Method setTimeout

packages/core/src/SimulatedClock.ts:29–38

(fn: (...args: any[]) => void, timeout: number)

    return this._id++;
  }
  public setTimeout(fn: (...args: any[]) => void, timeout: number) {
    this._flushingInvalidated = this._flushing;
    const id = this.getId();
    this.timeouts.set(id, {
      start: this.now(),
      timeout,
      fn
    });
    return id;
  }
  public clearTimeout(id: number) {
    this._flushingInvalidated = this._flushing;
    this.timeouts.delete(id);