const fn1 = function() {
  console.log('Hej')
}

const fn2 = function(param) {
  console.log(param);
}

const fn3 = function(param1, param2) {
  console.log({param1, param2});
}

const fn4 = function(param1, param2) {
  console.log('FN4');
  console.log({param1, param2});
}