webdev doesn't allow setting optimization level

[Wdestroier]

Hi!

The documentation in https://dart.dev/web/deployment says:

Compile using webdev

Use the webdev build command to create a deployable version of your app. This command converts your code to JavaScript and saves the result as build/web/main.dart.js. You can use any option available to dart compile js with webdev build.

If we check the dart compile js help section, we can see it supports optmization levels:

dart compile js --help
Compile Dart to JavaScript.

Usage: dart compile js [arguments]
-h, --help Print this usage information.
-h -v Show detailed information about all options.
-o, --output Write the output to .
-O<0,1,2,3,4> Set the compiler optimization level (defaults to -O1).
-O0 No optimizations (only meant for debugging the compiler).
-O1 Default (includes whole program analyses and inlining).
-O2 Safe production-oriented optimizations (like minification).
-O3 Potentially unsafe optimizations (see -h -v for details).
-O4 More agressive unsafe optimizations (see -h -v for details).

However, if we check the webdev build help section, we can see it doesn't show anything related to these flags:

webdev build --help
Run builders to build a package.

Usage: webdev build [arguments]
-h, --help Print this usage information.
-o, --output A directory to write the result of a build to. Or a mapping from a top-level
directory in the package to the directory to write a filtered build output
to. For example "web:deploy".
A value of "NONE" indicates that no "--output" value should be passed to
build_runner.
(defaults to "web:build")
-r, --[no-]release Build with release mode defaults for builders.
(defaults to on)
--[no-]build-web-compilers If a dependency on build_web_compilers is required to run.
(defaults to on)
-e, --[no-]enable-expression-evaluation Enable expression evaluation features in the debugger.
(defaults to on)
-v, --verbose Enables verbose logging.

Run "webdev help" to see global options.

If we try to pass the optimization level anyway, it doesn't work:

webdev build -O2
Could not find an option with short name "-O".

Usage: webdev build [arguments]
...

Another alternative I tried is webdev build -- -O2, but it doesn't work too:

webdev build -- -O2
[INFO] Run "build_runner help" to see global options.Unhandled exception:
Bad state: Unable to start build daemon.
#0 _handleDaemonStartup. (package:build_daemon/client.dart:79:21)
#1 _runUserCode (dart:async/stream_pipe.dart:11:23)
#2 Stream.firstWhere. (dart:async/stream.dart:1708:9)
#3 _RootZone.runGuarded (dart:async/zone.dart:1582:10)
#4 _BufferingStreamSubscription._sendDone.sendDone (dart:async/stream_impl.dart:418:13)
#5 _BufferingStreamSubscription._sendDone (dart:async/stream_impl.dart:428:7)
#6 _BufferingStreamSubscription._close (dart:async/stream_impl.dart:317:7)
#7 _SyncBroadcastStreamController._sendDone. (dart:async/broadcast_stream_controller.dart:399:22)
#8 _BroadcastStreamController._forEachListener (dart:async/broadcast_stream_controller.dart:322:15)
#9 _SyncBroadcastStreamController._sendDone (dart:async/broadcast_stream_controller.dart:398:7)
#10 _BroadcastStreamController.close (dart:async/broadcast_stream_controller.dart:268:5)
#11 _AsBroadcastStreamController.close (dart:async/broadcast_stream_controller.dart:505:24)
#12 _RootZone.runGuarded (dart:async/zone.dart:1582:10)
#13 _BufferingStreamSubscription._sendDone.sendDone (dart:async/stream_impl.dart:418:13)
#14 _BufferingStreamSubscription._sendDone (dart:async/stream_impl.dart:428:7)
#15 _BufferingStreamSubscription._close (dart:async/stream_impl.dart:317:7)
#16 _SinkTransformerStreamSubscription._close (dart:async/stream_transformers.dart:87:11)
#17 _EventSinkWrapper.close (dart:async/stream_transformers.dart:21:11)
#18 _StringAdapterSink.close (dart:convert/string_conversion.dart:241:11)
#19 _LineSplitterSink.close (dart:convert/line_splitter.dart:141:11)
#20 _SinkTransformerStreamSubscription._handleDone (dart:async/stream_transformers.dart:132:24)
#21 _RootZone.runGuarded (dart:async/zone.dart:1582:10)
#22 _BufferingStreamSubscription._sendDone.sendDone (dart:async/stream_impl.dart:418:13)
#23 _BufferingStreamSubscription._sendDone (dart:async/stream_impl.dart:428:7)
#24 _BufferingStreamSubscription._close (dart:async/stream_impl.dart:317:7)
#25 _SinkTransformerStreamSubscription._close (dart:async/stream_transformers.dart:87:11)
#26 _EventSinkWrapper.close (dart:async/stream_transformers.dart:21:11)
#27 _StringAdapterSink.close (dart:convert/string_conversion.dart:241:11)
#28 _Utf8ConversionSink.close (dart:convert/string_conversion.dart:295:20)
#29 _ConverterStreamEventSink.close (dart:convert/chunked_conversion.dart:78:18)
#30 _SinkTransformerStreamSubscription._handleDone (dart:async/stream_transformers.dart:132:24)
#31 _RootZone.runGuarded (dart:async/zone.dart:1582:10)
#32 _BufferingStreamSubscription._sendDone.sendDone (dart:async/stream_impl.dart:418:13)
#33 _BufferingStreamSubscription._sendDone (dart:async/stream_impl.dart:428:7)
#34 _BufferingStreamSubscription._close (dart:async/stream_impl.dart:317:7)
#35 _SyncStreamControllerDispatch._sendDone (dart:async/stream_controller.dart:792:19)
#36 _StreamController._closeUnchecked (dart:async/stream_controller.dart:647:7)
#37 _StreamController.close (dart:async/stream_controller.dart:640:5)
#38 _Socket._onData (dart:io-patch/socket_patch.dart:2462:21)
#39 _RootZone.runUnaryGuarded (dart:async/zone.dart:1594:10)
#40 _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:365:11)
#41 _BufferingStreamSubscription._add (dart:async/stream_impl.dart:297:7)
#42 _SyncStreamControllerDispatch._sendData (dart:async/stream_controller.dart:784:19)
#43 _StreamController._add (dart:async/stream_controller.dart:658:7)
#44 _StreamController.add (dart:async/stream_controller.dart:606:5)
#45 new _RawSocket. (dart:io-patch/socket_patch.dart:1949:35)
#46 _NativeSocket.issueReadEvent.issue (dart:io-patch/socket_patch.dart:1378:18)
#47 _microtaskLoop (dart:async/schedule_microtask.dart:40:21)
#48 _startMicrotaskLoop (dart:async/schedule_microtask.dart:49:5)
#49 _runPendingImmediateCallback (dart:isolate-patch/isolate_patch.dart:118:13)
#50 _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:185:5)

Should webdev's documentation enforce "You can use any option available to dart compile js with webdev build." if the relevant flags don't work? I guess so, it should work.