I’m actually working on something like that, but it isn’t a framework necessarily. I’ve described it as a “programming language for designers”. The idea is to

I’m actually working on something like that, but it isn’t a framework necessarily. I’ve described it as a “programming language for designers”. The idea is to allow designers to specify the graphical layer of apps, without specifying any behavior. The core language itself is platform-agnostic, with platform-specific dialects. So you could use it to spec out a web/iOS/android/etc app. And the cool thing about it is that it compiles to an intermediate representation, which will be a JSON data structure. So you could use it to generate a React component library, or Vue, or Angular, or web components, etc etc.