React Native note

1.

If anyone wants to improve on these instructions and add them to the docs, feel free, I can do it later if nobody else jumps on it - I just wanted to document it somewhere for now.

Open iOS/AppDelegate.m
Comment out jsCodeLocation = [NSURL URLWithString:@"http://localhost:8081/index.ios.bundle"];
Uncomment jsCodeLocation = [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"];
Start up the packager with npm start and then run curl http://localhost:8081/index.ios.bundle -o main.jsbundle - if this fails (as it did on my machine) add the --ipv4 flag to the end of it.
In XCode, right click on your project directory and click Add Files to "Project Name Here" - choose the main.jsbundle file that you generated.
You can now run the app on a device (either via usb or TestFlight) without needing to have a server running.

cited from https://github.com/facebook/react-native/issues/240#issuecomment-86977126