diff --git a/deno/index.ts b/deno/index.ts
index 85ca257..53a5c69 100644
--- a/deno/index.ts
+++ b/deno/index.ts
@@ -1,23 +1,10 @@
+export function add(a: number, b: number): number {
+  return a + b;
+}
 
-const PORT = Deno.env.get("PORT") || 8000;
+// Learn more at https://docs.deno.com/runtime/manual/examples/module_metadata#concepts
+if (import.meta.main) {
+  console.log("Add 2 + 3 =", add(2, 3));
+}
 
-const handler = async (req: Request): Promise<Response> => {
-  const url = new URL(req.url);
-
-  if (url.pathname === "/") {
-    const greeting = Deno.env.get("GREETING") || "Hello from Deno 2!";
-    return new Response(greeting);
-  } else if (url.pathname === "/greet") {
-    const greeting = Deno.env.get("GREETING") || "Hello from Deno 2!";
-    return new Response(greeting);
-  } else {
-    return new Response("Not Found", { status: 404 });
-  }
-};
-
-// Error handling
-try {
-  Deno.serve({ port: Number(PORT) }, handler);
-} catch (err) {
-  console.error("Error starting the server:", err);
-}
\ No newline at end of file
+Deno.serve({ hostname: "0.0.0.0", port: 8000 }, () => new Response("Hello, world!"));
\ No newline at end of file