├── src
    ├── index.css
    ├── index.js
    ├── App.test.js
    ├── App.css
    ├── App.js
    ├── logo.svg
    └── registerServiceWorker.js
├── public
    ├── favicon.ico
    ├── manifest.json
    └── index.html
├── .gitignore
├── package.json
└── README.md


/src/index.css:
--------------------------------------------------------------------------------
1 | body {
2 |   margin: 0;
3 |   padding: 0;
4 |   font-family: sans-serif;
5 | }
6 | 


--------------------------------------------------------------------------------
/public/favicon.ico:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/AlexanderShushunov/lets-kill-lifecycle/HEAD/public/favicon.ico


--------------------------------------------------------------------------------
/src/index.js:
--------------------------------------------------------------------------------
1 | import React from 'react';
2 | import ReactDOM from 'react-dom';
3 | import './index.css';
4 | import App from './App';
5 | import registerServiceWorker from './registerServiceWorker';
6 | 
7 | ReactDOM.render(<App />, document.getElementById('root'));
8 | registerServiceWorker();
9 | 


--------------------------------------------------------------------------------
/src/App.test.js:
--------------------------------------------------------------------------------
 1 | import React from 'react';
 2 | import ReactDOM from 'react-dom';
 3 | import App from './App';
 4 | 
 5 | it('renders without crashing', () => {
 6 |   const div = document.createElement('div');
 7 |   ReactDOM.render(<App />, div);
 8 |   ReactDOM.unmountComponentAtNode(div);
 9 | });
10 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | # See https://help.github.com/ignore-files/ for more about ignoring files.
 2 | 
 3 | # dependencies
 4 | /node_modules
 5 | 
 6 | # testing
 7 | /coverage
 8 | 
 9 | # production
10 | /build
11 | 
12 | # misc
13 | .DS_Store
14 | .env.local
15 | .env.development.local
16 | .env.test.local
17 | .env.production.local
18 | 
19 | npm-debug.log*
20 | yarn-debug.log*
21 | yarn-error.log*
22 | 


--------------------------------------------------------------------------------
/public/manifest.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "short_name": "React App",
 3 |   "name": "Create React App Sample",
 4 |   "icons": [
 5 |     {
 6 |       "src": "favicon.ico",
 7 |       "sizes": "64x64 32x32 24x24 16x16",
 8 |       "type": "image/x-icon"
 9 |     }
10 |   ],
11 |   "start_url": "./index.html",
12 |   "display": "standalone",
13 |   "theme_color": "#000000",
14 |   "background_color": "#ffffff"
15 | }
16 | 


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "i-hate-lifcycle",
 3 |   "version": "0.1.0",
 4 |   "private": true,
 5 |   "dependencies": {
 6 |     "react": "^16.3.2",
 7 |     "react-dom": "^16.3.2",
 8 |     "react-scripts": "1.1.4"
 9 |   },
10 |   "scripts": {
11 |     "start": "react-scripts start",
12 |     "build": "react-scripts build",
13 |     "test": "react-scripts test --env=jsdom",
14 |     "eject": "react-scripts eject"
15 |   }
16 | }


--------------------------------------------------------------------------------
/src/App.css:
--------------------------------------------------------------------------------
 1 | .App {
 2 |   text-align: center;
 3 | }
 4 | 
 5 | .App-logo {
 6 |   animation: App-logo-spin infinite 20s linear;
 7 |   height: 80px;
 8 | }
 9 | 
10 | .App-header {
11 |   background-color: #222;
12 |   height: 150px;
13 |   padding: 20px;
14 |   color: white;
15 | }
16 | 
17 | .App-title {
18 |   font-size: 1.5em;
19 | }
20 | 
21 | .App-intro {
22 |   font-size: large;
23 | }
24 | 
25 | @keyframes App-logo-spin {
26 |   from { transform: rotate(0deg); }
27 |   to { transform: rotate(360deg); }
28 | }
29 | 


