20. Promise All

<题目描述>

::: playground#ts 20. Promise All

@file index.ts

// ============= Test Cases =============
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)])
const promiseAllTest4 = PromiseAll<Array<number | Promise<number>>>([1, 2, 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]>>>,
  Expect<Equal<typeof promiseAllTest4, Promise<number[]>>>,
]

// ============= Your Code Here =============
declare function PromiseAll(values): any

:::

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declare function PromiseAll<T extends any[]>(values: readonly [...T]): Promise<{
  [K in keyof T]: Awaited<T[K]>
}>