import { SecurityConfig } from './types';
/**
 * Interface for reCAPTCHA response
 */
export interface ReCaptchaResponse {
    success: boolean;
    score: number;
    action: string;
    challenge_ts: string;
    hostname: string;
    'error-codes'?: string[];
}
/**
 * Load the reCAPTCHA script dynamically
 */
export declare const loadReCaptchaScript: (siteKey: string) => Promise<void>;
/**
 * Execute reCAPTCHA and get a token
 */
export declare const executeReCaptcha: (siteKey: string, action?: string) => Promise<string>;
/**
 * Verify reCAPTCHA token on the server or via proxy
 */
export declare const verifyReCaptchaToken: (token: string, secretKey?: string, proxyEndpoint?: string, expectedAction?: string, minScore?: number) => Promise<{
    valid: boolean;
    score?: number;
    error?: string;
}>;
/**
 * Check if reCAPTCHA is enabled in security config
 */
export declare const isReCaptchaEnabled: (security?: SecurityConfig) => boolean;
declare global {
    interface Window {
        grecaptcha: {
            ready: (callback: () => void) => void;
            execute: (widgetIdOrSiteKey: number | string, options?: {
                action: string;
            }) => Promise<string>;
            render: (container: string | HTMLElement, parameters: {
                sitekey: string;
                callback?: string;
                size?: string;
                badge?: string;
                action?: string;
            }) => number;
            reset: (widgetId?: number) => void;
            getResponse: (widgetId?: number) => string;
        };
    }
}