Changes Singleton createCb and returnCb to expect err as first argument

dresende · dresende · commit 919ba4e53823 · 2013-08-20T11:28:03.000+01:00
diff --git a/lib/Singleton.js b/lib/Singleton.js
@@ -20,15 +20,17 @@ exports.get = function (key, opts, createCb, returnCb) {
 		} else if (map[key].t !== null && map[key].t <= Date.now()) {
 			delete map[key];
 		} else  {
-			return returnCb(map[key].o);
+			return returnCb(null, map[key].o);
 		}
 	}
 
-	createCb(function (value) {
+	createCb(function (err, value) {
+		if (err) return returnCb(err);
+
 		map[key] = { // object , timeout
 			o : value,
 			t : (opts && typeof opts.cache === "number" ? Date.now() + (opts.cache * 1000) : null)
 		};
-		return returnCb(map[key].o);
+		return returnCb(null, map[key].o);
 	});
 };
