Private methods in a module, and modules in BangleApps

I'm trying to write a module for shared code between my BangleJs Apps.
According to the tutorial, everything should be working at this Point.
I required the module with the GitHub URL to it and it downloads, but when i create the object that should have all public functions and constants, it only has the variables that were set in the constructor.
Am I doing something wrong or is the tutorial not working?
Here is the module: https://github.com/OmegaVoid/EspruinoDocs/blob/master/modules/dane_arwes.js