mirror of https://github.com/webpack/webpack.git
				
				
				
			
		
			
				
	
	
		
			78 lines
		
	
	
		
			1.9 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
			
		
		
	
	
			78 lines
		
	
	
		
			1.9 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
/*
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	MIT License http://www.opensource.org/licenses/mit-license.php
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	Author Florent Cailhol @ooflorent
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*/
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"use strict";
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const { compareChunksNatural } = require("../util/comparators");
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const {
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	getFullChunkName,
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	getUsedChunkIds,
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	assignDeterministicIds
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} = require("./IdHelpers");
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/** @typedef {import("../Compiler")} Compiler */
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/** @typedef {import("../Module")} Module */
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/**
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 * @typedef {object} DeterministicChunkIdsPluginOptions
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 * @property {string=} context context for ids
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 * @property {number=} maxLength maximum length of ids
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 */
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class DeterministicChunkIdsPlugin {
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	/**
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	 * @param {DeterministicChunkIdsPluginOptions=} options options
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	 */
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	constructor(options = {}) {
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		this.options = options;
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	}
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	/**
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	 * Apply the plugin
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	 * @param {Compiler} compiler the compiler instance
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	 * @returns {void}
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	 */
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	apply(compiler) {
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		compiler.hooks.compilation.tap(
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			"DeterministicChunkIdsPlugin",
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			compilation => {
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				compilation.hooks.chunkIds.tap(
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					"DeterministicChunkIdsPlugin",
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					chunks => {
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						const chunkGraph = compilation.chunkGraph;
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						const context = this.options.context
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							? this.options.context
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							: compiler.context;
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						const maxLength = this.options.maxLength || 3;
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						const compareNatural = compareChunksNatural(chunkGraph);
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						const usedIds = getUsedChunkIds(compilation);
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						assignDeterministicIds(
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							Array.from(chunks).filter(chunk => chunk.id === null),
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							chunk =>
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								getFullChunkName(chunk, chunkGraph, context, compiler.root),
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							compareNatural,
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							(chunk, id) => {
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								const size = usedIds.size;
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								usedIds.add(`${id}`);
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								if (size === usedIds.size) return false;
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								chunk.id = id;
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								chunk.ids = [id];
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								return true;
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							},
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							[10 ** maxLength],
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							10,
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							usedIds.size
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						);
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					}
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				);
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			}
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		);
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	}
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}
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module.exports = DeterministicChunkIdsPlugin;
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