[i_am_ralpht]

Thanks!

Regarding your point on declarative vs imperative I think it depends on your pain threshold--you can't accomplish everything you want with CSS layout, but that doesn't mean not very useful. Crucially CSS has the escape hatches that you need to go and do your own layout if you need to (the escape hatches in CSS aren't very good, IMO, but they're there).

So I do believe that this work could be broadly useful. I frequently use apps where the panels don't incorporate momentum properly, or the motion feels disconnected from my actions.

If I were to build on this work, then I'd want to create a system where it's easier to do something pretty good than not, but you can still escape and grab full imperative control if you need to.