Phone number validation changes for Transactional API

Route: Transactional SMS endpoints

New phone number validations are added for the Transactional endpoints.

• if the number starts with 00 -> it replaces 00 with +

  • So numbers starting with 00 or + are same.

• if the number starts with + it does nothing

  • If a number starts with + it is checked directly using https://www.npmjs.com/package/libphonenumber-js without sanitizing the input.

• if the number starts with single 0 -> it removes leading zero

  • In this case the single 0 is removed and before passing to library https://www.npmjs.com/package/libphonenumber-js we add a prefix of + because the library expects the country code before the number.

• Any other string of digits are assumed to be a national number

  • In this case we add a prefix of + before checking the validity of number using https://www.npmjs.com/package/libphonenumber-js.