Uses file_exists for checking of components exists

Author: nunomaduro

src/Components/Database/Provider.php

@@ -52,7 +52,7 @@ class Provider extends AbstractComponentProvider
     public function isAvailable(): bool
     {
         return class_exists(DatabaseServiceProvider::class)
-            && is_array($this->app['config']->get('database', false))
+            && file_exists($this->app->configPath('database.php'))
             && $this->app['config']->get('database.useDefaultProvider', true) === true;
     }
 

src/Components/Log/Provider.php

@@ -28,7 +28,7 @@ final class Provider extends AbstractComponentProvider
      */
     public function isAvailable(): bool
     {
-        return class_exists(\Illuminate\Log\LogServiceProvider::class)
+        return file_exists($this->app->configPath('logging.php'))
             && $this->app['config']->get('logging.useDefaultProvider', true) === true;
     }