express.js setup

apps/server/src/app.ts

@@ -0,0 +1,12 @@
+import express, { Request, Response } from 'express';
+
+const app = express();
+const port = 3000;
+
+app.get('/', (req: Request, res: Response) => {
+  res.send('Hello World!');
+});
+
+app.listen(port, () => {
+  console.log(`Example app listening on port ${port}`);
+});