Location class needs a toJSON method for proper serialization

[edclement]

In a standard browser, you can call JSON.stringify(window.location); This fails in zombie with a circular json reference.

class Location {

  constructor(history, url) {
    this._history = history;
    this._url = url || (history.current ? history.current.url : 'about:blank');
  }
...
}

I believe this occurs because the history class is attached to the location object and the history class actually attaches the browser object as a member as well.

here is the code:

toJSON() {
    return {
      hostname: this.hostname,
      href: this.href,
      origin: this.origin,
      hash: this.hash,
      host: this.host,
      pathname: this.pathname,
      port: this.port,
      protocol: this.protocol,
      search: this.search
    }
  }