Swift 3: Deserialize cookie values obtained from WebView

swift3-deserialize-cookie

let sharedCookieStorage = HTTPCookieStorage.shared
for cookie in sharedCookieStorage.cookies as [HTTPCookie]! {
  let cookieValue = cookie.value as String
  let cookieConverted = cookieValue.removingPercentEncoding
  let cookieJson = cookieConverted?.data(using: .utf8)
  let json = try? JSONSerialization.jsonObject(with: cookieJson!, options: [])
  let cookie = (json as? NSArray) as Array?
  let lastItem = cookie?.last
  if let lastObject = lastItem as? Dictionary<String, AnyObject> {
      print("Cookie",lastObject)
      if lastObject["someKey"] != nil {
          newBlocks = lastObject["someKey"] as! String
      }
  }
}