From 3c8f0cd89b8296f242773def2f729299020310fb Mon Sep 17 00:00:00 2001
From: Neil Jenkins <neil@nmjenkins.com>
Date: Tue, 23 Jul 2024 14:16:36 +1000
Subject: [PATCH] Fix crash extracting contents of range

endContainer can be null here.
---
 source/range/InsertDelete.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/range/InsertDelete.ts b/source/range/InsertDelete.ts
index c443bf9..f6f34d4 100644
--- a/source/range/InsertDelete.ts
+++ b/source/range/InsertDelete.ts
@@ -134,7 +134,7 @@ const extractContentsOfRange = (
     }
 
     // Merge text nodes if adjacent
-    node = endContainer.previousSibling;
+    node = endContainer && endContainer.previousSibling;
     if (node && node instanceof Text && endContainer instanceof Text) {
         endOffset = node.length;
         node.appendData(endContainer.data);