react-native-localization-settings/src/NativeLocalizationSettings.ts

React Native module to expose per-app language preferences API on iOS and Android.

import type { TurboModule } from 'react-native';
import { TurboModuleRegistry } from 'react-native';

export interface Spec extends TurboModule {
  getLanguage(): Promise<string>;
  setLanguage(lang: string): void;
  getConstants(): {
    language: string;
  };
}

export default TurboModuleRegistry.getEnforcing<Spec>('LocalizationSettings');