tedb-org.github.io Is a database you can write a storage driver for for react native. This can be used to creat in memory or persistent darabases on any system provided you write a compliant storage driver. I am currently using it in production for our company's Electron app and soon will use it for our React Native app.
Myself and another are the active developers but people from Feathersjs are also on board. If you have any questions shoot me a message or reply here.