From 2a0bcfd086891ae15fa2b539b0fa9705cade88fa Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Wed, 13 May 2015 08:45:16 +0100
Subject: [PATCH] add support for evaluating unary ~

---
 src/babel/traversal/path/evaluation.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/babel/traversal/path/evaluation.js b/src/babel/traversal/path/evaluation.js
index 66b1593c2c..067bc3c7a9 100644
--- a/src/babel/traversal/path/evaluation.js
+++ b/src/babel/traversal/path/evaluation.js
@@ -92,6 +92,7 @@ export function evaluate(): { confident: boolean; value: any } {
         case "!": return !arg;
         case "+": return +arg;
         case "-": return -arg;
+        case "~": return ~arg;
       }
     }