batch-initial-code.js

import { useCallback, useMemo, useState } from "react";
import { useDebouncedCallback } from "use-debounce/lib";

export const DEBOUNCED_BATCH_TIMEOUT = 500;

function hasPendingUpdates(batchUpdates) {
  return Object.keys(batchUpdates).length > 0;
}

export function usePhotos({ photos: initialPhotos = [], onUpdate }) {
  const [photos, setPhotos] = useState(initialPhotos);
  const [pendingUpdates, setPendingUpdates] = useState({});

  const performUpdates = useDebouncedCallback(
    async () => {},
    DEBOUNCED_BATCH_TIMEOUT,
    { maxWait: 2500 }
  );

  const updatePhotos = useCallback((itemsUpdates) => {}, []);

  const currentPhotos = useMemo(() => {}, []);

  return {
    updatePhotos,
    pendingUpdates,
    photos: currentPhotos,
  };
}