test(svelte-query/useMutationState): add type tests for default 'MutationState' and 'select' inference by sukvvon · Pull Request #10504 · TanStack/query

sukvvon · 2026-04-15T08:22:33Z

🎯 Changes

Add type tests for useMutationState in svelte-query, covering:

Default return type (Array<MutationState>) when no select is provided
TResult inference from select callback

✅ Checklist

I have followed the steps in the Contributing guide.
I have tested this code locally with pnpm run test:pr.

🚀 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

Tests
- Added type declaration tests for useMutationState to ensure proper TypeScript type inference with and without filter options and select functions.

…tionState' and 'select' inference

coderabbitai · 2026-04-15T08:22:47Z

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: f4a5f9b4-7760-43d8-92b0-091db257db1c

📥 Commits

Reviewing files that changed from the base of the PR and between da62c8a and 2d0f1c4.

📒 Files selected for processing (1)

packages/svelte-query/tests/useMutationState/useMutationState.test-d.ts

📝 Walkthrough

Walkthrough

Added a TypeScript declaration test file for the useMutationState hook in the svelte-query package. The test validates generic type inference for the hook's return type with and without the optional select parameter using type-level assertions.

Changes

Cohort / File(s)	Summary
TypeScript Type Tests `packages/svelte-query/tests/useMutationState/useMutationState.test-d.ts`	Added type-level declaration tests for `useMutationState` validating generic type inference. Includes assertions for return types with filters only and with select functions.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 Types now dance in svelte's domain,
MutationState tests, crystal clear and plain,
Select functions shape the generic flow,
A rabbit's quest for type-safety glow! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: adding type tests for useMutationState in svelte-query covering default return type and select inference.
Description check	✅ Passed	The description follows the template with all required sections completed: Changes section clearly describes what was added, Checklist items are properly marked, and Release Impact correctly indicates this is dev-only with no changeset needed.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

📝 Generate docstrings

Create stacked PR
Commit on current branch

🧪 Generate unit tests (beta)

Create PR with unit tests
Commit unit tests in branch test/svelte-query-useMutationState-type-tests

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nx-cloud · 2026-04-15T08:23:00Z

View your CI Pipeline Execution ↗ for commit 2d0f1c4

Command	Status	Duration	Result
`nx affected --targets=test:sherif,test:knip,tes...`	✅ Succeeded	36s	View ↗
`nx run-many --target=build --exclude=examples/*...`	✅ Succeeded	<1s	View ↗

☁️ Nx Cloud last updated this comment at 2026-04-15 08:24:16 UTC

github-actions · 2026-04-15T08:23:21Z

🚀 Changeset Version Preview

No changeset entries found. Merging this PR will not cause a version bump for any packages.

pkg-pr-new · 2026-04-15T08:24:04Z

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commit: 2d0f1c4

github-actions · 2026-04-15T08:24:13Z

size-limit report 📦

Path	Size
react full	11.99 KB (0%)
react minimal	9.02 KB (0%)

test(svelte-query/useMutationState): add type tests for default 'Muta…

2d0f1c4

…tionState' and 'select' inference

github-actions bot added the package: svelte-query label Apr 15, 2026

sukvvon merged commit c47c671 into main Apr 15, 2026
10 checks passed

sukvvon deleted the test/svelte-query-useMutationState-type-tests branch April 15, 2026 08:39

sukvvon self-assigned this Apr 15, 2026

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test(svelte-query/useMutationState): add type tests for default 'MutationState' and 'select' inference#10504

test(svelte-query/useMutationState): add type tests for default 'MutationState' and 'select' inference#10504
sukvvon merged 1 commit intomainfrom
test/svelte-query-useMutationState-type-tests

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