Method activate

packages/react-aria/src/dnd/DragManager.ts:686–699

(dropTarget: DropTarget | null, dropItem: DroppableItem | null | undefined)

  }

  activate(dropTarget: DropTarget | null, dropItem: DroppableItem | null | undefined): void {
    if (dropTarget && typeof dropTarget.onDropActivate === 'function') {
      let target = dropItem?.target ?? null;
      let rect = dropTarget.element.getBoundingClientRect();
      dropTarget.onDropActivate(
        {
          type: 'dropactivate',
          x: rect.left + rect.width / 2,
          y: rect.top + rect.height / 2
        },
        target
      );
    }
  }
}

function findValidDropTargets(options: DragTarget) {