From ef1802472cf80e3ad86e19d21e93236e7a01b31b Mon Sep 17 00:00:00 2001
From: aadalbek <aadalbek@andrew.cmu.edu>
Date: Mon, 1 Sep 2025 18:07:02 +0300
Subject: [PATCH 1/2] Fix fib.ts style

---
 src/fib.ts | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/fib.ts b/src/fib.ts
index 8dc8ddd..2ba691a 100644
--- a/src/fib.ts
+++ b/src/fib.ts
@@ -1,12 +1,12 @@
-// util function that computes the fibonacci numbers
-module.exports = function fibonacci(n) {
+// util function that computes the Fibonacci numbers
+export function fibonacci(n: number): number {
   if (n < 0) {
     return -1;
-  } else if (n == 0) {
+  } else if (n === 0) {
     return 0;
-  } else if (n == 1) {
+  } else if (n === 1) {
     return 1;
   }
 
   return fibonacci(n - 1) + fibonacci(n - 2);
-};
+}

From 967c26d24e011e7d0788f4f22a899cb8cc678b1a Mon Sep 17 00:00:00 2001
From: aadalbek <aadalbek@andrew.cmu.edu>
Date: Mon, 1 Sep 2025 18:49:47 +0300
Subject: [PATCH 2/2] Fix: convert fibRoute.ts

---
 src/fibRoute.ts | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/src/fibRoute.ts b/src/fibRoute.ts
index 2d41ca5..c1a01d8 100644
--- a/src/fibRoute.ts
+++ b/src/fibRoute.ts
@@ -1,16 +1,23 @@
 // Endpoint for querying the fibonacci numbers
 
-const fibonacci = require("./fib");
+import { Router, Request, Response } from "express";
+import { fibonacci } from "./fib";
 
-export default (req, res) => {
-  const { num } = req.params;
+const router = Router();
 
-  const fibN = fibonacci(parseInt(num));
-  let result = `fibonacci(${num}) is ${fibN}`;
+router.get("/fib/:num", (req: Request, res: Response) => {
+  const num: number = parseInt(req.params.num, 10);
+
+  let result: string;
+  const fibN: number = fibonacci(num);
 
   if (fibN < 0) {
     result = `fibonacci(${num}) is undefined`;
+  } else {
+    result = `fibonacci(${num}) is ${fibN}`;
   }
 
   res.send(result);
-};
+});
+
+export default router;