🐛 [FIREBASE_CORE_WEB]/[FIREBASE_AUTH_WEB] The argument type 'Future<void> Function()' can't be assigned to the parameter type 'Future<void> Function(App)?'

[phaylali]

Bug report

Debugging a flutter app on the web, that uses firebase_core_web fails to run

Steps to reproduce

Steps to reproduce the behavior:

firebase_core_web and firebase_firebase_auth_web
are usually conflicting with flutter_localizations since it is depending on intl 0.18 but those firebase packages reverted to intl: 0.17

there is a lot of problems with the latest releases

Expected behavior

to just work

Sample project

Providing a minimal example project which demonstrates the bug in isolation from your main App greatly enhances the chance of a timely fix.
Please link to the public repository URL.

---

Additional context

Launching lib\main.dart on Chrome in debug mode...
main.dart:1
: Error: The argument type 'Future<void> Function()' can't be assigned to the parameter type 'Future<void> Function(App)?'.
firebase_auth_web.dart:92
 - 'Future' is from 'dart:async'.
- 'App' is from 'package:firebase_core_web/src/interop/app.dart' ('../../../AppData/Local/Pub/Cache/hosted/pub.dev/firebase_core_web-2.2.2/lib/src/interop/app.dart').
app.dart:1
    FirebaseCoreWeb.registerService('auth', () async {
                                            ^

Failed to compile application.
Exited (sigterm)

---

Flutter doctor

Run flutter doctor and paste the output below:

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Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel master, 3.9.0-1.0.pre.115, on Microsoft Windows [Version 10.0.22621.1344], locale en-GB)
[√] Windows Version (Installed version of Windows is version 10 or higher)
[√] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
[√] Chrome - develop for the web
[√] Visual Studio - develop for Windows (Visual Studio Community 2022 17.3.3)
[!] Android Studio (version 2021.2)
    X Unable to determine bundled Java version.
[√] Android Studio (version 2022.1)
[√] VS Code (version 1.76.1)
[√] Connected device (3 available)
[√] Network resources

! Doctor found issues in 1 category.
PS C:\Users\elfai\Documents\APPS\admin> flutter doctor -v 
[√] Flutter (Channel master, 3.9.0-1.0.pre.115, on Microsoft Windows [Version 10.0.22621.1344], locale en-GB)
    • Flutter version 3.9.0-1.0.pre.115 on channel master at C:\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision eb3d317ea0 (2 days ago), 2023-03-08 16:52:05 -0800
    • Engine revision 098fd5884e
    • Dart version 3.0.0 (build 3.0.0-311.0.dev)
    • DevTools version 2.22.2

[√] Windows Version (Installed version of Windows is version 10 or higher)

[√] Android toolchain - develop for Android devices (Android SDK version 33.0.2)
    • Android SDK at C:\Users\elfai\AppData\Local\Android\Sdk
    • Platform android-33, build-tools 33.0.2
    • Java binary at: C:\Users\elfai\.jdks\openjdk-19.0.2\bin\java
    • Java version OpenJDK Runtime Environment (build 19.0.2+7-44)
    • All Android licenses accepted.

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

[√] Visual Studio - develop for Windows (Visual Studio Community 2022 17.3.3)
    • Visual Studio at C:\Program Files\Microsoft Visual Studio\2022\Community
    • Visual Studio Community 2022 version 17.3.32825.248
    • Windows 10 SDK version 10.0.19041.0

[!] Android Studio (version 2021.2)
    • 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
    X Unable to determine bundled Java version.
    • Try updating or re-installing Android Studio.

