[SuperZen]

function checkAuth(req, res, next) {
		if (req.user) {
			console.log('checkAuth() is TRUE');
			next();
		} else {
			console.log('checkAuth() is FALSE');
			res.redirect('/');
		}
}

app.get('/home', checkAuth, (req, res) => {
	res.sendFile(__dirname + "/private/home.html")
});

app.use(...) - повесить глобальный middleware
app.get('/', () => здесь router specific middleware

)