[ ] reorganise folders? Components e.g. all countries-relevant logic in one folder. put models & handlers in one file and then you don't have to write as many tests
[ ] way to organise files
component/module based
e.g put all handlers, models, for country related logic, easier to manage in same place
[ ] if there is 1 to 1 relationship between one model and one handler then can only test the handler itself and it will use the model
[ ] can have a index.js within each module folder that only exports required handlers
so you just import the index in app to access all functions
Notes based on what Jack said: