Module References in CommonJS

var mod1 = require('./mod1');
var mod2 = require('./mod2');

mod1.impactMod2();
console.log(mod2.prop);
var mod2 = require('./mod2');

exports.impactMod2 = function() {
    mod2.prop = 'Changed from mod1';
};
exports.prop = 'Defaulted in mod2';