/**
 * Core PDF screenshot functionality
 * Accepts pre-loaded PdfDocument to avoid duplicate loading
 */
import { PdfDocument } from './PdfDocument.js';
import type { ScreenshotOptions, ScreenshotResult } from '../types/screenshot.types.js';
import type { PdfDecomposerState, PdfDecomposerError } from '../types/decomposer.types.js';
/**
 * Generate screenshots for PDF pages using pre-loaded PdfDocument
 * Optimized for memory efficiency on large documents
 *
 * @param pdfDocument Pre-loaded PdfDocument instance
 * @param options Optional configuration for screenshot generation
 * @param progressCallback Optional callback for progress updates
 * @param errorCallback Optional callback for error notifications
 * @returns Promise resolving to ScreenshotResult object
 */
export declare function pdfScreenshot(pdfDocument: PdfDocument, options?: ScreenshotOptions, progressCallback?: (state: PdfDecomposerState) => void, errorCallback?: (error: PdfDecomposerError) => void): Promise<ScreenshotResult>;
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