These options are already in lots of parsers. That's part of why this proposal is attractive: we don't need much to start using it. In fact I've been using JSO

These options are already in lots of parsers. That's part of why this proposal is attractive: we don't need much to start using it. In fact I've been using JSON with comments and trailing commas in my own projects a lot already, and I imagine lots of other people have converged to the same idea since these are really the only two pain points when handwriting JSON. It's about time we give it a formal name.