duplicate_ part
The library already contains a part with the URI '{0}'.
Description
#The analyzer produces this diagnostic when a single file is referenced in multiple part directives.
Example
#Given a file part.dart
containing
part of 'test.dart';
The following code produces this diagnostic because the file
part.dart
is
included multiple times:
part 'part.dart';
part 'part.dart';
Common fixes
#Remove all except the first of the duplicated part directives:
part 'part.dart';
Unless stated otherwise, the documentation on this site reflects Dart 3.9.2. Page last updated on 2025-9-1. View source or report an issue.