If I'm in a

callbackFlow

what's the best way to determine if I should still emit?

isActive

or

!isClosedForSend

(or both)?

just remove your callback in

awaitClose { }

. With new channel api (coroutines 1.5+) it's safe to call `trySend`/`trySendBlocking` anyway.

I think I've encountered race conditions in the past where my listener was still invoked (maybe a concurrent invocation with

awaitClose

firing or something like that), although I'm not 100% sure I didn't start doing this following the pattern that I use with

suspendCancellableCoroutine