freezed
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Published
20 hours ago •
rrousselGit
rrousselGit
Handle cases where a named parameter is dynamic and required
I have this class (related to BLoC) :
part of 'playback_bloc.dart';
@freezed
class PlaybackBlocEvent with _$PlaybackBlocEvent {
const factory PlaybackBlocEvent.init() = _InitEvent;
const factory PlaybackBlocEvent.startPlayback({
required String filePath,
required Function whenFinished,
required currentSelectedTrackIndex, // the error turns out to be because I forgot to specify the type here
}) = _StartPlaybackEvent;
const factory PlaybackBlocEvent.pausePlayback() = _PausePlaybackEvent;
const factory PlaybackBlocEvent.resumePlayback() = _ResumePlaybackEvent;
const factory PlaybackBlocEvent.stopPlayback() = _StopPlaybackEvent;
const factory PlaybackBlocEvent.playbackEnded() = _PlaybackEndedEvent;
}
After alot of time trying to figure out the error, I discovered that I forgot to specify the type of the parameter currentSelectedTrackIndex , but the runner couldn't find this error.
The build runner was generating freezed file with errors and I was not able to run the app, and the error message of the runner is :
[INFO] Generating build script...
[INFO] Generating build script completed, took 749ms
[INFO] Precompiling build script......
[INFO] Precompiling build script... completed, took 13.0s
[INFO] Setting up file watchers...
[INFO] Setting up file watchers completed, took 27ms
[INFO] Waiting for all file watchers to be ready...
[INFO] Waiting for all file watchers to be ready completed, took 176ms
[INFO] Initializing inputs
[INFO] Building new asset graph...
[INFO] Building new asset graph completed, took 1.3s
[INFO] Checking for unexpected pre-existing outputs....
[INFO] Deleting 7 declared outputs which already existed on disk.
[INFO] Checking for unexpected pre-existing outputs. completed, took 22ms
[INFO] Running build...
[INFO] Generating SDK summary...
[INFO] 5.9s elapsed, 0/16 actions completed.
[INFO] Generating SDK summary completed, took 5.8s
[INFO] 7.0s elapsed, 12/22 actions completed.
[INFO] 8.4s elapsed, 12/22 actions completed.
[INFO] 9.5s elapsed, 12/22 actions completed.
[INFO] 10.5s elapsed, 12/22 actions completed.
[INFO] 11.6s elapsed, 12/22 actions completed.
[INFO] 13.2s elapsed, 12/22 actions completed.
[INFO] 15.3s elapsed, 13/22 actions completed.
[INFO] 25.1s elapsed, 13/22 actions completed.
[INFO] 26.2s elapsed, 13/22 actions completed.
[SEVERE] freezed:freezed on lib/presentation/player_screen/bloc/player/playback_bloc.dart:
An error `FormatterException` occurred while formatting the generated source for
`package:sound_changer/presentation/player_screen/bloc/player/playback_bloc.dart`
which was output to
`lib/presentation/player_screen/bloc/player/playback_bloc.freezed.dart`.
This may indicate an issue in the generator, the input source code, or in the
source formatter.
Could not format because the source could not be parsed:
line 198, column 90 of .: The modifier 'required' should be before the modifier 'final'.
╷
198 │ @override final String filePath;@override final Function whenFinished;@override final required currentSelectedTrackIndex;
│ ^^^^^^^^
╵
line 389, column 149 of .: Can't have modifier 'required' here.
╷
389 │ @optionalTypeArgs TResult maybeWhen<TResult extends Object?>({TResult Function()? init,TResult Function( String filePath, Function whenFinished, required currentSelectedTrackIndex)? startPlayback,TResult Function()? pausePlayback,TResult Function()? resumePlayback,TResult Function()? stopPlayback,TResult Function()? playbackEnded,required TResult orElse(),}) {
│ ^^^^^^^^
╵
line 385, column 161 of .: Can't have modifier 'required' here.
╷
385 │ @optionalTypeArgs TResult when<TResult extends Object?>({required TResult Function() init,required TResult Function( String filePath, Function whenFinished, required currentSelectedTrackIndex) startPlayback,required TResult Function() pausePlayback,required TResult Function() resumePlayback,required TResult Function() stopPlayback,required TResult Function() playbackEnded,}) {
│ ^^^^^^^^
╵
line 245, column 108 of .: The modifier 'required' was already specified.
