Proposal (currently at stage 3): https://tc39.github.io/proposal-static-class-features/
This would land after bug #174212 lands.
Created attachment 373113 [details]
Class fields static (private and public)
WIP in patch.
This is enough to pass all current test262 tests, so it should be good for an early review if someone feels like it. It needs the code in bug #174212.