doc_import_cannot_be_deferred

Doc imports can't be deferred.

The analyzer produces this diagnostic when a documentation import uses the deferred keyword.

Documentation imports can't be deferred because deferring them wouldn't impact the size of the compiled code.

The following code produces this diagnostic because the documentation import has a deferred keyword:

// ignore:missing_prefix_in_deferred_import
/// @docImport 'package:meta/meta.dart' deferred;
library;

Remove the deferred keyword:

/// @docImport 'package:meta/meta.dart';
library;