suspenseDataHook.js

const useSuspenseQuery = options => {
  const [resource] = useState(() => new DataQueryingThingWithState());
  
  resource.readLatest(options); //will throw a promise if not ready
  
  useEffect(() => {
    return () => resource.current.dispose(); //never call in the side rendering / "parallel universe" tree :(
  }, []);
  
  return resource.current.state; // or whatever
};

i guess as the throw happens before useEffect, the callback might have not registered.

const useSuspenseQuery = options => {
  const resource = useRef(new DataQueryingThingWithState());
  
// before the throw
  useEffect(() => {
    return () => resource.current.dispose(); //never call in the side rendering / "parallel universe" tree :(
  }, []);

  resource.readLatest(options); //will throw a promise if not ready
};