fix(core, devtools): optimise event emissions

[harry-whorlow]

No description provided.

[changeset-bot]

🦋 Changeset detected

Latest commit: 79b34ad

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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[nx-cloud]

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View your CI Pipeline Execution ↗ for commit 79b34ad

Command	Status	Duration	Result
nx affected --targets=test:sherif,test:knip,tes...	❌ Failed	1m 20s	View ↗
nx run-many --target=build --exclude=examples/**	❌ Failed	23s	View ↗

---

☁️ Nx Cloud last updated this comment at 2025-10-08 14:34:33 UTC

[pkg-pr-new]

More templates

• @tanstack/form-example-angular-array
• @tanstack/form-example-angular-large-form
• @tanstack/form-example-angular-simple
• @tanstack/form-example-angular-standard-schema
• @tanstack/form-example-lit-array
• @tanstack/form-example-lit-simple
• @tanstack/form-example-lit-standard-schema
• @tanstack/form-example-lit-ui-libraries
• @tanstack/form-example-react-array
• @tanstack/form-example-react-compiler
• @tanstack/form-example-react-devtools
• @tanstack/form-example-react-dynamic
• @tanstack/field-errors-from-form-validators
• @tanstack/form-example-react-large-form
• @tanstack/form-example-react-next-server-actions
• @tanstack/form-example-react-query-integration
• @tanstack/form-example-remix
• @tanstack/form-example-react-simple
• @tanstack/form-example-react-standard-schema
• @tanstack/form-example-react-tanstack-start
• @tanstack/form-example-react-ui-libraries
• @tanstack/form-example-solid-array
• @tanstack/form-example-solid-large-form
• @tanstack/form-example-solid-simple
• @tanstack/form-example-solid-standard-schema
• @tanstack/form-example-svelte-array
• @tanstack/form-example-svelte-simple
• @tanstack/form-example-svelte-standard-schema
• @tanstack/form-example-vue-array
• @tanstack/form-example-vue-simple
• @tanstack/form-example-vue-standard-schema

@tanstack/angular-form

npm i https://pkg.pr.new/@tanstack/angular-form@1758

@tanstack/form-core

npm i https://pkg.pr.new/@tanstack/form-core@1758

@tanstack/form-devtools

npm i https://pkg.pr.new/@tanstack/form-devtools@1758

@tanstack/lit-form

npm i https://pkg.pr.new/@tanstack/lit-form@1758

@tanstack/react-form

npm i https://pkg.pr.new/@tanstack/react-form@1758

@tanstack/react-form-devtools

npm i https://pkg.pr.new/@tanstack/react-form-devtools@1758

@tanstack/solid-form

npm i https://pkg.pr.new/@tanstack/solid-form@1758

@tanstack/svelte-form

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@tanstack/vue-form

npm i https://pkg.pr.new/@tanstack/vue-form@1758

commit: 299ede7

[codecov]

Codecov Report

❌ Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 90.35%. Comparing base (6892ed0) to head (299ede7).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/form-core/src/FormApi.ts	87.50%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1758   +/-   ##
=======================================
  Coverage   90.35%   90.35%           
=======================================
  Files          38       38           
  Lines        1752     1753    +1     
  Branches      444      444           
=======================================
+ Hits         1583     1584    +1     
  Misses        149      149           
  Partials       20       20           

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