cleanstring.ts

function cleanString(s: string) {
  let arrayed = s.split(''); //?
  let index = 0;
  while (index < arrayed.length) {
    arrayed
    if (arrayed[index] == "#") {
      if (index == 0) {
        arrayed.splice(index, 1);
        index = 0;
        continue;
      }
      arrayed.splice(index - 1, 2);
      index = 0;
      continue;
    }

    index++;
  }
  return arrayed.join('');
}
                                
// it worked :), but here's a much better solution from another warrior =>
    
function clean_string(s) {
  const result = []
  for (const c of s) {
    if (c === "#") {
      result.pop()
    } else {
      result.push(c)
    }
  }
  return result.join("")
}