Now that we have automated tests for the model and a user-defined module which makes use of it, let's build a sample Express-based application exposing this module via HTTP:
var express = require('express')
, http = require('http')
, path = require('path')
, bodyParser = require('body-parser')
, logger = require('morgan')
, methodOverride = require('method-override')
, errorHandler = require('errorhandler')
, mongoose = require('mongoose')
, dataservice = require('./modules/contactdataservice');
var app = express();
var url = require('url');
// all environments
app.set('port', process.env.PORT || 3000);
app.set('views', __dirname + '/views');
app.set('view engine', 'jade');
app.use(methodOverride());
app.use(bodyParser.json());
// development only
if ('development' == app.get('env')) {
app.use(errorHandler());
...