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<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>bufferCount</title>
  <script src="https://npmcdn.com/@reactivex/rxjs@5.0.0-beta.3/dist/global/Rx.umd.js"></script>
</head>
<body>
</body>
</html>
 
const myPromise = val =>
  new Promise(resolve =>
    setTimeout(() => resolve(`Promise Resolved: ${val}`), 5000)
  );
/*
  when all observables complete, give the last
  emitted value from each as an array
*/
const example = Rx.Observable.forkJoin(
  //emit 'Hello' immediately
  Rx.Observable.of('Hello'),
  //emit 'World' after 1 second
  Rx.Observable.of('World').delay(1000),
  //emit 0 after 1 second
  Rx.Observable.interval(1000).take(1),
  //emit 0...1 in 1 second interval
  Rx.Observable.interval(1000).take(2),
  //promise that resolves to 'Promise Resolved' after 5 seconds
  myPromise('RESULT')
);
//output: ["Hello", "World", 0, 1, "Promise Resolved: RESULT"]
const subscribe = example.subscribe(val => console.log(val));
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