JSFiddle - React, Tailwind, and code Playground

HTML

<body>
</body>

JavaScript

"use strict";

class Person {
    constructor(x, y) {
        this.x = x;
        this.y = y;
    }
}
window.classes = {};
window.classes.Person = Person;

document.body.innerText = JSON.stringify(new window.classes["Person"](1, 2));