/*
  268 - If
  -------
  by Pavel Glushkov (@pashutk) #easy #utils
  
  ### Question
  
  Implement a utils `If` which accepts condition `C`, a truthy return type `T`, and a falsy return type `F`. `C` is expected to be either `true` or `false` while `T` and `F` can be any type.
  
  For example:
  
  ```ts
  type A = If<true, 'a', 'b'>  // expected to be 'a'
  type B = If<false, 'a', 'b'> // expected to be 'b'

View on GitHub: https://tsch.js.org/268 */

/* _____________ Your Code Here _____________ */

type If<C, T, F> = any

/* _____________ Test Cases _____________ */ import { Equal, Expect } from '@type-challenges/utils'

type cases = [ Expect<Equal<If<true, 'a', 'b'>, 'a'>>, Expect<Equal<If<false, 'a', 2>, 2>>, ]

// @ts-expect-error type error = If<null, 'a', 'b'>

/* _____________ Further Steps _____________ / /

Share your solutions: https://tsch.js.org/268/answer View solutions: https://tsch.js.org/268/solutions More Challenges: https://tsch.js.org */

true 면 첫번째 타입, false 면 두번째 타입

```tsx
type If<C, T, F> = C extends true ? T : F

정확하게 하려면 타입을 좁히자. (다른 솔루션 참고)

type If<C extends boolean, T, F> = C extends true ? T : F