/**
 * [WHO]: extractPdfPages
 * [FROM]: Depends on pdf-lib
 * [TO]: Consumed by ./read.ts for PDF page extraction
 * [HERE]: core/tools/pdf-extract.ts - extract specific pages from a PDF buffer
 */
/**
 * Extract specific pages from a PDF buffer and return a new PDF as base64.
 * Uses pdf-lib to copy selected pages into a new PDF document.
 */
export declare function extractPdfPages(pdfBuffer: Buffer, pageRange: string): Promise<string>;