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Omit

提出詳細

type MyExclude<T,U> = T extends U ? never : T;
type MyOmit<T, K extends keyof T> = {
  [key in keyof T as MyExclude<key,K>]: T[key]
}

提出日時	2023-09-13 02:48:56
問題	Omit
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<Expected1, MyOmit<Todo, 'description'>>>,
  Expect<Equal<Expected2, MyOmit<Todo, 'description' | 'completed'>>>,
]

// @ts-expect-error
type error = MyOmit<Todo, 'description' | 'invalid'>

interface Todo {
  title: string
  description: string
  completed: boolean
}

interface Expected1 {
  title: string
  completed: boolean
}

interface Expected2 {
  title: string
}