/**
 * method to tell if platform of running browser is kind of touch device
 * @returns {boolean}
 */
export declare function isTouchDevice(): boolean;
/**
 * method to tell if platform of running browser is kind of mobile device
 * @returns {boolean}
 */
export declare function isHandheldDevice(): boolean;
/**
 * method to tell if platform of running browser is kind of mobile device
 * @returns {boolean}
 */
export declare function isMobileDevice(): boolean;
/**
 * method to tell if operating system of running browser is iOS
 * @returns {boolean}
 */
export declare function isIOS(): boolean;
/**
 * method to tell if operating system of running browser is MacOS
 * @returns {boolean}
 */
export declare function isMacOS(): boolean;
/**
 * method to tell if platform of running browser is Safari
 * @returns {boolean}
 */
export declare function isSafari(): false | RegExpMatchArray | null;