AggregateError: Promise.any 中没有 Promise 被解决

当传递给 Promise.any() 的所有 Promise 都被拒绝时，就会发生 JavaScript 异常“No Promise in Promise.any was resolved”。这是 AggregateError 的唯一内置用法。

消息

AggregateError: All promises were rejected (V8-based)
AggregateError: No Promise in Promise.any was resolved (Firefox)
AggregateError (Safari)

错误类型

AggregateError

哪里出错了？

Promise.any() 仅在传递给它的所有 Promise 都被拒绝时才会被拒绝。您应该访问 errors 以获取拒绝原因的数组。有关如何处理异步拒绝的 Promise 的更多信息，请参阅 使用 Promise。当 Promise.any() 接收一个空的可迭代对象时，也会引发此错误。

示例

空可迭代对象

js
Promise.any([]).catch((error) => {
  console.error(error); // AggregateError: No Promise in Promise.any was resolved
});

处理所有拒绝

js
const promises = [
  fetch("/data-location1"),
  fetch("/data-location1"),
  fetch("/data-location1"),
];

Promise.any(promises)
  .then((value) => console.log(value))
  .catch((error) => {
    // None of the fetches were successful
    for (const e of error.errors) {
      console.error(e);
    }
  });

// Using await
async function fetchFirstSuccessful() {
  try {
    const value = await Promise.any(promises);
    console.log(value);
  } catch (error) {
    for (const e of error.errors) {
      console.error(e);
    }
  }
}

另请参阅