ykpoh

struct Launch: Codable, Equatable {
    let id: String?
    let name: String?
    let details: String?
    let date_utc: Date?
    let upcoming: Bool?
    let success: Bool?
    let rocket: String?
    
    init(id: String?, name: String?, details: String?, date_utc: Date?, upcoming: Bool?, success: Bool?, rocket: String?) {

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struct LaunchResponse: Codable, Equatable {
    let docs: [Launch]?
}

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class LaunchListViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
    @IBOutlet var tableView: UITableView!
    var viewModel: LaunchListViewModelType = LaunchListViewModel()
    var disposeBag: DisposeBag!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        
        tableView.delegate = self

ykpoh

protocol LaunchListViewModelType {
    var launchViewModels: BehaviorRelay<[LaunchListTableViewCellViewModel]> { get } // 1
    var notifyError: BehaviorRelay<Error?> { get } // 2
    
    func fetchLaunchesWithQuery() // 3
}

class LaunchListViewModel: LaunchListViewModelType { 
    let apiService: APIServiceProtocol // 4