React as a cross-platform UI

I got very excited when watching this talk for React Europe by Leland Richardson:

He shares a very inspiring idea to build a bridge between all different platforms we code for these days. react-primitives library is an example how this could be achieved:

This library attempts to propose an ideal set of primitives around building React applications, regardless of Platform. In the future, this could be used as a shared interface among React and React Native components that don’t use platform-specific APIs.