Remove duplicate messages when combining results

1 files changed, 15 insertions, 1 deletions

diff --git a/lib/results.js b/lib/results.js
index 55efd25..fe9f632 100644
--- a/lib/results.js
+++ b/lib/results.js
@@ -35,5 +35,19 @@ function warning(message) {
 }
 
 function combineMessages(results) {
-    return _.flatten(_.pluck(results, "messages"), true);
+    var messages = [];
+    _.flatten(_.pluck(results, "messages"), true).forEach(function(message) {
+        if (!containsMessage(messages, message)) {
+            messages.push(message);
+        }
+    });
+    return messages;
+}
+
+function containsMessage(messages, message) {
+    return _.find(messages, isSameMessage.bind(null, message)) !== undefined;
+}
+
+function isSameMessage(first, second) {
+    return first.type === second.type && first.message === second.message;
 }