nigeria-validator/src/phone.js

Validate and format common Nigerian data: phone numbers, BVNs, bank codes, etc.

// src/phone.js
const isValidPhone = (phone) => {
  const cleaned = phone.replace(/\D/g, "");
  return (
    /^0[789][01]\d{8}$/.test(cleaned) || /^234[789][01]\d{8}$/.test(cleaned)
  );
};

const formatPhone = (phone, format = "local") => {
  let cleaned = phone.replace(/\D/g, "");
  if (cleaned.startsWith("234")) {
    cleaned = "0" + cleaned.slice(3);
  }

  if (format === "local") return cleaned;
  if (format === "intl") return "+234" + cleaned.slice(1);
  return cleaned;
};

module.exports = { isValidPhone, formatPhone };