// ============= Test Cases =============
import type { Equal, Expect } from './test-utils'

interface Todo {
  title: string
  description: string
  completed: boolean
  meta: {
    author: string
  }
}
type A1 = Mutable<Readonly<Todo>>;
type B1 = Todo;
type C1 = Expect<Equal<A1, B1>>;

type List = [1, 2, 3]
type A2 = Mutable<Readonly<List>>;
type B2 = List;
type C2 = Expect<Equal<A2, B2>>;

// @ts-expect-error(2344)
type E1 = Mutable<'string'>;

// @ts-expect-error(2344)
type E2 = Mutable<0>;

// ============= Your Code Here =============
type Mutable<T extends Record<string, any>> = {
  -readonly [P in keyof T]: T[P]
};