fix exception for empty content in TikzManager

2017-07-18 11:29:59 +01:00
parent ea34a1a89d
commit 472531f617
2 changed files with 8 additions and 2 deletions
--- a/app/coffee/TikzManager.coffee
+++ b/app/coffee/TikzManager.coffee
@@ -22,8 +22,8 @@ module.exports = TikzManager =

 	_includesTikz: (resource) ->
 		# check if we are using tikz externalize
-		content = resource.content.slice(0,65536)
-		if content.indexOf("\\tikzexternalize") >= 0
+		content = resource.content?.slice(0,65536)
+		if content?.indexOf("\\tikzexternalize") >= 0
 			return true
 		else
 			return false