初始化项目，自 v1.7.1 版本开始

src/plugins/vueI18n/helper.ts

@@ -0,0 +1,3 @@
+export const setHtmlPageLang = (locale: LocaleType) => {
+  document.querySelector('html')?.setAttribute('lang', locale)
+}

src/plugins/vueI18n/index.ts

@@ -0,0 +1,42 @@
+import type { App } from 'vue'
+import { createI18n } from 'vue-i18n'
+import { useLocaleStoreWithOut } from '@/store/modules/locale'
+import type { I18n, I18nOptions } from 'vue-i18n'
+import { setHtmlPageLang } from './helper'
+
+export let i18n: ReturnType<typeof createI18n>
+
+const createI18nOptions = async (): Promise<I18nOptions> => {
+  const localeStore = useLocaleStoreWithOut()
+  const locale = localeStore.getCurrentLocale
+  const localeMap = localeStore.getLocaleMap
+  const defaultLocal = await import(`../../locales/${locale.lang}.ts`)
+  const message = defaultLocal.default ?? {}
+
+  setHtmlPageLang(locale.lang)
+
+  localeStore.setCurrentLocale({
+    lang: locale.lang
+    // elLocale: elLocal
+  })
+
+  return {
+    legacy: false,
+    locale: locale.lang,
+    fallbackLocale: locale.lang,
+    messages: {
+      [locale.lang]: message
+    },
+    availableLocales: localeMap.map((v) => v.lang),
+    sync: true,
+    silentTranslationWarn: true,
+    missingWarn: false,
+    silentFallbackWarn: true
+  }
+}
+
+export const setupI18n = async (app: App<Element>) => {
+  const options = await createI18nOptions()
+  i18n = createI18n(options) as I18n
+  app.use(i18n)
+}