code example for readline module in node js

readline.js

const readline = require('readline');
const rl = readline.createInterface(process.stdin, process.stdout);
const realPerson = {
  name: "",
  sayings: []
};

rl.question("Who is real person? ", function(answer){
  realPerson.name = answer;
  rl.setPrompt(`What would ${realPerson.name} say? `);
  rl.prompt();
  rl.on('line', function(sayings){    
    realPerson.sayings.push(sayings.toLowerCase().trim());  
    if (sayings.toLowerCase().trim() === "exit") {
      rl.close();
    } else {
      rl.setPrompt(`what else ${realPerson.name} would say? (type "exit" to leave)`)
      rl.prompt();
    }
  });
});

rl.on('close', function(){
  console.log("%s is a real person who is sayings %j", realPerson.name, realPerson.sayings);
  process.exit();
});