From c3e871501034fdb679adab83bc7ff6f715067a58 Mon Sep 17 00:00:00 2001
From: Moti Zilberman <moti@digital-detox.co.uk>
Date: Sun, 19 Mar 2017 10:06:53 +0000
Subject: [PATCH] Mask existing "local" bindings when registering new binding

 Fixes #5491.
---
 packages/babel-traverse/src/scope/index.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/packages/babel-traverse/src/scope/index.js b/packages/babel-traverse/src/scope/index.js
index b2cdc4238e..773cda8058 100644
--- a/packages/babel-traverse/src/scope/index.js
+++ b/packages/babel-traverse/src/scope/index.js
@@ -532,6 +532,8 @@ export default class Scope {
         // in `warnOnFlowBinding`.
         if (local && local.path.isFlow()) local = null;
 
+        if (local && local.kind === "local") local = null;
+
         parent.references[name] = true;
 
         this.bindings[name] = new Binding({