As someone who is about to embark on a similar route, that's interesting and exciting to hear. Was it both Android and iOS? If so, how much of the codebase/time was spent on shared code versus needing to write platform-specific portions?
I've seen the Facebook post about developing Ads Manager (though it glosses over some details), but it would be interesting to hear other people's experiences.
https://code.facebook.com/posts/1189117404435352/react-nativ...