From 5ecbc5124ae1308878d3fe41b1dae667d511e33f Mon Sep 17 00:00:00 2001
From: Codefix Runner <runner@codefix.local>
Date: Wed, 10 Jun 2026 15:50:31 +0800
Subject: [PATCH] Fix: The sum function returns the wrong value. Fix the
 implementation so npm test passes.

---
 src/sum.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sum.js b/src/sum.js
index db130c7..506a413 100644
--- a/src/sum.js
+++ b/src/sum.js
@@ -1,3 +1,3 @@
 export function sum(a, b) {
-  return a - b;
+  return a + b;
 }