Parse.User.allowCustomUserClass(true);

export class User extends Parse.User {
  email: string;
  password: string;
  isAdmin: string;

  constructor() {
    super('_User');
  }

  doLogin(email: string, password: string) {
    Parse.User.logIn(email,  password).then(object => {
      console.log(object);
      this.isAdmin = object.get('isAdmin');
    }).catch(console.error);
  }

  doSignUp(username: string, email: string, password: string) {
    return makeAnAdmin(email, password);
  }

}

Parse.Object.registerSubclass('User', User);

const makeAnAdmin = async (email: string, password: string): Promise<User> => {
  return Parse.User.signUp(email, password,
    {
      email: email,
      isAdmin: false
    }
  );
}