将webpack1升级为webpack2的一些总结

/**
* webpack2配置
*/

var webpack = require('webpack');
var path = require('path');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var OpenBrowserPlugin = require('open-browser-webpack-plugin');

module.exports = {
  devServer: {
    historyApiFallback: true,
    contentBase: "./",
    quiet: false, //控制台中不输出打包的信息
    noInfo: false,
    hot: true, //开启热点
    inline: true, //开启页面自动刷新
    lazy: false, //不启动懒加载
    //progress: true, //显示打包的进度,webpack2中没有该配置项
    watchOptions: {
      aggregateTimeout: 300
    },
    host: 'localhost',
    port: 8088, //设置端口号
    //代理其实很简单的，只要配置这个参数就能够了
    proxy: {

    }
  },
  entry: [
    // 'webpack/hot/dev-server',
    // 'webpack-dev-server/client?http://localhost:8088',webpack2注释
    path.resolve(__dirname, 'src/index.js')
  ],
  output: {
    path: path.join(__dirname, "dist/"),
    filename: 'bundle.js',
    publicPath: '/dist/'
  },
  module: {
    rules: [
      {
        test: /\.js[x]?$/,
        exclude: /node_moudle/,
        include: path.join(__dirname, './src'),
        loader: 'babel-loader',
        options: {
          presets: [
            "es2015",
            "react",
            "stage-2"
          ],
          "plugins": [
            ["import", { "libraryName": "antd", "style": "css" }]
          ]
        }
      },
      {
        test: /\.css$/,
        use: ['style-loader','css-loader']
      },
      {
        test: /\.(png|jpg)$/,
        loader: 'url-loader',
        options: {
          limit: 8129
        }
      },
      {
        test: /\.scss$/,
        use: ['style-loader','css-loader','sass-loader']
      },
    ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      title: 'webpack-demos',
      filename: 'dev.html',
      template: 'index.html',
      inject: 'body',
      minify: false,
      hash: false,
      cache: false,
      showErrors: false
    }),
    new OpenBrowserPlugin({
      url: 'http://localhost:8088'
    }),
    new webpack.DefinePlugin({

    }),
    new webpack.HotModuleReplacementPlugin()
  ],
  resolve: {
    extensions: [".js", ".json"],
    modules: ['node_modules']
  },
  devtool: 'source-map'
}

 

将webpack1升级为webpack2的时候，总结：

• webpack和webpack-dev-server的版本须要更新到@2.x版本
• 2的devServer中配置参数有变更，例如progress被取消
• entry中不须要

  'webpack/hot/dev-server'和'webpack-dev-server/client?http://localhost:8088'

• module.loaders升级为module.rules(虽然前者依旧被保留可用，可是此处遵循2的新特性规范)
• 原query字段被取消，现使用options，而且使用options的地方须要配合使用loader，没有options的地方使用use
• 原先的加载器不强求些“-loader”，如今须要强制加上
• 原先的加载器能够经过“!”级连，如今不能够
• 原先加载器后能够使用“?***”，如今取消，统一使用options
• 原先的resolve.extensions[0]能够为空，现不能够
• resolve.modulesDirectories字段改成resolve.modules字段

 

贴上相同需求下的webpack1的配置

/**
* webpack1配置
*/
var webpack = require('webpack');
var path = require('path');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var OpenBrowserPlugin = require('open-browser-webpack-plugin');

module.exports = {
  devServer: {
    historyApiFallback: true,
    contentBase: "./",
    quiet: false, //控制台中不输出打包的信息
    noInfo: false,
    hot: true, //开启热点
    inline: true, //开启页面自动刷新
    lazy: false, //不启动懒加载
    progress: true, //显示打包的进度
    watchOptions: {
      aggregateTimeout: 300
    },
    host: 'localhost',
    port: 8088, //设置端口号
    //代理其实很简单的，只要配置这个参数就能够了
    proxy: {

    }
  },
  entry: [
    'webpack/hot/dev-server',
    'webpack-dev-server/client?http://localhost:8088',
    path.resolve(__dirname, 'src/index.js')
  ],
  output: {
    path: path.join(__dirname, "dist/"),
    filename: 'bundle.js',
    publicPath: '/dist/'
  },
  module: {
    loaders: [
      {
        test: /\.js[x]?$/,
        exclude: /node_moudle/,
        include: path.join(__dirname, './src'),
        loader: 'babel-loader',
        query: {
          presets: [
            'es2015',
            'react',
            'stage-2'
          ]
        }
      },
      {
        test: /\.css$/,
        loader: 'style-loader!css-loader'
      },
      {
        test: /\.(png|jpg)$/,
        loader: 'url-loader',
        query: {
          limit: 8129
        }
      },
      {
        test: /\.scss$/,
        loader: 'style-loader!css-loader!sass-loader'
      },
    ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      title: 'webpack-demos',
      filename: 'dev.html',
      template: 'index.html',
      inject: 'body',
      minify: false,
      hash: false,
      cache: false,
      showErrors: false
    }),
    new OpenBrowserPlugin({
      url: 'http://localhost:8088'
    }),
    new webpack.DefinePlugin({

    }),
    new webpack.HotModuleReplacementPlugin()
  ],
  resolve: {
    extensions: ['', '.web.js', '.js', '.jsx', '.json'],
    root: [
      path.resolve('./src')
    ],
    modulesDirectories: ['node_modules']
  },
  devtool: 'source-map'
}

 

按需加载的配置

npm install babel-plugin-import --save-dev

"plugins": [ ["import", { "libraryName": "antd", "style": "css" }] ] // style: true的时候加载less