dependencies: [
    ...
    .package(url: "https://github.com/AntonoffEvgeniy/KeyboardObserver.git", from: "1.0.0")
],
targets: [
    .target(name: "App", dependencies: [
        .product(name: "KeyboardObserver", package: "KeyboardObserver"),
    ]),

import KeyboardObserver

class MyViewController: UIViewController {
    @IBOutlet weak var bottomConstraint: NSLayoutConstraint!
    
    private var keyboardObserver: KeyboardObserver?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        keyboardObserver = KeyboardObserver(bottomConstraint: bottomConstraint, view: view)
    }
}