From 68cc7d79b3b0e98c71da8ee2615344fdd0c029d5 Mon Sep 17 00:00:00 2001
From: Enzo Innocenzi <enzo@innocenzi.dev>
Date: Fri, 13 Feb 2026 14:51:06 +0100
Subject: [PATCH] fix(router): render all development exceptions with Tempest's
 view renderer

---
 packages/router/src/GenericResponseSender.php | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/packages/router/src/GenericResponseSender.php b/packages/router/src/GenericResponseSender.php
index 472f46051..45a8e3842 100644
--- a/packages/router/src/GenericResponseSender.php
+++ b/packages/router/src/GenericResponseSender.php
@@ -19,8 +19,10 @@
 use Tempest\Http\Responses\File;
 use Tempest\Http\ServerSentEvent;
 use Tempest\Http\ServerSentMessage;
+use Tempest\Router\Exceptions\DevelopmentException;
 use Tempest\Support\Arr;
 use Tempest\Support\Json;
+use Tempest\View\Renderers\TempestViewRenderer;
 use Tempest\View\View;
 use Tempest\View\ViewRenderer;
 
@@ -104,7 +106,7 @@ private function sendContent(Response $response): void
         } elseif (is_array($body) || $body instanceof JsonSerializable) {
             echo json_encode($body);
         } elseif ($body instanceof View) {
-            echo $this->viewRenderer->render($body);
+            $this->renderView($response);
         } else {
             echo $body;
         }
@@ -112,6 +114,15 @@ private function sendContent(Response $response): void
         ob_flush();
     }
 
+    private function renderView(Response $response): void
+    {
+        if ($response instanceof DevelopmentException) {
+            echo $this->container->get(TempestViewRenderer::class)->render($response->body);
+        } else {
+            echo $this->viewRenderer->render($response->body);
+        }
+    }
+
     private function sendEventStream(EventStream $response): void
     {
         if (ob_get_level() > 0) {