Weird iOS warning: "ITMS-90176: Unrecognized Locale"

[dylmye]

Hi! Thanks for this great package. I am trying to use it in an Expo app, and have set up the plugin like so:

[
  "react-native-localization-settings",
  {
    "languages": ["en", "fr"]
  }
]

When I build and submit to App Store, I get this message:

Although delivery was successful, you may want to correct the following issues in your next delivery. Once you've corrected the issues, upload a new binary to App Store Connect.

ITMS-90176: Unrecognized Locale - - The locale names used in localization directories at [Payload/SetlistSherlock.app/base.lproj] are invalid. iTunes supports BCP47 but not the UN M.49 specification. Refer to the Language and Locale Designations guide at https://developer.apple.com/library/content/documentation/MacOSX/Conceptual/BPInternational/LanguageandLocaleIDs/LanguageandLocaleIDs.html for more information on naming your language-specific directories.

When I download the build from EAS this is what that directory looks like:

In Xcode this is how localisation looks after running expo prebuild:

Is there anything I'm doing wrong here? If it matters I'm on latest Expo 52 and using new architecture. Thanks in advance :)

[medomy]

@dylmye ,, Have you found a solution for this issue I'm kinda facing the same one now

[dylmye]

@medomy nope :(

[bugrafelekoglu]

I also got this warning on my latest submission. Using Expo 52.

[teojiesern]

I've created a PR that should solve the issue, attached the patch to be used before the PR gets merged in

diff --git a/node_modules/react-native-localization-settings/plugin/build/ios.js b/node_modules/react-native-localization-settings/plugin/build/ios.js
index f9a3315..3a04fed 100644
--- a/node_modules/react-native-localization-settings/plugin/build/ios.js
+++ b/node_modules/react-native-localization-settings/plugin/build/ios.js
@@ -3,12 +3,11 @@ Object.defineProperty(exports, "__esModule", { value: true });
 exports.withIosLanguages = void 0;
 const config_plugins_1 = require("@expo/config-plugins");
 const generateLocalizableContent = (languages) => `{
-  "sourceLanguage" : "Base",
+  "sourceLanguage" : "${languages[0]}",
   "strings" : {
     "react-native-localization-settings" : {
       "extractionState" : "manual",
       "localizations" : {
-        "base" : {"stringUnit" : {"state" : "translated","value" : ""}},
         ${languages
     .map((lang) => `"${lang}" : {"stringUnit" : {"state" : "translated","value" : ""}},`)
     .join('\n        ')}
@@ -23,7 +22,7 @@ const withIosLanguages = (config, { languages = [] } = {}) => {
         const projectObject = project.pbxProjectSection()[project.getFirstProject().uuid];
         if (projectObject) {
             // Add known regions to the project
-            projectObject.knownRegions = ['Base', ...languages];
+            projectObject.knownRegions = languages;
             // Write the Localizable.xcstrings file
             config_plugins_1.IOSConfig.XcodeProjectFile.createBuildSourceFile({
                 project,
diff --git a/node_modules/react-native-localization-settings/plugin/src/ios.ts b/node_modules/react-native-localization-settings/plugin/src/ios.ts
index 6caae2a..e6d0313 100644
--- a/node_modules/react-native-localization-settings/plugin/src/ios.ts
+++ b/node_modules/react-native-localization-settings/plugin/src/ios.ts
@@ -5,12 +5,11 @@ import {
 } from '@expo/config-plugins';
 
 const generateLocalizableContent = (languages: string[]) => `{
-  "sourceLanguage" : "Base",
+  "sourceLanguage" : "${languages[0]}",
   "strings" : {
     "react-native-localization-settings" : {
       "extractionState" : "manual",
       "localizations" : {
-        "base" : {"stringUnit" : {"state" : "translated","value" : ""}},
         ${languages
           .map(
             (lang) =>
@@ -32,7 +31,7 @@ export const withIosLanguages: ConfigPlugin<{
       project.pbxProjectSection()[project.getFirstProject().uuid];
     if (projectObject) {
       // Add known regions to the project
-      projectObject.knownRegions = ['Base', ...languages];
+      projectObject.knownRegions = languages;
 
       // Write the Localizable.xcstrings file
       IOSConfig.XcodeProjectFile.createBuildSourceFile({