expo-localization

import React from 'react';
import {StyleSheet, Text, View} from 'react-native';
import {useLocales, useCalendars} from '@amazon-devices/expo-localization';

export const App = () => {
  const locales = useLocales();
  const calendars = useCalendars();

  return (
    <View style={styles.container}>
      <Text style={styles.text}>useLocales():</Text>
      <Text style={styles.text}>{JSON.stringify(locales, null, 2)}</Text>
      <Text style={styles.text}>useCalendars():</Text>
      <Text style={styles.text}>{JSON.stringify(calendars, null, 2)}</Text>
    </View>
  );
};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    flexDirection: 'row',
    backgroundColor: 'white',
  },
  text: {
    color: 'black',
    fontSize: 32,
  },
});