import { AuthenticationType } from '../../enums/Authentication';
import { IAuthCookie } from '../../types/auth/AuthCookie';
import { IAuthCredential } from '../../types/auth/AuthCredential';
import { BrowserRettiwtConfig } from '../config/BrowserRettiwtConfig';
/**
 * Browser-compatible AuthCredential that doesn't depend on cookiejar.
 *
 * @internal
 */
export declare class BrowserAuthCredential implements IAuthCredential {
    authToken?: string;
    authenticationType?: AuthenticationType;
    cookies?: string;
    csrfToken?: string;
    guestToken?: string;
    /**
     * Creates a new BrowserAuthCredential from IAuthCookie.
     *
     * @param cookies - The authentication cookies from browser
     * @param guestToken - Optional guest token for guest authentication
     */
    constructor(cookies?: IAuthCookie, guestToken?: string);
    /**
     * Converts the credentials to HTTP headers.
     *
     * @returns The headers object for axios requests
     */
    toHeader(): Record<string, string>;
}
/**
 * Browser-compatible authentication service.
 * Uses atob/btoa instead of Node.js Buffer.
 *
 * @internal
 */
export declare class BrowserAuthService {
    /** The config object. */
    private readonly _config;
    /**
     * @param config - The browser config for Rettiwt.
     */
    constructor(config: BrowserRettiwtConfig);
    /**
     * Decodes the encoded cookie string using browser-native atob.
     *
     * @param encodedCookies - The encoded cookie string to decode.
     * @returns The decoded cookie string.
     */
    static decodeCookie(encodedCookies: string): string;
    /**
     * Encodes the given cookie string using browser-native btoa.
     *
     * @param cookieString - The cookie string to encode.
     * @returns The encoded cookie string.
     */
    static encodeCookie(cookieString: string): string;
    /**
     * Gets the user's id from the given API key.
     *
     * @param apiKey - The API key (base64 encoded cookie string).
     * @returns The user id associated with the API key.
     */
    static getUserId(apiKey: string): string | undefined;
    /**
     * Gets the user's id from the twid cookie value.
     *
     * @param twid - The twid cookie value.
     * @returns The user id.
     */
    static getUserIdFromTwid(twid: string): string | undefined;
    /**
     * Login to twitter as guest.
     *
     * @returns A new guest credential.
     */
    guest(): Promise<BrowserAuthCredential>;
}