refactor: update @types/node for node version 14

src/cli.ts

@@ -90,10 +90,16 @@ async function onError(error: { code: string; syscall: string; }) {
  */
 function onListening() {
   const addr = server.address();
-  const bind = typeof addr === 'string'
-    ? `pipe  ${addr}`
+
+  if (addr !== null) {
+    const bind = typeof addr === 'string'
+    ? `pipe ${addr}`
     : `port ${addr.port}`;
-  Logger.ok(`Listening on ${bind}`);
+    Logger.ok(`Listening on ${bind}`);
+  } else {
+    // tslint:disable-next-line: no-floating-promises
+    Logger.error(`Failed to start binding`);
+  }
 }
 
 configureApp(app, {elasticsearch: Elasticsearch})