Add support for "topics" field (dart-lang/pubspec_parse#93)

diff --git a/pkgs/pubspec_parse/CHANGELOG.md b/pkgs/pubspec_parse/CHANGELOG.md
index 5cf26e0..023e2a1 100644
--- a/pkgs/pubspec_parse/CHANGELOG.md
+++ b/pkgs/pubspec_parse/CHANGELOG.md

@@ -1,7 +1,8 @@
-## 1.2.2-dev
+## 1.2.2
 
 - Require Dart SDK >= 2.18.0
 - Required `json_annotation: ^4.8.0`
+- Added support for `topics` field.
 
 ## 1.2.1
 

diff --git a/pkgs/pubspec_parse/lib/src/pubspec.dart b/pkgs/pubspec_parse/lib/src/pubspec.dart
index 9943da8..188af31 100644
--- a/pkgs/pubspec_parse/lib/src/pubspec.dart
+++ b/pkgs/pubspec_parse/lib/src/pubspec.dart

@@ -44,6 +44,9 @@
   /// support or funding.
   final List<Uri>? funding;
 
+  /// Optional field to list the topics that this packages belongs to.
+  final List<String>? topics;
+
   /// Optional field for specifying included screenshot files.
   @JsonKey(fromJson: parseScreenshots)
   final List<Screenshot>? screenshots;
@@ -106,6 +109,7 @@
     this.repository,
     this.issueTracker,
     this.funding,
+    this.topics,
     this.screenshots,
     this.documentation,
     this.description,

diff --git a/pkgs/pubspec_parse/lib/src/pubspec.g.dart b/pkgs/pubspec_parse/lib/src/pubspec.g.dart
index a1312a5..6229994 100644
--- a/pkgs/pubspec_parse/lib/src/pubspec.g.dart
+++ b/pkgs/pubspec_parse/lib/src/pubspec.g.dart

@@ -32,6 +32,8 @@
               (v) => (v as List<dynamic>?)
                   ?.map((e) => Uri.parse(e as String))
                   .toList()),
+          topics: $checkedConvert('topics',
+              (v) => (v as List<dynamic>?)?.map((e) => e as String).toList()),
           screenshots: $checkedConvert(
               'screenshots', (v) => parseScreenshots(v as List?)),
           documentation: $checkedConvert('documentation', (v) => v as String?),

diff --git a/pkgs/pubspec_parse/pubspec.yaml b/pkgs/pubspec_parse/pubspec.yaml
index 9614044..6374263 100644
--- a/pkgs/pubspec_parse/pubspec.yaml
+++ b/pkgs/pubspec_parse/pubspec.yaml

@@ -2,7 +2,7 @@
 description: >-
   Simple package for parsing pubspec.yaml files with a type-safe API and rich
   error reporting.
-version: 1.2.2-dev
+version: 1.2.2
 repository: https://github.com/dart-lang/pubspec_parse
 
 environment:

diff --git a/pkgs/pubspec_parse/test/parse_test.dart b/pkgs/pubspec_parse/test/parse_test.dart
index f3b4679..e181ca6 100644
--- a/pkgs/pubspec_parse/test/parse_test.dart
+++ b/pkgs/pubspec_parse/test/parse_test.dart

@@ -53,6 +53,7 @@
       'funding': [
         'https://patreon.com/example',
       ],
+      'topics': ['widget', 'button'],
       'screenshots': [
         {'description': 'my screenshot', 'path': 'path/to/screenshot'}
       ],
@@ -77,6 +78,9 @@
     );
     expect(value.funding, hasLength(1));
     expect(value.funding!.single.toString(), 'https://patreon.com/example');
+    expect(value.topics, hasLength(2));
+    expect(value.topics!.first, 'widget');
+    expect(value.topics!.last, 'button');
     expect(value.screenshots, hasLength(1));
     expect(value.screenshots!.first.description, 'my screenshot');
     expect(value.screenshots!.first.path, 'path/to/screenshot');
@@ -386,6 +390,42 @@
       );
     });
   });
+  group('topics', () {
+    test('not a list', () {
+      expectParseThrowsContaining(
+        {
+          ...defaultPubspec,
+          'topics': 1,
+        },
+        "Unsupported value for \"topics\". type 'int' is not a subtype of type 'List<dynamic>?'",
+        skipTryPub: true,
+      );
+    });
+
+    test('not a string', () {
+      expectParseThrowsContaining(
+        {
+          ...defaultPubspec,
+          'topics': [1],
+        },
+        "Unsupported value for \"topics\". type 'int' is not a subtype of type 'String'",
+        skipTryPub: true,
+      );
+    });
+
+    test('invalid data - lenient', () {
+      final value = parse(
+        {
+          ...defaultPubspec,
+          'topics': [1],
+        },
+        skipTryPub: true,
+        lenient: true,
+      );
+      expect(value.name, 'sample');
+      expect(value.topics, isNull);
+    });
+  });
 
   group('screenshots', () {
     test('one screenshot', () {