import * as React from "react";
export declare type useAnimationProps = {
    visible: boolean;
};
export declare const useAnimation: (props: useAnimationProps) => {
    state: TransitionState;
    animating: boolean;
    onEnd: (event: React.SyntheticEvent) => void;
};
export declare type useAnimationReturnType = ReturnType<typeof useAnimation>;
export declare type TransitionState = "enter" | "leave" | null;
export declare function getElementHeight(el: React.RefObject<HTMLElement> | {
    current?: {
        scrollHeight: number;
    };
}): string | number;
export declare function getElementWidth(el: React.RefObject<HTMLElement> | {
    current?: {
        scrollWidth: number;
    };
}): string | number;
export declare function getAutoSizeDuration(size: number | string): number;