phpstan add types

app/Http/Controllers/AlertController.php

@@ -2,15 +2,24 @@
 
 namespace App\Http\Controllers;
 
+use App\Models\Alert;
+use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Http\JsonResponse;
+
 class AlertController extends Controller
 {
     /**
      * Get alerts for user
      */
-    public function index()
+    public function index(): JsonResponse
     {
-        $alerstQuery = auth()->user()->alerts()->whereNull('seen_at');
+        /** @var \App\Models\User */
+        $user = auth()->user();
 
+        /** @var \Illuminate\Database\Eloquent\Builder<Alert> */
+        $alerstQuery = $user->alerts()->whereNull('seen_at');
+
+        /** @var Collection<array-key, Alert> */
         $alerts = $alerstQuery->get();
 
         $alerstQuery->update([
@@ -22,10 +31,13 @@ class AlertController extends Controller
 
     /**
      * Format
+     *
+     * @param  Collection<array-key, Alert>  $alerts
+     * @return Collection<array-key, Alert>
      */
-    public function format($alerts)
+    public function format(Collection $alerts): Collection
     {
-        return $alerts->map(fn ($alert) => [
+        return $alerts->map(fn (Alert $alert) => [
             'name' => $alert->name,
             'value' => $alert->value,
         ]);