Flatten
提出詳細
type Flatten<T extends [...any]> = T extends [infer First, ...infer Rest] ? First extends any[] ? [...Flatten<First>, ...Flatten<[...Rest]>] : [First, ...Flatten<[...Rest]>] : T
| 提出日時 | 2023-09-11 04:03:09 |
|---|---|
| 問題 | Flatten |
| ユーザー | snaka |
| ステータス | Accepted |
import type { Equal, Expect } from '@type-challenges/utils' type cases = [ Expect<Equal<Flatten<[]>, []>>, Expect<Equal<Flatten<[1, 2, 3, 4]>, [1, 2, 3, 4]>>, Expect<Equal<Flatten<[1, [2]]>, [1, 2]>>, Expect<Equal<Flatten<[1, 2, [3, 4], [[[5]]]]>, [1, 2, 3, 4, 5]>>, Expect<Equal<Flatten<[{ foo: 'bar'; 2: 10 }, 'foobar']>, [{ foo: 'bar'; 2: 10 }, 'foobar']>>, ]