if you don't use `event.preventDefault()`, then clicking the link will trigger the default action. In the link that you currently have, it maybe have no default action, but a subsequent patch might add one (eg: to make it focussable), and I don't want side effects because of this.

The default action of a link is to follow its href. Which, in your app, basically means reloading the app :)

So just call `event.preventDefault()`, this will also prevent side effects :)