Improve node.js support

This change fixes "Unhandled rejection ReferenceError: HTMLElement is not defined" issue that is discussed in more detail in mozilla#8489.
IsaacSchemm · Mar 21, 2018 · c20426e · c20426e
1 parent 3bfc797
commit c20426e
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/display/canvas.js b/src/display/canvas.js
@@ -2112,8 +2112,9 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
       var heightScale = Math.max(Math.sqrt(c * c + d * d), 1);
 
       var imgToPaint, tmpCanvas;
-      // instanceof HTMLElement does not work in jsdom node.js module
-      if (imgData instanceof HTMLElement || !imgData.data) {
+      // typeof check is needed due to node.js support, see issue #8489
+      if ((typeof HTMLElement === 'function' &&
+           imgData instanceof HTMLElement) || !imgData.data) {
         imgToPaint = imgData;
       } else {
         tmpCanvas = this.cachedCanvases.getCanvas('inlineImage',