meeting the requirements of a static analyzer

app/Livewire/Chat/Tracker.php

@@ -2,27 +2,17 @@
 
 namespace App\Livewire\Chat;
 
-use Livewire\Component;
 use Illuminate\Contracts\View\Factory as ViewFactory;
 use Illuminate\Contracts\View\View;
-
+use Livewire\Component;
 
 class Tracker extends Component
 {
-    public bool $showNewMessageNotifycation = false;
+    public int|bool $showNewMessageNotifycation = false;
 
     public array $myMessages = [];
 
-    // Special Syntax: ['echo:{channel},{event}' => '{method}']
-    /**
-     * some Listeners
-     *
-     * @var array
-     *
-     * */
-    protected $listeners = ['echo:direct-chat,ChatMessageUpdated' => 'notifyNewMessage'];
-
-    public function notifyNewMessage(mixed $payload): void
+    public function notifyNewMessage(string $payload): void
     {
         $this->myMessages[] = $payload;
         $this->showNewMessageNotifycation = true;
@@ -32,4 +22,9 @@ class Tracker extends Component
     {
         return view('livewire.chat.tracker');
     }
+
+    protected function getListeners(): array
+    {
+        return ['echo:direct-chat,ChatMessageUpdated' => 'notifyNewMessage'];
+    }
 }