With this, we are able to share code between ReactJS and React Native using react-native-web package.
This is adapted from Monorepo tutorial from Bruno Lemos.
Monorepo is powered by Yarn Workspaces and components sharing is powered by react-native-web.
We can also add other packages (like a package with basic logic) and share code even with a backend project.
Both ReactJS and React Native projects were started with its most common boilerplates (i.e create-react-app and react-native-cli).