Investigate optional feature support advertisement

[terinjokes]

No description provided.

[robertkowalski]

If I interpret the title right I think the support for the format specifiers

%o    Displays as expandable DOM element
%O    Displays as expandable JS Object
%c    Applies provided CSS

should be optional. The expandable elements are difficult to realise in a terminal, e.g. for platforms like Node.js. Basically the same applies to the CSS styling which is just partly possible (colors would be possible)

[robertkowalski]

@terinjokes ping

[robertkowalski]

did i understand intention of the title properly?

[terinjokes]

Yes, I believe so.

I think the idea was that the JS would be able to see that expandable elements aren't possible and pick a different way to log, but maybe that's just too complicated.

[domfarolino]

I feel like a lot of the text in https://console.spec.whatwg.org/#printer (specifically user experience innovation and common object formats) allows for optional feature support, which is referenced in the https://console.spec.whatwg.org/#formatting-specifiers table. I think I'll add a note in #98 so that we know to mention in some capacity, that the application of styles are up to the implementation and then close this out.