Web compiler crash

[llfbandit]

• Dart SDK 3.1.1 (shipped with flutter 3.13.3)
• OS: Windows 11

Log

Compiling lib/main.dart for the Web...
Target dart2js failed: ProcessException: Process exited abnormally:
../../../../../../../AppData/Local/Pub/Cache/hosted/pub.dev/go_router-10.1.2/lib/src/information_provider.dart:125:34:
Warning: Operand of null-aware operation '!' has type 'String' which excludes null.
location: routeInformation.location!,
^
../../../../../../../AppData/Local/Pub/Cache/hosted/pub.dev/go_router-10.1.2/lib/src/parser.dart:87:50:
Warning: Operand of null-aware operation '!' has type 'String' which excludes null.
configuration.findMatch(routeInformation.location!, extra: state.extra);
^
file:///C:/Users/remy/Documents/dev/workspace/veolys/nouvelatrium/apps/nouvelatrium/.dart_tool/flutter_build/387c38ab88f96dc7786f99cb83c14955/main.dart:
Internal Error: The compiler crashed when compiling this element.

Stack trace

The compiler crashed: Invalid argument(s): Type parameter TypeParameter(T) is not indexed
#0 TypeParameterIndexer.[] (package:kernel/binary/ast_to_binary.dart:3371:8)
#1 BinaryPrinter.visitTypeParameterType (package:kernel/binary/ast_to_binary.dart:2528:38)
#2 TypeParameterType.accept (package:kernel/ast.dart:12528:42)
#3 BinaryPrinter.writeNode (package:kernel/binary/ast_to_binary.dart:439:10)
#4 BinaryPrinter.writeNodeList (package:kernel/binary/ast_to_binary.dart:349:7)
#5 BinaryPrinter.visitInterfaceType (package:kernel/binary/ast_to_binary.dart:2435:7)
#6 InterfaceType.accept (package:kernel/ast.dart:11385:42)
#7 BinaryPrinter.writeNode (package:kernel/binary/ast_to_binary.dart:439:10)
#8 BinaryPrinter.visitAsExpression (package:kernel/binary/ast_to_binary.dart:1960:5)
#9 AsExpression.accept (package:kernel/ast.dart:7636:44)
#10 BinaryPrinter.writeNode (package:kernel/binary/ast_to_binary.dart:439:10)
#11 BinaryPrinter.writeOptionalNode (package:kernel/binary/ast_to_binary.dart:531:7)
#12 BinaryPrinter.visitReturnStatement (package:kernel/binary/ast_to_binary.dart:2315:5)
#13 ReturnStatement.accept (package:kernel/ast.dart:10127:43)
#14 BinaryPrinter.writeNode (package:kernel/binary/ast_to_binary.dart:439:10)
#15 BinaryPrinter.writeOptionalNode (package:kernel/binary/ast_to_binary.dart:531:7)
#16 BinaryPrinter.visitFunctionNode (package:kernel/binary/ast_to_binary.dart:1529:5)
#17 FunctionNode.accept (package:kernel/ast.dart:3908:38)
#18 BinaryPrinter.writeFunctionNode (package:kernel/binary/ast_to_binary.dart:446:10)
#19 BinaryPrinter.visitProcedure (package:kernel/binary/ast_to_binary.dart:1357:5)
#20 Procedure.accept (package:kernel/ast.dart:3311:40)
#21 BinaryPrinter.writeProcedureNode (package:kernel/binary/ast_to_binary.dart:467:10)
#22 BinaryPrinter.writeProcedureNodeList (package:kernel/binary/ast_to_binary.dart:358:7)
#23 BinaryPrinter.visitClass (package:kernel/binary/ast_to_binary.dart:1260:5)
#24 Class.accept (package:kernel/ast.dart:1422:38)
#25 BinaryPrinter.writeClassNode (package:kernel/binary/ast_to_binary.dart:481:10)
#26 BinaryPrinter.writeClassNodeList (package:kernel/binary/ast_to_binary.dart:376:7)
#27 BinaryPrinter.visitLibrary (package:kernel/binary/ast_to_binary.dart:1096:5)
#28 Library.accept (package:kernel/ast.dart:577:38)
#29 BinaryPrinter.writeLibraryNode (package:kernel/binary/ast_to_binary.dart:460:10)
#30 BinaryPrinter.writeLibraries (package:kernel/binary/ast_to_binary.dart:766:9)
#31 BinaryPrinter.writeComponentFile. (package:kernel/binary/ast_to_binary.dart:605:7)
#32 Timeline.timeSync (dart:developer/timeline.dart:171:22)
#33 BinaryPrinter.writeComponentFile (package:kernel/binary/ast_to_binary.dart:586:14)
#34 SerializationTask.serializeComponent. (package:compiler/src/serialization/task.dart:77:15)
#35 CompilerTask.measureSubtask (package:compiler/src/common/tasks.dart:181:35)
#36 SerializationTask.serializeComponent (package:compiler/src/serialization/task.dart:67:5)
#37 Compiler.produceKernel (package:compiler/src/compiler.dart:422:29)

