/**
 * @author       Richard Davey <rich@photonstorm.com>
 * @copyright    2018 Photon Storm Ltd.
 * @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
 */
/**
 * [description]
 *
 * @function Phaser.Tweens.Builders.GetNewValue
 * @since 3.0.0
 *
 * @param {object} source - [description]
 * @param {string} key - [description]
 * @param {*} defaultValue - [description]
 *
 * @return {function} [description]
 */
declare var GetNewValue: (source: any, key: any, defaultValue: any) => any;