JSFiddle - React, Tailwind, and code Playground

JavaScript

var Point = (function () {
    function Point(x, y) {
        this.x = x;
        this.y = y;
    }
    Point.prototype.dist = function () {
        return Math.sqrt(this.x * this.y + this.x * this.y);
    };
    return Point;
})();

var p = { x: 10, y: 20 };
console.log(Point.prototype.dist.call(p));