Node.js readline in a synchronized way? Or an asynchronous loop?

I'm teaching programming to a kid using javascript / node.js and we were going to make a number guessing game. But I found that readline module only supports async, this means that the game logic can't be:

while(true){
   guess=input(); // I seem to need block here
   ans=checkGuess(guess);
   displayAns(ans);
   if(ans==0)break;
}

Instead, I see that instead of a simple loop, I will need to call input in displayAns which is called by checkGuess, which is called by input - and that is definitely a ugly mess. I don't think I should be teaching the kid CPS just to solve this easy problem.

Is there a simple and easy way for a kid to make this game in node.js? Or am I using the wrong language (maybe BASIC instead?)