├── .eslintignore
├── .gitignore
├── README.md
├── config
    ├── .eslintrc
    ├── env.js
    ├── jest
    │   ├── cssTransform.js
    │   └── fileTransform.js
    ├── paths.js
    ├── polyfills.js
    ├── webpack.config.dev.js
    └── webpack.config.prod.js
├── contracts
    ├── ConvertLib.sol
    ├── MetaCoin.sol
    ├── Migrations.sol
    └── SimpleWallet.sol
├── docs
    └── img
    │   ├── dapp-dev-env.png
    │   └── react-redux-dapp.png
├── license.MD
├── migrations
    ├── 1_initial_migration.js
    └── 2_deploy_contracts.js
├── package.json
├── public
    ├── css
    │   ├── bootstrap-theme.min.css
    │   ├── bootstrap.min.css
    │   └── styles.css
    ├── favicon.ico
    ├── index.html
    └── js
    │   ├── bootstrap.min.js
    │   └── jquery.min.js
├── scripts
    ├── build.js
    ├── start.js
    └── test.js
├── src
    ├── actions
    │   └── index.js
    ├── components
    │   ├── Account.js
    │   ├── AccountItem.js
    │   ├── AccountTable.js
    │   ├── AccountsList.js
    │   ├── AddressDropdown.js
    │   ├── AmountInput.js
    │   ├── CryptoDropdown.js
    │   ├── HomePage.js
    │   ├── TransactionTable.js
    │   ├── nav
    │   │   ├── NavBar.js
    │   │   └── NavItem.js
    │   ├── services
    │   │   └── HttpService.js
    │   └── uport
    │   │   └── UPortView.jsx
    ├── containers
    │   ├── App.js
    │   └── YAEEContainer.js
    ├── index.js
    ├── middleware
    │   ├── crypto.js
    │   ├── cryptos.json
    │   ├── ethereum.js
    │   └── metacoin.js
    └── reducers
    │   ├── accounts.js
    │   ├── cryptos.js
    │   ├── index.js
    │   ├── transactions.js
    │   └── transfer.js
├── test
    ├── SimpleWalletTest.js
    ├── TestMetacoin.sol
    └── metacoin.js
└── truffle.js


