├── .gitignore
├── .travis.yml
├── LICENSE
├── README.md
├── config
    ├── env.js
    ├── jest
    │   ├── cssTransform.js
    │   └── fileTransform.js
    ├── paths.js
    ├── polyfills.js
    ├── webpack.config.dev.js
    ├── webpack.config.prod.js
    └── webpackDevServer.config.js
├── diagram.png
├── diagram.xml
├── package.json
├── public
    ├── favicon.ico
    ├── index.html
    └── manifest.json
├── scripts
    ├── build.js
    ├── start.js
    └── test.js
├── src
    ├── App.css
    ├── App.js
    ├── App.test.js
    ├── UserCreator
    │   ├── actions.js
    │   ├── index.js
    │   └── reducer.js
    ├── index.css
    ├── index.js
    ├── state
    │   ├── app.js
    │   └── users.js
    └── store.js
└── yarn.lock


/.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 | .vscode


--------------------------------------------------------------------------------
/.travis.yml:
--------------------------------------------------------------------------------
1 | language: node_js
2 | node_js:
3 |   - "8.4"


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | MIT License
 2 | 
 3 | Copyright (c) 2017 Riku Rouvila
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
  1 | # Scaling a Redux app - reusable containers
  2 | 
  3 | <img src="https://raw.githubusercontent.com/rikukissa/redux-isolated-apps/master/diagram.png" width="452" />
  4 | 
  5 | The idea here is to experiment with building Redux applications by reusing Redux applications. So basically a classic Yo Dawg situation. I'm doing this in the name of science and in the hope that future generations would have a more structured way of building user interfaces.
  6 | 
  7 | This repository functions as a sandbox for testing different methods of cluing these Redux apps together. The way I see it, this could potentially lead into more scalable Redux codebases as you would now have a concept even greater than components or containers, that both are quite low-level. Also a really practical thing you could use this for would be a bit more complex reusable components like date pickers that have a state of their own, but have to use `this.setState`, component state & other funny stuff for managing the state.
  8 | 
  9 | ### Structure of this repository
 10 | 
 11 | Currently on the master branch, I have a component called [`<UserCreator />`](https://github.com/rikukissa/redux-isolated-apps/tree/master/src/UserCreator) that has the purpose of being a component/widget/fragment that the user would use for creating new users. Basically it's just an text input and a submit button.
 12 | 
 13 | From the developer's point of view, I would want to be able to include this component anywhere in my app, without always having to manually connect to a store. So in the best case scenario, the only thing you would need is a `<UserCreator />` tag.
 14 | 
 15 | **Few design principles for `<UserCreator />`:**
 16 | - It should not know anything about being isolated
 17 |   - Its implementation should look exactly like normal container's
 18 | - It communicates to outer world only via props
 19 |   - It can only access its own state + state given to it as props
 20 | - It can be attached anywhere on the app without any additional setup
 21 | - Middleware / enhancers used in its reducer / action creator implementation should be completely independent from app's
 22 |   - e.g. Using redux-saga as a part of UserCreator does not mean it should be also added to `src/store.js`
 23 | 
 24 | I would also want it to be isolated in a way that it wouldn't share any state with other UserCreators in my app. In the future it will include a lot of logic (both async and sync), and for that reason I want to be able to leverage the action/action creator/reducer pattern Redux provides.
 25 | 
 26 | I've written a few [tests](https://github.com/rikukissa/redux-isolated-apps/blob/master/src/App.test.js) to make these requirements a bit clearer, but unfortunately in the master branch some of them are failing. You can run them by running `yarn test` or `npm test`. All the relevant code for this endeavour lives under the `src` directory.
 27 | 
 28 | **Leave an issue / a pull request if you know other ways of making Redux apps scalable or if you have other problems that you would like to solve.**
 29 | 
 30 | ## Methods & libraries I've tried so far
 31 | 
 32 | ### Nested stores
 33 | ![](https://travis-ci.org/rikukissa/redux-isolated-apps.svg?branch=substores)
 34 | [Pull request](https://github.com/rikukissa/redux-isolated-apps/pull/2)
 35 | 
 36 | I got this idea from [Redux's documentation](http://redux.js.org/docs/recipes/IsolatingSubapps.html). It's fairly simple to see what's going on just by looking at the code and I actually managed to get everything working with this method as well. At first my main concern was whether the tooling will play well with multiple stores, but it turns out that at least Redux DevTools lets you choose which store you want to observe.
 37 | 
 38 | #### Pros
 39 | - Minimalistic approach, easy to understand
 40 | - No additional dependencies needed
 41 | - Minimal code changes required when isolating pieces of UI
 42 | - Easy integration with redux-loop, redux-forms etc
 43 | - You can reuse the component dynamically anywhere without needing to explicitely define it in reducer
 44 |   - App store state remains a bit cleaner
 45 | 
 46 | #### Cons/Challenges
 47 | ##### Case 1.
 48 | **Example case**
 49 | > I want to notify the parent component about created user **after** it has been succesfully stored to our API
 50 | 
 51 | ```js
 52 | <UserCreator onUserCreated={/* call this after save */} />
 53 | ```
 54 | 
 55 | **The problem**
 56 | > How do I call **this.props.onUserCreated** as a consequence of a dispatched **MY_NESTED/USER_SAVED_SUCCESS**?
 57 | 
 58 | 
 59 | **Possible solutions**
 60 | Since we are creating a nested store for our component, we might as well apply middlewares to that store. We could, for instance create a "bridge" between internal actions and prop callback calls. The underlying middleware would take care of calling these defined methods when ever a suitable action is dispatched.
 61 | 
 62 | ```js
 63 | // like mapStateToProps & mapDispatchToProps
 64 | function actionsToProps(props) {
 65 |   return {
 66 |     /* dispatched action */           /* callback prop call */
 67 |     [CREATE_USER]: (state, action) => props.onUserCreated({ name: state.name })
 68 |   };
 69 | }
 70 | ```
 71 | 
 72 | The thing that I don't like about this approach is, that you now have to expose action types to components / containers. It seems like a small thing that I would be willing to live with, but I have a feeling it might be a telltale sign of an architectural problem.
 73 | 
 74 | 
 75 | 
 76 | ##### Case 2.
 77 | 
 78 | **Example case**
 79 | > I want to create a button for clearing all UserCreator inputs
 80 | 
 81 | 🙃  This is where it gets even more complicated.
 82 | 
 83 | **The problem**
 84 | > How do I trigger **MY_NESTED/CLEAR** as a consequence of **TOP_LEVEL/CLEAR_ALL**?
 85 | 
 86 | 
 87 | The only semi-clean way of doing it that I could come up with, would be to create a `top-level action -> nested store action` bridge. Something similar to what you saw above, but with 
 88 | 
 89 | ```js
 90 | // like mapStateToProps & mapDispatchToProps & actionsToProps
 91 | function actionsToActions() {
 92 |   return {
 93 |     /* top-level */ /* nested */
 94 |     [CLEAR_ALL]: CLEAR_INPUT
 95 |   };
 96 | }
 97 | ```
 98 | 
 99 | However, it would still have the same problem with components knowing about actions. On top of that, as far as I know this impossible to achieve with a vanilla Redux store instance. This is because a Redux store doesn't provide a way of listening actions it receives. This is why we used a middleware to solve the previous problem. Now we can't really do that, because we are not no longer in control of the store which exists outside the scope of our UserCreator component 😔
100 | 
101 | **Possible solutions**
102 | I wish I had one.
103 | 
104 | ---
105 | 
106 | ### [redux-subspace](https://github.com/ioof-holdings/redux-subspace)
107 | ![](https://travis-ci.org/rikukissa/redux-isolated-apps.svg?branch=subspaces)
108 | [Pull request](https://github.com/rikukissa/redux-isolated-apps/pull/3)
109 | 
110 | >After using this method in production for couple of months now, I already feel like some parts of the codebase become overly complicated. Most of it is because it's quite difficult to see just by looking at the code to which "subspace" the component / actions belong to. This can potentially be remedied by avoiding the usage of `globalAction` and coming up with some way of achieving your goal just by using component props. Other thing I would advice against is the usage of [wormholes](https://github.com/ioof-holdings/redux-subspace/blob/master/docs/advanced/GlobalState.md#wormholes). It's most likely better to pass the required data down as props.
111 | **Would still recommend this library and I'm keen to see how it evolves in the future**
112 | 
113 | I bumped into this by accident while googling this subject. At first the documentation was a bit off-putting, but once I got desperate enough, I decided to give it a go. I definitely recommend checking it out, since it has been easily the best solution I've found so far. Once you start using it, you will find the documentation actually quite nicely structured.
114 | 
115 | Besides just offering a solution to the problem I described above, I wanted to make sure it also works with other libraries we're often using in our apps. There are currently 2 different branches I made for this:
116 | - ![](https://travis-ci.org/rikukissa/redux-isolated-apps.svg?branch=subspaces-redux-loop) [redux-loop](https://github.com/rikukissa/redux-isolated-apps/pull/4)
117 | - ![](https://travis-ci.org/rikukissa/redux-isolated-apps.svg?branch=subspaces-redux-form) [redux-form](https://github.com/rikukissa/redux-isolated-apps/pull/6)
118 | 
119 | **Pros**:
120 | - Easy to use, well tested & documented
121 | - Integrates well with middlewares and store enhancers like redux-saga, redux-observable & redux-loop
122 | 
123 | **Cons:**
124 | - Might hurt the readability of your code in the long run
125 | - Subspaced component's state becomes a part of your app's store state, which by default means, that you have to define a location for that explicitly in your reducer. This makes it a bit tricky to dynamically add new subspaced components. However, there is an additional library [redux-dynamic-reducer](https://github.com/ioof-holdings/redux-dynamic-reducer) for addressing this problem.
126 | - The reducer & action creators are dependant on the main app's middlewares / store enhancers. Using redux-thunk / redux-loop in the subspaced component's logic forces the app to also have them installed. This is not a problem with substores.
127 | - It didn't support redux-loop when I first started using it, but I managed to fix this by writing a wrapper function, that now can be found as the [`redux-subspace-loop`](https://github.com/ioof-holdings/redux-subspace/tree/master/packages/redux-subspace-loop) package on npm.
128 | 
129 | This project was bootstrapped with [Create React App](https://github.com/facebookincubator/create-react-app).
130 | 


