We covered several important topics for most of the modern enterprise apps: user management, data synchronization, complex app state, and handling forms. This is a complete app, which we manage to fix with a small code base and the help of MobX and Firebase.
Firebase is very capable of handling this app in production with a large number of users, but building our own backend system should not be a complex task, especially if we have experience in working with socket.io and real-time databases.
There are some aspects missing in this chapter such as handling security (which can be done fully within Firebase) or creating chat rooms for more than two users. In any case, these aspects fall out of React Native's environment, so they were intentionally left out.
After finishing this chapter, we should be able to build any app on top of Firebase and MobX as we covered the most used user cases on both pieces of technology. Of course, there are some more complex cases that were left out, but...