This is the source code for a blog post I am working on, see the first part of the series here,
Ionic Framework App using React Firebase Hooks - DEV Community 
https://buff.ly/2WcB4YE
This is a sample application for ionic react js custom hook for file upload to firebase storage
aaronksaunders/react-custom-fb-upload-hooks https://buff.ly/2OPRh30
