Facebook made the announcement of it open sourcing React Native For Android on GitHub today at its annual @Scale conference. 1,800 execs and engineers from Facebook, Twitter, Google, Box ...

They can then use the react-native-windows CLI to create UWP apps (with the possibility of choosing between C++ and C#). React Native Windows apps may be signed and packaged.

Facebook found that initial principles of React Native—serving as a single asynchronous, serializable, and batched bridge between JavaScript and native apps—made it harder to build features.