```ts twoslash
const getPostsUrl = (id: string) => {
  return `/posts/${id}`;
};

type PostsUrl = ReturnType<typeof getPostsUrl>;
//   ^?

const getUsersUrl = (id: string) => {
  return `/users/${id}` as const;
};

type UsersUrl = ReturnType<typeof getUsersUrl>;
//   ^?
```
