How to use the react-native-localize.getCurrencies function in react-native-localize

render() {
    return (

render() {
    if (!this.state.isTranslationLoaded) {
      return ;
    }

    return (

function findBestAvailableCurrency(supportedCurrencyCodes: LocalCurrencyCode[]) {
  const deviceCurrencies = RNLocalize.getCurrencies()
  const supportedCurrenciesSet = new Set(supportedCurrencyCodes)

  for (const deviceCurrency of deviceCurrencies) {
    if (supportedCurrenciesSet.has(deviceCurrency as LocalCurrencyCode)) {
      return deviceCurrency as LocalCurrencyCode
    }
  }

  return null
}

export function findBestAvailableCurrency() {
  const supportedCurrencyCodes = CURRENCIES.map(currency => currency.code)
  const preferredCurrencyCodes = RNLocalize.getCurrencies().filter(code =>
    supportedCurrencyCodes.includes(code)
  )
  const currencyCode = preferredCurrencyCodes.length
    ? preferredCurrencyCodes[0]
    : 'USD'
  return CURRENCIES.find(currency => currency.code === currencyCode)
}