Extract CSS from webpack js

package.json

@@ -17,7 +17,9 @@
     "html-loader": "^0.5.5",
     "html-webpack-plugin": "^3.1.0",
     "jstransformer-markdown-it": "^2.0.0",
+    "mini-css-extract-plugin": "^0.4.0",
     "node-sass": "^4.8.3",
+    "optimize-css-assets-webpack-plugin": "^4.0.0",
     "postcss-loader": "^2.1.3",
     "precss": "^3.1.2",
     "pug": "^2.0.3",

webpack.common.js

@@ -3,6 +3,7 @@ const path = require("path");
 const webpack = require("webpack");
 const HtmlWebpackPlugin = require("html-webpack-plugin");
 const CleanWebpackPlugin = require("clean-webpack-plugin");
+const MiniCssExtractPlugin = require("mini-css-extract-plugin");
 
 const PAGE_DIR = path.resolve(__dirname, "src", "pages");
 
@@ -28,7 +29,8 @@ module.exports = {
         new webpack.ProvidePlugin({
             $: "jquery",
             jQuery: "jquery"
-        })
+        }),
+        new MiniCssExtractPlugin()
     ].concat(pages.map(page => new HtmlWebpackPlugin(page))),
     module: {
         rules: [
@@ -45,7 +47,7 @@ module.exports = {
             {
                 test: /.scss$/,
                 use: [{
-                    loader: "style-loader"
+                    loader: MiniCssExtractPlugin.loader
                 }, {
                     loader: "css-loader"
                 }, {

webpack.prod.js

@@ -1,7 +1,19 @@
 const merge = require("webpack-merge");
 const common = require("./webpack.common.js");
+const UglifyJsPlugin = require("uglifyjs-webpack-plugin");
+const OptimizeCSSAssetsPlugin = require("optimize-css-assets-webpack-plugin");
 
 module.exports = merge(common, {
+    optimization: {
+        minimizer: [
+            new UglifyJsPlugin({
+                cache: true,
+                parallel: true,
+                sourceMap: true
+            }),
+            new OptimizeCSSAssetsPlugin({})
+        ]
+    },
     devtool: "source-map",
     mode: "production"
 });

yarn.lock

@@ -1761,7 +1761,7 @@ 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:
@@ -3499,6 +3499,13 @@ 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"
@@ -3875,6 +3882,13 @@ mimic-response@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/mimic-response/-/mimic-response-1.0.0.tgz#df3d3652a73fded6b9b0b24146e6fd052353458e"
 
+mini-css-extract-plugin@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-0.4.0.tgz#ff3bf08bee96e618e177c16ca6131bfecef707f9"
+  dependencies:
+    loader-utils "^1.1.0"
+    webpack-sources "^1.1.0"
+
 minimalistic-assert@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.0.tgz#702be2dda6b37f4836bcb3f5db56641b64a1d3d3"
@@ -4236,6 +4250,13 @@ onetime@^2.0.0:
   dependencies:
     mimic-fn "^1.0.0"
 
+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"
+
 ora@^0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/ora/-/ora-0.2.3.tgz#37527d220adcd53c39b73571d754156d5db657a4"