Find number of rotations needed for the strings to match

cycle.js

function cycle(a, b) {
  if (a.length !== b.length) return 0;
  const arr = a.split('');
  const temp = [...arr]; // i am copying the array.
  let count = 0;
  for(let e of arr) {
      count += 1;
      console.log(temp.join(''));
      const firstElement = temp.shift(); // this removes the 1st element of the array
      temp.push(firstElement);
      if (temp.join('') === b) {
	 break;
      }
  }
  return count;
}
const result = cycle('chocolate', 'olatechoc');
console.log(result)

this was a question asked in an interview with ZeMoSo labs