Re: [webidl] Check if NodeFilter.length is defined correctly. (#83)

I'm not sure where `Function.prototype.length` comes from, given

> Remember that interface objects for callback interfaces only exist if they have constants declared on them; when they do exist, they are not function objects.

---
Reply to this email directly or view it on GitHub:
https://github.com/heycam/webidl/issues/83#issuecomment-169051311