fix: Linter warnings

moxxmpp/lib/src/connection.dart

@@ -72,7 +72,7 @@ class XmppConnectionResult {
 }
 
 class XmppConnection {
-  /// [socket] is for debugging purposes.
+  /// [_socket] is for debugging purposes.
   /// [connectionPingDuration] is the duration after which a ping will be sent to keep
   /// the connection open. Defaults to 15 minutes.
   XmppConnection(

moxxmpp/lib/src/managers/handlers.dart

@@ -78,7 +78,7 @@ class StanzaHandler extends Handler {
     } else if (tagXmlns != null) {
       return listContains(
         node.children,
-        (XMLNode _node) => _node.attributes.containsKey('xmlns') && _node.attributes['xmlns'] == tagXmlns,
+        (XMLNode node_) => node_.attributes.containsKey('xmlns') && node_.attributes['xmlns'] == tagXmlns,
       );
     }
 

moxxmpp/lib/src/message.dart

@@ -1,4 +1,3 @@
-import 'package:moxlib/moxlib.dart';
 import 'package:moxxmpp/src/events.dart';
 import 'package:moxxmpp/src/jid.dart';
 import 'package:moxxmpp/src/managers/base.dart';

moxxmpp/lib/src/stanza.dart

@@ -2,7 +2,7 @@ import 'package:moxxmpp/src/namespaces.dart';
 import 'package:moxxmpp/src/stringxml.dart';
 
 class Stanza extends XMLNode {
-
+  // ignore: use_super_parameters
   Stanza({ this.to, this.from, this.type, this.id, List<XMLNode> children = const [], required String tag, Map<String, String> attributes = const {} }) : super(
     tag: tag,
     attributes: <String, dynamic>{

moxxmpp/lib/src/xeps/xep_0004.dart

@@ -52,7 +52,7 @@ class DataFormField {
       children: [
         ...description != null ? [XMLNode(tag: 'desc', text: description)] : [],
         ...isRequired ? [XMLNode(tag: 'required')] : [],
-        ...values.map((value) => XMLNode(tag: 'value', text: value)).toList(),
+        ...values.map((value) => XMLNode(tag: 'value', text: value)),
         ...options.map((option) => option.toXml())
       ],
     );
@@ -88,14 +88,14 @@ class DataForm {
         'type': type
       },
       children: [
-        ...instructions.map((i) => XMLNode(tag: 'instruction', text: i)).toList(),
+        ...instructions.map((i) => XMLNode(tag: 'instruction', text: i)),
         ...title != null ? [XMLNode(tag: 'title', text: title)] : [],
-        ...fields.map((field) => field.toXml()).toList(),
-        ...reported.map((report) => report.toXml()).toList(),
+        ...fields.map((field) => field.toXml()),
+        ...reported.map((report) => report.toXml()),
         ...items.map((item) => XMLNode(
               tag: 'item',
               children: item.map((i) => i.toXml()).toList(),
-          ),).toList(),
+          ),),
       ],
     );
   }

moxxmpp/lib/src/xeps/xep_0030/xep_0030.dart

@@ -204,13 +204,13 @@ class DiscoManager extends XmppManagerBase {
               }
             },
             children: [
-              ...getIdentities().map((identity) => identity.toXMLNode()).toList(),
+              ...getIdentities().map((identity) => identity.toXMLNode()),
               ..._features.map((feat) {
                 return XMLNode(
                   tag: 'feature',
                   attributes: <String, dynamic>{ 'var': feat },
                 );
-              }).toList(),
+              }),
             ],
           ),
         ],