--------------------------------------------------------------------------------
/config/env.js:
--------------------------------------------------------------------------------
 1 | 'use strict';
 2 | 
 3 | const fs = require('fs');
 4 | const path = require('path');
 5 | const paths = require('./paths');
 6 | 
 7 | // Make sure that including paths.js after env.js will read .env variables.
 8 | delete require.cache[require.resolve('./paths')];
 9 | 
10 | const NODE_ENV = process.env.NODE_ENV;
11 | if (!NODE_ENV) {
12 |   throw new Error(
13 |     'The NODE_ENV environment variable is required but was not specified.'
14 |   );
15 | }
16 | 
17 | // https://github.com/bkeepers/dotenv#what-other-env-files-can-i-use
18 | var dotenvFiles = [
19 |   `${paths.dotenv}.${NODE_ENV}.local`,
20 |   `${paths.dotenv}.${NODE_ENV}`,
21 |   // Don't include `.env.local` for `test` environment
22 |   // since normally you expect tests to produce the same
23 |   // results for everyone
24 |   NODE_ENV !== 'test' && `${paths.dotenv}.local`,
25 |   paths.dotenv,
26 | ].filter(Boolean);
27 | 
28 | // Load environment variables from .env* files. Suppress warnings using silent
29 | // if this file is missing. dotenv will never modify any environment variables
30 | // that have already been set.
31 | // https://github.com/motdotla/dotenv
32 | dotenvFiles.forEach(dotenvFile => {
33 |   if (fs.existsSync(dotenvFile)) {
34 |     require('dotenv').config({
35 |       path: dotenvFile,
36 |     });
37 |   }
38 | });
39 | 
40 | // We support resolving modules according to `NODE_PATH`.
41 | // This lets you use absolute paths in imports inside large monorepos:
42 | // https://github.com/facebookincubator/create-react-app/issues/253.
43 | // It works similar to `NODE_PATH` in Node itself:
44 | // https://nodejs.org/api/modules.html#modules_loading_from_the_global_folders
45 | // Note that unlike in Node, only *relative* paths from `NODE_PATH` are honored.
46 | // Otherwise, we risk importing Node.js core modules into an app instead of Webpack shims.
47 | // https://github.com/facebookincubator/create-react-app/issues/1023#issuecomment-265344421
48 | // We also resolve them to make sure all tools using them work consistently.
49 | const appDirectory = fs.realpathSync(process.cwd());
50 | process.env.NODE_PATH = (process.env.NODE_PATH || '')
51 |   .split(path.delimiter)
52 |   .filter(folder => folder && !path.isAbsolute(folder))
53 |   .map(folder => path.resolve(appDirectory, folder))
54 |   .join(path.delimiter);
55 | 
56 | // Grab NODE_ENV and REACT_APP_* environment variables and prepare them to be
57 | // injected into the application via DefinePlugin in Webpack configuration.
58 | const REACT_APP = /^REACT_APP_/i;
59 | 
60 | function getClientEnvironment(publicUrl) {
61 |   const raw = Object.keys(process.env)
62 |     .filter(key => REACT_APP.test(key))
63 |     .reduce(
64 |       (env, key) => {
65 |         env[key] = process.env[key];
66 |         return env;
67 |       },
68 |       {
69 |         // Useful for determining whether we’re running in production mode.
70 |         // Most importantly, it switches React into the correct mode.
71 |         NODE_ENV: process.env.NODE_ENV || 'development',
72 |         // Useful for resolving the correct path to static assets in `public`.
73 |         // For example, <img src={process.env.PUBLIC_URL + '/img/logo.png'} />.
74 |         // This should only be used as an escape hatch. Normally you would put
75 |         // images into the `src` and `import` them in code to get their paths.
76 |         PUBLIC_URL: publicUrl,
77 |       }
78 |     );
79 |   // Stringify all values so we can feed into Webpack DefinePlugin
80 |   const stringified = {
81 |     'process.env': Object.keys(raw).reduce((env, key) => {
82 |       env[key] = JSON.stringify(raw[key]);
83 |       return env;
84 |     }, {}),
85 |   };
86 | 
87 |   return { raw, stringified };
88 | }
89 | 
90 | module.exports = getClientEnvironment;
91 | 


--------------------------------------------------------------------------------
/config/jest/cssTransform.js:
--------------------------------------------------------------------------------
 1 | 'use strict';
 2 | 
 3 | // This is a custom Jest transformer turning style imports into empty objects.
 4 | // http://facebook.github.io/jest/docs/tutorial-webpack.html
 5 | 
 6 | module.exports = {
 7 |   process() {
 8 |     return 'module.exports = {};';
 9 |   },
10 |   getCacheKey() {
11 |     // The output is always the same.
12 |     return 'cssTransform';
13 |   },
14 | };
15 | 


--------------------------------------------------------------------------------
/config/jest/fileTransform.js:
--------------------------------------------------------------------------------
 1 | 'use strict';
 2 | 
 3 | const path = require('path');
 4 | 
 5 | // This is a custom Jest transformer turning file imports into filenames.
 6 | // http://facebook.github.io/jest/docs/tutorial-webpack.html
 7 | 
 8 | module.exports = {
 9 |   process(src, filename) {
10 |     return `module.exports = ${JSON.stringify(path.basename(filename))};`;
11 |   },
12 | };
13 | 


--------------------------------------------------------------------------------
/config/paths.js:
--------------------------------------------------------------------------------
 1 | 'use strict';
 2 | 
 3 | const path = require('path');
 4 | const fs = require('fs');
 5 | const url = require('url');
 6 | 
 7 | // Make sure any symlinks in the project folder are resolved:
 8 | // https://github.com/facebookincubator/create-react-app/issues/637
 9 | const appDirectory = fs.realpathSync(process.cwd());
10 | const resolveApp = relativePath => path.resolve(appDirectory, relativePath);
11 | 
12 | const envPublicUrl = process.env.PUBLIC_URL;
13 | 
14 | function ensureSlash(path, needsSlash) {
15 |   const hasSlash = path.endsWith('/');
16 |   if (hasSlash && !needsSlash) {
17 |     return path.substr(path, path.length - 1);
18 |   } else if (!hasSlash && needsSlash) {
19 |     return `${path}/`;
20 |   } else {
21 |     return path;
22 |   }
23 | }
24 | 
25 | const getPublicUrl = appPackageJson =>
26 |   envPublicUrl || require(appPackageJson).homepage;
27 | 
28 | // We use `PUBLIC_URL` environment variable or "homepage" field to infer
29 | // "public path" at which the app is served.
30 | // Webpack needs to know it to put the right <script> hrefs into HTML even in
31 | // single-page apps that may serve index.html for nested URLs like /todos/42.
32 | // We can't use a relative path in HTML because we don't want to load something
33 | // like /todos/42/static/js/bundle.7289d.js. We have to know the root.
34 | function getServedPath(appPackageJson) {
35 |   const publicUrl = getPublicUrl(appPackageJson);
36 |   const servedUrl =
37 |     envPublicUrl || (publicUrl ? url.parse(publicUrl).pathname : '/');
38 |   return ensureSlash(servedUrl, true);
39 | }
40 | 
41 | // config after eject: we're in ./config/
42 | module.exports = {
43 |   dotenv: resolveApp('.env'),
44 |   appBuild: resolveApp('build'),
45 |   appPublic: resolveApp('public'),
46 |   appHtml: resolveApp('public/index.html'),
47 |   appIndexJs: resolveApp('src/index.js'),
48 |   appPackageJson: resolveApp('package.json'),
49 |   appSrc: resolveApp('src'),
50 |   yarnLockFile: resolveApp('yarn.lock'),
51 |   testsSetup: resolveApp('src/setupTests.js'),
52 |   appNodeModules: resolveApp('node_modules'),
53 |   publicUrl: getPublicUrl(resolveApp('package.json')),
54 |   servedPath: getServedPath(resolveApp('package.json')),
55 | };
56 | 


--------------------------------------------------------------------------------
/config/polyfills.js:
--------------------------------------------------------------------------------
 1 | 'use strict';
 2 | 
 3 | if (typeof Promise === 'undefined') {
 4 |   // Rejection tracking prevents a common issue where React gets into an
 5 |   // inconsistent state due to an error, but it gets swallowed by a Promise,
 6 |   // and the user has no idea what causes React's erratic future behavior.
 7 |   require('promise/lib/rejection-tracking').enable();
 8 |   window.Promise = require('promise/lib/es6-extensions.js');
 9 | }
10 | 
11 | // fetch() polyfill for making API calls.
12 | require('whatwg-fetch');
13 | 
14 | // Object.assign() is commonly used with React.
15 | // It will use the native implementation if it's present and isn't buggy.
16 | Object.assign = require('object-assign');
17 | 


