code: function updateStatus() {
      if (options.log === false || !process.stderr.cursorTo) return;
  
      var s = Math.floor((Date.now() - start) / 1000);
      var h = Math.floor(s / 3600);
      var m = Math.floor((s - h * 3600) / 60);
      var time = (h ? h + 'h ' : '') + (h || m ? m + 'm ' : '') + (s % 60) + 's';
  
      process.stderr.cursorTo(0);
      process.stderr.write(tilesDone + ' tiles processed in ' + time);
      process.stderr.clearLine(1);
    }
docs: /* istanbul ignore next