From 002c9e5fd9d54c9f2f646caefb20d0b053bd4e03 Mon Sep 17 00:00:00 2001
From: Simo Kinnunen <simo@shoqolate.com>
Date: Wed, 14 May 2014 11:01:59 +0900
Subject: [PATCH] Add a Node.js code watcher. It's not a separate process, so
 it can check require.cache for files it should watch. Currently unused due to
 missing SIGHUP handlers.

---
 lib/util/refresh.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 lib/util/refresh.js

diff --git a/lib/util/refresh.js b/lib/util/refresh.js
new file mode 100644
index 00000000..c2be0ff0
--- /dev/null
+++ b/lib/util/refresh.js
@@ -0,0 +1,21 @@
+var fs = require('fs')
+
+var watchers = Object.create(null)
+
+function refresh() {
+  process.kill('SIGHUP')
+}
+
+function collect() {
+  Object.keys(require.cache).forEach(function(path) {
+    if (!watchers[path]) {
+      if (path.indexOf('node_modules') === -1) {
+        watchers[path] = fs.watch(path, refresh)
+      }
+    }
+  })
+}
+
+module.exports = function() {
+  collect()
+}