react-dates/esm/utils/toISODateString.js

A responsive and accessible date range picker component built with React

import moment from 'moment';
import toMomentObject from './toMomentObject';
export default function toISODateString(date, currentFormat) {
  var dateObj = moment.isMoment(date) ? date : toMomentObject(date, currentFormat);
  if (!dateObj) return null; // Template strings compiled in strict mode uses concat, which is slow. Since
  // this code is in a hot path and we want it to be as fast as possible, we
  // want to use old-fashioned +.
  // eslint-disable-next-line prefer-template

  return dateObj.year() + '-' + String(dateObj.month() + 1).padStart(2, '0') + '-' + String(dateObj.date()).padStart(2, '0');
}