webpack.prod.js

const merge = require('webpack-merge')
const common = require('./webpack.common.js')
// const path = require('path')
const webpack = require('webpack')
const UglifyJSPlugin = require('uglifyjs-webpack-plugin')

module.exports = merge(common, {
  mode: 'production',
  devtool: 'source-map',
  optimization: {
    minimizer: [
      new UglifyJSPlugin({
        sourceMap: true,
        uglifyOptions: {
          compress: {
            inline: false
          }
        }
      })
    ],
    runtimeChunk: false,
    splitChunks: {
      cacheGroups: {
        default: false,
        commons: {
          test: /[\\/]node_modules[\\/]/,
          name: 'vendor_app',
          chunks: 'all',
          minChunks: 2
        }
      }
    }
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: JSON.stringify('production')
      }
    })
  ]
})