import { useEffect } from "react" export default function IframeOverride() { useEffect(() => { const handleMessage = (event) => { if (event.data.type === "heightUpdate") { const frame = document.querySelector("iframe") if (frame) { frame.style.height = ${event.data.height}px } } } window.addEventListener("message", handleMessage) return () => window.removeEventListener("message", handleMessage) }, [])     return {} }