fix: handle numeric keys as array index only if parent is an array

[Balastrong]

Fixes #985

[nx-cloud]

☁️ Nx Cloud Report

CI is running/has finished running commands for commit e0154b3. As they complete they will appear below. Click to see the status, the terminal output, and the build insights.

📂 See all runs for this CI Pipeline Execution

---

✅ Successfully ran 2 targets

• nx affected --targets=test:sherif,test:knip,test:eslint,test:lib,test:types,test:build,build --parallel=3
• nx run-many --target=build --exclude=examples/**

---

Sent with 💌 from NxCloud.

[pkg-pr-new]

Open in Stackblitz

More templates

• @tanstack/form-example-angular-array
• @tanstack/form-example-angular-simple
• @tanstack/form-example-angular-valibot
• @tanstack/form-example-angular-zod
• @tanstack/form-example-angular-yup
• @tanstack/form-example-lit-simple
• @tanstack/form-example-lit-ui-libraries
• @tanstack/form-example-solid-array
• @tanstack/form-example-solid-simple
• @tanstack/form-example-solid-valibot
• @tanstack/form-example-solid-zod
• @tanstack/form-example-solid-yup
• @tanstack/form-example-react-array
• @tanstack/field-errors-from-form-validators
• @tanstack/form-example-react-next-server-actions
• @tanstack/form-example-react-query-integration
• @tanstack/form-example-react-simple
• @tanstack/form-example-react-tanstack-start
• @tanstack/form-example-react-ui-libraries
• @tanstack/form-example-react-valibot
• @tanstack/form-example-react-yup
• @tanstack/form-example-react-zod
• @tanstack/form-example-vue-array
• @tanstack/form-example-vue-simple
• @tanstack/form-example-vue-valibot
• @tanstack/form-example-vue-yup
• @tanstack/form-example-vue-zod

@tanstack/angular-form

pnpm add https://pkg.pr.new/@tanstack/angular-form@993

@tanstack/lit-form

pnpm add https://pkg.pr.new/@tanstack/lit-form@993

@tanstack/react-form

pnpm add https://pkg.pr.new/@tanstack/react-form@993

@tanstack/solid-form

pnpm add https://pkg.pr.new/@tanstack/solid-form@993

@tanstack/vue-form

pnpm add https://pkg.pr.new/@tanstack/vue-form@993

@tanstack/valibot-form-adapter

pnpm add https://pkg.pr.new/@tanstack/valibot-form-adapter@993

@tanstack/yup-form-adapter

pnpm add https://pkg.pr.new/@tanstack/yup-form-adapter@993

@tanstack/zod-form-adapter

pnpm add https://pkg.pr.new/@tanstack/zod-form-adapter@993

@tanstack/form-core

pnpm add https://pkg.pr.new/@tanstack/form-core@993

commit: e0154b3

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.45%. Comparing base (5473bb8) to head (e0154b3).
Report is 146 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #993      +/-   ##
==========================================
- Coverage   91.55%   88.45%   -3.11%     
==========================================
  Files          21       26       +5     
  Lines         900     1074     +174     
  Branches      206      265      +59     
==========================================
+ Hits          824      950     +126     
- Misses         71      115      +44     
- Partials        5        9       +4     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[Balastrong]

@maksymskuibida can you please validate that this fix works in your project?

You can try the version of this PR with

yarn add https://pkg.pr.new/@tanstack/react-form@993

[maksymskuibida]

@maksymskuibida can you please validate that this fix works in your project?

You can try the version of this PR with

yarn add https://pkg.pr.new/@tanstack/react-form@993

I am sorry for late response. I just tested and it does not work. The same as it was before

[Balastrong]

@maksymskuibida on the code sandbox you provided it seems to be working (make sure to stop the dev server and run yarn dev again after installing the package)
I tried to fork the demo here.

If you have a more complete example where it's still broken please share it so I can give it another try :D