IP Address regex will not work

[marchias]

I am attempting to use the following for IP Address masking. It works fine in a normal javascript function but does not work with this library. Does IMask not support a valid regex such as this?

/^(?!.)((^|.)([1-9]?\d|1\d\d|2(5[0-5]|[0-4]\d))){4}$/

Javascript function that works fine.

function validateIPAddress(text) {
let regexPattern = /^(?!.)((^|.)([1-9]?\d|1\d\d|2(5[0-5]|[0-4]\d))){4}$/;
let testResult = regexPattern.test(text);
if (testResult == false) {
alert("Not a valid IP Address");
}

return testResult;

}

[uNmAnNeR]

hey! your regex have to support not only the final state but intermediate states like 123. or 123.21 etc as well.
there is not magic, regex is applied on every input change