I currently get the following error:

Instance method 'loadObject(ofClass:completionHandler:)' requires that 'NSItemProvider' conform to '_ObjectiveCBridgeable'

with this code:

.onDrop(of: ["public.text"], isTargeted: nil) { providers, location in
     guard let provider = providers.first else { return false }
             
     provider.loadObject(ofClass: NSItemProvider.self) { item, error in
          guard error == nil, let item = item else { return }
                  
          if let curTool = item as? Tools, let dropURL = item as? URL {
                handleDrop(with: (curTool, dropURL))
          }
     }
     return true
}


func handleDrop(with dropData: (Tools, URL)) {
     let (curTool, curURL) = dropData
}

Here is the matching on drag (curTool is a simple enum) :

.onDrag {
    let curTool = Tools.circle
    let curURL = URL(string: "https://example.com")!
                    
    let itemProvider = NSItemProvider(object: NSString(string: "Dummy data"))
    itemProvider.registerObject(String(describing: curTool) as NSItemProviderWriting, visibility: .all)
    itemProvider.registerObject(curURL as NSItemProviderWriting, visibility: .all)
    return itemProvider
}