webpack.config.js

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

module.exports = {
  entry: './src/EditorWrapper.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'index.js',
    libraryTarget: 'umd',
    globalObject: 'this',
  },
  externals: {
    react: 'react',
    'react-dom': 'react-dom',
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
        },
      },
      {
        test: /\.css$/,
        use: [
          MiniCssExtractPlugin.loader,
          'css-loader',
        ],
      },
    ],
  },
  plugins: [
    new MiniCssExtractPlugin({
      filename: 'styles.css',
    }),
  ],
  resolve: {
    extensions: ['.js', '.jsx', '.css'],
    fallback: {
      "zlib": require.resolve("browserify-zlib"),
      "stream": require.resolve("stream-browserify"),
      "http": require.resolve("stream-http"),
      "https": require.resolve("https-browserify"),
      "crypto": require.resolve("crypto-browserify"),
      "path": require.resolve("path-browserify"),
      "fs": false
    }
  },
};