index.js
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import Vue from 'vue'
import VueI18n from 'vue-i18n'
// default language
import enUSLang from './lang/en-US'
import zhCNLang from './lang/zh-CN'
Vue.use(VueI18n)
const messages = {
'en-US': {
...enUSLang
},
'zh-CN': {
...zhCNLang
}
}
export const defaultLang = 'zh-CN'
const i18n = new VueI18n({
locale: defaultLang,
fallbackLocale: defaultLang,
messages
})
export default i18n
const loadedLanguages = [defaultLang]
function setI18nLanguage (lang) {
i18n.locale = lang
document.querySelector('html').setAttribute('lang', lang)
return lang
}
export function loadLanguageAsync (lang = defaultLang) {
return new Promise(resolve => {
if (i18n.locale !== lang) {
if (!loadedLanguages.includes(lang)) {
return import(/* webpackChunkName: "lang-[request]" */ `./lang/${lang}`).then(msg => {
i18n.setLocaleMessage(lang, msg.default)
loadedLanguages.push(lang)
return setI18nLanguage(lang)
})
}
return resolve(setI18nLanguage(lang))
}
return resolve(lang)
})
}