gistfile1.txt

const rootReducer = (state, action) => {
  // when a logout action is dispatched it will reset redux state
  if (action.type === 'USER_LOGGED_OUT') {

    const { users, comment } = state;

    state = { users, comment };
  }
  
  if (action.type === 'USER_LOGGED_IN') {

    const { users, comment, orders } = state;

    state = { users, comment, orders };
  }

  return appReducer(state, action);
};