import { ErrorNode, ErrorNodeDefinition } from '../nodes/graph/error';
import { NilNode, NilNodeDefinition } from '../nodes/graph/nil';
import { OkNode, OkNodeDefinition } from '../nodes/graph/ok';
import { QuoteNode, QuoteNodeDefinition } from '../nodes/graph/quote';
import { ValueNode, ValueNodeDefinition } from '../nodes/graph/value';
import { GraphNode, NodeDefinition } from '../types/graph';
export declare type DataNode = ValueNode<any> | OkNode | NilNode | QuoteNode | ErrorNode;
export declare type DataNodeDefinition = ValueNodeDefinition<any> | OkNodeDefinition | NilNodeDefinition | QuoteNodeDefinition | ErrorNodeDefinition;
export declare function isDataNode(value: GraphNode): value is DataNode;
export declare function isDataNode(value: NodeDefinition): value is DataNodeDefinition;
export declare function isDataNode(value: NodeDefinition | GraphNode): value is DataNodeDefinition | DataNode;
export declare function valueOf(node: NodeDefinition | GraphNode): any;