export declare class AlphaSessionData {
    private static readonly rememberMeFieldName;
    private static readonly accessTokenFieldName;
    private static readonly receptionTsFieldName;
    private static readonly expirationTsFieldName;
    rememberMe: boolean;
    accessToken: string;
    /** timestamp of token reception in ms */
    receptionTs: number;
    /** timestamp of token expiration in ms */
    expirationTs: number;
    get isExpiredOrExpiring(): boolean;
    constructor(rememberMe: boolean, accessToken: string, receptionTs: number, // timestamp of token reception in ms
    expirationTs: number);
    static getTimestamps(expiresIn: number): {
        receptionTs: number;
        expirationTs: number;
    };
    static retrieve(): AlphaSessionData | null;
    static clear(): void;
    store(): void;
}