[firebase_database_web]: WASM dry-run warning at database.dart:680 despite js_interop migration

[jpiabrantes]

Is there an existing issue for this?

• [x] I have searched the existing issues.

Which plugins are affected?

Database

Which platforms are affected?

Web

Description

When running flutter build web --release, the WASM dry-run reports an invalid_runtime_check_with_js_interop_types lint violation in firebase_database_web:

file:///Users/[...]/.pub-cache/hosted/pub.dev/firebase_database_web-0.2.7+1/lib/src/interop/database.dart 680:28 -
invalid_runtime_check_with_js_interop_types lint violation: Cast from 'JSAny?' to 'DatabaseReference' casts a JS interop value to a Dart type, which might not be platform-consistent. (8)

This persists despite:

• The js_interop migration being marked complete in #12466 (via #12530)
• The "more explicit interop types" fix in #17823 being merged and released in 0.2.7

Reproducing the issue

Add firebase_database: ^12.1.0 to pubspec.yaml Run flutter build web --release Observe the WASM dry-run warning

Firebase Core version

4.2.1

Flutter Version

3.38.3

Relevant Log Output

Wasm dry run findings:
Found incompatibilities with WebAssembly.

file:///Users/joaoabrantis/.pub-cache/hosted/pub.dev/firebase_database_web-0.2.7+1/lib/src/interop/database.dart 680:28 -
invalid_runtime_check_with_js_interop_types lint violation: Cast from 'JSAny?' to 'DatabaseReference' casts a JS interop value to a Dart
type, which might not be platform-consistent. (8)


Consider addressing these issues to enable wasm builds. See docs for more info: https://docs.flutter.dev/platform-integration/web/wasm


Use --no-wasm-dry-run to disable these warnings.

Flutter dependencies

Expand Flutter dependencies snippet

Dart SDK 3.10.1
Flutter SDK 3.38.3
alpacalaw 1.0.7+1

dependencies:
- auto_size_text 3.0.0 [flutter]
- cloud_firestore 6.1.0 [cloud_firestore_platform_interface cloud_firestore_web collection firebase_core firebase_core_platform_interface flutter meta]
- cupertino_icons 1.0.8
- diacritic 0.1.6
- file_picker 9.2.3 [flutter flutter_web_plugins flutter_plugin_android_lifecycle plugin_platform_interface ffi path win32 cross_file web]
- firebase_analytics 12.0.4 [firebase_analytics_platform_interface firebase_analytics_web firebase_core firebase_core_platform_interface flutter]
- firebase_auth 6.1.2 [firebase_auth_platform_interface firebase_auth_web firebase_core firebase_core_platform_interface flutter meta]
- firebase_core 4.2.1 [firebase_core_platform_interface firebase_core_web flutter meta]
- firebase_database 12.1.0 [firebase_core firebase_core_platform_interface firebase_database_platform_interface firebase_database_web flutter]
- firebase_storage 13.0.4 [firebase_core firebase_core_platform_interface firebase_storage_platform_interface firebase_storage_web flutter]
- flutter 0.0.0 [characters collection material_color_utilities meta vector_math sky_engine]
- flutter_bloc 9.1.1 [bloc flutter provider]
- flutter_markdown 0.6.23 [flutter markdown meta path]
- flutter_svg 2.2.3 [flutter http vector_graphics vector_graphics_codec vector_graphics_compiler]
- flutter_web_plugins 0.0.0 [flutter]
- flutter_widget_from_html 0.10.6 [flutter flutter_widget_from_html_core fwfh_cached_network_image fwfh_chewie fwfh_just_audio fwfh_svg fwfh_url_launcher fwfh_webview html]
- go_router 17.0.0 [collection flutter flutter_web_plugins logging meta]
- google_fonts 6.3.3 [crypto flutter http path_provider]
- http 1.6.0 [async http_parser meta web]
- intl 0.20.2 [clock meta path]
- json_annotation 4.9.0 [meta]
- markdown_widget 2.3.2+8 [flutter markdown highlight flutter_highlight url_launcher visibility_detector scroll_to_index]
- responsive_framework 1.5.1 [flutter collection]
- shared_preferences 2.5.3 [flutter shared_preferences_android shared_preferences_foundation shared_preferences_linux shared_preferences_platform_interface shared_preferences_web shared_preferences_windows]
- url_launcher 6.3.2 [flutter url_launcher_android url_launcher_ios url_launcher_linux url_launcher_macos url_launcher_platform_interface url_launcher_web url_launcher_windows]
- uuid 4.5.2 [crypto meta fixnum]
- web 1.1.1

