Function isPhoneNumberValid

auth/phone-invisible.ts:167–171

* Returns true if the phone number is valid.

()

 * Returns true if the phone number is valid.
 */
function isPhoneNumberValid() {
  const pattern = /^\+[0-9\s\-\(\)]+$/;
  const phoneNumber = getPhoneNumberFromUserInput();
  return phoneNumber.search(pattern) !== -1;
}

/**
 * Re-initializes the ReCaptacha widget.