Builds are very complicated. It's not as simple as 'JS is your whole app'. The package manager is getting better at injecting native code (react-native link) bu

Builds are very complicated. It's not as simple as 'JS is your whole app'. The package manager is getting better at injecting native code (react-native link) but has a long way to go. I spent a lot of time debugging RN. The instant reload feature comes with hangups. Tracebacks don't always appear. Navigation isn't cross-platform. Interacting with native APIs is nightmarish. JS wasn't built for java interop.