unawait interval

setInterval_sample.js

const sleep = (ms) => {
  setTimeout(() => undefined, ms);
};

const intervalCount = (ms) => {
  let counter = 0;
  setInterval(() => {
      console.log("[Info] count: ", counter)
      counter++;
  }, ms);
}

const main = () => {
  const intervalMs = 3000;
  console.log("start!!");

  // 3秒毎にカウント
  intervalCount(3000);

  // 10カウントするまでwait
  sleep(intervalMs * 10);

  console.log("finish!!");
}

main();