Localization Express.js: Language in URL

app.js

const express = require('express');
var app = express();
var hbs = require('hbs');
var i18n = require("i18n");
var _ = require('lodash');
app.set('view engine', 'hbs');

// Available languages
let locales = ['es', 'de', 'en', 'fr', 'it'];

// Set up i18n
i18n.configure({
	locales: locales, // locales disponibles
	defaultLocale: 'en', // local por defecto
	directory: __dirname + '/locales' // directorio donse se guardan las traducciones en formato .json
});

// Middleware to detect the locale on url
app.use(function(req,res,next){

	// Helper to use i18n inside HBS
	res.locals.__ = res.__ = function() {
		return i18n.__.apply(req, arguments);
  	};

	// Look for the locale on the first tram of the url
	// example: www.example.com/local/path
	var path = _.split(req.path, "/", 2)
	locales.forEach( (locale) => {
		if(path[1] == locale){
			// if detected, use it 
			i18n.setLocale(req, locale);
		}
	});

	next();
})

// Crate a route for every locale
locales.forEach( (locale) => {
  
	app.get('/' + locale, function(req, res) {
		res.send(locale);
	});
  
});