Recursively add parent objects to each child (lodash)

recursive_parents.js

import _ from 'lodash';

/*
 *  Description:
 *  Add `.parent` property (with reference to parent object)
 *  to each array item recursively.
 *
 *  INPUT:
 *
 *  parents []
 *    parent {}
 *      children []
 *        item {}
 *        item {}
 *          children []
 *            item {}
 *            ...
 *        item: Object
 *        ...
 */

function addParentRecursive(items) {
  _(items).forEach(function(item) {
    _(item.children).forEach(function(child) {
      child.parent = item;
    })
    addParentRecursive(item.children);
  });
  return items;
}