Bug: invalid number can set `undefined` as a `type`

[Hakier]

const {parsePhoneNumber} = require('awesome-phonenumber'); //v6.1.0
const parsed = parsePhoneNumber('7185555555');
expect(parsed.type).to.eql(undefined); // this passes but should not

type is not not optional

interface ParsedPhoneNumberFull {
...
type: PhoneNumberTypes;
}

and it is not specifying undefined

export type PhoneNumberTypes =
    | 'fixed-line'
    | 'fixed-line-or-mobile'
    | 'mobile'
    | 'pager'
    | 'personal-number'
    | 'premium-rate'
    | 'shared-cost'
    | 'toll-free'
    | 'uan'
    | 'voip'
    | 'unknown';

[grantila]

This is fixed in newer versions, it should default to unknown for invalid phone numbers.