What about bringing CSS declarations to the mix? I have watched React Native talks in which they were advocating for this and bluntly calling it proper "separa

What about bringing CSS declarations to the mix? I have watched React Native talks in which they were advocating for this and bluntly calling it proper "separation of concerns". But when you say that presentational markup and logic should be grouped together, doesn't this mean that we have to divide our js files even further to separate business logic from presentation or view logic?