refactor(lit-query): add the 'override' modifier to the implementations of the abstract controller hooks and document the hooks by sukvvon · Pull Request #11913 · TanStack/query

sukvvon · 2026-10-04T19:03:31Z

🎯 Changes

Adds the TypeScript override modifier to the controller methods that implement the abstract hooks of BaseController: onConnected, onDisconnected, onHostUpdate, and onQueryClientChanged. These are in QueryController, InfiniteQueryController, QueriesController, MutationController, IsFetchingController, IsMutatingController, and MutationStateController.

noImplicitOverride doesn't require override on implementations of abstract members, so these were left out before. With this change, every member that overrides or implements a base class member is marked override, like the optionalRemove implementations in query-core.

The abstract hooks in BaseController also get a JSDoc description of when each one is called and what the subclasses do in it.

The built JS and the type declarations are unchanged. BaseController isn't part of the public types, so the new comments don't appear there.

✅ Checklist

I have followed the steps in the Contributing guide.
I have tested code changes locally with pnpm run test:pr, or these tests do not apply to this pull request.
I have followed the AI contribution policy and fully understand the code in this pull request, including any code generated with AI assistance.

🚀 Release Impact

This change affects published code, and I have generated a changeset.
This change is docs/CI/dev-only (no release).

Summary by CodeRabbit

Documentation
- Documented when controller lifecycle hooks run: after subclass fields initialize, when the host disconnects or is destroyed, and before host updates.
- Clarified that query-client change notifications run in a microtask when the client changes or client resolution completes without finding one.
- Lifecycle behavior remains unchanged; these updates clarify timing for developers working with the controllers.

…ns of the abstract controller hooks

changeset-bot · 2026-10-04T19:03:36Z

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Latest commit: 5d76de6

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nx-cloud · 2026-10-04T19:04:01Z

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github-actions · 2026-10-04T19:04:24Z

🚀 Changeset Version Preview

1 package(s) bumped directly, 24 bumped as dependents.

🟩 Patch bumps

Package	Version	Reason
`@tanstack/query-core`	5.104.1 → 5.104.2	Changeset
`@tanstack/angular-query-experimental`	5.104.1 → 5.104.2	Dependent
`@tanstack/angular-query-persist-client`	5.104.1 → 5.104.2	Dependent
`@tanstack/eslint-plugin-query`	5.104.1 → 5.104.2	Dependent
`@tanstack/lit-query`	0.2.26 → 0.2.27	Dependent
`@tanstack/preact-query`	5.104.1 → 5.104.2	Dependent
`@tanstack/preact-query-devtools`	5.104.1 → 5.104.2	Dependent
`@tanstack/preact-query-persist-client`	5.104.1 → 5.104.2	Dependent
`@tanstack/query-async-storage-persister`	5.104.1 → 5.104.2	Dependent
`@tanstack/query-broadcast-client-experimental`	5.104.1 → 5.104.2	Dependent
`@tanstack/query-devtools`	5.104.1 → 5.104.2	Dependent
`@tanstack/query-persist-client-core`	5.104.1 → 5.104.2	Dependent
`@tanstack/query-sync-storage-persister`	5.104.1 → 5.104.2	Dependent
`@tanstack/react-query`	5.104.1 → 5.104.2	Dependent
`@tanstack/react-query-devtools`	5.104.1 → 5.104.2	Dependent
`@tanstack/react-query-next-experimental`	5.104.1 → 5.104.2	Dependent
`@tanstack/react-query-persist-client`	5.104.1 → 5.104.2	Dependent
`@tanstack/solid-query`	5.104.1 → 5.104.2	Dependent
`@tanstack/solid-query-devtools`	5.104.1 → 5.104.2	Dependent
`@tanstack/solid-query-persist-client`	5.104.1 → 5.104.2	Dependent
`@tanstack/svelte-query`	6.3.1 → 6.3.2	Dependent
`@tanstack/svelte-query-devtools`	6.3.1 → 6.3.2	Dependent
`@tanstack/svelte-query-persist-client`	6.3.1 → 6.3.2	Dependent
`@tanstack/vue-query`	5.104.1 → 5.104.2	Dependent
`@tanstack/vue-query-devtools`	6.3.1 → 6.3.2	Dependent

pkg-pr-new · 2026-10-04T19:05:38Z

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@tanstack/angular-query-experimental

