ampersand router with auth checks

router.js

var Router = require('ampersand-router');
var app = require('ampersand-app');


function auth(authLevel, fn) {
    return function () {
        if (authLevel === 'required' && !app.me.loggedIn) {
            this.redirectTo('/login');
            return;
        }

        fn.apply(this, arguments);
    };
}

module.exports = Router.extend({
    routes: {
        '': 'dashboard',
        'profile': 'profile',
        'login': 'login',
        'signup(/:token)': 'signup',
        'reset-password(/:token)': 'resetPassword',
        '*path': 'fourOhFour'
    },

    dashboard: auth('required', function () {
        app.trigger('page', new Dashboard());
    }),
     
    login: function () {
        app.trigger('page', new Login());
    }, 

    ...
});