Revert "ES5 transpiling"

Gemfile

@@ -24,7 +24,7 @@ gem "cells-haml"
 group :development, :test do
   gem 'rspec-rails', '~> 3.8'
   gem 'capybara'
-  gem 'webpacker', '~> 4.0'
+  gem 'webpacker', '~> 3.5'
   gem 'sqlite3', '~> 1.3.13'
   gem 'selenium-webdriver'
   gem 'poltergeist'

Gemfile.lock

@@ -84,7 +84,7 @@ GEM
     concurrent-ruby (1.1.5)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
-    crass (1.0.5)
+    crass (1.0.4)
     declarative (0.0.10)
     declarative-builder (0.1.0)
       declarative-option (< 0.2.0)
@@ -97,7 +97,7 @@ GEM
       representable (>= 2.4.0, <= 3.1.0)
       uber (< 0.2.0)
     docile (1.3.1)
-    erubi (1.9.0)
+    erubi (1.8.0)
     ffi (1.9.25)
     generator_spec (0.9.4)
       activesupport (>= 3.0.0)
@@ -108,10 +108,10 @@ GEM
       temple (>= 0.8.0)
       tilt
     hashdiff (0.3.8)
-    i18n (1.7.0)
+    i18n (1.6.0)
       concurrent-ruby (~> 1.0)
     json (2.1.0)
-    loofah (2.3.1)
+    loofah (2.2.3)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -122,9 +122,9 @@ GEM
     mimemagic (0.3.3)
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
-    minitest (5.13.0)
+    minitest (5.11.3)
     nio4r (2.5.2)
-    nokogiri (1.10.5)
+    nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
     pipetree (0.1.1)
     poltergeist (1.18.1)
@@ -154,15 +154,15 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.3.0)
-      loofah (~> 2.3)
+    rails-html-sanitizer (1.0.4)
+      loofah (~> 2.2, >= 2.2.2)
     railties (5.2.3)
       actionpack (= 5.2.3)
       activesupport (= 5.2.3)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.19.0, < 2.0)
-    rake (13.0.0)
+    rake (12.3.3)
     reform (2.2.4)
       disposable (>= 0.4.1)
       representable (>= 2.4.0, < 3.1.0)
@@ -239,7 +239,7 @@ GEM
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff
-    webpacker (4.0.7)
+    webpacker (3.5.5)
       activesupport (>= 4.2)
       rack-proxy (>= 0.6.1)
       railties (>= 4.2)
@@ -270,7 +270,7 @@ DEPENDENCIES
   trailblazer-rails
   webdrivers (~> 4.1)
   webmock
-  webpacker (~> 4.0)
+  webpacker (~> 3.5)
 
 BUNDLED WITH
    1.17.3

builder/.babelrc

@@ -1,20 +1,19 @@
 {
   "presets": [
-    [
-      "@babel/preset-env",
-      {
-        "modules": "false",
-        "targets": "> 1%, not dead",
-        "useBuiltIns": "entry",
-        "corejs": {
-          "version": 3
-        },
-        "debug": true
-      }
-    ]
+    ["env", {
+      "modules": false,
+      "forceAllTransforms": true,
+      "targets": {
+        "browsers": "> 1%",
+        "uglify": true
+      },
+      "useBuiltIns": true
+    }]
   ],
+
   "plugins": [
-    "@babel/syntax-dynamic-import",
-    ["@babel/plugin-proposal-class-properties", { "loose": true }]
+    "syntax-dynamic-import",
+    "transform-object-rest-spread",
+    ["transform-class-properties", { "spec": true }]
   ]
 }

builder/app/javascript/packs/application.js

@@ -7,13 +7,18 @@
 // To reference this file, add <%= javascript_pack_tag 'application' %> to the appropriate
 // layout file, like app/views/layouts/application.html.erb
 
-import 'core-js';
-import Vue from "vue/dist/vue.esm";
-import Vuex from "vuex";
-import axios from "axios";
-import matestackEventHub from "js/event-hub";
-import componentMixin from "component/component";
+import Vue from 'vue/dist/vue.esm'
+import Vuex from 'vuex'
+import axios from 'axios'
+import matestackEventHub from 'js/event-hub'
+import componentMixin from 'component/component'
 
-import matestackUiCore from "js/core";
+import matestackUiCore from 'js/core'
 
-export { Vue, Vuex, axios, matestackEventHub, componentMixin };
+export {
+  Vue,
+  Vuex,
+  axios,
+  matestackEventHub,
+  componentMixin
+}

builder/package.json

@@ -2,14 +2,10 @@
   "name": "builder",
   "private": true,
   "dependencies": {
-    "@rails/webpacker": "4.0.7",
-    "core-js": "3"
+    "@rails/webpacker": "3.5"
   },
   "devDependencies": {
-    "@babel/cli": "^7.6.4",
-    "@babel/core": "^7.6.4",
-    "@babel/plugin-proposal-class-properties": "^7.5.5",
-    "@babel/preset-env": "^7.6.3",
+    "babel-preset-es2015": "^6.24.1",
     "webpack-dev-server": "3.1.11",
     "webpack-merge": "4.1.4"
   }