text: class Clock {
      constructor({ template }) {
          this.template = template;
      }
  
      render() {
          let date = new Date();
  
          let hours = date.getHours();
          if (hours < 10) hours = '0' + hours;
  
          let mins = date.getMinutes();
          if (mins < 10) mins = '0' + mins;
  
          let secs = date.getSeconds();
          if (secs < 10) secs = '0' + secs;
  
          let output = this.template.replace('h', hours).replace('m', mins).replace('s', secs);
  
          console.log(output);
      }
  
      stop() {
          clearInterval(this.timer);
      }
  
      start() {
          this.render();
          this.timer = setInterval(() => this.render(), 1000);
      }
  }
  
  let clock = new Clock({ template: 'h:m:s' });
  clock.start();
  