Pauseable Timer

export default class Timer {
  constructor(callback, delay) {
    this.callback = callback;
    this.remaining = delay;
    this.start();
  }

  stop() {
    this.timerId = clearTimeout(this.timerId);
    this.remaining -= new Date() - this.startTime;

    return this;
  }

  start() {
    this.startTime = new Date();
    clearTimeout(this.timerId);
    this.timerId = setTimeout(this.callback, this.remaining);

    return this;
  }

  reset() {

  }

  clear() {

  }
}