import { GraphNode, NodeDefinition, StatefulNodeType } from '../../types/graph';
import { DisposeRequest, OperationPathPart, QueryBuilder } from '../remote/utils/query-builder';
/**
 * An instance of the [[placeholder]] node.
 * See the [[placeholder]] documentation page to find out more.
 */
export interface PlaceholderNode extends GraphNode<'placeholder', PlaceholderNodeProperties, PlaceholderNodeState, PlaceholderNodeData> {
}
/**
 * A definition of the [[placeholder]] node.
 * See the [[placeholder]] documentation page to find out more.
 */
export interface PlaceholderNodeDefinition extends NodeDefinition<'placeholder', PlaceholderNodeProperties, PlaceholderNodeState, PlaceholderNodeData> {
}
export interface PlaceholderNodeProperties {
    path: Array<OperationPathPart>;
    queryBuilder: QueryBuilder;
}
export interface PlaceholderNodeState {
    results: {
        [operationHash: string]: NodeDefinition | undefined;
    };
    statefulNodes: {
        [operationHash: string]: NodeDefinition | undefined;
    };
}
export interface PlaceholderNodeData {
    disposeRequest: {
        [operationHash: string]: DisposeRequest | undefined;
    };
}
/**
 * An implementation of the [[placeholder]] node.
 * See the [[placeholder]] documentation to find out more.
 */
export declare const PlaceholderNodeType: StatefulNodeType<'placeholder', PlaceholderNodeProperties, PlaceholderNodeState, PlaceholderNodeData>;
/**
 * Creates a new instance of the [[placeholder]] node, which is used by the [[proxy]] to establish which nodes and
 * operations need to be subscribed from the remote instance of Muster.
 * @param queryBuilder
 * @param path
 */
export declare function placeholder(queryBuilder: QueryBuilder, path: Array<OperationPathPart>): PlaceholderNodeDefinition;
export declare function isPlaceholderNodeDefinition(value: NodeDefinition): value is PlaceholderNodeDefinition;