@smui/button/src/GroupItem.ts

Svelte Material UI - Button

export default function GroupItem(
  node: Element,
  {
    addClass = (className) => node.classList.add(className),
    removeClass = (className) => node.classList.remove(className),
  }: {
    addClass?: (className: string) => void;
    removeClass?: (className: string) => void;
  } = {},
) {
  addClass('smui-button__group-item');

  return {
    destroy() {
      removeClass('smui-button__group-item');
    },
  };
}