webpack config

webpack.config.js

// common
const path = require('path');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const Dotenv = require('dotenv-webpack');

const rootpath = path.resolve(__dirname, '..');
const fontRegex = /.(eot|ttf|woff|otf|woff2)$/;
const imgRegex = /.(png|jpg|gif|svg)$/;
const fileRegex = new RegExp(`(${fontRegex.source})|(${imgRegex.source})`);

module.exports = {
  entry: {
    vendor: ['react', 'react-dom', 'react-router-dom'],
    app: './src/index.js',
  },

  output: {
    path: `${rootpath}/dist`,
    filename: '[name].js',
    chunkFilename: '[name].chunk.js',
  },

  resolve: {
    extensions: ['.mjs', '.js', '.jsx'],
    alias: {
      common: `${rootpath}/src/components/common`,
      routes: `${rootpath}/src/routes`,
      utils: `${rootpath}/src/utils`,
    },
  },

  plugins: [
    new CleanWebpackPlugin([`dist`], {
      root: rootpath,
      exclude: ['manifest.json', 'favicon.ico'],
      verbose: true,
      dry: false,
    }),
    new HtmlWebpackPlugin({
      template: 'src/index.template.html',
    }),
    new Dotenv({
      path: `${rootpath}/.env`,
    }),
  ],

  module: {
    rules: [
      {
        enforce: 'pre',
        test: /\.(js|jsx)$/,
        use: ['eslint-loader'],
        exclude: /node_modules/,
      },
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: ['babel-loader'],
      },
      {
        test: /\.css$/,
        exclude: /\.module\.css$/,
        use: [{loader: 'style-loader'}, {loader: 'css-loader'}],
      },
      {
        test: /\.module\.css$/,
        use: [
          {
            loader: 'style-loader',
          },
          {
            loader: 'css-loader',
            options: {
              camelCase: true,
              modules: true,
              localIdentName: '[local]_[hash:base64:5]',
            },
          },
        ],
      },
      {
        test: fileRegex,
        use: [
          {
            loader: 'file-loader',
            options: {
              outputPath: (url, resourcePath, context) => {
                const dir = 'assets';
                if (imgRegex.test(resourcePath)) {
                  return `${dir}/images/${url}`;
                }
                if (fontRegex.test(resourcePath)) {
                  return `${dir}/fonts/${url}`;
                }
                return `${dir}/${url}`;
              },
            },
          },
        ],
      },
    ],
  },
};

// dev
const path = require('path');
const webpack = require('webpack');
const merge = require('webpack-merge');
const common = require('./webpack.common.js');

module.exports = merge(common, {
  mode: 'development',

  devtool: 'inline-source-map',

  plugins: [
    new webpack.NamedModulesPlugin(),
    new webpack.HotModuleReplacementPlugin(),
  ],

  devServer: {
    contentBase: path.resolve(__dirname, '../', 'dist'),
    host: '0.0.0.0',
    port: 10004,
    public: `0.0.0.0:${10004}`,
    publicPath: '/',
    headers: {'Access-Control-Allow-Origin': '*'},
    stats: {
      all: false,
      assets: true,
      builtAt: true,
      chunks: true,
      colors: true,
      errors: true,
      chunkOrigins: false,
    },
  },
});

// prod
const merge = require('webpack-merge');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
const {BundleAnalyzerPlugin} = require('webpack-bundle-analyzer');
const common = require('./webpack.common.js');

module.exports = merge(common, {
  mode: 'production',
  optimization: {
    minimizer: [
      new UglifyJsPlugin({
        cache: true,
        parallel: true,
        sourceMap: false, // set to true if you want JS source maps
      }),
      new OptimizeCSSAssetsPlugin({}),
    ],
  },
  plugins: [
    new BundleAnalyzerPlugin({
      analyzerMode: 'static',
      generateStatsFile: true,
      reportFilename: 'analysis/report.html',
      openAnalyzer: false,
      statsFilename: 'analysis/stats.json',
    }),
  ],
});