add back babel/polyfill since it looks like it's needed

Author: Chris Delaney

config/babel.js

@@ -7,8 +7,6 @@ module.exports = api => {
       [
         "@babel/preset-env",
         {
-          useBuiltIns: "usage",
-          corejs: 3,
           loose: true,
           modules: false,
           targets: {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "quiq-scripts",
-  "version": "1.10.38",
+  "version": "1.10.39",
   "description": "Toolbox for creating front-end apps at quiq",
   "main": "src/index.js",
   "scripts": {
@@ -27,6 +27,7 @@
     "@babel/plugin-proposal-throw-expressions": "^7.2.0",
     "@babel/plugin-syntax-dynamic-import": "^7.2.0",
     "@babel/plugin-syntax-import-meta": "^7.2.0",
+    "@babel/polyfill": "https://nexus.quiq.sh/repository/npm-releases/babel-polyfill/-/babel-polyfill-7.0.0-beta.31.tgz",
     "@babel/preset-env": "^7.3.1",
     "@babel/preset-flow": "^7.0.0",
     "@babel/preset-react": "^7.0.0",