fix(core, devtools): optimise event emissions

[harry-whorlow]

No description provided.

[changeset-bot]

🦋 Changeset detected

Latest commit: d393d57

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

This PR includes changesets to release 9 packages

Name	Type
@tanstack/form-devtools	Patch
@tanstack/react-form	Patch
@tanstack/form-core	Patch
@tanstack/react-form-devtools	Patch
@tanstack/angular-form	Patch
@tanstack/lit-form	Patch
@tanstack/solid-form	Patch
@tanstack/svelte-form	Patch
@tanstack/vue-form	Patch

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View your CI Pipeline Execution ↗ for commit d393d57

Command	Status	Duration	Result
nx affected --targets=test:sherif,test:knip,tes...	✅ Succeeded	41s	View ↗
nx run-many --target=build --exclude=examples/**	✅ Succeeded	9s	View ↗

---

☁️ Nx Cloud last updated this comment at 2025-10-21 15:52:58 UTC

[pkg-pr-new]

More templates

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• @tanstack/form-example-vue-standard-schema

@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-devtools

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commit: d393d57

[codecov]

Codecov Report

❌ Patch coverage is 90.90909% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 90.53%. Comparing base (6892ed0) to head (d393d57).
⚠️ Report is 29 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/form-core/src/FormApi.ts	90.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1758      +/-   ##
==========================================
+ Coverage   90.35%   90.53%   +0.18%     
==========================================
  Files          38       38              
  Lines        1752     1807      +55     
  Branches      444      466      +22     
==========================================
+ Hits         1583     1636      +53     
- Misses        149      151       +2     
  Partials       20       20              

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