concatAll - 2

RxJS 5 concatAll

by Brian Troncone

HTML

<script src="https://npmcdn.com/@reactivex/[email protected]/dist/global/Rx.umd.js"></script>

JavaScript

//create and resolve basic promise
const samplePromise = val => new Promise(resolve => resolve(val));
//emit a value every 2 seconds
const source = Rx.Observable.interval(2000);

const example = source
  .map(val => samplePromise(val))
  //merge values from resolved promise
  .concatAll();
//output: 'Example with Promise 0', 'Example with Promise 1'...
const subscribe = example.subscribe(val => console.log('Example with Promise:', val));