Minimal null safe code using vrouter not working.

[grinder15]

Running this code with null safety on (using null safe version of the package ofc)

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

void main() {
  runApp(
    VRouter(
      debugShowCheckedModeBanner: false, // VRouter acts as a MaterialApp
      mode: VRouterModes.history,
      routes: [
        // The path '/' goes to ProfileWidget
        VStacked(path: '/', widget: ProfileWidget()),
        // The path '/info' goes to InfoWidget
        VStacked(path: '/info', widget: InfoWidget()),
      ],
    ),
  ); // Remove the '#' from the url
}

class ProfileWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Profile'),
      ),
      body: Center(
        child: Row(
          children: [
            Text('Profile'),
            ElevatedButton(
              onPressed: () {
                VRouterData.of(context).push('/info');
              },
              child: Text('Go to Info'),
            ),
          ],
        ),
      ),
    );
  }
}

class InfoWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Info'),
      ),
      body: Center(
        child: Text('Info'),
      ),
    );
  }
}

and I got this error,

E/flutter (10296): [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: type '_InternalLinkedHashMap<String, String?>' is not a subtype of type 'Map<String, String>' of 'other'
E/flutter (10296): #0      MapMixin.addAll (dart:collection/maps.dart)
E/flutter (10296): #1      VRouterState._updateUrl (package:vrouter/src/router.dart:1409:14)
E/flutter (10296): #2      VRouterState.build.<anonymous closure> (package:vrouter/src/router.dart:603:17)
E/flutter (10296): #3      VRouterState.build.<anonymous closure> (package:vrouter/src/router.dart:586:11)
E/flutter (10296): #4      SimpleRouterDelegate.setNewRoutePath (package:simple_url_handler/simple_url_handler.dart:496:20)
E/flutter (10296): #5      RouterDelegate.setInitialRoutePath (package:flutter/src/widgets/router.dart:1077:12)
E/flutter (10296): #6      _rootRunUnary (dart:async/zone.dart:1362:47)
E/flutter (10296): #7      _CustomZone.runUnary (dart:async/zone.dart:1265:19)
E/flutter (10296): #8      _FutureListener.handleValue (dart:async/future_impl.dart:152:18)
E/flutter (10296): #9      Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:704:45)
E/flutter (10296): #10     Future._propagateToListeners (dart:async/future_impl.dart:733:32)
E/flutter (10296): #11     Future._completeWithValue (dart:async/future_impl.dart:539:5)
E/flutter (10296): #12     Future._chainForeignFuture.<anonymous closure> (dart:async/future_impl.dart:478:11)
E/flutter (10296): #13     SynchronousFuture.then (package:flutter/src/foundation/synchronous_future.dart:41:35)
E/flutter (10296): #14     Future._chainForeignFuture (dart:async/future_impl.dart:474:14)
E/flutter (10296): #15     Future._propagateToListeners (dart:async/future_impl.dart:762:20)
E/flutter (10296): #16     Future._completeWithValue (dart:async/future_impl.dart:539:5)
E/flutter (10296): #17     Future._asyncCompleteWithValue.<anonymous closure> (dart:async/future_impl.dart:577:7)
E/flutter (10296): #18     _rootRun (dart:async/zone.dart:1354:13)
E/flutter (10296): #19     _CustomZone.run (dart:async/zone.dart:1258:19)
E/flutter (10296): #20     _CustomZone.runGuarded (dart:async/zone.dart:1162:7)
E/flutter (10296): #21     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1202:23)
E/flutter (10296): #22     _microtaskLoop (dart:async/schedule_microtask.dart:40:21)
E/flutter (10296): #23     _startMicrotaskLoop (dart:async/schedule_microtask.dart:49:5)
E/flutter (10296): 

flutter doctor

[√] Flutter (Channel beta, 1.26.0-17.6.pre, on Microsoft Windows [Version 10.0.18363.1379], locale en-US)
    • Flutter version 1.26.0-17.6.pre at C:\src\flutter
    • Framework revision a29104a69b (7 days ago), 2021-02-16 09:26:56 -0800
    • Engine revision 21fa8bb99e
    • Dart version 2.12.0 (build 2.12.0-259.12.beta)

[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at C:\Users\Dev-01\AppData\Local\Android\sdk
    • Platform android-30, build-tools 30.0.3
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Android Studio (version 4.1.0)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)

[√] Connected device (3 available)
    • sdk gphone x86 arm (mobile) • emulator-5554 • android-x86    • Android 11 (API 30) (emulator)
    • Chrome (web)                • chrome        • web-javascript • Google Chrome 88.0.4324.182
    • Edge (web)                  • edge          • web-javascript • Microsoft Edge 88.0.705.68

• No issues found!

[lulupointu]

You are right!

I'm fixing this today, I'll close this issue once it's done.

[lulupointu]

This should be fixed with v1.0.0-nullsafety.8

Please reopen this issue if this does not work for you.