safe access iframe document

2021-02-18 11:59:41 +08:00
parent 1ad1e524e3
commit a591a53195
1 changed files with 8 additions and 1 deletions
--- a/src/snapshot.ts
+++ b/src/snapshot.ts
@@ -208,7 +208,14 @@ function onceIframeLoaded(
  }
  // document is loading
  let fired = false;
-  if (win.document.readyState !== 'complete') {
+
+  let readyState: DocumentReadyState;
+  try {
+    readyState = win.document.readyState;
+  } catch (error) {
+    return;
+  }
+  if (readyState !== 'complete') {
    const timer = setTimeout(() => {
      if (!fired) {
        listener();