From f92faffb5b43c52e86c7fd904fa3c4bb09c66ab9 Mon Sep 17 00:00:00 2001
From: Nathan Sobo <nathan@github.com>
Date: Mon, 2 Jul 2012 19:21:46 -0600
Subject: [PATCH] Use html5 storage to cache coffee script compilation by file
 md5

---
 src/stdlib/require.coffee | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/stdlib/require.coffee b/src/stdlib/require.coffee
index 3a291b324..cf760ec5b 100644
--- a/src/stdlib/require.coffee
+++ b/src/stdlib/require.coffee
@@ -106,7 +106,13 @@ __exists = (path) ->
 
 __coffeeCache = (filePath) ->
   {CoffeeScript} = require 'coffee-script'
-  CoffeeScript.compile(__read(filePath), filename: filePath)
+  cacheKey = 'coffee.' + $native.md5ForPath(filePath)
+  if compiled = localStorage.getItem(cacheKey)
+    compiled
+  else
+    compiled = CoffeeScript.compile(__read(filePath), filename: filePath)
+    localStorage.setItem(cacheKey, compiled)
+    compiled
 
 __read = (path) ->
   try