webpack.config.js

const path = require('path');
const ProgressBarPlugin = require('progress-bar-webpack-plugin');

module.exports = {
  resolve: {
    extensions: ['.js', '.jsx', '.ts', '.tsx', '.json']
  },
  plugins: [new ProgressBarPlugin()],
  module: {
    rules: [
      {
        test: /\.[jt]sx?$/,
        include: [path.resolve(__dirname, 'src'), path.resolve(__dirname, 'styleguide')],
        use: [
          {
            loader: 'babel-loader',
            options: {
              presets: ['@babel/preset-env', '@babel/preset-react']
            }
          },
          {
            loader: 'ts-loader',
            options: {
              configFile: require('path').resolve(__dirname, 'tsconfig.json')
            }
          }
        ]
      },
      {
        test: /\.css$/,
        use: ['style-loader', { loader: 'css-loader', options: { modules: true } }]
      },
      {
        test: /\.scss$/,
        use: ['style-loader', 'css-loader', 'sass-loader']
      },
      {
        test: /\.(png|jpg|gif)$/,
        use: [{ loader: 'file-loader', options: { name: '[name].[ext]' } }]
      }
    ]
  }
};