import { Selector, Comparer } from 'use-optimized-selector';
import { FormikApi, FormikState } from '../types';
/**
 * Use Formik State from within Render.
 *
 * @param selector a memoized or constant function like `state => state.isSubmitting`
 * @param comparer an optional comparer, for checking whether previous and next selector results are equal
 * @param shouldSubscribe a bail-out for when the value doesn't need to be updated after the initial render. enables optional subscriptions for `render` props.
 */
export declare const useFormikState: <Values, Return = FormikState<Values>>(selector?: Selector<FormikState<Values>, Return>, comparer?: Comparer<Return> | undefined, shouldSubscribe?: boolean) => [Return, FormikApi<Values>];