Lang.js

// @/lang/index.js
const numberFormats = {
  'en': {
    currency: {
      style: 'currency',
      currency: 'CHF'
    }
  },
  'de': {
    currency: {
      style: 'currency',
      currency: 'EUR'
    }
  },
  'fr': {
    currency: {
      style: 'currency',
      currency: 'EUR'
    }
  },
  'ch': {
    currency: {
      style: 'currency',
      currency: 'CHF'
    }
  },
  'it': {
    currency: {
      style: 'currency',
      currency: 'EUR'
    }
  }
};

// @/lang/numeralLocales
export const registerNumeric = (val) => {
  const locale = getLangCode();
  return i18n.n(val, 'currency', locale.toLowerCase() || 'en');
};

// main.ts
Vue.prototype.$numeral = registerNumeric;

// @/components/X.vue

methods: {
  totalPrice(val) {
    return this.$numeral(val);
  }
}