applyDrag.js

export const applyDrag = (arr, dragResult) => {
  const { removedIndex, addedIndex, payload } = dragResult;
  if (removedIndex === null && addedIndex === null) return arr;
const result = [...arr];
  let itemToAdd = payload;
if (removedIndex !== null) {
    itemToAdd = result.splice(removedIndex, 1)[0];
  }
if (addedIndex !== null) {
    result.splice(addedIndex, 0, itemToAdd);
  }
return result;
};