useForm

Lightweight form state management with validation, touched tracking, and submit handling. No external dependencies.

Installation

Prop	Type	Default	Description
values	T	—	Current form values object.
errors	Partial<Record<keyof T, string>>	—	Validation error messages.
touched	Partial<Record<keyof T, boolean>>	—	Which fields have been blurred.
isSubmitting	boolean	—	True while onSubmit is running.
isDirty	boolean	—	True when values differ from initialValues.
isValid	boolean	—	True when validate returns no errors.
setValue	(field, value) => void	—	Set a single field value.
handleChange	(field) => ChangeHandler	—	Returns an onChange handler.
handleBlur	(field) => () => void	—	Returns an onBlur handler.
handleSubmit	(e?) => void	—	Runs validation then calls onSubmit.
reset	() => void	—	Resets to initialValues.