fb29d0e96d
This allows to break a circular dependency between package:expect and package:async_helper, which will simplify the support for modular tests using package:modular_test. Change-Id: Ie48723d3f35d51a8fbe622e0158450e8104fe3f5 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/102140 Reviewed-by: Johnni Winther <johnniwinther@google.com>