Valid anchor changed when href has port

[tmmiller6]

When running anchorme.default, if an anchor has an href with a port and the text for the anchor has the URL without the port, a new anchor is created inside the original anchor, but the port is not in the nested anchor.

See http://jsfiddle.net/tmmiller/cr4a6kqe/4/

document.getElementById("input").value = <div><a href="https://mywebsite.com:7743" target="_blank">https://mywebsite.com</a></div>;

function process() {
document.getElementById("output").value = anchorme({
input: document.getElementById("input").value,
options: {
attributes: function(string) {
const attributes = {
target: "_blank",
rel: 'noopener noreferrer nofollow'
};
return attributes;
}
},
});
}

process();

Expected result: The target and rel attributes added to the anchor

https://mywebsite.com

Actual result: Notice the new anchor created without the port

https://mywebsite.com