@applicaster/zapp-react-native-utils/localizationUtils/deviceLocales.android.ts

Applicaster Zapp React Native utilities package

import * as R from "ramda";
import { I18nManager } from "react-native";

// this is done because Android will return `iw` instead of `he` for the hebrew locale;
const alignLanguageCode = R.when(R.equals("iw"), R.always("he"));

export function getDeviceLocales() {
  return R.compose(
    Array,
    alignLanguageCode,
    R.head,
    R.split("_"),
    R.prop("localeIdentifier")
  )(I18nManager.getConstants());
}