從昨天晚上開始認真看 webpack 得教學，花了半天多才漸漸理解如何使用，我果然還是不適合一開始就用官方文件來閱讀，還是找有教學的影片來看比較好吸收。 1.　套件安裝 　⊙　主要套件 : webpack 　⊙　ESLint 檢查: eslint eslint-loader 　⊙　Babel (ECMAScript6 語法轉換) : babel-core babel-loader babel-preset-es2015 　⊙　React 相關套件: react rect-dom jsx-loader eslint-plugin-react babel-preset-react 　packages.json 大致上會如下： 
{
  "name": "sample",
  "version": "1.0.0",
  "description": "",
  "main": "webpack.config.js",
  "dependencies": {
    "jsx-loader": "^0.13.2",
    "webpack": "^1.12.14"
  },
  "devDependencies": {
    "babel-core": "^6.7.4",
    "babel-loader": "^6.2.4",
    "babel-preset-es2015": "^6.6.0",
    "babel-preset-react": "^6.5.0",
    "eslint": "^2.7.0",
    "eslint-loader": "^1.3.0",
    "eslint-plugin-react": "^4.2.3",
    "react": "^0.14.8",
    "react-dom": "^0.14.8"
  },
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC"
}
2. webpack.config.js 設定檔 　⊙　目前就只測試到基本的 eslint 檢查，可用 .jsx 副檔名 
module.exports = {
    entry: ['./assets/jsx/app'],
    output: {
        path: 'public/js/',
        filename: 'bundle.js'
    },
    resolve: {
        extensions: ['', '.js', '.jsx']
    },
    module: {
        preLoaders: [
            {
                test: /\.jsx$/,
                exclude: /node_modules/,
                loader: 'eslint-loader'
            }
        ],
        loaders: [
            {
                test: /\.js|jsx$/,
                exclude: /node_modules/,
                loader: 'babel-loader',
                query:{
                    "presets": ["es2015", "react"]
                }
            }
        ]
    }
}
3. ESLint 設定 　⊙　套件安裝 sudo npm install -g eslint 　⊙　產生基本設定檔，eslint --init，可參考下面回答 ? How would you like to configure ESLint? Answer questions about your style ? Are you using ECMAScript 6 features? Yes ? Are you using ES6 modules? Yes ? Where will your code run? Browser ? Do you use CommonJS? Yes ? Do you use JSX? Yes ? Do you use React Yes ? What style of indentation do you use? Spaces ? What quotes do you use for strings? Single ? What line endings do you use? Unix ? Do you require semicolons? Yes ? What format do you want your config file to be in? JSON 　⊙　加上 React 檢查套件 npm install --save-dev eslint-plugin-react 　　　* extends 裡加上 `plugin:react/recommended` ，額外用別人寫好的檢查套件 　　　　　* 可避免 import module 後，出現未使用變數的問題 　　　　　* 若要使用`dangerouslySetInnerHTML`這語法，需在 rules 內加上 `"react/no-danger": 0` 　　　* jQuery 可在 env 內加上來略過錯誤 　　　* 全域變數請另外寫 globals 來略過檢查 
{
    "env": {
        "browser": true,
        "commonjs": true,
        "es6": true,
        "jquery": true
    },
    "extends": ["eslint:recommended", "plugin:react/recommended"],
    "parserOptions": {
        "ecmaFeatures": {
            "experimentalObjectRestSpread": true,
            "jsx": true
        },
        "sourceType": "module"
    },
    "plugins": [
        "react"
    ],
    "rules": {
        "indent": [
            "error",
            4
        ],
        "linebreak-style": [
            "error",
            "unix"
        ],
        "quotes": [
            "error",
            "single"
        ],
        "semi": [
            "error",
            "always"
        ],
        "react/no-danger": 0,
        "no-console": ["error", { "allow": ["log", "warn", "error"] }]
    },
    "globals": {
	    "socket": true,
	    "eventEmitter": true
    }
}