"JS dev" is shorthand for "JS-only dev". I made Android apps in Java and iOS apps in ObjC/Swift for many years. I still mostly write native code, but now I'm w

"JS dev" is shorthand for "JS-only dev". I made Android apps in Java and iOS apps in ObjC/Swift for many years. I still mostly write native code, but now I'm writing native code in various react-native packages.