/.eslintignore:
--------------------------------------------------------------------------------
1 | migrations/**
2 | test/SimpleWalletTest.js
3 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | # See http://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
15 | npm-debug.log
16 | 
17 | # truffle compiles
18 | .truffle-solidity-loader
19 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
   1 | # react-redux-dapp
   2 | This is a template project that can be used as the basis for an Ethereum Dapp.
   3 | 
   4 | <img src=docs/img/react-redux-dapp.png width="300">
   5 | 
   6 | # Prerequisites
   7 | You'll want to have the following installed globally
   8 | 
   9 | - [nodejs](https://nodejs.org/en/)
  10 | - [testrpc](https://github.com/ethereumjs/testrpc)
  11 | - [truffle v3.1.1+](http://truffleframework.com/)
  12 | 
  13 | # This is how to use it
  14 | In the project directory, run these commands:
  15 | ```
  16 |  npm install
  17 |  npm start
  18 | ```
  19 | 
  20 | # Environment
  21 | This is an overview of the development environment I use.
  22 | 
  23 | <img src=docs/img/dapp-dev-env.png width="300">
  24 | 
  25 | 
  26 | # General Redux Data Flows in react-redux-dapp
  27 | For reference, consider these depictions of generic redux flows taken from [ReachJS Issue #653](https://github.com/reactjs/redux/issues/653].
  28 | 
  29 | <img src=https://camo.githubusercontent.com/5aba89b6daab934631adffc1f301d17bb273268b/68747470733a2f2f73332e616d617a6f6e6177732e636f6d2f6d656469612d702e736c69642e65732f75706c6f6164732f3336343831322f696d616765732f323438343535322f415243482d5265647578322d7265616c2e676966 width="300">
  30 | 
  31 | <img src=https://camo.githubusercontent.com/9de527b9432cc9244dc600875b46b43311918b59/68747470733a2f2f73332e616d617a6f6e6177732e636f6d2f6d656469612d702e736c69642e65732f75706c6f6164732f3336343831322f696d616765732f323438343739302f415243482d5265647578322d657874656e6465642d7265616c2d6465636c657261746976652e676966 width="300">
  32 | 
  33 | # Redux Data Flows in react-redux-dapp
  34 | This section describes the reducers, state model and actions used in the YAEE sample application included in this project.
  35 | 
  36 | ## Reducers
  37 | The reducers maintain state
  38 | 
  39 | ## Middleware
  40 | 
  41 | ### Thunk
  42 | The [redux-thunk](https://github.com/gaearon/redux-thunk) middleware component is used to incercept the asynchronous server calls from `web3.filter()` events.
  43 | 
  44 | ###
  45 | The [redux-logger](https://www.npmjs.com/package/redux-logger) middleware component provides clean logging of state before, actions and state after for debugging. 
  46 | 
  47 | 
  48 | ## State Model
  49 | The state model represents on-chain data including `accounts` and transactions `transactions` and off-chain data like the list of `cryptos` or tokens that can be transfered and `transfer` details captured from the view.
  50 | 
  51 | ## Actions
  52 | The application state is initialized by calling actions `getAllAccounts`, `getCryptos` and `fetchTransactions`.  For now, `fetchTransactions` initalizes the `web3.filter()` to listen for the latest transacations.
  53 | 
  54 | 
  55 | 
  56 | # ---- STOP - Outdated Notes below  -----
  57 | # - project has been update to ES6 since these notes started
  58 | The notes below this point capture some of the journey to get here and need to be updated.
  59 | 
  60 | # This is how it was built
  61 | So now we've seen how easy it is to create a react application and we've seen how easy it is to create a Dapp with Truffle.
  62 | 
  63 | So how do we combine these into a cohesive development environment?
  64 | 
  65 | ```Linux
  66 | create-react-app react-truffle
  67 | cd react-truffle
  68 | npm run eject # to 'unhide' the transitive dependencies
  69 | ```
  70 | 
  71 | Now let's start configuring our react application with truffle integration.
  72 | 
  73 | Following along with this Truffle tutorial [Bundling with Webpack](http://truffleframework.com/tutorials/bundling-with-webpack), we'll
  74 | install some dependencies.  Since the ejected React app already has webpack and
  75 | webpack-dev-server installed, we just install the truffle-solidity-loader to
  76 | enable Solidity support.
  77 | 
  78 | ```Linux
  79 | npm install truffle-solidity-loader --save-dev
  80 | ```
  81 | 
  82 | ## Configure Webpack
  83 | To configure the development environment so Webpack will use the `truffle-solidity-loader` to recompile and migrate updates to Solidity contracts, edit `config\webpack.config.dev.js` to load `.sol` files from your project.
  84 | 
  85 | ```Javascript
  86 | module: {
  87 |   ...
  88 |   loaders: [
  89 |   ...
  90 |   },
  91 |   {
  92 |     test: /\.sol/, loader: 'truffle-solidity'
  93 |   }
  94 | ]
  95 | },
  96 | ...
  97 | ```
  98 | 
  99 | Next, create a truffle folder so we can isolate the Ethereum portfion of our Dapp.
 100 | 
 101 | Create a truffle.js
 102 | Your truffle.js will not have any build configuration since webpack will handle
 103 | building your web application.  (What happens if you run truffle build?)
 104 | 
 105 | The only configuration in truffle.js is non-web configuration such as rpc.
 106 | 
 107 | ```javascript
 108 | module.exports = {
 109 |   rpc: {
 110 |     host: "localhost",
 111 |     port: 8545
 112 |   }
 113 | }
 114 | 
 115 | `babel-preset-react-app` conflicts with the `es2015` preset so used by Truffle so
 116 | replace that with `babel-preset-react` so both will play nice.
 117 | 
 118 | ```Linux
 119 | npm uninstall --save-dev babel-preset-react-app
 120 | npm install --save-dev babel-preset-react
 121 | ```
 122 | 
 123 | ```
 124 | Edit `package.json` babel preset settings to `es2015`.  Without this,
 125 | running truffle commands will error.
 126 | 
 127 | ```Javascript
 128 | "babel": {
 129 |   "presets": [
 130 |     "react",
 131 |     "es2015"
 132 |   ]
 133 | },
 134 | ```
 135 | 
 136 | * Copy example contracts from truffle-basic project to our truffle folder
 137 | * Copy migrations folder from truffle-basic project to our truffle folder
 138 | * Copy test folder from truffle-basic project to our truffle folder
 139 | 
 140 | We need to test that all our truffle functionality still works.
 141 | 
 142 | # React
 143 | Now let's add some structure to the React portion of this react-dapp project.
 144 | The next few sections will walk through creating a healthy base structure
 145 | to support a reactive Dapp application.
 146 | 
 147 | ## Bootstrap
 148 | Download the latest [Bootstrap libraries](http://getbootstrap.com/) and save
 149 | `bootstrap.min.css` and `bootstrap-theme.min.css` to `public/css` folder.  Save
 150 | the corresponding `boostrap.min.js` to `public/js` folder as well as a version
 151 |  [jquery](https://jquery.com/).  It's unlikely you'll need `jquery` anywhere
 152 | else in your project but some of the `Bootstrap` components use it.
 153 | 
 154 | Now update the `/public/index.html` to link the stylesheets and include the
 155 | stylesheets.
 156 | 
 157 | ```
 158 | <!doctype html>
 159 | <html lang="en">
 160 |   <head>
 161 |     <meta charset="utf-8">
 162 |     <link rel="stylesheet" href="css/bootstrap.min.css">
 163 |     <link rel="stylesheet" href="css/bootstrap-theme.min.css">
 164 |     <link rel="stylesheet" href="css/styles.css">
 165 |     ...
 166 |     <script type="text/javascript" src="js/jquery.min.js"></script>
 167 |     <script type="text/javascript" src="js/bootstrap.min.js"></script>
 168 |   </body>
 169 | </html>
 170 | ```
 171 | 
 172 | ## Remove default React src
 173 | Delete the `App.css`, `App.js`, `App.test.js`, `index.css`, and `logo.svg` from
 174 | the `src` folder.
 175 | 
 176 | ## Leverage react-router
 177 | This project will leverage react-router.
 178 | 
 179 | ```Linux
 180 | npm install --save-dev react-router
 181 | ```
 182 | 
 183 | Update `src/index.js`.
 184 | 
 185 | ```javascript
 186 | import React from 'react';
 187 | import ReactDOM  from 'react-dom';
 188 | import Routes from './routes/Routes.jsx';
 189 | 
 190 | ReactDOM.render(<Routes /> , document.getElementById('root'));
 191 | ```
 192 | 
 193 | ## What I like about react
 194 | Once you have a base project structure in place, React development involves
 195 | creating a collection of reusable components.
 196 | 
 197 | Create the `src/components/Routes.jsx'
 198 | 
 199 | ```JSX
 200 | import React from 'react';
 201 | import { hashHistory, Router, Route, IndexRoute } from 'react-router';
 202 | 
 203 | import BasePage from './BasePage.jsx';
 204 | import HomePage from './HomePage.jsx';
 205 | import SimpleWallet from './wallets/SimpleWallet.jsx';
 206 | 
 207 | var Routes = React.createClass({
 208 |   render: function() {
 209 |     return (
 210 |       <Router history={hashHistory}>
 211 |         <Route path="/" component={BasePage}>
 212 |           <IndexRoute component={HomePage} />
 213 |           <Route path="/simplewallet" component={SimpleWallet} />
 214 |         </Route>
 215 |       </Router>
 216 |     )
 217 |   }
 218 | });
 219 | 
 220 | module.exports = Routes;
 221 | ```
 222 | 
 223 | ## Create BasePage.jsx
 224 | This creates the common components of our application such as a Navigation Bar.
 225 | 
 226 | ```JSX
 227 | var React = require('react');
 228 | var NavBar = require('./nav/NavBar.jsx');
 229 | 
 230 | var navLinks = [{title: "Simple Wallet", href: "/simplewallet"}];
 231 | 
 232 | var BasePage = React.createClass({
 233 |   render: function() {
 234 |     return (
 235 |       <div>
 236 |         <NavBar navData={navLinks} />
 237 |         {this.props.children}
 238 |       </div>
 239 |     );
 240 |   }
 241 | });
 242 | 
 243 | module.exports = BasePage;
 244 | ```
 245 | 
 246 | ## Create a bootstrap NavBar and associated NavItem components
 247 | ```JSX
 248 | var React = require('react');
 249 | var NavItem = require('./NavItem.jsx');
 250 | var ReactRouter = require('react-router');
 251 | var Link = ReactRouter.Link;
 252 | 
 253 | var NavBar = React.createClass({
 254 |   render: function() {
 255 | 
 256 |     var navStyle = {
 257 |       WebkitBoxShadow: "0 0 4px rgba(0,0,0,0.4)",
 258 |       MozBoxShadow: "0 0 4px rgba(0,0,0,0.4)",
 259 |       boxShadow: "0 0 4px rgba(0,0,0,0.4)",
 260 |       borderRadius: 0
 261 |     };
 262 | 
 263 |     var createLinkItem = function(item, index) {
 264 |       return <NavItem key={item.title + index} href={item.href} title={item.title} />
 265 |     };
 266 | 
 267 |     return (
 268 |       <div>
 269 |         <nav style={navStyle} className="navbar navbar-default">
 270 |           <div className="container-fluid">
 271 |             <div className="navbar-header">
 272 |               <button type="button" className="navbar-toggle collapsed" data-toggle="collapse" data-target="#nav-collapse">
 273 |                 <span className="icon-bar"></span>
 274 |                 <span className="icon-bar"></span>
 275 |                 <span className="icon-bar"></span>
 276 |               </button>
 277 |               <Link className="navbar-brand" to="/">react-dapp</Link>
 278 |             </div>
 279 |             <div className="collapse navbar-collapse" id="nav-collapse">
 280 |               <ul className="nav navbar-nav">{this.props.navData.map(createLinkItem)} </ul>
 281 |             </div>
 282 |           </div>
 283 |         </nav>
 284 |       </div>
 285 |     );
 286 |   }
 287 | });
 288 | 
 289 | module.exports = NavBar;
 290 | ```
 291 | 
 292 | ```JSX
 293 | var React = require('react');
 294 | var ReactRouter = require('react-router');
 295 | var Link = ReactRouter.Link;
 296 | 
 297 | var NavItem = React.createClass({
 298 |   getInitialState: function() {
 299 |     return {hover: false};
 300 |   },
 301 |   mouseOver: function(e) {
 302 |     this.setState({hover: true});
 303 |   },
 304 |   mouseOut: function(e) {
 305 |     this.setState({hover: false});
 306 |   },
 307 |   render: function() {
 308 |     return (
 309 |       <li className={this.state.hover ? "active" : ""} onMouseOver={this.mouseOver} onMouseOut={this.mouseOut}>
 310 |         <Link style={this.props.aStyle} to={this.props.href}>{this.props.title}</Link>
 311 |       </li>
 312 |     );
 313 |   }
 314 | });
 315 | 
 316 | module.exports = NavItem;
 317 | ```
 318 | 
 319 | ## Create the HomePage.jsx component
 320 | ```JSX
 321 | var React = require('react');
 322 | var ReactRouter = require('react-router');
 323 | var Link = ReactRouter.Link;
 324 | 
 325 | var HomePage = React.createClass({
 326 |   render: function() {
 327 |     return (
 328 |       <div>
 329 |         <h1>Welcome to react-dapp.</h1>
 330 |         <p>If you're wondering how you got here,
 331 |           see <Link to="https://github.com/davidoevans/react-dapp">react-dapp</Link>
 332 |         </p>
 333 |       </div>
 334 |     );
 335 |   }
 336 | });
 337 | 
 338 | module.exports = HomePage;
 339 | ```
 340 | 
 341 | ## Create the SimpleWallet.jsx component
 342 | 
 343 | ## Introduce RefluxJS
 344 | This will introduce a unidirectional dataflow architecture which enables any
 345 | registered components to 'react' to events they are registered to.  We'll use
 346 | this along with Solidity Smart Contract events to make some dynamic components
 347 | in our Dapp.
 348 | 
 349 | See [React.js + Reflux Example](https://blog.ochronus.com/react-js-reflux-example-2d46a4d8faf0#.qujzxaj9d)
 350 | for a good explanation.
 351 | 
 352 | 
 353 | Install reflux.
 354 | ```Linux
 355 | npm install --save-dev reflux
 356 | ```
 357 | 
 358 | Create `src/components/reflux/actions.jsx`
 359 | 
 360 | ```JSX
 361 | import Reflux from 'reflux';
 362 | 
 363 | var Actions = Reflux.createActions([
 364 |   'getAccounts'
 365 | ]);
 366 | 
 367 | module.exports = Actions;
 368 | ```
 369 | 
 370 | ## Create AccountStore
 371 | AccountStore will implement `getAccounts` and other Account related services.
 372 | 
 373 | # Creating the SimpleWallet contract
 374 | 
 375 | -----------------------------
 376 | 
 377 | ## Sending Feedback
 378 | 
 379 | We are always open to [your feedback](https://github.com/facebookincubator/create-react-app/issues).
 380 | 
 381 | 
 382 | In the project directory, you can run:
 383 | 
 384 | ### `npm start`
 385 | 
 386 | Runs the app in the development mode.<br>
 387 | Open [http://localhost:3000](http://localhost:3000) to view it in the browser.
 388 | 
 389 | The page will reload if you make edits.<br>
 390 | You will also see any lint errors in the console.
 391 | 
 392 | ### `npm test`
 393 | 
 394 | Launches the test runner in the interactive watch mode.<br>
 395 | See the section about [running tests](#running-tests) for more information.
 396 | 
 397 | ### `npm run build`
 398 | 
 399 | Builds the app for production to the `build` folder.<br>
 400 | It correctly bundles React in production mode and optimizes the build for the best performance.
 401 | 
 402 | The build is minified and the filenames include the hashes.<br>
 403 | Your app is ready to be deployed!
 404 | 
 405 | See the section about [deployment](#deployment) for more information.
 406 | 
 407 | ### `npm run eject`
 408 | 
 409 | **Note: this is a one-way operation. Once you `eject`, you can’t go back!**
 410 | 
 411 | If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
 412 | 
 413 | Instead, it will copy all the configuration files and the transitive dependencies (Webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.
 414 | 
 415 | You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.
 416 | 
 417 | ## Syntax Highlighting in the Editor
 418 | 
 419 | To configure the syntax highlighting in your favorite text editor, head to the [Babel's docs](https://babeljs.io/docs/editors) and follow the instructions. Some of the most popular editors are covered.
 420 | 
 421 | ## Displaying Lint Output in the Editor
 422 | 
 423 | >Note: this feature is available with `react-scripts@0.2.0` and higher.
 424 | 
 425 | Some editors, including Sublime Text, Atom, and Visual Studio Code, provide plugins for ESLint.
 426 | 
 427 | They are not required for linting. You should see the linter output right in your terminal as well as the browser console. However, if you prefer the lint results to appear right in your editor, there are some extra steps you can do.
 428 | 
 429 | You would need to install an ESLint plugin for your editor first.
 430 | 
 431 | >**A note for Atom `linter-eslint` users**
 432 | 
 433 | >If you are using the Atom `linter-eslint` plugin, make sure that **Use global ESLint installation** option is checked:
 434 | 
 435 | ><img src="http://i.imgur.com/yVNNHJM.png" width="300">
 436 | 
 437 | Then add this block to the `package.json` file of your project:
 438 | 
 439 | ```js
 440 | {
 441 |   // ...
 442 |   "eslintConfig": {
 443 |     "extends": "react-app"
 444 |   }
 445 | }
 446 | ```
 447 | 
 448 | Finally, you will need to install some packages *globally*:
 449 | 
 450 | ```sh
 451 | npm install -g eslint-config-react-app@0.3.0 eslint@3.8.1 babel-eslint@7.0.0 eslint-plugin-react@6.4.1 eslint-plugin-import@2.0.1 eslint-plugin-jsx-a11y@2.2.3 eslint-plugin-flowtype@2.21.0
 452 | ```
 453 | 
 454 | We recognize that this is suboptimal, but it is currently required due to the way we hide the ESLint dependency. The ESLint team is already [working on a solution to this](https://github.com/eslint/eslint/issues/3458) so this may become unnecessary in a couple of months.
 455 | 
 456 | ## Installing a Dependency
 457 | 
 458 | The generated project includes React and ReactDOM as dependencies. It also includes a set of scripts used by Create React App as a development dependency. You may install other dependencies (for example, React Router) with `npm`:
 459 | 
 460 | ```
 461 | npm install --save <library-name>
 462 | ```
 463 | 
 464 | ## Importing a Component
 465 | 
 466 | This project setup supports ES6 modules thanks to Babel.<br>
 467 | While you can still use `require()` and `module.exports`, we encourage you to use [`import` and `export`](http://exploringjs.com/es6/ch_modules.html) instead.
 468 | 
 469 | For example:
 470 | 
 471 | ### `Button.js`
 472 | 
 473 | ```js
 474 | import React, { Component } from 'react';
 475 | 
 476 | class Button extends Component {
 477 |   render() {
 478 |     // ...
 479 |   }
 480 | }
 481 | 
 482 | export default Button; // Don’t forget to use export default!
 483 | ```
 484 | 
 485 | ### `DangerButton.js`
 486 | 
 487 | 
 488 | ```js
 489 | import React, { Component } from 'react';
 490 | import Button from './Button'; // Import a component from another file
 491 | 
 492 | class DangerButton extends Component {
 493 |   render() {
 494 |     return <Button color="red" />;
 495 |   }
 496 | }
 497 | 
 498 | export default DangerButton;
 499 | ```
 500 | 
 501 | Be aware of the [difference between default and named exports](http://stackoverflow.com/questions/36795819/react-native-es-6-when-should-i-use-curly-braces-for-import/36796281#36796281). It is a common source of mistakes.
 502 | 
 503 | We suggest that you stick to using default imports and exports when a module only exports a single thing (for example, a component). That’s what you get when you use `export default Button` and `import Button from './Button'`.
 504 | 
 505 | Named exports are useful for utility modules that export several functions. A module may have at most one default export and as many named exports as you like.
 506 | 
 507 | Learn more about ES6 modules:
 508 | 
 509 | * [When to use the curly braces?](http://stackoverflow.com/questions/36795819/react-native-es-6-when-should-i-use-curly-braces-for-import/36796281#36796281)
 510 | * [Exploring ES6: Modules](http://exploringjs.com/es6/ch_modules.html)
 511 | * [Understanding ES6: Modules](https://leanpub.com/understandinges6/read#leanpub-auto-encapsulating-code-with-modules)
 512 | 
 513 | ## Adding a Stylesheet
 514 | 
 515 | This project setup uses [Webpack](https://webpack.github.io/) for handling all assets. Webpack offers a custom way of “extending” the concept of `import` beyond JavaScript. To express that a JavaScript file depends on a CSS file, you need to **import the CSS from the JavaScript file**:
 516 | 
 517 | ### `Button.css`
 518 | 
 519 | ```css
 520 | .Button {
 521 |   padding: 20px;
 522 | }
 523 | ```
 524 | 
 525 | ### `Button.js`
 526 | 
 527 | ```js
 528 | import React, { Component } from 'react';
 529 | import './Button.css'; // Tell Webpack that Button.js uses these styles
 530 | 
 531 | class Button extends Component {
 532 |   render() {
 533 |     // You can use them as regular CSS styles
 534 |     return <div className="Button" />;
 535 |   }
 536 | }
 537 | ```
 538 | 
 539 | **This is not required for React** but many people find this feature convenient. You can read about the benefits of this approach [here](https://medium.com/seek-ui-engineering/block-element-modifying-your-javascript-components-d7f99fcab52b). However you should be aware that this makes your code less portable to other build tools and environments than Webpack.
 540 | 
 541 | In development, expressing dependencies this way allows your styles to be reloaded on the fly as you edit them. In production, all CSS files will be concatenated into a single minified `.css` file in the build output.
 542 | 
 543 | If you are concerned about using Webpack-specific semantics, you can put all your CSS right into `src/index.css`. It would still be imported from `src/index.js`, but you could always remove that import if you later migrate to a different build tool.
 544 | 
 545 | ## Post-Processing CSS
 546 | 
 547 | This project setup minifies your CSS and adds vendor prefixes to it automatically through [Autoprefixer](https://github.com/postcss/autoprefixer) so you don’t need to worry about it.
 548 | 
 549 | For example, this:
 550 | 
 551 | ```css
 552 | .App {
 553 |   display: flex;
 554 |   flex-direction: row;
 555 |   align-items: center;
 556 | }
 557 | ```
 558 | 
 559 | becomes this:
 560 | 
 561 | ```css
 562 | .App {
 563 |   display: -webkit-box;
 564 |   display: -ms-flexbox;
 565 |   display: flex;
 566 |   -webkit-box-orient: horizontal;
 567 |   -webkit-box-direction: normal;
 568 |       -ms-flex-direction: row;
 569 |           flex-direction: row;
 570 |   -webkit-box-align: center;
 571 |       -ms-flex-align: center;
 572 |           align-items: center;
 573 | }
 574 | ```
 575 | 
 576 | There is currently no support for preprocessors such as Less, or for sharing variables across CSS files.
 577 | 
 578 | ## Adding Images and Fonts
 579 | 
 580 | With Webpack, using static assets like images and fonts works similarly to CSS.
 581 | 
 582 | You can **`import` an image right in a JavaScript module**. This tells Webpack to include that image in the bundle. Unlike CSS imports, importing an image or a font gives you a string value. This value is the final image path you can reference in your code.
 583 | 
 584 | Here is an example:
 585 | 
 586 | ```js
 587 | import React from 'react';
 588 | import logo from './logo.png'; // Tell Webpack this JS file uses this image
 589 | 
 590 | console.log(logo); // /logo.84287d09.png
 591 | 
 592 | function Header() {
 593 |   // Import result is the URL of your image
 594 |   return <img src={logo} alt="Logo" />;
 595 | }
 596 | 
 597 | export default Header;
 598 | ```
 599 | 
 600 | This ensures that when the project is built, Webpack will correctly move the images into the build folder, and provide us with correct paths.
 601 | 
 602 | This works in CSS too:
 603 | 
 604 | ```css
 605 | .Logo {
 606 |   background-image: url(./logo.png);
 607 | }
 608 | ```
 609 | 
 610 | Webpack finds all relative module references in CSS (they start with `./`) and replaces them with the final paths from the compiled bundle. If you make a typo or accidentally delete an important file, you will see a compilation error, just like when you import a non-existent JavaScript module. The final filenames in the compiled bundle are generated by Webpack from content hashes. If the file content changes in the future, Webpack will give it a different name in production so you don’t need to worry about long-term caching of assets.
 611 | 
 612 | Please be advised that this is also a custom feature of Webpack.
 613 | 
 614 | **It is not required for React** but many people enjoy it (and React Native uses a similar mechanism for images).<br>
 615 | An alternative way of handling static assets is described in the next section.
 616 | 
 617 | ## Using the `public` Folder
 618 | 
 619 | >Note: this feature is available with `react-scripts@0.5.0` and higher.
 620 | 
 621 | Normally we encourage you to `import` assets in JavaScript files as described above. This mechanism provides a number of benefits:
 622 | 
 623 | * Scripts and stylesheets get minified and bundled together to avoid extra network requests.
 624 | * Missing files cause compilation errors instead of 404 errors for your users.
 625 | * Result filenames include content hashes so you don’t need to worry about browsers caching their old versions.
 626 | 
 627 | However there is an **escape hatch** that you can use to add an asset outside of the module system.
 628 | 
 629 | If you put a file into the `public` folder, it will **not** be processed by Webpack. Instead it will be copied into the build folder untouched.   To reference assets in the `public` folder, you need to use a special variable called `PUBLIC_URL`.
 630 | 
 631 | Inside `index.html`, you can use it like this:
 632 | 
 633 | ```html
 634 | <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
 635 | ```
 636 | 
 637 | Only files inside the `public` folder will be accessible by `%PUBLIC_URL%` prefix. If you need to use a file from `src` or `node_modules`, you’ll have to copy it there to explicitly specify your intention to make this file a part of the build.
 638 | 
 639 | When you run `npm run build`, Create React App will substitute `%PUBLIC_URL%` with a correct absolute path so your project works even if you use client-side routing or host it at a non-root URL.
 640 | 
 641 | In JavaScript code, you can use `process.env.PUBLIC_URL` for similar purposes:
 642 | 
 643 | ```js
 644 | render() {
 645 |   // Note: this is an escape hatch and should be used sparingly!
 646 |   // Normally we recommend using `import` for getting asset URLs
 647 |   // as described in “Adding Images and Fonts” above this section.
 648 |   return <img src={process.env.PUBLIC_URL + '/img/logo.png'} />;
 649 | }
 650 | ```
 651 | 
 652 | Keep in mind the downsides of this approach:
 653 | 
 654 | * None of the files in `public` folder get post-processed or minified.
 655 | * Missing files will not be called at compilation time, and will cause 404 errors for your users.
 656 | * Result filenames won’t include content hashes so you’ll need to add query arguments or rename them every time they change.
 657 | 
 658 | However, it can be handy for referencing assets like [`manifest.webmanifest`](https://developer.mozilla.org/en-US/docs/Web/Manifest) from HTML, or including small scripts like [`pace.js`](http://github.hubspot.com/pace/docs/welcome/) outside of the bundled code.
 659 | 
 660 | Note that if you add a `<script>` that declares global variables, you also need to read the next section on using them.
 661 | 
 662 | ## Using Global Variables
 663 | 
 664 | When you include a script in the HTML file that defines global variables and try to use one of these variables in the code, the linter will complain because it cannot see the definition of the variable.
 665 | 
 666 | You can avoid this by reading the global variable explicitly from the `window` object, for example:
 667 | 
 668 | ```js
 669 | const $ = window.$;
 670 | ```
 671 | 
 672 | This makes it obvious you are using a global variable intentionally rather than because of a typo.
 673 | 
 674 | Alternatively, you can force the linter to ignore any line by adding `// eslint-disable-line` after it.
 675 | 
 676 | ## Adding Bootstrap
 677 | 
 678 | You don’t have to use [React Bootstrap](https://react-bootstrap.github.io) together with React but it is a popular library for integrating Bootstrap with React apps. If you need it, you can integrate it with Create React App by following these steps:
 679 | 
 680 | Install React Bootstrap and Bootstrap from NPM. React Bootstrap does not include Bootstrap CSS so this needs to be installed as well:
 681 | 
 682 | ```
 683 | npm install react-bootstrap --save
 684 | npm install bootstrap@3 --save
 685 | ```
 686 | 
 687 | Import Bootstrap CSS and optionally Bootstrap theme CSS in the ```src/index.js``` file:
 688 | 
 689 | ```js
 690 | import 'bootstrap/dist/css/bootstrap.css';
 691 | import 'bootstrap/dist/css/bootstrap-theme.css';
 692 | ```
 693 | 
 694 | Import required React Bootstrap components within ```src/App.js``` file or your custom component files:
 695 | 
 696 | ```js
 697 | import { Navbar, Jumbotron, Button } from 'react-bootstrap';
 698 | ```
 699 | 
 700 | Now you are ready to use the imported React Bootstrap components within your component hierarchy defined in the render method. Here is an example [`App.js`](https://gist.githubusercontent.com/gaearon/85d8c067f6af1e56277c82d19fd4da7b/raw/6158dd991b67284e9fc8d70b9d973efe87659d72/App.js) redone using React Bootstrap.
 701 | 
 702 | ## Adding Flow
 703 | 
 704 | Flow typing is currently [not supported out of the box](https://github.com/facebookincubator/create-react-app/issues/72) with the default `.flowconfig` generated by Flow. If you run it, you might get errors like this:
 705 | 
 706 | ```js
 707 | node_modules/fbjs/lib/Deferred.js.flow:60
 708 |  60:     Promise.prototype.done.apply(this._promise, arguments);
 709 |                            ^^^^ property `done`. Property not found in
 710 | 495: declare class Promise<+R> {
 711 |      ^ Promise. See lib: /private/tmp/flow/flowlib_34952d31/core.js:495
 712 | 
 713 | node_modules/fbjs/lib/shallowEqual.js.flow:29
 714 |  29:     return x !== 0 || 1 / (x: $FlowIssue) === 1 / (y: $FlowIssue);
 715 |                                    ^^^^^^^^^^ identifier `$FlowIssue`. Could not resolve name
 716 | ```
 717 | 
 718 | To fix this, change your `.flowconfig` to look like this:
 719 | 
 720 | ```ini
 721 | [ignore]
 722 | <PROJECT_ROOT>/node_modules/fbjs/.*
 723 | ```
 724 | 
 725 | Re-run flow, and you shouldn’t get any extra issues.
 726 | 
 727 | ## Adding Custom Environment Variables
 728 | 
 729 | >Note: this feature is available with `react-scripts@0.2.3` and higher.
 730 | 
 731 | Your project can consume variables declared in your environment as if they were declared locally in your JS files. By
 732 | default you will have `NODE_ENV` defined for you, and any other environment variables starting with
 733 | `REACT_APP_`. These environment variables will be defined for you on `process.env`. For example, having an environment
 734 | variable named `REACT_APP_SECRET_CODE` will be exposed in your JS as `process.env.REACT_APP_SECRET_CODE`, in addition
 735 | to `process.env.NODE_ENV`.
 736 | 
 737 | >Note: Changing any environment variables will require you to restart the development server if it is running.
 738 | 
 739 | These environment variables can be useful for displaying information conditionally based on where the project is
 740 | deployed or consuming sensitive data that lives outside of version control.
 741 | 
 742 | First, you need to have environment variables defined. For example, let’s say you wanted to consume a secret defined
 743 | in the environment inside a `<form>`:
 744 | 
 745 | ```jsx
 746 | render() {
 747 |   return (
 748 |     <div>
 749 |       <small>You are running this application in <b>{process.env.NODE_ENV}</b> mode.</small>
 750 |       <form>
 751 |         <input type="hidden" defaultValue={process.env.REACT_APP_SECRET_CODE} />
 752 |       </form>
 753 |     </div>
 754 |   );
 755 | }
 756 | ```
 757 | 
 758 | During the build, `process.env.REACT_APP_SECRET_CODE` will be replaced with the current value of the `REACT_APP_SECRET_CODE` environment variable. Remember that the `NODE_ENV` variable will be set for you automatically.
 759 | 
 760 | When you load the app in the browser and inspect the `<input>`, you will see its value set to `abcdef`, and the bold text will show the environment provided when using `npm start`:
 761 | 
 762 | ```html
 763 | <div>
 764 |   <small>You are running this application in <b>development</b> mode.</small>
 765 |   <form>
 766 |     <input type="hidden" value="abcdef" />
 767 |   </form>
 768 | </div>
 769 | ```
 770 | 
 771 | Having access to the `NODE_ENV` is also useful for performing actions conditionally:
 772 | 
 773 | ```js
 774 | if (process.env.NODE_ENV !== 'production') {
 775 |   analytics.disable();
 776 | }
 777 | ```
 778 | 
 779 | The above form is looking for a variable called `REACT_APP_SECRET_CODE` from the environment. In order to consume this
 780 | value, we need to have it defined in the environment. This can be done using two ways: either in your shell or in
 781 | a `.env` file.
 782 | 
 783 | ### Adding Temporary Environment Variables In Your Shell
 784 | 
 785 | Defining environment variables can vary between OSes. It's also important to know that this manner is temporary for the
 786 | life of the shell session.
 787 | 
 788 | #### Windows (cmd.exe)
 789 | 
 790 | ```cmd
 791 | set REACT_APP_SECRET_CODE=abcdef&&npm start
 792 | ```
 793 | 
 794 | (Note: the lack of whitespace is intentional.)
 795 | 
 796 | #### Linux, OS X (Bash)
 797 | 
 798 | ```bash
 799 | REACT_APP_SECRET_CODE=abcdef npm start
 800 | ```
 801 | 
 802 | ### Adding Development Environment Variables In `.env`
 803 | 
 804 | >Note: this feature is available with `react-scripts@0.5.0` and higher.
 805 | 
 806 | To define permanent environment variables, create a file called `.env` in the root of your project:
 807 | 
 808 | ```
 809 | REACT_APP_SECRET_CODE=abcdef
 810 | ```
 811 | 
 812 | These variables will act as the defaults if the machine does not explicitly set them.<br>
 813 | Please refer to the [dotenv documentation](https://github.com/motdotla/dotenv) for more details.
 814 | 
 815 | >Note: If you are defining environment variables for development, your CI and/or hosting platform will most likely need
 816 | these defined as well. Consult their documentation how to do this. For example, see the documentation for [Travis CI](https://docs.travis-ci.com/user/environment-variables/) or [Heroku](https://devcenter.heroku.com/articles/config-vars).
 817 | 
 818 | ## Can I Use Decorators?
 819 | 
 820 | Many popular libraries use [decorators](https://medium.com/google-developers/exploring-es7-decorators-76ecb65fb841) in their documentation.<br>
 821 | Create React App doesn’t support decorator syntax at the moment because:
 822 | 
 823 | * It is an experimental proposal and is subject to change.
 824 | * The current specification version is not officially supported by Babel.
 825 | * If the specification changes, we won’t be able to write a codemod because we don’t use them internally at Facebook.
 826 | 
 827 | However in many cases you can rewrite decorator-based code without decorators just as fine.<br>
 828 | Please refer to these two threads for reference:
 829 | 
 830 | * [#214](https://github.com/facebookincubator/create-react-app/issues/214)
 831 | * [#411](https://github.com/facebookincubator/create-react-app/issues/411)
 832 | 
 833 | Create React App will add decorator support when the specification advances to a stable stage.
 834 | 
 835 | ## Integrating with a Node Backend
 836 | 
 837 | Check out [this tutorial](https://www.fullstackreact.com/articles/using-create-react-app-with-a-server/) for instructions on integrating an app with a Node backend running on another port, and using `fetch()` to access it. You can find the companion GitHub repository [here](https://github.com/fullstackreact/food-lookup-demo).
 838 | 
 839 | ## Proxying API Requests in Development
 840 | 
 841 | >Note: this feature is available with `react-scripts@0.2.3` and higher.
 842 | 
 843 | People often serve the front-end React app from the same host and port as their backend implementation.<br>
 844 | For example, a production setup might look like this after the app is deployed:
 845 | 
 846 | ```
 847 | /             - static server returns index.html with React app
 848 | /todos        - static server returns index.html with React app
 849 | /api/todos    - server handles any /api/* requests using the backend implementation
 850 | ```
 851 | 
