It might be a stupid question to ask, but searching on the web did not give me any conclusive result: If you want to maintain only a single code base, does it make sense to write your code in React and transpile to React Native? A client has the idea to have both an App (ideally for iOS and Android at the end) and a website all deduced from a single source.
I have some experience with webpack and I know it can be painful to configure, but is there some definite guide by Facebook on that issue which I missed?
References
One alternative is to run your react-native application on the web. The go to library for that is react-native-web.