Update package:lints and clean up library declarations (#2436)

Author: parlough

analysis_options.yaml

@@ -10,7 +10,6 @@ analyzer:
 linter:
   rules:
     - always_declare_return_types
-    - always_require_non_null_named_parameters
     - annotate_overrides
     - avoid_classes_with_only_static_members
     - avoid_empty_else
@@ -20,7 +19,6 @@ linter:
     - avoid_relative_lib_imports
     - avoid_renaming_method_parameters
     - avoid_return_types_on_setters
-    - avoid_returning_null
     - avoid_returning_null_for_void
     - avoid_returning_this
     - avoid_shadowing_type_parameters
@@ -63,7 +61,6 @@ linter:
     - prefer_conditional_assignment
     - prefer_const_constructors
     - prefer_contains
-    - prefer_equal_for_default_values
     - prefer_final_fields
     - prefer_for_elements_to_map_fromIterable
     - prefer_function_declarations_over_variables

dwds/debug_extension/web/background.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 @JS()
-library background;
+library;
 
 import 'package:dwds/data/debug_info.dart';
 import 'package:js/js.dart';

dwds/debug_extension/web/cider_connection.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 @JS()
-library cider_connection;
+library;
 
 import 'dart:convert';
 import 'dart:js_util';

dwds/debug_extension/web/copier.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 @JS()
-library copier;
+library;
 
 import 'dart:html';
 

dwds/debug_extension/web/cross_extension_communication.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 @JS()
-library cross_extension_communication;
+library;
 
 import 'package:js/js.dart';
 

dwds/debug_extension/web/debug_info.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 @JS()
-library debug_info;
+library;
 
 import 'dart:convert';
 import 'dart:html';

dwds/debug_extension/web/debug_session.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 @JS()
-library debug_session;
+library;
 
 import 'dart:async';
 import 'dart:convert';

dwds/debug_extension/web/detector.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 @JS()
-library detector;
+library;
 
 import 'dart:convert';
 import 'dart:html';

dwds/debug_extension/web/devtools.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 @JS()
-library devtools;
+library;
 
 import 'dart:html';
 

dwds/debug_extension/web/logger.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 @JS()
-library logger;
+library;
 
 import 'package:js/js.dart';