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[v2] Vue reactivity now works - #2401

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@crutchcorn

@crutchcorn crutchcorn commented Sep 22, 2026

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Fixes #2390

Summary by CodeRabbit

  • Bug Fixes

    • Improved Vue field reactivity in child components, including slot-based and injected fields.
    • Field values, validation state, and errors now update reliably without unnecessary remounts.
    • Field handlers remain connected after form resets and field name changes.
    • Array field validation updates now display correctly while asynchronous validation is pending.
  • Tests

    • Added browser-based coverage for field and array-field reactivity, validation, resets, and field switching.

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  • packages/preact-form/tsconfig.json

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📝 Walkthrough

Walkthrough

The pull request adds a reactive Vue field view, updates field subscriptions and injection types, and keeps field handlers connected after resets and name changes. Browser-based regression tests cover slot, injected, and array field consumers.

Changes

Vue field reactivity

Layer / File(s) Summary
Reactive field view
packages/vue-form/src/AppForm/contexts.lib.ts, packages/vue-form/src/VueForm/fieldSubscriptions.lib.ts, packages/vue-form/src/VueForm/fieldView.lib.ts, packages/vue-form/src/VueForm/useField.lib.ts
Field subscriptions now expose reactive metadata. createFieldView reads reactive value and metadata references and delegates handlers to the current core field.
Field component integration
packages/vue-form/src/VueForm/Components.lib.ts, .changeset/silent-tools-cry.md
Field components provide and return the reactive field view. Field contexts use the public AnyFieldApi type.
Browser regression coverage
packages/vue-form/tests/*, packages/vue-form/vitest.config.ts, packages/preact-form/tsconfig.json
Browser tests cover validation, reset, name changes, slot consumers, injected consumers, and array fields. Vitest uses Playwright browser mode, and the Preact compiler types include node.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Bug fix · Severity of issue fixed: Medium

Suggested reviewers: harry-whorlow

Merge Risk: ⚪ Minimal · up to e1871

This change improves Vue field reactivity across validation, reset, and name changes, with regression coverage described for slot and injected consumers. No current merge-blocking risk remains identified.

🚥 Pre-merge checks | ✅ 2 | ❌ 3

❌ Failed checks (3 warnings)

Check name Status Explanation Resolution
Description check ⚠️ Warning The description only links to issue #2390. It does not describe the changes, complete the checklist, or state the release impact required by the repository template. Add a Changes section that explains the Vue reactivity fixes and motivation. Complete the Checklist items. Complete the Release Impact section and confirm the changeset status.
Out of Scope Changes check ⚠️ Warning packages/preact-form/tsconfig.json adds the node type to the Preact test configuration. This change has no demonstrated connection to the Vue field reactivity and reset requirements in [#2390]. Th… Remove the unrelated packages/preact-form/tsconfig.json change. Keep the Vue implementation, its required test configuration and fixtures, regression tests, and changeset.
Docstring Coverage ⚠️ Warning Docstring coverage is 2.60% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 77 functions across 41 files. (1 skipped: … Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (2 passed)
Check name Status Explanation
Title check ✅ Passed The title clearly identifies the main change: improved Vue reactivity. It is concise and related to the pull request objectives.
Linked Issues check ✅ Passed The Vue implementation addresses [#2390]. createFieldView exposes reactive value, meta, and errors getters and delegates handlers through the current field API. The updated field subscriptions…
Full details: Out of Scope Changes check

Explanation

packages/preact-form/tsconfig.json adds the node type to the Preact test configuration. This change has no demonstrated connection to the Vue field reactivity and reset requirements in [#2390]. The Vue test configuration, fixtures, changeset, and Vue source changes support the linked issue.

Full details: Docstring Coverage

Explanation

Docstring coverage is 2.60% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 77 functions across 41 files. (1 skipped: 1 unsupported.)

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nx-cloud Bot commented Sep 22, 2026

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View your CI Pipeline Execution ↗ for commit e187170

Command Status Duration Result
nx affected --targets=test:sherif,test:knip,tes... ✅ Succeeded 3m 30s View ↗
nx run-many --target=build --exclude=examples/** ✅ Succeeded 2s View ↗

☁️ Nx Cloud last updated this comment at 2026-09-22 09:58:26 UTC

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🚀 Changeset Version Preview

7 package(s) bumped directly, 6 bumped as dependents.