 852 | Such setup is **not** required. However, if you **do** have a setup like this, it is convenient to write requests like `fetch('/api/todos')` without worrying about redirecting them to another host or port during development.
 853 | 
 854 | To tell the development server to proxy any unknown requests to your API server in development, add a `proxy` field to your `package.json`, for example:
 855 | 
 856 | ```js
 857 |   "proxy": "http://localhost:4000",
 858 | ```
 859 | 
 860 | This way, when you `fetch('/api/todos')` in development, the development server will recognize that it’s not a static asset, and will proxy your request to `http://localhost:4000/api/todos` as a fallback. The development server will only attempt to send requests without a `text/html` accept header to the proxy.
 861 | 
 862 | Conveniently, this avoids [CORS issues](http://stackoverflow.com/questions/21854516/understanding-ajax-cors-and-security-considerations) and error messages like this in development:
 863 | 
 864 | ```
 865 | Fetch API cannot load http://localhost:4000/api/todos. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:3000' is therefore not allowed access. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.
 866 | ```
 867 | 
 868 | Keep in mind that `proxy` only has effect in development (with `npm start`), and it is up to you to ensure that URLs like `/api/todos` point to the right thing in production. You don’t have to use the `/api` prefix. Any unrecognized request without a `text/html` accept header will be redirected to the specified `proxy`.
 869 | 
 870 | Currently the `proxy` option only handles HTTP requests, and it won’t proxy WebSocket connections.<br>
 871 | If the `proxy` option is **not** flexible enough for you, alternatively you can:
 872 | 
 873 | * Enable CORS on your server ([here’s how to do it for Express](http://enable-cors.org/server_expressjs.html)).
 874 | * Use [environment variables](#adding-custom-environment-variables) to inject the right server host and port into your app.
 875 | 
 876 | ## Using HTTPS in Development
 877 | 
 878 | >Note: this feature is available with `react-scripts@0.4.0` and higher.
 879 | 
 880 | You may require the dev server to serve pages over HTTPS. One particular case where this could be useful is when using [the "proxy" feature](#proxying-api-requests-in-development) to proxy requests to an API server when that API server is itself serving HTTPS.
 881 | 
 882 | To do this, set the `HTTPS` environment variable to `true`, then start the dev server as usual with `npm start`:
 883 | 
 884 | #### Windows (cmd.exe)
 885 | 
 886 | ```cmd
 887 | set HTTPS=true&&npm start
 888 | ```
 889 | 
 890 | (Note: the lack of whitespace is intentional.)
 891 | 
 892 | #### Linux, OS X (Bash)
 893 | 
 894 | ```bash
 895 | HTTPS=true npm start
 896 | ```
 897 | 
 898 | Note that the server will use a self-signed certificate, so your web browser will almost definitely display a warning upon accessing the page.
 899 | 
 900 | ## Generating Dynamic `<meta>` Tags on the Server
 901 | 
 902 | Since Create React App doesn’t support server rendering, you might be wondering how to make `<meta>` tags dynamic and reflect the current URL. To solve this, we recommend to add placeholders into the HTML, like this:
 903 | 
 904 | ```html
 905 | <!doctype html>
 906 | <html lang="en">
 907 |   <head>
 908 |     <meta property="og:title" content="%OG_TITLE%">
 909 |     <meta property="og:description" content="%OG_DESCRIPTION%">
 910 | ```
 911 | 
 912 | Then, on the server, regardless of the backend you use, you can read `index.html` into memory and replace `%OG_TITLE%`, `%OG_DESCRIPTION%`, and any other placeholders with values depending on the current URL. Just make sure to sanitize and escape the interpolated values so that they are safe to embed into HTML!
 913 | 
 914 | If you use a Node server, you can even share the route matching logic between the client and the server. However duplicating it also works fine in simple cases.
 915 | 
 916 | ## Running Tests
 917 | 
 918 | >Note: this feature is available with `react-scripts@0.3.0` and higher.<br>
 919 | >[Read the migration guide to learn how to enable it in older projects!](https://github.com/facebookincubator/create-react-app/blob/master/CHANGELOG.md#migrating-from-023-to-030)
 920 | 
 921 | Create React App uses [Jest](https://facebook.github.io/jest/) as its test runner. To prepare for this integration, we did a [major revamp](https://facebook.github.io/jest/blog/2016/09/01/jest-15.html) of Jest so if you heard bad things about it years ago, give it another try.
 922 | 
 923 | Jest is a Node-based runner. This means that the tests always run in a Node environment and not in a real browser. This lets us enable fast iteration speed and prevent flakiness.
 924 | 
 925 | While Jest provides browser globals such as `window` thanks to [jsdom](https://github.com/tmpvar/jsdom), they are only approximations of the real browser behavior. Jest is intended to be used for unit tests of your logic and your components rather than the DOM quirks.
 926 | 
 927 | We recommend that you use a separate tool for browser end-to-end tests if you need them. They are beyond the scope of Create React App.
 928 | 
 929 | ### Filename Conventions
 930 | 
 931 | Jest will look for test files with any of the following popular naming conventions:
 932 | 
 933 | * Files with `.js` suffix in `__tests__` folders.
 934 | * Files with `.test.js` suffix.
 935 | * Files with `.spec.js` suffix.
 936 | 
 937 | The `.test.js` / `.spec.js` files (or the `__tests__` folders) can be located at any depth under the `src` top level folder.
 938 | 
 939 | We recommend to put the test files (or `__tests__` folders) next to the code they are testing so that relative imports appear shorter. For example, if `App.test.js` and `App.js` are in the same folder, the test just needs to `import App from './App'` instead of a long relative path. Colocation also helps find tests more quickly in larger projects.
 940 | 
 941 | ### Command Line Interface
 942 | 
 943 | When you run `npm test`, Jest will launch in the watch mode. Every time you save a file, it will re-run the tests, just like `npm start` recompiles the code.
 944 | 
 945 | The watcher includes an interactive command-line interface with the ability to run all tests, or focus on a search pattern. It is designed this way so that you can keep it open and enjoy fast re-runs. You can learn the commands from the “Watch Usage” note that the watcher prints after every run:
 946 | 
 947 | ![Jest watch mode](http://facebook.github.io/jest/img/blog/15-watch.gif)
 948 | 
 949 | ### Version Control Integration
 950 | 
 951 | By default, when you run `npm test`, Jest will only run the tests related to files changed since the last commit. This is an optimization designed to make your tests runs fast regardless of how many tests you have. However it assumes that you don’t often commit the code that doesn’t pass the tests.
 952 | 
 953 | Jest will always explicitly mention that it only ran tests related to the files changed since the last commit. You can also press `a` in the watch mode to force Jest to run all tests.
 954 | 
 955 | Jest will always run all tests on a [continuous integration](#continuous-integration) server or if the project is not inside a Git or Mercurial repository.
 956 | 
 957 | ### Writing Tests
 958 | 
 959 | To create tests, add `it()` (or `test()`) blocks with the name of the test and its code. You may optionally wrap them in `describe()` blocks for logical grouping but this is neither required nor recommended.
 960 | 
 961 | Jest provides a built-in `expect()` global function for making assertions. A basic test could look like this:
 962 | 
 963 | ```js
 964 | import sum from './sum';
 965 | 
 966 | it('sums numbers', () => {
 967 |   expect(sum(1, 2)).toEqual(3);
 968 |   expect(sum(2, 2)).toEqual(4);
 969 | });
 970 | ```
 971 | 
 972 | All `expect()` matchers supported by Jest are [extensively documented here](http://facebook.github.io/jest/docs/api.html#expect-value).<br>
 973 | You can also use [`jest.fn()` and `expect(fn).toBeCalled()`](http://facebook.github.io/jest/docs/api.html#tobecalled) to create “spies” or mock functions.
 974 | 
 975 | ### Testing Components
 976 | 
 977 | There is a broad spectrum of component testing techniques. They range from a “smoke test” verifying that a component renders without throwing, to shallow rendering and testing some of the output, to full rendering and testing component lifecycle and state changes.
 978 | 
 979 | Different projects choose different testing tradeoffs based on how often components change, and how much logic they contain. If you haven’t decided on a testing strategy yet, we recommend that you start with creating simple smoke tests for your components:
 980 | 
 981 | ```js
 982 | import React from 'react';
 983 | import ReactDOM from 'react-dom';
 984 | import App from './App';
 985 | 
 986 | it('renders without crashing', () => {
 987 |   const div = document.createElement('div');
 988 |   ReactDOM.render(<App />, div);
 989 | });
 990 | ```
 991 | 
 992 | This test mounts a component and makes sure that it didn’t throw during rendering. Tests like this provide a lot value with very little effort so they are great as a starting point, and this is the test you will find in `src/App.test.js`.
 993 | 
 994 | When you encounter bugs caused by changing components, you will gain a deeper insight into which parts of them are worth testing in your application. This might be a good time to introduce more specific tests asserting specific expected output or behavior.
 995 | 
 996 | If you’d like to test components in isolation from the child components they render, we recommend using [`shallow()` rendering API](http://airbnb.io/enzyme/docs/api/shallow.html) from [Enzyme](http://airbnb.io/enzyme/). You can write a smoke test with it too:
 997 | 
 998 | ```sh
 999 | npm install --save-dev enzyme react-addons-test-utils
1000 | ```
1001 | 
1002 | ```js
1003 | import React from 'react';
1004 | import { shallow } from 'enzyme';
1005 | import App from './App';
1006 | 
1007 | it('renders without crashing', () => {
1008 |   shallow(<App />);
1009 | });
1010 | ```
1011 | 
1012 | Unlike the previous smoke test using `ReactDOM.render()`, this test only renders `<App>` and doesn’t go deeper. For example, even if `<App>` itself renders a `<Button>` that throws, this test will pass. Shallow rendering is great for isolated unit tests, but you may still want to create some full rendering tests to ensure the components integrate correctly. Enzyme supports [full rendering with `mount()`](http://airbnb.io/enzyme/docs/api/mount.html), and you can also use it for testing state changes and component lifecycle.
1013 | 
1014 | You can read the [Enzyme documentation](http://airbnb.io/enzyme/) for more testing techniques. Enzyme documentation uses Chai and Sinon for assertions but you don’t have to use them because Jest provides built-in `expect()` and `jest.fn()` for spies.
1015 | 
1016 | Here is an example from Enzyme documentation that asserts specific output, rewritten to use Jest matchers:
1017 | 
1018 | ```js
1019 | import React from 'react';
1020 | import { shallow } from 'enzyme';
1021 | import App from './App';
1022 | 
1023 | it('renders welcome message', () => {
1024 |   const wrapper = shallow(<App />);
1025 |   const welcome = <h2>Welcome to React</h2>;
1026 |   // expect(wrapper.contains(welcome)).to.equal(true);
1027 |   expect(wrapper.contains(welcome)).toEqual(true);
1028 | });
1029 | ```
1030 | 
1031 | All Jest matchers are [extensively documented here](http://facebook.github.io/jest/docs/api.html#expect-value).<br>
1032 | Nevertheless you can use a third-party assertion library like [Chai](http://chaijs.com/) if you want to, as described below.
1033 | 
1034 | ### Using Third Party Assertion Libraries
1035 | 
1036 | We recommend that you use `expect()` for assertions and `jest.fn()` for spies. If you are having issues with them please [file those against Jest](https://github.com/facebook/jest/issues/new), and we’ll fix them. We intend to keep making them better for React, supporting, for example, [pretty-printing React elements as JSX](https://github.com/facebook/jest/pull/1566).
1037 | 
1038 | However, if you are used to other libraries, such as [Chai](http://chaijs.com/) and [Sinon](http://sinonjs.org/), or if you have existing code using them that you’d like to port over, you can import them normally like this:
1039 | 
1040 | ```js
1041 | import sinon from 'sinon';
1042 | import { expect } from 'chai';
1043 | ```
1044 | 
1045 | and then use them in your tests like you normally do.
1046 | 
1047 | ### Initializing Test Environment
1048 | 
1049 | >Note: this feature is available with `react-scripts@0.4.0` and higher.
1050 | 
1051 | If your app uses a browser API that you need to mock in your tests or if you just need a global setup before running your tests, add a `src/setupTests.js` to your project. It will be automatically executed before running your tests.
1052 | 
1053 | For example:
1054 | 
1055 | #### `src/setupTests.js`
1056 | ```js
1057 | const localStorageMock = {
1058 |   getItem: jest.fn(),
1059 |   setItem: jest.fn(),
1060 |   clear: jest.fn()
1061 | };
1062 | global.localStorage = localStorageMock
1063 | ```
1064 | 
1065 | ### Focusing and Excluding Tests
1066 | 
1067 | You can replace `it()` with `xit()` to temporarily exclude a test from being executed.<br>
1068 | Similarly, `fit()` lets you focus on a specific test without running any other tests.
1069 | 
1070 | ### Coverage Reporting
1071 | 
1072 | Jest has an integrated coverage reporter that works well with ES6 and requires no configuration.<br>
1073 | Run `npm test -- --coverage` (note extra `--` in the middle) to include a coverage report like this:
1074 | 
1075 | ![coverage report](http://i.imgur.com/5bFhnTS.png)
1076 | 
1077 | Note that tests run much slower with coverage so it is recommended to run it separately from your normal workflow.
1078 | 
1079 | ### Continuous Integration
1080 | 
1081 | By default `npm test` runs the watcher with interactive CLI. However, you can force it to run tests once and finish the process by setting an environment variable called `CI`.
1082 | 
1083 | When creating a build of your application with `npm run build` linter warnings are not checked by default. Like `npm test`, you can force the build to perform a linter warning check by setting the environment variable `CI`. If any warnings are encountered then the build fails.
1084 | 
1085 | Popular CI servers already set the environment variable `CI` by default but you can do this yourself too:
1086 | 
1087 | ### On CI servers
1088 | #### Travis CI
1089 | 
1090 | 1. Following the [Travis Getting started](https://docs.travis-ci.com/user/getting-started/) guide for syncing your GitHub repository with Travis.  You may need to initialize some settings manually in your [profile](https://travis-ci.org/profile) page.
1091 | 1. Add a `.travis.yml` file to your git repository.
1092 | ```
1093 | language: node_js
1094 | node_js:
1095 |   - 4
1096 |   - 6
1097 | cache:
1098 |   directories:
1099 |     - node_modules
1100 | script:
1101 |   - npm test
1102 |   - npm run build
1103 | ```
1104 | 1. Trigger your first build with a git push.
1105 | 1. [Customize your Travis CI Build](https://docs.travis-ci.com/user/customizing-the-build/) if needed.
1106 | 
1107 | ### On your own environment
1108 | ##### Windows (cmd.exe)
1109 | 
1110 | ```cmd
1111 | set CI=true&&npm test
1112 | ```
1113 | 
1114 | ```cmd
1115 | set CI=true&&npm run build
1116 | ```
1117 | 
1118 | (Note: the lack of whitespace is intentional.)
1119 | 
1120 | ##### Linux, OS X (Bash)
1121 | 
1122 | ```bash
1123 | CI=true npm test
1124 | ```
1125 | 
1126 | ```bash
1127 | CI=true npm run build
1128 | ```
1129 | 
1130 | The test command will force Jest to run tests once instead of launching the watcher.
1131 | 
1132 | >  If you find yourself doing this often in development, please [file an issue](https://github.com/facebookincubator/create-react-app/issues/new) to tell us about your use case because we want to make watcher the best experience and are open to changing how it works to accommodate more workflows.
1133 | 
1134 | The build command will check for linter warnings and fail if any are found.
1135 | 
1136 | ### Disabling jsdom
1137 | 
1138 | By default, the `package.json` of the generated project looks like this:
1139 | 
1140 | ```js
1141 |   // ...
1142 |   "scripts": {
1143 |     // ...
1144 |     "test": "react-scripts test --env=jsdom"
1145 |   }
1146 | ```
1147 | 
1148 | If you know that none of your tests depend on [jsdom](https://github.com/tmpvar/jsdom), you can safely remove `--env=jsdom`, and your tests will run faster.<br>
1149 | To help you make up your mind, here is a list of APIs that **need jsdom**:
1150 | 
1151 | * Any browser globals like `window` and `document`
1152 | * [`ReactDOM.render()`](https://facebook.github.io/react/docs/top-level-api.html#reactdom.render)
1153 | * [`TestUtils.renderIntoDocument()`](https://facebook.github.io/react/docs/test-utils.html#renderintodocument) ([a shortcut](https://github.com/facebook/react/blob/34761cf9a252964abfaab6faf74d473ad95d1f21/src/test/ReactTestUtils.js#L83-L91) for the above)
1154 | * [`mount()`](http://airbnb.io/enzyme/docs/api/mount.html) in [Enzyme](http://airbnb.io/enzyme/index.html)
1155 | 
1156 | In contrast, **jsdom is not needed** for the following APIs:
1157 | 
1158 | * [`TestUtils.createRenderer()`](https://facebook.github.io/react/docs/test-utils.html#shallow-rendering) (shallow rendering)
1159 | * [`shallow()`](http://airbnb.io/enzyme/docs/api/shallow.html) in [Enzyme](http://airbnb.io/enzyme/index.html)
1160 | 
1161 | Finally, jsdom is also not needed for [snapshot testing](http://facebook.github.io/jest/blog/2016/07/27/jest-14.html). Longer term, this is the direction we are interested in exploring, but snapshot testing is [not fully baked yet](https://github.com/facebookincubator/create-react-app/issues/372) so we don’t officially encourage its usage yet.
1162 | 
1163 | ### Experimental Snapshot Testing
1164 | 
1165 | Snapshot testing is a new feature of Jest that automatically generates text snapshots of your components and saves them on the disk so if the UI output changes, you get notified without manually writing any assertions on the component output.
1166 | 
1167 | This feature is experimental and still [has major usage issues](https://github.com/facebookincubator/create-react-app/issues/372) so we only encourage you to use it if you like experimental technology. We intend to gradually improve it over time and eventually offer it as the default solution for testing React components, but this will take time. [Read more about snapshot testing.](http://facebook.github.io/jest/blog/2016/07/27/jest-14.html)
1168 | 
1169 | ### Editor Integration
1170 | 
1171 | If you use [Visual Studio Code](https://code.visualstudio.com), there is a [Jest extension](https://github.com/orta/vscode-jest) which works with Create React App out of the box. This provides a lot of IDE-like features while using a text editor: showing the status of a test run with potential fail messages inline, starting and stopping the watcher automatically, and offering one-click snapshot updates.
1172 | 
1173 | ![VS Code Jest Preview](https://cloud.githubusercontent.com/assets/49038/20795349/a032308a-b7c8-11e6-9b34-7eeac781003f.png)
1174 | 
1175 | ## Developing Components in Isolation
1176 | 
1177 | Usually, in an app, you have a lot of UI components, and each of them has many different states.
1178 | For an example, a simple button component could have following states:
1179 | 
1180 | * With a text label.
1181 | * With an emoji.
1182 | * In the disabled mode.
1183 | 
1184 | Usually, it’s hard to see these states without running a sample app or some examples.
1185 | 
1186 | Create React App doesn't include any tools for this by default, but you can easily add [React Storybook](https://github.com/kadirahq/react-storybook) to your project. **It is a third-party tool that lets you develop components and see all their states in isolation from your app**.
1187 | 
1188 | ![React Storybook Demo](http://i.imgur.com/7CIAWpB.gif)
1189 | 
1190 | You can also deploy your Storybook as a static app. This way, everyone in your team can view and review different states of UI components without starting a backend server or creating an account in your app.
1191 | 
1192 | **Here’s how to setup your app with Storybook:**
1193 | 
1194 | First, install the following npm package globally:
1195 | 
1196 | ```sh
1197 | npm install -g getstorybook
1198 | ```
1199 | 
1200 | Then, run the following command inside your app’s directory:
1201 | 
1202 | ```sh
1203 | getstorybook
1204 | ```
1205 | 
1206 | After that, follow the instructions on the screen.
1207 | 
1208 | Learn more about React Storybook:
1209 | 
1210 | * Screencast: [Getting Started with React Storybook](https://egghead.io/lessons/react-getting-started-with-react-storybook)
1211 | * [GitHub Repo](https://github.com/kadirahq/react-storybook)
1212 | * [Documentation](https://getstorybook.io/docs)
1213 | * [Snapshot Testing](https://github.com/kadirahq/storyshots) with React Storybook
1214 | 
1215 | ## Making a Progressive Web App
1216 | 
1217 | You can turn your React app into a [Progressive Web App](https://developers.google.com/web/progressive-web-apps/) by following the steps in [this repository](https://github.com/jeffposnick/create-react-pwa).
1218 | 
1219 | ## Deployment
1220 | 
1221 | `npm run build` creates a `build` directory with a production build of your app. Set up your favourite HTTP server so that a visitor to your site is served `index.html`, and requests to static paths like `/static/js/main.<hash>.js` are served with the contents of the `/static/js/main.<hash>.js` file. For example, Python contains a built-in HTTP server that can serve static files:
1222 | 
1223 | ```sh
1224 | cd build
1225 | python -m SimpleHTTPServer 9000
1226 | ```
1227 | 
1228 | If you're using [Node](https://nodejs.org/) and [Express](http://expressjs.com/) as a server, it might look like this:
1229 | 
1230 | ```javascript
1231 | const express = require('express');
1232 | const path = require('path');
1233 | const app = express();
1234 | 
1235 | app.use(express.static('./build'));
1236 | 
1237 | app.get('/', function (req, res) {
1238 |   res.sendFile(path.join(__dirname, './build', 'index.html'));
1239 | });
1240 | 
1241 | app.listen(9000);
1242 | ```
1243 | 
1244 | Create React App is not opinionated about your choice of web server. Any static file server will do. The `build` folder with static assets is the only output produced by Create React App.
1245 | 
1246 | However this is not quite enough if you use client-side routing. Read the next section if you want to support URLs like `/todos/42` in your single-page app.
1247 | 
1248 | ### Serving Apps with Client-Side Routing
1249 | 
1250 | If you use routers that use the HTML5 [`pushState` history API](https://developer.mozilla.org/en-US/docs/Web/API/History_API#Adding_and_modifying_history_entries) under the hood (for example, [React Router](https://github.com/ReactTraining/react-router) with `browserHistory`), many static file servers will fail. For example, if you used React Router with a route for `/todos/42`, the development server will respond to `localhost:3000/todos/42` properly, but an Express serving a production build as above will not.
1251 | 
1252 | This is because when there is a fresh page load for a `/todos/42`, the server looks for the file `build/todos/42` and does not find it. The server needs to be configured to respond to a request to `/todos/42` by serving `index.html`. For example, we can amend our Express example above to serve `index.html` for any unknown paths:
1253 | 
1254 | ```diff
1255 |  app.use(express.static('./build'));
1256 | 
1257 | -app.get('/', function (req, res) {
1258 | +app.get('/*', function (req, res) {
1259 |    res.sendFile(path.join(__dirname, './build', 'index.html'));
1260 |  });
1261 | ```
1262 | 
1263 | Now requests to `/todos/42` will be handled correctly both in development and in production.
1264 | 
1265 | ### Building for Relative Paths
1266 | 
1267 | By default, Create React App produces a build assuming your app is hosted at the server root.<br>
1268 | To override this, specify the `homepage` in your `package.json`, for example:
1269 | 
1270 | ```js
1271 |   "homepage": "http://mywebsite.com/relativepath",
1272 | ```
1273 | 
1274 | This will let Create React App correctly infer the root path to use in the generated HTML file.
1275 | 
1276 | 
1277 | ### Firebase
1278 | 
1279 | Install the Firebase CLI if you haven't already by running `npm install -g firebase-tools`. Sign up for a [Firebase account](https://console.firebase.google.com/) and create a new project. Run `firebase login` and login with your previous created Firebase account.
1280 | 
1281 | Then run the `firebase init` command from your project's root. You need to choose the **Hosting: Configure and deploy Firebase Hosting sites** and choose the Firebase project you created in the previous step. You will need to agree with `database.rules.json` being created, choose `build` as the public directory, and also agree to **Configure as a single-page app** by replying with `y`.
1282 | 
1283 | ```sh
1284 |     === Project Setup
1285 | 
1286 |     First, let's associate this project directory with a Firebase project.
1287 |     You can create multiple project aliases by running firebase use --add,
1288 |     but for now we'll just set up a default project.
1289 | 
1290 |     ? What Firebase project do you want to associate as default? Example app (example-app-fd690)
1291 | 
1292 |     === Database Setup
1293 | 
1294 |     Firebase Realtime Database Rules allow you to define how your data should be
1295 |     structured and when your data can be read from and written to.
1296 | 
1297 |     ? What file should be used for Database Rules? database.rules.json
1298 |     ✔  Database Rules for example-app-fd690 have been downloaded to database.rules.json.
1299 |     Future modifications to database.rules.json will update Database Rules when you run
1300 |     firebase deploy.
1301 | 
1302 |     === Hosting Setup
1303 | 
1304 |     Your public directory is the folder (relative to your project directory) that
1305 |     will contain Hosting assets to uploaded with firebase deploy. If you
1306 |     have a build process for your assets, use your build's output directory.
1307 | 
1308 |     ? What do you want to use as your public directory? build
1309 |     ? Configure as a single-page app (rewrite all urls to /index.html)? Yes
1310 |     ✔  Wrote build/index.html
1311 | 
1312 |     i  Writing configuration info to firebase.json...
1313 |     i  Writing project information to .firebaserc...
1314 | 
1315 |     ✔  Firebase initialization complete!
1316 | ```
1317 | 
1318 | Now, after you create a production build with `npm run build`, you can deploy it by running `firebase deploy`.
1319 | 
1320 | ```sh
1321 |     === Deploying to 'example-app-fd690'...
1322 | 
1323 |     i  deploying database, hosting
1324 |     ✔  database: rules ready to deploy.
1325 |     i  hosting: preparing build directory for upload...
1326 |     Uploading: [==============================          ] 75%✔  hosting: build folder uploaded successfully
1327 |     ✔  hosting: 8 files uploaded successfully
1328 |     i  starting release process (may take several minutes)...
1329 | 
1330 |     ✔  Deploy complete!
1331 | 
1332 |     Project Console: https://console.firebase.google.com/project/example-app-fd690/overview
1333 |     Hosting URL: https://example-app-fd690.firebaseapp.com
1334 | ```
1335 | 
1336 | For more information see [Add Firebase to your JavaScript Project](https://firebase.google.com/docs/web/setup).
1337 | 
1338 | ### GitHub Pages
1339 | 
1340 | >Note: this feature is available with `react-scripts@0.2.0` and higher.
1341 | 
1342 | #### Step 1: Add `homepage` to `package.json`
1343 | 
1344 | **The step below is important!**<br>
1345 | **If you skip it, your app will not deploy correctly.**
1346 | 
1347 | Open your `package.json` and add a `homepage` field:
1348 | 
1349 | ```js
1350 |   "homepage": "https://myusername.github.io/my-app",
1351 | ```
1352 | 
1353 | Create React App uses the `homepage` field to determine the root URL in the built HTML file.
1354 | 
1355 | #### Step 2: Install `gh-pages` and add `deploy` to `scripts` in `package.json`
1356 | 
1357 | Now, whenever you run `npm run build`, you will see a cheat sheet with instructions on how to deploy to GitHub Pages.
1358 | 
1359 | To publish it at [https://myusername.github.io/my-app](https://myusername.github.io/my-app), run:
1360 | 
1361 | ```sh
1362 | npm install --save-dev gh-pages
1363 | ```
1364 | 
1365 | Add the following script in your `package.json`:
1366 | 
1367 | ```js
1368 |   // ...
1369 |   "scripts": {
1370 |     // ...
1371 |     "deploy": "npm run build&&gh-pages -d build"
1372 |   }
1373 | ```
1374 | 
1375 | (Note: the lack of whitespace is intentional.)
1376 | 
1377 | #### Step 3: Deploy the site by running `npm run deploy`
1378 | 
1379 | Then run:
1380 | 
1381 | ```sh
1382 | npm run deploy
1383 | ```
1384 | 
1385 | #### Step 4: Ensure your project's settings use `gh-pages`
1386 | 
1387 | Finally, make sure **GitHub Pages** option in your GitHub project settings is set to use the `gh-pages` branch:
1388 | 
1389 | <img src="http://i.imgur.com/HUjEr9l.png" width="500" alt="gh-pages branch setting">
1390 | 
1391 | #### Step 5: Optionally, configure the domain
1392 | 
1393 | You can configure a custom domain with GitHub Pages by adding a `CNAME` file to the `public/` folder.
1394 | 
1395 | #### Notes on client-side routing
1396 | 
1397 | GitHub Pages doesn't support routers that use the HTML5 `pushState` history API under the hood (for example, React Router using `browserHistory`). This is because when there is a fresh page load for a url like `http://user.github.io/todomvc/todos/42`, where `/todos/42` is a frontend route, the GitHub Pages server returns 404 because it knows nothing of `/todos/42`. If you want to add a router to a project hosted on GitHub Pages, here are a couple of solutions:
1398 | 
1399 | * You could switch from using HTML5 history API to routing with hashes. If you use React Router, you can switch to `hashHistory` for this effect, but the URL will be longer and more verbose (for example, `http://user.github.io/todomvc/#/todos/42?_k=yknaj`). [Read more](https://github.com/reactjs/react-router/blob/master/docs/guides/Histories.md#histories) about different history implementations in React Router.
1400 | * Alternatively, you can use a trick to teach GitHub Pages to handle 404 by redirecting to your `index.html` page with a special redirect parameter. You would need to add a `404.html` file with the redirection code to the `build` folder before deploying your project, and you’ll need to add code handling the redirect parameter to `index.html`. You can find a detailed explanation of this technique [in this guide](https://github.com/rafrex/spa-github-pages).
1401 | 
1402 | ### Heroku
1403 | 
1404 | Use the [Heroku Buildpack for Create React App](https://github.com/mars/create-react-app-buildpack).<br>
1405 | You can find instructions in [Deploying React with Zero Configuration](https://blog.heroku.com/deploying-react-with-zero-configuration).
1406 | 
1407 | ### Modulus
1408 | 
1409 | See the [Modulus blog post](http://blog.modulus.io/deploying-react-apps-on-modulus) on how to deploy your react app to Modulus.
1410 | 
1411 | ## Netlify
1412 | 
1413 | **To do a manual deploy to Netlify's CDN:**
1414 | 
1415 | ```sh
1416 | npm install netlify-cli
1417 | netlify deploy
1418 | ```
1419 | 
1420 | Choose `build` as the path to deploy.
1421 | 
1422 | **To setup continuous delivery:**
1423 | 
1424 | With this setup Netlify will build and deploy when you push to git or open a pull request:
1425 | 
1426 | 1. [Start a new netlify project](https://app.netlify.com/signup)
1427 | 2. Pick your Git hosting service and select your repository
1428 | 3. Click `Build your site`
1429 | 
1430 | **Support for client-side routing:**
1431 | 
1432 | To support `pushState`, make sure to create a `public/_redirects` file with the following rewrite rules:
1433 | 
1434 | ```
1435 | /*  /index.html  200
1436 | ```
1437 | 
1438 | When you build the project, Create React App will place the `public` folder contents into the build output.
1439 | 
1440 | ### Now
1441 | 
1442 | See [this example](https://github.com/xkawi/create-react-app-now) for a zero-configuration single-command deployment with [now](https://zeit.co/now).
1443 | 
1444 | ### S3 and CloudFront
1445 | 
1446 | See this [blog post](https://medium.com/@omgwtfmarc/deploying-create-react-app-to-s3-or-cloudfront-48dae4ce0af) on how to deploy your React app to Amazon Web Services [S3](https://aws.amazon.com/s3) and [CloudFront](https://aws.amazon.com/cloudfront/).
1447 | 
1448 | ### Surge
1449 | 
1450 | Install the Surge CLI if you haven't already by running `npm install -g surge`. Run the `surge` command and log in you or create a new account. You just need to specify the *build* folder and your custom domain, and you are done.
1451 | 
1452 | ```sh
1453 |               email: email@domain.com
1454 |            password: ********
1455 |        project path: /path/to/project/build
1456 |                size: 7 files, 1.8 MB
1457 |              domain: create-react-app.surge.sh
1458 |              upload: [====================] 100%, eta: 0.0s
1459 |    propagate on CDN: [====================] 100%
1460 |                plan: Free
1461 |               users: email@domain.com
1462 |          IP Address: X.X.X.X
1463 | 
1464 |     Success! Project is published and running at create-react-app.surge.sh
1465 | ```
1466 | 
1467 | Note that in order to support routers that use HTML5 `pushState` API, you may want to rename the `index.html` in your build folder to `200.html` before deploying to Surge. This [ensures that every URL falls back to that file](https://surge.sh/help/adding-a-200-page-for-client-side-routing).
1468 | 
1469 | ## Troubleshooting
1470 | 
1471 | ### `npm test` hangs on macOS Sierra
1472 | 
1473 | If you run `npm test` and the console gets stuck after printing `react-scripts test --env=jsdom` to the console there might be a problem with your [Watchman](https://facebook.github.io/watchman/) installation as described in [facebookincubator/create-react-app#713](https://github.com/facebookincubator/create-react-app/issues/713).
1474 | 
1475 | We recommend deleting `node_modules` in your project and running `npm install` (or `yarn` if you use it) first. If it doesn't help, you can try one of the numerous workarounds mentioned in these issues:
1476 | 
1477 | * [facebook/jest#1767](https://github.com/facebook/jest/issues/1767)
1478 | * [facebook/watchman#358](https://github.com/facebook/watchman/issues/358)
1479 | * [ember-cli/ember-cli#6259](https://github.com/ember-cli/ember-cli/issues/6259)
1480 | 
1481 | It is reported that installing Watchman 4.7.0 or newer fixes the issue. If you use [Homebrew](http://brew.sh/), you can run these commands to update it:
1482 | 
1483 | ```
1484 | watchman shutdown-server
1485 | brew update
1486 | brew reinstall watchman
1487 | ```
1488 | 
1489 | You can find [other installation methods](https://facebook.github.io/watchman/docs/install.html#build-install) on the Watchman documentation page.
1490 | 
1491 | If this still doesn't help, try running `launchctl unload -F ~/Library/LaunchAgents/com.github.facebook.watchman.plist`.
1492 | 
1493 | There are also reports that *uninstalling* Watchman fixes the issue. So if nothing else helps, remove it from your system and try again.
1494 | 
1495 | ### `npm run build` silently fails
1496 | 
1497 | It is reported that `npm run build` can fail on machines with no swap space, which is common in cloud environments. If [the symptoms are matching](https://github.com/facebookincubator/create-react-app/issues/1133#issuecomment-264612171), consider adding some swap space to the machine you’re building on, or build the project locally.
1498 | 
1499 | ## Something Missing?
1500 | 
1501 | If you have ideas for more “How To” recipes that should be on this page, [let us know](https://github.com/facebookincubator/create-react-app/issues) or [contribute some!](https://github.com/facebookincubator/create-react-app/edit/master/packages/react-scripts/template/README.md)
1502 | 


