Proxy validation

proxy.js

const userValidator = {
  set(object, prop, value) {
    const validProps = ['name', 'email'];
    if(!validProps.includes(prop)) {
      throw new Error(`Can't set ${prop}`);
    } else {
      object[prop] = value;
      return true;
    }
  },
};

class User {
  constructor({ name, email }) {
    this.name = name;
    this.email = email;
    
    return new Proxy(this, userValidator);
  }
}

const user = new User({ name: 'Sifat', email: 'sifat@gmail.com' });
user.password = '12345678';
// output: Can't set password