React native invoke functions from Swift

Our app needs to do integration with IOT devices and we get the NFC driver framework from device manufacturer. But the lib and APIs from the framework is in Swift. I was able to follow this tutorial to invoke bridge at objective-c level, but I have no idea how to invoke the function from Swift. Following is an example of swift integration code from the device manufacturer. Thanks in advance.

import DeviceLib
class NFCViewController: UIViewController {
    private var nfcDriver: NFCDriver?
    override func viewDidLoad() {
        super.viewDidLoad()
        self.nfcDriver = NFCDriver(delegate: self)
    }
    @IBAction func startNFC(_ sender: Any) {
        if self.nfcDriver != nil {
          do {
                try self.nfcDriver!.sessionBegin()
          } catch {}
    }
}