Reverse

约 111 字小于 1 分钟

2026-02-11

题目

实现类型版本的数组反转 Array.reverse

例如：

type a = Reverse<['a', 'b']> // ['b', 'a']
type b = Reverse<['a', 'b', 'c']> // ['c', 'b', 'a']

解题思路

待补充

答案

type Reverse<T> = any

验证

import type { Equal, Expect } from '@type-challenges/utils'

type cases = [
  Expect<Equal<Reverse<[]>, []>>,
  Expect<Equal<Reverse<['a', 'b']>, ['b', 'a']>>,
  Expect<Equal<Reverse<['a', 'b', 'c']>, ['c', 'b', 'a']>>,
]

type errors = [
  // @ts-expect-error
  Reverse<'string'>,
  // @ts-expect-error
  Reverse<{ key: 'value' }>,
]

参考

无