library_prefixes

The prefix '{0}' isn't a lower_case_with_underscores identifier.

The analyzer produces this diagnostic when an import prefix doesn't use the lower_case_with_underscores naming convention.

The following code produces this diagnostic because the prefix ffiSupport isn't a lower_case_with_underscores identifier:

import 'package:ffi/ffi.dart' as ffiSupport;

Convert the prefix to use the lower_case_with_underscores naming convention:

import 'package:ffi/ffi.dart' as ffi_support;

Unless stated otherwise, the documentation on this site reflects Dart 3.8.1. Page last updated on 2025-05-08. View source or report an issue.