webpack.config.js

import path from 'path';
import { fileURLToPath } from 'url';
import nodeExternals from 'webpack-node-externals';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

export default {
  target: 'node',
  mode: 'production',
  entry: './src/index.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'bundle.cjs',
    libraryTarget: 'commonjs2',
  },
  experiments: {
    topLevelAwait: true,
  },
  externals: [nodeExternals()], // excludes node_modules from bundle
  resolve: {
    extensions: ['.js', '.json'],
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            cacheDirectory: true,
          },
        },
      },
    ],
  },
};