How to find the valid phone number length given a Country and PhoneType, using libphonenumber-js

Question

I'm using the libphonenumber-js library from CDN jsdelivr

https://cdn.jsdelivr.net/npm/libphonenumber-js/bundle/libphonenumber-js.min.js

Given I have a valid CountryCode (eg AU) and a PhoneType of mobile or fixed line, is there some way I can find the numeric length of a valid phone number for that type and country?