diff --git a/web/app.js b/web/app.js
index 6ae48d565..a34449fe8 100644
--- a/web/app.js
+++ b/web/app.js
@@ -2229,7 +2229,18 @@ function webViewerInitialized() {
   );
 
   try {
-    webViewerOpenFileViaURL(file);
+    if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
+      if (file) {
+        PDFViewerApplication.open(file);
+      } else {
+        PDFViewerApplication._hideViewBookmark();
+      }
+    } else if (PDFJSDev.test("MOZCENTRAL || CHROME")) {
+      PDFViewerApplication.setTitleUsingUrl(file, /* downloadUrl = */ file);
+      PDFViewerApplication.initPassiveLoading();
+    } else {
+      throw new Error("Not implemented: webViewerInitialized");
+    }
   } catch (reason) {
     PDFViewerApplication.l10n.get("loading_error").then(msg => {
       PDFViewerApplication._documentError(msg, reason);
@@ -2237,25 +2248,6 @@ function webViewerInitialized() {
   }
 }
 
-function webViewerOpenFileViaURL(file) {
-  if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
-    if (file) {
-      PDFViewerApplication.open(file);
-    } else {
-      PDFViewerApplication._hideViewBookmark();
-    }
-  } else if (PDFJSDev.test("MOZCENTRAL || CHROME")) {
-    PDFViewerApplication.setTitleUsingUrl(file, /* downloadUrl = */ file);
-    PDFViewerApplication.initPassiveLoading();
-  } else {
-    if (file) {
-      throw new Error("Not implemented: webViewerOpenFileViaURL");
-    } else {
-      PDFViewerApplication._hideViewBookmark();
-    }
-  }
-}
-
 function webViewerPageRendered({ pageNumber, error }) {
   // If the page is still visible when it has finished rendering,
   // ensure that the page number input loading indicator is hidden.
@@ -2432,9 +2424,9 @@ function webViewerHashchange(evt) {
   }
 }
 
-let webViewerFileInputChange, webViewerOpenFile;
 if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
-  webViewerFileInputChange = function (evt) {
+  // eslint-disable-next-line no-var
+  var webViewerFileInputChange = function (evt) {
     if (PDFViewerApplication.pdfViewer?.isInPresentationMode) {
       return; // Opening a new PDF file isn't supported in Presentation Mode.
     }
@@ -2447,7 +2439,8 @@ if (typeof PDFJSDev === "undefined" || PDFJSDev.test("GENERIC")) {
     PDFViewerApplication.open(url);
   };
 
-  webViewerOpenFile = function (evt) {
+  // eslint-disable-next-line no-var
+  var webViewerOpenFile = function (evt) {
     const fileInput = PDFViewerApplication.appConfig.openFileInput;
     fileInput.click();
   };