From 70b74a72915466c3808486003e1fd06aa660a661 Mon Sep 17 00:00:00 2001
From: Billy Vong <billyvg@users.noreply.github.com>
Date: Wed, 10 Jan 2024 13:16:10 -0330
Subject: [PATCH] fix: Protect against `matches()` being undefined (#154)

try/catch to protect against cases where `el.matches` is not a function
(not sure exact cause, but possibly `el` is undefined, or not an Element
type)
---
 packages/rrweb-snapshot/src/snapshot.ts | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/packages/rrweb-snapshot/src/snapshot.ts b/packages/rrweb-snapshot/src/snapshot.ts
index 7477f18a6d..67583f8555 100644
--- a/packages/rrweb-snapshot/src/snapshot.ts
+++ b/packages/rrweb-snapshot/src/snapshot.ts
@@ -350,17 +350,21 @@ export function createMatchPredicate(
     const el = node as HTMLElement;
     if (el === null) return false;
 
-    if (className) {
-      if (typeof className === 'string') {
-        if (el.matches(`.${className}`)) return true;
-      } else if (elementClassMatchesRegex(el, className)) {
-        return true;
+    try {
+      if (className) {
+        if (typeof className === 'string') {
+          if (el.matches(`.${className}`)) return true;
+        } else if (elementClassMatchesRegex(el, className)) {
+          return true;
+        }
       }
-    }
 
-    if (selector && el.matches(selector)) return true;
+      if (selector && el.matches(selector)) return true;
 
-    return false;
+      return false;
+    } catch {
+      return false;
+    }
   };
 }