Copy statics off of foreign exports objects when doing an ES6 import

src/babel/transformation/templates/helper-interop-require-wildcard.js

@@ -1,3 +1,16 @@
 (function (obj) {
-  return obj && obj.__esModule ? obj : { default: obj };
+  if (obj && obj.__esModule) {
+    return obj;
+  } else {
+    var hop = Object.prototype.hasOwnProperty;
+    var es_obj = { "default": obj };
+    if (typeof obj === "object" && obj !== null) {
+      for (var key in obj) {
+        if (key !== "default" && hop.call(obj, key)) {
+          es_obj[key] = obj[key];
+        }
+      }
+    }
+    return es_obj;
+  }
 })