TanStack Form v0

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Form Validation

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API Reference

JavaScript Reference

Classes / FieldApi

Classes / FormApi

Functions / formOptions

Functions / mergeForm

Interfaces / FieldApiOptions

Interfaces / FieldOptions

Interfaces / FieldValidators

Interfaces / FormOptions

Interfaces / FormValidators

Types / DeepKeys

Types / DeepValue

Types / FieldInfo

Types / FieldMeta

Types / FieldState

Types / FormState

Types / Updater

Types / UpdaterFn

Types / ValidationError

Types / ValidationMeta

React Reference

Functions / createServerValidate

Functions / Field

Functions / useField

Functions / useForm

Functions / useTransform

Types / FieldComponent

Types / UseField

Variables / initialFormState

Examples

TanStack Query Integration

Next Server Actions

TanStack Form v0

Framework

Version

Menu

Getting Started

Guides

Form Validation

Async Initial Values

API Reference

JavaScript Reference

Classes / FieldApi

Classes / FormApi

Functions / formOptions

Functions / mergeForm

Interfaces / FieldApiOptions

Interfaces / FieldOptions

Interfaces / FieldValidators

Interfaces / FormOptions

Interfaces / FormValidators

Types / DeepKeys

Types / DeepValue

Types / FieldInfo

Types / FieldMeta

Types / FieldState

Types / FormState

Types / Updater

Types / UpdaterFn

Types / ValidationError

Types / ValidationMeta

React Reference

Functions / createServerValidate

Functions / Field

Functions / useField

Functions / useForm

Functions / useTransform

Types / FieldComponent

Types / UseField

Variables / initialFormState

Examples

TanStack Query Integration

Next Server Actions

Function: mergeForm()

ts

function mergeForm<TFormData, TFormValidator>(baseForm, state): FormApi<NoInfer<TFormData>, NoInfer<TFormValidator>>

function mergeForm<TFormData, TFormValidator>(baseForm, state): FormApi<NoInfer<TFormData>, NoInfer<TFormValidator>>

Type parameters

• TFormData

• TFormValidator extends undefined | Validator<TFormData, unknown> = undefined

Parameters

• baseForm: FormApi<NoInfer<TFormData>, NoInfer<TFormValidator>>

• state: Partial<FormState<TFormData>>

Returns

FormApi<NoInfer<TFormData>, NoInfer<TFormValidator>>

Source

packages/form-core/src/mergeForm.ts:37

Functions / formOptions

Interfaces / FieldApiOptions

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