From 391a4878e68b73374ff6ffc528c60a57d0fbd807 Mon Sep 17 00:00:00 2001
From: Classic298 <27028174+Classic298@users.noreply.github.com>
Date: Sun, 1 Mar 2026 19:36:16 +0100
Subject: [PATCH] perf: replace JSON.parse(JSON.stringify()) with
 structuredClone in layout (#22104)

Replace JSON roundtrip with native structuredClone for tool execution result cloning. Also remove unnecessary JSON roundtrip on a static error object literal that is already a fresh value.
---
 src/routes/+layout.svelte | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/src/routes/+layout.svelte b/src/routes/+layout.svelte
index 398134d0a4..42768ca99d 100644
--- a/src/routes/+layout.svelte
+++ b/src/routes/+layout.svelte
@@ -343,17 +343,11 @@
 			}
 
 			if (cb) {
-				cb(JSON.parse(JSON.stringify(res)));
+				cb(structuredClone(res));
 			}
 		} else {
 			if (cb) {
-				cb(
-					JSON.parse(
-						JSON.stringify({
-							error: 'Tool Server Not Found'
-						})
-					)
-				);
+				cb({ error: 'Tool Server Not Found' });
 			}
 		}
 	};