How to pass this to link stores?

[DanMossa]

I see that in the js documentation this is how you link stores

class RootStore {
    constructor() {
        this.userStore = new UserStore(this)
        this.todoStore = new TodoStore(this)
    }
}

class UserStore {
    constructor(rootStore) {
        this.rootStore = rootStore
    }

    getTodos(user) {
        // Access todoStore through the root store.
        return this.rootStore.todoStore.todos.filter(todo => todo.author === user)
    }
}

class TodoStore {
    todos = []
    rootStore

    constructor(rootStore) {
        makeAutoObservable(this, { rootStore: false })
        this.rootStore = rootStore
    }
}

I'm confused as to how I can do this with mobx.

I have a RootStore

class RootStore = RootStoreBase with _$RootStore;

abstract class RootStoreBase with Store {
  // Not sure if this is correct either.
  late LikesStore likesStore;
  RootStoreBase() {
    likesStore = LikesStore(this);
  }
}

How can I set this up in my LikesStore?

[fzyzcjy]

this as RootStore

[DanMossa]

@fzyzcjy
So it's okay that inside RootStore it's late and not final?

And then I should pass this as RootStore even though it's RootStoreBase. Isn't that wrong though because it actually is the RootStoreBase? Or am I not understanding something?