reducer-example.ts

export function reducer(state = initialState, action: AuthActionsUnion): State {
  switch (action.type) {
    case AuthActionTypes.LoginSuccess: {
      return {
        ...state,
        loggedIn: true,
        user: action.payload.user,
      };
    }

    case AuthActionTypes.Logout: {
      return initialState;
    }

    default: {
      return state;
    }
  }
}