Migrate React Native to Expo

I need to convert an app from React Native cli to Expo.

What needs to be done:
> Create new project in expo and copy code from previous project
> Implement routing from scratch
> Implement app headers from scratch
> Implement axios for existing calls
> Convert class components to functional components
> Upgrade Onesignal notifications to latest package
> Refactor big components to further small components
> Implement ImageViewer and documentViewer from scratch
> Refactor code where required and make code cleaner
> Implement features that needs to be changed for expo when migrating from react native

Application scope:
> Number of screens are around 30