🟨 Minor bumps

Package Version Reason
@tanstack/form-core 2.0.0-alpha.2 → 2.0.0-alpha.3 Changeset
@tanstack/lit-form 2.0.0-alpha.2 → 2.0.0-alpha.3 Changeset
@tanstack/preact-form 2.0.0-alpha.2 → 2.0.0-alpha.3 Changeset
@tanstack/react-form 2.0.0-alpha.2 → 2.0.0-alpha.3 Changeset
@tanstack/solid-form 2.0.0-alpha.2 → 2.0.0-alpha.3 Changeset
@tanstack/svelte-form 2.0.0-alpha.2 → 2.0.0-alpha.3 Changeset
@tanstack/vue-form 2.0.0-alpha.2 → 2.0.0-alpha.3 Changeset
@tanstack/angular-form 2.0.0-alpha.2 → 2.0.0-alpha.3 Dependent
@tanstack/react-form-nextjs 2.0.0-alpha.2 → 2.0.0-alpha.3 Dependent
@tanstack/react-form-start 2.0.0-alpha.2 → 2.0.0-alpha.3 Dependent

🟩 Patch bumps

Package Version Reason
@tanstack/form-devtools 1.0.0-alpha.2 → 1.0.0-alpha.3 Dependent
@tanstack/react-form-devtools 1.0.0-alpha.2 → 1.0.0-alpha.3 Dependent
@tanstack/solid-form-devtools 1.0.0-alpha.2 → 1.0.0-alpha.3 Dependent

@pkg-pr-new

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@tanstack/angular-form

npm i https://pkg.pr.new/@tanstack/angular-form@2401

@tanstack/form-core

npm i https://pkg.pr.new/@tanstack/form-core@2401

@tanstack/form-devtools

npm i https://pkg.pr.new/@tanstack/form-devtools@2401

@tanstack/lit-form

npm i https://pkg.pr.new/@tanstack/lit-form@2401

@tanstack/preact-form

npm i https://pkg.pr.new/@tanstack/preact-form@2401

@tanstack/react-form

npm i https://pkg.pr.new/@tanstack/react-form@2401

@tanstack/react-form-devtools

npm i https://pkg.pr.new/@tanstack/react-form-devtools@2401

@tanstack/react-form-nextjs

npm i https://pkg.pr.new/@tanstack/react-form-nextjs@2401

@tanstack/react-form-start

npm i https://pkg.pr.new/@tanstack/react-form-start@2401

@tanstack/solid-form

npm i https://pkg.pr.new/@tanstack/solid-form@2401

@tanstack/solid-form-devtools

npm i https://pkg.pr.new/@tanstack/solid-form-devtools@2401

@tanstack/svelte-form

npm i https://pkg.pr.new/@tanstack/svelte-form@2401

@tanstack/vue-form

npm i https://pkg.pr.new/@tanstack/vue-form@2401

commit: e187170

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⚠️ Please install the 'codecov app svg image' to ensure uploads and comments are reliably processed by Codecov.

Codecov Report

❌ Patch coverage is 70.27027% with 11 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (alpha@dc92e8a). Learn more about missing BASE report.

Files with missing lines Patch % Lines
packages/vue-form/src/VueForm/fieldView.lib.ts 56.00% 11 Missing ⚠️
❗ Your organization needs to install the Codecov GitHub app to enable full functionality.
Additional details and impacted files
@@           Coverage Diff            @@
##             alpha    #2401   +/-   ##
========================================
  Coverage         ?   91.68%           
========================================
  Files            ?       29           
  Lines            ?      457           
  Branches         ?       41           
========================================
  Hits             ?      419           
  Misses           ?       37           
  Partials         ?        1           

☔ View full report in Codecov by Harness.
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@crutchcorn crutchcorn changed the title fix: Vue reactivity in simple example now works [v2] Vue reactivity now works Sep 22, 2026
Base automatically changed from vite-browser-mode to alpha September 22, 2026 09:31

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Actionable comments posted: 1


  • 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
In `@packages/preact-form/tsconfig.json`:
- Line 7: Update the tsconfig types list to include the Node type definitions
alongside the existing vitest/browser entry, so process.env.CI in
vitest.config.ts resolves during type checking.

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📥 Commits

Reviewing files that changed from the base of the PR and between dc92e8a and f5f142b.

