function somenteNumeros(v: string): string {
  return v.replace(/\D+/g, "");
}

export function formatarCpfCnpj(v: string): string {
  const d = somenteNumeros(v);

  // CPF
  if (d.length <= 11) {
    return d
      .replace(/(\d{3})(\d)/, "$1.$2")
      .replace(/(\d{3})(\d)/, "$1.$2")
      .replace(/(\d{3})(\d{1,2})$/, "$1-$2")
      .slice(0, 14);
  }

  // CNPJ
  return d
    .replace(/^(\d{2})(\d)/, "$1.$2")
    .replace(/^(\d{2})\.(\d{3})(\d)/, "$1.$2.$3")
    .replace(/\.(\d{3})(\d)/, ".$1/$2")
    .replace(/(\d{4})(\d)/, "$1-$2")
    .slice(0, 18);
}