Fix issues with SSR

[crutchcorn]

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]

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Latest commit: 30a5767

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---

☁️ Nx Cloud last updated this comment at 2026-01-30 03:41:36 UTC

[pkg-pr-new]

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commit: 30a5767

[crutchcorn]

List of related issues:

#1611

#1609

#1571

#1260

#1944

[sentry]

Codecov Report

❌ Patch coverage is 75.34247% with 18 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.81%. Comparing base (6892ed0) to head (30a5767).
⚠️ Report is 128 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/react-form/src/useForm.tsx	50.00%	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%   89.81%   -0.55%     
==========================================
  Files          38       49      +11     
  Lines        1752     2002     +250     
  Branches      444      506      +62     
==========================================
+ Hits         1583     1798     +215     
- Misses        149      183      +34     
- Partials       20       21       +1     

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