I have an ASK v2, node.js lambda function that prompts and reprompts in the regular way with the prompt (.speak()) providing information and and eliciting the next utterance, followed by a couple of other example utterances (let's call them hints) in the reprompt, something like:

return responseBuilder
.speak('blah blah blah. What would you like next?')
.reprompt('You might say something like When do you open? ' +
'or How much are tickets?')
.getResponse()

I have a set of hints and try to speak them in a way that exposes the most useful first, followed by the not-quite-so-useful next, and so on.

At the moment, I can't tell whether the reprompt has "fired" and the hints have been spoken, or not. If a hint has been spoken, I can move on and queue up the next one. If not, I'll recycle it with the next reprompt. I could guess based on timing, but that's unreliable and difficult to manage. I've tried passing a callback

.reprompt(() => {
    // do some bookkeeping stuff and then
return 'You might say  something .... ';
}

which, I'll admit, was a long shot and didn't work at all. If I pass a function that returns a string, it's evaluated immediately and is of no use for bookkeeping purposes.

So, is there something I've missed that would let me know that the reprompt was spoken?

If not, I'd like to request adding an indicator to the subsequent response, possibly:

"context": {
    "AudioPlayer": {
        "playerActivity": "IDLE"
    },
"repromptSpoken" : true,  //  or, of course, false
    "System": {  etc etc etc 

Thanks!