[√] Android Studio (version 2022.1)
    • Android Studio at C:\Users\elfai\AppData\Local\JetBrains\Toolbox\apps\AndroidStudio\ch-0\221.6008.13.2211.9619390
    • Flutter plugin version 72.1.2
    • Dart plugin version 221.6096
    • Java version OpenJDK Runtime Environment (build 11.0.15+0-b2043.56-9505619)

[√] VS Code (version 1.76.1)
    • VS Code at C:\Users\elfai\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.60.0

[√] Connected device (3 available)
    • Windows (desktop) • windows • windows-x64    • Microsoft Windows [Version 10.0.22621.1344]
    • Chrome (web)      • chrome  • web-javascript • Google Chrome 111.0.5563.64
    • Edge (web)        • edge    • web-javascript • Microsoft Edge 110.0.1587.63

[√] Network resources
    • All expected network resources are available.

! Doctor found issues in 1 category.

---

Flutter dependencies

Run flutter pub deps -- --style=compact and paste the output below:

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Dart SDK 3.0.0-311.0.dev
Flutter SDK 3.9.0-1.0.pre.115
admin 1.0.0+1

dependencies:
- cloud_firestore 4.4.4 [cloud_firestore_platform_interface cloud_firestore_web collection firebase_core firebase_core_platform_interface flutter meta]
- country_flags 1.1.0 [flutter flutter_svg]
- equatable 2.0.5 [collection meta]
- firebase_auth 4.2.2 [firebase_auth_platform_interface firebase_auth_web firebase_core firebase_core_platform_interface flutter meta]
- firebase_core 2.7.1 [firebase_core_platform_interface firebase_core_web flutter meta]
- firebase_core_web 2.2.2 [firebase_core_platform_interface flutter flutter_web_plugins js meta]
- flex_color_scheme 7.0.0-dev.2 [flex_seed_scheme flutter meta]
- flutter 0.0.0 [characters collection js material_color_utilities meta vector_math sky_engine]
- flutter_date_pickers 0.4.1 [flutter intl flutter_localizations]
- flutter_localizations 0.0.0 [flutter intl characters clock collection js material_color_utilities meta path vector_math]
- flutter_riverpod 2.3.1 [collection flutter meta riverpod state_notifier]
- flutter_web_plugins 0.0.0 [flutter js characters collection material_color_utilities meta vector_math]
- freezed 2.3.2 [analyzer build build_config collection meta source_gen freezed_annotation json_annotation]
- go_router 6.2.0 [collection flutter flutter_web_plugins logging meta]
- google_fonts 4.0.3 [flutter http path_provider crypto]
- hooks_riverpod 2.3.1 [collection flutter flutter_hooks flutter_riverpod riverpod state_notifier]
- intl 0.18.0 [clock meta path]
- pdf 3.9.0 [archive barcode bidi crypto image meta path_parsing vector_math xml]
- printing 5.10.1 [ffi flutter flutter_web_plugins http image js meta pdf plugin_platform_interface]
- share_plus 6.3.1 [cross_file meta mime flutter flutter_web_plugins share_plus_platform_interface file url_launcher_web url_launcher_windows url_launcher_linux url_launcher_platform_interface ffi win32]
- shared_preferences 2.0.18 [flutter shared_preferences_android shared_preferences_foundation shared_preferences_linux shared_preferences_platform_interface shared_preferences_web shared_preferences_windows]       
- unicons 2.1.0 [flutter]

dev dependencies:
- flutter_lints 2.0.1 [lints]
- flutter_test 0.0.0 [flutter test_api path fake_async clock stack_trace vector_math async boolean_selector characters collection js matcher material_color_utilities meta source_span stream_channel string_scanner term_glyph]