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@tanstack/eslint-plugin-query

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@tanstack/lit-query

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@tanstack/query-persist-client-core

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@tanstack/react-query

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@tanstack/react-query-next-experimental

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@tanstack/react-query-persist-client

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@tanstack/solid-query

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@tanstack/svelte-query

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commit: 5d76de6

github-actions · 2026-10-04T19:05:47Z

size-limit report 📦

Path	Size
react full	11.73 KB (0%)
react minimal	8.58 KB (0%)

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📒 Files selected for processing (1)

packages/lit-query/src/controllers/BaseController.ts

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packages/lit-query/src/controllers/BaseController.ts

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📝 Walkthrough

Walkthrough

The change documents when BaseController lifecycle hooks run, including the timing and condition for onQueryClientChanged. It also adds TypeScript’s override modifier to corresponding hooks in Lit Query controllers. Hook implementations and behavior remain unchanged.

Changes

Lit Query Lifecycle Hooks

Layer / File(s)	Summary
Document lifecycle hook contracts `packages/lit-query/src/controllers/BaseController.ts`	Documents lifecycle hook timing and the condition for `onQueryClientChanged`.
Mark subclass hooks as overrides `packages/lit-query/src/createInfiniteQueryController.ts`, `packages/lit-query/src/createMutationController.ts`, `packages/lit-query/src/createQueriesController.ts`, `packages/lit-query/src/createQueryController.ts`, `packages/lit-query/src/useIsFetching.ts`, `packages/lit-query/src/useIsMutating.ts`, `packages/lit-query/src/useMutationState.ts`	Adds the `override` modifier to existing lifecycle hook implementations. Their behavior is unchanged.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~4 minutes

Change: Refactor

Merge Risk: ⚪ Minimal · up to 5d76d

The lifecycle documentation reflects the current behavior, so this change is ready to merge after normal checks.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes both changes: adding `override` modifiers to the controller hooks and documenting the hooks. It is somewhat long, but it is specific and relevant.
Description check	✅ Passed	The description explains the changes and motivation, completes all required sections, and marks the release impact as docs/dev-only. It also reports that tests were run or did not apply.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 8…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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Inline comments:
Review comments at @packages/lit-query/src/controllers/BaseController.ts:
- Around line 352-353: Update the hook documentation associated with
queueInitialContextResolutionCompletion to describe changes in QueryClient
resolution state, including resolution to a missing client where
tryGetQueryClient() returns undefined; clarify that subclasses must not assume a
client is available.

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packages/lit-query/src/controllers/BaseController.ts
packages/lit-query/src/createInfiniteQueryController.ts
packages/lit-query/src/createMutationController.ts
packages/lit-query/src/createQueriesController.ts
packages/lit-query/src/createQueryController.ts
packages/lit-query/src/useIsFetching.ts
packages/lit-query/src/useIsMutating.ts
packages/lit-query/src/useMutationState.ts

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… runs when no client is found

…ut a client

refactor(lit-query): add the 'override' modifier to the implementatio…

089e12d

…ns of the abstract controller hooks

sukvvon self-assigned this Oct 4, 2026

sukvvon changed the title ~~refactor(lit-query): add the 'override' modifier to the implementations of the abstract controller hooks~~ refactor(lit-query): add the 'override' modifier to the implementations of the abstract controller hooks and document the hooks Oct 4, 2026

coderabbitai Bot reviewed Oct 4, 2026

View reviewed changes

Comment thread packages/lit-query/src/controllers/BaseController.ts Outdated

sukvvon added 2 commits October 5, 2026 04:31

docs(lit-query/BaseController): note that 'onQueryClientChanged' also…

21618ea

… runs when no client is found

docs(lit-query/BaseController): note that 'onConnected' may run witho…

5d76de6

…ut a client

sukvvon merged commit 271a4ed into main Oct 5, 2026
9 checks passed

sukvvon deleted the refactor/lit-query-override-abstract-implementations branch October 5, 2026 03:30

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refactor(lit-query): add the 'override' modifier to the implementations of the abstract controller hooks and document the hooks - #11913

refactor(lit-query): add the 'override' modifier to the implementations of the abstract controller hooks and document the hooks#11913
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