From 8d092fc84d4654aa57a901a530571101077ee7dd Mon Sep 17 00:00:00 2001
From: Brian Gough <bjg@network-theory.co.uk>
Date: Tue, 3 Mar 2015 16:45:37 +0000
Subject: [PATCH] replace .filter with _.filter to remove dependency on ES5

---
 .../web/public/coffee/ide/pdfng/directives/pdfViewer.coffee    | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/services/web/public/coffee/ide/pdfng/directives/pdfViewer.coffee b/services/web/public/coffee/ide/pdfng/directives/pdfViewer.coffee
index 29e99fdd02..09dcbadff6 100644
--- a/services/web/public/coffee/ide/pdfng/directives/pdfViewer.coffee
+++ b/services/web/public/coffee/ide/pdfng/directives/pdfViewer.coffee
@@ -253,7 +253,8 @@ define [
 				getVisiblePages = () ->
 					top = element[0].scrollTop;
 					bottom = top + element[0].clientHeight;
-					visiblePages = scope.pages.filter (page) ->
+					visiblePages = _.filter scope.pages, (page) ->
+						return false if not page.element?
 						pageElement = page.element[0]
 						pageTop = pageElement.offsetTop
 						pageBottom = pageTop + pageElement.clientHeight