Fixes #3329 - Tweak webpack config to share CSS loaders for production builders. Updated production builds to use ExtractTextPlugin so styles are not built into JS.

webpack-dist.config.js

@@ -1,66 +1,25 @@
-var path = require('path')
-var fs = require('fs')
+const path = require("path")
+const fs = require("fs")
 const nodeModules = fs.readdirSync("node_modules").filter(function(x) { return x !== ".bin" })
-var ExtractTextPlugin = require('extract-text-webpack-plugin')
+const styleRules = require("./webpack.dist-style.config.js")
 
-var rules = [
+let rules = [
   { test: /\.(worker\.js)(\?.*)?$/,
     use: [
       {
-        loader: 'worker-loader',
+        loader: "worker-loader",
         options: {
           inline: true,
-          name: '[name].js'
+          name: "[name].js"
         }
       },
-      { loader: 'babel-loader' }
+      { loader: "babel-loader" }
     ]
-  },
-  { test: /\.(css)(\?.*)?$/,
-    use: ExtractTextPlugin.extract({
-      fallback: 'style-loader',
-      use: [
-        'css-loader',
-        'postcss-loader'
-      ]
-    })
-  },
-  { test: /\.(scss)(\?.*)?$/,
-    use: ExtractTextPlugin.extract({
-      fallback: 'style-loader',
-      use: [
-        {
-          loader: 'css-loader',
-          options: { minimize: true }
-        },
-        {
-          loader: 'postcss-loader',
-          options: { sourceMap: true }
-        },
-        { loader: 'sass-loader',
-          options: {
-            outputStyle: 'expanded',
-            sourceMap: true,
-            sourceMapContents: 'true'
-          }
-        }
-      ]
-    })
-  },
-  { test: /\.(less)(\?.*)?$/,
-    use: ExtractTextPlugin.extract({
-      fallback: 'style-loader',
-      use: ['css-loader',
-        {
-          loader: 'postcss-loader',
-        },
-        'less-loader'
-      ]
-    })
   }
 ]
+rules = rules.concat(styleRules)
 
-module.exports = require('./make-webpack-config.js')(rules, {
+module.exports = require("./make-webpack-config.js")(rules, {
   _special: {
     separateStylesheets: true,
     minimize: true,