Re: [heycam/webidl] Need pattern for feature detecting dictionary members (#107)

Yeah, both (letting some dictionaries, such as options dictionaries, throw on unknown, and letting people test for whether a key is known to a dictionary ahead of time) seem like reasonable use-cases to me.  The former is best in general, as you can't screw it up by forgetting to check (or if you do, it'll fail in a much more obvious way on the user's side, and hopefully you're tracking unhandled exceptions), while the latter is useful when you *do* need to be proactive and know ahead of time what's available.

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/heycam/webidl/issues/107#issuecomment-304965346