--------------------------------------------------------------------------------
/config/webpack.config.dev.js:
--------------------------------------------------------------------------------
  1 | 'use strict';
  2 | 
  3 | const autoprefixer = require('autoprefixer');
  4 | const path = require('path');
  5 | const webpack = require('webpack');
  6 | const HtmlWebpackPlugin = require('html-webpack-plugin');
  7 | const CaseSensitivePathsPlugin = require('case-sensitive-paths-webpack-plugin');
  8 | const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
  9 | const WatchMissingNodeModulesPlugin = require('react-dev-utils/WatchMissingNodeModulesPlugin');
 10 | const eslintFormatter = require('react-dev-utils/eslintFormatter');
 11 | const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
 12 | const getClientEnvironment = require('./env');
 13 | const paths = require('./paths');
 14 | 
 15 | // Webpack uses `publicPath` to determine where the app is being served from.
 16 | // In development, we always serve from the root. This makes config easier.
 17 | const publicPath = '/';
 18 | // `publicUrl` is just like `publicPath`, but we will provide it to our app
 19 | // as %PUBLIC_URL% in `index.html` and `process.env.PUBLIC_URL` in JavaScript.
 20 | // Omit trailing slash as %PUBLIC_PATH%/xyz looks better than %PUBLIC_PATH%xyz.
 21 | const publicUrl = '';
 22 | // Get environment variables to inject into our app.
 23 | const env = getClientEnvironment(publicUrl);
 24 | 
 25 | // This is the development configuration.
 26 | // It is focused on developer experience and fast rebuilds.
 27 | // The production configuration is different and lives in a separate file.
 28 | module.exports = {
 29 |   // You may want 'eval' instead if you prefer to see the compiled output in DevTools.
 30 |   // See the discussion in https://github.com/facebookincubator/create-react-app/issues/343.
 31 |   devtool: 'inline-source-map',
 32 |   // These are the "entry points" to our application.
 33 |   // This means they will be the "root" imports that are included in JS bundle.
 34 |   // The first two entry points enable "hot" CSS and auto-refreshes for JS.
 35 |   entry: [
 36 |     // Include an alternative client for WebpackDevServer. A client's job is to
 37 |     // connect to WebpackDevServer by a socket and get notified about changes.
 38 |     // When you save a file, the client will either apply hot updates (in case
 39 |     // of CSS changes), or refresh the page (in case of JS changes). When you
 40 |     // make a syntax error, this client will display a syntax error overlay.
 41 |     // Note: instead of the default WebpackDevServer client, we use a custom one
 42 |     // to bring better experience for Create React App users. You can replace
 43 |     // the line below with these two lines if you prefer the stock client:
 44 |     // require.resolve('webpack-dev-server/client') + '?/',
 45 |     // require.resolve('webpack/hot/dev-server'),
 46 |     require.resolve('react-dev-utils/webpackHotDevClient'),
 47 |     // We ship a few polyfills by default:
 48 |     require.resolve('./polyfills'),
 49 |     // Errors should be considered fatal in development
 50 |     require.resolve('react-error-overlay'),
 51 |     // Finally, this is your app's code:
 52 |     paths.appIndexJs,
 53 |     // We include the app code last so that if there is a runtime error during
 54 |     // initialization, it doesn't blow up the WebpackDevServer client, and
 55 |     // changing JS code would still trigger a refresh.
 56 |   ],
 57 |   output: {
 58 |     // Next line is not used in dev but WebpackDevServer crashes without it:
 59 |     path: paths.appBuild,
 60 |     // Add /* filename */ comments to generated require()s in the output.
 61 |     pathinfo: true,
 62 |     // This does not produce a real file. It's just the virtual path that is
 63 |     // served by WebpackDevServer in development. This is the JS bundle
 64 |     // containing code from all our entry points, and the Webpack runtime.
 65 |     filename: 'static/js/bundle.js',
 66 |     // There are also additional JS chunk files if you use code splitting.
 67 |     chunkFilename: 'static/js/[name].chunk.js',
 68 |     // This is the URL that app is served from. We use "/" in development.
 69 |     publicPath: publicPath,
 70 |     // Point sourcemap entries to original disk location (format as URL on Windows)
 71 |     devtoolModuleFilenameTemplate: info =>
 72 |       path.resolve(info.absoluteResourcePath).replace(/\\/g, '/'),
 73 |   },
 74 |   resolve: {
 75 |     // This allows you to set a fallback for where Webpack should look for modules.
 76 |     // We placed these paths second because we want `node_modules` to "win"
 77 |     // if there are any conflicts. This matches Node resolution mechanism.
 78 |     // https://github.com/facebookincubator/create-react-app/issues/253
 79 |     modules: ['node_modules', paths.appNodeModules].concat(
 80 |       // It is guaranteed to exist because we tweak it in `env.js`
 81 |       process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
 82 |     ),
 83 |     // These are the reasonable defaults supported by the Node ecosystem.
 84 |     // We also include JSX as a common component filename extension to support
 85 |     // some tools, although we do not recommend using it, see:
 86 |     // https://github.com/facebookincubator/create-react-app/issues/290
 87 |     // `web` extension prefixes have been added for better support
 88 |     // for React Native Web.
 89 |     extensions: ['.web.js', '.js', '.json', '.web.jsx', '.jsx'],
 90 |     alias: {
 91 | 
 92 |       // Support React Native Web
 93 |       // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
 94 |       'react-native': 'react-native-web',
 95 |     },
 96 |     plugins: [
 97 |       // Prevents users from importing files from outside of src/ (or node_modules/).
 98 |       // This often causes confusion because we only process files within src/ with babel.
 99 |       // To fix this, we prevent you from importing files out of src/ -- if you'd like to,
100 |       // please link the files into your node_modules/ and let module-resolution kick in.
101 |       // Make sure your source files are compiled, as they will not be processed in any way.
102 |       new ModuleScopePlugin(paths.appSrc),
103 |     ],
104 |   },
105 |   module: {
106 |     strictExportPresence: true,
107 |     rules: [
108 |       // TODO: Disable require.ensure as it's not a standard language feature.
109 |       // We are waiting for https://github.com/facebookincubator/create-react-app/issues/2176.
110 |       // { parser: { requireEnsure: false } },
111 | 
112 |       // First, run the linter.
113 |       // It's important to do this before Babel processes the JS.
114 |       {
115 |         test: /\.(js|jsx)$/,
116 |         enforce: 'pre',
117 |         use: [
118 |           {
119 |             options: {
120 |               formatter: eslintFormatter,
121 | 
122 |             },
123 |             loader: require.resolve('eslint-loader'),
124 |           },
125 |         ],
126 |         include: paths.appSrc,
127 |       },
128 |       // ** ADDING/UPDATING LOADERS **
129 |       // The "file" loader handles all assets unless explicitly excluded.
130 |       // The `exclude` list *must* be updated with every change to loader extensions.
131 |       // When adding a new loader, you must add its `test`
132 |       // as a new entry in the `exclude` list for "file" loader.
133 | 
134 |       // "file" loader makes sure those assets get served by WebpackDevServer.
135 |       // When you `import` an asset, you get its (virtual) filename.
136 |       // In production, they would get copied to the `build` folder.
137 |       {
138 |         exclude: [
139 |           /\.html$/,
140 |           /\.(js|jsx)$/,
141 |           /\.css$/,
142 |           /\.json$/,
143 |           /\.bmp$/,
144 |           /\.gif$/,
145 |           /\.jpe?g$/,
146 |           /\.png$/,
147 |         ],
148 |         loader: require.resolve('file-loader'),
149 |         options: {
150 |           name: 'static/media/[name].[hash:8].[ext]',
151 |         },
152 |       },
153 |       // "url" loader works like "file" loader except that it embeds assets
154 |       // smaller than specified limit in bytes as data URLs to avoid requests.
155 |       // A missing `test` is equivalent to a match.
156 |       {
157 |         test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/],
158 |         loader: require.resolve('url-loader'),
159 |         options: {
160 |           limit: 10000,
161 |           name: 'static/media/[name].[hash:8].[ext]',
162 |         },
163 |       },
164 |       // Process JS with Babel.
165 |       {
166 |         test: /\.(js|jsx)$/,
167 |         include: paths.appSrc,
168 |         loader: require.resolve('babel-loader'),
169 |         options: {
170 | 
171 |           // This is a feature of `babel-loader` for webpack (not Babel itself).
172 |           // It enables caching results in ./node_modules/.cache/babel-loader/
173 |           // directory for faster rebuilds.
174 |           cacheDirectory: true,
175 |         },
176 |       },
177 |       // "postcss" loader applies autoprefixer to our CSS.
178 |       // "css" loader resolves paths in CSS and adds assets as dependencies.
179 |       // "style" loader turns CSS into JS modules that inject <style> tags.
180 |       // In production, we use a plugin to extract that CSS to a file, but
181 |       // in development "style" loader enables hot editing of CSS.
182 |       {
183 |         test: /\.css$/,
184 |         use: [
185 |           require.resolve('style-loader'),
186 |           {
187 |             loader: require.resolve('css-loader'),
188 |             options: {
189 |               importLoaders: 1,
190 |             },
191 |           },
192 |           {
193 |             loader: require.resolve('postcss-loader'),
194 |             options: {
195 |               // Necessary for external CSS imports to work
196 |               // https://github.com/facebookincubator/create-react-app/issues/2677
197 |               ident: 'postcss',
198 |               plugins: () => [
199 |                 require('postcss-flexbugs-fixes'),
200 |                 autoprefixer({
201 |                   browsers: [
202 |                     '>1%',
203 |                     'last 4 versions',
204 |                     'Firefox ESR',
205 |                     'not ie < 9', // React doesn't support IE8 anyway
206 |                   ],
207 |                   flexbox: 'no-2009',
208 |                 }),
209 |               ],
210 |             },
211 |           },
212 |         ],
213 |       },
214 |       // ** STOP ** Are you adding a new loader?
215 |       // Remember to add the new extension(s) to the "file" loader exclusion list.
216 |     ],
217 |   },
218 |   plugins: [
219 |     // Makes some environment variables available in index.html.
220 |     // The public URL is available as %PUBLIC_URL% in index.html, e.g.:
221 |     // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
222 |     // In development, this will be an empty string.
223 |     new InterpolateHtmlPlugin(env.raw),
224 |     // Generates an `index.html` file with the <script> injected.
225 |     new HtmlWebpackPlugin({
226 |       inject: true,
227 |       template: paths.appHtml,
228 |     }),
229 |     // Add module names to factory functions so they appear in browser profiler.
230 |     new webpack.NamedModulesPlugin(),
231 |     // Makes some environment variables available to the JS code, for example:
232 |     // if (process.env.NODE_ENV === 'development') { ... }. See `./env.js`.
233 |     new webpack.DefinePlugin(env.stringified),
234 |     // This is necessary to emit hot updates (currently CSS only):
235 |     new webpack.HotModuleReplacementPlugin(),
236 |     // Watcher doesn't work well if you mistype casing in a path so we use
237 |     // a plugin that prints an error when you attempt to do this.
238 |     // See https://github.com/facebookincubator/create-react-app/issues/240
239 |     new CaseSensitivePathsPlugin(),
240 |     // If you require a missing module and then `npm install` it, you still have
241 |     // to restart the development server for Webpack to discover it. This plugin
242 |     // makes the discovery automatic so you don't have to restart.
243 |     // See https://github.com/facebookincubator/create-react-app/issues/186
244 |     new WatchMissingNodeModulesPlugin(paths.appNodeModules),
245 |     // Moment.js is an extremely popular library that bundles large locale files
246 |     // by default due to how Webpack interprets its code. This is a practical
247 |     // solution that requires the user to opt into importing specific locales.
248 |     // https://github.com/jmblog/how-to-optimize-momentjs-with-webpack
249 |     // You can remove this if you don't use Moment.js:
250 |     new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
251 |   ],
252 |   // Some libraries import Node modules but don't use them in the browser.
253 |   // Tell Webpack to provide empty mocks for them so importing them works.
254 |   node: {
255 |     dgram: 'empty',
256 |     fs: 'empty',
257 |     net: 'empty',
258 |     tls: 'empty',
259 |   },
260 |   // Turn off performance hints during development because we don't do any
261 |   // splitting or minification in interest of speed. These warnings become
262 |   // cumbersome.
263 |   performance: {
264 |     hints: false,
265 |   },
266 | };
267 | 


