Add focusin/focusout to GlobalEventHandlers

[Fabianopb]

According to microsoft/TypeScript#30716 focusin/focusout are missing from GlobalEventHandlersEventMap.

I have added onfocusin and onfocusout to GlobalEventHandlers and the events focusin and focusout, which were supposed to be mapped, but they haven't shown up in GlobalEventHandlersEventMap, so I could use a small help!

@saschanaz, I've searched in the history and I noticed that in #674 you've managed to add deviceorientationabsolute to WindowEventMap. How did you achieve that? I think I'm missing some detail here...

Also, I noticed that onfocus has a comment explaining its purpose, would it make sense to include comments also for onfocusin and onfocusout?

Fixes microsoft/TypeScript#30716

[saschanaz]

onfocusin and onfocusout shouldn't be added as those IDL attributes are not implemented in any browsers nor included in any spec.

So those events are without IDL attributes, and currently we only supports events handlers with corresponding attributes, so this goes tricky...

We have to fix the code so that we can add attribute-less events including DOMContentLoaded.

[Fabianopb]

Good to know @saschanaz , I was not sure, the references around onfocusin and onfocusout are a bit uncertain, even though MDN points them as event handler properties, you can't really find any spec.

Thanks for the clarification, so apparently the work is around these lines of the emitter. I'll revert the added properties and try to work something out in the emitter.

[Fabianopb]

@saschanaz I have now updated the PR to allow adding "attributeless-events" to interfaces, which are mapped to the -EventMaps, but we have to still figure out the IDL checks (reason why tests are failing). Any tips for that? Also, why do tests pass locally but break in the CI?

[saschanaz]

The master branch is currently failing (probably by TypeScript nightly behavior change). Try fixing line 200 of widlprocess.ts to name: operation.name || undefined.

[Fabianopb]

Thanks @saschanaz, Ci fixed! I'll remove the "WIP" from the title, this PR is good to be reviewed!

[saschanaz]

I once thought maybe we could fix iNameToEhList instead so that it would map event-to-property rather than current property-to-event, and found it's more complicated because some events are not in GlobalEventHandlers bun is rather spread into specific element interfaces.

[Fabianopb]

Good point @saschanaz, and thanks for the approval! Ping @RyanCavanaugh as this is probably ready to be merged.

[Fabianopb]

Keeping the PR alive, ping perhaps @sandersn ? :)