If you want to add additional data, you need to create a model class for your user and then store it in your Firebase database . In general, after sign up, you can create a node tree for user like picture. Then, you can get the info with user key that can get by calling FirebaseUser.
Read moreHow do I get firebase Admin SDK?
Add the Firebase Admin SDK to your server
Read moreHow do I use Firebase SDK?
Add Firebase to your JavaScript project
Read moreCan I use Firebase without backend?
You can use firebase to skip backend programming , or even user firebase to setup a nodejs backend (functions). The bad thing about not using a backend is security, you would need to master firebase security rules to completely protect data.
Read moreHow do I set Firebase authentication?
Get Started with Firebase Authentication on Websites
Read moreWhat is custom authentication in Firebase?
You can integrate Firebase Authentication with a custom authentication system by modifying your authentication server to produce custom signed tokens when a user successfully signs in . Your app receives this token and uses it to authenticate with Firebase.
Read moreCan Nodejs be used with Firebase?
Firebase provides the tools and infrastructure you need to develop, grow, and earn money from your app. This package supports web (browser), mobile-web, and server (Node. js) clients .
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