src/locales/index.js

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
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// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

import Vue from 'vue'
import VueI18n from 'vue-i18n'

function loadLocaleMessages () {
  const locales = require.context('./', true, /[A-Za-z0-9-_,\s]+\.json$/i)
  const messages = {}
  locales.keys().forEach(key => {
    const matched = key.match(/([A-Za-z0-9-_]+)\./i)
    if (matched && matched.length > 1) {
      const locale = matched[1]
      messages[locale] = locales(key)
    }
  })
  return messages
}

Vue.use(VueI18n)

export default new VueI18n({
  locale: Vue.ls ? Vue.ls.get('current_locale') || 'en' : 'en',
  fallbackLocale: 'en',
  silentTranslationWarn: true,
  messages: loadLocaleMessages()
})