What’s the best way to deal with third party libraries?

In most cases, you won’t need to convert third-party libraries to Swift. So, you’ll still benefit from any updates from vendors, and use those libraries from either Objective-C or Swift code.

Here’s the best way to deal with third-party libraries:

1. Remove third-party files from your Xcode project;
2. Convert your project;
3. Add files back.

This will ensure that Objective-C filenames of third party libraries in your Xcode project file won’t get converted to corresponding Swift file names.