detect if are using vpn

vpn.js

function detectVPN() {
  var browserTimezone = Intl.DateTimeFormat().resolvedOptions().timeZone

  return fetch(`https://ipapi.co/json`)
  .then(function(response) { return response.json() })
  .then(function (data) { 
    var ipTimezone = data.timezone
    console.log(`browser timezone: ${browserTimezone}`, `ip timezone: ${ipTimezone}`)
    return {
      browser: browserTimezone,
      ip: ipTimezone,
      usingVPN: ipTimezone != browserTimezone
    }
  })
}