/**
 * Loads a PDF document using pdf.js library
 * @param filePath Path to the PDF file
 * @returns Promise resolving to the loaded PDF document
 */
export declare function loadPdfWithPdfjs(filePath: string): Promise<import("pdfjs-dist/types/src/display/api").PDFDocumentProxy>;
/**
 * Extracts text from the specified pages of a PDF document
 * @param pdfDocument The PDF document loaded with pdf.js
 * @param pageNumbers Array of page numbers to extract text from (1-based indexing)
 * @returns Promise resolving to an array of objects with page number and extracted text
 */
export declare function extractTextFromPages(pdfDocument: any, pageNumbers?: number[]): Promise<{
    page: number;
    text: string;
}[]>;
interface PDFMetadata {
    fileName: string;
    fileSize: string;
    pageCount: number;
    author: string;
    creationDate: string;
    modificationDate: string;
    keywords: string[];
}
interface ExtractedTable {
    rows: string[][];
    pageNumber: number;
}
interface ExtractedText {
    page: number;
    text: string;
}
export declare class PDFService {
    static extractText(filePath: string, pageNumbers?: number[]): Promise<ExtractedText[]>;
    /**
     * Extracts tables from a PDF document
     * @param filePath Path to the PDF file
     * @param pageNumbers Optional specific pages to extract from
     * @returns Array of extracted tables
     */
    static extractTables(filePath: string, pageNumbers?: number[]): Promise<ExtractedTable[]>; /**
     * Gets metadata from a PDF document
     * @param filePath Path to the PDF file
     * @returns The document metadata
     */
    static getMetadata(filePath: string): Promise<PDFMetadata>; /**
     * Analyzes a PDF document
     * @param filePath Path to the PDF file
     * @param analysisType Type of analysis to perform
     * @returns Analysis results
     */
    static analyzeDocument(filePath: string, analysisType: 'structure' | 'content' | 'images' | 'classification'): Promise<any>;
}
export {};