Typescript Redux combine features in index

index.ts

// store/todo/index.ts

import {combineReducers} from 'redux'
import {
  State as TodoState,
  reducer as todoReducer,
  actions as todoActions,
} from './todo'
import {
  State as RewardState,
  reducer as rewardReducer,
  actions as rewardActions,
} from './reward'

export interface State {
  todos: TodoState
  rewards: RewardState
}

export const reducer = combineReducers<State>({
  todos: todoReducer,
  rewards: rewardReducer,
})

export const actions = {
  ...todoActions,
  ...rewardActions,
}