webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const webpack = require('webpack');
const TerserPlugin = require('terser-webpack-plugin');
const CompressionPlugin = require('compression-webpack-plugin');
const BundleAnalyzerPlugin =
  require('webpack-bundle-analyzer').BundleAnalyzerPlugin;

/**@type {import('webpack').Configuration} */

module.exports = {
  // mode: 'production',
  // cache: false, // 强制全局更新
  cache: {
    type: 'filesystem',
    buildDependencies: {
      config: [__filename],
    },
  },
  optimization: {
    usedExports: true,
    minimizer: [
      new TerserPlugin({
        terserOptions: {
          compress: {
            unused: true,
            drop_console: true,
            drop_debugger: true,
            dead_code: true,
          },
        },
      }),
    ],
  },
  entry: path.resolve(__dirname, 'src/index.js'),
  output: {
    filename: 'bundle.js',
    path: path.resolve(__dirname, 'dist'),
    publicPath: '/',
  },
  module: {
    rules: [
      {
        test: /\.jsx?/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            babelrc: false,
            presets: [
              require.resolve('@babel/preset-react'),
              [require.resolve('@babel/preset-env', { module: false })],
            ],
          },
        },
      },
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader'],
      },
      {
        test: /\.less$/,
        exclude: /node_modules/,
        use: ['style-loader', 'css-loader', 'less-loader'],
      },
      {
        // svg组件化
        test: /\.svg$/,
        use: ['@svgr/webpack'],
      },
      {
        // 图片格式处理
        test: /\.(jpeg|png|gif)$/,
        use: {
          loader: 'file-loader',
          options: {
            // 定义打包后文件的名称；
            // [name]:原文件名，[hash]:hash字符串（如果不定义名称，默认就以hash命名，[ext]:原文件的后缀名）
            name: '[name]_[hash].[ext]',
            outputPath: 'images/', //  定义图片输出的文件夹名（在output.path目录下）
          },
        },
      },
    ],
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: path.resolve(__dirname, 'src/index.html'),
      favicon: path.join(__dirname, 'src/assets/favicon.png'),
      filename: 'index.html',
    }),
    new webpack.HotModuleReplacementPlugin(),
    // new BundleAnalyzerPlugin(), // 开启则分析数据包大小
    new CompressionPlugin({
      algorithm: 'gzip', // 使用gzip压缩
      test: /\.js$|\.html$|\.css$/, // 匹配文件名
      filename: '[path][base].gz', // 压缩后的文件名(保持原文件名，后缀加.gz)
      minRatio: 0.8, // 压缩率小于1才会压缩
      threshold: 10240, // 对超过10k的数据压缩
    }),
  ],
  devServer: {
    port: 3001,
    historyApiFallback: true,
  },
  // devtool: 'source-map',
  devtool: false,
  resolve: {
    extensions: ['.wasm', '.mjs', '.js', '.jsx', '.json'],
  },
};