feat: export ReactFormApi (#868)

* Update useForm.tsx

* feat: export ReactFormApi

---------

Co-authored-by: Lachlan Collins <[email protected]>
Co-authored-by: Leonardo Montini <[email protected]>

Author: 3 people

packages/react-form/src/index.ts

@@ -1,5 +1,6 @@
 export * from '@tanstack/form-core'
 
+export type { ReactFormApi } from './useForm'
 export { useForm } from './useForm'
 
 export type { UseField, FieldComponent } from './useField'

packages/react-form/src/useForm.tsx

@@ -10,7 +10,7 @@ import type { NodeType } from './types'
 /**
  * Fields that are added onto the `FormAPI` from `@tanstack/form-core` and returned from `useForm`
  */
-interface ReactFormApi<
+export interface ReactFormApi<
   TFormData,
   TFormValidator extends Validator<TFormData, unknown> | undefined = undefined,
 > {