Is there an idiomatic way to wait until a job is active? When I collect a hot flow it can be the case that between the ‘launchIn’ of the collect and a new emission to the hot flow the collector job hasn't started. Assume I have no ownership over the replay :)

Do you have this problem in real life or in tests? If the latter, you should use utilities like `kotlinx-coroutines-test`'s

runCurrent

or

advanceUntilIdle

to ensure your coroutines have progressed enough

In real life. In tests I have it working with runCurrent indeed.

Ok got it. In any case, using

launchIn

, the job is likely active from the start, but that doesn't mean it reached the suspension on the

collect

- so it would be of no use to you to wait for this event even if you could

I'll try that, thanks!

Glad to hear! I'm happy to help 🙂 Btw sorry I didn't reply on your last post afterwards, I was on mobile and I couldn't really write any code or test anything

Haha no worries. You've been incredibly helpful.

https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.flow/on-subscription.html can be useful as well

onSubscription

does not help here. It waits for the subscription on the

SharedFlow

to be setup so if an event is emitted, it won't be missed but it does not wait for the suspension point on

collect

so the “shared" coroutine may not have done anything.