This might very well be the most advanced client for JS/TS. However, to be honest, it's very hard even to get started due to the near-total lack of documentation. You should really take a week off from writing code and just work on docs, in my not so humble opinion. For instance, I struggle to see the difference between a Producer's send, buffer and bufferFormat methods. Please update the docs so we can use this driver!
Apparently there's a lack of good drivers for Kafka in the Node world in general, so if this is as good as you claim, please write documentation which shows it and underpins it.