# Referrer Object

* `url` string - HTTP Referrer URL.
* `policy` string - Can be `default`, `unsafe-url`,
  `no-referrer-when-downgrade`, `no-referrer`, `origin`,
  `strict-origin-when-cross-origin`, `same-origin` or `strict-origin`.
  See the [Referrer-Policy spec][1] for more details on the
  meaning of these values.

[1]: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referrer-Policy