dev dependencies:
- build_runner 2.10.4 [analyzer args async build build_config build_daemon built_collection built_value code_builder collection convert crypto dart_style glob graphs http_multi_server io json_annotation logging meta mime package_config path pool pub_semver shelf shelf_web_socket stream_transform watcher web_socket_channel yaml]
- flutter_lints 6.0.0 [lints]
- flutter_test 0.0.0 [flutter test_api matcher path fake_async clock stack_trace vector_math leak_tracker_flutter_testing collection meta stream_channel]
- freezed 3.2.3 [analyzer build build_config collection meta source_gen freezed_annotation json_annotation dart_style pub_semver]
- json_serializable 6.11.2 [analyzer async build build_config dart_style json_annotation meta path pub_semver pubspec_parse source_gen source_helper]

transitive dependencies:
- _fe_analyzer_shared 91.0.0 [meta]
- _flutterfire_internals 1.3.64 [collection firebase_core firebase_core_platform_interface flutter meta]
- analyzer 8.4.1 [_fe_analyzer_shared collection convert crypto glob meta package_config path pub_semver source_span watcher yaml]
- args 2.7.0
- async 2.13.0 [collection meta]
- audio_session 0.1.25 [flutter flutter_web_plugins rxdart meta]
- bloc 9.1.0 [meta]
- boolean_selector 2.1.2 [source_span string_scanner]
- build 4.0.3 [analyzer crypto glob logging package_config path]
- build_config 1.2.0 [checked_yaml json_annotation path pubspec_parse]
- build_daemon 4.1.1 [built_collection built_value crypto http_multi_server logging path pool shelf shelf_web_socket stream_transform watcher web_socket_channel]
- built_collection 5.1.1
- built_value 8.12.1 [built_collection collection fixnum meta]
- cached_network_image 3.4.1 [cached_network_image_platform_interface cached_network_image_web flutter flutter_cache_manager octo_image]
- cached_network_image_platform_interface 4.1.1 [flutter flutter_cache_manager]
- cached_network_image_web 1.3.1 [cached_network_image_platform_interface flutter flutter_cache_manager web]
- characters 1.4.0
- checked_yaml 2.0.4 [json_annotation source_span yaml]
- chewie 1.13.0 [cupertino_icons flutter provider video_player wakelock_plus]
- clock 1.1.2
- cloud_firestore_platform_interface 7.0.4 [_flutterfire_internals collection firebase_core flutter meta plugin_platform_interface]
- cloud_firestore_web 5.1.0 [_flutterfire_internals cloud_firestore_platform_interface collection firebase_core firebase_core_web flutter flutter_web_plugins]
- code_builder 4.11.0 [built_collection built_value collection matcher meta]
- collection 1.19.1
- convert 3.1.2 [typed_data]
- cross_file 0.3.5+1 [meta web]
- crypto 3.0.7 [typed_data]
- csslib 1.0.2 [source_span]
- dart_style 3.1.3 [analyzer args collection package_config path pub_semver source_span yaml]
- dbus 0.7.11 [args ffi meta xml]
- fake_async 1.3.3 [clock collection]
- ffi 2.1.4
- file 7.0.1 [meta path]
- firebase_analytics_platform_interface 5.0.4 [_flutterfire_internals firebase_core flutter meta plugin_platform_interface]
- firebase_analytics_web 0.6.1 [_flutterfire_internals firebase_analytics_platform_interface firebase_core firebase_core_web flutter flutter_web_plugins]
- firebase_auth_platform_interface 8.1.4 [_flutterfire_internals collection firebase_core flutter http meta plugin_platform_interface]
- firebase_auth_web 6.1.0 [firebase_auth_platform_interface firebase_core firebase_core_web flutter flutter_web_plugins http_parser meta web]
- firebase_core_platform_interface 6.0.2 [collection flutter flutter_test meta plugin_platform_interface]
- firebase_core_web 3.3.0 [firebase_core_platform_interface flutter flutter_web_plugins meta web]
- firebase_database_platform_interface 0.3.0 [_flutterfire_internals collection firebase_core flutter meta plugin_platform_interface]
