function createCounters() {
  const counters = [];
  for (let i = 0; i < 3; i++) {
    let count = 0;
    counters.push(() => {
      count += i;
      return count;
    });
  }
  return counters;
}

const counters = createCounters();
const first = counters.map(fn => fn()).join(',');
const second = counters.map(fn => fn()).join(',');
console.log(first, second);