From 09da9c82b8bd0836dfb13cba8d64a9040974efa1 Mon Sep 17 00:00:00 2001
From: Patrick Steele-Idem <pnidem@gmail.com>
Date: Wed, 22 Oct 2014 15:05:39 -0600
Subject: [PATCH] #3 Template writing to disk should be atomic

---
 runtime/loader.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/runtime/loader.js b/runtime/loader.js
index 4450d9b71..f2c2e78eb 100644
--- a/runtime/loader.js
+++ b/runtime/loader.js
@@ -21,6 +21,7 @@ function loadSource(templatePath, compiledSrc) {
 
 module.exports = function load(templatePath) {
     templatePath = nodePath.resolve(cwd, templatePath);
+    var targetDir = nodePath.dirname(templatePath);
 
     var targetFile = templatePath + '.js';
     var compiler = markoCompiler.createCompiler(templatePath);
@@ -34,7 +35,10 @@ module.exports = function load(templatePath) {
 
     // console.log('Compiled code for "' + templatePath + '":\n' + compiledSrc);
 
-    fs.writeFileSync(targetFile, compiledSrc, {encoding: 'utf8'});
+    var filename = nodePath.basename(targetFile);
+    var tempFile = nodePath.join(targetDir, '.' + process.pid + '.' + Date.now() + '.' + filename);
+    fs.writeFileSync(tempFile, compiledSrc, {encoding: 'utf8'});
+    fs.renameSync(tempFile, targetFile);
 
     return require(targetFile);
 };