Lodash and Amersand Router clash

debugging.js

global.location = {};
global.location.replace = function(){};
global.location.href = '';
global.location.pathname = '';
global.window = {};
global.window.location = global.location;

var partialRight = require('lodash').partialRight;
var partial = require('lodash').partial;
var AmpRouter = require('ampersand-router');

var msg = function(greet, name) {
  console.log(greet, name, '!');
};

var Router = AmpRouter.extend({

  routes: {
    ':msg/jo': 'jo',
    'hi/:name': 'hi',
  },
  jo: partialRight(msg, 'jo'),
  hi: partial(msg, 'hi'),
});

var r = new Router();

r.history.start();
r.navigate('sup/jo');
r.navigate('hi/sam');

process.exit();

// console outuput:
// sup null !
// hi sam !