This is the way I create modules:

myModule.js

var MyObject = function() {



    // This is private because it is not being return

    var _privateFunction = function(param1, param2) {

        ...

        return;

    }



    var function1 = function(param1, callback) {

        ...

        callback(err, results);    

    }



    var function2 = function(param1, param2, callback) {

        ...

        callback(err, results);    

    }



    return {

        function1: function1

       ,function2: function2

    }

}();



module.exports = MyObject;

And to use this module in another JS file, you can simply use require and use your object as normal:

someFile.js

var myObject = require('myModule');



myObject.function1(param1, function(err, result) { 

    ...

});