import { SafeUrl } from '../../types';
interface UrlValidationOptions {
    httpsOnly?: boolean;
}
export declare function validateRawUrlInput(url: unknown): string;
/** Resolve caller or page-provided URL text against a page URL and allow HTTP(S) only. */
export declare function resolveHttpUrl(value: unknown, baseUrl: string): string | undefined;
/** Build the conventional root favicon URL without dropping a non-default port. */
export declare function getDefaultFaviconUrl(pageUrl: string): string;
/** Remove only the conventional leading www. host label. */
export declare function stripLeadingWww(hostname: string): string;
/**
 * Comprehensive URL validation with security checks.
 */
export declare function validateUrlInput(url: string, options?: UrlValidationOptions): string;
/**
 * Validate image URL with additional security checks.
 */
export declare function validateImageUrl(imageUrl: string): string;
/**
 * Validate and sanitize URL.
 */
export declare function sanitizeUrl(url: string): SafeUrl;
export {};