I've discoverd in polymer that "observe" does not work when I use es2022 class fields.
see: Polymer/polymer#5695

I then looked in lit, how you have solved this here, only to find you didn't. :-)
see:
https://lit.dev/docs/components/properties/#avoiding-issues-with-class-fields
https://lit.dev/docs/components/decorators/#avoiding-issues-with-class-fields

as you state in the second link,
"but it should be solved as the proposal evolves and matures."
I wanted to know, is there an issue at https://github.com/tc39/proposal-decorators wich mentions the problem?
where I could see what's planned?

At the moment I solve this using get/set on the class, is this the best way atm?