From 8ff0f8e4dfe347251524b171b6cf184da242787d Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Fri, 27 Aug 2021 17:29:00 +0200
Subject: [PATCH] Use optional chaining even more in the `web/app.js` file

---
 web/app.js | 17 ++++-------------
 1 file changed, 4 insertions(+), 13 deletions(-)

diff --git a/web/app.js b/web/app.js
index f1c8fa003..5d12b6dda 100644
--- a/web/app.js
+++ b/web/app.js
@@ -853,12 +853,8 @@ const PDFViewerApplication = {
     this.pdfAttachmentViewer.reset();
     this.pdfLayerViewer.reset();
 
-    if (this.pdfHistory) {
-      this.pdfHistory.reset();
-    }
-    if (this.findBar) {
-      this.findBar.reset();
-    }
+    this.pdfHistory?.reset();
+    this.findBar?.reset();
     this.toolbar.reset();
     this.secondaryToolbar.reset();
 
@@ -1850,9 +1846,7 @@ const PDFViewerApplication = {
       this.printService.destroy();
       this.printService = null;
 
-      if (this.pdfDocument) {
-        this.pdfDocument.annotationStorage.resetModified();
-      }
+      this.pdfDocument?.annotationStorage.resetModified();
     }
     this.forceRendering();
   },
@@ -1864,10 +1858,7 @@ const PDFViewerApplication = {
   },
 
   requestPresentationMode() {
-    if (!this.pdfPresentationMode) {
-      return;
-    }
-    this.pdfPresentationMode.request();
+    this.pdfPresentationMode?.request();
   },
 
   triggerPrinting() {