optimize for compression

Author: sokra

lib/JsonpMainTemplate.js

@@ -41,6 +41,8 @@ JsonpMainTemplate.prototype.render = function(hash, chunk, moduleTemplate, depen
 	}
 	addLine(0, "(function webpackBootstrap(modules) {");
 	addLine(1, "var installedModules = {};");
+	if(chunk.chunks.length > 0)
+		addLine(1, "var installedChunks = {0:0};");
 	addRequireFunc(1);
 	addLine(1, "require.e = function requireEnsure(chunkId, callback) {");
 	if(chunk.chunks.length == 0) {
@@ -63,18 +65,17 @@ JsonpMainTemplate.prototype.render = function(hash, chunk, moduleTemplate, depen
 	addLine(1, "require.modules = modules;");
 	addLine(1, "require.cache = installedModules;");
 	if(chunk.chunks.length > 0) {
-		addLine(1, "var installedChunks = {0:0};");
 		addLine(1, "window[" + JSON.stringify(jsonpFunction) + "] = function webpackJsonpCallback(chunkIds, moreModules) {");
-		addLine(2, "for(var moduleId in moreModules)");
-		addLine(3, "modules[moduleId] = moreModules[moduleId];");
-		addLine(2, "var callbacks = [];");
-		addLine(2, "for(var i = 0; i < chunkIds.length; i++) {");
-		addLine(3, "var installedChunk = installedChunks[chunkIds[i]];");
-		addLine(3, "if(installedChunk) callbacks.push.apply(callbacks, installedChunk);");
-		addLine(3, "installedChunks[chunkIds[i]] = 0;");
+		addLine(2, "var moduleId, chunkId, callbacks = [];");
+		addLine(2, "while(chunkIds.length) {");
+		addLine(3, "chunkId = chunkIds.shift();");
+		addLine(3, "if(installedChunks[chunkId]) callbacks.push.apply(callbacks, installedChunks[chunkId]);");
+		addLine(3, "installedChunks[chunkId] = 0;");
 		addLine(2, "}");
-		addLine(2, "for(var i = 0; i < callbacks.length; i++)");
-		addLine(3, "callbacks[i].call(null, require);");
+		addLine(2, "for(moduleId in moreModules)");
+		addLine(3, "modules[moduleId] = moreModules[moduleId];");
+		addLine(2, "while(callbacks.length)");
+		addLine(3, "callbacks.shift().call(null, require);");
 		addLine(1, "};");
 	}
 	addLine(1, "return require(0);");