import { DocumentType, DocumentInfo } from './types';
/**
 * Detect document type from URL or file extension
 */
export declare function detectDocumentType(url: string): DocumentType;
/**
 * Detect document type from content-type header
 */
export declare function detectDocumentTypeFromContentType(contentType: string): DocumentType;
/**
 * Async document type detection using content-type header
 */
export declare function detectDocumentTypeAsync(url: string, proxyUrl?: string): Promise<DocumentType>;
/**
 * Extract file extension from URL (segment-aware and parameters-safe)
 */
export declare function getFileExtension(url: string): string;
/**
 * Extract filename from URL
 */
export declare function getFileName(url: string): string;
/**
 * Format file size in human readable format
 */
export declare function formatFileSize(bytes: number): string;
/**
 * Check if document type supports pagination
 */
export declare function supportsPagination(type: DocumentType): boolean;
/**
 * Check if document type supports zoom
 */
export declare function supportsZoom(type: DocumentType): boolean;
/**
 * Check if document type supports rotation
 */
export declare function supportsRotation(type: DocumentType): boolean;
/**
 * Check if URL string is valid
 */
export declare function isValidUrl(url: string): boolean;
/**
 * Create download link for a document
 */
export declare function downloadDocument(url: string, filename?: string): Promise<void>;
/**
 * Enter fullscreen mode
 */
export declare function enterFullscreen(element: HTMLElement): Promise<void>;
/**
 * Exit fullscreen mode
 */
export declare function exitFullscreen(): Promise<void>;
/**
 * Check if currently in fullscreen mode
 */
export declare function isFullscreen(): boolean;
/**
 * Check if a URL is external (not from the same origin)
 */
export declare function isExternalUrl(url: string): boolean;
/**
 * Apply a CORS proxy to an external URL
 */
export declare function applyCorsProxy(url: string, proxyIndex?: number): string;
/**
 * Try loading a URL through different CORS proxies
 */
export declare function tryLoadWithProxy(url: string, customProxyUrl?: string): Promise<string>;
/**
 * Create a blob URL from a data URL
 */
export declare function createBlobFromDataUrl(dataUrl: string): string | null;
/**
 * Revoke a blob URL to prevent memory leaks
 */
export declare function revokeBlobUrl(url: string): void;
/**
 * Get document info from URL
 */
export declare function getDocumentInfo(url: string, type: DocumentType): DocumentInfo;
/**
 * Debounce function for performance optimization
 */
export declare function debounce<T extends (...args: any[]) => any>(func: T, wait: number): (...args: Parameters<T>) => void;
/**
 * Throttle function for performance optimization
 */
export declare function throttle<T extends (...args: any[]) => any>(func: T, limit: number): (...args: Parameters<T>) => void;