/**
 * Copyright (c) 2015-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file at
 * https://github.com/facebook/create-react-app/blob/master/LICENSE
 */
/**
 * Reads the BROWSER environment variable and decides what to do with it. Returns
 * true if it opened a browser or ran a node.js script, otherwise false.
 */
export declare function openBrowser(url: string): boolean;