Don't set up observer in ShadyDOM

It won't be used
Polymer · Nov 7, 2018 · 08bc1ff · 08bc1ff
1 parent d290be9
commit 08bc1ff
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/lib/mixins/dir-mixin.js b/lib/mixins/dir-mixin.js
@@ -84,10 +84,12 @@ function takeRecords() {
  */
 export const DirMixin = dedupingMixin((base) => {
 
-  if (!observer) {
-    getRTL();
-    observer = new MutationObserver(updateDirection);
-    observer.observe(document.documentElement, {attributes: true, attributeFilter: ['dir']});
+  if (!SHIM_SHADOW) {
+    if (!observer) {
+      getRTL();
+      observer = new MutationObserver(updateDirection);
+      observer.observe(document.documentElement, {attributes: true, attributeFilter: ['dir']});
+    }
   }
 
   /**