Index: packages/barback/test/transformer/mock_aggregate.dart |
diff --git a/packages/barback/test/transformer/mock_aggregate.dart b/packages/barback/test/transformer/mock_aggregate.dart |
index 1b1fefd77cc156daa571f7d175e68169f6f2654b..b0206370f09d44ac774bfbbc8dc8ce6d5d789eeb 100644 |
--- a/packages/barback/test/transformer/mock_aggregate.dart |
+++ b/packages/barback/test/transformer/mock_aggregate.dart |
@@ -51,7 +51,7 @@ abstract class MockAggregateTransformer extends AggregateTransformer { |
/// |
/// Once this transformer finishes running, this is reset to a new completer, |
/// so it can be used multiple times. |
- var _started = new Completer(); |
+ var _started = new Completer<Null>(); |
/// `true` if any transforms are currently running. |
/// |