inherit comments in modules transformer - fixes #280

lib/6to5/transformation/transformers/es6-modules.js

@@ -1,6 +1,12 @@
 var t = require("../../types");
 var _ = require("lodash");
 
+var inheritsComments = function (node, nodes) {
+  if (nodes.length) {
+    t.inheritsComments(nodes[0], node);
+  }
+};
+
 exports.ImportDeclaration = function (node, parent, file) {
   var nodes = [];
 
@@ -12,6 +18,8 @@ exports.ImportDeclaration = function (node, parent, file) {
     file.moduleFormatter.import(node, nodes, parent);
   }
 
+  inheritsComments(node, nodes);
+
   return nodes;
 };
 
@@ -33,5 +41,7 @@ exports.ExportDeclaration = function (node, parent, file) {
     });
   }
 
+  inheritsComments(node, nodes);
+
   return nodes;
 };