import { NodeDefinition, NodeLike } from '../types/graph';
export interface RootAndPath {
    root: NodeDefinition;
    path: Array<NodeDefinition>;
}
export declare function isRootAndPath(value: any): value is RootAndPath;
export declare function ref(rootAndPath: RootAndPath): NodeDefinition;
export declare function ref(path: Array<NodeLike>): NodeDefinition;
export declare function ref(...path: Array<NodeLike>): NodeDefinition;