/*
  7 - Readonly<T>
  -------
  by Anthony Fu (@antfu) #easy #built-in #readonly #object-keys
  
  ### Question
  
  Implement the built-in `Readonly<T>` generic without using it.
  
  Constructs a type with all properties of T set to readonly, meaning the properties of the constructed type cannot be reassigned.
  
  For example
  
  ```ts
  interface Todo {
    title: string
    description: string
  }
  
  const todo: MyReadonly<Todo> = {
    title: "Hey",
    description: "foobar"
  }
  
  todo.title = "Hello" // Error: cannot reassign a readonly property
  todo.description = "barFoo" // Error: cannot reassign a readonly property

View on GitHub: https://tsch.js.org/7 */

/* _____________ Your Code Here _____________ */

type MyReadonly<T> = any

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

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

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

/* _____________ Further Steps _____________ / /

Share your solutions: https://tsch.js.org/7/answer View solutions: https://tsch.js.org/7/solutions More Challenges: https://tsch.js.org */

프로퍼티 들을 Readonly 로 만들자.

```tsx
type MyReadonly<T> = {
  readonly [P in keyof T]: T[P]
}