⛔ Files ignored due to path filters (1)
  • pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml
📒 Files selected for processing (74)
  • .changeset/silent-tools-cry.md
  • examples/vue/array/vite.config.ts
  • examples/vue/large-form/vite.config.ts
  • examples/vue/multi-step-wizard/vite.config.ts
  • examples/vue/simple/vite.config.ts
  • examples/vue/standard-schema/vite.config.ts
  • package.json
  • packages/angular-form/package.json
  • packages/angular-form/tests/app-field.spec.ts
  • packages/angular-form/tests/form-group.spec.ts
  • packages/angular-form/tests/form-type.spec.ts
  • packages/angular-form/tests/tanstack-field.spec.ts
  • packages/angular-form/tests/test-setup.ts
  • packages/angular-form/tsconfig.spec.json
  • packages/angular-form/vite.config.ts
  • packages/form-core/tsconfig.json
  • packages/form-core/vitest.config.ts
  • packages/form-devtools/vite.config.ts
  • packages/lit-form/tests/form-controller.spec.ts
  • packages/lit-form/vite.config.ts
  • packages/preact-form/package.json
  • packages/preact-form/tests/FieldGroup.spec.tsx
  • packages/preact-form/tests/FormField.spec.tsx
  • packages/preact-form/tests/FormGroup.spec.tsx
  • packages/preact-form/tests/createFormHook.spec.tsx
  • packages/preact-form/tests/test-setup.ts
  • packages/preact-form/tests/useForm.spec.tsx
  • packages/preact-form/tsconfig.json
  • packages/preact-form/vitest.config.ts
  • packages/react-form-devtools/package.json
  • packages/react-form-devtools/tests/test-setup.ts
  • packages/react-form-devtools/tsconfig.json
  • packages/react-form-devtools/vite.config.ts
  • packages/react-form-nextjs/package.json
  • packages/react-form-nextjs/tests/test-setup.ts
  • packages/react-form-nextjs/vite.config.ts
  • packages/react-form-start/package.json
  • packages/react-form-start/tests/test-setup.ts
  • packages/react-form-start/vite.config.ts
  • packages/react-form/package.json
  • packages/react-form/tests/FieldGroup.spec.tsx
  • packages/react-form/tests/FormField.spec.tsx
  • packages/react-form/tests/FormGroup.spec.tsx
  • packages/react-form/tests/createFormHook.spec.tsx
  • packages/react-form/tests/test-setup.ts
  • packages/react-form/tests/useForm.spec.tsx
  • packages/react-form/vitest.config.ts
  • packages/solid-form-devtools/tests/test-setup.ts
  • packages/solid-form-devtools/vitest.config.ts
  • packages/solid-form/tests/test-setup.ts
  • packages/solid-form/vitest.config.ts
  • packages/svelte-form/package.json
  • packages/svelte-form/tests/adapter.test.ts
  • packages/svelte-form/tests/adapter/DefaultOptions.svelte
  • packages/svelte-form/tests/createFormHook.test.ts
  • packages/svelte-form/tests/test-setup.ts
  • packages/svelte-form/vite.config.ts
  • packages/vue-form/package.json
  • packages/vue-form/src/AppForm/contexts.lib.ts
  • packages/vue-form/src/VueForm/Components.lib.ts
  • packages/vue-form/src/VueForm/fieldSubscriptions.lib.ts
  • packages/vue-form/src/VueForm/fieldView.lib.ts
  • packages/vue-form/src/VueForm/useField.lib.ts
  • packages/vue-form/tests/adapter.spec.tsx
  • packages/vue-form/tests/array-field-reactivity.spec.ts
  • packages/vue-form/tests/createFormHook.spec.tsx
  • packages/vue-form/tests/field-reactivity.spec.ts
  • packages/vue-form/tests/fixtures/ArrayFieldControl.vue
  • packages/vue-form/tests/fixtures/ArrayFieldReactivity.vue
  • packages/vue-form/tests/fixtures/FieldControl.vue
  • packages/vue-form/tests/fixtures/FieldReactivity.vue
  • packages/vue-form/tests/test-setup.ts
  • packages/vue-form/tsconfig.json
  • packages/vue-form/vitest.config.ts
💤 Files with no reviewable changes (14)
  • packages/solid-form/tests/test-setup.ts
  • examples/vue/multi-step-wizard/vite.config.ts
  • packages/preact-form/tests/test-setup.ts
  • examples/vue/simple/vite.config.ts
  • examples/vue/array/vite.config.ts
  • packages/svelte-form/tests/test-setup.ts
  • packages/react-form-devtools/tests/test-setup.ts
  • packages/react-form-start/tests/test-setup.ts
  • packages/react-form-nextjs/tests/test-setup.ts
  • examples/vue/large-form/vite.config.ts
  • packages/vue-form/tests/test-setup.ts
  • package.json
  • examples/vue/standard-schema/vite.config.ts
  • packages/solid-form-devtools/tests/test-setup.ts

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Comment thread packages/preact-form/tsconfig.json Outdated
crutchcorn and others added 2 commits September 22, 2026 02:53
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

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