npm install moment-jalaali

const moment = require('moment-jalaali');
moment().format('jYYYY/jM/jD');

const moment = require('moment-jalaali');
 
// Parse a Jalaali date
const m = moment('1360/5/26', 'jYYYY/jM/jD')
 
// 1360/5/26 is 1981/8/17
console.log(m.format('jYYYY/jM/jD [is] YYYY/M/D'))

1360/5/26 is 1981/8/17

const moment = require('moment-jalaali');
 
// This returns true as it is leap year
console.log(moment('1391/12/30', 'jYYYY/jMM/jDD').isValid())
 
// This returns false as it is common year
console.log(moment('1392/12/30', 'jYYYY/jMM/jDD').isValid())

true 
false

const moment = require('moment-jalaali');
 
// 2013-8-25 16:40:00
console.log(moment('1392/6/3 16:40', 'jYYYY/jM/jD HH:mm')
    .format('YYYY-M-D HH:mm:ss'))
 
// 1392/6/31 23:59:59
console.log(moment('2013-8-25 16:40:00', 'YYYY-M-D HH:mm:ss')
    .endOf('jMonth').format('jYYYY/jM/jD HH:mm:ss'))

2013-8-25 16:40:00
1392/6/31 23:59:59

const moment = require('moment-jalaali');
 
// Represents 1981/07/17
console.log(moment('1981 5 17', 'YYYY jM D').format('YYYY/MM/DD'))

1981/07/17