--------------------------------------------------------------------------------
/src/App.js:
--------------------------------------------------------------------------------
 1 | import React, { Component } from 'react';
 2 | import logo from './logo.svg';
 3 | import './App.css';
 4 | 
 5 | class App extends Component {
 6 |   render() {
 7 |     return (
 8 |       <div className="App">
 9 |         <header className="App-header">
10 |           <img src={logo} className="App-logo" alt="logo" />
11 |           <h1 className="App-title">Welcome to React</h1>
12 |         </header>
13 |         <p className="App-intro">
14 |           To get started, edit <code>src/App.js</code> and save to reload.
15 |         </p>
16 |       </div>
17 |     );
18 |   }
19 | }
20 | 
21 | export default App;
22 | 


--------------------------------------------------------------------------------
/public/index.html:
--------------------------------------------------------------------------------
 1 | <!DOCTYPE html>
 2 | <html lang="en">
 3 |   <head>
 4 |     <meta charset="utf-8">
 5 |     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 6 |     <meta name="theme-color" content="#000000">
 7 |     <!--
 8 |       manifest.json provides metadata used when your web app is added to the
 9 |       homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/
10 |     -->
11 |     <link rel="manifest" href="%PUBLIC_URL%/manifest.json">
12 |     <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
13 |     <!--
14 |       Notice the use of %PUBLIC_URL% in the tags above.
15 |       It will be replaced with the URL of the `public` folder during the build.
16 |       Only files inside the `public` folder can be referenced from the HTML.
17 | 
18 |       Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
19 |       work correctly both with client-side routing and a non-root public URL.
20 |       Learn how to configure a non-root public URL by running `npm run build`.
21 |     -->
22 |     <title>React App</title>
23 |   </head>
24 |   <body>
25 |     <noscript>
26 |       You need to enable JavaScript to run this app.
27 |     </noscript>
28 |     <div id="root"></div>
29 |     <!--
30 |       This HTML file is a template.
31 |       If you open it directly in the browser, you will see an empty page.
32 | 
33 |       You can add webfonts, meta tags, or analytics to this file.
34 |       The build step will place the bundled scripts into the <body> tag.
35 | 
36 |       To begin the development, run `npm start` or `yarn start`.
37 |       To create a production bundle, use `npm run build` or `yarn build`.
38 |     -->
39 |   </body>
40 | </html>
41 | 


