/**
 * @author       Richard Davey <rich@photonstorm.com>
 * @copyright    2018 Photon Storm Ltd.
 * @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
 */
declare var Rectangle: any;
/**
 * [description]
 *
 * @function Phaser.Geom.Rectangle.Union
 * @since 3.0.0
 *
 * @generic {Phaser.Geom.Rectangle} O - [out,$return]
 *
 * @param {Phaser.Geom.Rectangle} rectA - [description]
 * @param {Phaser.Geom.Rectangle} rectB - [description]
 * @param {Phaser.Geom.Rectangle} [out] - [description]
 *
 * @return {Phaser.Geom.Rectangle} [description]
 */
declare var Union: any;