app.js

user = require('./models.js').user(db);

models.js

var 	mongoose = require('mongoose'),
		Schema = mongoose.Schema;
		
		
mongoose.connect('mongodb://ashmokhberi:<pwrd>@flame.mongohq.com:27066/cloudmarkup-dev');

var userInfo = new Schema({
	'userName': String,
	'email': { type: String, validate: '\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b', },
	'password': String,
	'signupDate': Date,
	'lastLogin': Date,
	'salt': String 
}); 

var user = new Schema({
	'user': userInfo
});

mongoose.model('user', user)

exports.user = function(db) {
	return db.model('user')
};

Node Error

 

node.js:116
        throw e; // process.nextTick error, or 'error' event on first tick
        ^
TypeError: undefined is not a function
    at CALL_NON_FUNCTION_AS_CONSTRUCTOR (native)
    at Schema.path (/usr/local/lib/node/.npm/mongoose/1.1.0/package/lib/mongoose/schema.js:139:24)
    at Schema.add (/usr/local/lib/node/.npm/mongoose/1.1.0/package/lib/mongoose/schema.js:106:12)
    at new Schema (/usr/local/lib/node/.npm/mongoose/1.1.0/package/lib/mongoose/schema.js:38:10)
    at Object.<anonymous> (/home/ash/Sites/cloudmarkup/models.js:16:12)
    at Module._compile (module.js:383:26)
    at Object..js (module.js:389:10)
    at Module.load (module.js:315:31)
    at Function._load (module.js:276:12)
    at require (module.js:327:19)