Optimizing front-end delivery with Webpack 4 06 May 2018 With the latest major Webpack release (version 4.x), we are at a point where you don’t need a config to get started. It is optimized by default (#0CJS!). So plugins that had to be manually added and configured like CommonsChunkPlugin,UglifyjsWebpackPlugin, etc are automatically instantiated by Webpack under the hood which makes life easier!