diff --git a/typings/utils.d.ts b/typings/utils.d.ts
new file mode 100644
index 00000000..e1571f38
--- /dev/null
+++ b/typings/utils.d.ts
@@ -0,0 +1,2 @@
+import { INode } from './types';
+export declare function isElement(n: Node | INode): n is Element;