--------------------------------------------------------------------------------
/config/webpack.config.prod.js:
--------------------------------------------------------------------------------
  1 | 'use strict';
  2 | 
  3 | const autoprefixer = require('autoprefixer');
  4 | const path = require('path');
  5 | const webpack = require('webpack');
  6 | const HtmlWebpackPlugin = require('html-webpack-plugin');
  7 | const ExtractTextPlugin = require('extract-text-webpack-plugin');
  8 | const ManifestPlugin = require('webpack-manifest-plugin');
  9 | const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
 10 | const SWPrecacheWebpackPlugin = require('sw-precache-webpack-plugin');
 11 | const eslintFormatter = require('react-dev-utils/eslintFormatter');
 12 | const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
 13 | const paths = require('./paths');
 14 | const getClientEnvironment = require('./env');
 15 | 
 16 | // Webpack uses `publicPath` to determine where the app is being served from.
 17 | // It requires a trailing slash, or the file assets will get an incorrect path.
 18 | const publicPath = paths.servedPath;
 19 | // Some apps do not use client-side routing with pushState.
 20 | // For these, "homepage" can be set to "." to enable relative asset paths.
 21 | const shouldUseRelativeAssetPaths = publicPath === './';
 22 | // `publicUrl` is just like `publicPath`, but we will provide it to our app
 23 | // as %PUBLIC_URL% in `index.html` and `process.env.PUBLIC_URL` in JavaScript.
 24 | // Omit trailing slash as %PUBLIC_URL%/xyz looks better than %PUBLIC_URL%xyz.
 25 | const publicUrl = publicPath.slice(0, -1);
 26 | // Get environment variables to inject into our app.
 27 | const env = getClientEnvironment(publicUrl);
 28 | 
 29 | // Assert this just to be safe.
 30 | // Development builds of React are slow and not intended for production.
 31 | if (env.stringified['process.env'].NODE_ENV !== '"production"') {
 32 |   throw new Error('Production builds must have NODE_ENV=production.');
 33 | }
 34 | 
 35 | // Note: defined here because it will be used more than once.
 36 | const cssFilename = 'static/css/[name].[contenthash:8].css';
 37 | 
 38 | // ExtractTextPlugin expects the build output to be flat.
 39 | // (See https://github.com/webpack-contrib/extract-text-webpack-plugin/issues/27)
 40 | // However, our output is structured with css, js and media folders.
 41 | // To have this structure working with relative paths, we have to use custom options.
 42 | const extractTextPluginOptions = shouldUseRelativeAssetPaths
 43 |   ? // Making sure that the publicPath goes back to to build folder.
 44 |     { publicPath: Array(cssFilename.split('/').length).join('../') }
 45 |   : {};
 46 | 
 47 | // This is the production configuration.
 48 | // It compiles slowly and is focused on producing a fast and minimal bundle.
 49 | // The development configuration is different and lives in a separate file.
 50 | module.exports = {
 51 |   // Don't attempt to continue if there are any errors.
 52 |   bail: true,
 53 |   // We generate sourcemaps in production. This is slow but gives good results.
 54 |   // You can exclude the *.map files from the build during deployment.
 55 |   devtool: 'source-map',
 56 |   // In production, we only want to load the polyfills and the app code.
 57 |   entry: [require.resolve('./polyfills'), paths.appIndexJs],
 58 |   output: {
 59 |     // The build folder.
 60 |     path: paths.appBuild,
 61 |     // Generated JS file names (with nested folders).
 62 |     // There will be one main bundle, and one file per asynchronous chunk.
 63 |     // We don't currently advertise code splitting but Webpack supports it.
 64 |     filename: 'static/js/[name].[chunkhash:8].js',
 65 |     chunkFilename: 'static/js/[name].[chunkhash:8].chunk.js',
 66 |     // We inferred the "public path" (such as / or /my-project) from homepage.
 67 |     publicPath: publicPath,
 68 |     // Point sourcemap entries to original disk location (format as URL on Windows)
 69 |     devtoolModuleFilenameTemplate: info =>
 70 |       path
 71 |         .relative(paths.appSrc, info.absoluteResourcePath)
 72 |         .replace(/\\/g, '/'),
 73 |   },
 74 |   resolve: {
 75 |     // This allows you to set a fallback for where Webpack should look for modules.
 76 |     // We placed these paths second because we want `node_modules` to "win"
 77 |     // if there are any conflicts. This matches Node resolution mechanism.
 78 |     // https://github.com/facebookincubator/create-react-app/issues/253
 79 |     modules: ['node_modules', paths.appNodeModules].concat(
 80 |       // It is guaranteed to exist because we tweak it in `env.js`
 81 |       process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
 82 |     ),
 83 |     // These are the reasonable defaults supported by the Node ecosystem.
 84 |     // We also include JSX as a common component filename extension to support
 85 |     // some tools, although we do not recommend using it, see:
 86 |     // https://github.com/facebookincubator/create-react-app/issues/290
 87 |     // `web` extension prefixes have been added for better support
 88 |     // for React Native Web.
 89 |     extensions: ['.web.js', '.js', '.json', '.web.jsx', '.jsx'],
 90 |     alias: {
 91 |       
 92 |       // Support React Native Web
 93 |       // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
 94 |       'react-native': 'react-native-web',
 95 |     },
 96 |     plugins: [
 97 |       // Prevents users from importing files from outside of src/ (or node_modules/).
 98 |       // This often causes confusion because we only process files within src/ with babel.
 99 |       // To fix this, we prevent you from importing files out of src/ -- if you'd like to,
100 |       // please link the files into your node_modules/ and let module-resolution kick in.
101 |       // Make sure your source files are compiled, as they will not be processed in any way.
102 |       new ModuleScopePlugin(paths.appSrc),
103 |     ],
104 |   },
105 |   module: {
106 |     strictExportPresence: true,
107 |     rules: [
108 |       // TODO: Disable require.ensure as it's not a standard language feature.
109 |       // We are waiting for https://github.com/facebookincubator/create-react-app/issues/2176.
110 |       // { parser: { requireEnsure: false } },
111 | 
112 |       // First, run the linter.
113 |       // It's important to do this before Babel processes the JS.
114 |       {
115 |         test: /\.(js|jsx)$/,
116 |         enforce: 'pre',
117 |         use: [
118 |           {
119 |             options: {
120 |               formatter: eslintFormatter,
121 |               
122 |             },
123 |             loader: require.resolve('eslint-loader'),
124 |           },
125 |         ],
126 |         include: paths.appSrc,
127 |       },
128 |       // ** ADDING/UPDATING LOADERS **
129 |       // The "file" loader handles all assets unless explicitly excluded.
130 |       // The `exclude` list *must* be updated with every change to loader extensions.
131 |       // When adding a new loader, you must add its `test`
132 |       // as a new entry in the `exclude` list in the "file" loader.
133 | 
134 |       // "file" loader makes sure those assets end up in the `build` folder.
135 |       // When you `import` an asset, you get its filename.
136 |       {
137 |         exclude: [
138 |           /\.html$/,
139 |           /\.(js|jsx)$/,
140 |           /\.css$/,
141 |           /\.json$/,
142 |           /\.bmp$/,
143 |           /\.gif$/,
144 |           /\.jpe?g$/,
145 |           /\.png$/,
146 |         ],
147 |         loader: require.resolve('file-loader'),
148 |         options: {
149 |           name: 'static/media/[name].[hash:8].[ext]',
150 |         },
151 |       },
152 |       // "url" loader works just like "file" loader but it also embeds
153 |       // assets smaller than specified size as data URLs to avoid requests.
154 |       {
155 |         test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/],
156 |         loader: require.resolve('url-loader'),
157 |         options: {
158 |           limit: 10000,
159 |           name: 'static/media/[name].[hash:8].[ext]',
160 |         },
161 |       },
162 |       // Process JS with Babel.
163 |       {
164 |         test: /\.(js|jsx)$/,
165 |         include: paths.appSrc,
166 |         loader: require.resolve('babel-loader'),
167 |         options: {
168 |           
169 |           compact: true,
170 |         },
171 |       },
172 |       // The notation here is somewhat confusing.
173 |       // "postcss" loader applies autoprefixer to our CSS.
174 |       // "css" loader resolves paths in CSS and adds assets as dependencies.
175 |       // "style" loader normally turns CSS into JS modules injecting <style>,
176 |       // but unlike in development configuration, we do something different.
177 |       // `ExtractTextPlugin` first applies the "postcss" and "css" loaders
178 |       // (second argument), then grabs the result CSS and puts it into a
179 |       // separate file in our build process. This way we actually ship
180 |       // a single CSS file in production instead of JS code injecting <style>
181 |       // tags. If you use code splitting, however, any async bundles will still
182 |       // use the "style" loader inside the async code so CSS from them won't be
183 |       // in the main CSS file.
184 |       {
185 |         test: /\.css$/,
186 |         loader: ExtractTextPlugin.extract(
187 |           Object.assign(
188 |             {
189 |               fallback: require.resolve('style-loader'),
190 |               use: [
191 |                 {
192 |                   loader: require.resolve('css-loader'),
193 |                   options: {
194 |                     importLoaders: 1,
195 |                     minimize: true,
196 |                     sourceMap: true,
197 |                   },
198 |                 },
199 |                 {
200 |                   loader: require.resolve('postcss-loader'),
201 |                   options: {
202 |                     // Necessary for external CSS imports to work
203 |                     // https://github.com/facebookincubator/create-react-app/issues/2677
204 |                     ident: 'postcss',
205 |                     plugins: () => [
206 |                       require('postcss-flexbugs-fixes'),
207 |                       autoprefixer({
208 |                         browsers: [
209 |                           '>1%',
210 |                           'last 4 versions',
211 |                           'Firefox ESR',
212 |                           'not ie < 9', // React doesn't support IE8 anyway
213 |                         ],
214 |                         flexbox: 'no-2009',
215 |                       }),
216 |                     ],
217 |                   },
218 |                 },
219 |               ],
220 |             },
221 |             extractTextPluginOptions
222 |           )
223 |         ),
224 |         // Note: this won't work without `new ExtractTextPlugin()` in `plugins`.
225 |       },
226 |       // ** STOP ** Are you adding a new loader?
227 |       // Remember to add the new extension(s) to the "file" loader exclusion list.
228 |     ],
229 |   },
230 |   plugins: [
231 |     // Makes some environment variables available in index.html.
232 |     // The public URL is available as %PUBLIC_URL% in index.html, e.g.:
233 |     // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
234 |     // In production, it will be an empty string unless you specify "homepage"
235 |     // in `package.json`, in which case it will be the pathname of that URL.
236 |     new InterpolateHtmlPlugin(env.raw),
237 |     // Generates an `index.html` file with the <script> injected.
238 |     new HtmlWebpackPlugin({
239 |       inject: true,
240 |       template: paths.appHtml,
241 |       minify: {
242 |         removeComments: true,
243 |         collapseWhitespace: true,
244 |         removeRedundantAttributes: true,
245 |         useShortDoctype: true,
246 |         removeEmptyAttributes: true,
247 |         removeStyleLinkTypeAttributes: true,
248 |         keepClosingSlash: true,
249 |         minifyJS: true,
250 |         minifyCSS: true,
251 |         minifyURLs: true,
252 |       },
253 |     }),
254 |     // Makes some environment variables available to the JS code, for example:
255 |     // if (process.env.NODE_ENV === 'production') { ... }. See `./env.js`.
256 |     // It is absolutely essential that NODE_ENV was set to production here.
257 |     // Otherwise React will be compiled in the very slow development mode.
258 |     new webpack.DefinePlugin(env.stringified),
259 |     // Minify the code.
260 |     new webpack.optimize.UglifyJsPlugin({
261 |       compress: {
262 |         warnings: false,
263 |         // Disabled because of an issue with Uglify breaking seemingly valid code:
264 |         // https://github.com/facebookincubator/create-react-app/issues/2376
265 |         // Pending further investigation:
266 |         // https://github.com/mishoo/UglifyJS2/issues/2011
267 |         comparisons: false,
268 |       },
269 |       output: {
270 |         comments: false,
271 |         // Turned on because emoji and regex is not minified properly using default
272 |         // https://github.com/facebookincubator/create-react-app/issues/2488
273 |         ascii_only: true,
274 |       },
275 |       sourceMap: true,
276 |     }),
277 |     // Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
278 |     new ExtractTextPlugin({
279 |       filename: cssFilename,
280 |     }),
281 |     // Generate a manifest file which contains a mapping of all asset filenames
282 |     // to their corresponding output file so that tools can pick it up without
283 |     // having to parse `index.html`.
284 |     new ManifestPlugin({
285 |       fileName: 'asset-manifest.json',
286 |     }),
287 |     // Generate a service worker script that will precache, and keep up to date,
288 |     // the HTML & assets that are part of the Webpack build.
289 |     new SWPrecacheWebpackPlugin({
290 |       // By default, a cache-busting query parameter is appended to requests
291 |       // used to populate the caches, to ensure the responses are fresh.
292 |       // If a URL is already hashed by Webpack, then there is no concern
293 |       // about it being stale, and the cache-busting can be skipped.
294 |       dontCacheBustUrlsMatching: /\.\w{8}\./,
295 |       filename: 'service-worker.js',
296 |       logger(message) {
297 |         if (message.indexOf('Total precache size is') === 0) {
298 |           // This message occurs for every build and is a bit too noisy.
299 |           return;
300 |         }
301 |         if (message.indexOf('Skipping static resource') === 0) {
302 |           // This message obscures real errors so we ignore it.
303 |           // https://github.com/facebookincubator/create-react-app/issues/2612
304 |           return;
305 |         }
306 |         console.log(message);
307 |       },
308 |       minify: true,
309 |       // For unknown URLs, fallback to the index page
310 |       navigateFallback: publicUrl + '/index.html',
311 |       // Ignores URLs starting from /__ (useful for Firebase):
312 |       // https://github.com/facebookincubator/create-react-app/issues/2237#issuecomment-302693219
313 |       navigateFallbackWhitelist: [/^(?!\/__).*/],
314 |       // Don't precache sourcemaps (they're large) and build asset manifest:
315 |       staticFileGlobsIgnorePatterns: [/\.map$/, /asset-manifest\.json$/],
316 |     }),
317 |     // Moment.js is an extremely popular library that bundles large locale files
318 |     // by default due to how Webpack interprets its code. This is a practical
319 |     // solution that requires the user to opt into importing specific locales.
320 |     // https://github.com/jmblog/how-to-optimize-momentjs-with-webpack
321 |     // You can remove this if you don't use Moment.js:
322 |     new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
323 |   ],
324 |   // Some libraries import Node modules but don't use them in the browser.
325 |   // Tell Webpack to provide empty mocks for them so importing them works.
326 |   node: {
327 |     dgram: 'empty',
328 |     fs: 'empty',
329 |     net: 'empty',
330 |     tls: 'empty',
331 |   },
332 | };
333 | 


