From 8093ae97cad3f0d57fc6dd687392bfafd49a9e56 Mon Sep 17 00:00:00 2001
From: jcurtis <jamocurtis@gmail.com>
Date: Wed, 28 Feb 2018 10:12:00 -0400
Subject: [PATCH] Prevent crash by checking for undefined rowLayouts[key]

---
 src/SortableList.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/SortableList.js b/src/SortableList.js
index 69e93a0..9473e16 100644
--- a/src/SortableList.js
+++ b/src/SortableList.js
@@ -224,10 +224,10 @@ export default class SortableList extends Component {
       if (rowsLayouts) {
         if (horizontal) {
           location.x = nextX;
-          nextX += rowsLayouts[key].width;
+          nextX += rowsLayouts[key] ? rowsLayouts[key].width : 0;
         } else {
           location.y = nextY;
-          nextY += rowsLayouts[key].height;
+          nextY += rowsLayouts[key] ? rowsLayouts[key].height : 0;
         }
       }