- firebase_database_web 0.2.7+1 [collection firebase_core firebase_core_web firebase_database_platform_interface flutter flutter_web_plugins]
- firebase_storage_platform_interface 5.2.15 [_flutterfire_internals collection firebase_core flutter meta plugin_platform_interface]
- firebase_storage_web 3.11.0 [_flutterfire_internals async firebase_core firebase_core_web firebase_storage_platform_interface flutter flutter_web_plugins http meta web]
- fixnum 1.1.1
- flutter_cache_manager 3.4.1 [clock collection file flutter http path path_provider rxdart sqflite uuid]
- flutter_highlight 0.7.0 [flutter highlight]
- flutter_plugin_android_lifecycle 2.0.33 [flutter]
- flutter_widget_from_html_core 0.10.6 [csslib flutter html]
- freezed_annotation 3.1.0 [collection json_annotation meta]
- fwfh_cached_network_image 0.7.0+7 [cached_network_image flutter flutter_cache_manager flutter_widget_from_html_core]
- fwfh_chewie 0.7.1+4 [chewie flutter flutter_widget_from_html_core video_player]
- fwfh_just_audio 0.9.0+3 [flutter flutter_widget_from_html_core just_audio]
- fwfh_svg 0.8.3 [flutter flutter_svg flutter_widget_from_html_core]
- fwfh_url_launcher 0.9.1 [flutter flutter_widget_from_html_core url_launcher]
- fwfh_webview 0.9.0+2 [flutter flutter_widget_from_html_core webview_flutter webview_flutter_android webview_flutter_wkwebview]
- glob 2.1.3 [async collection file path string_scanner]
- graphs 2.3.2 [collection]
- highlight 0.7.0 [collection]
- html 0.15.6 [csslib source_span]
- http_multi_server 3.2.2 [async]
- http_parser 4.1.2 [collection source_span string_scanner typed_data]
- io 1.0.5 [meta path string_scanner]
- just_audio 0.9.46 [just_audio_platform_interface just_audio_web audio_session rxdart path path_provider async uuid crypto meta flutter]
- just_audio_platform_interface 4.6.0 [flutter plugin_platform_interface]
- just_audio_web 0.4.16 [just_audio_platform_interface flutter flutter_web_plugins web synchronized]
- leak_tracker 11.0.2 [clock collection meta path vm_service]
- leak_tracker_flutter_testing 3.0.10 [flutter leak_tracker leak_tracker_testing matcher meta]
- leak_tracker_testing 3.0.2 [leak_tracker matcher meta]
- lints 6.0.0
- logging 1.3.0
- markdown 7.3.0 [args meta]
- matcher 0.12.17 [async meta stack_trace term_glyph test_api]
- material_color_utilities 0.11.1 [collection]
- meta 1.17.0
- mime 2.0.0
- nested 1.0.0 [flutter]
- octo_image 2.1.0 [flutter]
- package_config 2.2.0 [path]
- package_info_plus 9.0.0 [ffi flutter flutter_web_plugins http meta path package_info_plus_platform_interface web win32 clock]
- package_info_plus_platform_interface 3.2.1 [flutter meta plugin_platform_interface]
- path 1.9.1
- path_parsing 1.1.0 [meta vector_math]
- path_provider 2.1.5 [flutter path_provider_android path_provider_foundation path_provider_linux path_provider_platform_interface path_provider_windows]
- path_provider_android 2.2.22 [flutter path_provider_platform_interface]
- path_provider_foundation 2.5.1 [flutter path_provider_platform_interface]
- path_provider_linux 2.2.1 [ffi flutter path path_provider_platform_interface xdg_directories]
- path_provider_platform_interface 2.1.2 [flutter platform plugin_platform_interface]
- path_provider_windows 2.3.0 [ffi flutter path path_provider_platform_interface]
- petitparser 7.0.1 [meta collection]
- platform 3.1.6
- plugin_platform_interface 2.1.8 [meta]
- pool 1.5.2 [async stack_trace]
- provider 6.1.5+1 [collection flutter nested]
- pub_semver 2.2.0 [collection]
- pubspec_parse 1.5.0 [checked_yaml collection json_annotation pub_semver yaml]
- rxdart 0.28.0
- scroll_to_index 3.0.1 [flutter]
- shared_preferences_android 2.4.18 [flutter shared_preferences_platform_interface]
- shared_preferences_foundation 2.5.6 [flutter shared_preferences_platform_interface]
