compat.js

$RouteProvider.$inject = ['$stateProvider', '$urlRouterProvider'];
function $RouteProvider(  $stateProvider,    $urlRouterProvider) {

  var routes = [];

  onEnterRoute.$inject = ['$$state'];
  function onEnterRoute(   $$state) {
    /*jshint validthis: true */
    this.locals = $$state.locals.globals;
    this.params = this.locals.$stateParams;
  }

  function onExitRoute() {
    /*jshint validthis: true */
    this.locals = null;
    this.params = null;
  }

  this.when = when;
  function when(url, route) {
    /*jshint validthis: true */
    if (route.redirectTo != null) {
      // Redirect, configure directly on $urlRouterProvider
      var redirect = route.redirectTo, handler;
      if (isString(redirect)) {
        handler = redirect; // leave $urlRouterProvider to handle
      } else if (isFunction(redirect)) {
        // Adapt to $urlRouterProvider API
        handler = function (params, $location) {
          return redirect(params, $location.path(), $location.search());
        };
      } else {
        throw new Error("Invalid 'redirectTo' in when()");
      }
      $urlRouterProvider.when(url, handler);
    } else {
      // Regular route, configure as state
      $stateProvider.state(inherit(route, {
        parent: null,
        name: 'route:' + encodeURIComponent(url),
        url: url,
        onEnter: onEnterRoute,
        onExit: onExitRoute
      }));
    }
    routes.push(route);
    return this;
  }

  this.$get = $get;
  $get.$inject = ['$state', '$rootScope', '$routeParams'];
  function $get(   $state,   $rootScope,   $routeParams) {

    var $route = {
      routes: routes,
      params: $routeParams,
      current: undefined
    };

    function stateAsRoute(state) {
      return (state.name !== '') ? state : undefined;
    }

    $rootScope.$on('$stateChangeStart', function (ev, to, toParams, from, fromParams) {
      $rootScope.$broadcast('$routeChangeStart', stateAsRoute(to), stateAsRoute(from));
    });

    $rootScope.$on('$stateChangeSuccess', function (ev, to, toParams, from, fromParams) {
      $route.current = stateAsRoute(to);
      $rootScope.$broadcast('$routeChangeSuccess', stateAsRoute(to), stateAsRoute(from));
      copy(toParams, $route.params);
    });

    $rootScope.$on('$stateChangeError', function (ev, to, toParams, from, fromParams, error) {
      $rootScope.$broadcast('$routeChangeError', stateAsRoute(to), stateAsRoute(from), error);
    });

    return $route;
  }
}

angular.module('ui.compat')
  .provider('$route', $RouteProvider)
  .directive('ngView', $ViewDirective);