Fix linter issues

analysis_options.yaml

@@ -5,6 +5,7 @@ linter:
     parameter_assignments: true
     prefer_function_declarations_over_variables: false
     ambiguous_extension_member_access: false
+    require_trailing_commas: false
 analyzer:
   exclude:
     - example/**

lib/src/verify.dart

@@ -1,11 +1,10 @@
 import 'package:dartz/dartz.dart';
 import 'package:verify/verify.dart';
 
-import 'base_types.dart';
 export 'package:dartz/dartz.dart' show Either;
 
-part 'verify_utils.dart';
 part 'verify_factories.dart';
+part 'verify_utils.dart';
 
 /// Extension for methods related to subfield validations.
 extension VerifyProperties<S> on Validator<S> {
@@ -27,7 +26,9 @@ extension VerifyProperties<S> on Validator<S> {
   /// the focused field is null. This is common when validating forms in which null represents
   /// a field which has not being visited.
   Validator<S> checkField<F>(
-      Selector<S, F?> selector, Validator<F> verification) {
+    Selector<S, F?> selector,
+    Validator<F> verification,
+  ) {
     final bypassingValidation = _makeOptional(verification);
     final Validator<S> fieldValidator = (S s) {
       final focus = selector(s);
@@ -57,7 +58,8 @@ extension ValidatorUtils<S, T> on ValidatorT<S, T> {
   /// When supplied a type parameter the error list will be filtered
   /// to all errors that have the given type.
   Either<List<ErrorType>, T> verify<ErrorType extends ValidationError>(
-      S subject) {
+    S subject,
+  ) {
     return this(subject).leftMap((errors) {
       final Iterable<ErrorType> filtered = errors.whereType();
       return filtered.toList();

lib/src/verify_factories.dart

@@ -38,8 +38,10 @@ extension Verify on ValidatorT {
   }
 
   /// Creates a validator on S by applying a validator on a subfield of S.
-  static Validator<S> at<S, T>(Selector<S, T> selector,
-      {required Validator<T> validator}) {
+  static Validator<S> at<S, T>(
+    Selector<S, T> selector, {
+    required Validator<T> validator,
+  }) {
     return (S subject) {
       final field = selector(subject);
       return validator(field).fold((l) => Left(l), (_) => Right(subject));

pubspec.lock

@@ -386,4 +386,4 @@ packages:
     source: hosted
     version: "3.1.2"
 sdks:
-  dart: ">=3.1.0 <4.0.0"
+  dart: ">=3.0.0 <4.0.0"

test/verify_test.dart

@@ -1,7 +1,7 @@
+import 'package:collection/collection.dart';
 import 'package:dartz/dartz.dart';
-import 'package:verify/verify.dart';
 import 'package:test/test.dart';
-import 'package:collection/collection.dart';
+import 'package:verify/verify.dart';
 
 import 'data/enumerated_error.dart';
 import 'data/error.dart';
@@ -77,7 +77,7 @@ void main() {
   test('join only accumulates on error at a time', () {
     final numberValidator = Verify.subject<int>()
         .then(Verify.that(
-          (subject) => subject % 2 == 0,
+          (subject) => subject.isEven,
           error: Error('not even'),
         ))
         .then(Verify.that(