reducers-with-immutable-helpers.js

import {composeReducers, makeReducer, makeAsyncReducer} from 'redux-toolbelt'
import { updateObjectProperties } from 'redux-toolbelt-immutable-helpers'
import { loadCustomers, loadOrders, loadProfile, changeUserName, logout } from './actions'

export default composeReducers(
  {
    profile: makeAsyncReducer(loadProfile),
    customers: makeAsyncReducer(loadCustomers),
    orders: makeAsyncReducer(loadOrders)
  },
  makeReducer(logout, (state, {type, payload}) =>
    updateObjectProperties(
      state,
      ['profile', 'customers', 'orders'],
      {loading: false, data: null}
    )
  )
)