Merge pull request #1185 from ktmouk/fix-root-node-ie11

Fix: IE11 does not support getRootNode
floating-ui · Oct 30, 2020 · 671f71e · 671f71e
2 parents 7cfd52d + 66b4ca6
commit 671f71e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/dom-utils/contains.js b/src/dom-utils/contains.js
@@ -9,7 +9,7 @@ export default function contains(parent: Element, child: Element) {
     return true;
   }
   // then fallback to custom implementation with Shadow DOM support
-  else if (isShadowRoot(rootNode)) {
+  else if (rootNode && isShadowRoot(rootNode)) {
     let next = child;
     do {
       if (next && parent.isSameNode(next)) {