From 0f2152dc053d7f5d1a4a55daad4ac95ab5c91c7d Mon Sep 17 00:00:00 2001
From: JJ Kasper <jj@jjsweb.site>
Date: Mon, 26 Oct 2020 18:52:44 -0500
Subject: [PATCH] Add redirecting domain specific locales

---
 packages/now-next/src/index.ts | 15 ++++++++++++++-
 packages/now-next/src/utils.ts |  1 +
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/packages/now-next/src/index.ts b/packages/now-next/src/index.ts
index 8850e45c6f5..f66c50c2a91 100644
--- a/packages/now-next/src/index.ts
+++ b/packages/now-next/src/index.ts
@@ -2021,13 +2021,26 @@ export const build = async ({
                   {
                     // TODO: enable redirecting between domains, will require
                     // updating the src with the desired locales to redirect
-                    src: '/',
+                    src: `^${path.join(
+                      '/',
+                      entryDirectory
+                    )}/?(?:${i18n.locales
+                      .map(locale => escapeStringRegexp(locale))
+                      .join('|')})?/?$`,
                     locale: {
                       redirect: i18n.domains.reduce(
                         (prev: Record<string, string>, item) => {
                           prev[item.defaultLocale] = `http${
                             item.http ? '' : 's'
                           }://${item.domain}/`;
+
+                          if (item.locales) {
+                            item.locales.map(locale => {
+                              prev[locale] = `http${item.http ? '' : 's'}://${
+                                item.domain
+                              }/${locale}`;
+                            });
+                          }
                           return prev;
                         },
                         {}
diff --git a/packages/now-next/src/utils.ts b/packages/now-next/src/utils.ts
index 2ccb2fb8ded..d47aa796dfd 100644
--- a/packages/now-next/src/utils.ts
+++ b/packages/now-next/src/utils.ts
@@ -332,6 +332,7 @@ export type RoutesManifest = {
     domains?: Array<{
       http?: boolean;
       domain: string;
+      locales?: string[];
       defaultLocale: string;
     }>;
   };