Update to Dart 3

Author: cachapa

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 4.0.3
+- Update to Dart 3
+
 ## 4.0.2
 - Add purge() method to reset the data store
 

analysis_options.yaml

@@ -1,14 +1,6 @@
-# Defines a default set of lint rules enforced for
-# projects at Google. For details and rationale,
-# see https://github.com/dart-lang/pedantic#enabled-lints.
-include: package:pedantic/analysis_options.yaml
+include: package:lints/recommended.yaml
 
-# For lint rules and documentation, see http://dart-lang.github.io/linter/lints.
-# Uncomment to specify additional rules.
-# linter:
-#   rules:
-#     - camel_case_types
-
-analyzer:
-#   exclude:
-#     - path/to/excluded/files/**
+linter:
+  rules:
+    prefer_single_quotes: true
+    unawaited_futures: true

lib/src/crdt.dart

@@ -20,13 +20,13 @@ abstract class Crdt<K, V> {
 
   /// Returns a simple key-value map without HLCs or deleted records.
   /// See [recordMap].
-  Map<K, V> get map =>
+  Map<K, V?> get map =>
       (recordMap()..removeWhere((_, record) => record.isDeleted))
-          .map((key, record) => MapEntry(key, record.value!));
+          .map((key, record) => MapEntry(key, record.value));
 
   List<K> get keys => map.keys.toList();
 
-  List<V> get values => map.values.toList();
+  List<V?> get values => map.values.toList();
 
   Crdt() {
     refreshCanonicalTime();

lib/src/hlc.dart

@@ -107,7 +107,7 @@ class Hlc<T> implements Comparable<Hlc> {
       '-$nodeId';
 
   @override
-  int get hashCode => toString().hashCode;
+  int get hashCode => Object.hash(millis, counter, nodeId).hashCode;
 
   @override
   bool operator ==(other) => other is Hlc<T> && compareTo(other) == 0;

lib/src/record.dart

@@ -34,6 +34,9 @@ class Record<V> {
   bool operator ==(other) =>
       other is Record<V> && hlc == other.hlc && value == other.value;
 
+  @override
+  int get hashCode => Object.hash(hlc, value, modified);
+
   @override
   String toString() => toJson('').toString();
 }

pubspec.yaml

@@ -1,16 +1,16 @@
 name: crdt
 description: Dart implementation of Conflict-free Replicated Data Types (CRDTs).
-version: 4.0.2
+version: 4.0.3
 homepage: https://github.com/cachapa/crdt
 repository: https://github.com/cachapa/crdt
 issue_tracker: https://github.com/cachapa/crdt/issues
 
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=3.0.0 <4.0.0'
 
 dependencies:
   # no dependencies, no problems
 
 dev_dependencies:
-  pedantic: ^1.11.0
-  test: ^1.17.4
+  lints: any
+  test: any

test/map_crdt_test.dart

@@ -290,6 +290,9 @@ class TestClass {
   @override
   bool operator ==(other) => other is TestClass && test == other.test;
 
+  @override
+  int get hashCode => test.hashCode;
+
   @override
   String toString() => test;
 }