export declare const TOUCH_START = "touchstart";
export declare const TOUCH_MOVE = "touchmove";
export declare const TOUCH_END = "touchend";
export declare const TOUCH_CANCEL = "touchcancel";
export declare const MOUSE_UP = "mouseup";
export declare const MOUSE_MOVE = "mousemove";
export declare const MOUSE_DOWN = "mousedown";
export declare const CLIENT_X = "clientX";
export declare const CLIENT_Y = "clientY";
/**
 * 输入阶段
 */
export declare const TYPE_START = "start";
export declare const TYPE_MOVE = "move";
export declare const TYPE_CANCEL = "cancel";
export declare const TYPE_END = "end";
export declare function isFunction(input: any): input is Function;