npm and error messages

node_modules/regenerator-transform/src/index.js

@@ -0,0 +1,28 @@
+/**
+ * Copyright (c) 2014, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * https://raw.github.com/facebook/regenerator/master/LICENSE file. An
+ * additional grant of patent rights can be found in the PATENTS file in
+ * the same directory.
+ */
+
+export default function (context) {
+  const plugin = {
+    visitor: require("./visit").visitor,
+  };
+
+  // Some presets manually call child presets, but fail to pass along the
+  // context object. Out of an abundance of caution, we verify that it
+  // exists first to avoid causing unnecessary breaking changes.
+  const version = context && context.version;
+
+  // The "name" property is not allowed in older versions of Babel (6.x)
+  // and will cause the plugin validator to throw an exception.
+  if (version && parseInt(version, 10) >= 7) {
+    plugin.name = "regenerator-transform";
+  }
+
+  return plugin;
+}