--------------------------------------------------------------------------------
/config/webpackDevServer.config.js:
--------------------------------------------------------------------------------
 1 | 'use strict';
 2 | 
 3 | const errorOverlayMiddleware = require('react-error-overlay/middleware');
 4 | const noopServiceWorkerMiddleware = require('react-dev-utils/noopServiceWorkerMiddleware');
 5 | const config = require('./webpack.config.dev');
 6 | const paths = require('./paths');
 7 | 
 8 | const protocol = process.env.HTTPS === 'true' ? 'https' : 'http';
 9 | const host = process.env.HOST || '0.0.0.0';
10 | 
11 | module.exports = function(proxy, allowedHost) {
12 |   return {
13 |     // WebpackDevServer 2.4.3 introduced a security fix that prevents remote
14 |     // websites from potentially accessing local content through DNS rebinding:
15 |     // https://github.com/webpack/webpack-dev-server/issues/887
16 |     // https://medium.com/webpack/webpack-dev-server-middleware-security-issues-1489d950874a
17 |     // However, it made several existing use cases such as development in cloud
18 |     // environment or subdomains in development significantly more complicated:
19 |     // https://github.com/facebookincubator/create-react-app/issues/2271
20 |     // https://github.com/facebookincubator/create-react-app/issues/2233
21 |     // While we're investigating better solutions, for now we will take a
22 |     // compromise. Since our WDS configuration only serves files in the `public`
23 |     // folder we won't consider accessing them a vulnerability. However, if you
24 |     // use the `proxy` feature, it gets more dangerous because it can expose
25 |     // remote code execution vulnerabilities in backends like Django and Rails.
26 |     // So we will disable the host check normally, but enable it if you have
27 |     // specified the `proxy` setting. Finally, we let you override it if you
28 |     // really know what you're doing with a special environment variable.
29 |     disableHostCheck:
30 |       !proxy || process.env.DANGEROUSLY_DISABLE_HOST_CHECK === 'true',
31 |     // Enable gzip compression of generated files.
32 |     compress: true,
33 |     // Silence WebpackDevServer's own logs since they're generally not useful.
34 |     // It will still show compile warnings and errors with this setting.
35 |     clientLogLevel: 'none',
36 |     // By default WebpackDevServer serves physical files from current directory
37 |     // in addition to all the virtual build products that it serves from memory.
38 |     // This is confusing because those files won’t automatically be available in
39 |     // production build folder unless we copy them. However, copying the whole
40 |     // project directory is dangerous because we may expose sensitive files.
41 |     // Instead, we establish a convention that only files in `public` directory
42 |     // get served. Our build script will copy `public` into the `build` folder.
43 |     // In `index.html`, you can get URL of `public` folder with %PUBLIC_URL%:
44 |     // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
45 |     // In JavaScript code, you can access it with `process.env.PUBLIC_URL`.
46 |     // Note that we only recommend to use `public` folder as an escape hatch
47 |     // for files like `favicon.ico`, `manifest.json`, and libraries that are
48 |     // for some reason broken when imported through Webpack. If you just want to
49 |     // use an image, put it in `src` and `import` it from JavaScript instead.
50 |     contentBase: paths.appPublic,
51 |     // By default files from `contentBase` will not trigger a page reload.
52 |     watchContentBase: true,
53 |     // Enable hot reloading server. It will provide /sockjs-node/ endpoint
54 |     // for the WebpackDevServer client so it can learn when the files were
55 |     // updated. The WebpackDevServer client is included as an entry point
56 |     // in the Webpack development configuration. Note that only changes
57 |     // to CSS are currently hot reloaded. JS changes will refresh the browser.
58 |     hot: true,
59 |     // It is important to tell WebpackDevServer to use the same "root" path
60 |     // as we specified in the config. In development, we always serve from /.
61 |     publicPath: config.output.publicPath,
62 |     // WebpackDevServer is noisy by default so we emit custom message instead
63 |     // by listening to the compiler events with `compiler.plugin` calls above.
64 |     quiet: true,
65 |     // Reportedly, this avoids CPU overload on some systems.
66 |     // https://github.com/facebookincubator/create-react-app/issues/293
67 |     watchOptions: {
68 |       ignored: /node_modules/,
69 |     },
70 |     // Enable HTTPS if the HTTPS environment variable is set to 'true'
71 |     https: protocol === 'https',
72 |     host: host,
73 |     overlay: false,
74 |     historyApiFallback: {
75 |       // Paths with dots should still use the history fallback.
76 |       // See https://github.com/facebookincubator/create-react-app/issues/387.
77 |       disableDotRule: true,
78 |     },
79 |     public: allowedHost,
80 |     proxy,
81 |     setup(app) {
82 |       // This lets us open files from the runtime error overlay.
83 |       app.use(errorOverlayMiddleware());
84 |       // This service worker file is effectively a 'no-op' that will reset any
85 |       // previous service worker registered for the same host:port combination.
86 |       // We do this in development to avoid hitting the production cache if
87 |       // it used the same host and port.
88 |       // https://github.com/facebookincubator/create-react-app/issues/2272#issuecomment-302832432
89 |       app.use(noopServiceWorkerMiddleware());
90 |     },
91 |   };
92 | };
93 | 


