From df9c9adeff8724c7b705f8f344d58f0d36bdb87d Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Wed, 13 May 2026 06:27:58 +0100
Subject: [PATCH] test: dedupe mantle anthropic mock read

---
 .../amazon-bedrock-mantle/mantle-anthropic.runtime.test.ts      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/extensions/amazon-bedrock-mantle/mantle-anthropic.runtime.test.ts b/extensions/amazon-bedrock-mantle/mantle-anthropic.runtime.test.ts
index d3bfe204541..2d56428ef7b 100644
--- a/extensions/amazon-bedrock-mantle/mantle-anthropic.runtime.test.ts
+++ b/extensions/amazon-bedrock-mantle/mantle-anthropic.runtime.test.ts
@@ -38,7 +38,7 @@ function requireRecord(value: unknown, label: string): Record<string, unknown> {
 }
 
 function mockCallArg(mock: { mock: { calls: unknown[][] } }, index = 0, argIndex = 0): unknown {
-  const call = mock.mock.calls.at(index);
+  const call = mock.mock.calls[index];
   if (!call) {
     throw new Error(`expected mock call ${index}`);
   }