Get the difference in date with the current date using the Moment.js library

getDateDifferenceWithCurrentDateByUsingMomentJs.js

const someDate = "2018-05-21";
const differenceWithCurrentDate = getDateDifferenceWithCurrentDate( someDate );

// if today "2018-07-21" ( for example )
// differenceWithCurrentDate = {
//   type: 'months',
//   count: 2
// }


function getDateDifferenceWithCurrentDate(date) {

  let difference = {
    type: false,
    count: false
  };

  const now = moment(new Date());
  date = moment(date);
  const duration = moment.duration(now.diff(date));

  const years = Math.floor( duration.asYears() );
  const months = Math.floor( duration.asMonths() );

  if( years ) {

    difference = {
      type: 'years',
      count: years
    }
    
    return difference;
    
  }

  difference = {
    type: 'months',
    count: months
  };
  
  return difference;
  
}