Trouble run client in dart VM

[icecream78]

Hi. I am new in Dart ecosystem and trying to write simple client to connect socket.io server. Running next code running errors. Can anybody help me fix this. Thanks

Code

import 'package:socket_io_client/socket_io_client.dart' as IO;

main(List<String> args) {
  print('start app');

  IO.Socket socket = IO.io('http://localhost:3000');

  socket.on('connect', (_) {
    print('connect');
    socket.emit('msg', 'test');
    socket.emit('chat message', 'test_msg');
  });

  socket.on('chat message', (data) {
    print('dsadasdas');
    print(data);
  });
  socket.on('event', (data) => print(data));
  socket.on('disconnect', (_) => print('disconnect'));
  socket.on('fromServer', (_) => print(_));
}

Errors

file:///home/faker/.pub-cache/hosted/pub.dartlang.org/socket_io_client-0.9.0+1/lib/src/engine/socket.dart:15:8: Error: Not found: 'dart:html'
import 'dart:html';
       ^
file:///home/faker/.pub-cache/hosted/pub.dartlang.org/socket_io_client-0.9.0+1/lib/src/engine/transport/jsonp_transport.dart:2:8: Error: Not found: 'dart:html'
import 'dart:html';
       ^
file:///home/faker/.pub-cache/hosted/pub.dartlang.org/socket_io_client-0.9.0+1/lib/src/engine/transport/websocket_transport.dart:14:8: Error: Not found: 'dart:html'
import 'dart:html';
       ^
file:///home/faker/.pub-cache/hosted/pub.dartlang.org/socket_io_client-0.9.0+1/lib/src/engine/transport/xhr_transport.dart:2:8: Error: Not found: 'dart:html'
import 'dart:html';
       ^
file:///home/faker/.pub-cache/hosted/pub.dartlang.org/socket_io_client-0.9.0+1/lib/src/engine/transport/jsonp_transport.dart:3:8: Error: Not found: 'dart:js'
import 'dart:js';
       ^
file:///home/faker/.pub-cache/hosted/pub.dartlang.org/socket_io_client-0.9.0+1/lib/src/engine/transport/jsonp_transport.dart:35:3: Error: Type 'ScriptElement' not found.
  ScriptElement script;
  ^^^^^^^^^^^^^
file:///home/faker/.pub-cache/hosted/pub.dartlang.org/socket_io_client-0.9.0+1/lib/src/engine/transport/jsonp_transport.dart:36:3: Error: Type 'FormElement' not found.
  FormElement form;
  ^^^^^^^^^^^
file:///home/faker/.pub-cache/hosted/pub.dartlang.org/socket_io_client-0.9.0+1/lib/src/engine/transport/jsonp_transport.dart:37:3: Error: Type 'IFrameElement' not found.
  IFrameElement iframe;
  ^^^^^^^^^^^^^
file:///home/faker/.pub-cache/hosted/pub.dartlang.org/socket_io_client-0.9.0+1/lib/src/engine/transport/jsonp_transport.dart:38:3: Error: Type 'TextAreaElement' not found.
  TextAreaElement area;
  ^^^^^^^^^^^^^^^
file:///home/faker/.pub-cache/hosted/pub.dartlang.org/socket_io_client-0.9.0+1/lib/src/engine/transport/websocket_transport.dart:29:3: Error: Type 'WebSocket' not found.
  WebSocket ws;
  ^^^^^^^^^

Dart version

☁  socket_io  dart --version
Dart VM version: 2.1.0 (Unknown timestamp) on "linux_x64"

[jumperchen]

You cannot run the client code (i.e dart:html or dart:js) in Dart VM env, please refer to this example - https://github.com/rikulo/socket.io-client-dart/tree/master/web

Before you run into that example, I suggest you should take a look at Dart tutorial from their official website first.