Returns a Writable ObjectMode Stream that allows a certain number of simultaneous promises, and triggers stream backpressure when the concurrency limit is hit.
Errors are swallowed.
The return value of doWork() is ignored, and cannot be retrieved.
Usage:
async function foo(someItem) {
console.log('work done on ' + someItem)
return
}
const w = writableQueue({doWork: foo, limitConcurrent: 2})
someSourceStream.pipe(w)