wamr-102.ts

import { Observable } from 'rxjs';
import { retryWhen, take } from 'rxjs/operators';

observable
  .pipe(
    retryWhen(errors => errors.pipe(take(2)))
  )
  .subscribe({
    next: x => console.log(`${x} received`),
    complete: () => console.log('Completed'),
    error: err => console.warn(err)
  });