Simple restify-nedb example not working

gistfile1.txt

var morgan = require('morgan')
var compression = require('compression')
var express = require('express');
var methodOverride = require('method-override')
var bodyParser = require('body-parser')
var app = express();

app.set('port', 1337);

app.use(compression());
app.use(methodOverride());
app.use(bodyParser());
app.use(morgan('combined'));
var server = require('http').createServer(app);

var restify = require('restify-nedb').mount;
var config = require('restify-nedb').config;

var path = require('path');
var Datastore = require('nedb');
var db = new Datastore();

// default config options
var opts = {
  prefix: '/kernel'
};

// initialize our config object

cfg = new config(opts);

// if you aren't already using an nedb
// instance, then calling this will create
// one for you.

// accepts sync/blocking

// cfg.makeDataStore();

// api = new restify(cfg, app);

// or async <3

api = new restify(cfg, app);

server.listen(app.get('port'), function () {
  console.log('restify-nedb example listening on %s', app.get('port'));
});