React Native module with Swift UIView and .xib file

Question

I am building a custom RN module where I want to expose Swift UIViews from my library to others to use in their RN app. I have a basic example working with a Swift UIView class showing up in my RN module example app:

@objc(TestViewManager)
class TestViewManager : RCTViewManager {
    
  override static func requiresMainQueueSetup() -> Bool {
    return true
  }

  override func view() -> UIView! {
    //let myCustomView: TestView = UIView.fromNib()
    return TestView()
  }
}

When I try to load TestView with nib (using the myCustomView fromNib() init) the RN app builds and runs but then crashes. This is my UIView extension:

extension UIView {
    class func fromNib<T: UIView>() -> T {
        return Bundle(for: T.self).loadNibNamed(String(describing: T.self), owner: nil, options: nil)![0] as! T
    }
}

TestView.swift - my .xib file is named TestView.xib and has File Owner set to TestView.swift:

public class TestView: UIView {

    override init(frame: CGRect) {
      super.init(frame: frame)
    }

    required init?(coder aDecoder: NSCoder) {
      fatalError("init(coder:) has not been implemented")
    }

}

Are .xib files "allowed" in RN modules? I couldn't find any docs on this. Does anyone have any suggestions or know if this is possible?