feat:config fn

@@ -16,7 +16,10 @@
     "autoload-dev": {
         "psr-4": {
             "Lackoxygen\\ExceptionPush\\Tests\\": "tests/"
-        }
+        },
+        "files": [
+            "src/Helper.php"
+        ]
     },
     "require": {
         "php": ">=7.4",

@@ -12,13 +12,7 @@ class Dispatcher implements CallbackInterface
      */
     public function config(): ?\Closure
     {
-        $dispatcher = ExceptionPush::config('callbacks.dispatcher');
-
-        if ($dispatcher instanceof \Closure) {
-            return $dispatcher;
-        }
-
-        return null;
+        return closure(ExceptionPush::config('callbacks.dispatcher'));
     }
 
     /**

@@ -30,13 +30,7 @@ class Formatter implements CallbackInterface
      */
     public function config(): ?\Closure
     {
-        $formatter = ExceptionPush::config('callbacks.formatter');
-
-        if ($formatter instanceof \Closure) {
-            return $formatter;
-        }
-
-        return null;
+        return closure(ExceptionPush::config('callbacks.formatter'));
     }
 
 

+<?php
+
+namespace Lackoxygen\ExceptionPush;
+
+if (!function_exists('closure')) {
+    function closure($closure): ?\Closure
+    {
+        if (is_array($closure) && 2 === count($closure)) {
+            [$class, $method] = $closure;
+
+            return function () use ($class, $method) {
+                $handler = new $class;
+
+                return call_user_func_array([$handler, $method], ...func_get_args());
+            };
+        }
+
+        if (is_string($closure)) {
+            return function () use ($closure) {
+                return call_user_func($closure, ...func_get_args());
+            };
+        }
+
+        return $closure instanceof \Closure ? $closure : null;
+    }
+}