nuxt-i18n-micro/dist/runtime/server/middleware/i18n.global.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 } from "@i18n-micro/utils/active-locales";
import { withoutAppBaseURL } from "@i18n-micro/utils/app-path";
import { getLocaleCookieName } from "@i18n-micro/utils/cookie";
import { resolveServerLocale } from "@i18n-micro/utils/resolve-locale";
import { resolveI18nConfigWithRuntimeOverrides } from "@i18n-micro/utils/runtime-config";
import { defineEventHandler, getCookie, getHeader, getQuery, getRequestURL } from "h3";
import { getI18nPrivateConfig } from "#i18n-internal/config";
import { getI18nConfig } from "#i18n-internal/strategy";
import { useRuntimeConfig } from "#imports";
import { loadTranslationsFromServer } from "../utils/server-loader.js";
export default defineEventHandler(async (event) => {
  const appBaseURL = useRuntimeConfig(event).app.baseURL;
  const rawPath = event.path || getRequestURL(event).pathname;
  const path = withoutAppBaseURL(rawPath, appBaseURL);
  if (path.startsWith("/api") || path.startsWith("/_nuxt") || path.startsWith("/_locales") || path.startsWith("/__")) return;
  if (path.includes(".") && !path.endsWith(".html")) return;
  const config = resolveI18nConfigWithRuntimeOverrides(
    getI18nConfig(),
    useRuntimeConfig(event).public
  );
  const privateConfig = getI18nPrivateConfig();
  const validLocales = getEnabledLocaleCodes(config.locales);
  const defaultLocale = config.defaultLocale || "en";
  const pathSegments = path.split("/").filter(Boolean);
  const firstSegment = pathSegments[0];
  const hasLocaleInUrl = Boolean(firstSegment && validLocales.includes(firstSegment));
  const cookieName = getLocaleCookieName(config);
  const queryLocale = getQuery(event).locale ? String(getQuery(event).locale) : null;
  const cookieLocale = cookieName ? getCookie(event, cookieName) : null;
  const locale = resolveServerLocale({
    defaultLocale,
    validLocales,
    autoDetectLanguage: config.autoDetectLanguage,
    hasLocaleInUrl,
    urlLocale: firstSegment ?? null,
    queryLocale,
    cookieLocale,
    acceptLanguageHeader: getHeader(event, "accept-language")
  });
  let translations = {};
  if (privateConfig.serverTranslationPreload) {
    try {
      const loaded = await loadTranslationsFromServer(locale, "index");
      translations = loaded.data;
    } catch {
      translations = {};
    }
  }
  event.context.i18n = {
    locale,
    translations
  };
});