/** @internal */
export declare abstract class ɵPointerHelper {
    static getClientX(event: PointerEvent | TouchEvent): number;
    static getClientY(event: PointerEvent | TouchEvent): number;
    static getPageX(event: PointerEvent | TouchEvent): number;
    static getPageY(event: PointerEvent | TouchEvent): number;
    static isPointerEvent(event: Event): event is PointerEvent;
    static isTouchEvent(event: Event): event is TouchEvent;
}