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webpack-develop-startkit

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# webpack-dev-startkit Project

## Table of Contents
1. [依赖框架](#features)
1. [Node版本](#requirements)
1. [安装、启动](#getting-started)
1. [项目结构](#application-structure)
1. [Development](#development)
  1. [Developer Tools](#developer-tools)
  1. [Routing](#routing)
1. [Testing](#testing)
1. [Deployment](#deployment)
1. [Build System](#build-system)
  1. [Configuration](#configuration)
  1. [Globals](#globals)
  1. [Styles](#styles)
  1. [Server](#server)
  1. [Production Optimization](#production-optimization)
1. [Learning Resources](#learning-resources)
1. [FAQ](#troubleshooting)
1. [Thank You](#thank-you)

## Features
* [react](https://github.com/facebook/react)
* [redux](https://github.com/rackt/redux)
* [react-router](https://github.com/rackt/react-router)
* [webpack](https://github.com/webpack/webpack)
* [babel](https://github.com/babel/babel)
* [express](https://github.com/expressjs/express)
* [karma](https://github.com/karma-runner/karma)
* [eslint](http://eslint.org)

## Requirements
* node `^7.6.0`
* yarn `^v0.21.3` or npm `^4.1.2`

## Getting Started

安装、启动、编译项目

### Install

First, clone the project:

```bash
$ git clone git@code.byted.org:cg/os_mobile.git  os_mobile
$ cd os_mobile
```

```bash
$ yarn install    # Install project dependencies
$ yarn start      # Compile and launch (same as `npm start`)
```

While developing, you will probably rely mostly on `npm start`; however, there are additional scripts at your disposal:

|`npm run <script>`|Description|
|------------------|-----------|
|`start`|Serves your app at `localhost:3000`. HMR will be enabled in development.|
|`compile`|Compiles the application to disk (`~/dist` by default).|
|`dev`|Same as `npm start`, but enables nodemon for the server as well.|
|`test`|Runs unit tests with Karma and generates a coverage report.|
|`test:dev`|Runs Karma and watches for changes to re-run tests; does not generate coverage reports.|
|`deploy`|Runs linter, tests, and then, on success, compiles your application to disk.|
|`deploy:dev`|Same as `deploy` but overrides `NODE_ENV` to "development".|
|`deploy:prod`|Same as `deploy` but overrides `NODE_ENV` to "production".|
|`lint`|Lint all `.js` files.|
|`lint:fix`|Lint and fix all `.js` files. [Read more on this](http://eslint.org/docs/user-guide/command-line-interface.html#fix).|

## Application Structure

```
.
├── bin                      # Build/Start scripts
├── config                   # Project and build configurations
├── public                   # Static public assets (not imported anywhere in source code)
├── server                   # Express application that provides webpack middleware
│   └── main.js              # Server application entry point
├── src                      # Application source code
│   ├── index.html           # Main HTML page container for app
│   ├── main.js              # Application bootstrap and rendering
│   ├── components           # Global Reusable Presentational Components
│   ├── containers           # Global Reusable Container Components
│   ├── layouts              # Components that dictate major page structure
│   │   └── CoreLayout.js    # CoreLayout which receives children for each route
│   │   └── CoreLayout.scss  # Styles related to the CoreLayout
│   │   └── index.js         # Main file for layout
│   ├── routes               # Main route definitions and async split points
│   │   ├── index.js         # Bootstrap main application routes with store
│   │   ├── Home             # Fractal route
│   │   │   ├── index.js     # Route definitions and async split points
│   │   │   ├── assets       # Assets required to render components
│   │   │   ├── components   # Presentational React Components
│   │   │   └── routes **    # Fractal sub-routes (** optional)
│   │   └── Counter          # Fractal route
│   │       ├── index.js     # Counter route definition
│   │       ├── container    # Connect components to actions and store
│   │       ├── modules      # Collections of reducers/constants/actions
│   │       └── routes **    # Fractal sub-routes (** optional)
│   ├── store                # Redux-specific pieces
│   │   ├── createStore.js   # Create and instrument redux store
│   │   └── reducers.js      # Reducer registry and injection
│   └── styles               # Application-wide styles (generally settings)
└── tests                    # Unit tests
```

## Development

#### Developer Tools

**We recommend using the [Redux DevTools Chrome Extension](https://chrome.google.com/webstore/detail/redux-devtools/lmhkpmbekcpmknklioeibfkpmmfibljd).**
Using the chrome extension allows your monitors to run on a separate thread and affords better performance and functionality. It comes with several of the most popular monitors, is easy to configure, filters actions, and doesn’t require installing any packages.

