feat: disable logging if logger isn't installed

Author: mychidarko

README.md

@@ -1,4 +1,5 @@
 # Leaf Exception (Whoops)
+
 PHP errors for cool kids
 
 [![Total Downloads](https://img.shields.io/packagist/dm/leafs/exception.svg)](https://packagist.org/packages/leafs/exception)

src/Exception/General.php

@@ -68,7 +68,7 @@ public static function handleErrors($errno, $errstr = '', $errfile = '', $errlin
         } catch (\Throwable $th) {
             $app = \Leaf\Config::get('app');
 
-            if ($app && $app->config('log.enabled')) {
+            if ($app && $app->config('log.enabled') && class_exists('Leaf\Log')) {
                 $app->logger()->error($th);
             }
 
@@ -245,7 +245,7 @@ public static function defaultError($e = null)
         if ($e) {
             $app = \Leaf\Config::get('app');
 
-            if ($app && $app->config('log.enabled')) {
+            if ($app && $app->config('log.enabled') && class_exists('Leaf\Log')) {
                 $app->logger()->error($e);
             }
         }

src/Exception/Handler/PlainTextHandler.php

@@ -336,7 +336,7 @@ public function handle()
     {
         $response = $this->generateResponse();
 
-        if ($this->getLogger()) {
+        if ($this->getLogger() && class_exists('Leaf\Log')) {
             $this->getLogger()->error($response);
         }
 

src/Exception/Run.php

@@ -459,7 +459,7 @@ public function handleError($level, $message, $file = null, $line = null)
             $exception = new ErrorException($message, /*code*/ $level, /*severity*/ $level, $file, $line);
             $app = \Leaf\Config::get('app');
 
-            if ($app && $app->config('log.enabled')) {
+            if ($app && $app->config('log.enabled') && class_exists('Leaf\Log')) {
                 $app->logger()->error($exception);
             }