uglifyjs-webpack-plugin

https://www.webpackjs.com/plugins/uglifyjs-webpack-plugin/

https://www.npmjs.com/package/uglifyjs-webpack-plugin

npm i -D uglifyjs-webpack-plugin

const UglifyJsPlugin = require('uglifyjs-webpack-plugin')
 
module.exports = {
  plugins: [
    new UglifyJsPlugin()
  ]
}