fix(query-core): stop leaking silent CancelledError when a fetch is removed/reset - #11342
fix(query-core): stop leaking silent CancelledError when a fetch is removed/reset#11342koreahghg wants to merge 2 commits into
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…emoved/reset Query.fetch() assumed a silent cancellation always meant a replacement fetch was starting and piggybacked on `this.#retryer.promise`. That's true for cancelRefetch, but removeQueries/resetQueries/clear() cancel silently via destroy() without starting a new fetch, so the same already-rejected retryer was returned, leaking a raw internal CancelledError to callers of fetchQuery/query()/ensureQueryData and to suspense/throwOnError consumers. Now it only piggybacks when a new retryer was actually assigned, otherwise falls back to existing data like the sibling `revert` branch already does.
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ChangesSilent cancellation handling
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to The change prevents removed or reset queries from exposing an internal cancellation error while preserving replacement-fetch behavior; no actionable merge-blocking risk remains beyond normal checks and review. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In `@packages/query-core/src/query.ts`:
- Around line 596-597: Update the cancelled-fetch handling in Query.fetch to
fall back to the pre-fetch state’s data when the current state has no data,
preserving cached data across a silent Query.reset. Add a resetQueries
regression test covering cached data with no initialData and verify the
cancelled fetch resolves with the last known data.
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.changeset/silent-cancels-leak.mdpackages/query-core/src/__tests__/query.test.tsxpackages/query-core/src/query.ts
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Query.reset() calls destroy() (silent cancel) and then immediately overwrites this.state with the query's initial state, before the in-flight fetch's catch block runs. The earlier fallback to this.state.data alone therefore missed this case, since by then the cached data had already been wiped and there was no initialData to recover it from, so it still threw the raw CancelledError. Fall back to this.#revertState.data (the state captured right before this fetch started) when this.state.data is undefined, since reset() doesn't touch that private field.
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🎯 Changes
Query.fetch()'s silent-cancellation handling assumed that whenever a fetch is cancelled with{ silent: true }, a replacement fetch is always about to start, so it piggybacks onthis.#retryer.promiseto get that replacement's result.That assumption holds for the
cancelRefetchpath (a new retryer is created right after the cancel), butQuery.destroy()also cancels silently (this.cancel({ silent: true })), and it is called byremoveQueries,resetQueries, andclear()— none of which start a replacement fetch. In that casethis.#retryerstill points at the very same, already-rejected retryer, sofetch()ends up rejecting with the raw internalCancelledErrorinstead of behaving like a normal cancellation. This surfaces directly throughfetchQuery/query()/ensureQueryDataand throughsuspense/throwOnErrorconsumers if a concurrentremoveQueries/resetQueries/clear()call races an in-flight fetch.The fix only piggybacks on
this.#retryer.promisewhen a different retryer was actually assigned (i.e. a replacement fetch really started). Otherwise it falls back to the existing data — mirroring what the neighboringrevertbranch already does — or rethrows if there's no data to fall back on.Added two regression tests in
query.test.tsxcovering both cases (existing data vs. no data yet), and verified against the pre-fix code that the first test fails with the rawCancelledErroras described above.✅ Checklist
pnpm run test:pr, or these tests do not apply to this pull request.🚀 Release Impact
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