Compute the Powerset of a Set in JavaScript

powerset.js

const computePowerSetOfSetOfNumbers = (set) => {
  const powerset = []
  const n = set.length
  let i = 0
  while (i < n) {
    let x = n
    while (x > i) {
      powerset.push(set.slice(i, x))
      x--
    }
    i++
  }
  return powerset
}

const set = [1, 2, 3, 4, 5]
const powerset = computePowerSetOfSetOfNumbers(set)