1 files changed, 16 insertions, 15 deletions
diff --git a/vendor/composer/ClassLoader.php b/vendor/composer/ClassLoader.php
index afef3fa2a..3a8ed4886 100644
--- a/vendor/composer/ClassLoader.php
+++ b/vendor/composer/ClassLoader.php
@@ -42,6 +42,9 @@ namespace Composer\Autoload;
  */
 class ClassLoader
 {
+    /** @var \Closure(string):void */
+    private $includeFile;
+
     /** @var ?string */
     private $vendorDir;
 
@@ -106,6 +109,18 @@ class ClassLoader
     public function __construct($vendorDir = null)
     {
         $this->vendorDir = $vendorDir;
+
+        /**
+         * Scope isolated include.
+         *
+         * Prevents access to $this/self from included files.
+         *
+         * @param  string $file
+         * @return void
+         */
+        $this->includeFile = static function($file) {
+            include $file;
+        };
     }
 
     /**
@@ -425,7 +440,7 @@ class ClassLoader
     public function loadClass($class)
     {
         if ($file = $this->findFile($class)) {
-            includeFile($file);
+            ($this->includeFile)($file);
 
             return true;
         }
@@ -556,17 +571,3 @@ class ClassLoader
         return false;
     }
 }
-
-/**
- * Scope isolated include.
- *
- * Prevents access to $this/self from included files.
- *
- * @param  string $file
- * @return void
- * @private
- */
-function includeFile($file)
-{
-    include $file;
-}