import { type CompactPageLines, type CompactPdfLine, type CompactPdfWord, type PageLines, type PageTexts, type PageToonLines, type PdfCompactLineAlgorithm, type PdfLine, type PdfScannedThreshold, type PdfWord } from "../pdf.interface.js";
/**
 * Platform-agnostic base class containing all shared PDF processing logic.
 * Both Node.js and web implementations extend this class.
 */
export declare class BasePdfReaderCommon {
    protected sortTextContent(texts: PdfWord[]): PdfWord[];
    protected sortTextContentSimple(texts: PdfWord[]): PdfWord[];
    protected removeFakeBold(texts: PdfWord[]): PdfWord[];
    protected getLinesFromTextsCommon(pageTexts: PageTexts, startIndex?: number): PageLines;
    protected getLines(words?: PdfWord[]): PdfLine[];
    protected mergeLines(lines: PdfWord[][]): PdfLine[];
    protected getCompactLines(words?: CompactPdfWord[]): CompactPdfLine[];
    protected mergeCompactLines(lines: CompactPdfWord[][]): CompactPdfLine[];
    protected getCompactLinesOldAlgorithm(words?: CompactPdfWord[]): CompactPdfLine[];
    protected mergeCompactLinesOldAlgorithm(lines: CompactPdfWord[][]): CompactPdfLine[];
    getCompactLinesFromTextsCommon(pageTexts: PageTexts, algorithm?: PdfCompactLineAlgorithm, startIndex?: number): CompactPageLines;
    protected mapWordsToCompactWords(words?: PdfWord[]): CompactPdfWord[];
    protected isScannedCommon(pageTexts: PageTexts, options?: PdfScannedThreshold, startIndex?: number): boolean;
    protected normalizedText(str: string): string;
    protected isPageScannedCommon(pageText: string, options?: PdfScannedThreshold): boolean;
    protected getToonWords(pdfWords: PdfWord[], enableToon: boolean): string;
    protected getLinesFromTextsInToonCommon(pageTexts: PageTexts, startIndex?: number): PageToonLines;
}