v1.10.2

lib/6to5/util.js

@@ -268,12 +268,15 @@ exports.parse = function (opts, code, callback) {
   } catch (err) {
     if (!err._6to5) {
       err._6to5 = true;
-      err.message = opts.filename + ": " + err.message;
+      var message = opts.filename + ": " + err.message;
 
       if (err.loc) {
         var frame = exports.codeFrame(code, err.loc.line, err.loc.column);
-        err.message = err.message + frame;
+        message += frame;
       }
+
+      err.stack = err.stack.replace(err.message, message);
+      err.message = message;
     }
 
     throw err;

package.json

@@ -1,7 +1,7 @@
 {
   "name": "6to5",
   "description": "Turn ES6 code into readable vanilla ES5 with source maps",
-  "version": "1.10.1",
+  "version": "1.10.2",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://github.com/sebmck/6to5",
   "repository": {