Function getDroppableCollectionId

packages/react-aria/src/dnd/utils.ts:37–44

(state: DroppableCollectionState)

export const DIRECTORY_DRAG_TYPE: symbol = Symbol();

export function getDroppableCollectionId(state: DroppableCollectionState): string {
  let {id} = droppableCollectionMap.get(state) || {};
  if (!id) {
    throw new Error('Droppable item outside a droppable collection');
  }

  return id;
}

export function getDroppableCollectionRef(
  state: DroppableCollectionState