generateCnpj function exported ✓ 100.0%

export function generateCnpj(formatted = true): string {
  // First 8 digits are random, then 0001 (branch), then 2 check digits
  const base = [...randomDigits(8), 0, 0, 0, 1];

  const firstCheckDigit = calculateCnpjCheckDigit(
    base,
    [5, 4, 3, 2, 9, 8, 7, 6, 5, 4, 3, 2],
  );
  base.push(firstCheckDigit);

  const secondCheckDigit = calculateCnpjCheckDigit(
    base,
    [6, 5, 4, 3, 2, 9, 8, 7, 6, 5, 4, 3, 2],
  );
  base.push(secondCheckDigit);

  const cnpj = base.join("");

  if (!formatted) return cnpj;

  return `${cnpj.slice(0, 2)}.${cnpj.slice(2, 5)}.${cnpj.slice(5, 8)}/${cnpj.slice(8, 12)}-${cnpj.slice(12)}`;
}