diff --git a/lib/6to5/util.js b/lib/6to5/util.js
index 58b860135d..ca7d411ddb 100644
--- a/lib/6to5/util.js
+++ b/lib/6to5/util.js
@@ -1,7 +1,7 @@
 var traverse = require("./traverse");
 var astTypes = require("ast-types");
 var recast   = require("recast");
-var acorn    = require("acorn");
+var acorn    = require("acorn-jsx");
 var path     = require("path");
 var util     = require("util");
 var fs       = require("fs");
@@ -24,6 +24,14 @@ exports.ensureBlock = function (node) {
   node.body = b.blockStatement(block);
 };
 
+exports.resolve = function (loc) {
+  try {
+    return require.resolve(loc);
+  } catch (err) {
+    return null;
+  }
+};
+
 exports.list = function (val) {
   return val ? val.split(",") : [];
 };