Hi:

I just see that there was a TODO in src/xwidget.c to delete a warning
about deprecations in two functions and use JavaScriptCore API.

I don't know if anyone is working on that already, so I just propose the
next patch (attachment).

If there is any specialist that want to correct/improve/comment this; it
is very welcome.

At least it is working for me.

Best,
Ergus