node.js web server with browser reload functionality

auto_reload.js

var connect = require('connect');
var serveStatic = require('serve-static');
var http = require('http');
var path = require('path');
var tinylr = require('tiny-lr')();
var chokidar = require('chokidar');
var tinylrPort = 2000;
var httpPort = 3000;
var readline;
var app;

function createApp(watchPath) {
	app = connect();

	app.use(require('connect-livereload')({
		port: tinylrPort,
		serverPort: httpPort
	}));

	app.use(serveStatic(watchPath ? path.resolve(watchPath) : __dirname));
	
	tinylr.listen(tinylrPort);
	http.createServer(app).listen(httpPort);

	chokidar.watch(watchPath ? path.resolve(watchPath + '/' + '**') : '**', { ignored: /[\/\\]\./ }).on('change', function(filePath) {
		tinylr.changed({
			body: {
				files: [path.resolve(__dirname + '/' + filePath)]
			}
		});
	});
	
	console.log('Server running at http://localhost:' + httpPort);
}

if (process.argv[2]) {
	createApp(process.argv[2]);
} else {
	readline = require('readline').createInterface({
		input: process.stdin,
		output: process.stdout
	});

	readline.question('Enter path or leave blank >> ', function(watchPath) {
		createApp(watchPath);
		readline.close();
	});
}