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/config/.eslintrc:
--------------------------------------------------------------------------------
1 | {
2 |   "extends": "react-app",
3 | }
4 | 


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/config/env.js:
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 1 | // Grab NODE_ENV and REACT_APP_* environment variables and prepare them to be
 2 | // injected into the application via DefinePlugin in Webpack configuration.
 3 | 
 4 | var REACT_APP = /^REACT_APP_/i;
 5 | 
 6 | function getClientEnvironment(publicUrl) {
 7 |   var processEnv = Object
 8 |     .keys(process.env)
 9 |     .filter(key => REACT_APP.test(key))
10 |     .reduce((env, key) => {
11 |       env[key] = JSON.stringify(process.env[key]);
12 |       return env;
13 |     }, {
14 |       // Useful for determining whether we’re running in production mode.
15 |       // Most importantly, it switches React into the correct mode.
16 |       'NODE_ENV': JSON.stringify(
17 |         process.env.NODE_ENV || 'development'
18 |       ),
19 |       // Useful for resolving the correct path to static assets in `public`.
20 |       // For example, <img src={process.env.PUBLIC_URL + '/img/logo.png'} />.
21 |       // This should only be used as an escape hatch. Normally you would put
22 |       // images into the `src` and `import` them in code to get their paths.
23 |       'PUBLIC_URL': JSON.stringify(publicUrl)
24 |     });
25 |   return {'process.env': processEnv};
26 | }
27 | 
28 | module.exports = getClientEnvironment;
29 | 


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


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


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/config/paths.js:
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 1 | var path = require('path');
 2 | var fs = require('fs');
 3 | 
 4 | // Make sure any symlinks in the project folder are resolved:
 5 | // https://github.com/facebookincubator/create-react-app/issues/637
 6 | var appDirectory = fs.realpathSync(process.cwd());
 7 | function resolveApp(relativePath) {
 8 |   return path.resolve(appDirectory, relativePath);
 9 | }
10 | 
11 | // We support resolving modules according to `NODE_PATH`.
12 | // This lets you use absolute paths in imports inside large monorepos:
13 | // https://github.com/facebookincubator/create-react-app/issues/253.
14 | 
15 | // It works similar to `NODE_PATH` in Node itself:
16 | // https://nodejs.org/api/modules.html#modules_loading_from_the_global_folders
17 | 
18 | // We will export `nodePaths` as an array of absolute paths.
19 | // It will then be used by Webpack configs.
20 | // Jest doesn’t need this because it already handles `NODE_PATH` out of the box.
21 | 
22 | // Note that unlike in Node, only *relative* paths from `NODE_PATH` are honored.
23 | // Otherwise, we risk importing Node.js core modules into an app instead of Webpack shims.
24 | // https://github.com/facebookincubator/create-react-app/issues/1023#issuecomment-265344421
25 | 
26 | var nodePaths = (process.env.NODE_PATH || '')
27 |   .split(process.platform === 'win32' ? ';' : ':')
28 |   .filter(Boolean)
29 |   .filter(folder => !path.isAbsolute(folder))
30 |   .map(resolveApp);
31 | 
32 | // config after eject: we're in ./config/
33 | module.exports = {
34 |   appBuild: resolveApp('build'),
35 |   appPublic: resolveApp('public'),
36 |   appHtml: resolveApp('public/index.html'),
37 |   appIndexJs: resolveApp('src/index.js'),
38 |   appPackageJson: resolveApp('package.json'),
39 |   appSrc: resolveApp('src'),
40 |   yarnLockFile: resolveApp('yarn.lock'),
41 |   testsSetup: resolveApp('src/setupTests.js'),
42 |   appNodeModules: resolveApp('node_modules'),
43 |   ownNodeModules: resolveApp('node_modules'),
44 |   nodePaths: nodePaths
45 | };
46 | 


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


--------------------------------------------------------------------------------
/config/webpack.config.dev.js:
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  1 | var autoprefixer = require('autoprefixer');
  2 | var webpack = require('webpack');
  3 | var HtmlWebpackPlugin = require('html-webpack-plugin');
  4 | var CaseSensitivePathsPlugin = require('case-sensitive-paths-webpack-plugin');
  5 | var InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
  6 | var WatchMissingNodeModulesPlugin = require('react-dev-utils/WatchMissingNodeModulesPlugin');
  7 | var getClientEnvironment = require('./env');
  8 | var paths = require('./paths');
  9 | 
 10 | 
 11 | 
 12 | // Webpack uses `publicPath` to determine where the app is being served from.
 13 | // In development, we always serve from the root. This makes config easier.
 14 | var publicPath = '/';
 15 | // `publicUrl` is just like `publicPath`, but we will provide it to our app
 16 | // as %PUBLIC_URL% in `index.html` and `process.env.PUBLIC_URL` in JavaScript.
 17 | // Omit trailing slash as %PUBLIC_PATH%/xyz looks better than %PUBLIC_PATH%xyz.
 18 | var publicUrl = '';
 19 | // Get environment variables to inject into our app.
 20 | var env = getClientEnvironment(publicUrl);
 21 | 
 22 | var provided = {
 23 |   'Web3': 'web3'
 24 | }
 25 | 
 26 | // This is the development configuration.
 27 | // It is focused on developer experience and fast rebuilds.
 28 | // The production configuration is different and lives in a separate file.
 29 | module.exports = {
 30 |   // You may want 'eval' instead if you prefer to see the compiled output in DevTools.
 31 |   // See the discussion in https://github.com/facebookincubator/create-react-app/issues/343.
 32 |   devtool: 'cheap-module-source-map',
 33 |   // These are the "entry points" to our application.
 34 |   // This means they will be the "root" imports that are included in JS bundle.
 35 |   // The first two entry points enable "hot" CSS and auto-refreshes for JS.
 36 |   entry: [
 37 |     // Include an alternative client for WebpackDevServer. A client's job is to
 38 |     // connect to WebpackDevServer by a socket and get notified about changes.
 39 |     // When you save a file, the client will either apply hot updates (in case
 40 |     // of CSS changes), or refresh the page (in case of JS changes). When you
 41 |     // make a syntax error, this client will display a syntax error overlay.
 42 |     // Note: instead of the default WebpackDevServer client, we use a custom one
 43 |     // to bring better experience for Create React App users. You can replace
 44 |     // the line below with these two lines if you prefer the stock client:
 45 |     // require.resolve('webpack-dev-server/client') + '?/',
 46 |     // require.resolve('webpack/hot/dev-server'),
 47 |     require.resolve('react-dev-utils/webpackHotDevClient'),
 48 |     // We ship a few polyfills by default:
 49 |     //require.resolve('./polyfills'),
 50 |     // Set up an ES6-ish environment
 51 |     'babel-polyfill',
 52 |     // Finally, this is your app's code:
 53 |     paths.appIndexJs
 54 |     // We include the app code last so that if there is a runtime error during
 55 |     // initialization, it doesn't blow up the WebpackDevServer client, and
 56 |     // changing JS code would still trigger a refresh.
 57 |   ],
 58 |   output: {
 59 |     // Next line is not used in dev but WebpackDevServer crashes without it:
 60 |     path: paths.appBuild,
 61 |     // Add /* filename */ comments to generated require()s in the output.
 62 |     pathinfo: true,
 63 |     // This does not produce a real file. It's just the virtual path that is
 64 |     // served by WebpackDevServer in development. This is the JS bundle
 65 |     // containing code from all our entry points, and the Webpack runtime.
 66 |     filename: 'static/js/bundle.js',
 67 |     // This is the URL that app is served from. We use "/" in development.
 68 |     publicPath: publicPath
 69 |   },
 70 |   resolve: {
 71 |     // This allows you to set a fallback for where Webpack should look for modules.
 72 |     // We read `NODE_PATH` environment variable in `paths.js` and pass paths here.
 73 |     // We use `fallback` instead of `root` because we want `node_modules` to "win"
 74 |     // if there any conflicts. This matches Node resolution mechanism.
 75 |     // https://github.com/facebookincubator/create-react-app/issues/253
 76 |     fallback: paths.nodePaths,
 77 |     // These are the reasonable defaults supported by the Node ecosystem.
 78 |     // We also include JSX as a common component filename extension to support
 79 |     // some tools, although we do not recommend using it, see:
 80 |     // https://github.com/facebookincubator/create-react-app/issues/290
 81 |     extensions: ['.js', '.json', '.jsx', ''],
 82 |     alias: {
 83 |       // Support React Native Web
 84 |       // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
 85 |       'react-native': 'react-native-web'
 86 |     }
 87 |   },
 88 | 
 89 |   module: {
 90 |     // First, run the linter.
 91 |     // It's important to do this before Babel processes the JS.
 92 |     preLoaders: [
 93 |       {
 94 |         test: /\.(js|jsx)$/,
 95 |         loader: 'eslint',
 96 |         include: paths.appSrc,
 97 |       }
 98 |     ],
 99 |     loaders: [
100 |       // Default loader: load all assets that are not handled
101 |       // by other loaders with the url loader.
102 |       // Note: This list needs to be updated with every change of extensions
103 |       // the other loaders match.
104 |       // E.g., when adding a loader for a new supported file extension,
105 |       // we need to add the supported extension to this loader too.
106 |       // Add one new line in `exclude` for each loader.
107 |       //
108 |       // "file" loader makes sure those assets get served by WebpackDevServer.
109 |       // When you `import` an asset, you get its (virtual) filename.
110 |       // In production, they would get copied to the `build` folder.
111 |       // "url" loader works like "file" loader except that it embeds assets
112 |       // smaller than specified limit in bytes as data URLs to avoid requests.
113 |       // A missing `test` is equivalent to a match.
114 |       {
115 |         exclude: [
116 |           /\.html$/,
117 |           /\.(js|jsx)$/,
118 |           /\.css$/,
119 |           /\.json$/,
120 |           /\.svg$/
121 |         ],
122 |         loader: 'url',
123 |         query: {
124 |           limit: 10000,
125 |           name: 'static/media/[name].[hash:8].[ext]'
126 |         }
127 |       },
128 |       // Process JS with Babel.
129 |       {
130 |         loader: 'babel-loader',
131 |         test: /\.(js|jsx)$/,
132 |         include: paths.appSrc,
133 |         query: {
134 |           plugins: ['transform-runtime'],
135 |           presets: ['es2015', 'stage-0', 'react'],
136 |           // This is a feature of `babel-loader` for webpack (not Babel itself).
137 |           // It enables caching results in ./node_modules/.cache/babel-loader/
138 |           // directory for faster rebuilds.
139 |           //cacheDirectory: true
140 |         }
141 |       },
142 |       // "postcss" loader applies autoprefixer to our CSS.
143 |       // "css" loader resolves paths in CSS and adds assets as dependencies.
144 |       // "style" loader turns CSS into JS modules that inject <style> tags.
145 |       // In production, we use a plugin to extract that CSS to a file, but
146 |       // in development "style" loader enables hot editing of CSS.
147 |       {
148 |         test: /\.css$/,
149 |         loader: 'style!css?importLoaders=1!postcss'
150 |       },
151 |       // JSON is not enabled by default in Webpack but both Node and Browserify
152 |       // allow it implicitly so we also enable it.
153 |       {
154 |         test: /\.json$/,
155 |         loader: 'json'
156 |       },
157 |       // "file" loader for svg
158 |       {
159 |         test: /\.svg$/,
160 |         loader: 'file',
161 |         query: {
162 |           name: 'static/media/[name].[hash:8].[ext]'
163 |         }
164 |       }
165 |     ]
166 |   },
167 | 
168 |   // We use PostCSS for autoprefixing only.
169 |   postcss: function() {
170 |     return [
171 |       autoprefixer({
172 |         browsers: [
173 |           '>1%',
174 |           'last 4 versions',
175 |           'Firefox ESR',
176 |           'not ie < 9', // React doesn't support IE8 anyway
177 |         ]
178 |       }),
179 |     ];
180 |   },
181 |   plugins: [
182 |     // Makes the public URL available as %PUBLIC_URL% in index.html, e.g.:
183 |     // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
184 |     // In development, this will be an empty string.
185 |     new InterpolateHtmlPlugin({
186 |       PUBLIC_URL: publicUrl
187 |     }),
188 |     // Generates an `index.html` file with the <script> injected.
189 |     new HtmlWebpackPlugin({
190 |       inject: true,
191 |       template: paths.appHtml,
192 |     }),
193 |     // Makes some environment variables available to the JS code, for example:
194 |     // if (process.env.NODE_ENV === 'development') { ... }. See `./env.js`.
195 |     new webpack.DefinePlugin(env),
196 |     // use web3 as provided
197 |     new webpack.ProvidePlugin(provided),
198 |     // This is necessary to emit hot updates (currently CSS only):
199 |     new webpack.HotModuleReplacementPlugin(),
200 |     // Watcher doesn't work well if you mistype casing in a path so we use
201 |     // a plugin that prints an error when you attempt to do this.
202 |     // See https://github.com/facebookincubator/create-react-app/issues/240
203 |     new CaseSensitivePathsPlugin(),
204 |     // If you require a missing module and then `npm install` it, you still have
205 |     // to restart the development server for Webpack to discover it. This plugin
206 |     // makes the discovery automatic so you don't have to restart.
207 |     // See https://github.com/facebookincubator/create-react-app/issues/186
208 |     new WatchMissingNodeModulesPlugin(paths.appNodeModules)
209 |   ],
210 |   // Some libraries import Node modules but don't use them in the browser.
211 |   // Tell Webpack to provide empty mocks for them so importing them works.
212 |   node: {
213 |     fs: 'empty',
214 |     net: 'empty',
215 |     tls: 'empty'
216 |   }
217 | };
218 | 


--------------------------------------------------------------------------------
/config/webpack.config.prod.js:
--------------------------------------------------------------------------------
  1 | var autoprefixer = require('autoprefixer');
  2 | var webpack = require('webpack');
  3 | var HtmlWebpackPlugin = require('html-webpack-plugin');
  4 | var ExtractTextPlugin = require('extract-text-webpack-plugin');
  5 | var ManifestPlugin = require('webpack-manifest-plugin');
  6 | var InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
  7 | var url = require('url');
  8 | var paths = require('./paths');
  9 | var getClientEnvironment = require('./env');
 10 | 
 11 | 
 12 | 
 13 | function ensureSlash(path, needsSlash) {
 14 |   var hasSlash = path.endsWith('/');
 15 |   if (hasSlash && !needsSlash) {
 16 |     return path.substr(path, path.length - 1);
 17 |   } else if (!hasSlash && needsSlash) {
 18 |     return path + '/';
 19 |   } else {
 20 |     return path;
 21 |   }
 22 | }
 23 | 
 24 | // We use "homepage" field to infer "public path" at which the app is served.
 25 | // Webpack needs to know it to put the right <script> hrefs into HTML even in
 26 | // single-page apps that may serve index.html for nested URLs like /todos/42.
 27 | // We can't use a relative path in HTML because we don't want to load something
 28 | // like /todos/42/static/js/bundle.7289d.js. We have to know the root.
 29 | var homepagePath = require(paths.appPackageJson).homepage;
 30 | var homepagePathname = homepagePath ? url.parse(homepagePath).pathname : '/';
 31 | // Webpack uses `publicPath` to determine where the app is being served from.
 32 | // It requires a trailing slash, or the file assets will get an incorrect path.
 33 | var publicPath = ensureSlash(homepagePathname, true);
 34 | // `publicUrl` is just like `publicPath`, but we will provide it to our app
 35 | // as %PUBLIC_URL% in `index.html` and `process.env.PUBLIC_URL` in JavaScript.
 36 | // Omit trailing slash as %PUBLIC_PATH%/xyz looks better than %PUBLIC_PATH%xyz.
 37 | var publicUrl = ensureSlash(homepagePathname, false);
 38 | // Get environment variables to inject into our app.
 39 | var env = getClientEnvironment(publicUrl);
 40 | 
 41 | // Assert this just to be safe.
 42 | // Development builds of React are slow and not intended for production.
 43 | if (env['process.env'].NODE_ENV !== '"production"') {
 44 |   throw new Error('Production builds must have NODE_ENV=production.');
 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: [
 58 |     require.resolve('./polyfills'),
 59 |     paths.appIndexJs
 60 |   ],
 61 |   output: {
 62 |     // The build folder.
 63 |     path: paths.appBuild,
 64 |     // Generated JS file names (with nested folders).
 65 |     // There will be one main bundle, and one file per asynchronous chunk.
 66 |     // We don't currently advertise code splitting but Webpack supports it.
 67 |     filename: 'static/js/[name].[chunkhash:8].js',
 68 |     chunkFilename: 'static/js/[name].[chunkhash:8].chunk.js',
 69 |     // We inferred the "public path" (such as / or /my-project) from homepage.
 70 |     publicPath: publicPath
 71 |   },
 72 |   resolve: {
 73 |     // This allows you to set a fallback for where Webpack should look for modules.
 74 |     // We read `NODE_PATH` environment variable in `paths.js` and pass paths here.
 75 |     // We use `fallback` instead of `root` because we want `node_modules` to "win"
 76 |     // if there any conflicts. This matches Node resolution mechanism.
 77 |     // https://github.com/facebookincubator/create-react-app/issues/253
 78 |     fallback: paths.nodePaths,
 79 |     // These are the reasonable defaults supported by the Node ecosystem.
 80 |     // We also include JSX as a common component filename extension to support
 81 |     // some tools, although we do not recommend using it, see:
 82 |     // https://github.com/facebookincubator/create-react-app/issues/290
 83 |     extensions: ['.js', '.json', '.jsx', ''],
 84 |     alias: {
 85 |       // Support React Native Web
 86 |       // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
 87 |       'react-native': 'react-native-web'
 88 |     }
 89 |   },
 90 | 
 91 |   module: {
 92 |     // First, run the linter.
 93 |     // It's important to do this before Babel processes the JS.
 94 |     preLoaders: [
 95 |       {
 96 |         test: /\.(js|jsx)$/,
 97 |         loader: 'eslint',
 98 |         include: paths.appSrc
 99 |       }
100 |     ],
101 |     loaders: [
102 |       // Default loader: load all assets that are not handled
103 |       // by other loaders with the url loader.
104 |       // Note: This list needs to be updated with every change of extensions
105 |       // the other loaders match.
106 |       // E.g., when adding a loader for a new supported file extension,
107 |       // we need to add the supported extension to this loader too.
108 |       // Add one new line in `exclude` for each loader.
109 |       //
110 |       // "file" loader makes sure those assets end up in the `build` folder.
111 |       // When you `import` an asset, you get its filename.
112 |       // "url" loader works just like "file" loader but it also embeds
113 |       // assets smaller than specified size as data URLs to avoid requests.
114 |       {
115 |         exclude: [
116 |           /\.html$/,
117 |           /\.(js|jsx)$/,
118 |           /\.css$/,
119 |           /\.json$/,
120 |           /\.svg$/
121 |         ],
122 |         loader: 'url',
123 |         query: {
124 |           limit: 10000,
125 |           name: 'static/media/[name].[hash:8].[ext]'
126 |         }
127 |       },
128 |       // Process JS with Babel.
129 |       {
130 |         test: /\.(js|jsx)$/,
131 |         include: paths.appSrc,
132 |         loader: 'babel',
133 | 
134 |       },
135 |       // The notation here is somewhat confusing.
136 |       // "postcss" loader applies autoprefixer to our CSS.
137 |       // "css" loader resolves paths in CSS and adds assets as dependencies.
138 |       // "style" loader normally turns CSS into JS modules injecting <style>,
139 |       // but unlike in development configuration, we do something different.
140 |       // `ExtractTextPlugin` first applies the "postcss" and "css" loaders
141 |       // (second argument), then grabs the result CSS and puts it into a
142 |       // separate file in our build process. This way we actually ship
143 |       // a single CSS file in production instead of JS code injecting <style>
144 |       // tags. If you use code splitting, however, any async bundles will still
145 |       // use the "style" loader inside the async code so CSS from them won't be
146 |       // in the main CSS file.
147 |       {
148 |         test: /\.css$/,
149 |         loader: ExtractTextPlugin.extract('style', 'css?importLoaders=1!postcss')
150 |         // Note: this won't work without `new ExtractTextPlugin()` in `plugins`.
151 |       },
152 |       // JSON is not enabled by default in Webpack but both Node and Browserify
153 |       // allow it implicitly so we also enable it.
154 |       {
155 |         test: /\.json$/,
156 |         loader: 'json'
157 |       },
158 |       // "file" loader for svg
159 |       {
160 |         test: /\.svg$/,
161 |         loader: 'file',
162 |         query: {
163 |           name: 'static/media/[name].[hash:8].[ext]'
164 |         }
165 |       },
166 |       {
167 |         test: /\.sol/, loader: 'truffle-solidity'
168 |       }
169 |     ]
170 |   },
171 | 
172 |   // We use PostCSS for autoprefixing only.
173 |   postcss: function() {
174 |     return [
175 |       autoprefixer({
176 |         browsers: [
177 |           '>1%',
178 |           'last 4 versions',
179 |           'Firefox ESR',
180 |           'not ie < 9', // React doesn't support IE8 anyway
181 |         ]
182 |       }),
183 |     ];
184 |   },
185 |   plugins: [
186 |     // Makes the public URL available as %PUBLIC_URL% in index.html, e.g.:
187 |     // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
188 |     // In production, it will be an empty string unless you specify "homepage"
189 |     // in `package.json`, in which case it will be the pathname of that URL.
190 |     new InterpolateHtmlPlugin({
191 |       PUBLIC_URL: publicUrl
192 |     }),
193 |     // Generates an `index.html` file with the <script> injected.
194 |     new HtmlWebpackPlugin({
195 |       inject: true,
196 |       template: paths.appHtml,
197 |       minify: {
198 |         removeComments: true,
199 |         collapseWhitespace: true,
200 |         removeRedundantAttributes: true,
201 |         useShortDoctype: true,
202 |         removeEmptyAttributes: true,
203 |         removeStyleLinkTypeAttributes: true,
204 |         keepClosingSlash: true,
205 |         minifyJS: true,
206 |         minifyCSS: true,
207 |         minifyURLs: true
208 |       }
209 |     }),
210 |     // Makes some environment variables available to the JS code, for example:
211 |     // if (process.env.NODE_ENV === 'production') { ... }. See `./env.js`.
212 |     // It is absolutely essential that NODE_ENV was set to production here.
213 |     // Otherwise React will be compiled in the very slow development mode.
214 |     new webpack.DefinePlugin(env),
215 |     // This helps ensure the builds are consistent if source hasn't changed:
216 |     new webpack.optimize.OccurrenceOrderPlugin(),
217 |     // Try to dedupe duplicated modules, if any:
218 |     new webpack.optimize.DedupePlugin(),
219 |     // Minify the code.
220 |     new webpack.optimize.UglifyJsPlugin({
221 |       compress: {
222 |         screw_ie8: true, // React doesn't support IE8
223 |         warnings: false
224 |       },
225 |       mangle: {
226 |         screw_ie8: true
227 |       },
228 |       output: {
229 |         comments: false,
230 |         screw_ie8: true
231 |       }
232 |     }),
233 |     // Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
234 |     new ExtractTextPlugin('static/css/[name].[contenthash:8].css'),
235 |     // Generate a manifest file which contains a mapping of all asset filenames
236 |     // to their corresponding output file so that tools can pick it up without
237 |     // having to parse `index.html`.
238 |     new ManifestPlugin({
239 |       fileName: 'asset-manifest.json'
240 |     })
241 |   ],
242 |   // Some libraries import Node modules but don't use them in the browser.
243 |   // Tell Webpack to provide empty mocks for them so importing them works.
244 |   node: {
245 |     fs: 'empty',
246 |     net: 'empty',
247 |     tls: 'empty'
248 |   }
249 | };
250 | 


