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Construct Tuple

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type ConstructTuple<L extends number, A extends readonly unknown[] = []> =
  A["length"] extends L ? A : ConstructTuple<L, [...A, unknown]>
提出日時2025-09-15 12:40:23
問題Construct Tuple
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<ConstructTuple<0>, []>>,
  Expect<Equal<ConstructTuple<2>, [unknown, unknown]>>,
  Expect<Equal<ConstructTuple<999>['length'], 999>>,
  // @ts-expect-error
  Expect<Equal<ConstructTuple<1000>['length'], 1000>>,
]