Issue with asYouType and invalid phone numbers about libphonenumber-js

[catamphetamine]

Not getting the behaviour you described.
On the demo page I can enter 1234+ and then 5 and it still retains the full number (except for the national prefix which is expected for the US)
https://catamphetamine.github.io/libphonenumber-js/

    <!-- United States -->
    <!-- Note the national prefix of US is the same as its country code, and when formatting phone
         numbers in the national format, it is not included. Therefore, we omit it here to make
         formatting consistent with the rest of the world. The same applies to all the
         countries/regions under NANPA -->

[mahyarr]

Seems like on the demo page, you're explicitly stripping out plus signs if they are not at the beginning of the value before passing it on to the asYouType. I guess I could use the same technique. Thanks for your quick response.

parse={(character, value) =>
{
  // Leading plus is allowed
  if (character === '+')
  {
    if (!value)
    {
      return character
    }
  }

  // Digits are allowed
  return parseDigit(character)
}}

[catamphetamine]

It's not about the demo page.
Until you provide a test case illustrating the issue there's no proof that such an issue exists.
https://github.com/catamphetamine/libphonenumber-js/blob/master/test/as%20you%20type.js