[api] simplest possible file watcher (ref #41)

Author: mmalecki

lib/forever/monitor.js

@@ -12,6 +12,7 @@ var util = require('util'),
     events = require('events'),
     spawn = require('child_process').spawn,
     winston = require('winston'),
+    watch = require('watch'),
     forever = require('../forever');
 
 //
@@ -364,6 +365,21 @@ Monitor.prototype.kill = function (forceStop) {
   return this;
 };
 
+//
+// ### function watch ()
+// Starts watching directory tree for changes.
+//
+Monitor.prototype.watch = function () {
+  var self = this;
+
+  watch.createMonitor(process.cwd(), {ignoreDotFiles: true}, function (monitor) {
+    monitor.on('changed', function (f, curr, prev) {
+      self.info('restaring script because ' + f + ' changed');
+      self.restart();
+    });
+  });
+}
+
 //
 // ### @private function _getEnv ()
 // Returns the environment variables that should be passed along