nostros/frontend/i18n.config.ts

import i18n from 'i18next'
import { initReactI18next } from 'react-i18next'
import { NativeModules, Platform } from 'react-native'
import en from './Locales/en.json'
import es from './Locales/es.json'
import ru from './Locales/ru.json'
/* eslint-disable import/no-duplicates */
import setDefaultOptions from 'date-fns/setDefaultOptions'
import { enUS as dateEnUS, es as dateEs, ru as dateRu } from 'date-fns/locale'
/* eslint-enable import/no-duplicates */

const locale =
  Platform.OS === 'ios'
    ? NativeModules.SettingsManager.settings.AppleLocale
    : NativeModules.I18nManager.localeIdentifier

const dateLocales = { es: dateEs, ru: dateRu, en: dateEnUS }
const deviceLocale: string = locale?.split('_')[0] ?? 'en'
setDefaultOptions({ locale: dateLocales[deviceLocale] })

i18n.locale = locale
i18n.use(initReactI18next).init({
  compatibilityJSON: 'v3',
  fallbackLng: 'en',
  resources: {
    en,
    es,
    ru,
  },
  lng: locale.substring(0, 2),
  ns: ['common'],
  defaultNS: 'common',
  debug: true,
  interpolation: {
    escapeValue: false,
  },
})

export default i18n