import { GraphNode, GraphOperation, NodeDefinition, StatefulGraphNode, StatefulNodeDefinition, StatefulNodeType, UpdateCallback } from '../../../types/graph';
import { DisposeCallback } from '../../../utils/store';
import { SerializableQuerySetChild } from '../../graph/query-set';
import { RequestMetadata } from '../operations/request';
export interface BatchRequestsMiddlewareNode extends StatefulGraphNode<'batch-requests-middleware', BatchRequestsMiddlewareNodeProperties, BatchRequestsMiddlewareNodeState, BatchRequestsMiddlewareNodeData> {
}
export interface BatchRequestsMiddlewareNodeDefinition extends StatefulNodeDefinition<'batch-requests-middleware', BatchRequestsMiddlewareNodeProperties, BatchRequestsMiddlewareNodeState, BatchRequestsMiddlewareNodeData> {
}
export interface BatchRequestsMiddlewareNodeProperties {
}
export interface BatchRequestsMiddlewareNodeState {
    batcherResults: {
        [rootId: string]: NodeDefinition | undefined;
    };
}
export interface BatchRequestsMiddlewareNodeData {
    batchers: Map<string, RequestBatcher>;
}
export declare const BatchRequestsMiddlewareNodeType: StatefulNodeType<'batch-requests-middleware', BatchRequestsMiddlewareNodeProperties, BatchRequestsMiddlewareNodeState, BatchRequestsMiddlewareNodeData>;
export declare function batchRequestsMiddleware(): BatchRequestsMiddlewareNodeDefinition;
export declare type NodeDefinitionCallback = (value: NodeDefinition) => void;
export declare class RequestBatcher {
    private storeSubscribe;
    private next;
    private root;
    private activeRequests;
    private readonly responseBuilder;
    private latestChildren;
    constructor(storeSubscribe: StoreSubscribe, next: GraphNode, root: NodeDefinition, callback: NodeDefinitionCallback);
    dispose(): void;
    setRequest(children: Array<SerializableQuerySetChild>, metadata: RequestMetadata): void;
}
export declare type StoreSubscribe = (node: GraphNode, operation: GraphOperation, callback: UpdateCallback) => DisposeCallback;