From 38fcf8e274e0a99178e6ceb0c7872233649596be Mon Sep 17 00:00:00 2001
From: Andrea Bogazzi <andreabogazzi79@gmail.com>
Date: Wed, 13 Dec 2017 00:08:57 +0100
Subject: [PATCH] Fix the wrapper (#4554)

---
 src/static_canvas.class.js | 4 ++--
 src/util/dom_misc.js       | 6 ++++++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/static_canvas.class.js b/src/static_canvas.class.js
index 2c617659..b6851277 100644
--- a/src/static_canvas.class.js
+++ b/src/static_canvas.class.js
@@ -1762,11 +1762,11 @@
 
   if (fabric.isLikelyNode) {
     fabric.StaticCanvas.prototype.createPNGStream = function() {
-      var impl = fabric.jsdomImplForWrapper(this.lowerCanvasEl);
+      var impl = fabric.util.getNodeCanvas(this.lowerCanvasEl);
       return impl && impl.createPNGStream();
     };
     fabric.StaticCanvas.prototype.createJPEGStream = function(opts) {
-      var impl = fabric.jsdomImplForWrapper(this.lowerCanvasEl);
+      var impl = fabric.util.getNodeCanvas(this.lowerCanvasEl);
       return impl && impl.createJPEGStream(opts);
     };
   }
diff --git a/src/util/dom_misc.js b/src/util/dom_misc.js
index ee3c001d..172fe069 100644
--- a/src/util/dom_misc.js
+++ b/src/util/dom_misc.js
@@ -288,6 +288,11 @@
     fabric.util.getScript = getScript;
   })();
 
+  function getNodeCanvas(element) {
+    var impl = fabric.jsdomImplForWrapper(element);
+    return impl._canvas || impl._image;
+  };
+
   fabric.util.getById = getById;
   fabric.util.toArray = toArray;
   fabric.util.makeElement = makeElement;
@@ -296,5 +301,6 @@
   fabric.util.getScrollLeftTop = getScrollLeftTop;
   fabric.util.getElementOffset = getElementOffset;
   fabric.util.getElementStyle = getElementStyle;
+  fabric.util.getNodeCanvas = getNodeCanvas;
 
 })();