react-native-get-device-locale/src/NativeGetDeviceLocale.ts

react-native-get-device-locale is a lightweight and efficient React Native module that provides easy access to the device's locale.

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

export interface Spec extends TurboModule {
	getDeviceLocale(): Promise<string>;
}

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