N-API Threadsafe call asynchronous javascript callback

[gryor]

Version: v10.8.0
Platform: Linux 4.17.11 x86_64 GNU/Linux

By using the new threadsafe functions I am able to call javascript from another thread and return synchronously a value (e.g. a number) from javascript to another thread.

What is the proper way to call a threadsafe function -> pass arguments to javascript -> await for a result -> return the result -> pass the result back to another thread?

[mhdawson]

Think this should be covered in nodejs/help#1412