Tell analyzer about bin/ and web/ directories

lib/src/find_class_elements.dart

@@ -25,9 +25,10 @@ Future<Iterable<ClassElement>> findClassElements({
 
   final contextCollection = AnalysisContextCollection(
     includedPaths: [
-      // TODO: Handle other possible directories like web/ and bin/
       makePackageSubPath('lib'),
       makePackageSubPath('lib', 'src'),
+      makePackageSubPath('bin'),
+      makePackageSubPath('web'),
     ],
   );
 

test/fixtures/bindir/bin/bindir.dart

@@ -0,0 +1,8 @@
+class Foo {
+  String message = 'hello, world';
+}
+
+void main() {
+  final f = Foo();
+  print(f.message);
+}

test/fixtures/bindir/lib/external.dart

@@ -0,0 +1 @@
+class Bar {}

test/fixtures/bindir/pubspec.lock

@@ -0,0 +1,166 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "17.0.0"
+  analyzer:
+    dependency: transitive
+    description:
+      name: analyzer
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
+  async:
+    dependency: transitive
+    description:
+      name: async
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.5.0"
+  charcode:
+    dependency: transitive
+    description:
+      name: charcode
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
+  cli_util:
+    dependency: transitive
+    description:
+      name: cli_util
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.3.0"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.15.0"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.0"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.0"
+  dcdg:
+    dependency: "direct dev"
+    description:
+      path: "../../.."
+      relative: true
+    source: path
+    version: "3.1.1"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.1.0"
+  glob:
+    dependency: transitive
+    description:
+      name: glob
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.0"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.8.0"
+  pedantic:
+    dependency: transitive
+    description:
+      name: pedantic
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.11.0"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.0"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.8.1"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.1.0"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.2.0"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.3.0"
+  watcher:
+    dependency: transitive
+    description:
+      name: watcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.0"
+sdks:
+  dart: ">=2.12.0 <3.0.0"

test/fixtures/bindir/pubspec.yaml

@@ -0,0 +1,7 @@
+name: bindir_fixture
+description: A test fixture that uses the bin/ directory
+environment:
+  sdk: '>=2.12.0 <3.0.0'
+dev_dependencies:
+  dcdg:
+    path: ../../../

test/functional/bindir_test.dart

@@ -0,0 +1,23 @@
+import 'package:test/test.dart';
+
+import 'utils.dart';
+
+void main() {
+  setUpAll(() {
+    pubGetFixtures();
+  });
+
+  group('dcdg tool (bindir cases)', () {
+    test('should run successfully on a project bin/ directory', () {
+      final result = runWith(
+        [
+          '-s',
+          'bin',
+        ],
+        'test/fixtures/bindir/',
+      );
+      expect(result.stderr, '');
+      expect(result.exitCode, 0);
+    });
+  });
+}