[go_router_builder]: In version 2.8.1 or later, using a required value for queryParameters will result in a build error

[Karibash]

Steps to reproduce

Define a route with required values as follows.

import 'package:go_router/go_router.dart';

@TypedGoRoute<NonNullableRequiredParamNotInPath>(path: 'bob')
class NonNullableRequiredParamNotInPath extends GoRouteData {
 NonNullableRequiredParamNotInPath({required this.id});
 final int id;
}

Expected results

The build should be able to execute normally.

Actual results

A nullable error occurs when building.

Code sample

Code sample

import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';

part 'app.g.dart';

void main() => runApp(App());

class App extends StatelessWidget {
 App({super.key});

 @override
 Widget build(BuildContext context) => MaterialApp.router(
 routerConfig: _router,
 title: 'GoRouter Example',
 );

 final GoRouter _router = GoRouter(routes: $appRoutes);
}

@TypedGoRoute< HomeRoute >(path: '/')
class HomeRoute extends GoRouteData {
 HomeRoute({required this.id});
 final int id;

 @override
 Widget build(BuildContext context, GoRouterState state) {
 return HomeScreen(id: id);
 }
}

class HomeScreen extends StatelessWidget {
 const HomeScreen({super.key, required this.id});
 final int id;

 @override
 Widget build(BuildContext context) => Scaffold(
 appBar: AppBar(title: const Text('GoRouter Example')),
 body: Text(id.toString()),
 );
}

Screenshots or Video

Screenshots / Video demonstration

[Upload media here]

Logs

Logs

Error: The argument type 'String?' can't be assigned to the parameter type 'String' because 'String?' is nullable and 'String' isn't.

Flutter Doctor output

Doctor output

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.29.0, on macOS 15.3 24D60 darwin-arm64, locale ja-JP)
[✓] Android toolchain - develop for Android devices (Android SDK version 35.0.1)
[✓] Xcode - develop for iOS and macOS (Xcode 15.4)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2024.2)
[✓] IntelliJ IDEA Ultimate Edition (version 2024.3.2.2)
[✓] VS Code (version 1.96.4)
[✓] Connected device (5 available)
[✓] Network resources

• No issues found!

[darshankawar]

Closing as duplicate of #164354 which also has an active PR to fix the issue, so please follow-up in it for further updates.

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.