Do not watch files more than once. And close them correctly on an error.

Author: pboos

lib/webc.js

@@ -28,6 +28,12 @@ exports.watch = function(options, callback) {
   var watchersActive = false;
 
   options.extension = function(inputPath, outputPath) {
+    // do not add watcher if file is already watched
+    for (var i = 0; i < watchers.length; i++) {
+      if (watchers[i].path === inputPath) {
+        return;
+      }
+    };
     var watcher = fs.watch(inputPath, function(event, filename) {
       if (!watchersActive) { return; }
 
@@ -52,7 +58,7 @@ exports.watch = function(options, callback) {
         }
       }
     });
-    watchers.push(watcher);
+    watchers.push({ path: inputPath, watcher: watcher });
   };
 
   exports.compile(options, function(err) {
@@ -63,7 +69,7 @@ exports.watch = function(options, callback) {
 
   function stopWatchers() {
     for (var i = 0; i < watchers.length; i++) {
-      watchers[i].close();
+      watchers[i].watcher.close();
     };
   }
 };