TypeError: object is not a function
at Object.CALL_NON_FUNCTION (native)
at Object. (/home/node/app/app.js:12:40)
at Module._compile (module.js:402:26)
at Object..js (module.js:408:10)
at Module.load (module.js:334:31)
at Function._load (module.js:293:12)
at Array. (module.js:421:10)
at EventEmitter._tickCallback (node.js:126:26)

var helpers = require('express-helpers')(app);

var helpers = require('express-helpers');

var express = require('express');
var app = express.createServer();
app.listen(34573);

// !Requires
var helpers = require('express-helpers')(app);