Function getDroppableCollectionRef

packages/react-aria/src/dnd/utils.ts:46–55

(
  state: DroppableCollectionState
)

}

export function getDroppableCollectionRef(
  state: DroppableCollectionState
): RefObject<HTMLElement | null> {
  let {ref} = droppableCollectionMap.get(state) || {};
  if (!ref) {
    throw new Error('Droppable item outside a droppable collection');
  }

  return ref;
}

export function getTypes(items: DragItem[]): Set<string> {
  let types = new Set<string>();