Mutations JavaScript

JavaScript
1

Why is it that my code doesn’t work?

Exercise

function mutation(arr) {
  const snoop = w =>
    w
      .join('')
      .toLowerCase()
      .split('')
      .sort('')
      .join('');
  let first = arr.slice(0, 1);
  const base = snoop(first);
  let second = arr.slice(1, 2);
  const finder = snoop(second);
  return base === finder;
}
3

I don’t know for sure but I think sort() is expecting something different as callback than an empty string