webpack.prod.js

const merge = require('webpack-merge')
const common = require('./webpack.common.js')
const webpack = require('webpack')
const TerserPlugin = require('terser-webpack-plugin')
const { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer')

module.exports = merge(common, {
  mode: 'production',
  devtool: process.env.DEBUG_PROD === 'true' ? 'source-map' : 'none',
  plugins: [
    new webpack.EnvironmentPlugin({
      NODE_ENV: 'production'
    }),
    new BundleAnalyzerPlugin({
      analyzerMode:
        process.env.OPEN_ANALYZER === 'true' ? 'server' : 'disabled',
      openAnalyzer: process.env.OPEN_ANALYZER === 'true'
    })
  ],
  optimization: {
    minimize: true,
    minimizer: [
      new TerserPlugin({
        parallel: true,
        sourceMap: true,
        cache: true,
        extractComments: false
      })
    ]
  }
})