Tweet sized English number to Persian converter and vice versa.

util.js

/**
 * Tweet sized English number to Persian converter and vice versa.
 * You can find out old and obsolete version in here: https://gist.github.com/eAmin/786108
 * by Amin Akbari
 * MIT License
 */

/**
 * Convert English numbers to Persian
 * 
 * @param {string|number|array} val the Value need to convert
 * @returns {string}
 */
export function toPersianDigit(val) {
  return (val + '').replace(/[0-9]/g, digit => String.fromCharCode( digit.charCodeAt(0) + 1728 ));
}

/**
 * Convert Persian numbers to English
 * 
 * @param {string|number|array} val the Value need to convert
 * @returns {string}
 */
export function toEnglishDigit(val) {
  return (val + '').replace(/[\u06F0-\u06F9]/g, digit => String.fromCharCode( digit.charCodeAt(0) - 1728 ));
}