FIX: null dates crashed the client app. last_posted_at was not updating properly on split topic.

app/assets/javascripts/discourse/components/formatter.js

@@ -18,6 +18,8 @@ Discourse.Formatter = (function(){
   }
 
   longDate = function(dt) {
+    if (!dt) return;
+
     return moment(dt).longDate();
   };
 
@@ -30,6 +32,9 @@ Discourse.Formatter = (function(){
   };
 
   autoUpdatingRelativeAge = function(date,options) {
+
+    if (!date) return "";
+
     options = options || {};
     var format = options.format || "tiny";
 

app/assets/javascripts/discourse/helpers/application_helpers.js

@@ -272,7 +272,7 @@ Handlebars.registerHelper('number', function(property, options) {
   @for Handlebars
 **/
 Handlebars.registerHelper('date', function(property, options) {
-  var leaveAgo, val;
+  var leaveAgo;
   if (property.hash) {
     if (property.hash.leaveAgo) {
       leaveAgo = property.hash.leaveAgo === "true";
@@ -281,11 +281,11 @@ Handlebars.registerHelper('date', function(property, options) {
       property = property.hash.path;
     }
   }
-  val = Ember.Handlebars.get(this, property, options);
-  var date = null;
+  var val = Ember.Handlebars.get(this, property, options);
   if (val) {
-    date = new Date(val);
+    var date = new Date(val);
+    return new Handlebars.SafeString(Discourse.Formatter.autoUpdatingRelativeAge(date, {format: 'medium', leaveAgo: leaveAgo}));
   }
-  return new Handlebars.SafeString(Discourse.Formatter.autoUpdatingRelativeAge(date, {format: 'medium', leaveAgo: leaveAgo}));
+
 });