Integration with TypeScript / Mocha / other build processes

I would also like to know how I would build this project using Typescript, similar to how create-react-app-typescript works. There doesn’t seem to be any examples, but a guideline on how this would be approached would be greatly appreciated.

Ideally we wouldn’t have to introduce a grunt/gulp workflow, and just tweak some configs.

EDIT: This appears to be quite helpfui: How to pass custom transformer to react-native-scripts - #5 by alcantarahome