Add nomatch event. Closes GH-40.

shama · Nov 28, 2013 · bfd0ccc · bfd0ccc
1 parent 6648d01
commit bfd0ccc
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Showing 3 changed files with 25 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -116,6 +116,7 @@ var gaze = new Gaze(pattern, options, callback);
 * `renamed(newPath, oldPath)` When a file has been renamed.
 * `end()` When the watcher is closed and watches have been removed.
 * `error(err)` When an error occurs.
+* `nomatch` When no files have been matched.
 
 #### Methods
 

diff --git a/lib/gaze.js b/lib/gaze.js
@@ -68,6 +68,9 @@ function Gaze(patterns, opts, done) {
     this.add(patterns, done);
   }
 
+  // keep the process alive
+  this._keepalive = setInterval(function() {}, 200);
+
   return this;
 }
 util.inherits(Gaze, EE);
@@ -152,6 +155,7 @@ Gaze.prototype.close = function(_reset) {
     setTimeout(function() {
       self.emit('end');
       self.removeAllListeners();
+      clearInterval(self._keepalive);
     }, delay + 100);
   }
   return self;
@@ -331,6 +335,15 @@ Gaze.prototype._initWatched = function(done) {
   var self = this;
   var cwd = this.options.cwd || process.cwd();
   var curWatched = Object.keys(self._watched);
+
+  // if no matching files
+  if (curWatched.length < 1) {
+    self.emit('ready', self);
+    if (done) { done.call(self, null, self); }
+    self.emit('nomatch');
+    return;
+  }
+
   helper.forEachSeries(curWatched, function(dir, next) {
     dir = dir || '';
     var files = self._watched[dir];

diff --git a/test/api_test.js b/test/api_test.js
@@ -34,5 +34,15 @@ exports.api = {
       this.close();
       test.done();
     });
-  }
+  },
+  nomatch: function(test) {
+    test.expect(1);
+    gaze('nomatch.js', function(err, watcher) {
+      watcher.on('nomatch', function() {
+        test.ok(true, 'nomatch was emitted.');
+        watcher.close();
+      });
+      watcher.on('end', test.done);
+    });
+  },
 };