export interface PageMetadata {
    title: string | null;
    description: string | null;
    author: string | null;
    published: string | null;
    favicon: string | null;
    image: string | null;
    canonical: string | null;
    siteName: string | null;
    type: string | null;
}
/**
 * Extract page metadata from raw HTML by parsing <meta>, <link>, and <title> tags.
 *
 * Supports standard meta tags, Open Graph properties, and article-specific
 * attributes. All relative URLs are resolved against the provided baseUrl.
 *
 * @param html - Raw HTML string to parse
 * @param baseUrl - Base URL for resolving relative URLs
 * @returns A PageMetadata object with extracted values (null for missing fields)
 */
export declare function extractMetadata(html: string, baseUrl: string): PageMetadata;
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