Initial commit

react/useAutoResize.ts

@@ -0,0 +1,20 @@
+import { useEffect, RefObject } from "react";
+import { App } from "../app";
+
+/**
+ * Custom hook that automatically reports size changes to the parent window.
+ *
+ * @param client - MCP UI client for sending size notifications
+ */
+export function useAutoResize(
+  app: App | null,
+  elementRef?: RefObject<HTMLElement | null>,
+) {
+  useEffect(() => {
+    if (!app) {
+      return;
+    }
+
+    return app.setupSizeChangeNotifications();
+  }, [app, elementRef]);
+}