From 9dd93c52b077c59f719486fdaa7309884bb0c1b5 Mon Sep 17 00:00:00 2001
From: Bruno Windels <brunow@matrix.org>
Date: Thu, 10 Oct 2019 16:39:41 +0200
Subject: [PATCH] safeguard if the offsetnode is null when determining caret
 position

---
 src/editor/dom.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/editor/dom.js b/src/editor/dom.js
index 9073eb37a3..e82c3f70ca 100644
--- a/src/editor/dom.js
+++ b/src/editor/dom.js
@@ -92,6 +92,10 @@ function getSelectionOffsetAndText(editor, selectionNode, selectionOffset) {
 // gets the caret position details, ignoring and adjusting to
 // the ZWS if you're typing in a caret node
 function getCaret(node, offsetToNode, offsetWithinNode) {
+    // if no node is selected, return an offset at the start
+    if (!node) {
+        return new DocumentOffset(0, false);
+    }
     let atNodeEnd = offsetWithinNode === node.textContent.length;
     if (node.nodeType === Node.TEXT_NODE && isCaretNode(node.parentElement)) {
         const zwsIdx = node.nodeValue.indexOf(CARET_NODE_CHAR);