JSFiddle - React, Tailwind, and code Playground

JavaScript

let User = (quantity => class User {
	constructor(name, type = 'simpleUser') {
		this.name = name;
		this.type = type;
		this.id = quantity;
		quantity++;
	}
})(0)

let hello1 = new User('Zed');
let hello2 = new User('Alpha');
let hello3 = new User('Omega');
alert(hello1.id);
alert(hello2.id);
alert(hello3.id);