import { MergePdfsOptions } from '../types.js';
/**
 * Merge multiple PDF buffers into a single PDF
 */
export declare function mergePdfs(pdfBuffers: Buffer[], options?: MergePdfsOptions): Promise<Buffer>;
/**
 * Merge PDF files from file paths
 */
export declare function mergePdfFiles(filePaths: string[], options?: MergePdfsOptions): Promise<Buffer>;
/**
 * Analyze PDF buffers without merging
 */
export declare function analyzePdfs(pdfBuffers: Buffer[], options?: MergePdfsOptions): Promise<{
    totalChunks: number;
    totalPages: number;
    totalSize: number;
    chunkInfo: Array<{
        index: number;
        pages: number;
        sizeKB: number;
        valid: boolean;
        error?: string;
    }>;
}>;
/**
 * Validate PDF buffers
 */
export declare function validatePdfs(pdfBuffers: Buffer[], options?: MergePdfsOptions): Promise<{
    valid: boolean;
    errors: Array<{
        chunkIndex: number;
        error: string;
    }>;
}>;
/**
 * Split a PDF into individual page buffers
 */
export declare function splitPdf(pdfBuffer: Buffer, options?: MergePdfsOptions): Promise<Buffer[]>;
/**
 * Extract specific pages from a PDF
 */
export declare function extractPages(pdfBuffer: Buffer, pageIndices: number[], options?: MergePdfsOptions): Promise<Buffer>;
/**
 * Get information about a PDF
 */
export declare function getPdfInfo(pdfBuffer: Buffer, options?: MergePdfsOptions): Promise<{
    pages: number;
    sizeKB: number;
    title?: string;
    author?: string;
    creator?: string;
    producer?: string;
    creationDate?: Date;
    modificationDate?: Date;
}>;
/**
 * Merge PDFs with custom page ranges
 */
export declare function mergePdfsWithRanges(inputs: Array<{
    buffer: Buffer;
    pages?: number[];
    startPage?: number;
    endPage?: number;
}>, options?: MergePdfsOptions): Promise<Buffer>;
/**
 * Batch merge multiple sets of PDFs
 */
export declare function batchMergePdfs(batches: Buffer[][], options?: MergePdfsOptions & {
    concurrency?: number;
    batchNames?: string[];
}): Promise<Buffer[]>;
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