NavLink com @StateObject

navlink_stateobject.swift

import SwiftUI

/// Module A

/// An outer module, which knows how to build ViewB with all 
/// its dependecies will set this closure.
public var viewBFactory: (() -> AnyView)?

class ViewAModel: ObservableObject {
    @Published var isShowingB = false
}

struct ViewA: View {
    @StateObject var model: ViewAModel

    var body: some View {
        Button("Show B") {
            model.isShowingB = true
        }
        .overlay(
            NavigationLink(
                destination: Group {
                    if model.isShowingB {
                        viewBFactory?()
                    }
                },
                isActive: $model.isShowingB,
                label: EmptyView.init
            )
        )
    }
}