I am considering using Firebase as MBaaS, however I couldn't find any reliable solution to the following problem:
I would like to set up two separate Firebase environments, one for development and one for production, but I don't want to do a manual copy of features (eg. remote configuration setup, notification rules, etc.) between the development and production environment.
Is there any tool or method I can rely on? Setting up remote configuration or notification rules from scratch can be a daunting task and too risky.
Any suggestions? Is there a better approach than having two separate environments?
Before you post another answer to the question which explains how to set up separate Firebase accounts: it is not the question, read it again. The question is: how to TRANSFER changes between separate dev and prod accounts or any better solution than manually copy between them.
As everyone has pointed out - you need more than one project/database.
But to answer your question regarding the need to be able to copy settings/data etc from development to production. I had the exact same need. A few months in development and testing, I didn't want to manually copy the data.
My result was to backup the data to a storage bucket, and then restore it from there into the other database. It's a pretty crude way to do it - and I did a whole database backup/restore - but you might be able to look in that direction for a more controlled way. I haven't used it - it's very new - but this might be a solution: NPM Module firestore-export-import
Edit: Firestore backup/export/import info here Cloud Firestore Exporting and Importing Data
If you're using Firebase RTDB, and not Firestore - this documentation might help: Firebase Automated Backups
You will need to set the permissions correctly to allow your production database access to the same storage bucket as your development. Good luck.