Throttled.swift

  private var valueTimestamp: Date? = nil
  private let interval: TimeInterval = 1.5  

...

  @objc func textDidChange(_ sender: UITextField) {
        searchTerm = sender.text ?? ""
        if let valueTimestamp = valueTimestamp {
            if Date().timeIntervalSince(valueTimestamp) > interval {
                self.valueTimestamp = nil
                GithubAPI.search(term: searchTerm) { [weak self] result in
                    switch (result) {
                    case .success(let models): self?.onSuccess(models)
                    case .failure(let error): self?.onError(error)
                    }
                }
            }
        } else {
            self.valueTimestamp = Date()
            DispatchQueue.main.asyncAfter(deadline: .now() + interval) { [weak self] in
                guard let self = self else { return }
                self.textDidChange(self.searchField)
            }
        }
    }