docs: function repeat$2(count) {
      if (count === void 0) { count = -1; }
      if (count === 0) {
          return new EmptyObservable_1.EmptyObservable();
      }
      else if (count < 0) {
          return this.lift(new RepeatOperator(-1, this));
      }
      else {
          return this.lift(new RepeatOperator(count - 1, this));
      }
  }