abstract class User {
  
  abstract login(email: string, password: string): void
  
  abstract sendCode(email: string, code: string): void
  
}

abstract class Auth {
  abstract login(email: string, password: string): void
}


abstract class Email {
  abstract send(email: string, message: string): void
}

abstract class Repository<T, K extends keyof T> {
  abstract findAll(): T[];
  abstract findOne(key: T[K]): T[];
  abstract create(entity: Omit<T, K>): void;
  abstract update(key: T[K], entity: Partial<T>): void;
  abstract remove(key: T[K]): void;
}

abstract class UserRepository extends Repository<User, 'id'> {
  abstract findOneByEmail(email: string): User
}