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

>  it seems like your version of web share doesn't say yes to `supports("url")`, which seems bad. In other words it sounds like `supports("x")` will only return true for "x"s added to the spec after some point in time at which the spec authors started caring about feature detection.

That's valid. I guess you could either add all the dictionary members (but then your IDL is going to have a redundancy where every dictionary key is also listed in the `SupportsFeatures` bit), or you could say there are some basic things that any implementation really needs to have to be compliant (for `navigator.share`, that's `title`, `text` and `url`) and then there are some "add-on" features that you can omit.

> Ah, that helps me understand it better.

Note I am not trying to put words in @RByers mouth; he may have not been thinking of literally passing the full dictionary.

Yeah the partial support issue feels like a deal-breaker, at least for Web Share.

> Web IDL type coercions will cause side effects

Ouch, if that can be arbitrary side effects then I'd rather avoid it.

-- 
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-303922103