import type { BlobEnsureOptions } from '../types';
/**
 * Ensure the blob is valid and meets the specified requirements.
 *
 * @param blob The blob to check
 * @param options The options to check against
 * @param options.maxSize The maximum size of the blob (e.g. '1MB')
 * @param options.types The allowed types of the blob (e.g. ['image/png', 'application/json', 'video'])
 *
 * @throws If the blob does not meet the requirements
 */
export declare function ensureBlob(blob: Blob, options?: BlobEnsureOptions): void;