Work around an issue in hash-for-dep with nested requires.

lib/utils/babel-enifed-module-formatter.js

@@ -1,5 +1,7 @@
 'use strict';
 
+var path = require('path');
+
 function enifedModuleFormatter(babel) {
   var t = babel.types;
 
@@ -18,7 +20,7 @@ function enifedModuleFormatter(babel) {
 }
 
 enifedModuleFormatter.baseDir = function() {
-  return __dirname;
+  return path.join(__dirname, '..', '..');
 };
 
 module.exports = enifedModuleFormatter;

lib/utils/conditional-use-strict-babel-plugin.js

@@ -1,5 +1,6 @@
 'use strict';
 
+var path = require('path');
 var THIS_BREAK_KEYS = ['FunctionExpression', 'FunctionDeclaration', 'ClassProperty'];
 
 function conditionalUseStrict(babel) {
@@ -55,7 +56,7 @@ function conditionalUseStrict(babel) {
 }
 
 conditionalUseStrict.baseDir = function() {
-  return __dirname;
+  return path.join(__dirname, '..', '..');
 };
 
 module.exports = conditionalUseStrict;