Merge pull request #235 from wyicwx/master

fix some  performance issues

lib/gaze.js

@@ -270,6 +270,8 @@ Gaze.prototype.relative = function (dir, unixify) {
 
 // Adds files and dirs to watched
 Gaze.prototype._addToWatched = function (files) {
+  var dirs = [];
+
   for (var i = 0; i < files.length; i++) {
     var file = files[i];
     var filepath = path.resolve(this.options.cwd, file);
@@ -285,6 +287,13 @@ Gaze.prototype._addToWatched = function (files) {
     if (file.slice(-1) === '/') { filepath += path.sep; }
     helper.objectPush(this._watched, path.dirname(filepath) + path.sep, filepath);
 
+    dirs.push(dirname);
+  }
+
+  dirs = helper.unique(dirs);
+
+  for (var k = 0; k < dirs.length; k++) {
+    dirname = dirs[k];
     // add folders into the mix
     var readdir = fs.readdirSync(dirname);
     for (var j = 0; j < readdir.length; j++) {
@@ -294,6 +303,7 @@ Gaze.prototype._addToWatched = function (files) {
       }
     }
   }
+
   return this;
 };