text: const Moment = require('moment');
  const MomentRange = require('moment-range');
  
  const moment = MomentRange.extendMoment(Moment);
  const timeInterval = '2004-04-01T12:00:00+09:00/2007-08-31T15:00:00+09:00'
  const range = moment.range(timeInterval);
  
  console.log(range.start);
  console.log(range.end);
  