auth.js in auth middleware.

auth-middleware.js

module.exports = {
    ensureAuth: function(req,res,next) {
        if(req.isAuthenticated()) {
            return next()
        } else {
            res.redirect('/');
        }
    },
    ensureGuest : function(req,res,next){
        if(req.isAuthenticated()) {
            res.redirect('/dashboard')
        } else {
            return next();
        }
    }

}