/**
 * @description Normalised PDF document metadata (title, author, creator, producer).
 * Handles both the modern XMP `metadata` API and the legacy `info` dictionary
 * returned by pdfjs, so callers always receive a consistent shape regardless of
 * which metadata format the PDF uses.
 */
export default class Metadata {
    title?: string;
    creator?: string;
    producer?: string;
    author?: string;
    constructor(originalMetadata: {
        metadata?: {
            get(key: string): string | undefined;
        };
        info?: {
            Title?: string;
            Author?: string;
            Creator?: string;
            Producer?: string;
        };
    });
}