CODE EXAMPLE FOR JAVASCRIPT

reactjs libphonenumber

import {
  isPossiblePhoneNumber,
  isValidPhoneNumber,
  validatePhoneNumberLength
} from 'libphonenumber-js'

isPossiblePhoneNumber('8 (800) 555-35-35', 'RU') === true
isValidPhoneNumber('8 (800) 555-35-35', 'RU') === true

validatePhoneNumberLength('8 (800) 555', 'RU') === 'TOO_SHORT'
validatePhoneNumberLength('8 (800) 555-35-35', 'RU') === undefined