webpack.config.babel.js

import path from 'path';

import MiniCssExtractPlugin from 'mini-css-extract-plugin';

const webpackConfig = (_env, argv) => {
  const isProduction = argv.mode === 'production';
  const isDevelopment = !isProduction;

  return {
    devtool: isDevelopment && 'cheap-module-source-map',
    entry: './src/index.js',
    output: {
      path: path.resolve(__dirname, 'dist'),
      filename: 'assets/js/[name].[contenthash:8].js',
      publicPath: '/'
    },
    module: {
      rules: [
        {
          test: /\.js?$|.jsx?$|.ts?$|.tsx?$/,
          exclude: /node_modules/,
          use: {
            loader: 'babel-loader',
            options: {
              cacheDirectory: true,
              cacheCompression: false,
              envName: isProduction ? 'production' : 'development'
            }
          }
        },
        {
          test: /\.css$/,
          use: [
            isProduction ? MiniCssExtractPlugin.loader : 'style-loader',
            'css-loader',
            'postcss-loader'
          ]
        },
        {
          test: /\.(png|svg|jpg|jpeg|woff|woff2)$/i,
          use: [
            {
              loader: 'file-loader'
            }
          ]
        }
      ]
    },
    resolve: {
      extensions: ['.js', '.jsx', '.ts', '.tsx']
    },
    plugins: [
      isProduction &&
        new MiniCssExtractPlugin({
          filename: 'assets/css/[name].[contenthash:8].css',
          chunkFilename: 'assets/css/[name].[contenthash:8].chunk.css'
        })
    ].filter(Boolean)
  };
};

export default webpackConfig;