formik2nd@3.0.2

After changing a field, other fields aren't re-render.

Work only <Formik children/> as ReactNode. If you use <Formik component/> or <Formik children/> as function, formik run re-render after any change filed.

Formik - https://codesandbox.io/s/formik-rerender-test-v8gw7x

Formik2nd - https://codesandbox.io/s/formik2nd-rerender-test-forked-mlwvqr

Support React 16, 17, 18

New hook useFormikSelector

FormikState move to FormikProps.state

FormikState used to be included in FormikProps. Now FormikState is in the state properties of FormikProps.

FormikProps.dirty => FormikProps.isDirty()

FormikProps.isValid => FormikProps.isValid()

FastFiled === Field

Difference between FastField and Field, FastField is only re-render after formik state change by its name.

FieldArray, methods pop, remove, unshift return Promise

hook useFormik don't work

Because now Formik without FormikProvider don't work.

isInitialValid has been deprecated and remove

<* render/> has been deprecated and remove

ErrorMessage, Field, FieldArray, Formik.

<Formik innerRef/> don't work