From 7b15094cdfdc56b1e8d932b1a8c9811e5fab2823 Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Wed, 23 Sep 2020 14:11:45 +0200
Subject: [PATCH] Ignore `RenderingCancelledException` when logging errors in
 `PDFRenderingQueue.renderView`

Note that a `RenderingCancelledException` *should* never actually reach this method, but better safe than sorry I suppose, considering that both `PDFPageView` and `PDFThumbnailView` are already catching `RenderingCancelledException`s since those are *not* Errors in the normal sense of the word.
---
 web/pdf_rendering_queue.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/web/pdf_rendering_queue.js b/web/pdf_rendering_queue.js
index 444f1cb01..64b377dd2 100644
--- a/web/pdf_rendering_queue.js
+++ b/web/pdf_rendering_queue.js
@@ -13,6 +13,8 @@
  * limitations under the License.
  */
 
+import { RenderingCancelledException } from "pdfjs-lib";
+
 const CLEANUP_TIMEOUT = 30000;
 
 const RenderingStates = {
@@ -170,6 +172,9 @@ class PDFRenderingQueue {
             this.renderHighestPriority();
           })
           .catch(reason => {
+            if (reason instanceof RenderingCancelledException) {
+              return;
+            }
             console.error(`renderView: "${reason}"`);
           });
         break;