From 889068a09f285bc67a6fe8c5762c341bd303def8 Mon Sep 17 00:00:00 2001
From: Roman Shterenzon <roman.shterenzon@gmail.com>
Date: Wed, 23 Sep 2020 11:43:45 +0300
Subject: [PATCH] Don't modify the original container while doing removeCard

If card.container == cards, then cards.length will change.
Ensure that we're iterating over a copy.
---
 cards.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cards.js b/cards.js
index 387191c..ac523ef 100644
--- a/cards.js
+++ b/cards.js
@@ -182,6 +182,7 @@ var cards = (function() {
     },
 
     addCards: function(cards) {
+      cards = cards.slice();
       for (var i = 0; i < cards.length; i++) {
         var card = cards[i];
         if (card.container) {