Merge pull request #17 from github/types-ts-add-window-declaration

Add TS window declaration for TabContainerElement

Author: keithamus

index.d.ts

@@ -1 +1,7 @@
 export default class TabContainerElement extends HTMLElement { }
+
+declare global {
+  interface Window {
+    TabContainerElement: typeof TabContainerElement
+  }
+}