Fix linter rules

example/lib/download_with_trunks.dart

@@ -56,9 +56,9 @@ Future downloadWithChunks(
     final f = File(savePath + 'temp0');
     final ioSink = f.openWrite(mode: FileMode.writeOnlyAppend);
     for (int i = 1; i < chunk; ++i) {
-      final _f = File(savePath + 'temp$i');
-      await ioSink.addStream(_f.openRead());
-      await _f.delete();
+      final file = File(savePath + 'temp$i');
+      await ioSink.addStream(file.openRead());
+      await file.delete();
     }
     await ioSink.close();
     await f.rename(savePath);

example/lib/formdata.dart

@@ -112,7 +112,7 @@ void main() async {
     data: data3,
     onSendProgress: (received, total) {
       if (total != -1) {
-        print((received / total * 100).toStringAsFixed(0) + '%');
+        print('${(received / total * 100).toStringAsFixed(0)}%');
       }
     },
   );

example/lib/queued_interceptor_crsftoken.dart

@@ -78,13 +78,13 @@ void main() async {
     },
   ));
 
-  FutureOr<void> _onResult(d) {
+  FutureOr<void> onResult(d) {
     print('request ok!');
   }
 
   /// assume `/test?tag=2` path occurs the authorization error (401)
   /// and token to be updated
-  await dio.get('/test?tag=1').then(_onResult);
-  await dio.get('/test?tag=2').then(_onResult);
-  await dio.get('/test?tag=3').then(_onResult);
+  await dio.get('/test?tag=1').then(onResult);
+  await dio.get('/test?tag=2').then(onResult);
+  await dio.get('/test?tag=3').then(onResult);
 }

example/lib/response_interceptor.dart

@@ -58,12 +58,12 @@ void main() async {
   } on DioError catch (e) {
     assert(e.response!.statusCode == 404);
   }
-  response = await dio.get(urlNotFound + '1');
+  response = await dio.get('${urlNotFound}1');
   assert(response.data == 'fake data');
-  response = await dio.get(urlNotFound + '2');
+  response = await dio.get('${urlNotFound}2');
   assert(response.data == 'fake data');
   try {
-    await dio.get(urlNotFound + '3');
+    await dio.get('${urlNotFound}3');
   } on DioError catch (e) {
     assert(e.message == 'custom error info [404]');
   }

example_flutter_app/lib/main.dart

@@ -41,7 +41,7 @@ class MyHomePage extends StatefulWidget {
   final String title;
 
   @override
-  _MyHomePageState createState() => _MyHomePageState();
+  State<MyHomePage> createState() => _MyHomePageState();
 }
 
 class _MyHomePageState extends State<MyHomePage> {

example_flutter_app/lib/routes/request.dart

@@ -5,7 +5,7 @@ import '../http.dart';
 
 class RequestRoute extends StatefulWidget {
   @override
-  _RequestRouteState createState() => _RequestRouteState();
+  State<RequestRoute> createState() => _RequestRouteState();
 }
 
 class _RequestRouteState extends State<RequestRoute> {

example_flutter_app/pubspec.yaml

@@ -34,7 +34,7 @@ dependencies:
 dev_dependencies:
   flutter_test:
     sdk: flutter
-  lints: ^1.0.1
+  lints: any
 
 # For information on the generic Dart part of this file, see the
 # following page: https://dart.dev/tools/pub/pubspec

plugins/http2_adapter/lib/src/connection_manager_imp.dart

@@ -39,12 +39,12 @@ class _ConnectionManager implements ConnectionManager {
     final domain = '${uri.host}:${uri.port}';
     _ClientTransportConnectionState? transportState = _transportsMap[domain];
     if (transportState == null) {
-      Future<_ClientTransportConnectionState>? _initFuture =
+      Future<_ClientTransportConnectionState>? initFuture =
           _connectFutures[domain];
-      if (_initFuture == null) {
-        _connectFutures[domain] = _initFuture = _connect(options);
+      if (initFuture == null) {
+        _connectFutures[domain] = initFuture = _connect(options);
       }
-      transportState = await _initFuture;
+      transportState = await initFuture;
       if (_forceClosed) {
         transportState.dispose();
       } else {
@@ -108,35 +108,35 @@ class _ConnectionManager implements ConnectionManager {
 
     // Config a ClientTransportConnection and save it
     final transport = ClientTransportConnection.viaSocket(socket);
-    final _transportState = _ClientTransportConnectionState(transport);
+    final transportState = _ClientTransportConnectionState(transport);
     transport.onActiveStateChanged = (bool isActive) {
-      _transportState.isActive = isActive;
+      transportState.isActive = isActive;
       if (!isActive) {
-        _transportState.latestIdleTimeStamp = DateTime.now();
+        transportState.latestIdleTimeStamp = DateTime.now();
       }
     };
     //
-    _transportState.delayClose(
+    transportState.delayClose(
       _closed ? Duration(milliseconds: 50) : _idleTimeout,
       () {
         _transportsMap.remove(domain);
-        _transportState.transport.finish();
+        transportState.transport.finish();
       },
     );
-    return _transportState;
+    return transportState;
   }
 
   @override
   void removeConnection(ClientTransportConnection transport) {
-    _ClientTransportConnectionState? _transportState;
+    _ClientTransportConnectionState? transportState;
     _transportsMap.removeWhere((_, state) {
       if (state.transport == transport) {
-        _transportState = state;
+        transportState = state;
         return true;
       }
       return false;
     });
-    _transportState?.dispose();
+    transportState?.dispose();
   }
 
   @override

plugins/http2_adapter/lib/src/http2_adapter.dart

@@ -47,10 +47,10 @@ class Http2Adapter implements HttpClientAdapter {
     const excludeMethods = ['PUT', 'POST', 'PATCH'];
 
     if (path.isEmpty || !path.startsWith('/')) {
-      path = '/' + path;
+      path = '/$path';
     }
     if (uri.query.trim().isNotEmpty) {
-      path += '?' + uri.query;
+      path += '?${uri.query}';
     }
     final headers = [
       Header.ascii(':method', options.method),