Remove unnecessary imports

analysis_options.yaml

@@ -10,6 +10,12 @@ analyzer:
     - tools/analyzer_plugin/**
     - ddc_precompiled/**
   errors:
+    duplicate_import: warning
+    must_call_super: error
+    unused_import: warning
+    unnecessary_import: warning
+    unnecessary_null_comparison: warning
+
     # Workaround for https://github.com/dart-lang/sdk/issues/51087
     # TODO remove once we're no longer running CI on Dart 2.18
     part_of_different_library: ignore

example/suspense/lazy.dart

@@ -12,7 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import 'dart:js';
 import 'dart:js_util';
 
 import 'package:js/js.dart';

lib/src/builder/parsing/ast_util.dart

@@ -16,7 +16,6 @@ import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/syntactic_entity.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
-import 'package:collection/collection.dart' show IterableExtension;
 import 'package:over_react/src/builder/codegen/names.dart';
 import 'package:source_span/source_span.dart';
 import 'package:transformer_utils/transformer_utils.dart';

lib/src/builder/parsing/member_association.dart

@@ -14,7 +14,6 @@
 
 import 'ast_util.dart';
 import 'members.dart';
-import 'package:collection/collection.dart' show IterableExtension;
 import 'util.dart';
 
 /// Removes the generated prefix from anywhere inside of [name].

lib/src/builder/parsing/members.dart

@@ -15,7 +15,6 @@
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:build/build.dart' show log;
-import 'package:collection/collection.dart' show IterableExtension;
 import 'package:meta/meta.dart';
 import 'package:over_react/src/builder/codegen/names.dart';
 import 'package:over_react/src/component_declaration/annotations.dart' as annotations;
@@ -24,12 +23,6 @@ import 'package:over_react/src/util/string_util.dart';
 
 import '../parsing.dart';
 import '../util.dart';
-import 'ast_util.dart';
-import 'declarations.dart';
-import 'members_from_ast.dart';
-import 'meta.dart';
-import 'error_collection.dart';
-import 'version.dart';
 
 part 'members/component.dart';
 part 'members/factory.dart';

lib/src/builder/util.dart

@@ -16,7 +16,6 @@ import 'dart:mirrors';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:build/build.dart' show AssetId;
-import 'package:collection/collection.dart' show IterableExtension;
 import 'package:over_react/src/builder/parsing.dart';
 import 'package:path/path.dart' as p;
 import 'package:source_span/source_span.dart';

lib/src/component/_deprecated/abstract_transition.dart

@@ -22,7 +22,6 @@ import 'package:meta/meta.dart';
 import 'package:over_react/over_react.dart';
 import 'package:over_react/component_base.dart' as component_base;
 
-import '../abstract_transition.dart' show TransitionPhase;
 export '../abstract_transition.dart' show TransitionPhase;
 
 part 'abstract_transition.over_react.g.dart';

lib/src/component/prop_typedefs.dart

@@ -17,7 +17,6 @@ library over_react.prop_typedefs;
 
 import 'package:over_react/over_react.dart';
 import 'package:over_react/src/component_declaration/component_base.dart' as component_base;
-import 'package:react/react_client.dart';
 
 /// A custom rendering prop typedef that allows a custom rendering function to be provided
 /// with the current [props] and [state] of the [component].

lib/src/over_react_redux/over_react_flux.dart

@@ -18,7 +18,6 @@ import 'dart:html';
 import 'package:meta/meta.dart';
 import 'package:over_react/over_react.dart';
 import 'package:over_react/over_react_redux.dart';
-import 'package:over_react/src/util/equality.dart';
 import 'package:redux/redux.dart' as redux;
 import 'package:w_flux/w_flux.dart' as flux;
 

lib/src/util/promise_interop.dart

@@ -1,6 +1,5 @@
 @JS()
 library over_react.promise_interop;
-import 'dart:js';
 
 import 'package:js/js.dart';
 

lib/src/util/react_wrappers.dart

@@ -24,7 +24,6 @@ import 'package:over_react/over_react.dart';
 import 'package:over_react/src/component_declaration/component_type_checking.dart';
 import 'package:react/react.dart' as react;
 import 'package:react/react_client.dart';
-import 'package:react/react_client/js_backed_map.dart';
 import 'package:react/react_client/js_interop_helpers.dart' show jsifyAndAllowInterop;
 import 'package:react/react_client/react_interop.dart' hide createRef;
 import 'package:react/react_dom.dart' as react_dom;

