import { MutableRefObject, RefObject } from 'react';
export declare const RAF_THROTTLE_INTERVAL = 100;
export declare const resizeBackdrops: ({ anchorEl, leftBackdropRef, rightBackdropRef, topBackdropRef, bottomBackdropRef, rafIdRef, lastResizeTimestamp }: {
    anchorEl?: HTMLElement | null;
    leftBackdropRef: RefObject<HTMLDivElement>;
    rightBackdropRef: RefObject<HTMLDivElement>;
    topBackdropRef: RefObject<HTMLDivElement>;
    bottomBackdropRef: RefObject<HTMLDivElement>;
    rafIdRef: MutableRefObject<number>;
    lastResizeTimestamp?: number;
}) => void;
