import { MediaCategory, DetectOptions } from './types';
/**
 * Fetches a Blob from a URL.
 * @param url - The URL of the resource to fetch.
 * @returns A Promise that resolves to a Blob.
 * @throws Error if the fetch fails or the response is invalid.
 */
export declare function urlToBlob(url: string): Promise<Blob>;
/**
 * Detects the category of a file Blob (e.g., image, video, document, etc.)
 */
export declare const detectMediaCategory: (blob: Blob, options?: DetectOptions) => Promise<MediaCategory>;
/**
 * Downloads a file from a URL and detects its media category.
 * @param url - The file URL.
 * @param options - Optional detection settings.
 * @returns The detected media category.
 */
export declare const getBlobAndDetectCategory: (url: string, options?: DetectOptions, detectFn?: typeof detectMediaCategory) => Promise<MediaCategory | undefined>;