/**
 * @author       Richard Davey <rich@photonstorm.com>
 * @copyright    2018 Photon Storm Ltd.
 * @license      {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
 */
/**
 * Calculate the angle of the line in radians.
 *
 * @function Phaser.Geom.Line.Angle
 * @since 3.0.0
 *
 * @param {Phaser.Geom.Line} line - The line to calculate the angle of.
 *
 * @return {number} The angle of the line, in radians.
 */
declare var Angle: (items: any, value: any, step: any, index: any, direction: any) => any;