Use Routes extender

extensions/subscriptions/bootstrap.php

@@ -10,6 +10,7 @@
  */
 
 use Flarum\Extend;
+use Flarum\Forum\Controller\FrontendController;
 use Flarum\Subscriptions\Listener;
 use Illuminate\Contracts\Events\Dispatcher;
 use Illuminate\Contracts\View\Factory;
@@ -19,6 +20,8 @@ return [
         ->asset(__DIR__.'/js/forum/dist/extension.js')
         ->asset(__DIR__.'/less/forum/extension.less')
         ->bootstrapper('flarum/subscriptions/main'),
+    (new Extend\Routes('forum'))
+        ->get('/following', 'following', FrontendController::class),
     function (Dispatcher $events, Factory $views) {
         $events->subscribe(Listener\AddDiscussionSubscriptionAttribute::class);
         $events->subscribe(Listener\FilterDiscussionListBySubscription::class);

extensions/subscriptions/src/Listener/FilterDiscussionListBySubscription.php

@@ -13,7 +13,6 @@ namespace Flarum\Subscriptions\Listener;
 
 use Flarum\Discussion\Event\Searching;
 use Flarum\Event\ConfigureDiscussionGambits;
-use Flarum\Event\ConfigureForumRoutes;
 use Flarum\Subscriptions\Gambit\SubscriptionGambit;
 use Illuminate\Contracts\Events\Dispatcher;
 
@@ -26,7 +25,6 @@ class FilterDiscussionListBySubscription
     {
         $events->listen(ConfigureDiscussionGambits::class, [$this, 'addGambit']);
         $events->listen(Searching::class, [$this, 'filterIgnored']);
-        $events->listen(ConfigureForumRoutes::class, [$this, 'addRoutes']);
     }
 
     /**
@@ -54,12 +52,4 @@ class FilterDiscussionListBySubscription
             });
         }
     }
-
-    /**
-     * @param ConfigureForumRoutes $event
-     */
-    public function addRoutes(ConfigureForumRoutes $event)
-    {
-        $event->get('/following', 'following');
-    }
 }