Modular application in Angular.JS

core.js

angular.module('core', []).provider('Menu', function() {
  var _menu = [];

  this.$get = function() {
    return {
      get: function() {
        return _menu;
      }
    };
  };

  this.add = function(item) {
    _menu.push(item);
  };
});

gustav.js

angular.module('gustav', ['core', 'history'])
.config(function($routeProvider, $locationProvider) {
  $routeProvider.when('/home', {
    templateUrl: 'partials/home.html',
    controller: 'HomeCtrl'
  });
  $routeProvider.otherwise({redirectTo: '/home'});
})
.config(function(MenuProvider) {
  MenuProvider.add({
    icon: "glyphicon glyphicon-home",
    url: '/home',
    title: 'Domů',
  });
});

history.js

angular.module('history', ['core']).config(function($routeProvider, $locationProvider) {
  $routeProvider.when('/history', {
    templateUrl: 'partials/history.html',
    controller: 'HistoryCtrl'
  });
})
.config(function(MenuProvider) {
  MenuProvider.add({
    icon: "glyphicon glyphicon-th-list",
    url: '/history',
    title: 'Transakce',
  });
});