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/contracts/ConvertLib.sol:
--------------------------------------------------------------------------------
1 | pragma solidity ^0.4.2;
2 | 
3 | library ConvertLib{
4 | 	function convert(uint amount,uint conversionRate) returns (uint convertedAmount)
5 | 	{
6 | 		return amount * conversionRate;
7 | 	}
8 | }
9 | 


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/contracts/MetaCoin.sol:
--------------------------------------------------------------------------------
 1 | pragma solidity ^0.4.2;
 2 | 
 3 | import "./ConvertLib.sol";
 4 | 
 5 | // This is just a simple example of a coin-like contract.
 6 | // It is not standards compatible and cannot be expected to talk to other
 7 | // coin/token contracts. If you want to create a standards-compliant
 8 | // token, see: https://github.com/ConsenSys/Tokens. Cheers!
 9 | 
10 | contract MetaCoin {
11 | 	mapping (address => uint) balances;
12 | 
13 | 	event Transfer(address indexed _from, address indexed _to, uint256 _value);
14 | 
15 | 	function MetaCoin() {
16 | 		balances[tx.origin] = 10000;
17 | 	}
18 | 
19 | 	function sendCoin(address receiver, uint amount) returns(bool sufficient) {
20 | 		if (balances[msg.sender] < amount) return false;
21 | 		balances[msg.sender] -= amount;
22 | 		balances[receiver] += amount;
23 | 		Transfer(msg.sender, receiver, amount);
24 | 		return true;
25 | 	}
26 | 
27 | 	function getBalanceInEth(address addr) returns(uint){
28 | 		return ConvertLib.convert(getBalance(addr),2);
29 | 	}
30 | 
31 | 	function getBalance(address addr) returns(uint) {
32 | 		return balances[addr];
33 | 	}
34 | }
35 | 


--------------------------------------------------------------------------------
/contracts/Migrations.sol:
--------------------------------------------------------------------------------
 1 | pragma solidity ^0.4.2;
 2 | 
 3 | contract Migrations {
 4 |   address public owner;
 5 |   uint public last_completed_migration;
 6 | 
 7 |   modifier restricted() {
 8 |     if (msg.sender == owner) _;
 9 |   }
10 | 
11 |   function Migrations() {
12 |     owner = msg.sender;
13 |   }
14 | 
15 |   function setCompleted(uint completed) restricted {
16 |     last_completed_migration = completed;
17 |   }
18 | 
19 |   function upgrade(address new_address) restricted {
20 |     Migrations upgraded = Migrations(new_address);
21 |     upgraded.setCompleted(last_completed_migration);
22 |   }
23 | }
24 | 


--------------------------------------------------------------------------------
/contracts/SimpleWallet.sol:
--------------------------------------------------------------------------------
 1 | pragma solidity ^0.4.4;
 2 | 
 3 | contract SimpleWallet {
 4 | 
 5 |   address owner;
 6 |   mapping(address => bool) isAllowedToSendFundsMapping;
 7 | 
 8 |   event Deposit(address _sender, uint amount);
 9 |   event Withdrawal(address _sender, uint amount, address _beneficiary);
10 | 
11 |   function SimpleWallet() {
12 |     owner = msg.sender;
13 |   }
14 | 
15 |   function() payable {
16 |     if (msg.sender == owner || isAllowedToSendFundsMapping[msg.sender] == true) {
17 |       Deposit(msg.sender, msg.value);
18 |     } else {
19 |       throw;
20 |     }
21 |   }
22 | 
23 |   function sendFunds(uint amount, address receiver) returns (uint) {
24 |     if (msg.sender == owner || isAllowedToSendFundsMapping[msg.sender]) {
25 |       if (this.balance >= amount) {
26 |         if (!receiver.send(amount)) {
27 |           throw;
28 |         }
29 |         Withdrawal(msg.sender, amount, receiver);
30 |         return this.balance;
31 |       }
32 |     }
33 |   }
34 | 
35 |   function allowAddressToSendMoney(address _address) {
36 |     if (msg.sender == owner) {
37 |       isAllowedToSendFundsMapping[_address] = true;
38 |     }
39 |   }
40 | 
41 |   function disallowAddressToSendMoney(address _address) {
42 |     if (msg.sender == owner) {
43 |       isAllowedToSendFundsMapping[_address] = false;
44 |     }
45 |   }
46 | 
47 |   function isAllowedToSend(address _address) constant returns (bool) {
48 |     return isAllowedToSendFundsMapping[_address] || _address == owner;
49 |   }
50 | 
51 |   function killWallet() {
52 |     if (msg.sender == owner) {
53 |       suicide(owner);
54 |     }
55 |   }
56 | }
57 | 


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/docs/img/dapp-dev-env.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/davidoevans/react-redux-dapp/0557e3b8193be15d40e439b32fd0c22d4bf7176d/docs/img/dapp-dev-env.png


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/docs/img/react-redux-dapp.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/davidoevans/react-redux-dapp/0557e3b8193be15d40e439b32fd0c22d4bf7176d/docs/img/react-redux-dapp.png


--------------------------------------------------------------------------------
/license.MD:
--------------------------------------------------------------------------------
 1 | MIT License
 2 | 
 3 | Copyright (c) 2017 David Evans
 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 | 


--------------------------------------------------------------------------------
/migrations/1_initial_migration.js:
--------------------------------------------------------------------------------
1 | var Migrations = artifacts.require("./Migrations.sol");
2 | 
3 | module.exports = function(deployer) {
4 |   deployer.deploy(Migrations);
5 | };
6 | 


--------------------------------------------------------------------------------
/migrations/2_deploy_contracts.js:
--------------------------------------------------------------------------------
1 | var ConvertLib = artifacts.require("./ConvertLib.sol");
2 | var MetaCoin = artifacts.require("./MetaCoin.sol");
3 | 
4 | module.exports = function(deployer) {
5 |   deployer.deploy(ConvertLib);
6 |   deployer.link(ConvertLib, MetaCoin);
7 |   deployer.deploy(MetaCoin);
8 | };
9 | 


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
  1 | {
  2 |   "name": "react-redux-dapp",
  3 |   "version": "0.1.0",
  4 |   "private": true,
  5 |   "devDependencies": {
  6 |     "autoprefixer": "6.5.1",
  7 |     "babel-core": "^6.22.1",
  8 |     "babel-loader": "^6.2.10",
  9 |     "babel-plugin-transform-runtime": "^6.22.0",
 10 |     "babel-preset-es2015": "^6.22.0",
 11 |     "babel-preset-react": "^6.22.0",
 12 |     "babel-preset-stage-0": "^6.22.0",
 13 |     "case-sensitive-paths-webpack-plugin": "1.1.4",
 14 |     "chalk": "1.1.3",
 15 |     "connect-history-api-fallback": "1.3.0",
 16 |     "cross-spawn": "4.0.2",
 17 |     "css-loader": "0.26.0",
 18 |     "deep-freeze": "0.0.1",
 19 |     "detect-port": "1.0.1",
 20 |     "dotenv": "2.0.0",
 21 |     "enzyme": "^2.7.1",
 22 |     "eslint": "3.8.1",
 23 |     "eslint-config-react-app": "^0.5.0",
 24 |     "eslint-loader": "1.6.0",
 25 |     "eslint-plugin-flowtype": "2.21.0",
 26 |     "eslint-plugin-import": "2.0.1",
 27 |     "eslint-plugin-jsx-a11y": "2.2.3",
 28 |     "eslint-plugin-react": "6.4.1",
 29 |     "expect": "^1.20.2",
 30 |     "extract-text-webpack-plugin": "1.0.1",
 31 |     "file-loader": "0.9.0",
 32 |     "filesize": "3.3.0",
 33 |     "fs-extra": "0.30.0",
 34 |     "gzip-size": "3.0.0",
 35 |     "html-webpack-plugin": "2.24.0",
 36 |     "http-proxy-middleware": "0.17.2",
 37 |     "jest": "17.0.2",
 38 |     "json-loader": "0.5.4",
 39 |     "object-assign": "4.1.0",
 40 |     "path-exists": "2.1.0",
 41 |     "postcss-loader": "1.0.0",
 42 |     "promise": "7.1.1",
 43 |     "react-addons-test-utils": "^15.4.2",
 44 |     "react-dev-utils": "^0.4.2",
 45 |     "react-scripts": "^0.8.5",
 46 |     "recursive-readdir": "2.1.0",
 47 |     "redux-devtools": "^3.3.2",
 48 |     "reflux": "^5.0.4",
 49 |     "strip-ansi": "3.0.1",
 50 |     "style-loader": "0.13.1",
 51 |     "truffle-contract": "^1.1.8",
 52 |     "url-loader": "0.5.7",
 53 |     "web3": "^0.18.2",
 54 |     "webpack": "1.14.0",
 55 |     "webpack-dev-server": "1.16.2",
 56 |     "webpack-manifest-plugin": "1.1.0",
 57 |     "whatwg-fetch": "1.0.0"
 58 |   },
 59 |   "dependencies": {
 60 |     "babel-polyfill": "^6.22.0",
 61 |     "babel-runtime": "^6.22.0",
 62 |     "humps": "^2.0.0",
 63 |     "normalizr": "^3.2.1",
 64 |     "react": "^15.4.2",
 65 |     "react-dom": "^15.4.2",
 66 |     "react-qrcode": "^0.1.3",
 67 |     "react-redux": "^5.0.2",
 68 |     "react-router": "^3.0.2",
 69 |     "react-router-redux": "^4.0.8",
 70 |     "react-table": "^5.3.2",
 71 |     "redux": "^3.6.0",
 72 |     "redux-logger": "^2.8.1",
 73 |     "redux-thunk": "^2.2.0"
 74 |   },
 75 |   "scripts": {
 76 |     "start": "node scripts/start.js",
 77 |     "build": "node scripts/build.js",
 78 |     "test": "node scripts/test.js --env=jsdom"
 79 |   },
 80 |   "standard": {
 81 |     "globals": [
 82 |       "web3"
 83 |     ]
 84 |   },
 85 |   "jest": {
 86 |     "collectCoverageFrom": [
 87 |       "src/**/*.{js,jsx}"
 88 |     ],
 89 |     "setupFiles": [
 90 |       "<rootDir>/config/polyfills.js"
 91 |     ],
 92 |     "testPathIgnorePatterns": [
 93 |       "<rootDir>[/\\\\](build|docs|node_modules)[/\\\\]"
 94 |     ],
 95 |     "testEnvironment": "node",
 96 |     "testURL": "http://localhost",
 97 |     "transform": {
 98 |       "^.+\\.(js|jsx)$": "<rootDir>/node_modules/babel-jest",
 99 |       "^.+\\.css$": "<rootDir>/config/jest/cssTransform.js",
100 |       "^(?!.*\\.(js|jsx|css|json)$)": "<rootDir>/config/jest/fileTransform.js"
101 |     },
102 |     "transformIgnorePatterns": [
103 |       "[/\\\\]node_modules[/\\\\].+\\.(js|jsx)$"
104 |     ],
105 |     "moduleNameMapper": {
106 |       "^react-native$": "react-native-web"
107 |     }
108 |   },
109 |   "eslintConfig": {
110 |     "extends": "react-app"
111 |   }
112 | }
113 | 


--------------------------------------------------------------------------------
/public/css/bootstrap-theme.min.css:
--------------------------------------------------------------------------------
1 | /*!
2 |  * Bootstrap v3.3.7 (http://getbootstrap.com)
3 |  * Copyright 2011-2016 Twitter, Inc.
4 |  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
5 |  */.btn-danger,.btn-default,.btn-info,.btn-primary,.btn-success,.btn-warning{text-shadow:0 -1px 0 rgba(0,0,0,.2);-webkit-box-shadow:inset 0 1px 0 rgba(255,255,255,.15),0 1px 1px rgba(0,0,0,.075);box-shadow:inset 0 1px 0 rgba(255,255,255,.15),0 1px 1px rgba(0,0,0,.075)}.btn-danger.active,.btn-danger:active,.btn-default.active,.btn-default:active,.btn-info.active,.btn-info:active,.btn-primary.active,.btn-primary:active,.btn-success.active,.btn-success:active,.btn-warning.active,.btn-warning:active{-webkit-box-shadow:inset 0 3px 5px rgba(0,0,0,.125);box-shadow:inset 0 3px 5px rgba(0,0,0,.125)}.btn-danger.disabled,.btn-danger[disabled],.btn-default.disabled,.btn-default[disabled],.btn-info.disabled,.btn-info[disabled],.btn-primary.disabled,.btn-primary[disabled],.btn-success.disabled,.btn-success[disabled],.btn-warning.disabled,.btn-warning[disabled],fieldset[disabled] .btn-danger,fieldset[disabled] .btn-default,fieldset[disabled] .btn-info,fieldset[disabled] 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6 | /*# sourceMappingURL=bootstrap-theme.min.css.map */


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/public/css/styles.css:
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1 | body {
2 |   backgroud: #fafafa;
3 | }
4 | 


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/public/favicon.ico:
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https://raw.githubusercontent.com/davidoevans/react-redux-dapp/0557e3b8193be15d40e439b32fd0c22d4bf7176d/public/favicon.ico


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/public/index.html:
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 1 | <!doctype html>
 2 | <html lang="en">
 3 |   <head>
 4 |     <meta charset="utf-8">
 5 |     <link rel="stylesheet" href="css/bootstrap.min.css">
 6 |     <link rel="stylesheet" href="css/bootstrap-theme.min.css">
 7 |     <link rel="stylesheet" href="css/styles.css">
 8 |     <!--
 9 |       Notice the use of %PUBLIC_URL% in the tag above.
10 |       It will be replaced with the URL of the `public` folder during the build.
11 |       Only files inside the `public` folder can be referenced from the HTML.
12 | 
13 |       Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
14 |       work correctly both with client-side routing and a non-root public URL.
15 |       Learn how to configure a non-root public URL by running `npm run build`.
16 |     -->
17 |     <title>React dApp</title>
18 |   </head>
19 |   <body>
20 |     <div class="container">
21 |       <div id="root"></div>
22 |     </div>
23 |     <!--
24 |       This HTML file is a template.
25 |       If you open it directly in the browser, you will see an empty page.
26 | 
27 |       You can add webfonts, meta tags, or analytics to this file.
28 |       The build step will place the bundled scripts into the <body> tag.
29 | 
30 |       To begin the development, run `npm start`.
31 |       To create a production bundle, use `npm run build`.
32 |     -->
33 |     <script type="text/javascript" src="js/jquery.min.js"></script>
34 |     <script type="text/javascript" src="js/bootstrap.min.js"></script>
35 |   </body>
36 | </html>
37 | 


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/public/js/bootstrap.min.js:
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1 | /*!
2 |  * Bootstrap v3.3.7 (http://getbootstrap.com)
3 |  * Copyright 2011-2016 Twitter, Inc.
4 |  * Licensed under the MIT license
5 |  */
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7 | this.activeTarget=b,this.clear();var c=this.selector+'[data-target="'+b+'"],'+this.selector+'[href="'+b+'"]',d=a(c).parents("li").addClass("active");d.parent(".dropdown-menu").length&&(d=d.closest("li.dropdown").addClass("active")),d.trigger("activate.bs.scrollspy")},b.prototype.clear=function(){a(this.selector).parentsUntil(this.options.target,".active").removeClass("active")};var d=a.fn.scrollspy;a.fn.scrollspy=c,a.fn.scrollspy.Constructor=b,a.fn.scrollspy.noConflict=function(){return a.fn.scrollspy=d,this},a(window).on("load.bs.scrollspy.data-api",function(){a('[data-spy="scroll"]').each(function(){var b=a(this);c.call(b,b.data())})})}(jQuery),+function(a){"use strict";function b(b){return this.each(function(){var d=a(this),e=d.data("bs.tab");e||d.data("bs.tab",e=new c(this)),"string"==typeof b&&e[b]()})}var c=function(b){this.element=a(b)};c.VERSION="3.3.7",c.TRANSITION_DURATION=150,c.prototype.show=function(){var b=this.element,c=b.closest("ul:not(.dropdown-menu)"),d=b.data("target");if(d||(d=b.attr("href"),d=d&&d.replace(/.*(?=#[^\s]*$)/,"")),!b.parent("li").hasClass("active")){var e=c.find(".active:last a"),f=a.Event("hide.bs.tab",{relatedTarget:b[0]}),g=a.Event("show.bs.tab",{relatedTarget:e[0]});if(e.trigger(f),b.trigger(g),!g.isDefaultPrevented()&&!f.isDefaultPrevented()){var h=a(d);this.activate(b.closest("li"),c),this.activate(h,h.parent(),function(){e.trigger({type:"hidden.bs.tab",relatedTarget:b[0]}),b.trigger({type:"shown.bs.tab",relatedTarget:e[0]})})}}},c.prototype.activate=function(b,d,e){function f(){g.removeClass("active").find("> .dropdown-menu > .active").removeClass("active").end().find('[data-toggle="tab"]').attr("aria-expanded",!1),b.addClass("active").find('[data-toggle="tab"]').attr("aria-expanded",!0),h?(b[0].offsetWidth,b.addClass("in")):b.removeClass("fade"),b.parent(".dropdown-menu").length&&b.closest("li.dropdown").addClass("active").end().find('[data-toggle="tab"]').attr("aria-expanded",!0),e&&e()}var g=d.find("> .active"),h=e&&a.support.transition&&(g.length&&g.hasClass("fade")||!!d.find("> .fade").length);g.length&&h?g.one("bsTransitionEnd",f).emulateTransitionEnd(c.TRANSITION_DURATION):f(),g.removeClass("in")};var d=a.fn.tab;a.fn.tab=b,a.fn.tab.Constructor=c,a.fn.tab.noConflict=function(){return a.fn.tab=d,this};var e=function(c){c.preventDefault(),b.call(a(this),"show")};a(document).on("click.bs.tab.data-api",'[data-toggle="tab"]',e).on("click.bs.tab.data-api",'[data-toggle="pill"]',e)}(jQuery),+function(a){"use strict";function b(b){return this.each(function(){var d=a(this),e=d.data("bs.affix"),f="object"==typeof b&&b;e||d.data("bs.affix",e=new c(this,f)),"string"==typeof b&&e[b]()})}var c=function(b,d){this.options=a.extend({},c.DEFAULTS,d),this.$target=a(this.options.target).on("scroll.bs.affix.data-api",a.proxy(this.checkPosition,this)).on("click.bs.affix.data-api",a.proxy(this.checkPositionWithEventLoop,this)),this.$element=a(b),this.affixed=null,this.unpin=null,this.pinnedOffset=null,this.checkPosition()};c.VERSION="3.3.7",c.RESET="affix affix-top affix-bottom",c.DEFAULTS={offset:0,target:window},c.prototype.getState=function(a,b,c,d){var e=this.$target.scrollTop(),f=this.$element.offset(),g=this.$target.height();if(null!=c&&"top"==this.affixed)return e<c&&"top";if("bottom"==this.affixed)return null!=c?!(e+this.unpin<=f.top)&&"bottom":!(e+g<=a-d)&&"bottom";var h=null==this.affixed,i=h?e:f.top,j=h?g:b;return null!=c&&e<=c?"top":null!=d&&i+j>=a-d&&"bottom"},c.prototype.getPinnedOffset=function(){if(this.pinnedOffset)return this.pinnedOffset;this.$element.removeClass(c.RESET).addClass("affix");var a=this.$target.scrollTop(),b=this.$element.offset();return this.pinnedOffset=b.top-a},c.prototype.checkPositionWithEventLoop=function(){setTimeout(a.proxy(this.checkPosition,this),1)},c.prototype.checkPosition=function(){if(this.$element.is(":visible")){var b=this.$element.height(),d=this.options.offset,e=d.top,f=d.bottom,g=Math.max(a(document).height(),a(document.body).height());"object"!=typeof d&&(f=e=d),"function"==typeof e&&(e=d.top(this.$element)),"function"==typeof f&&(f=d.bottom(this.$element));var h=this.getState(g,b,e,f);if(this.affixed!=h){null!=this.unpin&&this.$element.css("top","");var i="affix"+(h?"-"+h:""),j=a.Event(i+".bs.affix");if(this.$element.trigger(j),j.isDefaultPrevented())return;this.affixed=h,this.unpin="bottom"==h?this.getPinnedOffset():null,this.$element.removeClass(c.RESET).addClass(i).trigger(i.replace("affix","affixed")+".bs.affix")}"bottom"==h&&this.$element.offset({top:g-b-f})}};var d=a.fn.affix;a.fn.affix=b,a.fn.affix.Constructor=c,a.fn.affix.noConflict=function(){return a.fn.affix=d,this},a(window).on("load",function(){a('[data-spy="affix"]').each(function(){var c=a(this),d=c.data();d.offset=d.offset||{},null!=d.offsetBottom&&(d.offset.bottom=d.offsetBottom),null!=d.offsetTop&&(d.offset.top=d.offsetTop),b.call(c,d)})})}(jQuery);


