Declarative AJAX requests and automatic network state management for single-page applications

Table of content

• Motivation
• Features
• Installation
• Usage
• Examples
• Companion libraries

Motivation :arrow_up:

With redux-requests, assuming you use axios (you could use it with anything else too!) you could refactor a code in the following way:

  import axios from 'axios';
- import thunk from 'redux-thunk';
+ import { handleRequests } from '@redux-requests/core';
+ import { createDriver } from '@redux-requests/axios'; // or another driver

  const FETCH_BOOKS = 'FETCH_BOOKS';
- const FETCH_BOOKS_SUCCESS = 'FETCH_BOOKS_SUCCESS';
- const FETCH_BOOKS_ERROR = 'FETCH_BOOKS_ERROR';
-
- const fetchBooksRequest = () => ({ type: FETCH_BOOKS });
- const fetchBooksSuccess = data => ({ type: FETCH_BOOKS_SUCCESS, data });
- const fetchBooksError = error => ({ type: FETCH_BOOKS_ERROR, error });

- const fetchBooks = () => dispatch => {
-   dispatch(fetchBooksRequest());
-
-   return axios.get('/books').then(response => {
-     dispatch(fetchBooksSuccess(response.data));
-     return response;
-   }).catch(error => {
-     dispatch(fetchBooksError(error));
-     throw error;
-   });
- }

+ const fetchBooks = () => ({
+   type: FETCH_BOOKS,
+   request: {
+     url: '/books',
+     // you can put here other Axios config attributes, like method, data, headers etc.
+   },
+ });

- const defaultState = {
-   data: null,
-   pending: 0, // number of pending FETCH_BOOKS requests
-   error: null,
- };
-
- const booksReducer = (state = defaultState, action) => {
-   switch (action.type) {
-     case FETCH_BOOKS:
-       return { ...defaultState, pending: state.pending + 1 };
-     case FETCH_BOOKS_SUCCESS:
-       return { ...defaultState, data: action.data, pending: state.pending - 1 };
-     case FETCH_BOOKS_ERROR:
-       return { ...defaultState, error: action.error, pending: state.pending - 1 };
-     default:
-       return state;
-   }
- };

  const configureStore = () => {
+   const { requestsReducer, requestsMiddleware } = handleRequests({
+     driver: createDriver(axios),
+   });
+
    const reducers = combineReducers({
-     books: booksReducer,
+     requests: requestsReducer,
    });

    const store = createStore(
      reducers,
-     applyMiddleware(thunk),
+     applyMiddleware(...requestsMiddleware),
    );

    return store;
  };

Features :arrow_up:

Just actions

Just dispatch actions and enjoy automatic AJAX requests and network state management

First class aborts support

Automatic and configurable requests aborts, which increases performance and prevents race condition bugs before they even happen

Drivers driven

Compatible with anything for server communication. Axios, Fetch API, GraphQL, promise libraries, mocking? No problem! You can also integrate it with other ways by writing a custom driver!

Batch requests

Define multiple requests in single action

Optimistic updates

Update remote data before receiving server response to improve perceived performance

Cache

Cache server response forever or for a defined time period to decrease amount of network calls

Data normalisation

Use automatic data normalisation in GraphQL Apollo fashion, but for anything, including REST!

Server side rendering

Configure SSR totally on Redux level and write truly universal code between client and server

React bindings

Use react bindings to decrease code amount with React even more

Typescript friendly

It has many utilities to make Typescript experience even greater, for example all data generics are inferred in selectors and dispatch results automatically.

Installation :arrow_up:

To install the package, just run:

$ npm install @redux-requests/core

or you can just use CDN: https://unpkg.com/@redux-requests/core.

Also, you need to install a driver:

• if you use Axios, install axios and @redux-requests/axios:

  $ npm install axios @redux-requests/axios

  or CDN: https://unpkg.com/@redux-requests/axios.

• if you use Fetch API, install isomorphic-fetch (or a different Fetch polyfill) and @redux-requests/fetch:

  $ npm install isomorphic-fetch redux-requests/fetch

  or CDN: https://unpkg.com/@redux-requests/fetch.

Also, you have to install reselect, which probably you use anyway.

Usage :arrow_up:

For usage, see documentation

Examples :arrow_up:

I highly recommend to try examples how this package could be used in real applications. You could play with those demos and see what actions are being sent with redux-devtools.

There are following examples currently:

• basic
• advanced
• mutations
• normalisation
• Fetch API
• GraphQL
• actions-creator
• mock-and-multiple-drivers
• server-side-rendering
• suspense-ssr
• promise driver
• showcase

Companion libraries :arrow_up:

• redux-smart-actions - Redux addon to create actions and thunks with minimum boilerplate, you can use it to create requests actions faster and in a less verbose way, without constants, useful especially to create thunks without constants, so you have access to Redux state in request actions without any need to pass them with action arguments

Licence :arrow_up:

MIT