interface ViewportMouseEvent extends MouseEvent {
    viewportX: number;
    viewportY: number;
    viewportNormalizedX: number;
    viewportNormalizedY: number;
    canvasX: number;
    canvasY: number;
    canvasNormalizedX: number;
    canvasNormalizedY: number;
    inside: boolean;
}
export default ViewportMouseEvent;