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@xwlee
Created June 7, 2023 04:36
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forEachAsync.ts
const forEachAsync = <T>(arr: T[], fn: (x: T) => any): Promise<any> =>
arr.reduce(
(promise: Promise<void>, value: T) => promise.then(() => fn(value)),
Promise.resolve()
);
(async () => {
console.log("START FOREACH VIA REDUCE");
await forEachAsync([1, 2, 3, 4], async (n) => {
const x = await fakeAPI(n * 1000, n);
useResult(x);
});
console.log("END FOREACH VIA REDUCE");
})();
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