I think that he should at least understand and know the CoffeeScript syntax to argue that it isn't great. If you don't know C, learnt half of it, then moaned th

I think that he should at least understand and know the CoffeeScript syntax to argue that it isn't great. If you don't know C, learnt half of it, then moaned that it didn't compile you'd look like a bit of a fool. In this case, it's logical that a comma doesn't go there. A comma would go after the closing `}`, which is optional (and so are commas in objects). If you don't know the rules of a language, I feel like it's easier to criticise wrongly.