Revert "revert CustomElements changes"

This reverts commit 3ca60a8.
googlearchive · Aug 2, 2014 · 53f7511 · 53f7511
1 parent 3ca60a8
commit 53f7511
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/src/CustomElements.js b/src/CustomElements.js
@@ -30,6 +30,19 @@ var hasNative = Boolean(document.registerElement);
 // other key related web components features.
 var useNative = !flags.register && hasNative && !window.ShadowDOMPolyfill && (!window.HTMLImports || HTMLImports.useNative);
 
+if (useNative) {
+  // FF doesn't store methods and properties after cloning
+  document.registerElement('check-cloning-element', {
+    prototype: Object.create(HTMLElement.prototype, {
+      test: { get: function() { return 1; } }
+    })
+  });
+
+  if (!document.createElement('check-cloning-element').cloneNode(true).test) {
+    useNative = false;
+  }
+}
+
 if (useNative) {
 
   // stub