Avg response time measurement

avg.js

async function getResponseTime() {
  const start = performance.now()
  await fetch('YOUR_URL_HERE')
    return performance.now()-start
}

async function main() {
  const times = []
  for (let i = 0; i < 100; i++) {
    console.clear()
    console.log(`Call api ${i}`);
    await new Promise((res) => {
      setTimeout(res, 500)
    })
    times.push(await getResponseTime())
  }
  console.table(times);
  console.log("Среднее время ответа ~", times.reduce((acc, time) => acc + time, 0)/times.length, 'ms');
}

main()