Funcion que valida el rut chileno en Javascript

Validar Rut en Javascript

const validateRut = (value) => {
  const cleanValue = value.replace(/\.|-/g, '');
  const isValid = /^\d{7,8}[0-9kK]$/.test(cleanValue);
  
  if (isValid) {
    const rutBody = cleanValue.slice(0, -1);
    const rutVerifier = cleanValue.slice(-1).toUpperCase();
    const product = rutBody
      .split('')
      .reverse()
      .map((digit, i) => digit * (i < 6 ? 2 + i : i-4))
      .reduce((acc, curr) => acc + curr);
    const verifier =
      '0K98765432'.charAt(product % 11);
    return verifier === rutVerifier;
  }
  return isValid;
}