Hot reload server

See: vitest-dev/vitest#2792

env.d.ts

@@ -0,0 +1 @@
+/// <reference types="vite/client" />

index.ts

@@ -10,6 +10,12 @@ app.get('/', (req: Request, res: Response) => {
   res.send('Hello World!');
 });
 
-app.listen(port, () => {
+const server = app.listen(port, () => {
   console.log(`Example app listening on port ${port}`);
-});
+});
+
+if (import.meta.hot) {
+  import.meta.hot.on("vite:beforeFullReload", () => {
+    server.close();
+  });
+}

package.json

@@ -4,7 +4,7 @@
   "description": "",
   "main": "index.ts",
   "scripts": {
-    "start": "vite-node .",
+    "start": "vite-node --watch index.ts",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "keywords": [],