Async Currency Converter

async_currency_converter.js

const getExchangeRate = async (from, to) => {
  try {
    const apiKey = '' // Add unique fixer.io apiKey
    const response = await axios.get(`http://data.fixer.io/api/latest?access_key=${apiKey}&format=1`)
    const euro = 1 / response.data.rates[from];
    const rate = euro * response.data.rates[to];

    if (isNaN(rate)) {
      throw new Error()
    }
  } catch (e) {
    throw new Error(`Unable to get exchange rate for ${from} and ${to}.`)
  }
};

const getCountries = async (currencyCode) => {
  try {
    const response = await axios.get(`https://restcountries.eu/rest/v2/currency/${currencyCode}`)
    return response.data.map(country => country.name)
  } catch (e) {
    throw new Error(`Unable to get countries that use ${currencyCode}`)
  }
};

const convertCurrency = async(from, to, amount) => {
  const rate = await getExchangeRate(from, to)
  const convertedAmount = (amount * rate).toFixed(2);
  const countries = await getCountries(to)
  return `${amount} ${from} is worth ${convertedAmount} ${to}. You can spend these in the following countries: ${countries.join(', ')}`;
};


convertCurrency('USD', 'CAD', 20).then(message => {
  console.log(message)
}).catch((e) => {
  console.log(e.message);
});