/**
 * Bearer Token and Basic Authentication Providers
 *
 * Handles generic bearer token and HTTP Basic Authentication.
 *
 * P0 Feature: Native browser Basic Auth popup (WWW-Authenticate headers)
 * - useNativePopup: true uses Playwright's httpCredentials for browser popup
 * - useNativePopup: false (default) uses Authorization header
 */
import { AuthProvider, AuthResult, BearerAuthConfig, BasicAuthConfig } from './index.js';
/**
 * Bearer Token Authentication Provider
 */
export declare class BearerProvider implements AuthProvider<BearerAuthConfig> {
    readonly type: "bearer";
    authenticate(config: BearerAuthConfig): Promise<AuthResult>;
    clear(config: BearerAuthConfig): Promise<void>;
    validate(config: BearerAuthConfig): Promise<boolean>;
    private getCacheKey;
}
/**
 * Basic Authentication Provider
 *
 * P0: Supports both header-based and native browser popup authentication
 */
export declare class BasicAuthProvider implements AuthProvider<BasicAuthConfig> {
    readonly type: "basic";
    authenticate(config: BasicAuthConfig): Promise<AuthResult>;
    clear(config: BasicAuthConfig): Promise<void>;
    validate(config: BasicAuthConfig): Promise<boolean>;
    private getCacheKey;
}