`updateLocation` can script crash when creating a `new URL()`

[Jason McPeak]

Please see the diff here, at line 50:

4d7a089?diff=split#diff-2b69e8addd21fff5dab3f789e51a2582b63e95e28e393f7319e887d29de174e7

Previously href was calculated this way:
const href = parseUrl(location.href || '').url + search;

Now it is this:

let href: string;
  if (location.href) {
    const url = new URL(location.href);
    href = `${url.origin}${url.pathname}${search}`;
  } else {
    href = search;
  }

If you call the updateLocation with no href, it will set href to be the search value.
Now if you call updateLocation again, reusing the same location object that was returned, href will be the search value.
This causes an exception at this line:
const url = new URL(location.href);
because URL requires a valid URL - "If the given base URL or the resulting URL are not valid URLs, the JavaScript TypeError exception is thrown." see https://developer.mozilla.org/en-US/docs/Web/API/URL/URL

[Jason McPeak]

PR created - #245