add typescript to backend

backend/src/index.ts

@@ -0,0 +1,40 @@
+import express, { Express } from "express";
+import cors from "cors";
+import { PrismaClient } from "@prisma/client";
+import appRoutes from "./routes/appRoutes";
+
+const app: Express = express();
+const port = process.env.PORT || 3000;
+const prisma = new PrismaClient();
+
+function setupMiddleware(app: Express) {
+  app.use(cors());
+  app.use(express.json());
+  app.use("/api", appRoutes);
+}
+setupMiddleware(app);
+
+// Start server
+async function startServer() {
+  try {
+    app.listen(port);
+    console.log(`Server is running on http://localhost:${port}`);
+  } catch (error) {
+    console.error("Error starting the server:", error);
+  }
+}
+
+process.on("SIGINT", async () => {
+  try {
+    await prisma.$disconnect();
+    console.log("Prisma client disconnected");
+    process.exit(0);
+  } catch (error) {
+    console.error("Error disconnecting Prisma client:", error);
+    process.exit(1);
+  }
+});
+
+startServer();
+
+module.exports = { app, prisma };