const palindrome = str => {
  const s = str.toLowerCase().replace(/[\W_]/g, '');
  return s === s.split('').reverse().join('');
};

const palindrome = str => {
  const s = str.toLowerCase().replace(/[\W_]/g, "");
  return (
    s ===
    s
      .split("")
      .reverse()
      .join("")
  );
};