Json_serializable.dart: Error while generating code in package, but works OK when in app (The getter 'type' isn't defined for the class 'Element')
I have several classes that can be generated flawlessly when placed in main app directory but generation fails when placed in package. Of course I run flutter pub run build_runner build --define "json_serializable=any_map=true" --verbose in respective directories i.e. in app or in package.
Both app and package have the same dependencies in pubspec.yaml.
Package was generated today with command: flutter create --template=package package
Already tried: flutter clean, removing .dart_tool, build_runner clean.
Output of flutter pub run build_runner build --define "json_serializable=any_map=true" --verbose:
[INFO] Generating build script...
[INFO] Generating build script completed, took 427ms
[INFO] Creating build script snapshot......
[INFO] Creating build script snapshot... completed, took 7.3s
[SEVERE] Failed to snapshot build script .dart_tool/build/entrypoint/build.dart.
This is likely caused by a misconfigured builder definition.
[SEVERE] file:///Users/dominik/Library/flutter/.pub-cache/hosted/pub.dartlang.org/json_serializable-3.2.0/lib/src/field_helpers.dart:40:64: Error: The getter 'type' isn't defined for the class 'Element'. - 'Element' is from 'package:analyzer/dart/element/element.dart' ('file:///Users/dominik/Library/flutter/.pub-cache/hosted/pub.dartlang.org/analyzer-0.37.1/lib/dart/element/element.dart').Try correcting the name to the name of an existing getter, or defining a getter or field named 'type'. final checkerA = TypeChecker.fromStatic(a.enclosingElement.type); ^^^^file:///Users/dominik/Library/flutter/.pub-cache/hosted/pub.dartlang.org/json_serializable-3.2.0/lib/src/field_helpers.dart:50:66: Error: The getter 'type' isn't defined for the class 'Element'. - 'Element' is from 'package:analyzer/dart/element/element.dart' ('file:///Users/dominik/Library/flutter/.pub-cache/hosted/pub.dartlang.org/analyzer-0.37.1/lib/dart/element/element.dart').Try correcting the name to the name of an existing getter, or defining a getter or field named 'type'. final checkerB = TypeChecker.fromStatic(b.enclosingElement.type); ^^^^
pub failed (78)
#0 throwToolExit (package:flutter_tools/src/base/common.dart:28:3)
#1 pub (package:flutter_tools/src/dart/pub.dart:173:5)
<asynchronous suspension>
#2 PackagesForwardCommand.runCommand (package:flutter_tools/src/commands/packages.dart:196:11)
<asynchronous suspension>
#3 FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:478:18)
<asynchronous suspension>
#4 FlutterCommand.run.<anonymous closure> (package:flutter_tools/src/runner/flutter_command.dart:383:33)
<asynchronous suspension>
#5 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:153:29)
<asynchronous suspension>
#6 _rootRun (dart:async/zone.dart:1124:13)
#7 _CustomZone.run (dart:async/zone.dart:1021:19)
#8 _runZoned (dart:async/zone.dart:1516:10)
#9 runZoned (dart:async/zone.dart:1463:12)
#10 AppContext.run (package:flutter_tools/src/base/context.dart:152:18)
<asynchronous suspension>
#11 FlutterCommand.run (package:flutter_tools/src/runner/flutter_command.dart:375:20)
#12 CommandRunner.runCommand (package:args/command_runner.dart:197:27)
<asynchronous suspension>
#13 FlutterCommandRunner.runCommand.<anonymous closure> (package:flutter_tools/src/runner/flutter_command_runner.dart:396:21)
<asynchronous suspension>
#14 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:153:29)
<asynchronous suspension>
#15 _rootRun (dart:async/zone.dart:1124:13)
#16 _CustomZone.run (dart:async/zone.dart:1021:19)
#17 _runZoned (dart:async/zone.dart:1516:10)
#18 runZoned (dart:async/zone.dart:1463:12)
#19 AppContext.run (package:flutter_tools/src/base/context.dart:152:18)
<asynchronous suspension>
#20 FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:356:19)
<asynchronous suspension>
#21 CommandRunner.run.<anonymous closure> (package:args/command_runner.dart:112:25)
#22 new Future.sync (dart:async/future.dart:224:31)
#23 CommandRunner.run (package:args/command_runner.dart:112:14)
#24 FlutterCommandRunner.run (package:flutter_tools/src/runner/flutter_command_runner.dart:242:18)
#25 run.<anonymous closure>.<anonymous closure> (package:flutter_tools/runner.dart:62:22)
<asynchronous suspension>
#26 _rootRun (dart:async/zone.dart:1124:13)
