webpack（三）本地服務器環境配置

webpack配置文件

之前是依賴全局環境下的打包過程，下面將 webpack 安裝到項目的依賴中，這樣就可以使用項目本地版本的 webpack

• 首先創建package.json文件：

npm init

自動生成後如下：

{
  "name": "webpack-package.json",
  "version": "1.0.0",
  "description": "",
  "main": "bundle.js",
  "dependencies": {},
  "devDependencies": {},
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [
    "webpack"
  ],
  "author": "yangll",
  "license": "ISC"
}

• 安裝項目環境

npm install webpack --save-dev //安裝
npm uninstall webpack --save-dev //卸載

• 設置Webpack 的配置文件webpack.config.js

var webpack = require('webpack');
var path = require('path');

module.exports = {
    entry: path.resolve(__dirname, './entry.js'),
    output: {
        path: path.resolve(__dirname, './'),
        filename: 'bundle.js',
    },
};

• 命令後執行webpack完成打包

webpack

打包日誌如下

Hash: 71820986fc674176394e
Version: webpack 1.13.1
Time: 82ms
    Asset     Size  Chunks             Chunk Names
bundle.js  1.42 kB       0  [emitted]  main
   [0] ./entry.js 27 bytes {0} [built]

• 設置 package.json scripts

  把下面的內容添加到 package.json

 "scripts": {
    "build": "webpack"
  }

然後輸入 npm run build 就可以編譯了

啓動webpack內置服務器環境

使用 webpack-dev-server 開發服務是一個更好的選擇。它將在 localhost:8080 啓動一個 express 靜態資源 web 服務器，並且會以監聽模式自動運行 webpack，在瀏覽器打開 http://localhost:8080/ 或 http://localhost:8080/webpack-dev-server/ 可以瀏覽項目中的頁面和編譯後的資源輸出，並且通過一個 socket.io 服務實時監聽它們的變化並自動刷新頁面。
安裝

$ npm install webpack-dev-server --save-dev

啓動

webpack-dev-server

日誌

http://localhost:8080/webpack-dev-server/
webpack result is served from /
content is served from D:\project
Hash: 71820986fc674176394e
Version: webpack 1.13.1
Time: 141ms
    Asset     Size  Chunks             Chunk Names
bundle.js  1.42 kB       0  [emitted]  main
chunk    {0} bundle.js (main) 27 bytes [rendered]
    [0] ./entry.js 27 bytes {0} [built]
webpack: bundle is now VALID.

然後訪問http://localhost:8080就能看到頁面打印It works.這樣一個簡單的本地服務器環境就配置完成了。