Duplicate importDRT-W1310

The analyzer produces this diagnostic when an import directive is found that is the same as an import before it in the file. The second import doesn't add value and should be removed.

Example

The following code produces this diagnostic:

import 'package:meta/meta.dart';
import 'package:meta/meta.dart';

@sealed class C {}

Common fixes

Remove the unnecessary import:

import 'package:meta/meta.dart';

@sealed class C {}