Changed watchFile callback behavior.

DanielRosenwasser · DanielRosenwasser · commit 91023227e49c · 2014-07-31T22:41:01.000-07:00
We no longer recompile unless the new last-modified time is more recent.
diff --git a/src/compiler/sys.ts b/src/compiler/sys.ts
@@ -199,7 +199,11 @@ var sys: System = (function () {
                     close() { _fs.unwatchFile(fileName, fileChanged); }
                 };
 
-                function fileChanged() {
+                function fileChanged(curr:any, prev:any) {
+                    if (+curr.mtime <= +prev.mtime) {
+                        return;
+                    }
+
                     callback(fileName);
                 };
             },
