js__typescript__pluralsight1/app/lib/utilityfunctions.ts

function CalculateLateFees(daysLate: number): number {
  return daysLate * 0.25;
}

function MaxBooksAllowed(age: number): number {
  if (age < 12) {
    return 3;
  }
  else {
    return 10;
  }
}

// Since it is not exported, it will be private to the namespace.
function privateFunc(): void {
  console.log('This is private...');
}

export { CalculateLateFees, MaxBooksAllowed };