import { EntityType } from "../metadata";
import { Query } from "../elements";
export declare class QueryCache {
    private _queries;
    isCached<T>(query: Query<T>): boolean;
    merge<T>(query: Query<T>, payload?: any[]): void;
    reduce<T>(query: Query<T>): Query<T>;
    clear(entityType?: EntityType<any>): void;
    private _getQueries<T>(entityType);
    private _merge<T>(query);
    private _buildQueriesFromPayload(args);
}