From 33a7c9fc24187e10299dcc0d2378dcdb93887ac7 Mon Sep 17 00:00:00 2001
From: Forbes Lindesay <forbes@lindesay.co.uk>
Date: Tue, 13 Jan 2015 11:10:28 +0000
Subject: [PATCH] Support import and export declarations in acorn/util/walk

---
 util/walk.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/util/walk.js b/util/walk.js
index 117f56f93c..da7ca9f7e1 100644
--- a/util/walk.js
+++ b/util/walk.js
@@ -285,7 +285,15 @@
     c(node.object, st, "Expression");
     if (node.computed) c(node.property, st, "Expression");
   };
-  base.Identifier = base.Literal = base.ExportDeclaration = base.ImportDeclaration = ignore;
+  base.ExportDeclaration = function (node, st, c) {
+    c(node.declaration, st);
+  };
+  base.ImportDeclaration = function (node, st, c) {
+    node.specifiers.forEach(function (specifier) {
+      c(specifier, st);
+    });
+  };
+  base.ImportSpecifier = base.ImportBatchSpecifier = base.Identifier = base.Literal = ignore;
 
   base.TaggedTemplateExpression = function(node, st, c) {
     c(node.tag, st, "Expression");