diff --git a/src/commands/agent.delivery.test.ts b/src/commands/agent.delivery.test.ts
index 8c9a0d5b4d52..206de3ff3c53 100644
--- a/src/commands/agent.delivery.test.ts
+++ b/src/commands/agent.delivery.test.ts
@@ -369,7 +369,7 @@ describe("deliverAgentCommandResult", () => {
 
     expect(runtime.log).toHaveBeenCalledTimes(1);
     expect(
-      JSON.parse(String((runtime.log as ReturnType<typeof vi.fn>).mock.calls.at(0)?.[0])),
+      JSON.parse(String((runtime.log as ReturnType<typeof vi.fn>).mock.calls[0]?.[0])),
     ).toEqual({
       payloads: [
         {
diff --git a/src/commands/agent.runtime-config.test.ts b/src/commands/agent.runtime-config.test.ts
index 03db12f2baf3..5b4d6db34f32 100644
--- a/src/commands/agent.runtime-config.test.ts
+++ b/src/commands/agent.runtime-config.test.ts
@@ -64,7 +64,7 @@ async function withTempHome<T>(fn: (home: string) => Promise<T>): Promise<T> {
 }
 
 function requireResolveCommandConfigParams(callIndex = 0): ResolveCommandConfigParams {
-  const call = resolveCommandConfigWithSecretsMock.mock.calls.at(callIndex);
+  const call = resolveCommandConfigWithSecretsMock.mock.calls[callIndex];
   if (!call) {
     throw new Error(`expected command config resolution call ${callIndex}`);
   }
diff --git a/src/commands/auth-choice.test.ts b/src/commands/auth-choice.test.ts
index 8d19572f96ab..899d9ea3ccc1 100644
--- a/src/commands/auth-choice.test.ts
+++ b/src/commands/auth-choice.test.ts
@@ -639,7 +639,7 @@ describe("applyAuthChoice", () => {
     expect(promptMessages(mock)).toContain(expected);
   }
   function firstCallArg(mock: { mock: { calls: unknown[][] } }): unknown {
-    const call = mock.mock.calls.at(0);
+    const call = mock.mock.calls[0];
     if (!call) {
       throw new Error("Expected first mock call");
     }
diff --git a/src/commands/configure.gateway-auth.prompt-auth-config.test.ts b/src/commands/configure.gateway-auth.prompt-auth-config.test.ts
index eeaaa2ea694f..68b93fbce12a 100644
--- a/src/commands/configure.gateway-auth.prompt-auth-config.test.ts
+++ b/src/commands/configure.gateway-auth.prompt-auth-config.test.ts
@@ -211,7 +211,7 @@ function makeRuntime(): RuntimeEnv {
 }
 
 function promptModelAllowlistOptions(index = 0) {
-  return mocks.promptModelAllowlist.mock.calls.at(index)?.at(0) as
+  return mocks.promptModelAllowlist.mock.calls[index]?.[0] as
     | {
         allowedKeys?: string[];
         initialSelections?: string[];
diff --git a/src/commands/doctor-gateway-daemon-flow.test.ts b/src/commands/doctor-gateway-daemon-flow.test.ts
index 5ce67f2747fb..7136da2275c0 100644
--- a/src/commands/doctor-gateway-daemon-flow.test.ts
+++ b/src/commands/doctor-gateway-daemon-flow.test.ts
@@ -307,7 +307,7 @@ describe("maybeRepairGatewayDaemon", () => {
     });
 
     expect(readGatewayRestartHandoffSync).toHaveBeenCalledOnce();
-    const [handoffEnv] = readGatewayRestartHandoffSync.mock.calls.at(0) as unknown as [
+    const [handoffEnv] = readGatewayRestartHandoffSync.mock.calls[0] as unknown as [
       { OPENCLAW_STATE_DIR?: string; OPENCLAW_CONFIG_PATH?: string },
     ];
     expect(handoffEnv?.OPENCLAW_STATE_DIR).toBe("/tmp/openclaw-service");
diff --git a/src/commands/doctor-gateway-services.test.ts b/src/commands/doctor-gateway-services.test.ts
index 1511fdbfc3ce..733402414045 100644
--- a/src/commands/doctor-gateway-services.test.ts
+++ b/src/commands/doctor-gateway-services.test.ts
@@ -202,7 +202,7 @@ function requireRecord(value: unknown, label: string): Record<string, unknown> {
 }
 
 function callArg(mock: { mock: { calls: Array<Array<unknown>> } }, index: number, label: string) {
-  const call = mock.mock.calls.at(index);
+  const call = mock.mock.calls[index];
   if (!call) {
     throw new Error(`Expected mock call: ${label}`);
   }
diff --git a/src/commands/migrate.test.ts b/src/commands/migrate.test.ts
index 9583bd12bc69..1a54a5050dd8 100644
--- a/src/commands/migrate.test.ts
+++ b/src/commands/migrate.test.ts
@@ -226,7 +226,7 @@ type MigrationSelectionPrompt = {
 };
 
 function mockCall(source: MockCallSource, callIndex = 0): ReadonlyArray<unknown> {
-  const call = source.mock.calls.at(callIndex);
+  const call = source.mock.calls[callIndex];
   if (!call) {
     throw new Error(`Expected mock call ${callIndex}`);
   }
diff --git a/src/commands/model-picker.test.ts b/src/commands/model-picker.test.ts
index 641982753abb..631412112639 100644
--- a/src/commands/model-picker.test.ts
+++ b/src/commands/model-picker.test.ts
@@ -182,7 +182,7 @@ function requireRecord(value: unknown, label: string): Record<string, unknown> {
 }
 
 function mockArg(source: MockCallSource, callIndex: number, argIndex: number, label: string) {
-  const call = source.mock.calls.at(callIndex);
+  const call = source.mock.calls[callIndex];
   if (!call) {
     throw new Error(`expected mock call: ${label}`);
   }
@@ -617,7 +617,7 @@ describe("promptDefaultModel", () => {
     expect(result.model).toBe("openai-codex/gpt-5.5-pro");
     expect(loadModelCatalog).toHaveBeenCalledOnce();
     expect(select).toHaveBeenCalledTimes(2);
-    expect(select.mock.calls.at(1)?.[0]?.searchable).toBe(true);
+    expect(select.mock.calls[1]?.[0]?.searchable).toBe(true);
   });
 
   it("supports configuring vLLM during setup", async () => {