webpack.config.js

const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const CopyPlugin = require('copy-webpack-plugin');
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  mode: 'production',
  devtool: 'source-map',
  entry: {
    'shell-ui': ['./src/index.tsx'],
  },
  resolve: {
    extensions: ['.js', '.jsx', '.json', '.ts', '.tsx', '.scss'],
  },
  module: {
    rules: [
      {
        test: /\.(ts|tsx)$/,
        exclude: /node_modules/,
        loader: 'awesome-typescript-loader',
      },
      {
        enforce: 'pre',
        test: /\.js$/,
        loader: 'source-map-loader',
      },
      {
        test: /\.s[ac]ss$/i,
        exclude: /node_modules/,
        use: [MiniCssExtractPlugin.loader, 'css-loader', 'sass-loader'],
      },
    ],
  },
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'js/[name].min.js',
    clean: true,
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: '[name].css',
    }),
    new CopyPlugin({
      patterns: [
        {
          from: path.resolve(__dirname, 'public/'),
          globOptions: {
            ignore: ['**/index.html'],
          },
          to: path.resolve(__dirname, 'dist/'),
        },
      ],
    }),
    new HtmlWebpackPlugin({
      template: path.resolve(__dirname, 'public', 'index.html'),
    }),
  ],
  externals: {
    react: 'React',
    'react-dom': 'ReactDOM',
    '../../example_component/src/ExampleComponent': 'ExampleComponent',
  },
};