‏Pick وOmit: اختيار الخصائص

interface User { id: number; name: string; email: string; role: string; }
type PublicUser = Pick<User, 'id' | 'name'>;
// { id: number; name: string }

type UserWithoutRole = Omit<User, 'role'>;
// { id: number; name: string; email: string }

type UserCard = Pick<User, 'name' | 'email'>;

interface Post { id: number; title: string; content: string; createdAt: Date; }
type CreatePost = Omit<Post, 'id' | 'createdAt'>;
// { title: string; content: string }

type Pick<T, K extends keyof T> = { [P in K]: T[P] };

type Omit<T, K extends keyof any> = Pick<T, Exclude<keyof T, K>>;

type MinimalUser = Pick<User, 'id' | 'email'>;

type SafeUser = Omit<User, 'password' | 'token' | 'internalId'>;

type UpdatePost = Partial<Omit<Post, 'id' | 'createdAt'>>;
// Can update title and content, both optional