--------------------------------------------------------------------------------
/scripts/build.js:
--------------------------------------------------------------------------------
  1 | // Do this as the first thing so that any code reading it knows the right env.
  2 | process.env.NODE_ENV = 'production';
  3 | 
  4 | // Load environment variables from .env file. Suppress warnings using silent
  5 | // if this file is missing. dotenv will never modify any environment variables
  6 | // that have already been set.
  7 | // https://github.com/motdotla/dotenv
  8 | require('dotenv').config({silent: true});
  9 | 
 10 | var chalk = require('chalk');
 11 | var fs = require('fs-extra');
 12 | var path = require('path');
 13 | var pathExists = require('path-exists');
 14 | var filesize = require('filesize');
 15 | var gzipSize = require('gzip-size').sync;
 16 | var webpack = require('webpack');
 17 | var config = require('../config/webpack.config.prod');
 18 | var paths = require('../config/paths');
 19 | var checkRequiredFiles = require('react-dev-utils/checkRequiredFiles');
 20 | var recursive = require('recursive-readdir');
 21 | var stripAnsi = require('strip-ansi');
 22 | 
 23 | var useYarn = pathExists.sync(paths.yarnLockFile);
 24 | 
 25 | // Warn and crash if required files are missing
 26 | if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
 27 |   process.exit(1);
 28 | }
 29 | 
 30 | // Input: /User/dan/app/build/static/js/main.82be8.js
 31 | // Output: /static/js/main.js
 32 | function removeFileNameHash(fileName) {
 33 |   return fileName
 34 |     .replace(paths.appBuild, '')
 35 |     .replace(/\/?(.*)(\.\w+)(\.js|\.css)/, (match, p1, p2, p3) => p1 + p3);
 36 | }
 37 | 
 38 | // Input: 1024, 2048
 39 | // Output: "(+1 KB)"
 40 | function getDifferenceLabel(currentSize, previousSize) {
 41 |   var FIFTY_KILOBYTES = 1024 * 50;
 42 |   var difference = currentSize - previousSize;
 43 |   var fileSize = !Number.isNaN(difference) ? filesize(difference) : 0;
 44 |   if (difference >= FIFTY_KILOBYTES) {
 45 |     return chalk.red('+' + fileSize);
 46 |   } else if (difference < FIFTY_KILOBYTES && difference > 0) {
 47 |     return chalk.yellow('+' + fileSize);
 48 |   } else if (difference < 0) {
 49 |     return chalk.green(fileSize);
 50 |   } else {
 51 |     return '';
 52 |   }
 53 | }
 54 | 
 55 | // First, read the current file sizes in build directory.
 56 | // This lets us display how much they changed later.
 57 | recursive(paths.appBuild, (err, fileNames) => {
 58 |   var previousSizeMap = (fileNames || [])
 59 |     .filter(fileName => /\.(js|css)$/.test(fileName))
 60 |     .reduce((memo, fileName) => {
 61 |       var contents = fs.readFileSync(fileName);
 62 |       var key = removeFileNameHash(fileName);
 63 |       memo[key] = gzipSize(contents);
 64 |       return memo;
 65 |     }, {});
 66 | 
 67 |   // Remove all content but keep the directory so that
 68 |   // if you're in it, you don't end up in Trash
 69 |   fs.emptyDirSync(paths.appBuild);
 70 | 
 71 |   // Start the webpack build
 72 |   build(previousSizeMap);
 73 | 
 74 |   // Merge with the public folder
 75 |   copyPublicFolder();
 76 | });
 77 | 
 78 | // Print a detailed summary of build files.
 79 | function printFileSizes(stats, previousSizeMap) {
 80 |   var assets = stats.toJson().assets
 81 |     .filter(asset => /\.(js|css)$/.test(asset.name))
 82 |     .map(asset => {
 83 |       var fileContents = fs.readFileSync(paths.appBuild + '/' + asset.name);
 84 |       var size = gzipSize(fileContents);
 85 |       var previousSize = previousSizeMap[removeFileNameHash(asset.name)];
 86 |       var difference = getDifferenceLabel(size, previousSize);
 87 |       return {
 88 |         folder: path.join('build', path.dirname(asset.name)),
 89 |         name: path.basename(asset.name),
 90 |         size: size,
 91 |         sizeLabel: filesize(size) + (difference ? ' (' + difference + ')' : '')
 92 |       };
 93 |     });
 94 |   assets.sort((a, b) => b.size - a.size);
 95 |   var longestSizeLabelLength = Math.max.apply(null,
 96 |     assets.map(a => stripAnsi(a.sizeLabel).length)
 97 |   );
 98 |   assets.forEach(asset => {
 99 |     var sizeLabel = asset.sizeLabel;
100 |     var sizeLength = stripAnsi(sizeLabel).length;
101 |     if (sizeLength < longestSizeLabelLength) {
102 |       var rightPadding = ' '.repeat(longestSizeLabelLength - sizeLength);
103 |       sizeLabel += rightPadding;
104 |     }
105 |     console.log(
106 |       '  ' + sizeLabel +
107 |       '  ' + chalk.dim(asset.folder + path.sep) + chalk.cyan(asset.name)
108 |     );
109 |   });
110 | }
111 | 
112 | // Print out errors
113 | function printErrors(summary, errors) {
114 |   console.log(chalk.red(summary));
115 |   console.log();
116 |   errors.forEach(err => {
117 |     console.log(err.message || err);
118 |     console.log();
119 |   });
120 | }
121 | 
122 | // Create the production build and print the deployment instructions.
123 | function build(previousSizeMap) {
124 |   console.log('Creating an optimized production build...');
125 |   webpack(config).run((err, stats) => {
126 |     if (err) {
127 |       printErrors('Failed to compile.', [err]);
128 |       process.exit(1);
129 |     }
130 | 
131 |     if (stats.compilation.errors.length) {
132 |       printErrors('Failed to compile.', stats.compilation.errors);
133 |       process.exit(1);
134 |     }
135 | 
136 |     if (process.env.CI && stats.compilation.warnings.length) {
137 |      printErrors('Failed to compile.', stats.compilation.warnings);
138 |      process.exit(1);
139 |    }
140 | 
141 |     console.log(chalk.green('Compiled successfully.'));
142 |     console.log();
143 | 
144 |     console.log('File sizes after gzip:');
145 |     console.log();
146 |     printFileSizes(stats, previousSizeMap);
147 |     console.log();
148 | 
149 |     var openCommand = process.platform === 'win32' ? 'start' : 'open';
150 |     var appPackage  = require(paths.appPackageJson);
151 |     var homepagePath = appPackage.homepage;
152 |     var publicPath = config.output.publicPath;
153 |     if (homepagePath && homepagePath.indexOf('.github.io/') !== -1) {
154 |       // "homepage": "http://user.github.io/project"
155 |       console.log('The project was built assuming it is hosted at ' + chalk.green(publicPath) + '.');
156 |       console.log('You can control this with the ' + chalk.green('homepage') + ' field in your '  + chalk.cyan('package.json') + '.');
157 |       console.log();
158 |       console.log('The ' + chalk.cyan('build') + ' folder is ready to be deployed.');
159 |       console.log('To publish it at ' + chalk.green(homepagePath) + ', run:');
160 |       // If script deploy has been added to package.json, skip the instructions
161 |       if (typeof appPackage.scripts.deploy === 'undefined') {
162 |         console.log();
163 |         if (useYarn) {
164 |           console.log('  ' + chalk.cyan('yarn') +  ' add --dev gh-pages');
165 |         } else {
166 |           console.log('  ' + chalk.cyan('npm') +  ' install --save-dev gh-pages');
167 |         }
168 |         console.log();
169 |         console.log('Add the following script in your ' + chalk.cyan('package.json') + '.');
170 |         console.log();
171 |         console.log('    ' + chalk.dim('// ...'));
172 |         console.log('    ' + chalk.yellow('"scripts"') + ': {');
173 |         console.log('      ' + chalk.dim('// ...'));
174 |         console.log('      ' + chalk.yellow('"deploy"') + ': ' + chalk.yellow('"npm run build&&gh-pages -d build"'));
175 |         console.log('    }');
176 |         console.log();
177 |         console.log('Then run:');
178 |       }
179 |       console.log();
180 |       console.log('  ' + chalk.cyan(useYarn ? 'yarn' : 'npm') +  ' run deploy');
181 |       console.log();
182 |     } else if (publicPath !== '/') {
183 |       // "homepage": "http://mywebsite.com/project"
184 |       console.log('The project was built assuming it is hosted at ' + chalk.green(publicPath) + '.');
185 |       console.log('You can control this with the ' + chalk.green('homepage') + ' field in your '  + chalk.cyan('package.json') + '.');
186 |       console.log();
187 |       console.log('The ' + chalk.cyan('build') + ' folder is ready to be deployed.');
188 |       console.log();
189 |     } else {
190 |       // no homepage or "homepage": "http://mywebsite.com"
191 |       console.log('The project was built assuming it is hosted at the server root.');
192 |       if (homepagePath) {
193 |         // "homepage": "http://mywebsite.com"
194 |         console.log('You can control this with the ' + chalk.green('homepage') + ' field in your '  + chalk.cyan('package.json') + '.');
195 |         console.log();
196 |       } else {
197 |         // no homepage
198 |         console.log('To override this, specify the ' + chalk.green('homepage') + ' in your '  + chalk.cyan('package.json') + '.');
199 |         console.log('For example, add this to build it for GitHub Pages:')
200 |         console.log();
201 |         console.log('  ' + chalk.green('"homepage"') + chalk.cyan(': ') + chalk.green('"http://myname.github.io/myapp"') + chalk.cyan(','));
202 |         console.log();
203 |       }
204 |       console.log('The ' + chalk.cyan('build') + ' folder is ready to be deployed.');
205 |       console.log('You may also serve it locally with a static server:')
206 |       console.log();
207 |       if (useYarn) {
208 |         console.log('  ' + chalk.cyan('yarn') +  ' global add pushstate-server');
209 |       } else {
210 |         console.log('  ' + chalk.cyan('npm') +  ' install -g pushstate-server');
211 |       }
212 |       console.log('  ' + chalk.cyan('pushstate-server') + ' build');
213 |       console.log('  ' + chalk.cyan(openCommand) + ' http://localhost:9000');
214 |       console.log();
215 |     }
216 |   });
217 | }
218 | 
219 | function copyPublicFolder() {
220 |   fs.copySync(paths.appPublic, paths.appBuild, {
221 |     dereference: true,
222 |     filter: file => file !== paths.appHtml
223 |   });
224 | }
225 | 


--------------------------------------------------------------------------------
/scripts/start.js:
--------------------------------------------------------------------------------
  1 | process.env.NODE_ENV = 'development';
  2 | 
  3 | // Load environment variables from .env file. Suppress warnings using silent
  4 | // if this file is missing. dotenv will never modify any environment variables
  5 | // that have already been set.
  6 | // https://github.com/motdotla/dotenv
  7 | require('dotenv').config({silent: true});
  8 | 
  9 | var chalk = require('chalk');
 10 | var webpack = require('webpack');
 11 | var WebpackDevServer = require('webpack-dev-server');
 12 | var historyApiFallback = require('connect-history-api-fallback');
 13 | var httpProxyMiddleware = require('http-proxy-middleware');
 14 | var detect = require('detect-port');
 15 | var clearConsole = require('react-dev-utils/clearConsole');
 16 | var checkRequiredFiles = require('react-dev-utils/checkRequiredFiles');
 17 | var formatWebpackMessages = require('react-dev-utils/formatWebpackMessages');
 18 | var getProcessForPort = require('react-dev-utils/getProcessForPort');
 19 | var openBrowser = require('react-dev-utils/openBrowser');
 20 | var prompt = require('react-dev-utils/prompt');
 21 | var pathExists = require('path-exists');
 22 | var config = require('../config/webpack.config.dev');
 23 | var paths = require('../config/paths');
 24 | 
 25 | var useYarn = pathExists.sync(paths.yarnLockFile);
 26 | var cli = useYarn ? 'yarn' : 'npm';
 27 | var isInteractive = process.stdout.isTTY;
 28 | 
 29 | // Warn and crash if required files are missing
 30 | if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
 31 |   process.exit(1);
 32 | }
 33 | 
 34 | // Tools like Cloud9 rely on this.
 35 | var DEFAULT_PORT = process.env.PORT || 3000;
 36 | var compiler;
 37 | var handleCompile;
 38 | 
 39 | // You can safely remove this after ejecting.
 40 | // We only use this block for testing of Create React App itself:
 41 | var isSmokeTest = process.argv.some(arg => arg.indexOf('--smoke-test') > -1);
 42 | if (isSmokeTest) {
 43 |   handleCompile = function (err, stats) {
 44 |     if (err || stats.hasErrors() || stats.hasWarnings()) {
 45 |       process.exit(1);
 46 |     } else {
 47 |       process.exit(0);
 48 |     }
 49 |   };
 50 | }
 51 | 
 52 | function setupCompiler(host, port, protocol) {
 53 |   // "Compiler" is a low-level interface to Webpack.
 54 |   // It lets us listen to some events and provide our own custom messages.
 55 |   compiler = webpack(config, handleCompile);
 56 | 
 57 |   // "invalid" event fires when you have changed a file, and Webpack is
 58 |   // recompiling a bundle. WebpackDevServer takes care to pause serving the
 59 |   // bundle, so if you refresh, it'll wait instead of serving the old one.
 60 |   // "invalid" is short for "bundle invalidated", it doesn't imply any errors.
 61 |   compiler.plugin('invalid', function() {
 62 |     if (isInteractive) {
 63 |       clearConsole();
 64 |     }
 65 |     console.log('Compiling...');
 66 |   });
 67 | 
 68 |   var isFirstCompile = true;
 69 | 
 70 |   // "done" event fires when Webpack has finished recompiling the bundle.
 71 |   // Whether or not you have warnings or errors, you will get this event.
 72 |   compiler.plugin('done', function(stats) {
 73 |     if (isInteractive) {
 74 |       clearConsole();
 75 |     }
 76 | 
 77 |     // We have switched off the default Webpack output in WebpackDevServer
 78 |     // options so we are going to "massage" the warnings and errors and present
 79 |     // them in a readable focused way.
 80 |     var messages = formatWebpackMessages(stats.toJson({}, true));
 81 |     var isSuccessful = !messages.errors.length && !messages.warnings.length;
 82 |     var showInstructions = isSuccessful && (isInteractive || isFirstCompile);
 83 | 
 84 |     if (isSuccessful) {
 85 |       console.log(chalk.green('Compiled successfully!'));
 86 |     }
 87 | 
 88 |     if (showInstructions) {
 89 |       console.log();
 90 |       console.log('The app is running at:');
 91 |       console.log();
 92 |       console.log('  ' + chalk.cyan(protocol + '://' + host + ':' + port + '/'));
 93 |       console.log();
 94 |       console.log('Note that the development build is not optimized.');
 95 |       console.log('To create a production build, use ' + chalk.cyan(cli + ' run build') + '.');
 96 |       console.log();
 97 |       isFirstCompile = false;
 98 |     }
 99 | 
100 |     // If errors exist, only show errors.
101 |     if (messages.errors.length) {
102 |       console.log(chalk.red('Failed to compile.'));
103 |       console.log();
104 |       messages.errors.forEach(message => {
105 |         console.log(message);
106 |         console.log();
107 |       });
108 |       return;
109 |     }
110 | 
111 |     // Show warnings if no errors were found.
112 |     if (messages.warnings.length) {
113 |       console.log(chalk.yellow('Compiled with warnings.'));
114 |       console.log();
115 |       messages.warnings.forEach(message => {
116 |         console.log(message);
117 |         console.log();
118 |       });
119 |       // Teach some ESLint tricks.
120 |       console.log('You may use special comments to disable some warnings.');
121 |       console.log('Use ' + chalk.yellow('// eslint-disable-next-line') + ' to ignore the next line.');
122 |       console.log('Use ' + chalk.yellow('/* eslint-disable */') + ' to ignore all warnings in a file.');
123 |     }
124 |   });
125 | }
126 | 
127 | // We need to provide a custom onError function for httpProxyMiddleware.
128 | // It allows us to log custom error messages on the console.
129 | function onProxyError(proxy) {
130 |   return function(err, req, res){
131 |     var host = req.headers && req.headers.host;
132 |     console.log(
133 |       chalk.red('Proxy error:') + ' Could not proxy request ' + chalk.cyan(req.url) +
134 |       ' from ' + chalk.cyan(host) + ' to ' + chalk.cyan(proxy) + '.'
135 |     );
136 |     console.log(
137 |       'See https://nodejs.org/api/errors.html#errors_common_system_errors for more information (' +
138 |       chalk.cyan(err.code) + ').'
139 |     );
140 |     console.log();
141 | 
142 |     // And immediately send the proper error response to the client.
143 |     // Otherwise, the request will eventually timeout with ERR_EMPTY_RESPONSE on the client side.
144 |     if (res.writeHead && !res.headersSent) {
145 |         res.writeHead(500);
146 |     }
147 |     res.end('Proxy error: Could not proxy request ' + req.url + ' from ' +
148 |       host + ' to ' + proxy + ' (' + err.code + ').'
149 |     );
150 |   }
151 | }
152 | 
153 | function addMiddleware(devServer) {
154 |   // `proxy` lets you to specify a fallback server during development.
155 |   // Every unrecognized request will be forwarded to it.
156 |   var proxy = require(paths.appPackageJson).proxy;
157 |   devServer.use(historyApiFallback({
158 |     // Paths with dots should still use the history fallback.
159 |     // See https://github.com/facebookincubator/create-react-app/issues/387.
160 |     disableDotRule: true,
161 |     // For single page apps, we generally want to fallback to /index.html.
162 |     // However we also want to respect `proxy` for API calls.
163 |     // So if `proxy` is specified, we need to decide which fallback to use.
164 |     // We use a heuristic: if request `accept`s text/html, we pick /index.html.
165 |     // Modern browsers include text/html into `accept` header when navigating.
166 |     // However API calls like `fetch()` won’t generally accept text/html.
167 |     // If this heuristic doesn’t work well for you, don’t use `proxy`.
168 |     htmlAcceptHeaders: proxy ?
169 |       ['text/html'] :
170 |       ['text/html', '*/*']
171 |   }));
172 |   if (proxy) {
173 |     if (typeof proxy !== 'string') {
174 |       console.log(chalk.red('When specified, "proxy" in package.json must be a string.'));
175 |       console.log(chalk.red('Instead, the type of "proxy" was "' + typeof proxy + '".'));
176 |       console.log(chalk.red('Either remove "proxy" from package.json, or make it a string.'));
177 |       process.exit(1);
178 |     }
179 | 
180 |     // Otherwise, if proxy is specified, we will let it handle any request.
181 |     // There are a few exceptions which we won't send to the proxy:
182 |     // - /index.html (served as HTML5 history API fallback)
183 |     // - /*.hot-update.json (WebpackDevServer uses this too for hot reloading)
184 |     // - /sockjs-node/* (WebpackDevServer uses this for hot reloading)
185 |     // Tip: use https://jex.im/regulex/ to visualize the regex
186 |     var mayProxy = /^(?!\/(index\.html$|.*\.hot-update\.json$|sockjs-node\/)).*$/;
187 | 
188 |     // Pass the scope regex both to Express and to the middleware for proxying
189 |     // of both HTTP and WebSockets to work without false positives.
190 |     var hpm = httpProxyMiddleware(pathname => mayProxy.test(pathname), {
191 |       target: proxy,
192 |       logLevel: 'silent',
193 |       onProxyReq: function(proxyReq, req, res) {
194 |         // Browers may send Origin headers even with same-origin
195 |         // requests. To prevent CORS issues, we have to change
196 |         // the Origin to match the target URL.
197 |         if (proxyReq.getHeader('origin')) {
198 |           proxyReq.setHeader('origin', proxy);
199 |         }
200 |       },
201 |       onError: onProxyError(proxy),
202 |       secure: false,
203 |       changeOrigin: true,
204 |       ws: true
205 |     });
206 |     devServer.use(mayProxy, hpm);
207 | 
208 |     // Listen for the websocket 'upgrade' event and upgrade the connection.
209 |     // If this is not done, httpProxyMiddleware will not try to upgrade until
210 |     // an initial plain HTTP request is made.
211 |     devServer.listeningApp.on('upgrade', hpm.upgrade);
212 |   }
213 | 
214 |   // Finally, by now we have certainly resolved the URL.
215 |   // It may be /index.html, so let the dev server try serving it again.
216 |   devServer.use(devServer.middleware);
217 | }
218 | 
219 | function runDevServer(host, port, protocol) {
220 |   var devServer = new WebpackDevServer(compiler, {
221 |     // Enable gzip compression of generated files.
222 |     compress: true,
223 |     // Silence WebpackDevServer's own logs since they're generally not useful.
224 |     // It will still show compile warnings and errors with this setting.
225 |     clientLogLevel: 'none',
226 |     // By default WebpackDevServer serves physical files from current directory
227 |     // in addition to all the virtual build products that it serves from memory.
228 |     // This is confusing because those files won’t automatically be available in
229 |     // production build folder unless we copy them. However, copying the whole
230 |     // project directory is dangerous because we may expose sensitive files.
231 |     // Instead, we establish a convention that only files in `public` directory
232 |     // get served. Our build script will copy `public` into the `build` folder.
233 |     // In `index.html`, you can get URL of `public` folder with %PUBLIC_PATH%:
234 |     // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
235 |     // In JavaScript code, you can access it with `process.env.PUBLIC_URL`.
236 |     // Note that we only recommend to use `public` folder as an escape hatch
237 |     // for files like `favicon.ico`, `manifest.json`, and libraries that are
238 |     // for some reason broken when imported through Webpack. If you just want to
239 |     // use an image, put it in `src` and `import` it from JavaScript instead.
240 |     contentBase: paths.appPublic,
241 |     // Enable hot reloading server. It will provide /sockjs-node/ endpoint
242 |     // for the WebpackDevServer client so it can learn when the files were
243 |     // updated. The WebpackDevServer client is included as an entry point
244 |     // in the Webpack development configuration. Note that only changes
245 |     // to CSS are currently hot reloaded. JS changes will refresh the browser.
246 |     hot: true,
247 |     // It is important to tell WebpackDevServer to use the same "root" path
248 |     // as we specified in the config. In development, we always serve from /.
249 |     publicPath: config.output.publicPath,
250 |     // WebpackDevServer is noisy by default so we emit custom message instead
251 |     // by listening to the compiler events with `compiler.plugin` calls above.
252 |     quiet: true,
253 |     // Reportedly, this avoids CPU overload on some systems.
254 |     // https://github.com/facebookincubator/create-react-app/issues/293
255 |     watchOptions: {
256 |       ignored: /node_modules/
257 |     },
258 |     // Enable HTTPS if the HTTPS environment variable is set to 'true'
259 |     https: protocol === "https",
260 |     host: host
261 |   });
262 | 
263 |   // Our custom middleware proxies requests to /index.html or a remote API.
264 |   addMiddleware(devServer);
265 | 
266 |   // Launch WebpackDevServer.
267 |   devServer.listen(port, (err, result) => {
268 |     if (err) {
269 |       return console.log(err);
270 |     }
271 | 
272 |     if (isInteractive) {
273 |       clearConsole();
274 |     }
275 |     console.log(chalk.cyan('Starting the development server...'));
276 |     console.log();
277 | 
278 |     if (isInteractive) {
279 |       openBrowser(protocol + '://' + host + ':' + port + '/');
280 |     }
281 |   });
282 | }
283 | 
284 | function run(port) {
285 |   var protocol = process.env.HTTPS === 'true' ? "https" : "http";
286 |   var host = process.env.HOST || 'localhost';
287 |   setupCompiler(host, port, protocol);
288 |   runDevServer(host, port, protocol);
289 | }
290 | 
291 | // We attempt to use the default port but if it is busy, we offer the user to
292 | // run on a different port. `detect()` Promise resolves to the next free port.
293 | detect(DEFAULT_PORT).then(port => {
294 |   if (port === DEFAULT_PORT) {
295 |     run(port);
296 |     return;
297 |   }
298 | 
299 |   if (isInteractive) {
300 |     clearConsole();
301 |     var existingProcess = getProcessForPort(DEFAULT_PORT);
302 |     var question =
303 |       chalk.yellow('Something is already running on port ' + DEFAULT_PORT + '.' +
304 |         ((existingProcess) ? ' Probably:\n  ' + existingProcess : '')) +
305 |         '\n\nWould you like to run the app on another port instead?';
306 | 
307 |     prompt(question, true).then(shouldChangePort => {
308 |       if (shouldChangePort) {
309 |         run(port);
310 |       }
311 |     });
312 |   } else {
313 |     console.log(chalk.red('Something is already running on port ' + DEFAULT_PORT + '.'));
314 |   }
315 | });
316 | 


