webpack（三）本地服务器环境配置

webpack配置文件

之前是依赖全局环境下的打包过程，下面将 webpack 安装到项目的依赖中，这样就可以使用项目本地版本的 webpack

• 首先创建package.json文件：

npm init

自动生成后如下：

{
  "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"
}

• 安装项目环境

npm install webpack --save-dev //安装
npm uninstall webpack --save-dev //卸载

• 设置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',
    },
};

• 命令后执行webpack完成打包

webpack

打包日志如下

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]

• 设置 package.json scripts

  把下面的内容添加到 package.json

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

然后输入 npm run build 就可以编译了

启动webpack内置服务器环境

使用 webpack-dev-server 开发服务是一个更好的选择。它将在 localhost:8080 启动一个 express 静态资源 web 服务器，并且会以监听模式自动运行 webpack，在浏览器打开 http://localhost:8080/ 或 http://localhost:8080/webpack-dev-server/ 可以浏览项目中的页面和编译后的资源输出，并且通过一个 socket.io 服务实时监听它们的变化并自动刷新页面。
安装

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

启动

webpack-dev-server

日志

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.

然后访问http://localhost:8080就能看到页面打印It works.这样一个简单的本地服务器环境就配置完成了。