fix production "Unexpected token" error

frontend/.babelrc

@@ -44,7 +44,7 @@
     },
     "production": {
       "plugins": [
-        "transform-react-constant-elements"
+        // "transform-react-constant-elements" enable when #5325 is fixed
       ]
     }
   }

frontend/webpack/base.js

@@ -9,8 +9,7 @@ const {
   MODULES,
   FRONTEND,
   UI,
-  STATIC,
-  ESLINT
+  STATIC
 } = paths;
 
 module.exports = {
@@ -39,23 +38,13 @@ module.exports = {
   },
   plugins: [
     plugins['define'](),
-    plugins['shell']()
+    plugins['shell'](),
+    plugins['named-modules'](),
+    plugins['case-sensitive-paths']()
+
   ],
   module: {
     rules: [{
-      test: /js?$/,
-      enforce: 'pre',
-      use: [{
-        loader: 'eslint-loader',
-        options: {
-          configFile: ESLINT
-        }
-      }],
-      include: [
-        FRONTEND,
-        UI
-      ]
-    }, {
       exclude: [
         /\.html$/,
         /\.(js|jsx)$/,

frontend/webpack/development.js

@@ -1,6 +1,13 @@
 // const graphql = require('../../cloudapi-graphql/src/endpoint');
 const plugins = require('./plugins');
 const base = require('./base');
+const paths = require('./paths');
+
+const {
+  FRONTEND,
+  UI,
+  ESLINT
+} = paths;
 
 const devServer = {
   hot: true,
@@ -26,11 +33,25 @@ module.exports = Object.assign(base, {
     'react-dev-utils/webpackHotDevClient',
     base.entry
   ],
+  module: {
+    rules: base.module.rules.concat([{
+      test: /js?$/,
+      enforce: 'pre',
+      use: [{
+        loader: 'eslint-loader',
+        options: {
+          configFile: ESLINT
+        }
+      }],
+      include: [
+        FRONTEND,
+        UI
+      ]
+    }])
+  },
   plugins: base.plugins.concat([
-    plugins['named-modules'](),
     plugins['hot-module-replacement'](),
-    plugins['watch-missing-node-modules'](),
-    plugins['case-sensitive-paths']()
+    plugins['watch-missing-node-modules']()
   ]),
   node: {
     fs: 'empty',

ui/yarn.lock

@@ -1332,8 +1332,8 @@ babel-types@^6.15.0, babel-types@^6.16.0, babel-types@^6.18.0, babel-types@^6.19
     to-fast-properties "^1.0.1"
 
 babylon@^6.1.0, babylon@^6.10.0, babylon@^6.11.0, babylon@^6.12.0, babylon@^6.13.0, babylon@^6.15.0:
-  version "6.15.0"
-  resolved "https://registry.yarnpkg.com/babylon/-/babylon-6.15.0.tgz#ba65cfa1a80e1759b0e89fb562e27dccae70348e"
+  version "6.16.1"
+  resolved "https://registry.yarnpkg.com/babylon/-/babylon-6.16.1.tgz#30c5a22f481978a9e7f8cdfdf496b11d94b404d3"
 
 babylon@~5.8.3:
   version "5.8.38"
@@ -1543,8 +1543,8 @@ caniuse-api@^1.5.2:
     lodash.uniq "^4.3.0"
 
 caniuse-db@^1.0.30000187, caniuse-db@^1.0.30000346, caniuse-db@^1.0.30000624:
-  version "1.0.30000624"
-  resolved "https://registry.yarnpkg.com/caniuse-db/-/caniuse-db-1.0.30000624.tgz#554b87547895e36f5fe128f4b7448a2ea5bf2213"
+  version "1.0.30000626"
+  resolved "https://registry.yarnpkg.com/caniuse-db/-/caniuse-db-1.0.30000626.tgz#44363dc86857efaf758fea9faef6a15ed93d8f33"
 
 capture-stack-trace@^1.0.0:
   version "1.0.0"