import { Service } from '../common';
import { Session } from './classes';
import { SessionOptions } from './interfaces';
export declare class SessionService extends Service {
    private readonly storage;
    private session;
    constructor(options?: SessionOptions);
    get headers(): {
        [key: string]: any;
    };
    get sessionTtl(): number;
    verifySession(): Promise<void>;
    refreshSession(): Promise<void>;
    createSession(ttl?: number, fcmToken?: string): Promise<Session>;
    protected onInit(): void;
    private storeSession;
    private restoreSession;
}