type-challenges-judge

Type Challenges Judge

Problems

Progress

ObjectEntries

提出詳細

type ObjectEntries<T, T2 = Required<T>> = { [P in keyof T2]: [P, [T2[P]] extends [never] ? undefined : T2[P]] }[keyof T2]

提出日時	2024-09-11 11:11:09
問題	ObjectEntries
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'

interface Model {
  name: string
  age: number
  locations: string[] | null
}

type ModelEntries = ['name', string] | ['age', number] | ['locations', string[] | null]

type cases = [
  Expect<Equal<ObjectEntries<Model>, ModelEntries>>,
  Expect<Equal<ObjectEntries<Partial<Model>>, ModelEntries>>,
  Expect<Equal<ObjectEntries<{ key?: undefined }>, ['key', undefined]>>,
  Expect<Equal<ObjectEntries<{ key: undefined }>, ['key', undefined]>>,
]