import { CookieJar } from 'tough-cookie';
import { Logger } from '@servicenow/sdk-project';
export declare class UISession {
    private readonly logger?;
    readonly instanceUrl: string;
    readonly cookieJar: CookieJar;
    userToken: string;
    constructor(instance: string, logger?: Logger | undefined);
    private parseUserToken;
    private refreshUserToken;
    private instanceLogin;
    login(username: string, password: string): Promise<void>;
}