webpack/lib/optimize/ChunkModuleIdRangePlugin.js

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
"use strict";
class ChunkModuleIdRangePlugin {
	constructor(options) {
		this.options = options;
	}
	apply(compiler) {
		const options = this.options;
		compiler.hooks.compilation.tap("ChunkModuleIdRangePlugin", compilation => {
			compilation.hooks.moduleIds.tap("ChunkModuleIdRangePlugin", modules => {
				const chunk = this.chunks.find(chunk => chunk.name === options.name);
				if (!chunk)
					throw new Error(
						"ChunkModuleIdRangePlugin: Chunk with name '" +
							options.name +
							"' was not found"
					);
				let currentId = options.start;
				let chunkModules;
				if (options.order) {
					chunkModules = chunk.modules.slice();
					switch (options.order) {
						case "index":
							chunkModules.sort((a, b) => {
								return a.index - b.index;
							});
							break;
						case "index2":
							chunkModules.sort((a, b) => {
								return a.index2 - b.index2;
							});
							break;
						default:
							throw new Error(
								"ChunkModuleIdRangePlugin: unexpected value of order"
							);
					}
				} else {
					chunkModules = modules.filter(m => {
						return m.chunks.includes(chunk);
					});
				}

				for (let i = 0; i < chunkModules.length; i++) {
					const m = chunkModules[i];
					if (m.id === null) {
						m.id = currentId++;
					}
					if (options.end && currentId > options.end) break;
				}
			});
		});
	}
}
module.exports = ChunkModuleIdRangePlugin;