How do I make an Observable Interval start immediately without a delay?

Question

I want my observable to fire immediately, and again every second. interval will not fire immediately. I found this question which suggested using startWith, whi

Answer 1

RxJs 6

interval(100).pipe(startWith(0)).subscribe(() => { //your code }); 

or with timer:

import {timer} from 'rxjs/observable/timer';
timer(0, 100).subscribe(() => {

    });