Convert subscriber to listener, eliminating compat-style extender

extensions/likes/extend.php

@@ -16,8 +16,9 @@ use Flarum\Likes\Event\PostWasUnliked;
 use Flarum\Likes\Listener;
 use Flarum\Likes\Notification\PostLikedBlueprint;
 use Flarum\Post\Post;
+use Flarum\Post\Event\Deleted;
+use Flarum\Post\Event\Saving;
 use Flarum\User\User;
-use Illuminate\Contracts\Events\Dispatcher;
 
 return [
     (new Extend\Frontend('forum'))
@@ -55,9 +56,7 @@ return [
 
     (new Extend\Event())
         ->listen(PostWasLiked::class, Listener\SendNotificationWhenPostIsLiked::class)
-        ->listen(PostWasUnliked::class, Listener\SendNotificationWhenPostIsUnliked::class),
+        ->listen(PostWasUnliked::class, Listener\SendNotificationWhenPostIsUnliked::class)
-
+        ->listen(Deleted::class, [Listener\SaveLikesToDatabase::class, 'whenPostIsDeleted'])
-    function (Dispatcher $events) {
+        ->listen(Saving::class, [Listener\SaveLikesToDatabase::class, 'whenPostIsSaving']),
-        $events->subscribe(Listener\SaveLikesToDatabase::class);
-    },
 ];

extensions/likes/src/Listener/SaveLikesToDatabase.php

@@ -13,19 +13,9 @@ use Flarum\Likes\Event\PostWasLiked;
 use Flarum\Likes\Event\PostWasUnliked;
 use Flarum\Post\Event\Deleted;
 use Flarum\Post\Event\Saving;
-use Illuminate\Contracts\Events\Dispatcher;
 
 class SaveLikesToDatabase
 {
-    /**
-     * @param Dispatcher $events
-     */
-    public function subscribe(Dispatcher $events)
-    {
-        $events->listen(Saving::class, [$this, 'whenPostIsSaving']);
-        $events->listen(Deleted::class, [$this, 'whenPostIsDeleted']);
-    }
-
     /**
      * @param Saving $event
      */