index.html

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8" />
</head>
<body aurelia-app>

	<script src="jspm_packages/system.js"></script>
	<script src="config.js"></script>
	<script>
		// Loads WeakMap polyfill needed by MutationObservers
    System.import('core-js').then(function() {
      // Imports MutationObserver polyfill
      return System.import('polymer/mutationobservers');
    }).then(function() {
      // Ensures start of Aurelia when all required IE9 dependencies are loaded
      System.import('aurelia-bootstrapper');
    });
	</script>

</body>
</html>