/**
 * 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) >= 7) {
    plugin.name = "regenerator-transform";
  }

  return plugin;
}

/**
 * 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 version of Babel 6.x and
  // will cause it to throw an exception.
  if (version && !/^6\./.test(version)) {
    plugin.name = "regenerator-transform";
  }

  return plugin;
}

--- 
+++ 
@@ -18,9 +18,9 @@
   // 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) >= 7) {
+  // The "name" property is not allowed in older version of Babel 6.x and
+  // will cause it to throw an exception.
+  if (version && !/^6\./.test(version)) {
     plugin.name = "regenerator-transform";
   }
 
Use parseInt to test Babel major version.
