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node_modules/webpack/lib/NormalModuleReplacementPlugin.js 1.17 KB
aaac7fed   liuqimichale   add
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  /*
  	MIT License http://www.opensource.org/licenses/mit-license.php
  	Author Tobias Koppers @sokra
  */
  "use strict";
  
  const path = require("path");
  
  class NormalModuleReplacementPlugin {
  	constructor(resourceRegExp, newResource) {
  		this.resourceRegExp = resourceRegExp;
  		this.newResource = newResource;
  	}
  
  	apply(compiler) {
  		const resourceRegExp = this.resourceRegExp;
  		const newResource = this.newResource;
  		compiler.plugin("normal-module-factory", (nmf) => {
  			nmf.plugin("before-resolve", (result, callback) => {
  				if(!result) return callback();
  				if(resourceRegExp.test(result.request)) {
  					if(typeof newResource === "function") {
  						newResource(result);
  					} else {
  						result.request = newResource;
  					}
  				}
  				return callback(null, result);
  			});
  			nmf.plugin("after-resolve", (result, callback) => {
  				if(!result) return callback();
  				if(resourceRegExp.test(result.resource)) {
  					if(typeof newResource === "function") {
  						newResource(result);
  					} else {
  						result.resource = path.resolve(path.dirname(result.resource), newResource);
  					}
  				}
  				return callback(null, result);
  			});
  		});
  	}
  }
  
  module.exports = NormalModuleReplacementPlugin;