From 927c806ba265ef7604b8cf678a156915d087255b Mon Sep 17 00:00:00 2001
From: Sergei Predvoditelev <sergei@predvoditelev.ru>
Date: Mon, 20 Jan 2025 12:23:33 +0300
Subject: [PATCH] Allow to use `DebugHeaders` without debugger (#151)

---
 src/Debug/Middleware/DebugHeaders.php            | 4 ++--
 tests/Unit/Debug/Middleware/DebugHeadersTest.php | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/Debug/Middleware/DebugHeaders.php b/src/Debug/Middleware/DebugHeaders.php
index 722bd65..9a3cd0e 100644
--- a/src/Debug/Middleware/DebugHeaders.php
+++ b/src/Debug/Middleware/DebugHeaders.php
@@ -18,8 +18,8 @@
 final class DebugHeaders implements MiddlewareInterface
 {
     public function __construct(
-        private Debugger $debugger,
         private UrlGeneratorInterface $urlGenerator,
+        private ?Debugger $debugger = null,
     ) {
     }
 
@@ -27,7 +27,7 @@ public function process(ServerRequestInterface $request, RequestHandlerInterface
     {
         $response = $handler->handle($request);
 
-        if (!$this->debugger->isActive()) {
+        if ($this->debugger === null || !$this->debugger->isActive()) {
             return $response;
         }
 
diff --git a/tests/Unit/Debug/Middleware/DebugHeadersTest.php b/tests/Unit/Debug/Middleware/DebugHeadersTest.php
index ceae107..0943d89 100644
--- a/tests/Unit/Debug/Middleware/DebugHeadersTest.php
+++ b/tests/Unit/Debug/Middleware/DebugHeadersTest.php
@@ -28,7 +28,7 @@ public function testHeaders(): void
         $debugger->startup(new stdClass());
         $expectedId = $debugger->getId();
 
-        $middleware = new DebugHeaders($debugger, $urlGenerator);
+        $middleware = new DebugHeaders($urlGenerator, $debugger);
         $response = $middleware->process(new ServerRequest(), $this->createRequestHandler());
 
         $this->assertSame($expectedId, $response->getHeaderLine('X-Debug-Id'));