Comparison of module method declarations

Thanks. I've been looking at the size of the FlashStore modules I've made. It looks like you can gain quite a bit by shorting variable names I.e, address -> addr and shorting up internal this.xxx vars.
It also uses child objects pointing to a parent, so I'm wondering if a single class that is both will reduce the overall code size considerably, as its 2000 byes for both the flashItem and FlashStore modules (not fully minimized yet)

http://forum.espruino.com/conversations/283045/