Merge pull request #325 from QwenLM/fix/max_listeners_warning

fix: qwen logger exit handler setup

packages/core/src/telemetry/qwen-logger/qwen-logger.ts

@@ -82,10 +82,12 @@ export class QwenLogger {
       return undefined;
     if (!QwenLogger.instance) {
       QwenLogger.instance = new QwenLogger(config);
+      process.on(
+        'exit',
+        QwenLogger.instance.shutdown.bind(QwenLogger.instance),
+      );
     }
 
-    process.on('exit', QwenLogger.instance.shutdown.bind(QwenLogger.instance));
-
     return QwenLogger.instance;
   }