Fix issues with SSR by crutchcorn · Pull Request #1890 · TanStack/form

crutchcorn · 2025-12-01T09:30:22Z

Without introducing breaking changes this should fix a ton of issues with SSR

TODO

Write initial transform test for core
Test Start no JS SSR
Test Remix no JS SSR

changeset-bot · 2025-12-01T09:30:27Z

🦋 Changeset detected

Latest commit: 8c2b568

The changes in this PR will be included in the next version bump.

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nx-cloud · 2025-12-01T09:30:47Z

View your CI Pipeline Execution ↗ for commit 8c2b568

Command	Status	Duration	Result
`nx affected --targets=test:sherif,test:knip,tes...`	✅ Succeeded	1m 23s	View ↗
`nx run-many --target=build --exclude=examples/**`	✅ Succeeded	1s	View ↗

☁️ Nx Cloud last updated this comment at 2026-02-13 03:39:40 UTC

pkg-pr-new · 2025-12-01T09:32:57Z

More templates

@tanstack/angular-form

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@tanstack/form-core

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@tanstack/form-devtools

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@tanstack/lit-form

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@tanstack/react-form

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@tanstack/react-form-devtools

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@tanstack/react-form-nextjs

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@tanstack/react-form-remix

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@tanstack/react-form-start

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@tanstack/solid-form

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@tanstack/solid-form-devtools

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@tanstack/svelte-form

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@tanstack/vue-form

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commit: 8c2b568

crutchcorn · 2025-12-01T19:45:51Z

List of related issues:

# Conflicts: # examples/react/next-server-actions/package.json

… fix-ssr-issue

sentry · 2026-01-28T02:47:24Z

Codecov Report

❌ Patch coverage is 78.94737% with 16 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.93%. Comparing base (6892ed0) to head (8c2b568).
⚠️ Report is 134 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/form-core/src/utils.ts	60.00%	10 Missing ⚠️
packages/form-core/src/transform.ts	89.47%	2 Missing ⚠️
packages/form-core/src/FormApi.ts	95.45%	1 Missing ⚠️
packages/react-form-nextjs/src/useTransform.ts	0.00%	1 Missing ⚠️
packages/react-form-remix/src/useTransform.ts	0.00%	1 Missing ⚠️
packages/react-form-start/src/useTransform.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1890      +/-   ##
==========================================
- Coverage   90.35%   89.93%   -0.43%     
==========================================
  Files          38       49      +11     
  Lines        1752     2006     +254     
  Branches      444      507      +63     
==========================================
+ Hits         1583     1804     +221     
- Misses        149      181      +32     
- Partials       20       21       +1

☔ View full report in Codecov by Sentry.
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… fix-ssr-issue

# Conflicts: # packages/react-form-start/src/createServerValidate.tsx

LeCarbonator

LGTM! Just some small nitpicks, but they're not blocking as far as I'm concerned.

Co-authored-by: LeCarbonator <18158911+LeCarbonator@users.noreply.github.com>

Things should now work as-expected in many more scenarios than before.

crutchcorn added 14 commits November 30, 2025 00:27

test: add failing test for merge-form behavior

f43e9a0

chore: attempt 1

44e6f2b

chore: attempt 2

fa25c4c

chore: attempt 3

6e713a2

chore: attempt 4

67e0820

chore: attempt 5

7782f56

CHORE!: REMOVE THIS ATTEMP

bf888d6

chore: attempt 6

20db3db

WIP: TO REVERT: Temp replace Next action with failing usage

464a129

chore: add logs

c293607

chore: attempt 7

9a62257

chore: demo working version

c70194a

feat: move to useMerge away from useTransform

4bf648a

chore: fix remix and start

106789f

ci: apply automated fixes and generate docs

b91b88d

crutchcorn mentioned this pull request Dec 1, 2025

feat (form-core): Merging Form-level server errors with Field-level errors #1432

Closed

crutchcorn and others added 4 commits December 8, 2025 09:57

Merge branch 'main' into fix-ssr-issue

3c369df

# Conflicts: # examples/react/next-server-actions/package.json

chore: attempt 8

88d0d7c

chore: attempt to fix Start and Remix as well

2446858

ci: apply automated fixes and generate docs

322979e

crutchcorn mentioned this pull request Dec 8, 2025

[next.js] initialFormState and no fields rendered may cause state.values undefined #1923

Open

crutchcorn mentioned this pull request Jan 10, 2026

React Example: Next Server Actions does not work as expected #1984

Closed

crutchcorn and others added 4 commits January 27, 2026 18:12

Merge branch 'main' into fix-ssr-issue

cfedaf7

chore: add our own deepCopy impl

85a4e49

ci: apply automated fixes and generate docs

1c651e7

chore: fix eslint

388b78e

crutchcorn and others added 3 commits January 27, 2026 18:33

Merge branch 'fix-ssr-issue' of https://github.com/TanStack/form into…

9e0b1b9

… fix-ssr-issue

chore: fix more issues

a693662

ci: apply automated fixes and generate docs

d03973e

crutchcorn changed the title ~~[WIP] Fix issues with SSR~~ Fix issues with SSR Jan 28, 2026

crutchcorn changed the title ~~Fix issues with SSR~~ [WIP] Fix issues with SSR Jan 28, 2026

crutchcorn marked this pull request as draft January 28, 2026 02:48

crutchcorn added 4 commits January 27, 2026 19:15

fix: JS disabled SSR envs should work now

94ab7c2

Merge branch 'fix-ssr-issue' of https://github.com/TanStack/form into…

838db1f

… fix-ssr-issue

test: add tests for SSR mergeForm

e882d4f

fix: handle field errors from transform

e830a7d

crutchcorn mentioned this pull request Jan 30, 2026

fix(react-form-start): remove sensitive data logging in createServerValidate #2010

Merged

3 of 4 tasks

crutchcorn changed the title ~~[WIP] Fix issues with SSR~~ Fix issues with SSR Jan 30, 2026

crutchcorn marked this pull request as ready for review January 30, 2026 03:30

crutchcorn added 5 commits January 29, 2026 19:35

chore: remove log

294c08a

Merge branch 'main' into fix-ssr-issue

23560c6

# Conflicts: # packages/react-form-start/src/createServerValidate.tsx

chore: fix props

30a5767

test: add React unit test

802eb79

chore: refactor to remove setTimeout

4b80589

LeCarbonator approved these changes Feb 2, 2026

View reviewed changes

Comment thread packages/form-core/src/utils.ts Resolved

Comment thread packages/react-form-nextjs/tests/useTransform.spec.tsx Resolved

crutchcorn and others added 3 commits February 12, 2026 19:32

Update packages/form-core/src/utils.ts

d531e24

Co-authored-by: LeCarbonator <18158911+LeCarbonator@users.noreply.github.com>

chore: add changeset

b1b7b97

Things should now work as-expected in many more scenarios than before.

ci: apply automated fixes and generate docs

8c2b568

crutchcorn merged commit 72d970a into main Feb 13, 2026
6 of 7 checks passed

crutchcorn deleted the fix-ssr-issue branch February 13, 2026 03:40

github-actions Bot mentioned this pull request Feb 13, 2026

ci: Version Packages #2011

Merged

harry-whorlow mentioned this pull request Apr 10, 2026

First input ignored after action completes #1307

Closed

crutchcorn mentioned this pull request Jul 9, 2026

spike: review form handling and pick a form library for the web rebuild zgeoff/vers#300

Closed

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Fix issues with SSR - #1890

Fix issues with SSR#1890
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