webpack.prod.config.js

const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')

module.exports = {
  devtool: 'source-map',
  entry: {
    all: ['@babel/polyfill', __dirname + '/src/demo/js/index.ts'],
  },
  output: {
    path: __dirname + '/docs/demo',
    filename: '[name].js',
    publicPath: '',
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        use: [
          MiniCssExtractPlugin.loader,
          {loader: 'css-loader', options: {sourceMap: true}},
        ],
      },
      {
        test: /\.tsx?$/,
        use: 'ts-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.js$/,
        exclude: /(node_modules)/,
        loader: 'babel-loader',
      },
    ],
  },
  plugins: [
    new MiniCssExtractPlugin({
      // Options similar to the same options in webpackOptions.output
      // both options are optional
      filename: '[name].css',
      chunkFilename: '[id].css',
    }),
    new HtmlWebpackPlugin({
      template: __dirname + '/src/demo/html/index.html',
    }),
  ],
  resolve: {
    extensions: ['.tsx', '.ts', '.js'],
  },
}