transitive dependencies:
- _fe_analyzer_shared 55.0.0 [meta]
- _flutterfire_internals 1.0.17 [collection firebase_core firebase_core_platform_interface flutter meta]
- analyzer 5.7.1 [_fe_analyzer_shared collection convert crypto glob meta package_config path pub_semver source_span watcher yaml]
- archive 3.3.6 [crypto path pointycastle]
- args 2.4.0
- async 2.10.0 [collection meta]
- barcode 2.2.3 [meta qr]
- bidi 2.0.6
- boolean_selector 2.1.1 [source_span string_scanner]
- build 2.3.1 [analyzer async convert crypto glob logging meta path]
- build_config 1.1.1 [checked_yaml json_annotation path pubspec_parse yaml]
- characters 1.3.0
- checked_yaml 2.0.2 [json_annotation source_span yaml]
- clock 1.1.1
- cloud_firestore_platform_interface 5.11.4 [_flutterfire_internals collection firebase_core flutter meta plugin_platform_interface]
- cloud_firestore_web 3.3.4 [_flutterfire_internals cloud_firestore_platform_interface collection firebase_core firebase_core_web flutter flutter_web_plugins js]
- collection 1.17.1
- convert 3.1.1 [typed_data]
- cross_file 0.3.3+4 [js meta]
- crypto 3.0.2 [typed_data]
- dart_style 2.2.5 [analyzer args path pub_semver source_span]
- fake_async 1.3.1 [clock collection]
- ffi 2.0.1
- file 6.1.4 [meta path]
- firebase_auth_platform_interface 6.11.12 [_flutterfire_internals collection firebase_core flutter meta plugin_platform_interface]
- firebase_auth_web 5.2.2 [firebase_auth_platform_interface firebase_core firebase_core_web flutter flutter_web_plugins http_parser intl js meta]
- firebase_core_platform_interface 4.5.3 [collection flutter flutter_test meta plugin_platform_interface]
- flex_seed_scheme 1.2.2 [flutter material_color_utilities meta]
- flutter_hooks 0.18.6 [flutter]
- flutter_svg 2.0.3 [flutter vector_graphics vector_graphics_codec vector_graphics_compiler]
- freezed_annotation 2.2.0 [collection json_annotation meta]
- glob 2.1.1 [async collection file path string_scanner]
- http 0.13.5 [async http_parser meta path]
- http_parser 4.0.2 [collection source_span string_scanner typed_data]
- image 4.0.15 [archive meta xml]
- js 0.6.7 [meta]
- json_annotation 4.8.0 [meta]
- lints 2.0.1
- logging 1.1.1
- matcher 0.12.14 [meta stack_trace]
- material_color_utilities 0.2.0
- meta 1.9.0
- mime 1.0.4
- package_config 2.1.0 [path]
- path 1.8.3
- path_parsing 1.0.1 [vector_math meta]
- path_provider 2.0.13 [flutter path_provider_android path_provider_foundation path_provider_linux path_provider_platform_interface path_provider_windows]
- path_provider_android 2.0.24 [flutter path_provider_platform_interface]
- path_provider_foundation 2.1.3 [flutter path_provider_platform_interface]
- path_provider_linux 2.1.10 [ffi flutter path path_provider_platform_interface xdg_directories]
- path_provider_platform_interface 2.0.6 [flutter platform plugin_platform_interface]
- path_provider_windows 2.1.5 [ffi flutter path path_provider_platform_interface win32]
- petitparser 5.3.0 [meta]
- platform 3.1.0
- plugin_platform_interface 2.1.4 [meta]
- pointycastle 3.6.2 [collection convert js]
- process 4.2.4 [file path platform]
- pub_semver 2.1.3 [collection meta]
- pubspec_parse 1.2.2 [checked_yaml collection json_annotation pub_semver yaml]
- qr 3.0.1 [meta]
- riverpod 2.3.1 [collection meta stack_trace state_notifier]
- share_plus_platform_interface 3.2.0 [cross_file flutter meta mime plugin_platform_interface path_provider uuid]
- shared_preferences_android 2.0.17 [flutter shared_preferences_platform_interface]
- shared_preferences_foundation 2.1.5 [flutter shared_preferences_platform_interface]
- shared_preferences_linux 2.1.5 [file flutter path path_provider_linux path_provider_platform_interface shared_preferences_platform_interface]
- shared_preferences_platform_interface 2.1.1 [flutter plugin_platform_interface]
- shared_preferences_web 2.0.6 [flutter flutter_web_plugins shared_preferences_platform_interface]
- shared_preferences_windows 2.1.5 [file flutter path path_provider_platform_interface path_provider_windows shared_preferences_platform_interface]
- sky_engine 0.0.99
- source_gen 1.2.7 [analyzer async build dart_style glob path source_span yaml]
- source_span 1.9.1 [collection path term_glyph]
- stack_trace 1.11.0 [path]
- state_notifier 0.7.2+1 [meta]
- stream_channel 2.1.1 [async]
- string_scanner 1.2.0 [source_span]
- term_glyph 1.2.1
- test_api 0.4.18 [async boolean_selector collection meta source_span stack_trace stream_channel string_scanner term_glyph matcher]
- typed_data 1.3.1 [collection]
- url_launcher_linux 3.0.4 [flutter url_launcher_platform_interface]
- url_launcher_platform_interface 2.1.2 [flutter plugin_platform_interface]
- url_launcher_web 2.0.16 [flutter flutter_web_plugins url_launcher_platform_interface]
- url_launcher_windows 3.0.5 [flutter url_launcher_platform_interface]
- uuid 3.0.7 [crypto]
- vector_graphics 1.1.3 [flutter vector_graphics_codec]
- vector_graphics_codec 1.1.3
- vector_graphics_compiler 1.1.3 [args meta path_parsing xml vector_graphics_codec]
- vector_math 2.1.4
- watcher 1.0.2 [async path]
- win32 3.1.3 [ffi]
- xdg_directories 1.0.0 [meta path process]
- xml 6.2.2 [collection meta petitparser]
- yaml 3.1.1 [collection source_span string_scanner]

