import type { Logger } from '@servicenow/sdk-project';
import { CookieJar } from 'tough-cookie';
export type Creds = {
    instanceUrl: string;
    type: 'basic';
    username: string;
    password: string;
} | {
    instanceUrl: string;
    type: 'oauth';
    access_token: string;
    token_type: string;
    refresh_token: string;
    expires_at: number;
};
export type UserSession = {
    instanceUrl: string;
    type: 'basic';
    userToken?: string;
    cookie?: CookieJar;
};
export type AccessToken = {
    instanceUrl: string;
    type: 'oauth';
    access_token: string;
    token_type: string;
};
export type SessionOrToken = UserSession | AccessToken;
export declare function getSessionToken(creds: Creds, logger?: Logger): Promise<SessionOrToken | undefined>;
export declare function getUserSession(creds: Creds, logger?: Logger): Promise<UserSession | undefined>;