Proper way to share state with another reducer

[ArmenNik]

Is there any way to share state with a "global" reducer to modify state?
Something like this

protocol BaseStateProtocol { }

func baseReduce(_ state: inout BaseStateProtocol, action: BaseAction) -> Effect<BaseAction> { switch action { } }

And Feature

`struct Feature: ReducerProtocol {

struct State: BaseStateProtocol {
}

`enum Action {
    case baseAction(BaseAction)
 } `

 var body: some ReducerProtocol<State, Action> {
 Reduce<State, Action> { state, action in
        switch action {
         case let .baseAction(action):
            return baseReduce(&state.baseState, action: action)
        }
}

}`

I have a BaseStateProtocol, and my feature state conforms to it. I would like to share my feature state with a 'global' reducer to modify it. What am I doing wrong? Maybe the way I am doing it is incorrect. I need some help. Thanks in advance.