1 files changed, 91 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/ids/ChunkModuleIdRangePlugin.js b/node_modules/webpack/lib/ids/ChunkModuleIdRangePlugin.js
new file mode 100644
index 00000000..982ca1b1
--- /dev/null
+++ b/node_modules/webpack/lib/ids/ChunkModuleIdRangePlugin.js
@@ -0,0 +1,91 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const { find } = require("../util/SetHelpers");
+const {
+	compareModulesByPreOrderIndexOrIdentifier,
+	compareModulesByPostOrderIndexOrIdentifier
+} = require("../util/comparators");
+
+/** @typedef {import("../Compiler")} Compiler */
+
+/**
+ * @typedef {Object} ChunkModuleIdRangePluginOptions
+ * @property {string} name the chunk name
+ * @property {("index" | "index2" | "preOrderIndex" | "postOrderIndex")=} order order
+ * @property {number=} start start id
+ * @property {number=} end end id
+ */
+
+class ChunkModuleIdRangePlugin {
+	/**
+	 * @param {ChunkModuleIdRangePluginOptions} options options object
+	 */
+	constructor(options) {
+		this.options = options;
+	}
+
+	/**
+	 * Apply the plugin
+	 * @param {Compiler} compiler the compiler instance
+	 * @returns {void}
+	 */
+	apply(compiler) {
+		const options = this.options;
+		compiler.hooks.compilation.tap("ChunkModuleIdRangePlugin", compilation => {
+			const moduleGraph = compilation.moduleGraph;
+			compilation.hooks.moduleIds.tap("ChunkModuleIdRangePlugin", modules => {
+				const chunkGraph = compilation.chunkGraph;
+				const chunk = find(
+					compilation.chunks,
+					chunk => chunk.name === options.name
+				);
+				if (!chunk) {
+					throw new Error(
+						`ChunkModuleIdRangePlugin: Chunk with name '${options.name}"' was not found`
+					);
+				}
+
+				let chunkModules;
+				if (options.order) {
+					let cmpFn;
+					switch (options.order) {
+						case "index":
+						case "preOrderIndex":
+							cmpFn = compareModulesByPreOrderIndexOrIdentifier(moduleGraph);
+							break;
+						case "index2":
+						case "postOrderIndex":
+							cmpFn = compareModulesByPostOrderIndexOrIdentifier(moduleGraph);
+							break;
+						default:
+							throw new Error(
+								"ChunkModuleIdRangePlugin: unexpected value of order"
+							);
+					}
+					chunkModules = chunkGraph.getOrderedChunkModules(chunk, cmpFn);
+				} else {
+					chunkModules = Array.from(modules)
+						.filter(m => {
+							return chunkGraph.isModuleInChunk(m, chunk);
+						})
+						.sort(compareModulesByPreOrderIndexOrIdentifier(moduleGraph));
+				}
+
+				let currentId = options.start || 0;
+				for (let i = 0; i < chunkModules.length; i++) {
+					const m = chunkModules[i];
+					if (m.needId && chunkGraph.getModuleId(m) === null) {
+						chunkGraph.setModuleId(m, currentId++);
+					}
+					if (options.end && currentId > options.end) break;
+				}
+			});
+		});
+	}
+}
+module.exports = ChunkModuleIdRangePlugin;