src_actions_index.js

import * as ActionTypes from "../ActionTypes"


export const fetchUser = username => ({ type: ActionTypes.FETCH_USER, payload: username });
export const fetchUserFulfilled = payload => ({ type: ActionTypes.FETCH_USER_FULFILLED, payload });

src_ActionTypes.js

export const FETCH_USER = 'FETCH_USER';
export const FETCH_USER_FULFILLED = 'FETCH_USER_FULFILLED';

src_App.css

.App {
  text-align: center;
}

.App-logo {
  animation: App-logo-spin infinite 20s linear;
  height: 80px;
}

.App-header {
  background-color: #222;
  height: 150px;
  padding: 20px;
  color: white;
}

.App-intro {
  font-size: large;
}

@keyframes App-logo-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

src_App.js

import React, { Component } from 'react';
import {combineReducers, createStore, applyMiddleware, bindActionCreators} from 'redux';
import { combineEpics, createEpicMiddleware } from "redux-observable"
import { fetchUser } from "./actions";
import user  from './reducers/reducer_user';
import 'rxjs';
import logo from './logo.svg';
import './App.css';
import {connect} from "react-redux";

class App extends Component {
    constructor(props) {
       super(props);
    }
    render() {
    return (
      <div className="App">
          <div>
              <h1>Fetch User Demo</h1>
              <button onClick={fetchUser}>
                  Fetch User Info
              </button>
              <div>
              <textarea>{JSON.stringify(this.props.fetchUser, null, 2)}</textarea>
              </div>
          </div>
      </div>
    );
    }
}
function mapStateToProps(state) {
    return {
        username: state.username
    };
}

function mapDispatchToProps(dispatch) {
    // Whenever selectBook is called, the result should be passed
    // to all of our reducers
    return bindActionCreators({ fetchUser: fetchUser }, dispatch);
}

export default connect(mapStateToProps,mapDispatchToProps)(App);

src_App.test.js

import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';

it('renders without crashing', () => {
  const div = document.createElement('div');
  ReactDOM.render(<App />, div);
});

src_configureStore.js

import { createBrowserHistory } from 'history'
import { createStore, applyMiddleware, compose } from 'redux';
import { createEpicMiddleware } from 'redux-observable';
import { routerMiddleware } from 'react-router-redux';
import { rootReducer } from './reducers';
import { rootEpic } from './epics';
const history = createBrowserHistory();

const epicMiddleware = createEpicMiddleware(rootEpic);

export default function configureStore() {
    const composeEnhancers = window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ || compose;
    const store = createStore(
        rootReducer,
        composeEnhancers(
            applyMiddleware(
                epicMiddleware,
                routerMiddleware(history)
            )
        )
    );
    return store;
}

src_epics_epic_user_fetch.js

import * as ActionTypes from '../ActionTypes';
import {fetchUserFulfilled} from "../actions";
import 'rxjs';
import { ajax } from 'rxjs/observable/dom/ajax';
export default function fetchUserEpic(action$) {
    return action$.ofType(ActionTypes.FETCH_USER)
        .flatMap(action =>
            ajax.getJSON(`https://api.github.com/users/${action.payload}`)
                .map(response => {console.log("dsadasdas");fetchUserFulfilled(response)})
        );
}

src_epics_index.js

import { combineEpics } from 'redux-observable';
import fetchUserEpic from './epic_user_fetch';


export const rootEpic = combineEpics(
    fetchUserEpic
);

src_index.css

body {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
}

src_index.js

import React from 'react';
import ReactDOM from 'react-dom';
import { Provider } from 'react-redux';
import { createBrowserHistory } from 'history'
import './index.css';
import 'rxjs'
import App from './App';
import registerServiceWorker from './registerServiceWorker';
import configureStore from './configureStore';
const store = configureStore();
const history = createBrowserHistory();

ReactDOM.render(<Provider store={store}><App /></Provider>, document.getElementById('root'));
registerServiceWorker();

src_logo.svg

src_reducers_index.js

import { combineReducers } from 'redux';
import { routerReducer } from 'react-router-redux';
import users from './reducer_user';
export const rootReducer = combineReducers({
    users: users,
    routing: routerReducer
});

src_reducers_reducer_user.js

import * as ActionTypes from "../ActionTypes";

export default function users(state={}, action) {
    switch (action.type) {
        case ActionTypes.FETCH_USER_FULFILLED:
            return {
                ...state,
                // `login` is the username
                [action.payload.login]: action.payload
            };

        default:
            return state;
    }
};

src_registerServiceWorker.js

// In production, we register a service worker to serve assets from local cache.

// This lets the app load faster on subsequent visits in production, and gives
// it offline capabilities. However, it also means that developers (and users)
// will only see deployed updates on the "N+1" visit to a page, since previously
// cached resources are updated in the background.

// To learn more about the benefits of this model, read https://goo.gl/KwvDNy.
// This link also includes instructions on opting out of this behavior.

const isLocalhost = Boolean(
  window.location.hostname === 'localhost' ||
    // [::1] is the IPv6 localhost address.
    window.location.hostname === '[::1]' ||
    // 127.0.0.1/8 is considered localhost for IPv4.
    window.location.hostname.match(
      /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
    )
);

export default function register() {
  if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
    // The URL constructor is available in all browsers that support SW.
    const publicUrl = new URL(process.env.PUBLIC_URL, window.location);
    if (publicUrl.origin !== window.location.origin) {
      // Our service worker won't work if PUBLIC_URL is on a different origin
      // from what our page is served on. This might happen if a CDN is used to
      // serve assets; see https://github.com/facebookincubator/create-react-app/issues/2374
      return;
    }

    window.addEventListener('load', () => {
      const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;

      if (!isLocalhost) {
        // Is not local host. Just register service worker
        registerValidSW(swUrl);
      } else {
        // This is running on localhost. Lets check if a service worker still exists or not.
        checkValidServiceWorker(swUrl);
      }
    });
  }
}

function registerValidSW(swUrl) {
  navigator.serviceWorker
    .register(swUrl)
    .then(registration => {
      registration.onupdatefound = () => {
        const installingWorker = registration.installing;
        installingWorker.onstatechange = () => {
          if (installingWorker.state === 'installed') {
            if (navigator.serviceWorker.controller) {
              // At this point, the old content will have been purged and
              // the fresh content will have been added to the cache.
              // It's the perfect time to display a "New content is
              // available; please refresh." message in your web app.
              console.log('New content is available; please refresh.');
            } else {
              // At this point, everything has been precached.
              // It's the perfect time to display a
              // "Content is cached for offline use." message.
              console.log('Content is cached for offline use.');
            }
          }
        };
      };
    })
    .catch(error => {
      console.error('Error during service worker registration:', error);
    });
}

function checkValidServiceWorker(swUrl) {
  // Check if the service worker can be found. If it can't reload the page.
  fetch(swUrl)
    .then(response => {
      // Ensure service worker exists, and that we really are getting a JS file.
      if (
        response.status === 404 ||
        response.headers.get('content-type').indexOf('javascript') === -1
      ) {
        // No service worker found. Probably a different app. Reload the page.
        navigator.serviceWorker.ready.then(registration => {
          registration.unregister().then(() => {
            window.location.reload();
          });
        });
      } else {
        // Service worker found. Proceed as normal.
        registerValidSW(swUrl);
      }
    })
    .catch(() => {
      console.log(
        'No internet connection found. App is running in offline mode.'
      );
    });
}

export function unregister() {
  if ('serviceWorker' in navigator) {
    navigator.serviceWorker.ready.then(registration => {
      registration.unregister();
    });
  }
}