This is already a thing in Clojure/Script, using datalog instead of SQL. Syncing datoms between Datascript (and/or Datahike [0]) on the front-end and Datomic on the back-end can be almost trivial, and there are libraries like Datsync for that [1].
This reminds me of open-ui [1]. The goal of that project is also to tackle fragmentation and allow interoperability between component frameworks and design systems. How does UI Playbook compare to it? Do you think collaboration between the two projects would make sense?
You can also check out shadow-cljs which has great support for React Native development. I've been able to easily keep my project up to date with the latest React Native versions. Plus with shadow-cljs you also get access to all of npm in a very straight forward way.
I agree that the experience of querying EAV databases using SQL can feel cumbersome [0]. But Datomic's dialect of Datalog [1] is a great fit for EAV and can produce much more readable and simpler queries.
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