test: guard channel provider helpers

extensions/openai/realtime-transcription-provider.test.ts

@@ -86,7 +86,9 @@ async function waitForFakeSocket(): Promise<FakeWebSocketInstance> {
   let socket: FakeWebSocketInstance | undefined;
   await vi.waitFor(() => {
     socket = FakeWebSocket.instances[0];
-    expect(socket).toBeDefined();
+    if (!socket) {
+      throw new Error("expected session to create a websocket");
+    }
   });
   if (!socket) {
     throw new Error("expected session to create a websocket");

extensions/telegram/src/polling-session.test.ts

@@ -79,9 +79,11 @@ function statusPatches(source: MockCallSource): Record<string, unknown>[] {
 }
 
 function expectPollingConnectedPatch(patch: Record<string, unknown> | undefined): void {
-  expect(patch).toBeDefined();
-  expect(patch?.connected).toBe(true);
-  expect(patch?.mode).toBe("polling");
+  if (!patch) {
+    throw new Error("Expected polling connected patch");
+  }
+  expect(patch.connected).toBe(true);
+  expect(patch.mode).toBe("polling");
 }
 
 function makeBot() {

extensions/whatsapp/src/auto-reply.web-auto-reply.connection-and-logging.e2e.test.ts

@@ -95,8 +95,11 @@ function mockStringMessages(mocked: unknown): string[] {
 
 function mockCallArg(mocked: unknown, callIndex: number, argIndex: number): unknown {
   const calls = (mocked as { mock?: { calls?: unknown[][] } }).mock?.calls;
-  expect(calls?.[callIndex]).toBeDefined();
-  return calls?.[callIndex]?.[argIndex];
+  const call = calls?.[callIndex];
+  if (!call) {
+    throw new Error(`Expected mock call at index ${callIndex}`);
+  }
+  return call[argIndex];
 }
 
 async function expectPathMissing(targetPath: string): Promise<void> {