From 9144ca238aa97c94b1a6c0cbc22a9ee591ec8416 Mon Sep 17 00:00:00 2001
From: Mark Kercso <mkercso@amazon.com>
Date: Mon, 9 Mar 2026 13:58:51 +0000
Subject: [PATCH] fix: Ensure parentOrigin exists for postMessage

---
 overrides/resources/server/index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/overrides/resources/server/index.html b/overrides/resources/server/index.html
index 28d0eef..f2ac2b0 100644
--- a/overrides/resources/server/index.html
+++ b/overrides/resources/server/index.html
@@ -24,7 +24,7 @@
 			originalLogError(...args);
 			const [message, filename, line, column, error] = args;
 
-			if (!window.isErrorSuppressed(message)) {
+			if (!window.isErrorSuppressed(message) && !!postMessage) {
 				window.parent.postMessage({
 				channel: 'code-editor.error',
 				type: 'application/x-code-editor+json',