Fix lint errors

lib/core/animations/flip_card_animation.dart

@@ -33,13 +33,11 @@ class _FlipCardAnimationState extends State<FlipCardAnimation>
     );
   }
 
-  late bool _flipXAxis;
   late bool _showFrontSide;
 
   @override
   void initState() {
     super.initState();
-    _flipXAxis = true;
     _showFrontSide = true;
   }
 

lib/core/network/network_info.dart

@@ -14,6 +14,5 @@ class NetworkInfo implements INetworkInfo {
   @override
   Future<bool> get isConnected async => await connectionChecker.hasConnection;
 
-  @override
   List<Object?> get props => [];
 }

lib/core/widgets/home_page_app_bar.dart

@@ -198,11 +198,7 @@ class Action extends StatelessWidget {
 class Title extends StatelessWidget {
   final bool isSearchEnabled;
 
-  String? searchText;
-  DateTime? startDate;
-  DateTime? endDate;
-
-  Title({Key? key, required this.isSearchEnabled}) : super(key: key);
+  const Title({Key? key, required this.isSearchEnabled}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
@@ -212,6 +208,10 @@ class Title extends StatelessWidget {
         .extension<AppbarThemeExtensions>()!
         .searchBarFillColor;
 
+    String? searchText;
+    DateTime? startDate;
+    DateTime? endDate;
+
     void assignStartDate(DateTime date) {
       startDate = date;
       notesFetchCubit.fetchNotes(
@@ -376,12 +376,13 @@ class Title extends StatelessWidget {
 
 class _DeleteButton extends StatelessWidget {
   final int deleteCount;
-  late SelectableListCubit selectableListCubit;
-  _DeleteButton({Key? key, required this.deleteCount}) : super(key: key);
+
+  const _DeleteButton({Key? key, required this.deleteCount}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {
-    selectableListCubit = BlocProvider.of<SelectableListCubit>(context);
+    final selectableListCubit = BlocProvider.of<SelectableListCubit>(context);
+
     return BlocBuilder<NotesBloc, NotesState>(
       builder: (context, state) {
         NotesBloc notesBloc = BlocProvider.of<NotesBloc>(context);

lib/features/auth/data/repositories/authentication_repository.dart

@@ -70,7 +70,7 @@ class AuthenticationRepository implements IAuthenticationRepository {
         log.i("signup successful");
 
         return Right(user);
-      } on DatabaseInsertionException catch (e) {
+      } on DatabaseInsertionException {
         log.e("sign up failed becuase of database exception");
 
         return Left(SignUpFailure.unknownError());
@@ -98,7 +98,7 @@ class AuthenticationRepository implements IAuthenticationRepository {
         try {
           await localDataSource.cacheUser(
               id: user.id, email: email, password: password);
-        } on DatabaseInsertionException catch (e) {
+        } on DatabaseInsertionException {
           //! silently fail for this exception, as it is not critical
 
           log.e("caching of user into local db failed");

lib/features/auth/presentation/pages/auth_page.dart

@@ -16,7 +16,7 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 class AuthPage extends StatefulWidget {
   // user id of last logged in user to determine if it is a fresh login or not
   final String? lastLoggedInUserId;
-  late FingerPrintAuthRepository fingerPrintAuthRepository;
+  late final FingerPrintAuthRepository fingerPrintAuthRepository;
 
   AuthPage({Key? key, this.lastLoggedInUserId}) : super(key: key) {
     fingerPrintAuthRepository = sl<FingerPrintAuthRepository>();

lib/features/auth/presentation/widgets/email_change_popup.dart

@@ -32,7 +32,7 @@ Future<dynamic> emailChangePopup(
           const SizedBox(height: 25),
           AuthEmailInput(
             autoFocus: true,
-            getEmailErrors: () {},
+            getEmailErrors: () => null,
             onEmailChanged: (String email) {
               changedEmail = email;
             },

lib/features/auth/presentation/widgets/forgot_password_popup.dart

@@ -32,7 +32,7 @@ Future<void> forgotPasswordPopup(
           const SizedBox(height: 25),
           AuthEmailInput(
             autoFocus: true,
-            getEmailErrors: () {},
+            getEmailErrors: () => null,
             onEmailChanged: (String email) {
               forgotPasswordEmail = email;
             },

lib/features/auth/presentation/widgets/password_enter_popup.dart

@@ -34,7 +34,7 @@ Future<dynamic> passwordLoginPopup(
               )),
           const SizedBox(height: 25),
           AuthPasswordInput(
-            getPasswordErrors: () {},
+            getPasswordErrors: () => null,
             onPasswordChanged: assignPassword,
             autoFocus: true,
           ),

lib/features/auth/presentation/widgets/password_reset_popup.dart

@@ -40,14 +40,14 @@ Future<dynamic> passwordResetPopup(
                   color: mainTextColor)),
           const SizedBox(height: 25),
           AuthPasswordInput(
-            getPasswordErrors: () {},
+            getPasswordErrors: () => null,
             onPasswordChanged: assignNewPassword,
             autoFocus: true,
             hintText: "New password",
           ),
           const SizedBox(height: 15),
           AuthPasswordInput(
-            getPasswordErrors: () {},
+            getPasswordErrors: () => null,
             onPasswordChanged: assignConfirmNewPassword,
             hintText: "Confirm new password",
           ),

lib/features/auth/presentation/widgets/security_settings.dart

@@ -88,7 +88,7 @@ class SecuritySettings extends StatelessWidget {
                                 context: context,
                                 submitPassword: (password) =>
                                     authenticationRepository.verifyPassword(
-                                        userId!, password),
+                                        userId, password),
                               );
 
                               // old password will be retrieved from previous dialog

lib/features/notes/presentation/widgets/note_preview_card.dart

@@ -8,10 +8,9 @@ import 'package:google_fonts/google_fonts.dart';
 import 'package:intl/intl.dart';
 
 class NotePreviewCard extends StatelessWidget {
-  late bool isSelected;
   final bool first;
   final bool last;
-  NotePreviewCard({
+  const NotePreviewCard({
     Key? key,
     required this.note,
     required this.first,
@@ -22,6 +21,8 @@ class NotePreviewCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    late bool isSelected;
+
     final notePreviewBorderColor = Theme.of(context)
         .extension<HomePageThemeExtensions>()!
         .notePreviewBorderColor;

lib/features/notes/presentation/widgets/read_only_editor.dart

@@ -4,7 +4,7 @@ import 'package:flutter_quill/flutter_quill.dart';
 import 'package:flutter_quill_extensions/flutter_quill_extensions.dart';
 
 class ReadOnlyEditor extends StatelessWidget {
-  QuillController? controller;
+  final QuillController? controller;
   final FocusNode _focusNode = FocusNode();
 
   ReadOnlyEditor({Key? key, required this.controller}) : super(key: key);