7. Promise.reject

[Sunny]

 /**
   * 得到一个被拒绝的Promise
   * @param {*} reason
   */
  Promise.reject=function(reason) {
    return new MyPromise((resolve, reject) => {
      reject(reason);
    });
  }

[cscty]

Promise.reject = function (data) {
return new Promise((resolve, reject) => {
reject(data);
});
};