takeDemo.js

Array.prototype.take = function(count) {
  return this.filter((_, i) => i < count);
};
Array.prototype.takeWhile = function(predicate) {
  return this.filter((_, i) => predicate(_, i));
};

function takeDemo(orders) {
  const firstTwoOrders1 = orders.take(2);
  printHeaderFooter(
    "First Two Orders - Take",
    () => printOrders(firstTwoOrders1, indentBy),
    indentBy
  );

  const firstTwoOrders2 = orders.takeWhile((order, index) => index <= 1);
  printHeaderFooter(
    "First Two Orders - TakeWhile",
    () => printOrders(firstTwoOrders2, indentBy),
    indentBy
  );
}