import * as React from 'react';
/**
 * A React.useRef() that is initialized with a function. Note that it accepts an optional
 * initialization argument, so the initialization function doesn't need to be an inline closure.
 *
 * @usage
 *   const ref = useRefWithInit(sortColumns, columns)
 */
export declare function useRefWithInit<T>(init: () => T): React.RefObject<T>;
export declare function useRefWithInit<T, U>(init: (arg: U) => T, initArg: U): React.RefObject<T>;