From e7918fe6e545a424ea635d7c7a243a9394669c8f Mon Sep 17 00:00:00 2001
From: Yuriy Glukhov <yuriy.glukhov@gmail.com>
Date: Thu, 15 Oct 2015 17:59:23 +0300
Subject: [PATCH] Avoid extra copy in JS when inserting.

---
 lib/system.nim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/system.nim b/lib/system.nim
index 02544be274..b9ed03ddfc 100644
--- a/lib/system.nim
+++ b/lib/system.nim
@@ -1411,7 +1411,7 @@ proc insert*[T](x: var seq[T], item: T, i = 0.Natural) {.noSideEffect.} =
     defaultImpl()
   else:
     when defined(js):
-      var it = item
+      var it : T
       {.emit: "`x`[`x`_Idx].splice(`i`, 0, `it`);".}
     else:
       defaultImpl()