Express as an API application exported for interoperability with Grunt.

apiServer.js

/**
 * Module dependencies.
 */
var express = require('express');
var http = require('http');
var app = express();

// all environments
app.use(express.favicon());
app.use(express.logger('dev'));
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(express.cookieParser('your secret here'));
app.use(express.cookieSession({secret: 'cool cat', maxAge: 60 * 60 * 1000}));
app.use(app.router);

// development only
if ('development' === app.get('env')) {
    app.use(express.errorHandler());
}

app.get('/', function (req, res) {
    res.sendfile('app/index.html');
});

require('./routes')(app);

exports = module.exports = http.createServer(app);

exports.use = function() {
    app.use.apply(app, arguments);
};