Extract code for combining messages from different results

1 files changed, 7 insertions, 3 deletions

diff --git a/lib/results.js b/lib/results.js
index c12d194..55efd25 100644
--- a/lib/results.js
+++ b/lib/results.js
@@ -15,15 +15,15 @@ Result.prototype.map = function(func) {
 };
 
 Result.prototype.flatMapThen = function(func) {
-    var messages = this.messages;
+    var that = this;
     return func(this.value).then(function(otherResult) {
-        return new Result(otherResult.value, messages.concat(otherResult.messages));
+        return new Result(otherResult.value, combineMessages([that, otherResult]));
     });
 };
 
 Result.combine = function(results) {
     var values = _.flatten(_.pluck(results, "value"));
-    var messages = _.flatten(_.pluck(results, "messages"), true);
+    var messages = combineMessages(results);
     return new Result(values, messages);
 };
 
@@ -33,3 +33,7 @@ function warning(message) {
         message: message
     };
 }
+
+function combineMessages(results) {
+    return _.flatten(_.pluck(results, "messages"), true);
+}