Refactor middleware (non-breaking)

docs/pages/docs/routing/middleware.mdx

@@ -114,7 +114,7 @@ With this, your domain config for this particular domain will be used.
 
 Apart from the [`routing` configuration](/docs/routing#shared-configuration) that is shared with the [navigation APIs](/docs/routing/navigation), the middleware accepts a few additional options that can be used for customization.
 
-### Turning off locale detection [#locale-detection-false]
+### Turning off locale detection [#locale-detection]
 
 If you want to rely entirely on the URL to resolve the locale, you can set the `localeDetection` property to `false`. This will disable locale detection based on the `accept-language` header and a potentially existing cookie value from a previous visit.
 
@@ -539,7 +539,7 @@ If you're using the [static export](https://nextjs.org/docs/app/building-your-ap
 **Static export limitations:**
 
 1. There's no default locale that can be used without a prefix (same as [`localePrefix: 'always'`](/docs/routing#locale-prefix-always))
-2. The locale can't be negotiated at runtime (same as [`localeDetection: false`](#locale-detection-false))
+2. The locale can't be negotiated at runtime (same as [`localeDetection: false`](#locale-detection))
 3. You can't use [pathname localization](/docs/routing#pathnames)
 4. This requires [static rendering](/docs/getting-started/app-router/with-i18n-routing#static-rendering)
 5. You need to add a redirect for the root of the app

packages/next-intl/src/middleware/config.tsx

@@ -1,48 +1,9 @@
-import {
-  RoutingBaseConfigInput,
-  receiveLocalePrefixConfig
-} from '../routing/config';
-import {Locales, LocalePrefixConfigVerbose, Pathnames} from '../routing/types';
-
-export type MiddlewareRoutingConfigInput<
-  AppLocales extends Locales,
-  AppPathnames extends Pathnames<AppLocales>
-> = RoutingBaseConfigInput<AppLocales> & {
-  locales: AppLocales;
-  defaultLocale: AppLocales[number];
-
+export type MiddlewareOptions = {
   /** Sets the `Link` response header to notify search engines about content in other languages (defaults to `true`). See https://developers.google.com/search/docs/specialty/international/localized-versions#http */
   alternateLinks?: boolean;
 
   /** By setting this to `false`, the cookie as well as the `accept-language` header will no longer be used for locale detection. */
   localeDetection?: boolean;
-
-  /** Maps internal pathnames to external ones which can be localized per locale. */
-  pathnames?: AppPathnames;
-};
-
-export type MiddlewareRoutingConfig<
-  AppLocales extends Locales,
-  AppPathnames extends Pathnames<AppLocales>
-> = Omit<
-  MiddlewareRoutingConfigInput<AppLocales, AppPathnames>,
-  'alternateLinks' | 'localeDetection' | 'localePrefix'
-> & {
-  alternateLinks: boolean;
-  localeDetection: boolean;
-  localePrefix: LocalePrefixConfigVerbose<AppLocales>;
 };
 
-export function receiveConfig<
-  AppLocales extends Locales,
-  AppPathnames extends Pathnames<AppLocales>
->(
-  input: MiddlewareRoutingConfigInput<AppLocales, AppPathnames>
-): MiddlewareRoutingConfig<AppLocales, AppPathnames> {
-  return {
-    ...input,
-    alternateLinks: input?.alternateLinks ?? true,
-    localeDetection: input?.localeDetection ?? true,
-    localePrefix: receiveLocalePrefixConfig(input?.localePrefix)
-  };
-}
+export type ResolvedMiddlewareOptions = Required<MiddlewareOptions>;