[w3c/ServiceWorker] Fix less fragile |fetchController| termination check (PR #1779)

This is a follow up of https://github.com/w3c/ServiceWorker/pull/1777#discussion_r2141544666.
https://infra.spec.whatwg.org/#abort-when adds the check each time the step is executed.  However, there is only a step between and the abort-when and if-aborted, it should be less effective abort than we expect.  Let me steps to avoid that.


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You can view, comment on, or merge this pull request online at:

  https://github.com/w3c/ServiceWorker/pull/1779

-- Commit Summary --

  * More easy to abort

-- File Changes --

    M docs/index.bs (4)

-- Patch Links --

https://github.com/w3c/ServiceWorker/pull/1779.patch
https://github.com/w3c/ServiceWorker/pull/1779.diff

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Received on Thursday, 12 June 2025 08:03:07 UTC