChunks) return;
+
+					const orderedChunks = chunks.slice().sort((a, b) => a.compareTo(b));
+
+					const sortedExtendedPairCombinations = orderedChunks
+						.reduce((combinations, a, idx) => {
+							// create combination pairs
+							for (let i = 0; i < idx; i++) {
+								const b = orderedChunks[i];
+								combinations.push([b, a]);
+							}
+							return combinations;
+						}, [])
+						.map(pair => {
+							// extend combination pairs with size and integrated size
+							const a = pair[0].size(options);
+							const b = pair[1].size(options);
+							const ab = pair[0].integratedSize(pair[1], options);
+							return [a + b - ab, ab, pair[0], pair[1], a, b];
+						})
+						.filter(extendedPair => {
+							// filter pairs that do not have an integratedSize
+							// meaning they can NOT be integrated!
+							return extendedPair[1] !== false;
+						})
+						.sort((a, b) => {
+							// sadly javascript does an inplace sort here
+							// sort them by size
+							const diff1 = b[0] - a[0];
+							if (diff1 !== 0) return diff1;
+							const diff2 = a[1] - b[1];
+							if (diff2 !== 0) return diff2;
+							const diff3 = a[2].compareTo(b[2]);
+							if (diff3 !== 0) return diff3;
+							return a[3].compareTo(b[3]);
+						});
+
+					const pair = sortedExtendedPairCombinations[0];
+
+					if (pair && pair[2].integrate(pair[3], "limit")) {
+						chunks.splice(chunks.indexOf(pair[3]), 1);
+						return true;
+					}
+				}
+			);
+		});
+	}
+}
+module.exports = LimitChunkCountPlugin;