--------------------------------------------------------------------------------
/diagram.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/rikukissa/redux-isolated-apps/e14b6ebc219ef5bf7b08e5447f2d2b1b458c0e44/diagram.png


--------------------------------------------------------------------------------
/diagram.xml:
--------------------------------------------------------------------------------
1 | <mxfile userAgent="Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36" version="7.6.7" editor="www.draw.io" type="device"><diagram id="f710eb67-c3d2-fb3e-6aaa-aa92371f30a6" name="Page-1">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</diagram></mxfile>


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "cra-webpack2",
 3 |   "version": "0.1.0",
 4 |   "private": true,
 5 |   "dependencies": {
 6 |     "autoprefixer": "7.1.1",
 7 |     "babel-core": "6.25.0",
 8 |     "babel-eslint": "7.2.3",
 9 |     "babel-jest": "20.0.3",
10 |     "babel-loader": "7.0.0",
11 |     "babel-preset-react-app": "^3.0.1",
12 |     "babel-runtime": "6.23.0",
13 |     "case-sensitive-paths-webpack-plugin": "2.1.1",
14 |     "chalk": "1.1.3",
15 |     "css-loader": "0.28.4",
16 |     "date-fns": "^1.28.5",
17 |     "dotenv": "4.0.0",
18 |     "enzyme": "^2.9.1",
19 |     "eslint": "3.19.0",
20 |     "eslint-config-react-app": "^1.0.5",
21 |     "eslint-loader": "1.7.1",
22 |     "eslint-plugin-flowtype": "2.34.0",
23 |     "eslint-plugin-import": "2.2.0",
24 |     "eslint-plugin-jsx-a11y": "5.0.3",
25 |     "eslint-plugin-react": "7.1.0",
26 |     "extract-text-webpack-plugin": "2.1.2",
27 |     "file-loader": "0.11.2",
28 |     "fs-extra": "3.0.1",
29 |     "html-webpack-plugin": "2.29.0",
30 |     "jest": "20.0.4",
31 |     "object-assign": "4.1.1",
32 |     "postcss-flexbugs-fixes": "3.0.0",
33 |     "postcss-loader": "2.0.6",
34 |     "promise": "7.1.1",
35 |     "react": "^15.6.1",
36 |     "react-dev-utils": "^3.0.2",
37 |     "react-dom": "^15.6.1",
38 |     "react-error-overlay": "^1.0.9",
39 |     "react-redux": "^5.0.6",
40 |     "react-test-renderer": "^15.6.1",
41 |     "redux": "^3.7.2",
42 |     "style-loader": "0.18.2",
43 |     "sw-precache-webpack-plugin": "0.11.3",
44 |     "url-loader": "0.5.9",
45 |     "webpack": "2.6.1",
46 |     "webpack-dev-server": "2.5.0",
47 |     "webpack-manifest-plugin": "1.1.0",
48 |     "whatwg-fetch": "2.0.3"
49 |   },
50 |   "devDependencies": {
51 |     "prettier": "^1.5.3"
52 |   },
53 |   "scripts": {
54 |     "start": "node scripts/start.js",
55 |     "build": "node scripts/build.js",
56 |     "test": "node scripts/test.js --env=jsdom"
57 |   },
58 |   "jest": {
59 |     "collectCoverageFrom": [
60 |       "src/**/*.{js,jsx}"
61 |     ],
62 |     "setupFiles": [
63 |       "<rootDir>/config/polyfills.js"
64 |     ],
65 |     "testMatch": [
66 |       "<rootDir>/src/**/__tests__/**/*.js?(x)",
67 |       "<rootDir>/src/**/?(*.)(spec|test).js?(x)"
68 |     ],
69 |     "testEnvironment": "node",
70 |     "testURL": "http://localhost",
71 |     "transform": {
72 |       "^.+\\.(js|jsx)$": "<rootDir>/node_modules/babel-jest",
73 |       "^.+\\.css$": "<rootDir>/config/jest/cssTransform.js",
74 |       "^(?!.*\\.(js|jsx|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
75 |     },
76 |     "transformIgnorePatterns": [
77 |       "[/\\\\]node_modules[/\\\\].+\\.(js|jsx)$"
78 |     ],
79 |     "moduleNameMapper": {
80 |       "^react-native$": "react-native-web"
81 |     },
82 |     "moduleFileExtensions": [
83 |       "web.js",
84 |       "js",
85 |       "json",
86 |       "web.jsx",
87 |       "jsx"
88 |     ]
89 |   },
90 |   "babel": {
91 |     "presets": [
92 |       "react-app"
93 |     ]
94 |   },
95 |   "eslintConfig": {
96 |     "extends": "react-app"
97 |   }
98 | }
99 | 


