export declare type TGroup = string;
export declare type TId = string;
export declare type THandler = (...args: any[]) => any;
export declare type THandlerEntity = {
    handler: THandler;
    created: number;
};
export declare type THolder = Map<TId, THandlerEntity>;
export declare type TStorage = Map<TGroup, THolder>;
export default class HandlersHolder {
    private _handlers;
    add(group: string, id: string, handler: THandler): boolean | Error;
    remove(group: string, id?: string): boolean | Error;
    get(group: string, id?: string): THandler | Map<string, THandler> | undefined;
    has(group: string, id: string): boolean;
    clear(): void;
    removeOlderThen(age: number): void;
    private _validate;
}