close_sinks
Unclosed instance of 'Sink'.
Description
#The analyzer produces this diagnostic when an instance of Sink
is created but the method close
isn't invoked.
Example
#The following code produces this diagnostic because the sink
isn't closed:
dart
import 'dart:io';
void g(File f) {
var sink = f.openWrite();
sink.write('x');
}
Common fixes
#Close the sink:
dart
import 'dart:io';
void g(File f) {
var sink = f.openWrite();
sink.write('x');
sink.close();
}
Unless stated otherwise, the documentation on this site reflects Dart 3.7.3. Page last updated on 2025-05-08. View source or report an issue.