╷
245 │ const factory _StartPlaybackEvent({required String filePath, required Function whenFinished, required required currentSelectedTrackIndex}) = _$_StartPlaybackEvent;
│ ^^^^^^^^
╵
line 553, column 149 of .: Can't have modifier 'required' here.
╷
553 │ @optionalTypeArgs TResult maybeWhen<TResult extends Object?>({TResult Function()? init,TResult Function( String filePath, Function whenFinished, required currentSelectedTrackIndex)? startPlayback,TResult Function()? pausePlayback,TResult Function()? resumePlayback,TResult Function()? stopPlayback,TResult Function()? playbackEnded,required TResult orElse(),}) {
│ ^^^^^^^^
╵
line 549, column 161 of .: Can't have modifier 'required' here.
╷
549 │ @optionalTypeArgs TResult when<TResult extends Object?>({required TResult Function() init,required TResult Function( String filePath, Function whenFinished, required currentSelectedTrackIndex) startPlayback,required TResult Function() pausePlayback,required TResult Function() resumePlayback,required TResult Function() stopPlayback,required TResult Function() playbackEnded,}) {
│ ^^^^^^^^
╵
line 128, column 149 of .: Can't have modifier 'required' here.
╷
128 │ @optionalTypeArgs TResult maybeWhen<TResult extends Object?>({TResult Function()? init,TResult Function( String filePath, Function whenFinished, required currentSelectedTrackIndex)? startPlayback,TResult Function()? pausePlayback,TResult Function()? resumePlayback,TResult Function()? stopPlayback,TResult Function()? playbackEnded,required TResult orElse(),}) {
│ ^^^^^^^^
╵
line 219, column 161 of .: Can't have modifier 'required' here.
╷
219 │ @optionalTypeArgs TResult when<TResult extends Object?>({required TResult Function() init,required TResult Function( String filePath, Function whenFinished, required currentSelectedTrackIndex) startPlayback,required TResult Function() pausePlayback,required TResult Function() resumePlayback,required TResult Function() stopPlayback,required TResult Function() playbackEnded,}) {
│ ^^^^^^^^
╵
line 22, column 106 of .: The modifier 'required' was already specified.
╷
22 │ _StartPlaybackEvent startPlayback({required String filePath, required Function whenFinished, required required currentSelectedTrackIndex}) {
│ ^^^^^^^^
╵
line 49, column 149 of .: Can't have modifier 'required' here.
╷
49 │ @optionalTypeArgs TResult maybeWhen<TResult extends Object?>({TResult Function()? init,TResult Function( String filePath, Function whenFinished, required currentSelectedTrackIndex)? startPlayback,TResult Function()? pausePlayback,TResult Function()? resumePlayback,TResult Function()? stopPlayback,TResult Function()? playbackEnded,required TResult orElse(),}) => throw _privateConstructorUsedError;
│ ^^^^^^^^
╵
(9 more errors...)
[INFO] 28.2s elapsed, 28/43 actions completed.
[INFO] 29.2s elapsed, 36/49 actions completed.
[INFO] 30.4s elapsed, 38/49 actions completed.
[INFO] 31.5s elapsed, 71/76 actions completed.
[INFO] Running build completed, took 31.5s
[INFO] Caching finalized dependency graph...
[INFO] Caching finalized dependency graph completed, took 98ms
[SEVERE] Failed after 31.6s
[INFO] ------------------------------------------------------------------------
[INFO] Starting Build
[INFO] Updating asset graph...
[INFO] Updating asset graph completed, took 19ms
[INFO] Running build...
[SEVERE] freezed:freezed on lib/presentation/player_screen/bloc/player/playback_bloc.dart:
An error `FormatterException` occurred while formatting the generated source for
`package:sound_changer/presentation/player_screen/bloc/player/playback_bloc.dart`
which was output to
`lib/presentation/player_screen/bloc/player/playback_bloc.freezed.dart`.
This may indicate an issue in the generator, the input source code, or in the
source formatter.
Could not format because the source could not be parsed:
line 198, column 90 of .: The modifier 'required' should be before the modifier 'final'.
╷
198 │ @override final String filePath;@override final Function whenFinished;@override final required currentSelectedTrackIndex;
│ ^^^^^^^^
╵
line 389, column 149 of .: Can't have modifier 'required' here.
