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Union to Intersection

提出詳細

type U2I<U> = (U extends unknown ? (arg: U) => void : never) extends (arg: infer I) => void ? I : never;
提出日時2025-01-20 10:40:47
問題Union to Intersection
ユーザーookkoouu
ステータスWrong Answer
テストケース
import type { Equal, Expect } from '@type-challenges/utils'

type cases = [
  Expect<Equal<UnionToIntersection<'foo' | 42 | true>, 'foo' & 42 & true>>,
  Expect<Equal<UnionToIntersection<(() => 'foo') | ((i: 42) => true)>, (() => 'foo') & ((i: 42) => true)>>,
]