From 95e63fd9c9d3fea600a88e60485db29d34859d78 Mon Sep 17 00:00:00 2001
From: Henry Zhu <hi@henryzoo.com>
Date: Fri, 11 Sep 2015 00:40:51 -0400
Subject: [PATCH] evaluation: don't evaluate `in` and `instanceof` binary exp -
 fixes #2355

---
 packages/babel/src/traversal/path/evaluation.js | 2 --
 1 file changed, 2 deletions(-)

diff --git a/packages/babel/src/traversal/path/evaluation.js b/packages/babel/src/traversal/path/evaluation.js
index a27e4e24e5..6349dfa3b8 100644
--- a/packages/babel/src/traversal/path/evaluation.js
+++ b/packages/babel/src/traversal/path/evaluation.js
@@ -175,8 +175,6 @@ export function evaluate(): { confident: boolean; value: any } {
         case "<<": return left << right;
         case ">>": return left >> right;
         case ">>>": return left >>> right;
-        case "in": return left in right;
-        case "instanceof": return left instanceof right;
       }
     }