refactoringBadJs.js

// Nasty line to refactor: 
// app.use(require('express-session')({ secret: 'keyboard cat', resave: false, saveUninitialized: false }));
// No one can read that

// expressSession library
var expressSession = require('express-session');

// sessionOptions object
var sessionOptions = { 
    secret: "keyboard cat",
    resave: false,
    saveUninitialized: true
}

var sessionInstance = expressSession(sessionOptions);

// Use the session instance
app.use(sessionInstance);