From 1a74af445ca42cffc4f61ccb32f301f127727acd Mon Sep 17 00:00:00 2001
From: Jason <31967657+JasonsCPL@users.noreply.github.com>
Date: Fri, 22 Dec 2017 01:50:28 +0800
Subject: [PATCH] add "this"

Sorry for my English first.
In the closure,  the both "typeof" of "document" & "window"  are return "undefined" without "this" prefix. But they are under the variable  "this".
So ...
---
 src/showdown.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/showdown.js b/src/showdown.js
index 18b8268..94e2cfa 100644
--- a/src/showdown.js
+++ b/src/showdown.js
@@ -3,7 +3,7 @@
  */
 
 // load dependencies
-if (typeof document === 'undefined' && typeof window === 'undefined') {
+if (typeof this.document === 'undefined' && typeof this.window === 'undefined') {
   var jsdom = require('jsdom').jsdom,
       jsdomObj = jsdom('', {}),
       window = jsdomObj.defaultView, // jshint ignore:line