How to use the fullcalendar.datepickerLocale function in fullcalendar

import 'moment/locale/nl-be';
import * as FullCalendar from 'fullcalendar';


/* Dutch (Belgium) initialisation for the jQuery UI date picker plugin. */
/* David De Sloovere @DavidDeSloovere */
FullCalendar.datepickerLocale('nl-be', 'nl-BE', {
  closeText: "Sluiten",
  prevText: "←",
  nextText: "→",
  currentText: "Vandaag",
  monthNames: [ "januari", "februari", "maart", "april", "mei", "juni",
  "juli", "augustus", "september", "oktober", "november", "december" ],
  monthNamesShort: [ "jan", "feb", "mrt", "apr", "mei", "jun",
  "jul", "aug", "sep", "okt", "nov", "dec" ],
  dayNames: [ "zondag", "maandag", "dinsdag", "woensdag", "donderdag", "vrijdag", "zaterdag" ],
  dayNamesShort: [ "zon", "maa", "din", "woe", "don", "vri", "zat" ],
  dayNamesMin: [ "zo", "ma", "di", "wo", "do", "vr", "za" ],
  weekHeader: "Wk",
  dateFormat: "dd/mm/yy",
  firstDay: 1,
  isRTL: false,
  showMonthAfterYear: false,

import 'moment/locale/de-ch';
import * as FullCalendar from 'fullcalendar';


/* German initialisation for the jQuery UI date picker plugin. */
/* Written by Milian Wolff (mail@milianw.de). */
FullCalendar.datepickerLocale('de-ch', 'de', {
  closeText: "Schließen",
  prevText: "<Zurück",
  nextText: "Vor>",
  currentText: "Heute",
  monthNames: [ "Januar","Februar","März","April","Mai","Juni",
  "Juli","August","September","Oktober","November","Dezember" ],
  monthNamesShort: [ "Jan","Feb","Mär","Apr","Mai","Jun",
  "Jul","Aug","Sep","Okt","Nov","Dez" ],
  dayNames: [ "Sonntag","Montag","Dienstag","Mittwoch","Donnerstag","Freitag","Samstag" ],
  dayNamesShort: [ "So","Mo","Di","Mi","Do","Fr","Sa" ],
  dayNamesMin: [ "So","Mo","Di","Mi","Do","Fr","Sa" ],
  weekHeader: "KW",
  dateFormat: "dd.mm.yy",
  firstDay: 1,
  isRTL: false,
  showMonthAfterYear: false,

import 'moment/locale/de-at';
import * as FullCalendar from 'fullcalendar';


/* German initialisation for the jQuery UI date picker plugin. */
/* Written by Milian Wolff (mail@milianw.de). */
FullCalendar.datepickerLocale('de-at', 'de', {
  closeText: "Schließen",
  prevText: "<Zurück",
  nextText: "Vor>",
  currentText: "Heute",
  monthNames: [ "Januar","Februar","März","April","Mai","Juni",
  "Juli","August","September","Oktober","November","Dezember" ],
  monthNamesShort: [ "Jan","Feb","Mär","Apr","Mai","Jun",
  "Jul","Aug","Sep","Okt","Nov","Dez" ],
  dayNames: [ "Sonntag","Montag","Dienstag","Mittwoch","Donnerstag","Freitag","Samstag" ],
  dayNamesShort: [ "So","Mo","Di","Mi","Do","Fr","Sa" ],
  dayNamesMin: [ "So","Mo","Di","Mi","Do","Fr","Sa" ],
  weekHeader: "KW",
  dateFormat: "dd.mm.yy",
  firstDay: 1,
  isRTL: false,
  showMonthAfterYear: false,

import 'moment/locale/ms-my';
import * as FullCalendar from 'fullcalendar';


/* Malaysian initialisation for the jQuery UI date picker plugin. */
/* Written by Mohd Nawawi Mohamad Jamili (nawawi@ronggeng.net). */
FullCalendar.datepickerLocale('ms-my', 'ms', {
  closeText: "Tutup",
  prevText: "<Sebelum",
  nextText: "Selepas>",
  currentText: "hari ini",
  monthNames: [ "Januari","Februari","Mac","April","Mei","Jun",
  "Julai","Ogos","September","Oktober","November","Disember" ],
  monthNamesShort: [ "Jan","Feb","Mac","Apr","Mei","Jun",
  "Jul","Ogo","Sep","Okt","Nov","Dis" ],
  dayNames: [ "Ahad","Isnin","Selasa","Rabu","Khamis","Jumaat","Sabtu" ],
  dayNamesShort: [ "Aha","Isn","Sel","Rab","kha","Jum","Sab" ],
  dayNamesMin: [ "Ah","Is","Se","Ra","Kh","Ju","Sa" ],
  weekHeader: "Mg",
  dateFormat: "dd/mm/yy",
  firstDay: 0,
  isRTL: false,
  showMonthAfterYear: false,

import 'moment/locale/es-do';
import * as FullCalendar from 'fullcalendar';


/* Inicialización en español para la extensión 'UI date picker' para jQuery. */
/* Traducido por Vester (xvester@gmail.com). */
FullCalendar.datepickerLocale('es-do', 'es', {
  closeText: "Cerrar",
  prevText: "<Ant",
  nextText: "Sig>",
  currentText: "Hoy",
  monthNames: [ "enero","febrero","marzo","abril","mayo","junio",
  "julio","agosto","septiembre","octubre","noviembre","diciembre" ],
  monthNamesShort: [ "ene","feb","mar","abr","may","jun",
  "jul","ago","sep","oct","nov","dic" ],
  dayNames: [ "domingo","lunes","martes","miércoles","jueves","viernes","sábado" ],
  dayNamesShort: [ "dom","lun","mar","mié","jue","vie","sáb" ],
  dayNamesMin: [ "D","L","M","X","J","V","S" ],
  weekHeader: "Sm",
  dateFormat: "dd/mm/yy",
  firstDay: 1,
  isRTL: false,
  showMonthAfterYear: false,

import 'moment/locale/be';
import * as FullCalendar from 'fullcalendar';


/* Belarusian (UTF-8) initialisation for the jQuery UI date picker plugin. */
/* Written by All Fill  */
FullCalendar.datepickerLocale('be', 'be', {
  closeText: "Зачыніць",
  prevText: "<Папярэд",
  nextText: "След>",
  currentText: "Сёння",
  monthNames: ["Студзень", "Люты", "Сакавік", "Красавік", "Трав", "Чэрвень", "Ліпень", "Жнівень", "Верасень", "Кастрычнік", "Лістапад", "Снежань"],
  monthNamesShort: ["Студ", "Лют", "Сак", "Крас", "Трав", "Чэрв", "Ліп", "Жнів", "Вер", "Каст", "Ліст", "Снеж"],
  dayNames: ["нядзеля", "панядзелак", "аўторак", "серада", "чацвер", "пятніца", "субота"],
  dayNamesShort: ["ндз", "пнд", "аўт", "срд", "чцв", "птн", "сбт"],
  dayNamesMin: ["Нд","Пн","Ат","Ср","Чц","Пт","Сб"],
  weekHeader: "Ндз",
  dateFormat: "dd.mm.yy",
  firstDay: 1,
  isRTL: false,
  showMonthAfterYear: false,
  yearSuffix: "" });