10-开发环境配置（复习）

/*
  开发环境配置：能让代码运行
    运行项目指令：
      webpack 会将打包结果输出出去
      npx webpack-dev-server 只会在内存中编译打包，没有输出
*/

const { resolve } = require('path')

const htmlWebpackPlugins = require('html-webpack-plugin')

module.exports = {
  entry: './src/js/index.js',
  output: {
    filename: 'built.js',
    path: resolve(__dirname, 'build'),
  },
  module: {
    rules: [
      // loader的配置
      {
        // 处理css资源
        test: /\.css$/,
        use: ['style-loader', 'css-loader']
      },
      {
        // 处理less资源
        test: /\.less$/,
        use: ['style-loader', 'css-loader', 'less-loader']
      },
      {
        // 处理图片资源
        test: /\.(jpg|png|gif)$/,
        loader: 'url-loader',
        options: {
          name: '[hash:10].[ext]',
          limit: 8 * 1024,
          // 关闭es6模块化
          esModule: false,
          outputPath:'imgs'
        }
      },
      {
        // 处理html中img资源
        test: /\.html/,
        loader:'html-loader'
      },
      // 处理其他资源
      {
        exclude: /\.(html|css|js|less|jpg|png|gif)/,
        loader:'file-loader',
        options:{
          name: '[hash:10].[ext]',
          outputPath:'media'
        }
      }
    ]
  },
  plugins: [
    // plugins的配置
    new htmlWebpackPlugins({
      template: resolve(__dirname, 'src/index.html')
    })
  ],
  mode: 'development',
  devServer: {
    contentBase:resolve(__dirname, 'build'),
    compress:true,
    port:3000,
    open: true
  }
}