Accessing module's local var

For testing reasons, is there a way to access a module's local variable?

module m {
   var i = 0;
   export function go() {
       ++i;
   }
}

m.go();
expect(m["i"]).toBe(1); // m["i"] is undefined

[That is - is it possible to access a javascript function's local var?]

Ofcourse I can export it, or make it static and wrap it in a class, but I'm looking for something cleaner.