From dc45573cf9ead19da355872e6fbbd6270737453f Mon Sep 17 00:00:00 2001
From: Matt Brennan <matt.brennan@import.io>
Date: Tue, 30 Jul 2013 16:56:14 +0100
Subject: [PATCH] Better "JavaScript evaluation error" message

Less's messages for JavaScript evaluation errors do not contain the actual error thrown, making them very hard to debug. This PR adds the error message to the log.
---
 lib/less/tree/javascript.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/less/tree/javascript.js b/lib/less/tree/javascript.js
index eaa9c0fe..b196b2b7 100644
--- a/lib/less/tree/javascript.js
+++ b/lib/less/tree/javascript.js
@@ -19,7 +19,7 @@ tree.JavaScript.prototype = {
         try {
             expression = new(Function)('return (' + expression + ')');
         } catch (e) {
-            throw { message: "JavaScript evaluation error: `" + expression + "`" ,
+            throw { message: "JavaScript evaluation error: " + e.message + " from `" + expression + "`" ,
                     index: this.index };
         }