main.js

//main.js
var	util = require('util');

util.debug('main initializing');
var someMod = require('./someModule')('SomeApp', 'Tom');
someMod.displayAppName();
someMod.displayUserName();

someModule.js

//someModule.js
module.exports = function(appName, userName) {
	var	util = require('util'),
                that = {};

	that.displayAppName = function() {
		util.debug('app name: ' + appName);
	}

	that.displayUserName = function() {
		util.debug('user name: ' + userName);
	}

	return that;
}