From 35036b188b4ee6b42df553bbb93bc8a6b19eae9d Mon Sep 17 00:00:00 2001
From: Damian Schenkelman <damian.schenkelman@gmail.com>
Date: Tue, 7 Apr 2015 13:43:07 -0300
Subject: [PATCH] Only set iat if there is none

Makes sense?
---
 index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.js b/index.js
index 1c04474..d2b3278 100644
--- a/index.js
+++ b/index.js
@@ -39,7 +39,7 @@ module.exports.sign = function(payload, secretOrPrivateKey, options) {
 
   var timestamp = Math.floor(Date.now() / 1000);
   if (!options.noTimestamp) {
-    payload.iat = timestamp;
+    payload.iat = payload.iat || timestamp;
   }
 
   var expiresInSeconds = options.expiresInMinutes ?