The code below is a simplified example of my problem. There is a lot more going on in the actual codebase, so let's just assume that my useHook function must be asynchronous and we cannot just fetch the data inside the useEffect hook.
It currently renders {}, but I want it to render "Data to be displayed"
const fetch = async () => {
/* This code can't be changed */
return "Data to be displayed"
}
const useFetch = async () => { // This function must be asynchronous
let data = await fetch();
return data;
};
const App = () => {
const data = useFetch();
const [state, setState] = useState(data);
useEffect(() => {
setState(data);
}, [data]);
return <h1>{JSON.stringify(state)}</h1>
}
export default App;
change
const data = useFetch(); to const data = await useFetch();
Move called inside the useEffect like this:
const App = () => {
const [state, setState] = useState({});
useEffect(() => {
const fetchData = async () => {
const data = await useFetch();
setState(data);
}
fetchData()
}, []); // [] load first time
return <h1>{JSON.stringify(state)}</h1>
}