export interface IKeyValue {
    key: string;
    value: string;
}
export declare type TProtocol = string;
export declare type TDemand = string;
export declare type TClientId = string;
export declare type TQuery = {
    [key: string]: string;
};
export declare type TQueryArray = IKeyValue[];
export declare type TQuerysStorage = Map<TClientId, TQuery>;
export declare type TDemandsStorage = Map<TDemand, TQuerysStorage>;
export declare type TProtocolsStorage = Map<TProtocol, TDemandsStorage>;
export default class DemandsHolder {
    private _subscriptions;
    subscribe(protocol: string, demand: string, clientID: string, query: TQuery | TQueryArray): Error | boolean;
    unsubscribe(clientID: string, protocol: string, demand?: string): boolean;
    removeClient(clientID: string): void;
    clear(): void;
    get(protocol: string, demand: string, query: TQuery | TQueryArray): string[] | Error;
    getAll(protocol: string, demand: string): string[] | Error;
    getInfo(): string;
    private _isInclude;
    private _serialize;
}