1 files changed, 8 insertions, 7 deletions

diff --git a/src/Monolog/Handler/SwiftMailerHandler.php b/src/Monolog/Handler/SwiftMailerHandler.php
index 44026fc..549246d 100644
--- a/src/Monolog/Handler/SwiftMailerHandler.php
+++ b/src/Monolog/Handler/SwiftMailerHandler.php
@@ -1,4 +1,4 @@
-<?php
+<?php declare(strict_types=1);
 
 /*
  * This file is part of the Monolog package.
@@ -13,6 +13,7 @@ namespace Monolog\Handler;
 
 use Monolog\Logger;
 use Monolog\Formatter\LineFormatter;
+use Swift_Message;
 
 /**
  * SwiftMailerHandler uses Swift_Mailer to send the emails
@@ -26,7 +27,7 @@ class SwiftMailerHandler extends MailHandler
 
     /**
      * @param \Swift_Mailer           $mailer  The mailer to use
-     * @param callable|\Swift_Message $message An example message for real messages, only the body will be replaced
+     * @param callable|Swift_Message $message An example message for real messages, only the body will be replaced
      * @param int                     $level   The minimum logging level at which this handler will be triggered
      * @param Boolean                 $bubble  Whether the messages that are handled can bubble up the stack or not
      */
@@ -41,7 +42,7 @@ class SwiftMailerHandler extends MailHandler
     /**
      * {@inheritdoc}
      */
-    protected function send($content, array $records)
+    protected function send(string $content, array $records)
     {
         $this->mailer->send($this->buildMessage($content, $records));
     }
@@ -51,19 +52,19 @@ class SwiftMailerHandler extends MailHandler
      *
      * @param  string         $content formatted email body to be sent
      * @param  array          $records Log records that formed the content
-     * @return \Swift_Message
+     * @return Swift_Message
      */
-    protected function buildMessage($content, array $records)
+    protected function buildMessage(string $content, array $records): Swift_Message
     {
         $message = null;
-        if ($this->messageTemplate instanceof \Swift_Message) {
+        if ($this->messageTemplate instanceof Swift_Message) {
             $message = clone $this->messageTemplate;
             $message->generateId();
         } elseif (is_callable($this->messageTemplate)) {
             $message = call_user_func($this->messageTemplate, $content, $records);
         }
 
-        if (!$message instanceof \Swift_Message) {
+        if (!$message instanceof Swift_Message) {
             throw new \InvalidArgumentException('Could not resolve message as instance of Swift_Message or a callable returning it');
         }