From: Mihai Bazon <mihai@bazon.net>
Date: Thu, 1 Nov 2012 11:35:08 +0000 (+0200)
Subject: fix compressing UnaryPrefix
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=d4c25c571bfac8e9bf91b2b894837d61370b0c35;p=UglifyJS.git

fix compressing UnaryPrefix

only try negating the expression if the operator is `!`

#kendo
---

diff --git a/lib/compress.js b/lib/compress.js
index ee255d78..c3b76118 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1446,7 +1446,7 @@ merge(Compressor.prototype, {
                 return make_node(AST_True, self);
             }
         }
-        if (e instanceof AST_Binary) {
+        if (e instanceof AST_Binary && self.operator == "!") {
             self = best_of(self, e.negate(compressor));
         }
         return self.evaluate(compressor)[0];