nest objects by 2 props: id and parent

nest.js

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) {
        /* eslint-disable-next-line no-param-reassign */
        item.children = children;
      }

      nested.push(item);
    }
  });

  return nested;
};

export default nest;