import { Observable } from 'rxjs';
import { repeat as higherOrder } from 'rxjs/operators';

/**
 * Returns an Observable that repeats the stream of items emitted by the source Observable at most count times.
 *
 * <img src="./img/repeat.png" width="100%">
 *
 * @param {number} [count] The number of times the source Observable items are repeated, a count of 0 will yield
 * an empty Observable.
 * @return {Observable} An Observable that repeats the stream of items emitted by the source Observable at most
 * count times.
 * @method repeat
 * @owner Observable
 */
export function repeat<T>(this: Observable<T>, count: number = -1): Observable<T> {
  return higherOrder(count)(this) as Observable<T>;
}