repeat-3.ts

import { repeat, filter, take, timer } from 'rxjs';

@Injectable({ providedIn: 'root' })
export class FooService {
  private http = inject(HttpClient);

  doSometing(data) {
    return this.http.post('https://foo', data)
      .pipe(
        // 👇👇👇
        repeat({ delay: (count) => timer(count * 1000) }),
        filter((res) => res.status === 'completed'),
        take(1)
      )
  }
}