╷
389 │ @optionalTypeArgs TResult maybeWhen<TResult extends Object?>({TResult Function()? init,TResult Function( String filePath, Function whenFinished, required currentSelectedTrackIndex)? startPlayback,TResult Function()? pausePlayback,TResult Function()? resumePlayback,TResult Function()? stopPlayback,TResult Function()? playbackEnded,required TResult orElse(),}) {
│ ^^^^^^^^
╵
line 385, column 161 of .: Can't have modifier 'required' here.
╷
385 │ @optionalTypeArgs TResult when<TResult extends Object?>({required TResult Function() init,required TResult Function( String filePath, Function whenFinished, required currentSelectedTrackIndex) startPlayback,required TResult Function() pausePlayback,required TResult Function() resumePlayback,required TResult Function() stopPlayback,required TResult Function() playbackEnded,}) {
│ ^^^^^^^^
╵
line 245, column 108 of .: The modifier 'required' was already specified.
╷
245 │ const factory _StartPlaybackEvent({required String filePath, required Function whenFinished, required required currentSelectedTrackIndex}) = _$_StartPlaybackEvent;
│ ^^^^^^^^
╵
line 553, column 149 of .: Can't have modifier 'required' here.
╷
553 │ @optionalTypeArgs TResult maybeWhen<TResult extends Object?>({TResult Function()? init,TResult Function( String filePath, Function whenFinished, required currentSelectedTrackIndex)? startPlayback,TResult Function()? pausePlayback,TResult Function()? resumePlayback,TResult Function()? stopPlayback,TResult Function()? playbackEnded,required TResult orElse(),}) {
│ ^^^^^^^^
╵
line 549, column 161 of .: Can't have modifier 'required' here.
╷
549 │ @optionalTypeArgs TResult when<TResult extends Object?>({required TResult Function() init,required TResult Function( String filePath, Function whenFinished, required currentSelectedTrackIndex) startPlayback,required TResult Function() pausePlayback,required TResult Function() resumePlayback,required TResult Function() stopPlayback,required TResult Function() playbackEnded,}) {
│ ^^^^^^^^
╵
line 128, column 149 of .: Can't have modifier 'required' here.
╷
128 │ @optionalTypeArgs TResult maybeWhen<TResult extends Object?>({TResult Function()? init,TResult Function( String filePath, Function whenFinished, required currentSelectedTrackIndex)? startPlayback,TResult Function()? pausePlayback,TResult Function()? resumePlayback,TResult Function()? stopPlayback,TResult Function()? playbackEnded,required TResult orElse(),}) {
│ ^^^^^^^^
╵
line 219, column 161 of .: Can't have modifier 'required' here.
╷
219 │ @optionalTypeArgs TResult when<TResult extends Object?>({required TResult Function() init,required TResult Function( String filePath, Function whenFinished, required currentSelectedTrackIndex) startPlayback,required TResult Function() pausePlayback,required TResult Function() resumePlayback,required TResult Function() stopPlayback,required TResult Function() playbackEnded,}) {
│ ^^^^^^^^
╵
line 22, column 106 of .: The modifier 'required' was already specified.
╷
22 │ _StartPlaybackEvent startPlayback({required String filePath, required Function whenFinished, required required currentSelectedTrackIndex}) {
│ ^^^^^^^^
╵
line 49, column 149 of .: Can't have modifier 'required' here.
╷
49 │ @optionalTypeArgs TResult maybeWhen<TResult extends Object?>({TResult Function()? init,TResult Function( String filePath, Function whenFinished, required currentSelectedTrackIndex)? startPlayback,TResult Function()? pausePlayback,TResult Function()? resumePlayback,TResult Function()? stopPlayback,TResult Function()? playbackEnded,required TResult orElse(),}) => throw _privateConstructorUsedError;
│ ^^^^^^^^
╵
(9 more errors...)
[INFO] Running build completed, took 968ms
[INFO] Caching finalized dependency graph...
[INFO] Caching finalized dependency graph completed, took 36ms
[SEVERE] Failed after 1.0s
This may indicate an issue in the generator, the input source code, or in the source formatter. Could not format because the source could not be parsed:
comes from source_gen
line 198, column 90 of .: The modifier 'required' should be before the modifier 'final'.
comes from analyzer
Better error messages in this case would be awesome, but I think this improvement has to happen in the analyzer package.
This looks like a bug in Freezed. It shouldn't cause a problem Although it's minor.
