fix(spawnify) when error.code === EACESS, close and exit events do not emitted

Author: coderaiser

lib/spawnify.js

@@ -91,14 +91,30 @@
     };
 
     Spawnify.prototype._emit = function emit(event, data) {
-        var count;
+        var self    = this,
+            count   = function(event) {
+                var listeners = self.listeners(event);
+                
+                return listeners.length;
+            };
 
         assert(event, 'event could not be empty!');
 
-        count = this.listeners(event).length;
-        
-        if (count || event === 'error')
+        if (count(event) || event === 'error') {
             this.emit(event, data);
+            
+            /* 
+             * when code is EACESS
+             * close and exit events
+             * whould not be emitted
+             */
+            if (event === 'error' && data.code === 'EACCES')
+                if (count('close'))
+                    this.emit('close');
+                
+                if (count('exit'))
+                    this.emit('exit');
+        }
     };
 
     Spawnify.prototype._set = function set(type, command, options) {