export declare type Token = {
    token: string;
    timestamp: number;
};
export declare class Tokens {
    private _tokenLife;
    private _tokens;
    constructor(tokenLife: number);
    set(clientId: string): string;
    get(clientId: string): string | null;
    generateClientGuid(): string;
    getClientId(token: string): string | null;
    isActual(clientId: string): boolean;
}