class Timer {
  #ticks = 0;
  tick = () => {
    this.#ticks++;
    return this.#ticks;
  };
  reset() {
    this.#ticks = 0;
    return this.#ticks;
  }
}

const t = new Timer();
const { tick, reset } = t;
let result;
try {
  result = reset();
} catch (e) {
  result = e.constructor.name;
}
console.log(tick(), tick(), result);