From fd8acfcaa39499a54bc4eab030ac3ab58632e56f Mon Sep 17 00:00:00 2001
From: Jonathan Bruce <jbruce232@gmail.com>
Date: Wed, 24 Jul 2019 16:57:17 -0400
Subject: [PATCH] Clamp remove value to 0

If the message array length equals 0, the second slice param becomes -1 which refills the messages array up to the first index.
---
 src/exercises/05.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/exercises/05.js b/src/exercises/05.js
index 9dbbe1d2..4f7d429f 100644
--- a/src/exercises/05.js
+++ b/src/exercises/05.js
@@ -60,7 +60,7 @@ function Usage() {
   const addMessage = () =>
     setMessages(allMessages.slice(0, messages.length + 1))
   const removeMessage = () =>
-    setMessages(allMessages.slice(0, messages.length - 1))
+    setMessages(allMessages.slice(0, Math.max(0, messages.length - 1)))
 
   return (
     <div>