add server folder with initial index.ts

server/index.ts

@@ -0,0 +1,19 @@
+import { createServer } from "http";
+
+import express from "express";
+import next, { NextApiHandler } from "next";
+
+const port= parseInt(process.env.PORT || "3000", 10);
+const dev = process.env.NODE_ENV !== "production";
+const nextApp= next({ dev });
+const nextHandler= nextApp.getRequestHandler();
+
+nextApp.prepare().then(async() =>{
+    const app= express();
+    const server= createServer(app);
+
+    app.all("*", (req, res) => nextHandler(req, res));
+    server.listen(port, () =>{
+        console.log(`Server is ready on ${port}`);
+    });
+});