--------------------------------------------------------------------------------
/public/favicon.ico:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/rikukissa/redux-isolated-apps/e14b6ebc219ef5bf7b08e5447f2d2b1b458c0e44/public/favicon.ico


--------------------------------------------------------------------------------
/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 | 


--------------------------------------------------------------------------------
/public/manifest.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "short_name": "React App",
 3 |   "name": "Create React App Sample",
 4 |   "icons": [
 5 |     {
 6 |       "src": "favicon.ico",
 7 |       "sizes": "192x192",
 8 |       "type": "image/png"
 9 |     }
10 |   ],
11 |   "start_url": "./index.html",
12 |   "display": "standalone",
13 |   "theme_color": "#000000",
14 |   "background_color": "#ffffff"
15 | }
16 | 


--------------------------------------------------------------------------------
/scripts/build.js:
--------------------------------------------------------------------------------
  1 | 'use strict';
  2 | 
  3 | // Do this as the first thing so that any code reading it knows the right env.
  4 | process.env.BABEL_ENV = 'production';
  5 | process.env.NODE_ENV = 'production';
  6 | 
  7 | // Makes the script crash on unhandled rejections instead of silently
  8 | // ignoring them. In the future, promise rejections that are not handled will
  9 | // terminate the Node.js process with a non-zero exit code.
 10 | process.on('unhandledRejection', err => {
 11 |   throw err;
 12 | });
 13 | 
 14 | // Ensure environment variables are read.
 15 | require('../config/env');
 16 | 
 17 | const path = require('path');
 18 | const chalk = require('chalk');
 19 | const fs = require('fs-extra');
 20 | const webpack = require('webpack');
 21 | const config = require('../config/webpack.config.prod');
 22 | const paths = require('../config/paths');
 23 | const checkRequiredFiles = require('react-dev-utils/checkRequiredFiles');
 24 | const formatWebpackMessages = require('react-dev-utils/formatWebpackMessages');
 25 | const printHostingInstructions = require('react-dev-utils/printHostingInstructions');
 26 | const FileSizeReporter = require('react-dev-utils/FileSizeReporter');
 27 | 
 28 | const measureFileSizesBeforeBuild =
 29 |   FileSizeReporter.measureFileSizesBeforeBuild;
 30 | const printFileSizesAfterBuild = FileSizeReporter.printFileSizesAfterBuild;
 31 | const useYarn = fs.existsSync(paths.yarnLockFile);
 32 | 
 33 | // These sizes are pretty large. We'll warn for bundles exceeding them.
 34 | const WARN_AFTER_BUNDLE_GZIP_SIZE = 512 * 1024;
 35 | const WARN_AFTER_CHUNK_GZIP_SIZE = 1024 * 1024;
 36 | 
 37 | // Warn and crash if required files are missing
 38 | if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
 39 |   process.exit(1);
 40 | }
 41 | 
 42 | // First, read the current file sizes in build directory.
 43 | // This lets us display how much they changed later.
 44 | measureFileSizesBeforeBuild(paths.appBuild)
 45 |   .then(previousFileSizes => {
 46 |     // Remove all content but keep the directory so that
 47 |     // if you're in it, you don't end up in Trash
 48 |     fs.emptyDirSync(paths.appBuild);
 49 |     // Merge with the public folder
 50 |     copyPublicFolder();
 51 |     // Start the webpack build
 52 |     return build(previousFileSizes);
 53 |   })
 54 |   .then(
 55 |     ({ stats, previousFileSizes, warnings }) => {
 56 |       if (warnings.length) {
 57 |         console.log(chalk.yellow('Compiled with warnings.\n'));
 58 |         console.log(warnings.join('\n\n'));
 59 |         console.log(
 60 |           '\nSearch for the ' +
 61 |             chalk.underline(chalk.yellow('keywords')) +
 62 |             ' to learn more about each warning.'
 63 |         );
 64 |         console.log(
 65 |           'To ignore, add ' +
 66 |             chalk.cyan('// eslint-disable-next-line') +
 67 |             ' to the line before.\n'
 68 |         );
 69 |       } else {
 70 |         console.log(chalk.green('Compiled successfully.\n'));
 71 |       }
 72 | 
 73 |       console.log('File sizes after gzip:\n');
 74 |       printFileSizesAfterBuild(
 75 |         stats,
 76 |         previousFileSizes,
 77 |         paths.appBuild,
 78 |         WARN_AFTER_BUNDLE_GZIP_SIZE,
 79 |         WARN_AFTER_CHUNK_GZIP_SIZE
 80 |       );
 81 |       console.log();
 82 | 
 83 |       const appPackage = require(paths.appPackageJson);
 84 |       const publicUrl = paths.publicUrl;
 85 |       const publicPath = config.output.publicPath;
 86 |       const buildFolder = path.relative(process.cwd(), paths.appBuild);
 87 |       printHostingInstructions(
 88 |         appPackage,
 89 |         publicUrl,
 90 |         publicPath,
 91 |         buildFolder,
 92 |         useYarn
 93 |       );
 94 |     },
 95 |     err => {
 96 |       console.log(chalk.red('Failed to compile.\n'));
 97 |       console.log((err.message || err) + '\n');
 98 |       process.exit(1);
 99 |     }
100 |   );
101 | 
102 | // Create the production build and print the deployment instructions.
103 | function build(previousFileSizes) {
104 |   console.log('Creating an optimized production build...');
105 | 
106 |   let compiler = webpack(config);
107 |   return new Promise((resolve, reject) => {
108 |     compiler.run((err, stats) => {
109 |       if (err) {
110 |         return reject(err);
111 |       }
112 |       const messages = formatWebpackMessages(stats.toJson({}, true));
113 |       if (messages.errors.length) {
114 |         return reject(new Error(messages.errors.join('\n\n')));
115 |       }
116 |       if (
117 |         process.env.CI &&
118 |         (typeof process.env.CI !== 'string' ||
119 |           process.env.CI.toLowerCase() !== 'false') &&
120 |         messages.warnings.length
121 |       ) {
122 |         console.log(
123 |           chalk.yellow(
124 |             '\nTreating warnings as errors because process.env.CI = true.\n' +
125 |               'Most CI servers set it automatically.\n'
126 |           )
127 |         );
128 |         return reject(new Error(messages.warnings.join('\n\n')));
129 |       }
130 |       return resolve({
131 |         stats,
132 |         previousFileSizes,
133 |         warnings: messages.warnings,
134 |       });
135 |     });
136 |   });
137 | }
138 | 
139 | function copyPublicFolder() {
140 |   fs.copySync(paths.appPublic, paths.appBuild, {
141 |     dereference: true,
142 |     filter: file => file !== paths.appHtml,
143 |   });
144 | }
145 | 


--------------------------------------------------------------------------------
/scripts/start.js:
--------------------------------------------------------------------------------
 1 | 'use strict';
 2 | 
 3 | // Do this as the first thing so that any code reading it knows the right env.
 4 | process.env.BABEL_ENV = 'development';
 5 | process.env.NODE_ENV = 'development';
 6 | 
 7 | // Makes the script crash on unhandled rejections instead of silently
 8 | // ignoring them. In the future, promise rejections that are not handled will
 9 | // terminate the Node.js process with a non-zero exit code.
10 | process.on('unhandledRejection', err => {
11 |   throw err;
12 | });
13 | 
14 | // Ensure environment variables are read.
15 | require('../config/env');
16 | 
17 | const fs = require('fs');
18 | const chalk = require('chalk');
19 | const webpack = require('webpack');
20 | const WebpackDevServer = require('webpack-dev-server');
21 | const clearConsole = require('react-dev-utils/clearConsole');
22 | const checkRequiredFiles = require('react-dev-utils/checkRequiredFiles');
23 | const {
24 |   choosePort,
25 |   createCompiler,
26 |   prepareProxy,
27 |   prepareUrls,
28 | } = require('react-dev-utils/WebpackDevServerUtils');
29 | const openBrowser = require('react-dev-utils/openBrowser');
30 | const paths = require('../config/paths');
31 | const config = require('../config/webpack.config.dev');
32 | const createDevServerConfig = require('../config/webpackDevServer.config');
33 | 
34 | const useYarn = fs.existsSync(paths.yarnLockFile);
35 | const isInteractive = process.stdout.isTTY;
36 | 
37 | // Warn and crash if required files are missing
38 | if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
39 |   process.exit(1);
40 | }
41 | 
42 | // Tools like Cloud9 rely on this.
43 | const DEFAULT_PORT = parseInt(process.env.PORT, 10) || 3000;
44 | const HOST = process.env.HOST || '0.0.0.0';
45 | 
46 | // We attempt to use the default port but if it is busy, we offer the user to
47 | // run on a different port. `detect()` Promise resolves to the next free port.
48 | choosePort(HOST, DEFAULT_PORT)
49 |   .then(port => {
50 |     if (port == null) {
51 |       // We have not found a port.
52 |       return;
53 |     }
54 |     const protocol = process.env.HTTPS === 'true' ? 'https' : 'http';
55 |     const appName = require(paths.appPackageJson).name;
56 |     const urls = prepareUrls(protocol, HOST, port);
57 |     // Create a webpack compiler that is configured with custom messages.
58 |     const compiler = createCompiler(webpack, config, appName, urls, useYarn);
59 |     // Load proxy config
60 |     const proxySetting = require(paths.appPackageJson).proxy;
61 |     const proxyConfig = prepareProxy(proxySetting, paths.appPublic);
62 |     // Serve webpack assets generated by the compiler over a web sever.
63 |     const serverConfig = createDevServerConfig(
64 |       proxyConfig,
65 |       urls.lanUrlForConfig
66 |     );
67 |     const devServer = new WebpackDevServer(compiler, serverConfig);
68 |     // Launch WebpackDevServer.
69 |     devServer.listen(port, HOST, err => {
70 |       if (err) {
71 |         return console.log(err);
72 |       }
73 |       if (isInteractive) {
74 |         clearConsole();
75 |       }
76 |       console.log(chalk.cyan('Starting the development server...\n'));
77 |       openBrowser(urls.localUrlForBrowser);
78 |     });
79 | 
80 |     ['SIGINT', 'SIGTERM'].forEach(function(sig) {
81 |       process.on(sig, function() {
82 |         devServer.close();
83 |         process.exit();
84 |       });
85 |     });
86 |   })
87 |   .catch(err => {
88 |     if (err && err.message) {
89 |       console.log(err.message);
90 |     }
91 |     process.exit(1);
92 |   });
93 | 


