export type Service = 'google' | 'duckduckgo' | 'bitwarden' | 'yandex' | 'fastmail' | 'nextdns' | 'iconHorse' | 'bimi' | 'iocium' | 'faviconis' | 'faviconim';
/**
 * Result returned by fetchFavicon including content and metadata.
 */
export interface FaviconResult {
    /** Source URL used to fetch the favicon/logo */
    url: string;
    /** Content-Type of the returned image */
    contentType: string | null;
    /** Raw image data as an ArrayBuffer */
    content: ArrayBuffer;
    /** HTTP response status */
    status: number;
}
/**
 * FaviconFetcher allows downloading favicons or BIMI logos from a hostname using known services.
 */
export declare class FaviconFetcher {
    private hostname;
    private options?;
    /**
     * @param hostname The domain name to fetch the favicon/logo for.
     * @param options Optional configuration including headers, iconHorse API key, and BIMI DNS settings.
     */
    constructor(hostname: string, options?: {
        /** API key for icon.horse Pro access (used only when service is 'iconHorse') */
        iconHorseApiKey?: string;
        /** Optional DNS-over-HTTPS server URL for BIMI lookups (defaults to Cloudflare) */
        dohServerUrl?: string;
        /** Optional custom headers to send with fetch (except protected headers like X-API-Key) */
        headers?: Record<string, string>;
        /** Optional enable or provide a CORS proxy prefix for browser fetch compatibility */
        useCorsProxy?: boolean | string;
    } | undefined);
    private static serviceUrls;
    /**
     * Fetches the favicon or BIMI logo for the configured hostname using the specified service.
     *
     * @param service The provider to use (default is 'google').
     * @returns A FaviconResult containing the image, status, and metadata.
     * @throws If the fetch fails or BIMI DNS record is missing/invalid.
     */
    fetchFavicon(service?: Service): Promise<FaviconResult>;
}