Csswg-drafts: [css-font-loading] Should the font-display descriptor value be exposed on `FontFace`?

[frivoal]

Issue first reported and discussed here: https://github.com/tabatkins/specs/issues/54

(part of #1357)

Agenda+ since implementations are about to ship.

[frivoal]

cc @zachleat @heycam @KenjiBaheux

[litherum]

I'll add it just to be consistent with the other attributes in the object, but our strategy may change once https://github.com/w3c/csswg-drafts/issues/825 gets resolved.

[litherum]

If this issue is actually about the FontFace object in the CSS Font Loading API, this issue should be cloned and retagged.

[litherum]

https://chromium.googlesource.com/chromium/src/+/ec812adbe02d56c9efafcaa77c7dfd9121510959
https://hg.mozilla.org/mozilla-central/rev/6d9b17e5e7b5

https://codereview.chromium.org/2640753002
https://bugzilla.mozilla.org/show_bug.cgi?id=1157064
https://bugs.webkit.org/show_bug.cgi?id=175383

[litherum]

We should either spec the attribute, or existing implementations should remove their support.

[zachleat]

(I shouldn’t get a vote because I won’t be doing the work but if I did I’d vote for the former)

[litherum]

I'm implementing this in WebKit because the other browsers have it.