JS Расстояние между Ip Node Js

[the same]

Есть ли библиотека для NodeJs которая позволяет расчитать расстояние между Ip?

 

[neverlane]

export const deg2rad = (deg) => deg * (Math.PI / 180);

export const getDistanceFromLatLonInKm = (lat1, lon1, lat2, lon2) => {
  const R = 6371; // Radius of the earth in km
  const dLat = deg2rad(lat2 - lat1);  // deg2rad below
  const dLon = deg2rad(lon2 - lon1);
  const a =
    Math.sin(dLat / 2) * Math.sin(dLat / 2) +
    Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) *
    Math.sin(dLon / 2) * Math.sin(dLon / 2);
  const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
  const d = R * c; // Distance in km
  return d;
};

export const fetchIpLocation = (ip) => fetch(`http://ip-api.com/json/${ip}?fields=status,message,lat,lon&lang=ru`)
  .then((res) => res.json().catch(() => null)) 
  .then((json) => {
    if (null === json || json?.status !== 'success') return null;
    return json;
  });

export const distanceBetweenIps = async (ip1, ip2) => {
  const _ip1 = await fetchIpLocation(ip1);
  const _ip2 = await fetchIpLocation(ip2);

  if (null === _ip1 || null === _ip2) return null;

  return getDistanceFromLatLonInKm(_ip1.lat, _ip1.lon, _ip2.lat, _ip2.lon);
};

distanceBetweenIps('185.169.134.107', '8.8.8.8').then(console.log);