Standard server setup using handlebars as a view engine

handlebars.index.js

const 
    express     = require('express'), 
    exphbs      = require('express-handlebars'),
    bodyParser  = require('body-parser'), 
    path        = require('path'),
    app         = express(),
    routes      = require('./routing/htmlRoutes'),
    port        = process.env.PORT || 3200;

app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.text());
app.use(bodyParser.json({ type: "application/vnd.api+json" }));
app.use(express.static(path.join(__dirname + '/public')));
app.use(express.static(path.join(__dirname, "js")));

app.engine('.hbs', exphbs({
    defaultLayout: 'main',
    extname: '.hbs',
    partialsDir: ['views/partials']
}));
app.set('views' + '' + path.join(__dirname +  '/views'));
app.set('view engine', '.hbs');

require('./routing/apiRoutes')(app);
app.use('/', routes);

app.listen(port, () => {
    console.log(`App listening on port: ${port}`);
});