<html>
<head>
<title>Angular 2 QuickStart</title>
<!-- 1. Load libraries -->
<script src="node_modules/angular2/bundles/angular2-polyfills.js"></script>
<script src="node_modules/rxjs/bundles/Rx.umd.js"></script>
<script src="node_modules/angular2/bundles/angular2-all.umd.js"></script>
<!-- 2. Load our 'modules' -->
<script src='app/app.component.js'></script>
<script src='app/boot.js'></script>
<!--upgrade-->
<script src="node_modules/angular2/upgrade.js"></script>
</head>
<!-- 3. Display the application -->
<body>
<my-app>Loading...</my-app>
</body>
</html>
without <script src="node_modules/angular2/upgrade.js"></script> code works fine. when i include upgrade.js.it shows " Uncaught ReferenceError: require is not defined in angular2" .How can i overcome from this error.