From 22f46e87d1397e211bf2b58d4394c15f1c6d7ce2 Mon Sep 17 00:00:00 2001
From: Sebastian Markbage <sebastian@calyptus.eu>
Date: Thu, 24 Jul 2025 17:41:11 -0400
Subject: [PATCH] Feature detect createSidebarPane

---
 packages/react-devtools-extensions/src/main/index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/react-devtools-extensions/src/main/index.js b/packages/react-devtools-extensions/src/main/index.js
index 46c42418c331..d7756ca991be 100644
--- a/packages/react-devtools-extensions/src/main/index.js
+++ b/packages/react-devtools-extensions/src/main/index.js
@@ -317,7 +317,7 @@ function createSourcesEditorPanel() {
   }
 
   const sourcesPanel = chrome.devtools.panels.sources;
-  if (!sourcesPanel) {
+  if (!sourcesPanel || !sourcesPanel.createSidebarPane) {
     // Firefox doesn't currently support extending the source panel.
     return;
   }