fix: web-ui css were not being minimized

package.json

@@ -107,6 +107,7 @@
     "node-mocks-http": "1.6.7",
     "node-sass": "4.9.0",
     "normalize.css": "8.0.0",
+    "optimize-css-assets-webpack-plugin": "4.0.1",
     "ora": "1.4.0",
     "prop-types": "15.6.1",
     "puppeteer": "1.1.1",

tools/webpack.prod.config.babel.js

@@ -2,6 +2,7 @@ const webpack = require('webpack');
 const HTMLWebpackPlugin = require('html-webpack-plugin');
 const MiniCssExtractPlugin = require('mini-css-extract-plugin');
 const UglifyJsWebpackPlugin = require('uglifyjs-webpack-plugin');
+const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
 const baseConfig = require('./webpack.config');
 const env = require('../src/config/env');
 const _ = require('lodash');
@@ -44,6 +45,7 @@ const prodConf = {
       new UglifyJsWebpackPlugin({
         sourceMap: true,
       }),
+      new OptimizeCSSAssetsPlugin({}),
     ],
   },
 };

yarn.lock

@@ -2802,7 +2802,7 @@ cssesc@^0.1.0:
   version "0.1.0"
   resolved "https://registry.npmjs.org/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.npmjs.org/cssnano/-/cssnano-3.10.0.tgz#4f38f6cea2b9b17fa01490f23f1dc68ea65c1c38"
   dependencies:
@@ -6000,6 +6000,13 @@ known-css-properties@^0.6.0:
   version "0.6.1"
   resolved "https://registry.npmjs.org/known-css-properties/-/known-css-properties-0.6.1.tgz#31b5123ad03d8d1a3f36bd4155459c981173478b"
 
+last-call-webpack-plugin@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.npmjs.org/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.npmjs.org/lazy-cache/-/lazy-cache-1.0.4.tgz#a1d78fc3a50474cb80845d3b3b6e1da49a446e8e"
@@ -7219,6 +7226,13 @@ optimist@^0.6.1:
     minimist "~0.0.1"
     wordwrap "~0.0.2"
 
+optimize-css-assets-webpack-plugin@4.0.1:
+  version "4.0.1"
+  resolved "https://registry.npmjs.org/optimize-css-assets-webpack-plugin/-/optimize-css-assets-webpack-plugin-4.0.1.tgz#48f016766752c7648b92cc1e795b999732bd87a2"
+  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.npmjs.org/optionator/-/optionator-0.8.2.tgz#364c5e409d3f4d6301d6c0b4c05bba50180aeb64"