kalinchernev

const nest = (items, parent = 0) => {
  const nested = [];

  Object.values(items).forEach(item => {
    // parent can be a string or a number
    /* eslint-disable-next-line eqeqeq */
    if (item.parent == parent) {
      const children = nest(items, item.id);

      if (children.length) {