Old file with utils

utils.js

// Old, old function that lives here from the scratch
function multiply (a, b) {
  return a * b;
}
function sum (a, b) {
  return a + b;
}
function calculateSomethingSpecial(data) {
  return data.map(
    dataItem => sum(dataItem.param1, dataItem.param2)
  );
}