So siehts ganz gut aus !

node_modules/core-js/modules/_hide.js

@@ -0,0 +1,8 @@
+var dP = require('./_object-dp');
+var createDesc = require('./_property-desc');
+module.exports = require('./_descriptors') ? function (object, key, value) {
+  return dP.f(object, key, createDesc(1, value));
+} : function (object, key, value) {
+  object[key] = value;
+  return object;
+};