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Last of Array

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type Last<T extends readonly unknown[]> = T extends [...infer Rest, infer Last] ? Last : never
提出日時2025-09-14 15:30:47
問題Last of Array
ユーザーbalckowl
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 }>>,
]