add type definitions file

Author: szaleq

index.d.ts

@@ -0,0 +1,8 @@
+export default responsiveEmbeds;
+declare function responsiveEmbeds(
+	items: string | HTMLElement | NodeList,
+	params?: {
+		watch?: boolean | string | HTMLElement;
+		wrapClass?: string;
+	}
+): void;