#38 Compiler.runSequentialPhases (package:compiler/src/compiler.dart:711:20)

#39 Compiler.runInternal. (package:compiler/src/compiler.dart:311:7)

#40 Compiler.runInternal (package:compiler/src/compiler.dart:310:5)

#41 Compiler.run. (package:compiler/src/compiler.dart:231:11)

#42 main (package:compiler/src/dart2js.dart:1241:3)

Command: C:\Users\remy\Documents\dev\flutter\bin\cache\dart-sdk\bin\dart.exe --disable-dart-dev C:\Users\remy\Documents\dev\flutter\bin\cache\dart-sdk\bin\snapshots\dart2js.dart.snapshot --platform-binaries=C:\Users\remy\Documents\dev\flutter\bin\cache\flutter_web_sdk\kernel --invoker=flutter_tool -Ddart.vm.product=true -Denv=sit -DFLUTTER_WEB_AUTO_DETECT=true -DFLUTTER_WEB_CANVASKIT_URL=https://www.gstatic.com/flutter-canvaskit/b8d35810e91ab8fc39ba5e7a41bff6f697e8e3a8/ --native-null-assertions -o C:\Users\remy\Documents\dev\workspace\veolys\nouvelatrium\apps\nouvelatrium.dart_tool\flutter_build\387c38ab88f96dc7786f99cb83c14955\app.dill --packages=.dart_tool/package_config.json --cfe-only C:\Users\remy\Documents\dev\workspace\veolys\nouvelatrium\apps\nouvelatrium.dart_tool\flutter_build\387c38ab88f96dc7786f99cb83c14955\main.dart
#0 RunResult.throwException (package:flutter_tools/src/base/process.dart:125:5)
#1 _DefaultProcessUtils.run (package:flutter_tools/src/base/process.dart:278:19)

#2 Dart2JSTarget.build (package:flutter_tools/src/build_system/targets/web.dart:189:5)

#3 _BuildInstance._invokeInternal (package:flutter_tools/src/build_system/build_system.dart:853:9)

#4 Future.wait. (dart:async/future.dart:525:21)

#5 _BuildInstance.invokeTarget (package:flutter_tools/src/build_system/build_system.dart:791:32)

#6 Future.wait. (dart:async/future.dart:525:21)

#7 _BuildInstance.invokeTarget (package:flutter_tools/src/build_system/build_system.dart:791:32)

#8 FlutterBuildSystem.build (package:flutter_tools/src/build_system/build_system.dart:620:16)

#9 WebBuilder.buildWeb (package:flutter_tools/src/web/compile.dart:89:34)

#10 BuildWebCommand.runCommand (package:flutter_tools/src/commands/build_web.dart:198:5)

#11 FlutterCommand.run. (package:flutter_tools/src/runner/flutter_command.dart:1297:27)

#12 AppContext.run. (package:flutter_tools/src/base/context.dart:150:19)

#13 CommandRunner.runCommand (package:args/command_runner.dart:212:13)

#14 FlutterCommandRunner.runCommand. (package:flutter_tools/src/runner/flutter_command_runner.dart:339:9)

#15 AppContext.run. (package:flutter_tools/src/base/context.dart:150:19)

#16 FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:285:5)

#17 run.. (package:flutter_tools/runner.dart:115:9)

#18 AppContext.run. (package:flutter_tools/src/base/context.dart:150:19)

#19 main (package:flutter_tools/executable.dart:90:3)

[johnniwinther]

@srujzs This looks like #53291

[srujzs]

Indeed it does. @llfbandit, can you share a repro here?

[llfbandit]

@johnniwinther is right. We're in the exact same situation as the other issue. I use also the record package in my app.
Simply adding go_router seems to be not enough to reproduce the crash. Adding record package makes the issue reproducible.

Funny enough, I'm the author of the record package. Is there any action to take on my side to workaround or lower the risk for such issue for the future?

For what it's worth now, here's the flutter reproducer.
web_compiler_issue.zip

[srujzs]

The issue arises from the intersection of @staticInterop, type parameters, and factories. I don't really think you can work around using a factory unless you start using a static method that forwards to a js_util call or something, and getting rid of type parameters is probably going to be painful for your users.

I think a cherry-pick for this change makes sense so it can be available before 3.2.