webpack.production.config.js

const path = require('path');
const TerserPlugin = require('terser-webpack-plugin');

module.exports = {
  mode: 'production',
  entry: path.resolve(__dirname, 'src/components/SearchField.jsx'),
  output: {
    filename: 'index.min.js',
    path: path.resolve(__dirname, 'dist'),
    library: 'ReactSearch',
    libraryTarget: 'umd',
    globalObject: 'this',
  },
  resolve: {
    extensions: ['.js', '.jsx'],
    modules: [path.resolve(__dirname, './src'), 'node_modules'],
  },
  module: {
    rules: [
      {
        test: /\.jsx$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
        },
      },
    ],
  },
  plugins: [
    new TerserPlugin({
      cache: true,
      parallel: true,
      terserOptions: { ecma: 8 },
    }),
  ],
  externals: {
    // Use external version of React
    react: {
      commonjs: 'react',
      commonjs2: 'react',
      amd: 'react',
      root: 'React',
    },
    'react-dom': {
      commonjs: 'react-dom',
      commonjs2: 'react-dom',
      amd: 'react-dom',
      root: 'ReactDOM',
    },
  },
};