Fix the duplicate skip comparing globally — find the bug

const items = [1, 2, 2].sort((a, b) => a - b);
let total = 0;
const path = [];
function go(start) {
  total++;
  for (let i = start; i < items.length; i++) {
    if (i > 0 && items[i] === items[i - 1]) continue;
    path.push(items[i]); go(i + 1); path.pop();
  }
}
go(0);
document.querySelector('#out').textContent = total === 6 ? "six subsets" : "got " + total;