export function addClass(dom: any, className: string) {
  const classes = (dom as any).className.split(/ +/);
  classes.push(className);
  (dom as any).className = classes.join(" ");
}

export function removeClass(dom: any, className: string) {
  let classes: string[] = (dom as any).className.split(/ +/);
  classes = classes.filter((c) => {
    return c != className;
  });
  (dom as any).className = classes.join(" ");
}