question-and-answer.ts

import { createInterface } from "readline"
import { promisify } from "util"

const rl = createInterface({
  input: process.stdin,
  output: process.stdout
})

const question = promisify<string, string>(rl.question as (answer: string) => Promise<string>).bind(rl)

async function questionAndAnswer() {
  // Wait to receive data on the input stream.
  let answer = ""
  while (answer !== "y" && answer !== "n") {
    answer = (await question('(Y/N)? '))
    if (answer.length) answer = answer[0].toLowerCase()
  }

  if (answer === "y") {
    //
  } else if (answer === "n") {
    //
  }

  rl.close()
}

questionAndAnswer()