From 5956f9b4aaf810fafb563c542c3ca3d3aca65561 Mon Sep 17 00:00:00 2001
From: David Newell <david@posthog.com>
Date: Wed, 1 Apr 2026 12:00:00 +0800
Subject: [PATCH] protect against no parent node (#1445)

* protect against a missing parent node during a mutation on an textNode
---
 .changeset/three-baboons-bow.md       | 5 +++++
 packages/rrweb/src/record/mutation.ts | 5 ++++-
 2 files changed, 9 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/three-baboons-bow.md

diff --git a/.changeset/three-baboons-bow.md b/.changeset/three-baboons-bow.md
new file mode 100644
index 00000000..4e419cc2
--- /dev/null
+++ b/.changeset/three-baboons-bow.md
@@ -0,0 +1,5 @@
+---
+'rrweb': patch
+---
+
+fix: protect against missing parentNode
diff --git a/packages/rrweb/src/record/mutation.ts b/packages/rrweb/src/record/mutation.ts
index 81592e81..f4267af3 100644
--- a/packages/rrweb/src/record/mutation.ts
+++ b/packages/rrweb/src/record/mutation.ts
@@ -441,7 +441,10 @@ export default class MutationBuffer {
       texts: this.texts
         .map((text) => {
           const n = text.node;
-          if ((n.parentNode as Element).tagName === 'TEXTAREA') {
+          if (
+            n.parentNode &&
+            (n.parentNode as Element).tagName === 'TEXTAREA'
+          ) {
             // the node is being ignored as it isn't in the mirror, so shift mutation to attributes on parent textarea
             this.genTextAreaValueMutation(n.parentNode as HTMLTextAreaElement);
           }