fix(solid-db): support findOne in useLiveQuery by kevin-dp · Pull Request #1403 · TanStack/db

kevin-dp · 2026-03-24T13:52:04Z

Summary

useLiveQuery in @tanstack/solid-db did not support .findOne() — it always returned an array instead of a single object or undefined. This is the same bug previously fixed in react-db (#749), vue-db (#1134), and angular-db (#1261).

Update type overloads to use InferResultType<TContext> so findOne() queries return T | undefined instead of Array<T>
Add SingleResult/NonSingleResult overloads for pre-created collections passed via Accessor
Check config.singleResult at runtime to return the first element instead of the full array
Add runtime and type-level tests

Fixes #1399

Test plan

cd packages/solid-db && pnpm test — all 38 tests pass
4 new runtime tests: findOne with query builder, config object, pre-created collection, and empty result
3 new type tests: findOne returns T | undefined, non-findOne returns Array<T>, pre-created collection with findOne

🤖 Generated with Claude Code

Add runtime and type tests for findOne support in solid-db's useLiveQuery. These tests currently fail, reproducing #1399. Fixes #1399 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

pkg-pr-new · 2026-03-24T13:57:25Z

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commit: eebdc35

Update type overloads to use InferResultType<TContext> so findOne queries return T | undefined instead of Array<T>. Add SingleResult/NonSingleResult overloads for pre-created collections. Check config.singleResult at runtime to return the first element instead of the full array. Fixes #1399 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

github-actions · 2026-03-24T14:02:32Z

Size Change: 0 B

Total Size: 111 kB

ℹ️ View Unchanged

Filename	Size
`./packages/db/dist/esm/collection/change-events.js`	1.39 kB
`./packages/db/dist/esm/collection/changes.js`	1.38 kB
`./packages/db/dist/esm/collection/cleanup-queue.js`	810 B
`./packages/db/dist/esm/collection/events.js`	434 B
`./packages/db/dist/esm/collection/index.js`	3.7 kB
`./packages/db/dist/esm/collection/indexes.js`	2.35 kB
`./packages/db/dist/esm/collection/lifecycle.js`	1.76 kB
`./packages/db/dist/esm/collection/mutations.js`	2.47 kB
`./packages/db/dist/esm/collection/state.js`	5.26 kB
`./packages/db/dist/esm/collection/subscription.js`	3.71 kB
`./packages/db/dist/esm/collection/sync.js`	2.88 kB
`./packages/db/dist/esm/collection/transaction-metadata.js`	144 B
`./packages/db/dist/esm/deferred.js`	207 B
`./packages/db/dist/esm/errors.js`	4.83 kB
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`./packages/db/dist/esm/index.js`	2.85 kB
`./packages/db/dist/esm/indexes/auto-index.js`	777 B
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`./packages/db/dist/esm/indexes/btree-index.js`	2.17 kB
`./packages/db/dist/esm/indexes/lazy-index.js`	1.24 kB
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`./packages/db/dist/esm/paced-mutations.js`	496 B
`./packages/db/dist/esm/proxy.js`	3.75 kB
`./packages/db/dist/esm/query/builder/functions.js`	792 B
`./packages/db/dist/esm/query/builder/index.js`	5.15 kB
`./packages/db/dist/esm/query/builder/ref-proxy.js`	1.05 kB
`./packages/db/dist/esm/query/compiler/evaluators.js`	1.62 kB
`./packages/db/dist/esm/query/compiler/expressions.js`	430 B
`./packages/db/dist/esm/query/compiler/group-by.js`	2.69 kB
`./packages/db/dist/esm/query/compiler/index.js`	3.62 kB
`./packages/db/dist/esm/query/compiler/joins.js`	2.11 kB
`./packages/db/dist/esm/query/compiler/order-by.js`	1.52 kB
`./packages/db/dist/esm/query/compiler/select.js`	1.11 kB
`./packages/db/dist/esm/query/effect.js`	4.78 kB
`./packages/db/dist/esm/query/expression-helpers.js`	1.43 kB
`./packages/db/dist/esm/query/ir.js`	784 B
`./packages/db/dist/esm/query/live-query-collection.js`	360 B
`./packages/db/dist/esm/query/live/collection-config-builder.js`	7.63 kB
`./packages/db/dist/esm/query/live/collection-registry.js`	264 B
`./packages/db/dist/esm/query/live/collection-subscriber.js`	1.94 kB
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`./packages/db/dist/esm/query/live/utils.js`	1.57 kB
`./packages/db/dist/esm/query/optimizer.js`	2.62 kB
`./packages/db/dist/esm/query/predicate-utils.js`	2.97 kB
`./packages/db/dist/esm/query/query-once.js`	359 B
`./packages/db/dist/esm/query/subset-dedupe.js`	960 B
`./packages/db/dist/esm/scheduler.js`	1.3 kB
`./packages/db/dist/esm/SortedMap.js`	1.3 kB
`./packages/db/dist/esm/strategies/debounceStrategy.js`	247 B
`./packages/db/dist/esm/strategies/queueStrategy.js`	428 B
`./packages/db/dist/esm/strategies/throttleStrategy.js`	246 B
`./packages/db/dist/esm/transactions.js`	2.9 kB
`./packages/db/dist/esm/utils.js`	927 B
`./packages/db/dist/esm/utils/browser-polyfills.js`	304 B
`./packages/db/dist/esm/utils/btree.js`	5.61 kB
`./packages/db/dist/esm/utils/comparison.js`	1.05 kB
`./packages/db/dist/esm/utils/cursor.js`	457 B
`./packages/db/dist/esm/utils/index-optimization.js`	1.54 kB
`./packages/db/dist/esm/utils/type-guards.js`	157 B
`./packages/db/dist/esm/virtual-props.js`	360 B

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github-actions · 2026-03-24T14:03:17Z

Size Change: 0 B

Total Size: 4.23 kB

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Filename	Size
`./packages/react-db/dist/esm/index.js`	249 B
`./packages/react-db/dist/esm/useLiveInfiniteQuery.js`	1.32 kB
`./packages/react-db/dist/esm/useLiveQuery.js`	1.34 kB
`./packages/react-db/dist/esm/useLiveQueryEffect.js`	355 B
`./packages/react-db/dist/esm/useLiveSuspenseQuery.js`	559 B
`./packages/react-db/dist/esm/usePacedMutations.js`	401 B

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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

samwillis

kevin-dp and others added 2 commits March 24, 2026 14:51

test(solid-db): add findOne tests for useLiveQuery

2366032

Add runtime and type tests for findOne support in solid-db's useLiveQuery. These tests currently fail, reproducing #1399. Fixes #1399 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ci: apply automated fixes

671db9e

chore: add changeset for solid-db findOne fix

eebdc35

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

kevin-dp changed the title ~~test(solid-db): add failing findOne tests for useLiveQuery~~ fix(solid-db): support findOne in useLiveQuery Mar 24, 2026

samwillis approved these changes Mar 24, 2026

View reviewed changes

samwillis merged commit 7626097 into main Mar 24, 2026
7 checks passed

samwillis deleted the find-one-solid-db branch March 24, 2026 18:37

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fix(solid-db): support findOne in useLiveQuery#1403

fix(solid-db): support findOne in useLiveQuery#1403
samwillis merged 4 commits intomainfrom
find-one-solid-db

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