Function formatter

08_08e/script.js:10–17

(locale = "en-US", currency = "USD", value)

 */

const formatter = (locale = "en-US", currency = "USD", value) => {
  let formattedValue = new Intl.NumberFormat(locale, {
    style: "currency",
    currency: currency,
  }).format(value);

  return formattedValue;
};

const tipCalculator = (sum, percentage, locale, currency) => {
  let tip = sum * (percentage / 100);