feat(build-config): add CSS optimizer plugin to minify assets

packages/build-config/configs/build.js

@@ -6,6 +6,8 @@ var webpack = require('webpack');
 var StatsWriterPlugin = require('webpack-stats-plugin').StatsWriterPlugin;
 var ServiceWorkerPlugin = require('../plugins/service-worker');
 var MiniCSSExtractPlugin = require('mini-css-extract-plugin');
+var UglifyJSPlugin = require('uglifyjs-webpack-plugin');
+var OptimizeCSSPlugin = require('optimize-css-assets-webpack-plugin');
 
 var hopsConfig = require('hops-config');
 
@@ -55,6 +57,17 @@ module.exports = {
         },
       },
     },
+    minimizer: [
+      new UglifyJSPlugin({
+        cache: true,
+        parallel: true,
+        sourceMap: true,
+        uglifyOptions: {
+          output: { comments: false },
+        },
+      }),
+      new OptimizeCSSPlugin(),
+    ],
   },
   plugins: [
     new StatsWriterPlugin({ fields: null }),

packages/build-config/package.json

@@ -43,13 +43,15 @@
     "lodash.template": "^4.4.0",
     "mini-css-extract-plugin": "^0.3.0",
     "mkdirp": "^0.5.1",
+    "optimize-css-assets-webpack-plugin": "^4.0.0",
     "pkg-dir": "^2.0.0",
     "postcss": "^6.0.16",
     "postcss-cssnext": "^3.0.2",
     "postcss-import": "^11.0.0",
     "postcss-loader": "^2.0.10",
     "steed": "^1.1.3",
     "style-loader": "^0.20.0",
+    "uglifyjs-webpack-plugin": "^1.2.4",
     "url-loader": "^1.0.0",
     "webpack": "^4.3.0",
     "webpack-node-externals": "^1.6.0",

yarn.lock

@@ -2121,7 +2121,7 @@ cssesc@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/cssesc/-/cssesc-0.1.0.tgz#c814903e45623371a0477b40109aaafbeeaddbb4"
 
-cssnano@^3.10.0:
+cssnano@^3.10.0, cssnano@^3.4.0:
   version "3.10.0"
   resolved "https://registry.yarnpkg.com/cssnano/-/cssnano-3.10.0.tgz#4f38f6cea2b9b17fa01490f23f1dc68ea65c1c38"
   dependencies:
@@ -4664,6 +4664,13 @@ kind-of@^6.0.0, kind-of@^6.0.2:
   version "6.0.2"
   resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-6.0.2.tgz#01146b36a6218e64e58f3a8d66de5d7fc6f6d051"
 
+last-call-webpack-plugin@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/last-call-webpack-plugin/-/last-call-webpack-plugin-3.0.0.tgz#9742df0e10e3cf46e5c0381c2de90d3a7a2d7555"
+  dependencies:
+    lodash "^4.17.5"
+    webpack-sources "^1.1.0"
+
 lazy-cache@^1.0.3:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/lazy-cache/-/lazy-cache-1.0.4.tgz#a1d78fc3a50474cb80845d3b3b6e1da49a446e8e"
@@ -5550,6 +5557,13 @@ optimist@^0.6.1:
     minimist "~0.0.1"
     wordwrap "~0.0.2"
 
+optimize-css-assets-webpack-plugin@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/optimize-css-assets-webpack-plugin/-/optimize-css-assets-webpack-plugin-4.0.0.tgz#d5f80041fb1391b358a1f35273c3b53de814e8fe"
+  dependencies:
+    cssnano "^3.4.0"
+    last-call-webpack-plugin "^3.0.0"
+
 optionator@^0.8.1, optionator@^0.8.2:
   version "0.8.2"
   resolved "https://registry.yarnpkg.com/optionator/-/optionator-0.8.2.tgz#364c5e409d3f4d6301d6c0b4c05bba50180aeb64"