Some classes override operator == with a nullable parameter #117838
Description
At runtime, a null value is never passed to ==. No class should ever expect that it might get a nullable type.
I see the following two operator == overrides which accept a nullable parameter:
warning • The parameter type of '==' operators should be non-nullable • packages/flutter/lib/src/material/about.dart:759:17 • non_nullable_equals_parameter
warning • The parameter type of '==' operators should be non-nullable • packages/flutter/test/rendering/mouse_tracker_cursor_test.dart:465:17 • non_nullable_equals_parameter
See dart-lang/sdk#58753 which will soon be enforced.