Compiler crash: Internal Error: Unknown external method j:method(SensorOptions|constructor#) external factory SensorOptions({

[mattyg915]

Reporting as requested in the error message.

Operating System: MacOS 15.1 running on M1Pro
Flutter and dart version info:

 Flutter (Channel stable, 3.19.0, on macOS 15.1 24B83 darwin-arm64, locale en-US)
    • Flutter version 3.19.0 on channel stable at /Users/mgercz/fvm/versions/3.19.0
    • Upstream repository ssh://[email protected]/flutter/flutter.git
    • FLUTTER_GIT_URL = ssh://[email protected]/flutter/flutter.git
    • Framework revision bae5e49bc2 (10 months ago), 2024-02-13 17:46:18 -0800
    • Engine revision 04817c99c9
    • Dart version 3.3.0
    • DevTools version 2.31.1

Full stack trace and error message:

Target dart2js failed: ProcessException: Process exited abnormally with exit code 253:
../../../../.pub-cache/hosted/pub.dev/sensors_plus-6.1.0/lib/src/web_sensors_interop.dart:76:20:
Internal Error: Unknown external method j:method(SensorOptions|constructor#)
  external factory SensorOptions({
                   ^
The compiler is broken.

When compiling the above element, the compiler crashed. It is not
possible to tell if this is caused by a problem in your program or
not. Regardless, the compiler should not crash.

The Dart team would greatly appreciate if you would take a moment to
report this problem at http://dartbug.com/new.

Please include the following information:

