Index: lib/src/stream_sink_transformer/typed.dart |
diff --git a/lib/src/stream_sink_transformer/typed.dart b/lib/src/stream_sink_transformer/typed.dart |
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index 0000000000000000000000000000000000000000..303bc08d76101d34679e1ada89945ab76d43fb7e |
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+// Copyright (c) 2016, 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. |
+ |
+import 'dart:async'; |
+ |
+import '../delegate/stream_sink.dart'; |
+import '../stream_sink_transformer.dart'; |
+ |
+/// A wrapper that coerces the generic type of the sink returned by an inner |
+/// transformer to `S`. |
+class TypeSafeStreamSinkTransformer<S, T> |
+ implements StreamSinkTransformer<S, T> { |
+ final StreamSinkTransformer _inner; |
+ |
+ TypeSafeStreamSinkTransformer(this._inner); |
+ |
+ StreamSink<S> bind(StreamSink<T> sink) => |
+ DelegatingStreamSink.typed(_inner.bind(sink)); |
+} |