/** returns a boolean determining if it is a zoomIn keyboard event
 * @param event - A keyboard event param.
 */
export declare function isZoomIn({ key, metaKey, ctrlKey }: KeyboardEvent): boolean;
/** returns a boolean determining if it is a zoomIn wheel event
 * @param event - A wheel event param.
 */
export declare function isZoomInWheel({ deltaY, metaKey, ctrlKey }: WheelEvent): boolean;
/** returns a boolean determining if it is a zoomOut keyboard event
 * @param event - A keyboard event param.
 */
export declare function isZoomOut({ key, metaKey, ctrlKey }: KeyboardEvent): boolean;
/** returns a boolean determining if it is a zoomOut wheel event
 * @param event - A wheel event param.
 */
export declare function isZoomOutWheel({ deltaY, metaKey, ctrlKey }: WheelEvent): boolean;
/** returns a boolean determining if it is a zoomX keyboard event
 * @param event - A keyboard event param.
 */
export declare function isZoomX({ key }: KeyboardEvent): boolean;
/** returns a boolean determining if key for Explore mode is pressed
 * @param event - A keyboard event param.
 */
export declare function isExplore({ key }: KeyboardEvent): boolean;
/** returns a boolean determining if it is a reset keyboard event
 * @param event - A keyboard event param.
 */
export declare function isReset({ key }: KeyboardEvent): boolean;
/** returns a boolean determining if it is a pan keyboard event
 * @param event - A keyboard event param.
 */
export declare function isPan({ key }: KeyboardEvent): boolean;