🔥 Remove unnecessary exclude in options.

analysis_options.yaml

@@ -22,8 +22,6 @@ analyzer:
   strong-mode:
     implicit-casts: false
     implicit-dynamic: false
-  enable-experiment:
-    - extension-methods
   errors:
     # treat missing required parameters as a warning (not a hint)
     missing_required_param: warning
@@ -41,7 +39,6 @@ analyzer:
     # see https://github.com/dart-lang/sdk/issues/28463
     - "lib/i18n/messages_*.dart"
     - "lib/src/http/**"
-    - "lib/openjmu_*.dart"
 
 linter:
   rules:
@@ -62,7 +59,7 @@ linter:
     - avoid_classes_with_only_static_members
     # - avoid_double_and_int_checks # only useful when targeting JS runtime
     - avoid_empty_else
-    # - avoid_equals_and_hash_code_on_mutable_classes # not yet tested
+    - avoid_equals_and_hash_code_on_mutable_classes
     - avoid_field_initializers_in_const_classes
     - avoid_function_literals_in_foreach_calls
     # - avoid_implementing_value_types # not yet tested
@@ -82,7 +79,7 @@ linter:
     # - avoid_returning_this # there are plenty of valid reasons to return this
     # - avoid_setters_without_getters # not yet tested
     # - avoid_shadowing_type_parameters # not yet tested
-    # - avoid_single_cascade_in_expression_statements # not yet tested
+    - avoid_single_cascade_in_expression_statements
     - avoid_slow_async_io
     - avoid_types_as_parameter_names
     # - avoid_types_on_closure_parameters # conflicts with always_specify_types