declare class Session {
    constructor();
    appToken: string;
    state: {
        error: null | Error;
        errorTime: Date;
        errorMaxAge: number;
        accessToken: null | string;
        accessTokenTime: Date;
        accessTokenMaxAge: number;
    };
    promise: Promise<string> | null;
    init(): void;
    get origin(): string;
    get workerData(): any;
    fetchAccessToken: () => Promise<any>;
    getAccessToken: () => Promise<string>;
}
export declare const session: Session;
export {};