Promise.allSettled

Promise.allSettled() takes an array of promises as input and returns an array with the result of all the promises whether they are rejected or resolved.

if (!Promise.myAllSettled) {
  Promise.myAllSettled = function (promises) {
    return Promise.all(
      promises.map((promise) =>
        Promise.resolve(promise)
          .then((value) => ({ status: "fulfilled", value }))
          .catch((reason) => ({ status: "rejected", reason }))
      )
    );
  };
}

// Example usage:
const promises = [
  Promise.resolve(42),
  Promise.reject("error"),
  new Promise((resolve) => setTimeout(resolve, 1000, "hello")),
];

Promise.myAllSettled(promises).then((results) => console.log(results));
// Output:
// [
// { status: 'fulfilled', value: 42 },
// { status: 'rejected', reason: 'error' },
// { status: 'fulfilled', value: 'hello' }
// ]