fix(server): clearCookies({name}) should not transiently delete other cookies#40955
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… cookies BrowserContext.clearCookies(options) currently wipes every cookie via doClearCookies() and then re-adds the ones that did not match the filter. Pages that subscribe to cookieStore.change observe a transient deletion of the kept cookies during the gap between the wipe and the readd, which is enough to trip route-guards, useSyncExternalStore-style auth state machines, and similar. When a filter (name, domain, or path) is set, expire only the matching cookies in place by calling addCookies with expires=0; the no-filter path still delegates to doClearCookies() as before. No per-browser code is changed. Reported and diagnosed by @jasikpark in microsoft#40953.
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Fixes #40953.
BrowserContext.clearCookies(options)currently wipes every cookie viadoClearCookies()and then re-adds the ones that did not match the filter. Pages that subscribe to thecookieStore.changeAPI observe a transient deletion of the kept cookies during the gap between the wipe and the readd, which is enough to trip route-guards,useSyncExternalStore-style auth state machines, and similar listeners. WithcookieStorenow Baseline 2025, this race window is observable from user code.When a filter (
name,domain, orpath) is set, this PR expires only the matching cookies in place by callingaddCookieswithexpires: 0; the no-filter path still delegates todoClearCookies()as before, so no per-browser code is touched.Credit to @jasikpark for the full root-cause analysis and the proposed fix shape in the issue.
Added a Chromium-only test in
tests/library/browsercontext-clearcookies.spec.tsthat adds two cookies, subscribes tocookieStore.changevia the page, then callsclearCookies({ name: 'delete_me' })and asserts the kept cookie never appears in a deletion event.