import type { MutableRefObject } from "react";
declare type UseMutationObserver = {
    active?: boolean;
    onMutate: MutationCallback;
    options?: MutationObserverInit;
} & ({
    ref: MutableRefObject<HTMLElement | null>;
} | {
    element?: HTMLElement | null;
});
/**
 * Accepts a ref and calls the `onMutate` callback when mutations are observed.
 */
export declare const useMutationObserver: ({ active, onMutate, options, ...rest }: UseMutationObserver) => void;
export {};