Hello friends, I have a code and I want to improve it. The code is supposed to give price information based on the number but it's not working. Who can help me? Thanks in advance.

// WhatsApp numarasını al ve temizle
const phoneNumber = (event.payload.sender || "").replace('whatsapp:', '');

function getAreaCode(phoneNumber) {
  // WhatsApp formatını ele al
  const match = phoneNumber.match(/^(\d{1,3})/);
  return match ? match[1] : "";
}

function getCurrencyFromAreaCode(areaCode) {
  const currencyMap = {
    '1': 'USD',    // ABD ve Kanada
    '44': 'GBP',   // Birleşik Krallık
    '49': 'EUR',   // Almanya
    '33': 'EUR',   // Fransa
    '90': 'TRY',   // Türkiye
    // Diğer ülkeleri buraya ekleyebilirsiniz
  };
  return currencyMap[areaCode] || 'USD'; 
// Varsayılan olarak USD kullan
}

function getPrice(currency) {
  const priceMap = {
    'USD': '100 USD',
    'EUR': '90 EUR',
    'GBP': '80 GBP',
    'TRY': '1000 TRY'
  };
  return priceMap[currency] || '100 USD';
}

const areaCode = getAreaCode(phoneNumber);
const currency = getCurrencyFromAreaCode(areaCode);

// event nesnesine değerleri kaydet
event.phoneNumber = phoneNumber;
event.areaCode = areaCode;
event.currency = currency;
event.price = getPrice(currency);

console.log('Phone Number:', event.phoneNumber);
console.log('Area Code:', event.areaCode);
console.log('Detected Currency:', event.currency);
console.log('Price:', event.price);

// Değerleri döndür (bu, akışın devamında kullanılabilir)
return {
  phoneNumber: event.phoneNumber,
  areaCode: event.areaCode,
  currency: event.currency,
  price: event.price
};

https://cdn.discordapp.com/attachments/1121494527727902891/1258700874818129941/11.png?ex=6689000a&is=6687ae8a&hm=1e7d58055edfb459216ca3f23b5d1073ccd21dc34953a829c0af1e3c957d1e0d&