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

Plus developers just seem to hate the complexity of that approach. I still
hear off and on from developers who choose not to use EventListenerOptions
(or choose to just assume it's present and ignore subtle bugs with old IE)
who say basically "That's crazy, I'm not typing that".

On Fri, Sep 28, 2018 at 7:02 AM Anne van Kesteren <notifications@github.com>
wrote:

> Why would 2 not be possible? The IDL layer can always throw, right? So
> throw something IDL would never throw, like 1. It seems hard for that to
> have a side-effect since at that point the specification algorithm hasn't
> run.
>
> And although 1 is non-obvious, it seems better than maintaining a
> "supported features" side-table, which we've known historically to not
> work. (Perhaps we can do better now with better tests, but hmm...)
>
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