Indeed, and that turns out to be a problem if the JavaScript expects the key not to be there, but instead it is there. And then you try to tell the backend dev that the key shouldn’t be there, but he’ll try to convince you that it’s the same whether the key is not there or whether it’s assigned null and then you wonder if he’s messing with you, but actually he isn’t and then the only thing keeping you sane is bitching about it in meme form on lemmy.