/**
 * @fileoverview SEO Utility Functions
 *
 * This module provides utility functions for processing SEO data,
 * generating meta tags, and creating JSON-LD structured data.
 */
export * from './meta-tags';
export * from './structured-data';
export * from './content-analysis';
export * from './url-utils';
export * from './image-processing';
import { ExtendedSEO, SEOHeadProps, SEOResult, SEOConfig } from '../../types/seo';
import { SanityPost, SanityPage, SanitySiteSettings } from '../../types/sanity';
/**
 * Default SEO configuration
 */
export declare const DEFAULT_SEO_CONFIG: SEOConfig;
/**
 * Process SEO data and generate complete SEO result
 *
 * @param props - SEO Head component props
 * @param config - SEO configuration (optional, uses defaults)
 * @returns Complete SEO result with meta tags and structured data
 */
export declare function processSEO(props: SEOHeadProps, config?: Partial<SEOConfig>): SEOResult;
/**
 * Process and merge SEO data from multiple sources with proper fallbacks
 *
 * @param content - Content data
 * @param siteSettings - Site settings
 * @param customSEO - Custom SEO overrides
 * @param config - SEO configuration
 * @returns Processed SEO data
 */
export declare function processSEOData(content?: SanityPost | SanityPage | any, siteSettings?: SanitySiteSettings, customSEO?: ExtendedSEO, config?: SEOConfig): ExtendedSEO;
/**
 * Sanitize and validate SEO data
 *
 * @param seo - SEO data to sanitize
 * @returns Sanitized SEO data
 */
export declare function sanitizeSEO(seo: ExtendedSEO): ExtendedSEO;
/**
 * Check if a string is a valid URL
 *
 * @param url - URL string to validate
 * @returns Whether the URL is valid
 */
export declare function isValidURL(url: string): boolean;
/**
 * Generate SEO-friendly slug from text
 *
 * @param text - Text to convert to slug
 * @returns SEO-friendly slug
 */
export declare function generateSlug(text: string): string;
/**
 * Extract text content from portable text or HTML
 *
 * @param content - Content to extract text from
 * @param maxLength - Maximum length of extracted text
 * @returns Extracted text
 */
export declare function extractTextContent(content: any, maxLength?: number): string;
/**
 * Calculate estimated reading time for content
 *
 * @param content - Content to analyze
 * @param wordsPerMinute - Reading speed (default: 200 wpm)
 * @returns Estimated reading time in minutes
 */
export declare function calculateReadingTime(content: any, wordsPerMinute?: number): number;
//# sourceMappingURL=index.d.ts.map