An Xcode Source Editor Extension that generates a type declaration based on the file name

Because typing the class name or choosing a Cocoa Touch Class template and selecting the superclass can be tedious.

1. Open DeclareType.xcodeproj
2. Enable target signing for both the Application and the Source Code Extension using your own developer ID
3. Select the application target and then Product > Archive
4. Export the archive as a macOS App
5. Run the app, then quit (Don't delete the app, put it in a convenient folder)
6. Go to System Preferences -> Extensions -> Xcode Source Editor and make sure the extension is enabled
7. The menu-item should now be available from Xcode's Editor menu

• Detects probable superclass (or that a protocol is created) based on the file name ending
• Imports UIKit it wasn't imported and a UIKit class is being created
• Detects: UIView, UIViewController, UIButton, UITableView, UITableViewCell, UICollectionView, UICollectionViewCell
• Creates a protocol if the file name ends with "able" or "Protocol"
• Will create a class with no parent if no candidate was found

Preferences (⌘ + ,) -> Key Bindings -> Search for "Declare"

Detects superclasses only for UIKit classes. Works only with Swift.