happychin-web/utils/useI18.js

import { reactive, toRefs, watchEffect } from 'vue'
import { useI18n } from 'vue-i18n'

export function useStoreI18n(options) {
  const { t, locale } = useI18n(options)
  const keyMap = reactive({})
  function $$t(...key) {
    watchEffect(() => {
      if (locale.value) keyMap[key] = t(...key)
    })
    return toRefs(keyMap)[key]
  }
  return {
    $$t
  }
}