feat: gracefully and force shutdown

Author: alexander-akait

lib/Server.js

@@ -1114,11 +1114,26 @@ class Server {
     if (this.options.setupExitSignals) {
       const signals = ["SIGINT", "SIGTERM"];
 
+      let needForceShutdown = false;
+
       signals.forEach((signal) => {
         process.on(signal, () => {
-          this.stopCallback(() => {
+          if (needForceShutdown) {
             // eslint-disable-next-line no-process-exit
             process.exit();
+          }
+
+          this.logger.info(
+            "Gracefully shutting down. To force exit, press ^C again. Please wait..."
+          );
+
+          needForceShutdown = true;
+
+          this.stopCallback(() => {
+            this.compiler.close(() => {
+              // eslint-disable-next-line no-process-exit
+              process.exit();
+            });
           });
         });
       });