Save Downloaded File in www Folder

I hope to be able to use cordova-sqlite-ext to work with large, pre-populated SQLite databases that users can download.

From the docs I see that SQLite files must be located in the www folder for this to work. Is it actually possible to download files to this folder in Ionic/Cordova?

I can’t see how, because that is all bundled up inside the app package. It isn’t a real directory as far as the device’s filesystem is concerned.