#27 _CustomZone.run (dart:async/zone.dart:1021:19)
#28 _runZoned (dart:async/zone.dart:1516:10)
#29 runZoned (dart:async/zone.dart:1500:12)
#30 run.<anonymous closure> (package:flutter_tools/runner.dart:60:18)
<asynchronous suspension>
#31 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:153:29)
<asynchronous suspension>
#32 _rootRun (dart:async/zone.dart:1124:13)
#33 _CustomZone.run (dart:async/zone.dart:1021:19)
#34 _runZoned (dart:async/zone.dart:1516:10)
#35 runZoned (dart:async/zone.dart:1463:12)
#36 AppContext.run (package:flutter_tools/src/base/context.dart:152:18)
<asynchronous suspension>
#37 runInContext (package:flutter_tools/src/context_runner.dart:56:24)
<asynchronous suspension>
#38 run (package:flutter_tools/runner.dart:51:10)
#39 main (package:flutter_tools/executable.dart:62:9)
<asynchronous suspension>
#40 main (file:///Users/dominik/Library/flutter/packages/flutter_tools/bin/flutter_tools.dart:8:3)
#41 _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:299:32)
#42 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:172:12)
I have following structure of the app:
- app
- lib
- model
- file.dart <- works OK when placed here
- file.g.dart
- package
- lib
- model
- file.dart <- fails when placed here
- file.g.dart <- it's not generated
Flutter version:
Flutter 1.7.8+hotfix.4 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 20e59316b8 (4 weeks ago) • 2019-07-18 20:04:33 -0700
Engine • revision fee001c93f
Tools • Dart 2.4.0
Output of flutter packages pub run build_runner clean
[WARNING] Deleting cache and generated source files.
This shouldn't be necessary for most applications, unless you have made intentional edits to generated files (i.e. for testing). Consider filing a bug at https://github.com/dart-lang/build/issues/new if you are using this to work around an apparent (and reproducible) bug.
[INFO] Cleaning up source outputs...
[WARNING] No asset graph found. Skipping cleanup of generated files in source directories.
[INFO] Cleaning up source outputs completed, took 4ms
[INFO] Cleaning up cache directory...
[INFO] Cleaning up cache directory completed, took 4ms
Output of: flutter packages pub run build_runner build --delete-conflicting-outputs
[INFO] Generating build script...
[INFO] Generating build script completed, took 325ms
[INFO] Creating build script snapshot......
[INFO] Creating build script snapshot... completed, took 7.4s
[SEVERE] Failed to snapshot build script .dart_tool/build/entrypoint/build.dart.
This is likely caused by a misconfigured builder definition.
[SEVERE] file:///Users/dominik/Library/flutter/.pub-cache/hosted/pub.dartlang.org/json_serializable-3.2.0/lib/src/field_helpers.dart:40:64: Error: The getter 'type' isn't defined for the class 'Element'. - 'Element' is from 'package:analyzer/dart/element/element.dart' ('file:///Users/dominik/Library/flutter/.pub-cache/hosted/pub.dartlang.org/analyzer-0.37.1/lib/dart/element/element.dart').Try correcting the name to the name of an existing getter, or defining a getter or field named 'type'. final checkerA = TypeChecker.fromStatic(a.enclosingElement.type); ^^^^file:///Users/dominik/Library/flutter/.pub-cache/hosted/pub.dartlang.org/json_serializable-3.2.0/lib/src/field_helpers.dart:50:66: Error: The getter 'type' isn't defined for the class 'Element'. - 'Element' is from 'package:analyzer/dart/element/element.dart' ('file:///Users/dominik/Library/flutter/.pub-cache/hosted/pub.dartlang.org/analyzer-0.37.1/lib/dart/element/element.dart').Try correcting the name to the name of an existing getter, or defining a getter or field named 'type'. final checkerB = TypeChecker.fromStatic(b.enclosingElement.type); ^^^^
pub finished with exit code 78
My solution now is to generate files in app directory and then copy them to package. Do you know what may be wrong here?
orestesgaolin
All 11 comments
I also have such a problem and cannot find a solution
ozeranskiy
on 14 Aug 2019
👍3
Same
sandros06
on 14 Aug 2019
👍1
my sample model
import 'package:json_annotation/json_annotation.dart';
part 'user.g.dart';
@JsonSerializable()
class User {
final int id;
final String name;
final String username;
final String email;
User(this.id, this.name, this.username, this.email);
factory User.fromJson(Map<String, dynamic> json) => _$UserFromJson(json);
Map<String, dynamic> toJson() => _$UserToJson(this);
}
my output
[INFO] Generating build script...
