webpack.prod.js

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

const common = require('./webpack.common.js');

const config = {
  mode: 'production',
  devtool: 'source-map',
  plugins: [
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('production'),
      'process.env.DEBUG': false,
    }),
    new webpack.LoaderOptionsPlugin({
      minimize: true,
      debug: false,
    }),
    new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
  ],
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        parallel: true,
        sourceMap: true,
      }),
    ],
    usedExports: true,
  },
};

const clientConfig = merge(common.clientConfig, config, {});
const serverConfig = merge(common.serverConfig, config, {});

module.exports = [clientConfig, serverConfig];