---

[phaylali]

4.2.2 and 5.2.2 doesn't produce an error but newer packages versions do
firebase_auth 4.2.2 (4.2.10 available) firebase_auth_web 5.2.2 (5.2.9 available)

[darshankawar]

@phaylali
I am unable to replicate this issue using the firebase_auth plugin example. I updated firebase_auth, firebse_core to latest versions and also added firebase_auth_web and firebase_core_web which are pointing to latest versions as well and then ran on web which compiled the app properly.

Do you have exact steps to replicate that we can use to verify this ?

[Rexios80]

Add the following to your pubspec.yaml

dependency_overrides:
  intl: ^0.18.0

Then do a flutter pub upgrade

The newer flutterfire versions aren't resolvable due to continuing conflicts with intl versioning

When #10317 gets released, this issue should go away

[phaylali]

Resolving dependencies... Because admin depends on flutter_localizations from sdk which depends on intl 0.18.0, intl 0.18.0 is required. So, because admin depends on intl ^0.17.0, version solving failed. exit code 1

so, no it's not working

I used a workaround of setting fixed versions for firebase dependencies (which is not a fix)

dependencies:
  firebase_core: 
  cloud_firestore: 
  firebase_auth: 4.2.2
  firebase_auth_web: 5.2.2
  firebase_core_web: 2.2.1

latest releases of packages are mostly depending on intl 0.18.0 , except firebase depending on 0.17.0 , a version that is 2 years old

[Rexios80]

FlutterFire cannot update to 0.18.0 until flutter_localizations does. That's on the Flutter team, not the FlutterFire maintainers.

[phaylali]

FlutterFire cannot update to 0.18.0 until flutter_localizations does. That's on the Flutter team, not the FlutterFire maintainers.

flutter master channel is already using flutter_localizations that depend on 0.18.0

[Rexios80]

That doesn't help the majority of flutter users which use stable. Until the flutter team releases the update to stable this isn't fixable without a workaround.

[darshankawar]

There's a draft PR to update intl to 0.18.0 #10443 in which you can follow-up for further updates.

Check this comment for workaround.