ViewController+Throttler.swift

private(set) var searchTermThrottle = Throttler<String>(1.5)

override func viewDidLoad() {
    super.viewDidLoad()
    searchField.addTarget(self, action: #selector(textDidChange(_:)), for: .editingChanged)
    searchTermThrottle.on { (searchTerm) in
        GithubAPI.search(term: searchTerm) { [weak self] result in
            switch (result) {
            case .success(let models): self?.onSuccess(models)
            case .failure(let error): self?.onError(error)
            }
        }
    }
}

@objc func textDidChange(_ sender: UITextField) {
    searchTermThrottle.receive(sender.text ?? "")
}