void _send()

in lib/src/client.dart [144:161]

• 16 lines of code
• 9 McCabe index (conditional complexity)

  void _send(String method, parameters, [int? id]) {
    if (parameters is Iterable) parameters = parameters.toList();
    if (parameters is! Map && parameters is! List && parameters != null) {
      throw ArgumentError('Only maps and lists may be used as JSON-RPC '
          'parameters, was "$parameters".');
    }
    if (isClosed) throw StateError('The client is closed.');

    var message = <String, dynamic>{'jsonrpc': '2.0', 'method': method};
    if (id != null) message['id'] = id;
    if (parameters != null) message['params'] = parameters;

    if (_batch != null) {
      _batch!.add(message);
    } else {
      _channel.sink.add(message);
    }
  }