[Architect from Couchbase]

The formatting and modularization of your sync function code will strongly influence both it's readability and maintainability.

I've published and example of one that is well formatted and modularized. The example includes Navigation Flow, Wireframes, Data Modeling, and a Sync Function (which is the security layer).

https://github.com/waynecarter/couchbase-mobile-examples/wik...

Let me know if you have any other questions around this and I will add it to the example.