DeterministicChunkIdsPlugin.js
9045e4d5dbe1master

DeterministicChunkIdsPlugin.js
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			/*
			MIT License http://www.opensource.org/licenses/mit-license.php
			Author Florent Cailhol @ooflorent
			*/

			"use strict";

			const { compareChunksNatural } = require("../util/comparators");
			const {
			getFullChunkName,
			getUsedChunkIds,
			assignDeterministicIds
			} = require("./IdHelpers");

			/** @typedef {import("../Compiler")} Compiler */
			/** @typedef {import("../Module")} Module */

			class DeterministicChunkIdsPlugin {
			constructor(options) {
			this.options = options \|\| {};
			}

			/**
			* Apply the plugin
			* @param {Compiler} compiler the compiler instance
			* @returns {void}
			*/
			apply(compiler) {
			compiler.hooks.compilation.tap(
			"DeterministicChunkIdsPlugin",
			compilation => {
			compilation.hooks.chunkIds.tap(
			"DeterministicChunkIdsPlugin",
			chunks => {
			const chunkGraph = compilation.chunkGraph;
			const context = this.options.context
			? this.options.context
			: compiler.context;
			const maxLength = this.options.maxLength \|\| 3;

			const compareNatural = compareChunksNatural(chunkGraph);

			const usedIds = getUsedChunkIds(compilation);
			assignDeterministicIds(
			Array.from(chunks).filter(chunk => {
			return chunk.id === null;
			}),
			chunk =>
			getFullChunkName(chunk, chunkGraph, context, compiler.root),
			compareNatural,
			(chunk, id) => {
			const size = usedIds.size;
			usedIds.add(`${id}`);
			if (size === usedIds.size) return false;
			chunk.id = id;
			chunk.ids = [id];
			return true;
			},
			[Math.pow(10, maxLength)],
			10,
			usedIds.size
			);
			}
			);
			}
			);
			}
			}

			module.exports = DeterministicChunkIdsPlugin;