From ad44190c6b6f6805ed02db7065660f6a41446bcd Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Thu, 14 May 2015 23:53:04 +0100
Subject: [PATCH] properly register for head variable declaration paths when
 performing scope tracking - fixes #1524

---
 src/babel/traversal/scope/index.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/babel/traversal/scope/index.js b/src/babel/traversal/scope/index.js
index 6e586b6ec1..ed33dd375a 100644
--- a/src/babel/traversal/scope/index.js
+++ b/src/babel/traversal/scope/index.js
@@ -463,6 +463,14 @@ export default class Scope {
   registerBinding(kind: string, path: TraversalPath) {
     if (!kind) throw new ReferenceError("no `kind`");
 
+    if (path.isVariableDeclaration()) {
+      var declarators = path.get("declarations");
+      for (var declar of (declarators: Array)) {
+        this.registerBinding(kind, declar);
+      }
+      return;
+    }
+
     var ids = path.getBindingIdentifiers();
 
     for (var name in ids) {