--------------------------------------------------------------------------------
/src/logo.svg:
--------------------------------------------------------------------------------
1 | <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3">
2 |     <g fill="#61DAFB">
3 |         <path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/>
4 |         <circle cx="420.9" cy="296.5" r="45.7"/>
5 |         <path d="M520.5 78.1z"/>
6 |     </g>
7 | </svg>
8 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # Репозиторий с материалами доклада "LET'S KILL LIFECYCLE"
 2 | 
 3 | ## Материалы 
 4 | ### [OdessaJS 2018](http://odessajs.org/)
 5 | [Слайды](https://drive.google.com/open?id=1m2Yhx2FGJze91drvaRqTWPmxMZxnqojm)
 6 | 
 7 | [Video](https://youtu.be/5PM5c0EUMyE)
 8 | 
 9 | ### [FrontTalks 2018](https://events.yandex.ru/lib/talks/6358/)
10 | [Слайды](https://drive.google.com/file/d/1RyaBodMCwcoSTdwsULG5Jsng3eaWU-8h/view?usp=sharing) 
11 | 
12 | [Video](https://youtu.be/rQ2EIOnhPPg)
13 | 
14 | ### [#ITsubbotnik: technological mix 2018 Moscow](https://events.epam.com/events/itsubbotnik-technological-mix/talks/7368)
15 | [Слайды](https://drive.google.com/open?id=1Ds9i9ENOZCmKGRYK2y7aYBtvGQBkaFoR)
16 | 
17 | [Video](https://www.youtube.com/watch?v=ybu9BlEKS9c)
18 | 
19 | ### [#ITsubbotnik: technological mix 2018 Izhevsk](https://events.epam.com/events/epam-itsubbotnik-conference-izhevsk/talks/7553)
20 | 
21 | _Тут я про hook'и чуть-чуть зацепил_
22 | 
23 | [Слайды](https://drive.google.com/file/d/1DzP_YNLxx1m7ZxrZokZNAkUs4WszuPpm/view?usp=sharing)  
24 | 
25 | Video с is coming soon...
26 | 
27 | ### 🔥[JSNN #11](https://www.it52.info/events/2018-11-24-jsnn-11)🔥
28 | 
29 | [Слайды](https://drive.google.com/file/d/1C2Urx3eg39Igd_j4ybt4EFtzfrg73AqB/view?usp=sharing) 
30 | 
31 | [Video](https://www.youtube.com/watch?v=n5hlF9qVH1k)
32 | 
33 | 
34 | ## Что в репозитории
35 | С помощью [Redux Form](https://redux-form.com) реализована простая формочка с 5-ю полями.
36 | Дополнительные требования:
37 | 1. Email должен заполняться автоматически по имени. Но при условии, что пользователь 
38 | сам его не вводил.
39 | 2. При переключении типа пользователя (сотрудник или нет) мы должны поменять тип телефона. 
40 | Но введённый до этого телефон должен где запомниться, а поле очиститься.
41 | При переключении обратно, мы должны восстановить ранее введенный телефон.
42 | 3. Должно проверяться по фамилии, не является ли клиент VIP. Обычно для этого ходят на сервер. 
43 | Но для примера, просто происходит асинхронная проверка, что количество букв в фамилии 
44 | делиться на 3.
45 | 
46 | Это сделано несколькими способами:
47 | 1. [React Lifecycle](https://reactjs.org/docs/react-component.html). Ветка **lifecycle**. Просто посмотрите, как там все плохо.
48 | 2. [Redux-Saga](https://github.com/redux-saga/redux-saga). Ветка **saga**.
49 | 3. [redux-observable](https://github.com/redux-observable/redux-observable). Ветка **redux-observable**.
50 | 4. [react-redux-rxjs](https://github.com/redneckz/react-redux-rxjs). Ветка **react-redux-rxjs**. Не очень популярная, но очень классная библиотека.
51 | 5. [HOCs](https://reactjs.org/docs/higher-order-components.html). Ветка **hocs**. Решение, которое мы используем в проде.
52 | 6. [Hooks](https://reactjs.org/docs/hooks-intro.html). Ветка **hooks**. Свежее (на ноябрь 2018) решение от 
53 |    команды React.
54 | 
55 | ## Ссылки 
56 |  - [Tver.IO](https://tver.io/) - Сообщество Тверских айтишников. You are welcome :)
57 |  - [Пост](https://reactjs.org/blog/2018/03/27/update-on-async-rendering.html) об изменении lifecycle в 
58 |  React 17.
59 |  - [Пост](https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html#when-to-use-derived-state) об неправильном использовании **getDerivedStateFromProps**.
60 |  - [Видео](https://www.youtube.com/watch?v=3J9EJrvqOiM) с Talk from React Amsterdam Conference 2017 и 
61 |    [статья](https://hackernoon.com/how-to-decouple-state-and-ui-a-k-a-you-dont-need-componentwillmount-cc90b787aa37) 
62 |     на Hackernoon от Michel Weststrate (создателя MobX), о разделении представления и логики.
63 |  - [Redux Middleware](https://redux.js.org/advanced/middleware).
64 |  - [RxJS 6](https://github.com/reactivex/rxjs).
65 |  - [Развернутый ответ](https://stackoverflow.com/questions/40021344/why-use-redux-observable-over-redux-saga/40027778#40027778) на stackoverflow, в чем отличие redux-observable и redux-saga.
66 |  - [HOC](https://reactjs.org/docs/higher-order-components.html) - паттерн Higher Order Component.
67 |  - [Выступление](https://www.youtube.com/watch?v=HEqgw16l64Q) Тимофея Ткаченко "componentDidMount не нужен". 
68 |  Еще один способ избавиться от lifecycle 
69 |    
70 | 


