"Is a" type check in complex object's hierarchy

main.js

const check = require('./typeCheck');

const Base = () => {
    console.log("base");
	return this;
}


const Derived = function () {
    Base.call(this);
    console.log("derived");
    return this;
};
Derived.prototype = Object.create(Base);
Derived.prototype.constructor = Derived;

const d = new Derived();

// code to evaluate

if (check.is(d, Base)) {
    console.log("Instantiated from Base");
}

if (check.is(d, Derived)) {
    console.log("Instantiated from Derived");
}

typeCheck.js

exports = module.exports = {}

// Idea extracted from https://stackoverflow.com/questions/332422/how-do-i-get-the-name-of-an-objects-type-in-javascript

exports.is = (o, T) => {
    return o.constructor.name === T.name;
}