diff --git a/pkgs/test_api/lib/src/frontend/async_matcher.dart b/pkgs/test_api/lib/src/frontend/async_matcher.dart
new file mode 100644
index 0000000..29febba
--- /dev/null
+++ b/pkgs/test_api/lib/src/frontend/async_matcher.dart
@@ -0,0 +1,9 @@
+// Copyright (c) 2021, 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.
+
+@deprecated
+library test_api.src.frontend.async_matcher;
+
+// Temporary re-export to reduce churn in flutter_test.
+export '../expect/async_matcher.dart';
diff --git a/pkgs/test_api/lib/src/frontend/expect.dart b/pkgs/test_api/lib/src/frontend/expect.dart
new file mode 100644
index 0000000..58b14d9
--- /dev/null
+++ b/pkgs/test_api/lib/src/frontend/expect.dart
@@ -0,0 +1,9 @@
+// Copyright (c) 2021, 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.
+
+@deprecated
+library test_api.src.frontend.expect;
+
+// Temporary re-export to avoid churn in analyzer tests.
+export '../expect/expect.dart';