import { Nullable } from '@viasat/beam-shared/utils/types';
import * as React from 'react';
export declare const useUniversalRef: <ElementType extends HTMLElement = HTMLInputElement>(externalRef: Nullable<(instance: Nullable<ElementType>) => void> | Nullable<React.MutableRefObject<Nullable<ElementType>>>) => {
    refFn: (element: ElementType) => void;
    ref: React.MutableRefObject<Nullable<ElementType>>;
};