From b0cbbf2dfbf457ac95a3396bc8c32df4320bc716 Mon Sep 17 00:00:00 2001
From: Gunnsteinn Hall <gunnsteinn.hall@gmail.com>
Date: Tue, 22 Jan 2019 13:44:31 +0000
Subject: [PATCH] Update extractor const.go

---
 pdf/extractor/const.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pdf/extractor/const.go b/pdf/extractor/const.go
index 0772a9d1..44926492 100644
--- a/pdf/extractor/const.go
+++ b/pdf/extractor/const.go
@@ -5,4 +5,10 @@
 
 package extractor
 
+import "errors"
+
 var isTesting = false
+
+var (
+	errTypeCheck = errors.New("type check error")
+)