* the name and version of your operating system,

* the Dart SDK build number (3.3.0), and

* the entire message you see here (including the full stack trace
  below as well as the source location above).
The compiler crashed: Assertion failure: Unknown external method j:method(SensorOptions|constructor#)
#0      failedAt (package:compiler/src/diagnostics/invariant.dart:39:3)
#1      KernelSsaGraphBuilder._buildExternalFunctionNode (package:compiler/src/ssa/builder.dart:1825:5)
#2      KernelSsaGraphBuilder.build.<anonymous closure> (package:compiler/src/ssa/builder.dart:439:15)
#3      DiagnosticReporter.withCurrentElement (package:compiler/src/diagnostics/diagnostic_listener.dart:154:15)
#4      KernelSsaGraphBuilder.build (package:compiler/src/ssa/builder.dart:427:21)
#5      KernelSsaBuilder.build.<anonymous closure> (package:compiler/src/js_model/js_strategy.dart:525:22)
#6      CompilerTask.measure (package:compiler/src/common/tasks.dart:66:51)
#7      KernelSsaBuilder.build (package:compiler/src/js_model/js_strategy.dart:507:18)
#8      SsaBuilderTask.build (package:compiler/src/ssa/ssa.dart:365:21)
#9      SsaFunctionCompiler.compile (package:compiler/src/ssa/ssa.dart:99:28)
#10     OnDemandCodegenResults.getCodegenResults (package:compiler/src/common/codegen.dart:409:30)
#11     JsBackendStrategy.generateCode (package:compiler/src/js_model/js_strategy.dart:331:43)
#12     KernelCodegenWorkItem.run (package:compiler/src/js_model/js_strategy.dart:466:29)
#13     Compiler.emptyQueue.<anonymous closure>.<anonymous closure>.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:compiler/src/compiler.dart:752:70)
#14     CompilerTask.measureSubtask (package:compiler/src/common/tasks.dart:181:35)
#15     Compiler.emptyQueue.<anonymous closure>.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:compiler/src/compiler.dart:752:32)
#16     CompilerTask.measureSubtask (package:compiler/src/common/tasks.dart:181:35)
#17     Compiler.emptyQueue.<anonymous closure>.<anonymous closure>.<anonymous closure> (package:compiler/src/compiler.dart:750:28)
#18     DiagnosticReporter.withCurrentElement (package:compiler/src/diagnostics/diagnostic_listener.dart:154:15)
#19     Compiler.emptyQueue.<anonymous closure>.<anonymous closure> (package:compiler/src/compiler.dart:748:18)
#20     CodegenEnqueuer._forEach (package:compiler/src/js_backend/enqueuer.dart:266:12)
#21     CodegenEnqueuer.forEach (package:compiler/src/js_backend/enqueuer.dart:282:5)
#22     Compiler.emptyQueue.<anonymous closure> (package:compiler/src/compiler.dart:744:16)
#23     CompilerTask.measureSubtask (package:compiler/src/common/tasks.dart:181:35)
#24     Compiler.emptyQueue (package:compiler/src/compiler.dart:743:14)
#25     Compiler.processQueue.<anonymous closure> (package:compiler/src/compiler.dart:767:7)
#26     CompilerTask.measureSubtask (package:compiler/src/common/tasks.dart:181:35)
#27     Compiler.processQueue (package:compiler/src/compiler.dart:761:14)
#28     Compiler.runCodegenEnqueuer (package:compiler/src/compiler.dart:472:5)
#29     Compiler.runSequentialPhases (package:compiler/src/compiler.dart:680:27)
<asynchronous suspension>
#30     Compiler.runInternal.<anonymous closure> (package:compiler/src/compiler.dart:315:7)
<asynchronous suspension>
#31     Compiler.runInternal (package:compiler/src/compiler.dart:314:5)
<asynchronous suspension>
#32     Compiler.run.<anonymous closure> (package:compiler/src/compiler.dart:235:11)
<asynchronous suspension>
#33     compile.<anonymous closure> (package:compiler/compiler_api.dart:256:30)
<asynchronous suspension>
#34     compile.compilationDone (package:compiler/src/dart2js.dart:729:3)
<asynchronous suspension>
#35     main (package:compiler/src/dart2js.dart:1233:3)
<asynchronous suspension>
  Command: /Users/mgercz/fvm/versions/3.19.0/bin/cache/dart-sdk/bin/dart --disable-dart-dev /Users/mgercz/fvm/versions/3.19.0/bin/cache/dart-sdk/bin/snapshots/dart2js.dart.snapshot --platform-binaries=/Users/mgercz/fvm/versions/3.19.0/bin/cache/flutter_web_sdk/kernel --invoker=flutter_tool -Ddart.vm.profile=true -Dflutter.inspector.structuredErrors=false -DFLUTTER_WEB_AUTO_DETECT=true -DFLUTTER_WEB_CANVASKIT_URL=https://www.gstatic.com/flutter-canvaskit/04817c99c9fd4956f27505204f7e344335810aed/ --no-minify --native-null-assertions -O4 -o /Users/mgercz/Development/native/apps/abx_plan/.dart_tool/flutter_build/7a821ba6e3c4bbdf501a8a9bf4021edd/main.dart.js /Users/mgercz/Development/native/apps/abx_plan/.dart_tool/flutter_build/7a821ba6e3c4bbdf501a8a9bf4021edd/app.dill
#0      RunResult.throwException (package:flutter_tools/src/base/process.dart:127:5)
#1      _DefaultProcessUtils.run (package:flutter_tools/src/base/process.dart:326:19)
<asynchronous suspension>
#2      Dart2JSTarget.build (package:flutter_tools/src/build_system/targets/web.dart:192:5)
<asynchronous suspension>
#3      _BuildInstance._invokeInternal (package:flutter_tools/src/build_system/build_system.dart:861:9)
<asynchronous suspension>
#4      Future.wait.<anonymous closure> (dart:async/future.dart:518:21)
<asynchronous suspension>
#5      _BuildInstance.invokeTarget (package:flutter_tools/src/build_system/build_system.dart:799:32)
<asynchronous suspension>
#6      Future.wait.<anonymous closure> (dart:async/future.dart:518:21)
<asynchronous suspension>
#7      _BuildInstance.invokeTarget (package:flutter_tools/src/build_system/build_system.dart:799:32)
<asynchronous suspension>
#8      FlutterBuildSystem.build (package:flutter_tools/src/build_system/build_system.dart:628:16)
<asynchronous suspension>
#9      WebBuilder.buildWeb (package:flutter_tools/src/web/compile.dart:93:34)
<asynchronous suspension>
#10     ResidentWebRunner.run.<anonymous closure> (package:flutter_tools/src/isolated/resident_web_runner.dart:337:11)
<asynchronous suspension>
#11     asyncGuard.<anonymous closure> (package:flutter_tools/src/base/async_guard.dart:111:24)
<asynchronous suspension>

[dart-github-bot]

Summary: The Dart compiler crashed during compilation of the sensors_plus package, producing an "Unknown external method" error related to SensorOptions. This is a Dart compiler bug.

[srujzs]

Duplicate of #54801

I'd use a more recent version of Dart as this is fixed in the latest version of 3.3.