Yamagishi Kazutoshi

Now does not yet support [the timeout attribute](https://xhr.spec.whatwg.org/#the-timeout-attribute). How to implement?

- https://dom.spec.whatwg.org/#dom-eventtarget-addeventlistener

Now does not yet support [the FormData interface](https://xhr.spec.whatwg.org/#interface-formdata).

This issue is a **Feature request**. ### Summary - https://yardoc.org/ - http://www.rubydoc.info/gems/ruboty-discord

This issue is a **Feature request**. ### Summary T/O