server.js

var express = require('express');
var app = express();
var bodyParser = require('body-parser');
var session = require('express-session');
var fs = require("fs")
var port = process.env.PORT || 8080;
var server = app.listen(port, function(){
    console.log("Express server has started on port 8080")
});
 
app.use(bodyParser.json());
app.use(bodyParser.urlencoded());
app.use(session({
    secret: '@#@$MYSIGN#@$#$',
    resave: false,
    saveUninitialized: true
}));

var router = require('./router/main')(app, fs);