Redux-action NPM

redux-action

import { createAction, createReducer } from 'redux-action'

Uses dispatch with Promise chain
Generates action type automatically when no pass action type
payload first reducer
Assign updated data to state automatically
Works with redux-thunk

APIs

createAction

import { createAction } from 'redux-action'

const action = createAction('action', (...args) => {
  // ...
  return payload
})

const asyncAction = createAction('async action', (...args) => {
  // ...
  return Promise.resolve(payload)
})

createReducer

import { createReducer } from 'redux-action'

const reducer = createReducer(defaultState, {
  'action': (payload, state, action) => {
    // ...
    // only return updated state
    // will assign to state automatically
    return updatedData
  },

  'async action': (payload, state, action) => {
    // ...
    return updatedData
  },

  'common usage': payload => ({some: payload}),
})

Uses dispatch with Promise

class App extends React.Component {
  async updateData(data) {
    const {
      dispatch,
      userId
    } = this.props

    await dispatch(updateUserInfo(userId, data))
    await dispatch(getUserInfo(userId))
    // ...
  }

  render() {
    // ...
  }
}

Full example

store.js

import { createStore, applyMiddleware } from 'redux'
import reduxThunk from 'redux-thunk'
import reducer from './reducer'

const createStoreWithMiddleware = applyMiddleware(
  reduxThunk
)(createStore)

const store = createStoreWithMiddleware(reducer)

export default store

action.js

import { createAction } from 'redux-action'

export const setUserStatus = createAction('set user status', status => status)
export const getUserInfo = createAction('get user info', () => Promise.resolve(userInfo))

reducer.js

import { createReducer } from 'redux-action'
import { combineReducers } from 'redux'

const defaultState = {
  status: 'normal',
  info: {},
}

const user = createReducer(defaultState, {
  'set user status': status => ({status}),
  'get user info': info => ({info}),
})

// combine reducers

const rootReducer = combineReducers({
  user,
})

export default rootReducer

Auto generated action type

createAction also can generate a unique type, when no pass any string in the first argument.

action.js

import { createAction } from 'redux-action'

export const setUserStatus = createAction(status => status)
export const getUserInfo = createAction(() => Promise.resolve(userInfo))

reducer.js

import { createReducer } from 'redux-action'

import {
  setUserStatus,
  getUserInfo
} from './action'

const defaultState = {
  status: 'normal',
  info: {},
}

const user = createReducer(defaultState, {
  [setUserStatus]: status => ({status}),
  [getUserInfo]: info => ({info}),
})