--------------------------------------------------------------------------------
/scripts/test.js:
--------------------------------------------------------------------------------
 1 | process.env.NODE_ENV = 'test';
 2 | process.env.PUBLIC_URL = '';
 3 | 
 4 | // Load environment variables from .env file. Suppress warnings using silent
 5 | // if this file is missing. dotenv will never modify any environment variables
 6 | // that have already been set.
 7 | // https://github.com/motdotla/dotenv
 8 | require('dotenv').config({silent: true});
 9 | 
10 | const jest = require('jest');
11 | const argv = process.argv.slice(2);
12 | 
13 | // Watch unless on CI or in coverage mode
14 | if (!process.env.CI && argv.indexOf('--coverage') < 0) {
15 |   argv.push('--watch');
16 | }
17 | 
18 | // A temporary hack to clear terminal correctly.
19 | // You can remove this after updating to Jest 18 when it's out.
20 | // https://github.com/facebook/jest/pull/2230
21 | var realWrite = process.stdout.write;
22 | var CLEAR = process.platform === 'win32' ? '\x1Bc' : '\x1B[2J\x1B[3J\x1B[H';
23 | process.stdout.write = function(chunk, encoding, callback) {
24 |   if (chunk === '\x1B[2J\x1B[H') {
25 |     chunk = CLEAR;
26 |   }
27 |   return realWrite.call(this, chunk, encoding, callback);
28 | };
29 | 
30 | 
31 | jest.run(argv);
32 | 


--------------------------------------------------------------------------------
/src/actions/index.js:
--------------------------------------------------------------------------------
  1 | import ethereum from '../middleware/ethereum'
  2 | import crypto from '../middleware/crypto'
  3 | import { RECEIVE_ACCOUNTS } from '../reducers/accounts'
  4 | import { RECEIVE_CRYPTOS } from '../reducers/cryptos'
  5 | import { SELECT_CRYPTO, SELECT_FROM_ADDRESS, SELECT_TO_ADDRESS, ENTER_AMOUNT } from '../reducers/transfer'
  6 | import { SHOW_TRANSACTIONS, ADD_TRANSACTION } from '../reducers/transactions'
  7 | 
  8 | import Web3 from 'web3'
  9 | 
 10 | const web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'))
 11 | 
 12 | const receiveAccounts = accounts => ({
 13 |   type: RECEIVE_ACCOUNTS,
 14 |   accounts: accounts
 15 | })
 16 | 
 17 | const setFromAddress = address => ({
 18 |   type: SELECT_FROM_ADDRESS,
 19 |   address
 20 | })
 21 | 
 22 | const setToAddress = address => ({
 23 |   type: SELECT_TO_ADDRESS,
 24 |   address
 25 | })
 26 | 
 27 | export const addTransactionAction = transaction => ({
 28 |   type: ADD_TRANSACTION,
 29 |   transaction
 30 | })
 31 | 
 32 | export const showTransactions = transactions => ({
 33 |   type: SHOW_TRANSACTIONS,
 34 |   transactions
 35 | })
 36 | 
 37 | export const selectFromAddress = address => (dispatch, getState) => {
 38 |   dispatch(setFromAddress(address))
 39 | }
 40 | 
 41 | export const selectToAddress = address => (dispatch, getState) => {
 42 |   dispatch(setToAddress(address))
 43 | }
 44 | 
 45 | export const getAllAccounts = () => (dispatch, getState) => {
 46 |   ethereum.getAccounts(accounts => {
 47 |     dispatch(receiveAccounts(accounts))
 48 |     if (typeof getState().transfer.detail.from === "undefined") {
 49 |       dispatch(setFromAddress(accounts[0].address))
 50 |     }
 51 |     if (typeof getState().transfer.detail.to === "undefined") {
 52 |       dispatch(setToAddress(accounts[1].address))
 53 |     }
 54 | 
 55 |   })
 56 | }
 57 | 
 58 | const setCrypto = id => ({
 59 |   type: SELECT_CRYPTO,
 60 |   crypto: id
 61 | })
 62 | 
 63 | export const selectCrypto = id => (dispatch, getState) => {
 64 |   dispatch(setCrypto(id))
 65 | }
 66 | 
 67 | const receiveSupportedCryptos = cryptos => ({
 68 |   type: RECEIVE_CRYPTOS,
 69 |   cryptos: cryptos
 70 | })
 71 | 
 72 | export const getCryptos = () => (dispatch, getState) => {
 73 |   crypto.getCryptos(cryptos => {
 74 |     dispatch(receiveSupportedCryptos(cryptos))
 75 |     if (typeof getState().transfer.detail.crypto === "undefined") {
 76 |       dispatch(setCrypto(cryptos[0]))
 77 |     }
 78 |   })
 79 | }
 80 | 
 81 | const setAmount = amount => ({
 82 |   type: ENTER_AMOUNT,
 83 |   amount
 84 | })
 85 | 
 86 | export const enterAmount = amount => (dispatch, getState) => {
 87 |     dispatch(setAmount(amount))
 88 | }
 89 | 
 90 | export const emitTransfer = () => (dispatch, getState) => {
 91 |   let txn = getState().transfer.detail
 92 |   let txnHash = ethereum.transfer(txn)
 93 |   console.log(`txnHash: ${txnHash}`)
 94 | }
 95 | 
 96 | export const fetchTransactions = () => (dispatch, getState) => {
 97 |   let filter = web3.eth.filter('latest');
 98 |   return filter.watch(function(error, result) {
 99 |       if (error) {
100 |         console.log(error)
101 |       } else{
102 |         console.log(`result: ${result}`)
103 |         var block = web3.eth.getBlock(result, true)
104 | 
105 |         console.log('block #' + block.number)
106 |         console.dir(block.transactions)
107 |         //console.log(web3.version)
108 |         //debugger
109 | 
110 |         // we know there is only 1 txn per block in test...accessing only the first transactions
111 |         // in a block won't work beyond localhost
112 |         let txn = block.transactions[0]
113 |         txn.receipt = web3.eth.getTransactionReceipt(block.transactions[0].hash)
114 |         dispatch(addTransactionAction(txn))
115 |         dispatch(showTransactions(getState().transactions))
116 |         dispatch(getAllAccounts())
117 |         //debugger
118 |       }
119 |     }
120 |   )
121 | 
122 | }
123 | 
124 | export const RESET_ERROR_MESSAGE = 'RESET_ERROR_MESSAGE';
125 | 
126 | // Resets the currently visible error message
127 | export const resetErrorMessage = () => ({
128 |   type: RESET_ERROR_MESSAGE
129 | })
130 | 


--------------------------------------------------------------------------------
/src/components/Account.js:
--------------------------------------------------------------------------------
 1 | import React, { PropTypes } from 'react'
 2 | 
 3 | const Account = ({ address, balance }) => (
 4 |   <div>
 5 |     {address} - {balance.toNumber()}
 6 |   </div>
 7 | )
 8 | 
 9 | Account.propTypes = {
10 |   address: PropTypes.string,
11 |   balance: PropTypes.object
12 | }
13 | 
14 | export default Account
15 | 


--------------------------------------------------------------------------------
/src/components/AccountItem.js:
--------------------------------------------------------------------------------
 1 | import React, { PropTypes } from 'react'
 2 | import Account from './Account'
 3 | 
 4 | const AccountItem = ({ account }) => (
 5 |   <div>
 6 |     <Account address={account.address} balance={account.balance} />
 7 |   </div>
 8 | )
 9 | 
10 | AccountItem.propTypes = {
11 |   account: PropTypes.shape({
12 |     address: PropTypes.string.isRequired,
13 |     balance: PropTypes.object.isRequired
14 |   }).isRequired
15 | }
16 | 
17 | export default AccountItem
18 | 


--------------------------------------------------------------------------------
/src/components/AccountTable.js:
--------------------------------------------------------------------------------
 1 | import React from 'react'
 2 | import ReactTable from 'react-table'
 3 | import 'react-table/react-table.css'
 4 | 
 5 | const columns = [{
 6 |   header: 'Public Address',
 7 |   accessor: 'address' // String-based value accessors!
 8 | },
 9 | // {
10 | //   header: 'Name',
11 | //   accessor: 'name'
12 | // },
13 | {
14 |   header: 'Balance',
15 |   columns: [{
16 |     header: 'Intrinsic (ETH)',
17 |     accessor: 'balance',
18 |     render: props => <span className='number'>{props.value.toNumber()}</span>
19 |   }, {
20 |     header: 'Fiat (CAD)',
21 |     accessor: 'cadCoin',
22 |     render: props => (
23 |           <span className="number">$ {parseFloat(Math.round(props.value * 100) / 100).toFixed(2)}</span>
24 |     )
25 |   }, {
26 |     header: 'MetaCoin',
27 |     accessor: 'meta'
28 |   }]
29 | }];
30 | 
31 | const AccountTable = ({ accounts }) => (
32 |   <ReactTable data={accounts}
33 |     columns={columns}
34 |     showPagination={false}
35 |     showPageSizeOptions={false}
36 |     defaultPageSize={10} />
37 | )
38 | 
39 | export default AccountTable
40 | 


--------------------------------------------------------------------------------
/src/components/AccountsList.js:
--------------------------------------------------------------------------------
 1 | import React, { PropTypes } from 'react';
 2 | 
 3 | const AccountsList = ({ title, children }) => (
 4 |   <div>
 5 |     <h3>{title}</h3>
 6 |     <div>{children}</div>
 7 |   </div>
 8 | )
 9 | 
10 | AccountsList.propTypes = {
11 |   children: PropTypes.node,
12 |   title: PropTypes.string.isRequired
13 | }
14 | 
15 | export default AccountsList
16 | 


--------------------------------------------------------------------------------
/src/components/AddressDropdown.js:
--------------------------------------------------------------------------------
 1 | import React from 'react'
 2 | 
 3 | const AddressDropdown = ({ label, accounts, action }) => (
 4 |   <div className="form-group form-group-sm">
 5 |     <label className="col-sm-2 control-label">{label}</label>
 6 |     <div className="col-sm-10">
 7 |       <select className="form-control" onChange={
 8 |           (e) => action(e.target.value)}>
 9 |         <option value="" selected disabled>Select Account</option>
10 |         {accounts.map(account =>
11 |           <option key={account.address}>{account.address}</option>
12 |           )
13 |         }
14 |       </select>
15 |     </div>
16 |   </div>
17 | )
18 | 
19 | export default AddressDropdown
20 | 


--------------------------------------------------------------------------------
/src/components/AmountInput.js:
--------------------------------------------------------------------------------
 1 | import React from 'react'
 2 | 
 3 | class AmountInput extends React.Component {
 4 |   constructor() {
 5 |     super()
 6 |     this.state = { valid: true }
 7 |     this.handleChange = this.handleChange.bind(this)
 8 |   }
 9 | 
10 |   handleChange(e) {
11 |     var numbers = /^[0-9]+$/;
12 | 
13 |     if (!e.target.value.match(numbers)) {
14 |       this.setState({valid: false});
15 |     } else {
16 |       this.setState({valid: true});
17 |     }
18 |   }
19 | 
20 |   render() {
21 |     var formClass = this.state.valid ? "form-group" : "form-group has-error";
22 | 
23 |     return (
24 |       <div className={formClass}>
25 |         <label className="col-sm-3 control-label">{this.props.label}</label>
26 |         <div className="col-sm-9">
27 |             <input className="form-control" onChange={this.handleChange} onBlur={(e) => this.props.action(e.target.value)} />
28 |         </div>
29 |       </div>
30 |     );
31 | 
32 |   }
33 | }
34 | 
35 | export default AmountInput
36 | 


--------------------------------------------------------------------------------
/src/components/CryptoDropdown.js:
--------------------------------------------------------------------------------
 1 | import React from 'react'
 2 | 
 3 | const CryptoDropdown = ({ label, cryptos, action }) => (
 4 |   <div className="form-group form-group-sm">
 5 |     <label className="col-sm-2 control-label">{label}</label>
 6 |     <div className="col-sm-10">
 7 |       <select className="form-control" onChange={
 8 |           (e) => action(e.target.value)}>
 9 |         <option value="" selected disabled>Select Account</option>
10 |         {cryptos.map(crypto =>
11 |           <option key={crypto.id}>{crypto.symbol}</option>
12 |           )
13 |         }
14 |       </select>
15 |     </div>
16 |   </div>
17 | )
18 | 
19 | export default CryptoDropdown
20 | 


--------------------------------------------------------------------------------
/src/components/HomePage.js:
--------------------------------------------------------------------------------
 1 | var React = require('react');
 2 | var ReactRouter = require('react-router');
 3 | var Link = ReactRouter.Link;
 4 | 
 5 | class HomePage extends React.Component {
 6 |   render() {
 7 |     return (
 8 |       <div className="container">
 9 |         <h1>Welcome to react-dapp.</h1>
10 |         <p>If you are wondering how you got here,
11 |           see <Link to="https://github.com/davidoevans/react-redux-dapp">react-redux-dapp</Link>
12 |         </p>
13 |       </div>
14 |     );
15 |   }
16 | };
17 | 
18 | export default HomePage;
19 | 


--------------------------------------------------------------------------------
/src/components/TransactionTable.js:
--------------------------------------------------------------------------------
 1 | import React from 'react'
 2 | import ReactTable from 'react-table'
 3 | import 'react-table/react-table.css'
 4 | 
 5 | const columns = [{
 6 |   header: 'Block',
 7 |   columns: [{
 8 |     header: 'Block Number',
 9 |     accessor: 'blockNumber'
10 |   }],
11 |   }, {
12 |   header: 'Transaction',
13 |   columns: [{
14 |     header: 'Hash',
15 |     accessor: 'hash'
16 |   },{
17 |     header: 'From',
18 |     accessor: 'from'
19 |   }, {
20 |     header: 'To',
21 |     accessor: 'to'
22 |   }, {
23 |     header: 'Gas Used',
24 |     accessor: 'gasUsed'
25 |   }, {
26 |     header: 'Gas Price',
27 |     accessor: 'gasPrice',
28 |     render: props => <span className='number'>{props.value.toNumber()}</span>
29 |   }, {
30 |     header: 'Cost',
31 |     accessor: 'cost'
32 |   }, {
33 |     header: 'Cost (ETH)',
34 |     accessor: 'costEth'
35 |   }, {
36 |     header: 'Cost (CAD)',
37 |     accessor: 'costCAD'
38 |   }]
39 | }];
40 | 
41 | const TransactionTable = ({ transactions }) => (
42 |   <ReactTable data={transactions}
43 |     columns={columns}
44 |     showPagination={false}
45 |     showPageSizeOptions={false}
46 |     defaultPageSize={3}
47 |     getTdProps={(state, rowInfo, column, instance) => {
48 |       return {
49 |         onClick: e => {
50 |           e.preventDefault()
51 |           console.log(`event: ${e}`)
52 |           console.log(`rowInfo: ${rowInfo.rowValues.blockHash}`)
53 | 
54 |         }
55 |       }
56 |     }}/>
57 | )
58 | 
59 | export default TransactionTable
60 | 


--------------------------------------------------------------------------------
/src/components/nav/NavBar.js:
--------------------------------------------------------------------------------
 1 | import React, { Component } from 'react';
 2 | import NavItem from './NavItem';
 3 | import { Link } from 'react-router';
 4 | 
 5 | export default class NavBar extends Component {
 6 | 
 7 |   render() {
 8 | 
 9 |     const navStyle = {
10 |       WebkitBoxShadow: "0 0 4px rgba(0,0,0,0.4)",
11 |       MozBoxShadow: "0 0 4px rgba(0,0,0,0.4)",
12 |       boxShadow: "0 0 4px rgba(0,0,0,0.4)",
13 |       borderRadius: 0
14 |     };
15 | 
16 |     const createLinkItem = (item, index) => {
17 |       return <NavItem key={item.title + index} href={item.href} title={item.title} />
18 |     };
19 | 
20 |     return (
21 |       <div>
22 |         <nav style={navStyle} className="navbar navbar-default">
23 |           <div className="container-fluid">
24 |             <div className="navbar-header">
25 |               <button type="button" className="navbar-toggle collapsed" data-toggle="collapse" data-target="#nav-collapse">
26 |                 <span className="icon-bar"></span>
27 |                 <span className="icon-bar"></span>
28 |                 <span className="icon-bar"></span>
29 |               </button>
30 |               <Link className="navbar-brand" to="/">react-dapp</Link>
31 |             </div>
32 |             <div className="collapse navbar-collapse" id="nav-collapse">
33 |               <ul className="nav navbar-nav">{this.props.navData.map(createLinkItem)} </ul>
34 |             </div>
35 |           </div>
36 |         </nav>
37 |       </div>
38 |     );
39 |   }
40 | }
41 | 


--------------------------------------------------------------------------------
/src/components/nav/NavItem.js:
--------------------------------------------------------------------------------
 1 | import React, { Component } from 'react';
 2 | import { Link } from 'react-router';
 3 | 
 4 | export default class NavItem extends Component {
 5 |   constructor() {
 6 |     super()
 7 |     this.state = {hover: false}
 8 |     this.mouseOver = this.mouseOver.bind(this)
 9 |     this.mouseOut = this.mouseOut.bind(this)
10 |   }
11 | 
12 |   mouseOver(e) {
13 |     this.setState({hover: true})
14 |   }
15 | 
16 |   mouseOut(e) {
17 |     this.setState({hover: false})
18 |   }
19 | 
20 |   render() {
21 |     return (
22 |       <li className={this.state.hover ? "active" : ""} onMouseOver={this.mouseOver} onMouseOut={this.mouseOut}>
23 |         <Link style={this.props.aStyle} to={this.props.href}>{this.props.title}</Link>
24 |       </li>
25 |     );
26 |   }
27 | }
28 | 


--------------------------------------------------------------------------------
/src/components/services/HttpService.js:
--------------------------------------------------------------------------------
 1 | // Thank you, Mark Price for sharing this with me in your lesson on reflux.
 2 | 
 3 | var baseUrl = 'http://localhost:6069';
 4 | 
 5 | var service = {
 6 |   get: function(url) {
 7 |     return fetch(baseUrl + url).then(function(response) {
 8 |       return response.json();
 9 |     });
10 |   },
11 |   post: function(url, data) {
12 |     return fetch(baseUrl + url, {
13 |       headers: {
14 |         'Accept': 'text/plain',
15 |         'Content-Type': 'application/json'
16 |       },
17 |       method: 'post',
18 |       body: JSON.stringify(data)
19 |     }).then(function(response) {
20 |       return response;
21 |     });
22 |   }
23 | }
24 | 
25 | module.exports = service;
26 | 


--------------------------------------------------------------------------------
/src/components/uport/UPortView.jsx:
--------------------------------------------------------------------------------
 1 | import React from 'react';
 2 | 
 3 | // import { Uport } from 'uport-lib';
 4 | //
 5 | // let uport = new Uport('MyDApp');
 6 | // let web3 = uport.getWeb3();
 7 | //
 8 | // uport.getUserPersona()
 9 | //      .then((persona) => {
10 | //        let profile = persona.profile;
11 | //        console.log(profile);
12 | //      });
13 | 
14 | var UPortView = React.createClass({
15 |   render: function() {
16 |     return (
17 |       <div></div>
18 |     )
19 |   }
20 | });
21 | 
22 | module.exports = UPortView;
23 | 


