Switch to GitHub actions, update analysis options, fix analysis issues.

.github/workflows/platform.yml

@@ -0,0 +1,38 @@
+name: Process Package
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  workflow_dispatch:
+
+jobs:
+  correctness:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f
+      - uses: dart-lang/setup-dart@9a04e6d73cca37bd455e0608d7e5092f881fd603
+        with:
+          sdk: dev
+      - name: Install dependencies
+        run: dart pub upgrade
+      - name: Verify formatting
+        run: dart format --output=none --set-exit-if-changed .
+      - name: Analyze project source
+        run: dart analyze --fatal-infos
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        sdk: [stable, beta, dev]
+    steps:
+      - uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f
+      - uses: dart-lang/setup-dart@9a04e6d73cca37bd455e0608d7e5092f881fd603
+        with:
+          sdk: ${{ matrix.sdk }}
+      - name: Install dependencies
+        run: dart pub upgrade
+      - name: Run Tests
+        run: dart test

analysis_options.yaml

@@ -1,62 +1,6 @@
+include: package:lints/recommended.yaml
+
 analyzer:
-  enable-experiment:
-    - non-nullable
   errors:
     # Allow having TODOs in the code
     todo: ignore
-
-linter:
-  rules:
-    # these rules are documented on and in the same order as
-    # the Dart Lint rules page to make maintenance easier
-    # http://dart-lang.github.io/linter/lints/
-
-    # === error rules ===
-    - avoid_empty_else
-    - comment_references
-    - cancel_subscriptions
-    - close_sinks
-    - control_flow_in_finally
-    - empty_statements
-    - hash_and_equals
-    - invariant_booleans
-    - iterable_contains_unrelated_type
-    - list_remove_unrelated_type
-    - literal_only_boolean_expressions
-    - test_types_in_equals
-    - throw_in_finally
-    - unrelated_type_equality_checks
-    - valid_regexps
-
-    # === style rules ===
-    - always_declare_return_types
-    - always_specify_types
-    - annotate_overrides
-    - avoid_as
-    - avoid_init_to_null
-    - avoid_return_types_on_setters
-    - await_only_futures
-    - camel_case_types
-    - constant_identifier_names
-    - empty_constructor_bodies
-    - implementation_imports
-    - library_names
-    - library_prefixes
-    - non_constant_identifier_names
-    - one_member_abstracts
-    - only_throw_errors
-    - overridden_fields
-    - package_api_docs
-    - package_prefixed_library_names
-    - prefer_is_not_empty
-    - public_member_api_docs
-    - slash_for_doc_comments
-    - sort_constructors_first
-    - sort_unnamed_constructors_first
-    - type_annotate_public_apis
-    - type_init_formals
-    - unawaited_futures
-    - unnecessary_getters_setters
-
-    # === pub rules ===
-    - package_names

lib/src/interface/local_platform.dart

@@ -42,8 +42,7 @@ class LocalPlatform extends Platform {
   List<String> get executableArguments => io.Platform.executableArguments;
 
   @override
-  String? get packageRoot =>
-      io.Platform.packageRoot; // ignore: deprecated_member_use
+  String? get packageRoot => null;
 
   @override
   String? get packageConfig => io.Platform.packageConfig;

lib/src/interface/platform.dart

@@ -159,12 +159,14 @@ abstract class Platform {
   /// list containing the flags passed to the executable.
   List<String> get executableArguments;
 
-  /// The value of the `--package-root` flag passed to the executable
-  /// used to run the script in this isolate.  This is the directory in which
-  /// Dart packages are looked up.
+  /// Deprecated, do not use.
   ///
-  /// If there is no `--package-root` flag, `null` is returned.
-  @deprecated
+  /// This used to be the value of the `--package-root` flag passed to the
+  /// executable used to run the script in this isolate, but is no longer
+  /// supported in Dart 2.
+  ///
+  /// Always returns null.
+  @Deprecated('packages/ directory resolution is not supported in Dart 2.')
   String? get packageRoot;
 
   /// The value of the `--packages` flag passed to the executable

lib/src/testing/fake_platform.dart

@@ -72,8 +72,8 @@ class FakePlatform extends Platform {
   /// [json] must be a JSON string that matches the encoding produced by
   /// [toJson].
   factory FakePlatform.fromJson(String json) {
-    Map<String, dynamic> map = new JsonDecoder().convert(json);
-    return new FakePlatform(
+    Map<String, dynamic> map = JsonDecoder().convert(json);
+    return FakePlatform(
       numberOfProcessors: map['numberOfProcessors'],
       pathSeparator: map['pathSeparator'],
       operatingSystem: map['operatingSystem'],

pubspec.yaml

@@ -7,4 +7,5 @@ environment:
   sdk: '>=2.12.0 <3.0.0'
 
 dev_dependencies:
+  lints: ^1.0.1
   test: ^1.16.8

test/fake_platform_test.dart

@@ -32,13 +32,13 @@ void main() {
     late LocalPlatform local;
 
     setUp(() {
-      fake = new FakePlatform();
-      local = new LocalPlatform();
+      fake = FakePlatform();
+      local = LocalPlatform();
     });
 
     group('fromPlatform', () {
       setUp(() {
-        fake = new FakePlatform.fromPlatform(local);
+        fake = FakePlatform.fromPlatform(local);
       });
 
       test('copiesAllProperties', () {
@@ -61,7 +61,7 @@ void main() {
 
     group('copyWith', () {
       setUp(() {
-        fake = new FakePlatform.fromPlatform(local);
+        fake = FakePlatform.fromPlatform(local);
       });
 
       test('overrides a value, but leaves others intact', () {
@@ -85,7 +85,7 @@ void main() {
         expect(copy.localeName, local.localeName);
       });
       test('can override all values', () {
-        fake = new FakePlatform(
+        fake = FakePlatform(
           numberOfProcessors: 8,
           pathSeparator: ':',
           operatingSystem: 'fake',
@@ -94,7 +94,7 @@ void main() {
           environment: <String, String>{'PATH': '.'},
           executable: 'executable',
           resolvedExecutable: '/executable',
-          script: new Uri.file('/platform/test/fake_platform_test.dart'),
+          script: Uri.file('/platform/test/fake_platform_test.dart'),
           executableArguments: <String>['scriptarg'],
           version: '0.1.1',
           stdinSupportsAnsi: false,
@@ -125,8 +125,8 @@ void main() {
 
     group('json', () {
       test('fromJson', () {
-        String json = new io.File('test/platform.json').readAsStringSync();
-        fake = new FakePlatform.fromJson(json);
+        String json = io.File('test/platform.json').readAsStringSync();
+        fake = FakePlatform.fromJson(json);
         expect(fake.numberOfProcessors, 8);
         expect(fake.pathSeparator, '/');
         expect(fake.operatingSystem, 'macos');
@@ -139,7 +139,7 @@ void main() {
         expect(fake.executable, '/bin/dart');
         expect(fake.resolvedExecutable, '/bin/dart');
         expect(fake.script,
-            new Uri.file('/platform/test/fake_platform_test.dart'));
+            Uri.file('/platform/test/fake_platform_test.dart'));
         expect(fake.executableArguments, <String>['--checked']);
         expect(fake.packageRoot, null);
         expect(fake.packageConfig, null);
@@ -148,7 +148,7 @@ void main() {
       });
 
       test('fromJsonToJson', () {
-        fake = new FakePlatform.fromJson(local.toJson());
+        fake = FakePlatform.fromJson(local.toJson());
         _expectPlatformsEqual(fake, local);
       });
     });