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packages/barback/lib/src/transformer/transform_logger.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library barback.transformer.transform_logger;
 
 import 'package:source_span/source_span.dart';
 
 import '../asset/asset_id.dart';
 import '../log.dart';
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   /// primary input nor any outputs emitted by the transformer will be passed on
   /// to the following phase, and the build will be reported as having failed.
   ///
   /// Unlike throwing an exception, this doesn't cause a transformer to stop
   /// running. This makes it useful in cases where a single input may have
   /// multiple errors that the user wants to know about.
   void error(String message, {AssetId asset, SourceSpan span}) {
     _logFunction(asset, LogLevel.ERROR, message, span);
   }
 }