webpack.config.js

var path = require('path');
const webpack = require('webpack');
const MiniCssExtractPlugin = require("mini-css-extract-plugin");

module.exports = {
  entry: './src/style.js',
  mode: 'production',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'index.js'
  },
  resolve: {
    extensions: ['.js', '.jsx', '.css', '.scss']
  },
  stats: {
    colors: true,
    reasons: true,
    chunks: true
  },
  module: {
    rules: [
      /* {
        test: /\.js$/,
        include: path.resolve(__dirname, 'src'),
        exclude: /(node_modules|build|stories|lib|demo|test)/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-react', '@babel/preset-env']
          }
        }
      }, */
      {
        test: /\.scss$/,
        resolve: { extensions: [".scss"] },
        use: [
          'style-loader',
          MiniCssExtractPlugin.loader,
          'css-loader',
          'sass-loader',
        ]
      },
    ]
  },
  plugins: [
    new webpack.NamedModulesPlugin(),
    new MiniCssExtractPlugin({
      filename: 'style.css'
    })
  ],
  externals: {
    'react': 'commonjs react'
  }
};