<!DOCTYPE html>
<html>
<head>
<title>Parcel Sandbox</title>
<meta charset="UTF-8" />
</head>
<body>
<div id="app"></div>
<script src="../node_modules/rxjs/bundles/rxjs.umd.min.js"></script>
<script src="./Test.js"></script>
</body>
</html>
const stream = Rx.Observable.create(...);