fix(modules): add stylus loader as an option to be uncommented (#3710)

platform/app/.webpack/rules/extractStyleChunks.js

@@ -2,6 +2,20 @@ const ExtractCssChunksPlugin = require('extract-css-chunks-webpack-plugin');
 
 function extractStyleChunks(isProdBuild) {
   return [
+    // If you are using the old stylus, you should uncomment this
+    // {
+    //   test: /\.styl$/,
+    //   use: [
+    //     {
+    //       loader: ExtractCssChunksPlugin.loader,
+    //       options: {
+    //         hot: !isProdBuild,
+    //       },
+    //     },
+    //     { loader: 'css-loader' },
+    //     { loader: 'stylus-loader' },
+    //   ],
+    // },
     {
       test: /\.(sa|sc|c)ss$/,
       use: [