import { StreamableFile } from '@nestjs/common';
/**
 * Controller responsible for serving the favicon.ico image.
 * The favicon is provided as a Base64-encoded ico image to avoid serving static files.
 */
export declare class FaviconController {
    private static readonly base64EncodedFavicon;
    /**
     * Streams the favicon image as an HTTP response.
     * Decodes the Base64 string into a buffer and returns it with the appropriate content type.
     *
     * @returns {StreamableFile} - The favicon ico image stream.
     */
    getFavicon(): StreamableFile;
}