cache the replaced source for performance

sokra · sokra · commit 8a7b508165ee · 2014-02-13T11:41:10.000+01:00
diff --git a/lib/NormalModule.js b/lib/NormalModule.js
@@ -66,6 +66,7 @@ NormalModule.prototype.build = function build(options, compilation, resolver, fs
 		this.dependencies.length = 0;
 		this.variables.length = 0;
 		this.blocks.length = 0;
+		this._cachedSource = null;
 		if(options.module && options.module.noParse) {
 			if(Array.isArray(options.module.noParse)) {
 				if(options.module.noParse.some(function(regExp) {
@@ -96,9 +97,10 @@ NormalModule.prototype.build = function build(options, compilation, resolver, fs
 };
 
 NormalModule.prototype.source = function(dependencyTemplates, outputOptions, requestShortener) {
+	if(this._cachedSource) return this._cachedSource;
 	var _source = this._source;
 	if(!_source) return new RawSource("throw new Error('No source availible');");
-	var source = new ReplaceSource(_source);
+	var source = this._cachedSource = new ReplaceSource(_source);
 	var topLevelBlock = this;
 	function doDep(dep) {
 		var template = dependencyTemplates.get(dep.Class);
