webpack.config.js

const path = require('path');
const pkg = require('./package.json');

const base = {
  mode: 'production',
  entry: path.resolve(__dirname, 'src', 'cashaddr.js'),
  output: {
    path: path.resolve(__dirname, 'dist'),
    library: 'cashaddr',
    libraryTarget: 'umd',
    globalObject: 'this',
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: [
              ['@babel/preset-env', { targets: 'defaults' }]
            ]
          }
        }
      }
    ]
  }
};

module.exports = [
  Object.assign({}, base, {
    output: Object.assign({}, base.output, {
      filename: 'cashaddrjs-' + pkg.version + '.js',
    }),
    optimization: {
      minimize: false,
    },
  }),
  Object.assign({}, base, {
    output: Object.assign({}, base.output, {
      filename: 'cashaddrjs-' + pkg.version + '.min.js',
    }),
  }),
];