import { INodeSource } from '../types';
export declare const useDndDrop: ({ graph, onAddNode, onValidateAddNode, }: {
    graph: any;
    onAddNode?: (item: any) => Promise<any>;
    onValidateAddNode?: (item: any) => Promise<string[] | undefined>;
}) => {
    dropRef: import("react-dnd").ConnectDropTarget;
};
export declare const useDndDrag: ({ nodeProps, graph, }: {
    graph: any;
    nodeProps: INodeSource;
}) => {
    genPreviewElement: () => Promise<void>;
    dragRef: import("react-dnd").ConnectDragSource;
};