"Declaration or statement expected" error in switch-case statement

I am creating a clone project in which I am getting a "Declaration or statement expected" in a switch statement. I am not able to find any error in the syntax of my code. Also couldn't find any answers on the net.

swtich(action.type) {
    case actionTypes.SET_USER:
        return ({
            ...state,
            user:action.user
        });
    default:
        (return state);
  }

Github Link of my project: https://github.com/aditramdas/Chat-App/tree/main/chat-app-new