perf-marks example using profiler method

using-perf-marks.js

import { profiler } from 'perf-marks/profiler';

const marker = 'my-marker';

const someExpensiveMemoryAndTimeTask = () => 1 + 1;

// Just need to wrap your function with `profiler()` method and that's it!
// Easy peasy, lemon squeezy! 🍋
profiler(async () => {
  return new Promise((resolve) => {
    setTimeout(() => {
      setTimeout(() => {
        resolve(someExpensiveMemoryAndTimeTask());
      }, 1000);
    }, 2000);
  });
}, marker).then(result => console.log(result));