Following code style convention

Author: Lloople

src/OneSignalChannel.php

@@ -3,13 +3,12 @@
 namespace NotificationChannels\OneSignal;
 
 use Berkayk\OneSignal\OneSignalClient;
-use NotificationChannels\OneSignal\Exceptions\CouldNotSendNotification;
-use Illuminate\Notifications\Notification;
 use Psr\Http\Message\ResponseInterface;
+use Illuminate\Notifications\Notification;
+use NotificationChannels\OneSignal\Exceptions\CouldNotSendNotification;
 
 class OneSignalChannel
 {
-
     /** @var OneSignalClient */
     protected $oneSignal;
 
@@ -21,26 +20,28 @@ public function __construct(OneSignalClient $oneSignal)
     /**
      * Send the given notification.
      *
-     * @param mixed                                  $notifiable
+     * @param mixed $notifiable
      * @param \Illuminate\Notifications\Notification $notification
      *
      * @throws \NotificationChannels\OneSignal\Exceptions\CouldNotSendNotification
      */
     public function send($notifiable, Notification $notification)
     {
-        if (!$userIds = $notifiable->routeNotificationFor('OneSignal')) {
+        if (! $userIds = $notifiable->routeNotificationFor('OneSignal')) {
             return;
         }
 
         $payload = $notification->toOneSignal($notifiable)->toArray();
+
         if (is_array($userIds) && array_key_exists('email', $userIds)) {
-            $payload['filters'] = collect([["field" => "email", "value" => $userIds['email']]]);
+            $payload['filters'] = collect([['field' => 'email', 'value' => $userIds['email']]]);
         } else {
             $payload['include_player_ids'] = collect($userIds);
         }
 
         /** @var ResponseInterface $response */
         $response = $this->oneSignal->sendNotificationCustom($payload);
+
         if ($response->getStatusCode() !== 200) {
             throw CouldNotSendNotification::serviceRespondedWithAnError($response);
         }

tests/ChannelTest.php

@@ -11,7 +11,6 @@
 
 class ChannelTest extends TestCase
 {
-
     /** @var Mockery\Mock */
     protected $oneSignal;
 
@@ -101,11 +100,10 @@ public function it_can_send_a_notification_with_email()
                 'chrome_icon' => 'Icon',
                 'adm_small_icon' => 'Icon',
                 'small_icon' => 'Icon',
-                'filters' => collect([["field" => "email", "value" => '[email protected]']]),
+                'filters' => collect([['field' => 'email', 'value' => '[email protected]']]),
             ])
             ->andReturn($response);
 
         $this->channel->send(new NotifiableEmail(), new TestNotification());
     }
-
 }

tests/NotifiableEmail.php

@@ -4,7 +4,6 @@
 
 class NotifiableEmail
 {
-
     use \Illuminate\Notifications\Notifiable;
 
     /**