app/composables/utils/useI18nUtils.ts

import { useI18n } from 'vue-i18n'
import I18nUtils from '~/services/utils/i18nUtils'

let i18nUtilsClass: null | I18nUtils = null
export const useI18nUtils = () => {
  // Avoid memory leak
  if (i18nUtilsClass === null) {
    const i18n = useI18n()
    // @ts-expect-error TODO: explain the error of conversion from useI18n result to VueI18n
    i18nUtilsClass = new I18nUtils(i18n)
  }
  return i18nUtilsClass
}