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提出詳細

type Chunk<
  T extends readonly unknown[],
  N extends number,
  C extends readonly unknown[]=[]> =
  T extends []
  ? C extends []
    ? [] : [C]
  : C["length"] extends N
    ? [C, ...Chunk<T,N>]
    : T extends [infer T1, ...infer T2]
      ? Chunk<T2,N,[...C, T1]>
      : never
提出日時2023-09-18 07:08:45
問題Chunk
ユーザーsankantsu
ステータスAccepted
テストケース
import type { Equal, Expect } from '@type-challenges/utils'

type cases = [
  Expect<Equal<Chunk<[], 1>, []>>,
  Expect<Equal<Chunk<[1, 2, 3], 1>, [[1], [2], [3]]>>,
  Expect<Equal<Chunk<[1, 2, 3], 2>, [[1, 2], [3]]>>,
  Expect<Equal<Chunk<[1, 2, 3, 4], 2>, [[1, 2], [3, 4]]>>,
  Expect<Equal<Chunk<[1, 2, 3, 4], 5>, [[1, 2, 3, 4]]>>,
  Expect<Equal<Chunk<[1, true, 2, false], 2>, [[1, true], [2, false]]>>,
]