1 files changed, 6 insertions, 0 deletions
diff --git a/popperjs/package/lib/dom-utils/getNodeName.js.flow b/popperjs/package/lib/dom-utils/getNodeName.js.flow
new file mode 100644
index 0000000..72e5b81
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getNodeName.js.flow
@@ -0,0 +1,6 @@
+// @flow
+import type { Window } from '../types';
+
+export default function getNodeName(element: ?Node | Window): ?string {
+  return element ? (element.nodeName || '').toLowerCase() : null;
+}