bbs.hoolihome.com/middleware/i18n.js

export default ({ isHMR, app, store, route, params, error, redirect }) => {
  // If middleware is called from hot module replacement, ignore it
  if (isHMR) return
  let { locales } = store.state
  let { fullPath } = route
  locales.some(val => {
    if (fullPath.indexOf(`/${val}`) === 0) {
      store.commit('SET_LANG', val)
      return true
    }
  })
}