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Promise.all

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declare function PromiseAll<T extends readonly unknown[]>(values: readonly [...T]):
  Promise<{[K in keyof T]: Awaited<T[K]>}>
提出日時2025-09-16 15:13:29
問題Promise.all
ユーザーbalckowl
ステータスWrong Answer
テストケース
import type { Equal, Expect } from '@type-challenges/utils'

const promiseAllTest1 = PromiseAll([1, 2, 3] as const)
const promiseAllTest2 = PromiseAll([1, 2, Promise.resolve(3)] as const)
const promiseAllTest3 = PromiseAll([1, 2, Promise.resolve(3)])

type cases = [
  Expect<Equal<typeof promiseAllTest1, Promise<[1, 2, 3]>>>,
  Expect<Equal<typeof promiseAllTest2, Promise<[1, 2, number]>>>,
  Expect<Equal<typeof promiseAllTest3, Promise<[number, number, number]>>>,
]