Added support for single localization

dist/modules/seo/hreflang.d.ts

@@ -1,8 +1,10 @@
 import type { I18nConfig, LocalizedSlugs } from '../i18n/index.js';
 type BuildHreflangArgs = {
+    /** slug per locale for the current document, e.g. { pl: 'o-nas', en: 'about' } */
+    slugs: LocalizedSlugs;
+    config: I18nConfig;
     /** Absolute site origin, e.g. 'https://example.com'. Omit for relative paths. */
     baseUrl?: string;
-    config: I18nConfig;
     /** Home slug that collapses to the locale root. Defaults to 'home'. */
     homeSlug?: string;
     /**
@@ -11,32 +13,22 @@ type BuildHreflangArgs = {
      * are omitted — an entry with no archive in that language has no URL there.
      */
     prefix?: LocalizedSlugs;
-    /** slug per locale for the current document, e.g. { pl: 'o-nas', en: 'about' } */
-    slugs: LocalizedSlugs;
 };
 /**
+ * Builds a map of locale → URL for hreflang alternate links, suitable for
  * Next.js Metadata `alternates.languages`.
  *
  * Bridges SEO and i18n: for each configured locale that the document has a
  * slug in, it produces the locale-aware path (via buildLocalizedPath),
  * optionally prefixed with an absolute origin.
  *
- * Also emits `x-default` pointing at the default locale — the version Google
- * serves when the user's language/region matches no hreflang, and the fallback
- * when the root ('/') redirect is ambiguous (Googlebot with no/foreign
- * Accept-Language).
- *
  * @example
  * buildHreflangAlternates({
  *   slugs: { pl: 'o-nas', en: 'about' },
  *   config,
  *   baseUrl: 'https://example.com',
  * })
- * // → {
- * //   pl: 'https://example.com/pl/o-nas',
- * //   en: 'https://example.com/en/about',
- * //   'x-default': 'https://example.com/pl/o-nas',
- * // }
+ * // → { pl: 'https://example.com/pl/o-nas', en: 'https://example.com/en/about' }
  */
-export declare function buildHreflangAlternates({ baseUrl, config, homeSlug, prefix, slugs, }: BuildHreflangArgs): Record<string, string>;
+export declare function buildHreflangAlternates({ slugs, config, baseUrl, homeSlug, prefix, }: BuildHreflangArgs): Record<string, string>;
 export {};