Re: [w3ctag/design-reviews] Gamepad API input events (#662)

@kenchris it's not entirely clear to me what is being asked, but event listener registration is supposed to be side effect free, apart from performance optimization. See https://dom.spec.whatwg.org/#observing-event-listeners in particular:

> In general, developers do not expect the presence of an event listener to be observable. The impact of an event listener is determined by its callback. That is, a developer adding a no-op event listener would not expect it to have any side effects.

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Received on Tuesday, 28 September 2021 14:28:29 UTC