This looks very cool. And tempting at the first glance. As I read more of the documentation, I can't help stop comparing it with React-native for the rendering part. I remember somebody mentioning server-rendered mobile apps in one of the early react-native apps. This is pretty much achieving that.

However, the comparison ends there. This is great! Its just too simple to make an app and probably when the app grows one could create a transpiler to generate this json