AppContext.swift

class AppContext {
    let container: DIContainer
    
    init() {
        self.container = DIContainer.init()
        ServiceAssembly.assembled(in: container)
    }
}


enum ServiceAssembly {
    static func assembled(in container: DIContainer) {
        container.register(Feature1Service.self) { (_) -> Feature1Service in
            return Feature1()
        }
        
        container.register(User.self) { (_) -> User in
            return UserSession()
        }
        
        container.register(Feature3Service.self) { (resolver) -> Feature3Service in
            let user = resolver.resolve(User.self)
            return Feature3(user!)
        }
    }
}