A lightweight in-process messenger.

[AsyncMessage]
public class FakeAsyncMessage { }

[SyncMessage]
public class FakeSyncMessage { }

services.AddReactiveMessenger()

app.UseReactiveMesenger()

messenger.RegisterSyncMessage<FakeSyncMessage>()

messenger.SendSyncMessage<FakeSyncMessage>(new())

messenger.GetSyncMessenger<FakeSyncMessage>(new()).Subscribe(payload => { //payload is FakeSyncMessage })

Synchronous messenger sends messages in sequence on the same thread the SendSyncMessage is called while asychronous messenger sends messages in sequence on a different thread than the one called SendAsyncMessage.