diff --git a/ts/index.ts b/ts/index.ts
index f6af353..6beab94 100644
--- a/ts/index.ts
+++ b/ts/index.ts
@@ -1 +1,9 @@
+// compatibility
+declare global {
+  interface Element { }
+  interface Node { }
+  interface NodeListOf<TNode = Node> { }
+}
+
+// normal
 export * from './smartpdf.classes.smartpdf';