It’s cool, sure, but I’m saddened by seeing yet another attempt at doing similar things in a radical different way, which ultimately does not contribute at making JS a better language. Don’t get me wrong, I’m not going into the debate of what’s better, but stamps is just so different that it will just confuse anyone not knowing it at first. More importantly, classes are either way here to stay hence I would have preferred, somehow, to see an attempt at making classes better, with the real potential to be included in ES8/9/…