invalid_export_of_internal_element

The member '{0}' can't be exported as a part of a package's public API.

The analyzer produces this diagnostic when a public library exports a declaration that is marked with the internal annotation.

Given a file a.dart in the src directory that contains:

import 'package:meta/meta.dart';

@internal class One {}

The following code, when found in a public library produces this diagnostic because the export directive is exporting a name that is only intended to be used internally:

export 'src/a.dart';

If the export is needed, then add a hide clause to hide the internal names:

export 'src/a.dart' hide One;

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