TSFN callback queue behavior clarification

Affected URL(s)

https://nodejs.org/api/n-api.html#asynchronous-thread-safe-function-calls

Description of the problem

Does a TSFN call only one callback from its queue per iteration of the event loop or does it call all callbacks in the queue in one iteration? Or maybe there is there some other policy?

Perhaps this detail could be clarified in the docs?

Thanks!