#9048 Fix Avoid an excess DOM size error

GoogleChrome · May 29, 2019 · a5f9343 · a5f9343
1 parent ff4f486
commit a5f9343
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Showing 2 changed files with 14,993 additions and 10 deletions.
diff --git a/lighthouse-core/lib/page-functions.js b/lighthouse-core/lib/page-functions.js
@@ -113,18 +113,20 @@ function getElementsInDocument(selector) {
  */
 /* istanbul ignore next */
 function getOuterHTMLSnippet(element, ignoreAttrs = []) {
-  const clone = element.cloneNode();
-
-  ignoreAttrs.forEach(attribute =>{
-    clone.removeAttribute(attribute);
-  });
-
-  const reOpeningTag = /^[\s\S]*?>/;
-  const match = clone.outerHTML.match(reOpeningTag);
-
-  return (match && match[0]) || '';
+  try {
+    const clone = element.cloneNode();
+    ignoreAttrs.forEach(attribute =>{
+      clone.removeAttribute(attribute);
+    });
+    const reOpeningTag = /^[\s\S]*?>/;
+    const match = clone.outerHTML.match(reOpeningTag);
+    return (match && match[0]) || '';
+  } catch (error) {
+    return element.localName;
+  }
 }
 
+
 /**
  * Computes a memory/CPU performance benchmark index to determine rough device class.
  * @see https://docs.google.com/spreadsheets/d/1E0gZwKsxegudkjJl8Fki_sOwHKpqgXwt8aBAfuUaB8A/edit?usp=sharing