/**
 * Checks whether this browser supports Object Urls. If not, calls to
 * createObjectUrl and revokeObjectUrl will result in an error.
 *
 * @return {boolean} True if this browser supports Object Urls.
 */
export function browserSupportsObjectUrls(): boolean;
/**
 * @license
 * Copyright The Closure Library Authors.
 * SPDX-License-Identifier: Apache-2.0
 */
/**
 * @fileoverview Wrapper for URL and its createObjectUrl and revokeObjectUrl
 * methods that are part of the HTML5 File API.
 */
/**
 * Creates a blob URL for a blob object.
 * Throws an error if the browser does not support Object Urls.
 *
 * @param {!File|!Blob|!MediaSource|!MediaStream} obj The object for which
 *   to create the URL.
 * @return {string} The URL for the object.
 */
export function createObjectUrl(obj: File | Blob | MediaSource | MediaStream): string;
/**
 * Revokes a URL created by {@link createObjectUrl}.
 * Throws an error if the browser does not support Object Urls.
 *
 * @param {string} url The URL to revoke.
 * @return {void}
 */
export function revokeObjectUrl(url: string): void;