let doActions = async (actions) => {
    let ret = null;
    try {
      for(let action of actions) {

        ret = await new Promise((resolve, reject) => {
          let result = action(ret);
          if(typeof result == void 0 || result == false) reject();
          resolve(result);
        });
      }
    } catch(e) {
      console.log(e);
    }
    return ret;
  }

其中的action可能会返回一个promise，当这个promise reject的时候，如何获取到这个状态？