lib/src/util/rem_util.dart

@@ -23,7 +23,6 @@ import 'package:meta/meta.dart';
 import 'package:over_react/over_react.dart';
 import 'package:over_react/components.dart' as v2;
 import 'package:over_react/src/component_declaration/component_base.dart' as component_base;
-import 'package:over_react/src/util/css_value_util.dart';
 import 'package:over_react/react_dom.dart' as react_dom;
 import 'package:platform_detect/platform_detect.dart';
 

test/over_react/component/element_type_test.dart

@@ -16,7 +16,6 @@ library element_type_test;
 
 import 'package:test/test.dart';
 import 'package:over_react/over_react.dart';
-import 'package:over_react/src/component/dom_components.dart';
 
 part 'element_type_test.over_react.g.dart'; // ignore: uri_has_not_been_generated
 

test/over_react/component/memo_test.dart

@@ -14,7 +14,6 @@
 
 library memo_test;
 
-import 'package:over_react/src/util/memo.dart';
 import 'package:over_react_test/over_react_test.dart';
 import 'package:test/test.dart';
 import 'package:over_react/over_react.dart';

test/over_react/component/ref_util_test.dart

@@ -20,7 +20,6 @@ import 'dart:js_util';
 import 'package:meta/meta.dart';
 import 'package:test/test.dart';
 import 'package:over_react/over_react.dart';
-import 'package:over_react/src/component/dom_components.dart';
 
 import '../../test_util/test_util.dart';
 import '../component/fixtures/basic_child_component.dart';

test/over_react/component_declaration/component_base_test.dart

@@ -22,7 +22,6 @@ import 'dart:html';
 import 'package:js/js_util.dart';
 import 'package:over_react/over_react.dart' show Dom, DummyComponent, DummyComponent2, JsBackedMap, UiComponent2, UiStatefulComponent2, ValidationUtil, domProps, registerComponent2;
 import 'package:over_react/over_react.dart' as over_react;
-import 'package:over_react_test/over_react_test.dart';
 import 'package:over_react/src/component_declaration/component_base.dart';
 import 'package:over_react/src/component_declaration/component_type_checking.dart';
 import 'package:pedantic/pedantic.dart';

test/over_react/util/prop_key_util_test_dart2.dart

@@ -16,7 +16,6 @@
 
 import 'package:test/test.dart';
 import 'package:over_react/over_react.dart';
-import 'package:over_react/src/util/prop_key_util.dart';
 
 part 'prop_key_util_test_dart2.over_react.g.dart';
 

test/over_react/util/safe_render_manager/safe_render_manager_test.dart

@@ -21,7 +21,6 @@ import 'dart:html';
 
 import 'package:react/react.dart' as react;
 import 'package:over_react/over_react.dart';
-import 'package:over_react/src/util/safe_render_manager/safe_render_manager.dart';
 import 'package:over_react_test/over_react_test.dart';
 import 'package:test/test.dart';
 import 'package:w_common/disposable.dart';

test/vm_tests/builder/declaration_parsing_test.dart

@@ -20,13 +20,10 @@ library declaration_parsing_test;
 import 'package:analyzer/dart/analysis/utilities.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:build_test/build_test.dart' show recordLogs;
-import 'package:collection/collection.dart' show IterableExtension;
 import 'package:logging/logging.dart';
 import 'package:meta/meta.dart';
 import 'package:mocktail/mocktail.dart';
 import 'package:over_react/src/builder/parsing.dart';
-import 'package:over_react/src/builder/parsing/member_association.dart';
-import 'package:over_react/src/builder/parsing/error_collection.dart';
 import 'package:over_react/src/component_declaration/annotations.dart' as annotations;
 import 'package:source_span/source_span.dart';
 import 'package:test/test.dart';

test/vm_tests/builder/parsing/member_association_test.dart

@@ -12,8 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-@TestOn('vm')
-import 'package:over_react/src/builder/parsing/member_association.dart';
 import 'package:over_react/src/builder/parsing.dart';
 import 'package:test/test.dart';
 

web/component2/src/demos/custom_error_boundary.dart

@@ -14,7 +14,6 @@
 
 // ignore_for_file: deprecated_member_use_from_same_package
 import 'package:over_react/over_react.dart';
-import 'package:react/react_client/react_interop.dart';
 
 part 'custom_error_boundary.over_react.g.dart';
 

web/flux_to_redux/advanced/examples/influx_implementation/components/connect_flux_big_block.dart

@@ -15,7 +15,6 @@
 import 'package:over_react/over_react.dart';
 import 'package:over_react/over_react_flux.dart';
 import 'package:over_react/over_react_redux.dart';
-import 'package:over_react/src/util/hoc.dart';
 
 import '../store.dart';
 import '../../../components/little_block.dart';