mirror of https://github.com/webpack/webpack.git
				
				
				
			
		
			
				
	
	
		
			93 lines
		
	
	
		
			2.9 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
			
		
		
	
	
			93 lines
		
	
	
		
			2.9 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
/*
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	MIT License http://www.opensource.org/licenses/mit-license.php
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	Author Tobias Koppers @sokra
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*/
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"use strict";
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const { ConcatSource, RawSource } = require("webpack-sources");
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const ModuleFilenameHelpers = require("./ModuleFilenameHelpers");
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const JavascriptModulesPlugin = require("./javascript/JavascriptModulesPlugin");
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/** @typedef {import("webpack-sources").Source} Source */
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/** @typedef {import("./Compiler")} Compiler */
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/** @type {WeakMap<Source, Source>} */
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const cache = new WeakMap();
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const devtoolWarning = new RawSource(`/*
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 * ATTENTION: The "eval" devtool has been used (maybe by default in mode: "development").
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 * This devtool is not neither made for production nor for readable output files.
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 * It uses "eval()" calls to create a separate source file in the browser devtools.
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 * If you are trying to read the output file, select a different devtool (https://webpack.js.org/configuration/devtool/)
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 * or disable the default devtool with "devtool: false".
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 * If you are looking for production-ready output files, see mode: "production" (https://webpack.js.org/configuration/mode/).
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 */
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`);
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class EvalDevToolModulePlugin {
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	constructor(options) {
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		this.namespace = options.namespace || "";
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		this.sourceUrlComment = options.sourceUrlComment || "\n//# sourceURL=[url]";
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		this.moduleFilenameTemplate =
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			options.moduleFilenameTemplate ||
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			"webpack://[namespace]/[resourcePath]?[loaders]";
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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("EvalDevToolModulePlugin", compilation => {
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			const hooks = JavascriptModulesPlugin.getCompilationHooks(compilation);
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			hooks.renderModuleContent.tap(
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				"EvalDevToolModulePlugin",
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				(source, module, { runtimeTemplate, chunkGraph }) => {
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					const cacheEntry = cache.get(source);
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					if (cacheEntry !== undefined) return cacheEntry;
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					const content = source.source();
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					const str = ModuleFilenameHelpers.createFilename(
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						module,
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						{
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							moduleFilenameTemplate: this.moduleFilenameTemplate,
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							namespace: this.namespace
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						},
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						{
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							requestShortener: runtimeTemplate.requestShortener,
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							chunkGraph
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						}
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					);
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					const footer =
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						"\n" +
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						this.sourceUrlComment.replace(
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							/\[url\]/g,
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							encodeURI(str)
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								.replace(/%2F/g, "/")
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								.replace(/%20/g, "_")
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								.replace(/%5E/g, "^")
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								.replace(/%5C/g, "\\")
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								.replace(/^\//, "")
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						);
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					const result = new RawSource(
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						`eval(${JSON.stringify(content + footer)});`
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					);
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					cache.set(source, result);
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					return result;
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				}
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			);
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			hooks.render.tap(
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				"EvalDevToolModulePlugin",
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				source => new ConcatSource(devtoolWarning, source)
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			);
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			hooks.chunkHash.tap("EvalDevToolModulePlugin", (chunk, hash) => {
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				hash.update("EvalDevToolModulePlugin");
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				hash.update("2");
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			});
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		});
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	}
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}
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module.exports = EvalDevToolModulePlugin;
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