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xwlee/mapAsync.ts

Created June 7, 2023 04:35
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mapAsync.ts
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mapAsync.ts
const mapAsync = <T, R>(arr: T[], fn: (x: T) => Promise<R>) =>
Promise.all(arr.map(fn));
(async () => {
console.log("START MAP");
const mapped = await mapAsync([1, 2, 3, 4], async (n) => {
const x = await fakeAPI(n * 1000, n);
return x * 10;
});
useResult(mapped);
console.log("END MAP");
})();
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