Doesn't work in React Native app

[ray-holland-es]

This doesn't work on React Native apps, it gives you a really cryptic message. It works on android, android simulator, ios simulator, but doesn't work on physical iPhones.

Unhandled JS Exception: Invalid regular expression: invalid group specifier name

no stack

[sindresorhus]

This is a problem with React Native. You should open an issue on the React Native issue tracker instead.