update webpack build

Author: george

README.md

@@ -13,6 +13,8 @@ What does Undernet include?
 - Interactive components powered by JavaScript.
 - Highly brandable and extendable.
 
+The main site, https://undernet.io, is deployed using [Netlify](https://www.netlify.com/).
+
 ## Install via npm or yarn
 
 ```sh

config/webpack.prod.js

@@ -1,21 +1,12 @@
 const merge = require("webpack-merge")
 const CompressionPlugin = require("compression-webpack-plugin")
 const common = require("../webpack.common.js")
-const CleanWebpackPlugin = require("clean-webpack-plugin")
-const UglifyJsPlugin = require("uglifyjs-webpack-plugin")
+const { CleanWebpackPlugin } = require("clean-webpack-plugin")
 const OptimizeCSSAssetsPlugin = require("optimize-css-assets-webpack-plugin")
 
 module.exports = merge(common, {
   optimization: {
     splitChunks: { chunks: "all" },
-    minimizer: [
-      new UglifyJsPlugin({
-        exclude: /\/node_modules/,
-        cache: true,
-        parallel: true,
-        sourceMap: false,
-      }),
-    ],
     runtimeChunk: {
       name: "manifest",
     },