/**
 * Utility functions for handling images, including cross-origin image fetching
 */
import { type BatchProcessorConfig } from "./batchProcessor";
/**
 * Batch download tasks configuration
 */
export interface DownloadTask {
    /** URL to download */
    url: string;
    /** Filename for the downloaded file */
    filename: string;
    /** Optional index for tracking */
    index?: number;
}
/**
 * Converts an image URL to a blob with cross-origin support
 * @param imageUrl - The image URL to fetch
 * @param options - Additional options for fetching
 * @returns Promise that resolves to a blob or null if failed
 */
export declare function fetchImageAsBlob(imageUrl: string, options?: {
    withTimestamp?: boolean;
    filename?: string;
}): Promise<{
    blob: Blob;
    filename: string;
} | null>;
/**
 * Converts an image URL to a File object with cross-origin support
 * @param imageUrl - The image URL to fetch
 * @param filename - The filename for the resulting File object. Defaults to 'image.jpg'.
 * @param mimeType - The MIME type for the File object. Defaults to 'image/jpeg'.
 * @returns Promise that resolves to a File object or null if failed
 */
export declare function fetchImageAsFile(imageUrl: string, filename?: string, mimeType?: string): Promise<File | null>;
/**
 * Download multiple images in batches
 * @param tasks - Array of download tasks
 * @param imageDownloader - Function to download a single image
 * @param options - Batch processing options
 * @returns Promise that resolves to array of download results
 */
export declare function batchDownloadImages<T>(tasks: DownloadTask[], imageDownloader: (url: string, filename: string) => Promise<T>, options?: Omit<BatchProcessorConfig<DownloadTask, T>, "items" | "processor">): Promise<Array<T | null>>;