proxy-to-validate-javascript-object.js

/**
 * ℹ️ Topic: Use Proxy() to Set validation to javascript Object
 * 📨 Contact for personalized training: sifathaque6@gmail.com 👈
 */

const userValidator = {
	set(object, prop, value) {
		const validProps = ['name', 'email'];
		if (!validProps.includes(prop)) {
			throw new Error(`Can't set ${prop}`);
		} else {
			// You can use other validation criteria here..
			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: 'sifathaque6@gmail.com' });
user.password = '12345667';
// output: Can't set password