/**
   * 等待所有的Promise有结果后
   * 该方法返回的Promise完成
   * 并且按照顺序将所有结果汇总
   * @param {Iterable} proms
   */
  Promise.allSettled=function(proms) {
    const ps = [];
    for (const p of proms) {
      ps.push(
        MyPromise.resolve(p).then(
          (value) => ({
            status: FULFILLED,
            value,
          }),
          (reason) => ({
            status: REJECTED,
            reason,
          })
        )
      );
    }
    return MyPromise.all(ps);
  }