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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>Buffer</title>
  <script src="https://npmcdn.com/@reactivex/rxjs@5.0.0-beta.3/dist/global/Rx.umd.js"></script>
</head>
<body></body>
</html>
 
//emit value every 1 second
const oneSecondInterval = Rx.Observable.interval(1000);
//return an observable that emits value every 5 seconds
const fiveSecondInterval = () => Rx.Observable.interval(5000);
//every five seconds, emit buffered values
const bufferWhenExample = oneSecondInterval.bufferWhen(fiveSecondInterval);
//log values
//ex. output: [0,1,2,3]...[4,5,6,7,8]
const subscribe = bufferWhenExample.subscribe(val => console.log('Emitted Buffer: ', val));
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