Facebook built the React JavaScript library so its engineering team could build interfaces for iOS, Android, and web with the same code. Now it’s giving that development super power to everyone ...

Hermes currently is an opt-in feature in React Native. Most of Facebook’s React Native products on Android are already using Hermes, including Crisis Response and the Oculus companion app.

Facebook just open-sourced its React Native framework for building mobile apps. React Native promises to let developers write JavaScript while still delivering a real native user interface. That ...