fix(server): clean sigint handler on shutdown

Author: cdcabrera

src/server.ts

@@ -129,6 +129,7 @@ const runServer = async (options: ServerOptions = getOptions(), {
   let transport: StdioServerTransport | null = null;
   let httpHandle: HttpServerHandle | null = null;
   let unsubscribeServerLogger: (() => void) | null = null;
+  let sigintHandler: (() => void) | null = null;
   let running = false;
   let onLogSetup: ServerOnLog = () => () => {};
 
@@ -144,6 +145,11 @@ const runServer = async (options: ServerOptions = getOptions(), {
         httpHandle = null;
       }
 
+      if (sigintHandler) {
+        process.off('SIGINT', sigintHandler);
+        sigintHandler = null;
+      }
+
       log.debug('...closing Server');
       await server?.close();
       running = false;
@@ -246,10 +252,11 @@ const runServer = async (options: ServerOptions = getOptions(), {
           })));
     });
 
-    if (enableSigint) {
-      process.on('SIGINT', () => {
+    if (enableSigint && !sigintHandler) {
+      sigintHandler = () => {
         void stopServer();
-      });
+      };
+      process.on('SIGINT', sigintHandler);
     }
 
     if (options.isHttp) {