From ed8b172d12822a0b2a43aad4daa312c962a5a73a Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Sat, 7 May 2022 15:48:54 +0200
Subject: [PATCH] Stop bundling `PDFViewerApplication.{unbindEvents,
 unbindWindowEvents}` in MOZCENTRAL builds

These methods are completely unused in the Firefox PDF Viewer, and were only added to supplement the `PDFViewerApplication.{bindEvents, bindWindowEvents}`-methods since third-party implementations may apparently need to remove event listeners (see PR 8525).
However, in the MOZCENTRAL build that's just dead code and this patch reduces the size of the *built* `web/viewer.js`-file by `~3.5` kB.
---
 web/app.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/web/app.js b/web/app.js
index 532ddb1a0..f0be10f05 100644
--- a/web/app.js
+++ b/web/app.js
@@ -1952,6 +1952,9 @@ const PDFViewerApplication = {
   },
 
   unbindEvents() {
+    if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
+      throw new Error("Not implemented: unbindEvents");
+    }
     const { eventBus, _boundEvents } = this;
 
     eventBus._off("resize", webViewerResize);
@@ -2008,6 +2011,9 @@ const PDFViewerApplication = {
   },
 
   unbindWindowEvents() {
+    if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
+      throw new Error("Not implemented: unbindWindowEvents");
+    }
     const { _boundEvents } = this;
 
     window.removeEventListener("visibilitychange", webViewerVisibilityChange);