docs_vue2/common/nav.js

import { entries, sortBy } from 'lodash'
import nav from '../assets/data/nav.json'

export default entries(nav).reduce((ret, [lang, items]) => {
  ret[lang] = items.map(item => {
    if (!item.children) {
      return item
    }
    return {
      ...item,
      children:
        item.slug === 'components'
          ? sortBy(item.children, child => child.title)
          : item.children
    }
  })
  return ret
}, {})