[INFO] Generating build script completed, took 394ms
[INFO] Creating build script snapshot......
[INFO] Creating build script snapshot... completed, took 6.7s
[SEVERE] Failed to snapshot build script .dart_tool/build/entrypoint/build.dart.
This is likely caused by a misconfigured builder definition.
[SEVERE] file:///Users/sergejozeranskij/development/flutter/.pub-cache/hosted/pub.dartlang.org/json_serializable-3.2.0/lib/src/field_helpers.dart:40:64: Error: The getter 'type' isn't defined for the class 'Element'. - 'Element' is from 'package:analyzer/dart/element/element.dart' ('file:///Users/sergejozeranskij/development/flutter/.pub-cache/hosted/pub.dartlang.org/analyzer-0.37.1/lib/dart/element/element.dart').Try correcting the name to the name of an existing getter, or defining a getter or field named 'type'. final checkerA = TypeChecker.fromStatic(a.enclosingElement.type); ^^^^file:///Users/sergejozeranskij/development/flutter/.pub-cache/hosted/pub.dartlang.org/json_serializable-3.2.0/lib/src/field_helpers.dart:50:66: Error: The getter 'type' isn't defined for the class 'Element'. - 'Element' is from 'package:analyzer/dart/element/element.dart' ('file:///Users/sergejozeranskij/development/flutter/.pub-cache/hosted/pub.dartlang.org/analyzer-0.37.1/lib/dart/element/element.dart').Try correcting the name to the name of an existing getter, or defining a getter or field named 'type'. final checkerB = TypeChecker.fromStatic(b.enclosingElement.type); ^^^^
pub failed (78)
👍5
🚀1
❤1
🎉1
solved the problem by installing the previous version analyzer:
dependencies:
analyzer: 0.37.0
👍2
solved the problem by installing the previous version analyzer:
dependencies: analyzer: 0.37.0
Thank you, adding analyzer without the version solved my problem.
orestesgaolin
on 14 Aug 2019
👍1
FYI analyzer 0.37.1+1 was just released that should also address this!
kevmoo
on 14 Aug 2019
👍3
I love you guys!
e200
on 30 Dec 2019
👍1
😊
On Mon, Dec 30, 2019 at 2:11 AM Eleandro Duzentos notifications@github.com
wrote:
I love you guys!
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kevmoo
on 30 Dec 2019
The only solution that worked for me was to delete manually all *.g.dart files and then run flutter pub run build_runner build.
joaquini
on 3 Aug 2020
In my case output looks like this, even if i add analyzer package in my pubspec.yaml file.
[INFO] Generating build script...
[INFO] Generating build script completed, took 306ms
[INFO] Creating build script snapshot......
[INFO] Creating build script snapshot... completed, took 7.5s
[SEVERE] Failed to snapshot build script .dart_tool/build/entrypoint/build.dart.
This is likely caused by a misconfigured builder definition.
[SEVERE] ../../sdk/flutter/.pub-cache/hosted/pub.dartlang.org/retrofit_generator-1.1.0/lib/src/generator.dart:700:39: Error: The method 'getDisplayString' isn't defined for the class 'DartType'. - 'DartType' is from 'package:analyzer/dart/element/type.dart' ('../../sdk/flutter/.pub-cache/hosted/pub.dartlang.org/analyzer-0.37.0/lib/dart/element/type.dart').Try correcting the name to the name of an existing method, or defining a method named 'getDisplayString'. return refer(constant.typeValue.getDisplayString());
darshakpranpariya
on 26 Aug 2020
@darshakpranpariya – it seems you don't have the right version of pkg:analyzer
kevmoo
on 26 Aug 2020
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Most helpful comment
my sample model
my output