medium-11.js

function Child(...args) {
    const {constructor} = Object.getPrototypeOf(homeObject);
    const $this = Reflect.construct(constructor, args);

    // initialize subclass properties
    $this.x = 43;
    return $this;
}
Object.setPrototypeOf(Child, Base);
Object.setPrototypeOf(Child.prototype, Base.prototype);
const homeObject = Child.prototype;


const obj = new Child('some', 'args', 'for the superclass ctor');
console.log(obj.x); // 43