file_names

Details about the 'file_names' diagnostic produced by the Dart analyzer.

more_vert

The file name '{0}' isn't a lower_case_with_underscores identifier.

The analyzer produces this diagnostic when the name of a .dart file doesn't use lower_case_with_underscores.

A file named SliderMenu.dart produces this diagnostic because the file name uses the UpperCamelCase convention.

Rename the file to use the lower_case_with_underscores convention, such as slider_menu.dart.