From 9fef046b7968db5fe82a21ebbce640c4d3928e45 Mon Sep 17 00:00:00 2001
From: Marc Durdin <marc@durdin.net>
Date: Wed, 1 Jun 2022 12:23:02 +1000
Subject: [PATCH] fix(web): crash in highlightKey when key.className is not a
 string

Fixes KEYMAN-WEB-X
---
 web/source/osk/visualKeyboard.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/web/source/osk/visualKeyboard.ts b/web/source/osk/visualKeyboard.ts
index 5b30c3641c..99cf62157d 100644
--- a/web/source/osk/visualKeyboard.ts
+++ b/web/source/osk/visualKeyboard.ts
@@ -1921,7 +1921,7 @@ namespace com.keyman.osk {
      **/
     highlightKey(key: KeyElement, on: boolean) {
       // Do not change element class unless a key
-      if(!key || (key.className == '') || (key.className.indexOf('kmw-key-row') >= 0)) return;
+      if(!key || (key.className == '') || (typeof key.className != 'string') || (key.className.indexOf('kmw-key-row') >= 0)) return;
 
       var classes=key.className, cs = ' kmw-key-touched';