Sorting numbers by ASC and DESC in javascript without mutating the original array

sorting.js

const numbers = [4, 2, 5, 1, 3]

const orderBy = ([...arr], type = 'ASC') => {
  const order = {
    ASC: (a, b) => a - b,
    DESC: (a, b) => b - a
  }

  return arr.sort(order[type])
}

console.log(
  orderBy(numbers, 'ASC'), // [1, 2, 3, 4, 5]
  orderBy(numbers, 'DESC'), // [5, 4, 3, 2, 1]
)