--------------------------------------------------------------------------------
/scripts/test.js:
--------------------------------------------------------------------------------
 1 | 'use strict';
 2 | 
 3 | // Do this as the first thing so that any code reading it knows the right env.
 4 | process.env.BABEL_ENV = 'test';
 5 | process.env.NODE_ENV = 'test';
 6 | process.env.PUBLIC_URL = '';
 7 | 
 8 | // Makes the script crash on unhandled rejections instead of silently
 9 | // ignoring them. In the future, promise rejections that are not handled will
10 | // terminate the Node.js process with a non-zero exit code.
11 | process.on('unhandledRejection', err => {
12 |   throw err;
13 | });
14 | 
15 | // Ensure environment variables are read.
16 | require('../config/env');
17 | 
18 | const jest = require('jest');
19 | const argv = process.argv.slice(2);
20 | 
21 | // Watch unless on CI or in coverage mode
22 | if (!process.env.CI && argv.indexOf('--coverage') < 0) {
23 |   argv.push('--watch');
24 | }
25 | 
26 | 
27 | jest.run(argv);
28 | 


--------------------------------------------------------------------------------
/src/App.css:
--------------------------------------------------------------------------------
1 | .block {
2 |   position: absolute;
3 |   width: 24px;
4 |   height: 24px;
5 |   background: red;
6 |   border: 1px solid #000;
7 | }


--------------------------------------------------------------------------------
/src/App.js:
--------------------------------------------------------------------------------
 1 | import React, { Component } from "react";
 2 | import UserCreator from "./UserCreator";
 3 | import { connect } from "react-redux";
 4 | 
 5 | class App extends Component {
 6 |   render() {
 7 |     const { users } = this.props;
 8 |     return (
 9 |       <div>
10 |         <UserCreator />
11 |         <UserCreator />
12 |         <UserCreator />
13 |         <div id="userList">
14 |           {users.map(({ name }) =>
15 |             <div key={name} className="user">
16 |               {name}
17 |             </div>
18 |           )}
19 |         </div>
20 |       </div>
21 |     );
22 |   }
23 | }
24 | 
25 | function mapStateToProps(state) {
26 |   return {
27 |     users: state.users
28 |   };
29 | }
30 | 
31 | export default connect(mapStateToProps)(App);
32 | 


--------------------------------------------------------------------------------
/src/App.test.js:
--------------------------------------------------------------------------------
 1 | import React from "react";
 2 | import App from "./App";
 3 | import UserCreator from "./UserCreator";
 4 | import createStore from "./store";
 5 | import { Provider } from "react-redux";
 6 | import { mount } from "enzyme";
 7 | 
 8 | function createApp() {
 9 |   return mount(
10 |     <Provider store={createStore()}>
11 |       <App />
12 |     </Provider>
13 |   );
14 | }
15 | 
16 | function getUserList(app) {
17 |   return app.find("#userList");
18 | }
19 | 
20 | function inputNameValue(userCreator, value) {
21 |   userCreator.find("input").simulate("change", { target: { value } });
22 | }
23 | 
24 | function createUser(userCreator) {
25 |   inputNameValue(userCreator, "Jorma");
26 |   userCreator.find("form").simulate("submit");
27 | }
28 | 
29 | describe("App", () => {
30 |   it("has 3 user creator components", () => {
31 |     const app = createApp();
32 |     expect(app.find(UserCreator)).toHaveLength(3);
33 |   });
34 |   it("has one list of users", () => {
35 |     const app = createApp();
36 |     expect(getUserList(app)).toHaveLength(1);
37 |   });
38 | });
39 | 
40 | describe("User creator", () => {
41 |   it("adds new user to user store when submitted", () => {
42 |     const app = createApp();
43 |     createUser(app.find(UserCreator).first());
44 |     expect(getUserList(app).find(".user").length).toBe(1);
45 |   });
46 |   it("doesn't change other UserCreators' name field value", () => {
47 |     const app = createApp();
48 |     inputNameValue(app.find(UserCreator).first(), "Jorma");
49 |     expect(app.find(UserCreator).last().find("input").props().value).toBe("");
50 |   });
51 | });
52 | 


--------------------------------------------------------------------------------
/src/UserCreator/actions.js:
--------------------------------------------------------------------------------
 1 | export const UPDATE_NAME_FIELD = "USER_CREATOR/UPDATE_NAME_FIELD";
 2 | export function updateNameField(name) {
 3 |   return {
 4 |     type: UPDATE_NAME_FIELD,
 5 |     payload: name
 6 |   };
 7 | }
 8 | 
 9 | export const CREATE_USER = "USER_CREATOR/CREATE_USER";
10 | export function createUser() {
11 |   return {
12 |     type: CREATE_USER
13 |   };
14 | }
15 | 


--------------------------------------------------------------------------------
/src/UserCreator/index.js:
--------------------------------------------------------------------------------
 1 | import React, { Component } from "react";
 2 | import { updateNameField, createUser } from "./actions";
 3 | import { connect } from "react-redux";
 4 | 
 5 | class UserCreator extends Component {
 6 |   updateNameField = event => {
 7 |     this.props.updateNameField(event.target.value);
 8 |   };
 9 |   createUser = event => {
10 |     event.preventDefault();
11 |     this.props.createUser();
12 |   };
13 |   render() {
14 |     const { name } = this.props;
15 |     return (
16 |       <form onSubmit={this.createUser}>
17 |         <h3>User creator</h3>
18 |         <input type="text" value={name} placeholder="name" onChange={this.updateNameField} />
19 |         <button>Save</button>
20 |       </form>
21 |     );
22 |   }
23 | }
24 | 
25 | const mapStateToProps = state => ({ name: state.name });
26 | const mapDispatchToProps = {
27 |   updateNameField: updateNameField,
28 |   createUser: createUser
29 | };
30 | 
31 | export default connect(mapStateToProps, mapDispatchToProps)(UserCreator);
32 | 


--------------------------------------------------------------------------------
/src/UserCreator/reducer.js:
--------------------------------------------------------------------------------
 1 | import { UPDATE_NAME_FIELD } from "./actions";
 2 | 
 3 | const initialState = {
 4 |   name: ""
 5 | };
 6 | 
 7 | export default function(state = initialState, action) {
 8 |   switch (action.type) {
 9 |     case UPDATE_NAME_FIELD:
10 |       return { ...state, name: action.payload };
11 |     default:
12 |       return state;
13 |   }
14 | }
15 | 


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


--------------------------------------------------------------------------------
/src/index.js:
--------------------------------------------------------------------------------
 1 | import React from "react";
 2 | import ReactDOM from "react-dom";
 3 | import { Provider } from "react-redux";
 4 | import createStore from "./store";
 5 | 
 6 | import "./index.css";
 7 | import App from "./App";
 8 | 
 9 | ReactDOM.render(
10 |   <Provider store={createStore()}>
11 |     <App />
12 |   </Provider>,
13 |   document.getElementById("root")
14 | );
15 | 


--------------------------------------------------------------------------------
/src/state/app.js:
--------------------------------------------------------------------------------
1 | export default function(state = [], action) {
2 |   switch (action.type) {
3 |     default:
4 |       return state;
5 |   }
6 | }
7 | 


--------------------------------------------------------------------------------
/src/state/users.js:
--------------------------------------------------------------------------------
 1 | export const USER_CREATED = "USERS/USER_CREATED";
 2 | 
 3 | export function userCreated(user) {
 4 |   return {
 5 |     type: USER_CREATED,
 6 |     payload: user
 7 |   };
 8 | }
 9 | 
10 | export default function(state = [], action) {
11 |   switch (action.type) {
12 |     case USER_CREATED:
13 |       return state.concat(action.payload);
14 |     default:
15 |       return state;
16 |   }
17 | }
18 | 


--------------------------------------------------------------------------------
/src/store.js:
--------------------------------------------------------------------------------
 1 | import { combineReducers, createStore } from "redux";
 2 | 
 3 | import appReducer from "./state/app";
 4 | import usersReducer from "./state/users";
 5 | 
 6 | export default () =>
 7 |   createStore(
 8 |     combineReducers({
 9 |       app: appReducer,
10 |       users: usersReducer
11 |     }),
12 |     window.__REDUX_DEVTOOLS_EXTENSION__ && window.__REDUX_DEVTOOLS_EXTENSION__()
13 |   );
14 | 


--------------------------------------------------------------------------------