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Last of Array

提出詳細

type Last<T extends any[]> = T extends [infer L, ...infer R]
  ? R["length"] extends 0
  ? L
  : Last<[...R]>
  : never
提出日時2023-08-07 17:17:19
問題Last of Array
ユーザーookkoouu
ステータスAccepted
テストケース
import type { Equal, Expect } from '@type-challenges/utils'

type cases = [
  Expect<Equal<Last<[3, 2, 1]>, 1>>,
  Expect<Equal<Last<[() => 123, { a: string }]>, { a: string }>>,
]