Avoid calls to el.matches when on a leaf node, e.g. a <br/>

rrweb-io · Nov 15, 2023 · 1b37e33 · 1b37e33
1 parent d19e922
commit 1b37e33
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/packages/rrweb-snapshot/src/snapshot.ts b/packages/rrweb-snapshot/src/snapshot.ts
@@ -980,7 +980,9 @@ export function serializeNodeWithId(
   let { needsMask } = options;
   let { preserveWhiteSpace = true } = options;
 
-  if (!needsMask) {
+  if (!needsMask &&
+      n.childNodes  // we can avoid the check on leaf elements, as masking is applied to child text nodes only
+     ) {
     // perf: if needsMask = true, children won't also need to check
     const checkAncestors = needsMask === undefined; // if false, we've already checked ancestors
     needsMask = needMaskingText(