v0ltoz/react-datetimepicker

import moment from 'moment';

export const createYears = (userDefinedYears, descendingYears) => {
  let years = [];
  if (!userDefinedYears) {
    //Range from 1900 to 25 years into the future
    let past = moment('19000101', 'YYYYMMDD');
    let yearsToGetFuture = 10;
    let endYear = moment()
      .add(yearsToGetFuture, 'years')
      .get('year');
    let addedCurrentYear = false;
    while (!addedCurrentYear) {
      if (past.get('years') === endYear) {
        addedCurrentYear = true;
      }
      years.push(past.year());
      past.add(1, 'years');
    }
  } else {
    let start = userDefinedYears[0];
    let end = userDefinedYears[1];
    for (let i = start; i <= end; i++) {
      years.push(i);
    }
  }
  return sortYears(years, descendingYears);
};

const sortYears = (years, descendingYears) => {
  // Decides whether to order dates in ascending or descending order
  if (descendingYears) {
    return years.reverse();
  }
  return years;
};