Type Challenges Judge

Problems

Progress

Mutable

提出詳細

type Mutable<T extends object> = { -readonly [P in keyof T]: T[P] };
提出日時2022-06-28 05:18:59
問題Mutable
ユーザーwaki285
ステータスAccepted
テストケース
import type { Equal, Expect } from '@type-challenges/utils'

interface Todo1 {
  title: string
  description: string
  completed: boolean
  meta: {
    author: string
  }
}

type List = [1, 2, 3]

type cases = [
  Expect<Equal<Mutable<Readonly<Todo1>>, Todo1>>,
  Expect<Equal<Mutable<Readonly<List>>, List>>,
]

type errors = [
  // @ts-expect-error
  Mutable<'string'>,
  // @ts-expect-error
  Mutable<0>,
]