--------------------------------------------------------------------------------
/src/containers/App.js:
--------------------------------------------------------------------------------
 1 | import React from 'react'
 2 | import NavBar from '../components/nav/NavBar'
 3 | 
 4 | const navdata = [{"title": "Home", "href": "/"}, {"title": "YAEE", "href": "/yaee"}]
 5 | 
 6 | class App extends React.Component {
 7 | 
 8 |     render() {
 9 |       return (
10 |         <div>
11 |           <NavBar navData={navdata}/>
12 |           <hr/>
13 |           {this.props.children}
14 |         </div>
15 |       )
16 |     }
17 | }
18 | 
19 | export default App
20 | 


--------------------------------------------------------------------------------
/src/containers/YAEEContainer.js:
--------------------------------------------------------------------------------
 1 | import React from 'react'
 2 | import { connect } from 'react-redux'
 3 | import { getAllAccounts } from '../reducers/accounts'
 4 | import { getSupportedCryptos } from '../reducers/cryptos'
 5 | import { selectFromAddress, selectToAddress, selectCrypto, enterAmount, emitTransfer } from '../actions'
 6 | import AddressDropdown from '../components/AddressDropdown'
 7 | import CryptoDropdown from '../components/CryptoDropdown'
 8 | import AmountInput from '../components/AmountInput'
 9 | import AccountTable from '../components/AccountTable'
10 | import TransactionTable from '../components/TransactionTable'
11 | 
12 | const YAEEContainer = ({ accounts, cryptos, transactions, selectFromAddress, selectToAddress, selectCrypto, enterAmount, emitTransfer }) => {
13 |   return (
14 |     <div className="container">
15 |       <div className="row">
16 |         <div className="panel panel-primary">
17 |           <div className="panel-heading">
18 |             <h3>YAEE - Yet Another Ethereum Explorer</h3>
19 |           </div>
20 |         </div>
21 |         <div className="panel-body">
22 |           <div className="row">
23 |             <div className="col-sm-6">
24 |               <div className="form-horizontal">
25 |                 <AddressDropdown label="From" accounts={accounts} action={selectFromAddress} />
26 |                 <AddressDropdown label="To" accounts={accounts} action={selectToAddress} />
27 |                 <CryptoDropdown label="Crypto" cryptos={cryptos} action={selectCrypto} />
28 |               </div>
29 |               <div className="form-horizontal">
30 |                 <div className="form-group form-group-sm">
31 |                   <div className="col-sm-8">
32 |                     <AmountInput label="Amount" action={enterAmount} />
33 |                   </div>
34 |                   <div className="col-sm-2">
35 |                     <button type="submit" className="btn btn-primary btn-sm" onClick={() => emitTransfer()}>Transfer</button>
36 |                   </div>
37 |                 </div>
38 |               </div>
39 |             </div>
40 |           </div>
41 |           <TransactionTable id="transaction_table" transactions={transactions} />
42 |           <hr/>
43 |           <AccountTable accounts={accounts} />
44 |         </div>
45 |       </div>
46 |     </div>
47 | )}
48 | 
49 | const mapStateToProps = state => ({
50 |   accounts: getAllAccounts(state.accounts),
51 |   cryptos: getSupportedCryptos(state.cryptos),
52 |   transactions: state.transactions
53 | })
54 | 
55 | export default connect(
56 |   mapStateToProps,
57 |   { selectFromAddress, selectToAddress, selectCrypto, enterAmount, emitTransfer }
58 | )(YAEEContainer)
59 | 


--------------------------------------------------------------------------------
/src/index.js:
--------------------------------------------------------------------------------
 1 | import React from 'react'
 2 | import { render } from 'react-dom'
 3 | import { Router, Route, browserHistory } from 'react-router'
 4 | import { createStore, applyMiddleware } from 'redux'
 5 | import { Provider } from 'react-redux'
 6 | import createLogger from 'redux-logger'
 7 | import thunk from 'redux-thunk'
 8 | import thunkMiddleware from 'redux-thunk'
 9 | import reducer from './reducers'
10 | import { getAllAccounts } from './actions'
11 | import { getCryptos } from './actions'
12 | import { fetchTransactions } from './actions'
13 | import App from './containers/App'
14 | import YAEEContainer from './containers/YAEEContainer'
15 | 
16 | const middleware = [ thunk ];
17 | if (process.env.NODE_ENV !== 'production') {
18 |   middleware.push(createLogger());
19 | }
20 | 
21 | const store = createStore(
22 |   reducer,
23 |   applyMiddleware(thunkMiddleware, ...middleware),
24 | )
25 | store.dispatch(getAllAccounts())
26 | store.dispatch(getCryptos())
27 | store.dispatch(fetchTransactions())
28 | 
29 | render(
30 |   <Provider store={store}>
31 |     <Router history={browserHistory}>
32 |       <Route path="/" component={App}>
33 |         <Route path="yaee" component={YAEEContainer} />
34 |       </Route>
35 |     </Router>
36 |   </Provider>,
37 |   document.getElementById('root')
38 | )
39 | 


--------------------------------------------------------------------------------
/src/middleware/crypto.js:
--------------------------------------------------------------------------------
1 | import _cryptos from './cryptos.json'
2 | 
3 | const TIMEOUT = 100
4 | 
5 | export default {
6 |   getCryptos: (cb, timeout) => setTimeout(() => cb(_cryptos), timeout || TIMEOUT),
7 | }
8 | 


--------------------------------------------------------------------------------
/src/middleware/cryptos.json:
--------------------------------------------------------------------------------
1 | [
2 |   {"id": 1, "name": "ether", "symbol": "ETH"},
3 |   {"id": 2, "name": "coin", "symbol": "META"}
4 | ]
5 | 


--------------------------------------------------------------------------------
/src/middleware/ethereum.js:
--------------------------------------------------------------------------------
 1 | /**
 2 |  * Ethereum service API
 3 |  */
 4 | import Web3 from 'web3'
 5 | import { getBalance, sendCoin } from './metacoin'
 6 | 
 7 | const web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'))
 8 | 
 9 | const CADcoin = 68
10 | 
11 | export default {
12 |   getAccounts: (cb) => {
13 |     web3.eth.getAccounts(async function(error, addresses) {
14 |       let _accounts = [];
15 | 
16 |       for (var i = 0; i < addresses.length; i++) {
17 |         let eth = web3.fromWei(web3.eth.getBalance(addresses[i]), 'ether')
18 |         _accounts.push({
19 |           address: addresses[i],
20 |           balance: eth,
21 |           cadCoin: eth * CADcoin,
22 |           meta: await getBalance(addresses[i])
23 |         })
24 |       }
25 |       cb(_accounts);
26 |     })
27 |   },
28 |   transfer: (transaction) => {
29 | 
30 |     if (transaction.crypto === 'ETH') {
31 |       const amount = web3.toWei(transaction.amount, "ether")
32 | 
33 |       return web3.eth.sendTransaction({from:transaction.from, to:transaction.to, value: amount})
34 |     } else {
35 |       return sendCoin(transaction)
36 |     }
37 |   }
38 | 
39 | }
40 | 


--------------------------------------------------------------------------------
/src/middleware/metacoin.js:
--------------------------------------------------------------------------------
 1 | import Web3 from 'web3'
 2 | import { default as contract } from 'truffle-contract'
 3 | // Import our contract artifacts and turn them into usable abstractions.
 4 | import metacoin_artifacts from '../../build/contracts/MetaCoin.json'
 5 | 
 6 | var web3 = new Web3(new Web3.providers.HttpProvider("http://localhost:8545"));
 7 | 
 8 | // MetaCoin is our usable abstraction, which we'll use through the code below.
 9 | var MetaCoin = contract(metacoin_artifacts);
10 | 
11 | // Bootstrap the MetaCoin abstraction for Use.
12 | MetaCoin.setProvider(web3.currentProvider);
13 | 
14 | export const sendCoin = async (transaction) => {
15 | 
16 |   // let result = MetaCoin.deployed().then(function(instance) {
17 |   //    return instance.sendCoin(transaction.to, transaction.amount, {from: transaction.from});
18 |   // })
19 |   let meta = await MetaCoin.deployed()
20 |   let result = await meta.sendCoin(transaction.to, transaction.amount, {from: transaction.from});
21 | 
22 |   console.log(`result: ${result}`)
23 |   return result
24 | 
25 | }
26 | 
27 | export const getBalance = async (address) => {
28 |   try {
29 |     let meta = await MetaCoin.deployed()
30 |     let balance = await meta.getBalance.call(address)
31 | 
32 |     return balance.toNumber()
33 |   } catch (err) {
34 |     return 'Not Deployed'
35 |   }
36 | }
37 | 


--------------------------------------------------------------------------------
/src/reducers/accounts.js:
--------------------------------------------------------------------------------
 1 | import { combineReducers } from 'redux'
 2 | import deepfreeze from 'deep-freeze'
 3 | import expect from 'expect'
 4 | 
 5 | export const RECEIVE_ACCOUNTS = 'RECEIVE_ACCOUNTS'
 6 | export const ADD_ACCOUNT = 'ADD_ACCOUNT'
 7 | 
 8 | const accounts = (state = {}, action) => {
 9 |   switch (action.type) {
10 |     case ADD_ACCOUNT:
11 |       return {
12 |         ...state,
13 |         accounts: action.accounts
14 |       }
15 |     default:
16 |       return state
17 |   }
18 | }
19 | 
20 | const byAddress = (state = {}, action) => {
21 |   switch (action.type) {
22 |     case RECEIVE_ACCOUNTS:
23 |       return {
24 |         ...state,
25 |         ...action.accounts.reduce((obj, account) => {
26 |           obj[account.address] = account
27 |           return obj
28 |         }, {})
29 |       }
30 |       default:
31 |         const { accountAddress } = action
32 |         if (accountAddress) {
33 |           return {
34 |             ...state,
35 |             [accountAddress]: accounts(state[accountAddress], action)
36 |           }
37 |         }
38 |         return state
39 |   }
40 | }
41 | 
42 | const allAccounts = (state = [], action) => {
43 |   switch (action.type) {
44 |     case RECEIVE_ACCOUNTS:
45 |       return action.accounts.map(account => account.address)
46 |     default:
47 |       return state
48 |   }
49 | }
50 | 
51 | export default combineReducers({
52 |   byAddress,
53 |   allAccounts
54 | })
55 | 
56 | export const getAccount = (state, address) =>
57 |   state.byAddress[address]
58 | 
59 | export const getAllAccounts = state =>
60 |   state.allAccounts.map(address => getAccount(state, address))
61 | 
62 | 
63 | const testAccounts = () => {
64 |   const stateBefore = [];
65 |   const action = {
66 |     type: RECEIVE_ACCOUNTS,
67 |     accounts: [
68 |       { address: 'abc', balance: 100}
69 |     ]
70 |   }
71 |   const stateAfter = {
72 |       abc: { address: 'abc', balance: 100}
73 |   };
74 | 
75 |   deepfreeze(stateBefore);
76 |   deepfreeze(action);
77 |   // expect(
78 |   //   accounts(stateBefore, action)
79 |   // ).toEqual(stateAfter);
80 | 
81 |   expect(
82 |     byAddress(stateBefore, action)
83 |   ).toEqual(stateAfter);
84 | };
85 | 
86 | testAccounts();
87 | console.log('All tests passed');
88 | 


--------------------------------------------------------------------------------
/src/reducers/cryptos.js:
--------------------------------------------------------------------------------
 1 | import { combineReducers } from 'redux'
 2 | 
 3 | export const RECEIVE_CRYPTOS = 'RECEIVE_CRYPTOS'
 4 | 
 5 | const byId = (state = {}, action) => {
 6 |   //debugger;
 7 |   switch (action.type) {
 8 |     case RECEIVE_CRYPTOS:
 9 |       return {
10 |         ...state,
11 |         ...action.cryptos.reduce((obj, crypto) => {
12 |           obj[crypto.id] = crypto
13 |           return obj
14 |         }, {})
15 |       }
16 |       default:
17 |         return state
18 |   }
19 | }
20 | 
21 | const allCryptos = (state = [], action) => {
22 |   //debugger;
23 |   switch (action.type) {
24 |     case RECEIVE_CRYPTOS:
25 |       return action.cryptos.map(crypto => crypto.id)
26 |     default:
27 |       return state
28 |   }
29 | }
30 | 
31 | export const getCryptoById = (state, id) =>
32 |   state.byId[id]
33 | 
34 | export const getSupportedCryptos = state =>
35 |   state.allCryptos.map(id => getCryptoById(state, id))
36 | 
37 | export default combineReducers({
38 |   byId,
39 |   allCryptos
40 | })
41 | 


--------------------------------------------------------------------------------
/src/reducers/index.js:
--------------------------------------------------------------------------------
1 | import { combineReducers } from 'redux'
2 | 
3 | import accounts from './accounts'
4 | import cryptos from './cryptos'
5 | import transfer from './transfer'
6 | import transactions from './transactions'
7 | 
8 | export default combineReducers({ accounts, transactions, transfer, cryptos })
9 | 


--------------------------------------------------------------------------------
/src/reducers/transactions.js:
--------------------------------------------------------------------------------
 1 | import Web3 from 'web3'
 2 | 
 3 | export const SHOW_TRANSACTIONS = 'SHOW_TRANSACTIONS'
 4 | export const ADD_TRANSACTION = 'ADD_TRANSACTION'
 5 | 
 6 | const web3 = new Web3(new Web3.providers.HttpProvider('http://localhost:8545'))
 7 | 
 8 | const transaction = (state, action) => {
 9 |   switch (action.type) {
10 |     case ADD_TRANSACTION:
11 |       return {
12 |         blockHash: action.transaction.blockHash,
13 |         blockNumber: action.transaction.blockNumber,
14 |         hash: action.transaction.hash,
15 |         from: action.transaction.from,
16 |         to: action.transaction.to,
17 |         nonce: action.transaction.nonce,
18 |         gasUsed: action.transaction.receipt.gasUsed,
19 |         gasPrice: action.transaction.gasPrice,
20 |         cost: action.transaction.receipt.gasUsed * action.transaction.gasPrice.toNumber(),
21 |         costEth: web3.fromWei(action.transaction.receipt.gasUsed * action.transaction.gasPrice.toNumber(), 'ether'),
22 |         costCAD: web3.fromWei(action.transaction.receipt.gasUsed * action.transaction.gasPrice.toNumber(), 'ether') * 68
23 |       }
24 |     default:
25 |       return state
26 |   }
27 | }
28 | 
29 | const transactions = (state = [], action) => {
30 |   switch (action.type) {
31 |     case ADD_TRANSACTION:
32 |       return [
33 |         transaction(undefined, action),
34 |           ...state
35 |         ]
36 |     default:
37 |       return state
38 |   }
39 | }
40 | 
41 | export default transactions
42 | 


--------------------------------------------------------------------------------
/src/reducers/transfer.js:
--------------------------------------------------------------------------------
 1 | import { combineReducers } from 'redux'
 2 | 
 3 | export const SELECT_CRYPTO = 'SELECT_CRYPTO'
 4 | export const SELECT_FROM_ADDRESS = 'SELECT_FROM_ADDRESS'
 5 | export const SELECT_TO_ADDRESS = 'SELECT_TO_ADDRESS'
 6 | export const ENTER_AMOUNT = 'ENTER_AMOUNT'
 7 | 
 8 | const detail = (state = {}, action) => {
 9 |   switch (action.type) {
10 |     case SELECT_FROM_ADDRESS:
11 |       console.log(`reducer: SELECT_FROM_ADDRESS ${action.fromAddress}`)
12 |       return {
13 |         ...state,
14 |         from: action.address
15 |       }
16 |     case SELECT_TO_ADDRESS:
17 |       return {
18 |         ...state,
19 |         to: action.address
20 |       }
21 |     case SELECT_CRYPTO:
22 |       return {
23 |         ...state,
24 |         crypto: action.crypto
25 |       }
26 |     case ENTER_AMOUNT:
27 |       return {
28 |         ...state,
29 |         amount: action.amount
30 |       }
31 |     default:
32 |       return state
33 |   }
34 | }
35 | 
36 | export default combineReducers({
37 |   detail
38 | })
39 | 


--------------------------------------------------------------------------------
/test/SimpleWalletTest.js:
--------------------------------------------------------------------------------
 1 | contract('SimpleWallet', function(accounts) {
 2 |   it('the owner is allowed to send funds', function() {
 3 |     var wallet = SimpleWallet.deployed()
 4 |     return wallet.isAllowedToSend.call(accounts[0]).then(function(isAllowed) {
 5 |       assert.equal(isAllowed, true, 'the owner should have been allowed to send funds');
 6 |     })
 7 |   });
 8 | 
 9 |   it('the other account should not be allowed to send funds', function() {
10 |     var wallet = SimpleWallet.deployed();
11 |     return wallet.isAllowedToSend.call(accounts[2]).then(function(isAllowed) {
12 |       assert.equal(isAllowed, false, 'the other account was allowed');
13 |     })
14 |   });
15 | 
16 |   it('adding accounts to the allowed list', function() {
17 |     var wallet = SimpleWallet.deployed();
18 | 
19 |     return wallet.isAllowedToSend.call(accounts[1]).then(function(isAllowed) {
20 |       assert.equal(isAllowed, false, 'the other account was allowed');
21 |     }).then(function() {
22 |       return wallet.allowAddressToSendMoney(accounts[1]);
23 |     }).then(function() {
24 |       return wallet.isAllowedToSend.call(accounts[1]);
25 |     }).then(function(isAllowed) {
26 |       assert.equal(isAllowed, true, 'the other account was not allowed');
27 |     }).then(function() {
28 |       return wallet.disallowAddressToSendMoney(accounts[1]);
29 |     }).then(function() {
30 |       return wallet.isAllowedToSend.call(accounts[1]);
31 |     }).then(function(isAllowed) {
32 |       assert.equal(isAllowed, false, 'the account was allowed');
33 |     })
34 |   });
35 | 
36 |   it('should check Deposit events', function(done) {
37 |       var wallet = SimpleWallet.deployed();
38 | 
39 |       var event = wallet.allEvents();
40 |       event.watch(function(error, result) {
41 |         if (error) {
42 |           console.err(error);
43 |         } else {
44 |           // now we'll check that the events are correctly
45 |           assert.equal(result.event, "Deposit");
46 |           assert.equal(web3.fromWei(result.args.amount.valueOf(), 'ether'), 1);
47 |           assert.equal(result.args._sender.valueOf(), web3.eth.accounts[0]);
48 |           event.stopWatching();
49 |           done();
50 |         }
51 |       });
52 |       // send ether
53 |       web3.eth.sendTransaction({from: web3.eth.accounts[0], to: wallet.address, value: web3.toWei(1, 'ether')});
54 |     });
55 | 
56 |     it('should check not allowed Deposit events', function(done) {
57 |       var wallet = SimpleWallet.deployed();
58 | 
59 |       // send ether
60 |       web3.eth.sendTransaction({from: web3.eth.accounts[1], to: wallet.address, value: web3.toWei(1, 'ether')}, function(error, result) {
61 |         if (error) {
62 |           done();
63 |         } else {
64 |           done(result);
65 |         }
66 |       });
67 | 
68 |     });
69 | 
70 | });
71 | 


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/test/TestMetacoin.sol:
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 1 | pragma solidity ^0.4.2;
 2 | 
 3 | import "truffle/Assert.sol";
 4 | import "truffle/DeployedAddresses.sol";
 5 | import "../contracts/MetaCoin.sol";
 6 | 
 7 | contract TestMetacoin {
 8 | 
 9 |   function testInitialBalanceUsingDeployedContract() {
10 |     MetaCoin meta = MetaCoin(DeployedAddresses.MetaCoin());
11 | 
12 |     uint expected = 10000;
13 | 
14 |     Assert.equal(meta.getBalance(tx.origin), expected, "Owner should have 10000 MetaCoin initially");
15 |   }
16 | 
17 |   function testInitialBalanceWithNewMetaCoin() {
18 |     MetaCoin meta = new MetaCoin();
19 | 
20 |     uint expected = 10000;
21 | 
22 |     Assert.equal(meta.getBalance(tx.origin), expected, "Owner should have 10000 MetaCoin initially");
23 |   }
24 | 
25 | }
26 | 


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/test/metacoin.js:
--------------------------------------------------------------------------------
 1 | var MetaCoin = artifacts.require("./MetaCoin.sol");
 2 | 
 3 | contract('MetaCoin', function(accounts) {
 4 |   it("should put 10000 MetaCoin in the first account", function() {
 5 |     return MetaCoin.deployed().then(function(instance) {
 6 |       return instance.getBalance.call(accounts[0]);
 7 |     }).then(function(balance) {
 8 |       assert.equal(balance.valueOf(), 10000, "10000 wasn't in the first account");
 9 |     });
10 |   });
11 |   it("should call a function that depends on a linked library", function() {
12 |     var meta;
13 |     var metaCoinBalance;
14 |     var metaCoinEthBalance;
15 | 
16 |     return MetaCoin.deployed().then(function(instance) {
17 |       meta = instance;
18 |       return meta.getBalance.call(accounts[0]);
19 |     }).then(function(outCoinBalance) {
20 |       metaCoinBalance = outCoinBalance.toNumber();
21 |       return meta.getBalanceInEth.call(accounts[0]);
22 |     }).then(function(outCoinBalanceEth) {
23 |       metaCoinEthBalance = outCoinBalanceEth.toNumber();
24 |     }).then(function() {
25 |       assert.equal(metaCoinEthBalance, 2 * metaCoinBalance, "Library function returned unexpected function, linkage may be broken");
26 |     });
27 |   });
28 |   it("should send coin correctly", function() {
29 |     var meta;
30 | 
31 |     // Get initial balances of first and second account.
32 |     var account_one = accounts[0];
33 |     var account_two = accounts[1];
34 | 
35 |     var account_one_starting_balance;
36 |     var account_two_starting_balance;
37 |     var account_one_ending_balance;
38 |     var account_two_ending_balance;
39 | 
40 |     var amount = 10;
41 | 
42 |     return MetaCoin.deployed().then(function(instance) {
43 |       meta = instance;
44 |       return meta.getBalance.call(account_one);
45 |     }).then(function(balance) {
46 |       account_one_starting_balance = balance.toNumber();
47 |       return meta.getBalance.call(account_two);
48 |     }).then(function(balance) {
49 |       account_two_starting_balance = balance.toNumber();
50 |       return meta.sendCoin(account_two, amount, {from: account_one});
51 |     }).then(function() {
52 |       return meta.getBalance.call(account_one);
53 |     }).then(function(balance) {
54 |       account_one_ending_balance = balance.toNumber();
55 |       return meta.getBalance.call(account_two);
56 |     }).then(function(balance) {
57 |       account_two_ending_balance = balance.toNumber();
58 | 
59 |       assert.equal(account_one_ending_balance, account_one_starting_balance - amount, "Amount wasn't correctly taken from the sender");
60 |       assert.equal(account_two_ending_balance, account_two_starting_balance + amount, "Amount wasn't correctly sent to the receiver");
61 |     });
62 |   });
63 | });
64 | 


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/truffle.js:
--------------------------------------------------------------------------------
 1 | // Allows us to use ES6 in our migrations and tests.
 2 | require('babel-register')
 3 | 
 4 | module.exports = {
 5 |   networks: {
 6 |     development: {
 7 |       host: 'localhost',
 8 |       port: 8545,
 9 |       network_id: '*' // Match any network id
10 |     }
11 |   }
12 | }
13 | 


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