However, adding the DevTools components to your project is simple. First, grab the packages from npm:

```bash
npm i --save-dev redux-devtools redux-devtools-log-monitor redux-devtools-dock-monitor
```

Then follow the [manual integration walkthrough](https://github.com/gaearon/redux-devtools/blob/master/docs/Walkthrough.md).

### Routing
We use `react-router` [route definitions](https://github.com/reactjs/react-router/blob/master/docs/API.md#plainroute) (`<route>/index.js`) to define units of logic within our application. See the [application structure](#application-structure) section for more information.

## Testing
To add a unit test, simply create a `.spec.js` file anywhere in `~/tests`. Karma will pick up on these files automatically, and Mocha and Chai will be available within your test without the need to import them. Coverage reports will be compiled to `~/coverage` by default. If you wish to change what reporters are used and where reports are compiled, you can do so by modifying `coverage_reporters` in `~/config/project.config.js`.

## Deployment
Out of the box, this starter kit is deployable by serving the `~/dist` folder generated by `npm run deploy` (make sure to specify your target `NODE_ENV` as well). This project does not concern itself with the details of server-side rendering or API structure, since that demands an opinionated structure that makes it difficult to extend the starter kit. However, if you do need help with more advanced deployment strategies, here are a few tips:

### Static Deployments
If you are serving the application via a web server such as nginx, make sure to direct incoming routes to the root `~/dist/index.html` file and let react-router take care of the rest. If you are unsure of how to do this, you might find [this documentation](https://github.com/reactjs/react-router/blob/master/docs/guides/Histories.md#configuring-your-server) helpful. The Express server that comes with the starter kit is able to be extended to serve as an API or whatever else you need, but that's entirely up to you.

## Build System

### Configuration

Default project configuration can be found in `~/config/project.config.js`. Here you'll be able to redefine your `src` and `dist` directories, adjust compilation settings, tweak your vendor dependencies, and more. For the most part, you should be able to make changes in here **without ever having to touch the actual webpack build configuration**.

If you need environment-specific overrides (useful for dynamically setting API endpoints, for example), you can edit `~/config/environments.config.js` and define overrides on a per-NODE_ENV basis. There are examples for both `development` and `production`, so use those as guidelines. Here are some common configuration options:

|Key|Description|
|---|-----------|
|`dir_src`|application source code base path|
|`dir_dist`|path to build compiled application to|
|`server_host`|hostname for the Express server|
|`server_port`|port for the Express server|
|`compiler_devtool`|what type of source-maps to generate (set to `false`/`null` to disable)|
|`compiler_vendor`|packages to separate into to the vendor bundle|

Webpack is configured to make use of [resolve.root](http://webpack.github.io/docs/configuration.html#resolve-root), which lets you import local packages as if you were traversing from the root of your `~/src` directory. Here's an example:

```js
// current file: ~/src/views/some/nested/View.js
// What used to be this:
import SomeComponent from '../../../components/SomeComponent'

// Can now be this:
import SomeComponent from 'components/SomeComponent' // Hooray!
```

### Globals

These are global variables available to you anywhere in your source code. If you wish to modify them, they can be found as the `globals` key in `~/config/project.config.js`. When adding new globals, make sure you also add them to `~/.eslintrc`.

|Variable|Description|
|---|---|
|`process.env.NODE_ENV`|the active `NODE_ENV` when the build started|
|`__DEV__`|True when `process.env.NODE_ENV` is `development`|
|`__PROD__`|True when `process.env.NODE_ENV` is `production`|
|`__TEST__`|True when `process.env.NODE_ENV` is `test`|

### Styles

Both `.scss` and `.css` file extensions are supported out of the box. After being imported, styles will be processed with [PostCSS](https://github.com/postcss/postcss) for minification and autoprefixing, and will be extracted to a `.css` file during production builds.

### Server

This starter kit comes packaged with an Express server. It's important to note that the sole purpose of this server is to provide `webpack-dev-middleware` and `webpack-hot-middleware` for hot module replacement. Using a custom Express app in place of [webpack-dev-server](https://github.com/webpack/webpack-dev-server) makes it easier to extend the starter kit to include functionality such as API's, universal rendering, and more -- all without bloating the base boilerplate.

### Production Optimization

#### preview

```shell
NODE_ENV=production node ./bin/dev-server.js
```

#### oneline test

```shell
pm2 start app.json --env production
pm2 stop app.json --env production
```

Babel is configured to use [babel-plugin-transform-runtime](https://www.npmjs.com/package/babel-plugin-transform-runtime) so transforms aren't inlined. In production, webpack will extract styles to a `.css` file, minify your JavaScript, and perform additional optimizations such as module deduplication.

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