feat: Initial clean release of CHM

packages/lib/hooks/dom/useDocument.ts

@@ -0,0 +1,15 @@
+import shim from '../../shim';
+
+
+// Returns the Document that contains [elementRef]. This is useful when a component
+// can be rendered in secondary windows and needs to access the component's container
+// document.
+const useDocument = (elementRef: Element|null) => {
+	const { useMemo } = shim.react();
+
+	return useMemo(() => {
+		return (elementRef ?? null)?.getRootNode() as Document|null;
+	}, [elementRef]);
+};
+
+export default useDocument;