example3.jsx

export const SomeComponent = (props) => { 
    const [searchWorker, setSearchWorker] = useState();
  
    useEffect(() => {
        setSearchWorker(new SearchWorker());
        // subscribe to worker messages
        searchWorker.onmessage(...);
        // do something with the worker on component init
        searchWorker.postMessage(...);
    }, []);
}