chore: add comment

Author: aralroca

src/index.ts

@@ -1,3 +1,7 @@
+/// <reference no-default-lib="true" />
+/// <reference lib="esnext" />
+/// <reference lib="dom" />
+/// <reference lib="dom.iterable" />
 /**
  * This file contains a diffing algorithm that is used to update the DOM
  * inspired by the set-dom library https://github.com/DylanPiercey/set-dom