This is what MobX does and so does Vue and a few other frameworks like Solid or Qwik (though with a different rendering model) - hardly a novel idea. Heck even

This is what MobX does and so does Vue and a few other frameworks like Solid or Qwik (though with a different rendering model) - hardly a novel idea. Heck even in lisps there was reagent which was basically this and had atoms/signals :)