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// Promise allSettled
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Promise._allSettled = function (taskArr) {
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  return new Promise((resolve, reject) => {
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    const result = []; // 结果数组
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    let count = 0;  // 计数，当count等于taskArr的长度的时候，说明都处理完这些promise了
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    taskArr.forEach((task, index) => {
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      if (!(task instanceof Promise)) task = Promise.resolve(task);
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      task.then((value) => {
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        result[index] = {
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          status: 'fullfilled',
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          value
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        }
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        count++;
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        if (count === taskArr.length) {
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          resolve(result)
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        }
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      }, (reason) => {
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        result[index] = {
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          status: 'rejected',
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          reason
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        }
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        count++;
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        if (count === taskArr.length) {
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          resolve(result)
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        }
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      })
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    })
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  })
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}
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Promise._allSettled([
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  () => '我不是一个promise',
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  Promise.resolve(12121),
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  new Promise((resolve) => {
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    setTimeout(() => {
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      resolve('motherfucker')
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    }, 4000);
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  }),
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  new Promise((resolve, reject) => {
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    setTimeout(() => {
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      reject('hello')
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    }, 3000);
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  })
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]).then((data) => {
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  console.log(data);
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})