How do we convert:
Rx.Observable.timer(3000).mapTo({ id: 1 })
to RxJS 6?
For example if we:
import { Observable, timer } from 'rxjs';
We still get:
[ts] Property 'timer' does not exist on type 'typeof Observable'.
All in all I'm trying to get this example (From this tutorial) to work:
// Simulate HTTP requests
const getPostOne$ = Rx.Observable.timer(3000).mapTo({id: 1});
const getPostTwo$ = Rx.Observable.timer(1000).mapTo({id: 2});
Rx.Observable.concat(getPostOne$, getPostTwo$).subscribe(res => console.log(res));
Using the new way to do pipeable operators we no long user the .
to chain observables but we use the pipe and pass in our operators separated by commas. Example in your scenario we would do
import { timer, concat } from 'rxjs'
import { mapTo } from 'rxjs/operators'
getPostOne$ = timer(3000).pipe(mapTo({ id: 1 }));
getPostTwo$ = timer(1000).pipe(mapTo({ id: 2 }));
concat(getPostOne$, getPostTwo$).subscribe(res => console.log(res));
You can read more about pipeable operators Here
Hope this helps!
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