import { SquidexClientConfiguration } from '../configuration';
import { HttpClient } from '../http';
/**
 * Handles authentication for Squidex requests
 */
export declare class AuthenticationManager {
    private readonly config;
    private readonly httpClient;
    private accessToken;
    private accessTokenExpiresOn;
    constructor(config: SquidexClientConfiguration, httpClient: HttpClient);
    /**
     * Authenticate with the Squidex server
     *
     * Resolves with the access token
     */
    authenticate(): Promise<string>;
    private requiresAuthentication;
}