nuxt-i18n-micro/dist/runtime/server/utils/locale-server-middleware.js

Nuxt I18n Micro is a lightweight, high-performance internationalization module for Nuxt, designed to handle multi-language support with minimal overhead, fast build times, and efficient runtime performance.

import { getEnabledLocaleCodes, getEnabledLocales } from "@i18n-micro/utils/active-locales";
import { resolveI18nConfigWithRuntimeOverrides } from "@i18n-micro/utils/runtime-config";
import { getI18nConfig } from "#i18n-internal/strategy";
import { useRuntimeConfig } from "#imports";
import { detectCurrentLocale } from "./locale-detector.js";
export const useLocaleServerMiddleware = (event, defaultLocale, currentLocale) => {
  const config = resolveI18nConfigWithRuntimeOverrides(
    getI18nConfig(),
    useRuntimeConfig(event).public
  );
  const { locales, defaultLocale: configDefaultLocale, fallbackLocale } = config;
  const enabledLocales = getEnabledLocales(locales);
  const detectedLocale = currentLocale || detectCurrentLocale(
    event,
    {
      fallbackLocale,
      defaultLocale: defaultLocale || configDefaultLocale,
      locales: enabledLocales,
      localeCookie: config.localeCookie || "user-locale",
      autoDetectLanguage: true
    },
    defaultLocale
  );
  const localeConfig = enabledLocales.find((l) => l.code === detectedLocale) ?? null;
  const availableLocales = getEnabledLocaleCodes(locales);
  const isDefault = detectedLocale === (defaultLocale || configDefaultLocale || "en");
  const isFallback = detectedLocale === (fallbackLocale || defaultLocale || configDefaultLocale || "en");
  return {
    current: detectedLocale,
    default: defaultLocale || configDefaultLocale || "en",
    fallback: fallbackLocale || defaultLocale || configDefaultLocale || "en",
    available: availableLocales,
    locale: localeConfig,
    isDefault,
    isFallback
  };
};