Feature request

Is your feature request related to a problem? Please describe.

An app for employees accessing a database "in the wild" where internet access is sparse (Germany is a third world country in that regard).

Describe the solution you'd like

Ideally there would be the same functionality as with Firestore. Modify database locally, syncs back to server once a connection is available. Querying cached data should work out of the box with no client side code necessary. Should be enabled by default.

Describe alternatives you've considered

Currently considering CouchDB, Parse, Kuzzle, SapphireDB and Appwrite. Using Firebase directly isn't possible for this project due to Open Source requirements and GDPR requirements.

Additional context

Firebase offers Firestore with really good offline-first support and data sync. Since this project is supposed to be a Firebase alternative, will this ever be supported? I couldn't find anything in the documentation regarding this.