Fix for silent failures in non-interactive mode (#19905)

packages/a2a-server/src/agent/task.ts

@@ -13,6 +13,7 @@ import {
   getAllMCPServerStatuses,
   MCPServerStatus,
   isNodeError,
+  getErrorMessage,
   parseAndFormatApiError,
   safeLiteralReplace,
   DEFAULT_GUI_EDITOR,
@@ -727,16 +728,17 @@ export class Task {
         // Block scope for lexical declaration
         // eslint-disable-next-line @typescript-eslint/no-unsafe-type-assertion
         const errorEvent = event as ServerGeminiErrorEvent; // Type assertion
-        const errorMessage =
-          errorEvent.value?.error.message ?? 'Unknown error from LLM stream';
+        const errorMessage = errorEvent.value?.error
+          ? getErrorMessage(errorEvent.value.error)
+          : 'Unknown error from LLM stream';
         logger.error(
           '[Task] Received error event from LLM stream:',
           errorMessage,
         );
 
         let errMessage = `Unknown error from LLM stream: ${JSON.stringify(event)}`;
-        if (errorEvent.value) {
-          errMessage = parseAndFormatApiError(errorEvent.value);
+        if (errorEvent.value?.error) {
+          errMessage = parseAndFormatApiError(errorEvent.value.error);
         }
         this.cancelPendingTools(`LLM stream error: ${errorMessage}`);
         this.setTaskStateAndPublishUpdate(

packages/cli/index.ts

@@ -36,7 +36,21 @@ process.on('uncaughtException', (error) => {
 });
 
 main().catch(async (error) => {
-  await runExitCleanup();
+  // Set a timeout to force exit if cleanup hangs
+  const cleanupTimeout = setTimeout(() => {
+    writeToStderr('Cleanup timed out, forcing exit...\n');
+    process.exit(1);
+  }, 5000);
+
+  try {
+    await runExitCleanup();
+  } catch (cleanupError) {
+    writeToStderr(
+      `Error during final cleanup: ${cleanupError instanceof Error ? cleanupError.message : String(cleanupError)}\n`,
+    );
+  } finally {
+    clearTimeout(cleanupTimeout);
+  }
 
   if (error instanceof FatalError) {
     let errorMessage = error.message;
@@ -46,6 +60,7 @@ main().catch(async (error) => {
     writeToStderr(errorMessage + '\n');
     process.exit(error.exitCode);
   }
+
   writeToStderr('An unexpected critical error occurred:');
   if (error instanceof Error) {
     writeToStderr(error.stack + '\n');

packages/core/src/core/turn.test.ts

@@ -261,7 +261,10 @@ describe('Turn', () => {
       const errorEvent = events[0] as ServerGeminiErrorEvent;
       expect(errorEvent.type).toBe(GeminiEventType.Error);
       expect(errorEvent.value).toEqual({
-        error: { message: 'API Error', status: undefined },
+        error: {
+          message: 'API Error',
+          status: undefined,
+        },
       });
       expect(turn.getDebugResponses().length).toBe(0);
       expect(reportError).toHaveBeenCalledWith(

packages/core/src/core/turn.ts

@@ -116,7 +116,7 @@ export interface StructuredError {
 }
 
 export interface GeminiErrorEventValue {
-  error: StructuredError;
+  error: unknown;
 }
 
 export interface GeminiFinishedEventValue {