Not able to correctly import node_io/node_io.dart - some errors

[brilliapps]

The second issue/question - still new to dart

dart --version
Dart SDK version: 2.10.0-4.0.dev.flutter-0341576448 (be) (Sat Aug 8 20:25:12 2020 +0000) on "windows_x64"
There was "pub get" too

In the below main.dart file simple examples work on node.js like Hello World (just command: webdev build). I tried to import some interop packages for testing/learning. As 'package:node_interop/http.dart' as http; was imported correctly (not using it just imported) package:node_io/node_io.dart show some errors, using command webdev build:

build_web_compilers:entrypoint on web/aqueductnodejs.dart: Skipping compiling aqueductnodejs|web/aqueductnodejs.dart with dart2js because some of its
transitive libraries have sdk dependencies that not supported on this platform:

node_io|lib/src/directory.dart
node_io|lib/src/http_headers.dart
node_io|lib/src/stdout.dart
node_io|lib/src/network_interface.dart
node_io|lib/src/file.dart
node_io|lib/src/streams.dart
node_io|lib/node_io.dart
node_io|lib/src/internet_address.dart
node_io|lib/src/link.dart
node_io|lib/src/file_system_entity.dart
node_io|lib/src/http_server.dart

https://github.com/dart-lang/build/blob/master/docs/faq.md#how-can-i-resolve-skipped-compiling-warnings

Tried different imports like import 'package:node_interop/io.dart'; (seen heere https://www.youtube.com/watch?v=SFY3he2hcXM) , it doesn't work also.

my dart file
import 'dart:async';
import 'dart:convert';

import 'package:node_preamble/preamble.dart' as preamble;
import 'package:node_interop/fs.dart';
import 'package:node_interop/node.dart';
//import 'package:node_interop/io.dart';
import 'package:node_io/node_io.dart';

//import 'package:node_interop/fs.dart'; //
import 'package:node_interop/http.dart' as http;

Future main() async {
print('Server test Hello world!');
}

name: someapp
description: A simple command-line application.

version: 1.0.0

homepage: https://www.example.com

environment:
sdk: '>=2.8.1 <3.0.0'

dependencies:

path: ^1.7.0

node_preamble: ^1.4.12
node_interop: ^1.1.1
node_io: ^1.1.1
#node_io:

git:

url: https://github.com/pulyaevskiy/node-interop

path: node_io

ref: #77

dev_dependencies:
pedantic: ^1.9.0
build_runner: '>=1.6.2 <2.0.0'
build_web_compilers: '>=2.6.1 <3.0.0'

I am asking anybody for helping with this. If it is too compilcated, please don't feel obliged to waste your time. I assume it is not that difficult for experienced users with node_interop libraries. Right now just need it to work for simple tests. Don't need to reach too far.

[brilliapps]

I see i am not the first one having this problem.
For example i followed a solution from this link:
#67
Which changes something but doesn't work anyway.
I have this fragment here now:
dev_dependencies:
pedantic: ^1.9.0
build_runner: '>=1.6.2 <2.0.0'
build_web_compilers: '>=2.6.1 <3.0.0'

dependency_overrides:
build_node_compilers:
git:
url: https://github.com/pulyaevskiy/node-interop.git
path: build_node_compilers
ref: skip-platform-check-for-node-io

And webdev build produces this error:

[SEVERE] The platform ddc, has already been registered.

[SEVERE] Failed to instantiate builder for args with configuration:
{}
Unhandled exception:
Bad state: Unable to start build daemon.
#0 _handleDaemonStartup (package:build_daemon/client.dart:82:5)

#1 BuildDaemonClient.connect (package:build_daemon/client.dart:183:11)

#2 connectClient (package:webdev/src/daemon_client.dart:17:23)
#3 BuildCommand.run (package:webdev/src/command/build_command.dart:57:26)

#4 CommandRunner.runCommand (package:args/command_runner.dart:197:27)
#5 _CommandRunner.runCommand (package:webdev/src/webdev_command_runner.dart:38:24)
#6 CommandRunner.run. (package:args/command_runner.dart:112:25)
#7 new Future.sync (dart:async/future.dart:223:31)
#8 CommandRunner.run (package:args/command_runner.dart:112:14)
#9 run (package:webdev/src/webdev_command_runner.dart:19:56)
#10 main (file:///C:/Users/S%C5%82awek/AppData/Local/Pub/Cache/hosted/pub.dartlang.org/webdev-2.5.9/bin/webdev.dart:17:22)
#11 _startIsolate. (dart:isolate-patch/isolate_patch.dart:299:32)
#12 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:168:12)

Anybody has any idea what to do ?