[jsmith45]

> I think Solid is in this camp too, but I haven't used it.

Correct. Solid is all about signals (reactive values). When you run any effect (rendering updates are effects created behind the scenes for you), it will get run once immediately, tracking which signals where called. Then it will subscribe to those signals to re-run the effect on change, and it will resubscribe to newly called signals, and unsubscribe from no-longer called signals.

I believe that it is roughly equivalent to Vue's reactive api, except that rather than using a proxy or setters to allow object mutation to trigger effects or re-render, it uses separate update functions, more like react hooks do.