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/src/registerServiceWorker.js:
--------------------------------------------------------------------------------
  1 | // In production, we register a service worker to serve assets from local cache.
  2 | 
  3 | // This lets the app load faster on subsequent visits in production, and gives
  4 | // it offline capabilities. However, it also means that developers (and users)
  5 | // will only see deployed updates on the "N+1" visit to a page, since previously
  6 | // cached resources are updated in the background.
  7 | 
  8 | // To learn more about the benefits of this model, read https://goo.gl/KwvDNy.
  9 | // This link also includes instructions on opting out of this behavior.
 10 | 
 11 | const isLocalhost = Boolean(
 12 |   window.location.hostname === 'localhost' ||
 13 |     // [::1] is the IPv6 localhost address.
 14 |     window.location.hostname === '[::1]' ||
 15 |     // 127.0.0.1/8 is considered localhost for IPv4.
 16 |     window.location.hostname.match(
 17 |       /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
 18 |     )
 19 | );
 20 | 
 21 | export default function register() {
 22 |   if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
 23 |     // The URL constructor is available in all browsers that support SW.
 24 |     const publicUrl = new URL(process.env.PUBLIC_URL, window.location);
 25 |     if (publicUrl.origin !== window.location.origin) {
 26 |       // Our service worker won't work if PUBLIC_URL is on a different origin
 27 |       // from what our page is served on. This might happen if a CDN is used to
 28 |       // serve assets; see https://github.com/facebookincubator/create-react-app/issues/2374
 29 |       return;
 30 |     }
 31 | 
 32 |     window.addEventListener('load', () => {
 33 |       const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
 34 | 
 35 |       if (isLocalhost) {
 36 |         // This is running on localhost. Lets check if a service worker still exists or not.
 37 |         checkValidServiceWorker(swUrl);
 38 | 
 39 |         // Add some additional logging to localhost, pointing developers to the
 40 |         // service worker/PWA documentation.
 41 |         navigator.serviceWorker.ready.then(() => {
 42 |           console.log(
 43 |             'This web app is being served cache-first by a service ' +
 44 |               'worker. To learn more, visit https://goo.gl/SC7cgQ'
 45 |           );
 46 |         });
 47 |       } else {
 48 |         // Is not local host. Just register service worker
 49 |         registerValidSW(swUrl);
 50 |       }
 51 |     });
 52 |   }
 53 | }
 54 | 
 55 | function registerValidSW(swUrl) {
 56 |   navigator.serviceWorker
 57 |     .register(swUrl)
 58 |     .then(registration => {
 59 |       registration.onupdatefound = () => {
 60 |         const installingWorker = registration.installing;
 61 |         installingWorker.onstatechange = () => {
 62 |           if (installingWorker.state === 'installed') {
 63 |             if (navigator.serviceWorker.controller) {
 64 |               // At this point, the old content will have been purged and
 65 |               // the fresh content will have been added to the cache.
 66 |               // It's the perfect time to display a "New content is
 67 |               // available; please refresh." message in your web app.
 68 |               console.log('New content is available; please refresh.');
 69 |             } else {
 70 |               // At this point, everything has been precached.
 71 |               // It's the perfect time to display a
 72 |               // "Content is cached for offline use." message.
 73 |               console.log('Content is cached for offline use.');
 74 |             }
 75 |           }
 76 |         };
 77 |       };
 78 |     })
 79 |     .catch(error => {
 80 |       console.error('Error during service worker registration:', error);
 81 |     });
 82 | }
 83 | 
 84 | function checkValidServiceWorker(swUrl) {
 85 |   // Check if the service worker can be found. If it can't reload the page.
 86 |   fetch(swUrl)
 87 |     .then(response => {
 88 |       // Ensure service worker exists, and that we really are getting a JS file.
 89 |       if (
 90 |         response.status === 404 ||
 91 |         response.headers.get('content-type').indexOf('javascript') === -1
 92 |       ) {
 93 |         // No service worker found. Probably a different app. Reload the page.
 94 |         navigator.serviceWorker.ready.then(registration => {
 95 |           registration.unregister().then(() => {
 96 |             window.location.reload();
 97 |           });
 98 |         });
 99 |       } else {
100 |         // Service worker found. Proceed as normal.
101 |         registerValidSW(swUrl);
102 |       }
103 |     })
104 |     .catch(() => {
105 |       console.log(
106 |         'No internet connection found. App is running in offline mode.'
107 |       );
108 |     });
109 | }
110 | 
111 | export function unregister() {
112 |   if ('serviceWorker' in navigator) {
113 |     navigator.serviceWorker.ready.then(registration => {
114 |       registration.unregister();
115 |     });
116 |   }
117 | }
118 | 


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