- shared_preferences_linux 2.4.1 [file flutter path path_provider_linux path_provider_platform_interface shared_preferences_platform_interface]
- shared_preferences_platform_interface 2.4.1 [flutter plugin_platform_interface]
- shared_preferences_web 2.4.3 [flutter flutter_web_plugins shared_preferences_platform_interface web]
- shared_preferences_windows 2.4.1 [file flutter path path_provider_platform_interface path_provider_windows shared_preferences_platform_interface]
- shelf 1.4.2 [async collection http_parser path stack_trace stream_channel]
- shelf_web_socket 3.0.0 [shelf stream_channel web_socket_channel]
- sky_engine 0.0.0
- source_gen 4.1.1 [analyzer async build dart_style glob path pub_semver source_span yaml]
- source_helper 1.3.8 [analyzer source_gen]
- source_span 1.10.1 [collection path term_glyph]
- sqflite 2.4.2 [flutter sqflite_android sqflite_darwin sqflite_platform_interface sqflite_common path]
- sqflite_android 2.4.2+2 [flutter sqflite_common path sqflite_platform_interface]
- sqflite_common 2.5.6 [synchronized path meta]
- sqflite_darwin 2.4.2 [flutter sqflite_platform_interface meta sqflite_common path]
- sqflite_platform_interface 2.4.0 [flutter platform sqflite_common plugin_platform_interface meta]
- stack_trace 1.12.1 [path]
- stream_channel 2.1.4 [async]
- stream_transform 2.1.1
- string_scanner 1.4.1 [source_span]
- synchronized 3.4.0
- term_glyph 1.2.2
- test_api 0.7.7 [async boolean_selector collection meta source_span stack_trace stream_channel string_scanner term_glyph]
- typed_data 1.4.0 [collection]
- url_launcher_android 6.3.28 [flutter url_launcher_platform_interface]
- url_launcher_ios 6.3.6 [flutter url_launcher_platform_interface]
- url_launcher_linux 3.2.2 [flutter url_launcher_platform_interface]
- url_launcher_macos 3.2.5 [flutter url_launcher_platform_interface]
- url_launcher_platform_interface 2.3.2 [flutter plugin_platform_interface]
- url_launcher_web 2.4.1 [flutter flutter_web_plugins url_launcher_platform_interface web]
- url_launcher_windows 3.1.5 [flutter url_launcher_platform_interface]
- vector_graphics 1.1.19 [flutter http vector_graphics_codec]
- vector_graphics_codec 1.1.13
- vector_graphics_compiler 1.1.19 [args meta path path_parsing vector_graphics_codec xml]
- vector_math 2.2.0
- video_player 2.10.1 [flutter html video_player_android video_player_avfoundation video_player_platform_interface video_player_web]
- video_player_android 2.8.22 [flutter video_player_platform_interface]
- video_player_avfoundation 2.8.8 [flutter video_player_platform_interface]
- video_player_platform_interface 6.6.0 [flutter plugin_platform_interface]
- video_player_web 2.4.0 [flutter flutter_web_plugins video_player_platform_interface web]
- visibility_detector 0.4.0+2 [flutter]
- vm_service 15.0.2
- wakelock_plus 1.4.0 [flutter flutter_web_plugins meta wakelock_plus_platform_interface win32 dbus package_info_plus web]
- wakelock_plus_platform_interface 1.3.0 [flutter plugin_platform_interface meta]
- watcher 1.1.4 [async path]
- web_socket 1.0.1 [web]
- web_socket_channel 3.0.3 [async crypto stream_channel web web_socket]
- webview_flutter 4.9.0 [flutter webview_flutter_android webview_flutter_platform_interface webview_flutter_wkwebview]
- webview_flutter_android 3.16.9 [flutter webview_flutter_platform_interface]
- webview_flutter_platform_interface 2.14.0 [flutter meta plugin_platform_interface]
- webview_flutter_wkwebview 3.23.4 [flutter meta path webview_flutter_platform_interface]
- win32 5.15.0 [ffi]
- xdg_directories 1.1.0 [meta path]
- xml 6.6.1 [collection meta petitparser]
- yaml 3.1.3 [collection source_span string_scanner]

Additional context and comments

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