Minor fix

lib/platform/replace_current_route.dart

@@ -1 +0,0 @@
-export 'replace_current_route_none.dart' if (dart.library.html) 'replace_current_route_web.dart';

lib/platform/replace_current_route_none.dart

@@ -1,3 +0,0 @@
-void replaceCurrentRoute(String query) {
-    throw UnimplementedError();
-}

lib/platform/replace_current_route_web.dart

@@ -1,13 +0,0 @@
-// ignore: avoid_web_libraries_in_flutter
-import 'dart:html';
-
-void replaceCurrentRoute(String query) {
-  const usePathUrl = bool.fromEnvironment("usePathUrl");
-  if (usePathUrl) {
-    final q = query.substring(1);
-    final base = document.baseUri ?? "/";
-    window.history.replaceState(null, "", "$base$q");
-  } else {
-    window.history.replaceState(null, "", "#$query");
-  }
-}

lib/viewer/single.dart

@@ -1,6 +1,5 @@
 import 'package:dio/dio.dart';
 import 'package:dio_image_provider/dio_image_provider.dart';
-import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/scheduler.dart';
 import 'package:flutter/services.dart';
@@ -13,7 +12,6 @@ import 'package:photo_view/photo_view_gallery.dart';
 import '../api/file.dart';
 import '../api/gallery.dart';
 import '../globals.dart';
-import '../platform/replace_current_route.dart';
 
 final _log = Logger("SinglePageViewer");
 
@@ -102,15 +100,9 @@ class _SinglePageViewer extends State<SinglePageViewer> with ThemeModeWidget {
   }
 
   void _onPageChanged(BuildContext context) {
-    GoRouter.optionURLReflectsImperativeAPIs = false;
-    final q = "/gallery/${widget.gid}/page/${_index + 1}";
-    context.replace(q,
+    context.replace("/gallery/${widget.gid}/page/${_index + 1}",
         extra: SinglePageViewerExtra(data: _data, files: _files));
-    GoRouter.optionURLReflectsImperativeAPIs = true;
     _page_changed = false;
-    if (kIsWeb) {
-      replaceCurrentRoute(q);
-    }
   }
 
   @override

pubspec.lock

@@ -370,10 +370,10 @@ packages:
     dependency: "direct main"
     description:
       name: go_router
-      sha256: "5668e6d3dbcb2d0dfa25f7567554b88c57e1e3f3c440b672b24d4a9477017d5b"
+      sha256: c247a4f76071c3b97bb5ae8912968870d5565644801c5e09f3bc961b4d874895
       url: "https://pub.dev"
     source: hosted
-    version: "10.1.2"
+    version: "12.1.1"
   graphs:
     dependency: transitive
     description:

pubspec.yaml

@@ -23,7 +23,7 @@ dependencies:
     sdk: flutter
   flutter_web_plugins:
     sdk: flutter
-  go_router: ^10.1.0
+  go_router: ^12.1.0
   image: ^4.0.17
   infinite_scroll_pagination: ^4.0.0
   intl: any