events: expose Event statics
Expose Event statics (Event.NONE etc). See Event phase constants.
- Chrome, Firefox, Edge, and Safari implement these.
- IE11 implements all of these except NONE (for some reason).
I think these are required on the event interface (as constants).
They are as-enumerable as they are in browsers though I did not add a specific test for enumerability (I can if people feel strongly about it)
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines