Subtract the Product and Sum of Digits of an Integer

export function subtractProductAndSum(n: number): number {
  const product = (acc: number, num: number) => acc * num;
  const sum = (acc: number, num: number) => acc + num;
 
  const digits = [...n.toString()].map((v) => +v);
  return digits.reduce(product, 1) - digits.reduce(sum, 0);
}