Re: [whatwg/dom] Add AbortSignal.any() (PR #1152)

Interesting, thanks.

> e.g. if you have a long chain of 'signal following signal following signal, etc.' I think even with weak event listeners, we'd need to keep intermediate signals alive to get the order you want?

Yeah though I suspect very long chains with that sort of dependencies aren't common/practical anyway? Any chance you can provide an example? The motivating examples I've used in the past is "signal for server + signal for each request" in Node and "tree of components where cancellation propagates" in web components/browsers.

In what case is an action hierarchical but the intermediate steps go "out of scopes" before the last steps?

@annevk 
> You wouldn't want a userland-added event listener to be able to stop your listener from running, for instance.

As far as I'm aware there is no way to remove others' event listeners?


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