Coordinator Pattern in Swift

ApplicationContext.swift

final class ApplicationContext {
    // This is where you initialize most of the application stack
    // that needs to be passed down to the coordinator chain for
    // fetching data, and other important stuff.
    // Example:
    // let networkClient = NetworkClient()
}

Coordinator.swift

protocol Coordinator: class {
    var childCoordinators: [Coordinator] { get set }
    var context: ApplicationContext { get }
    
    func start()
}

extension Coordinator {
    func addChild(coordinator: Coordinator) {
        childCoordinators.append(coordinator)
    }
    
    func removeChild(coordinator: Coordinator) {
        childCoordinators = childCoordinators.filter { $0 !== coordinator }
    }
}

RootCoordinator.swift

class RootCoordinator: Coordinator {
    var childCoordinators: [Coordinator] = []
    let context: ApplicationContext
    
    init(context: ApplicationContext) {
        self.context = context
    }
}