export default util;
declare namespace util {
    export function isAppearSupported(props: any): any;
    export function isAppearSupported(props: any): any;
    export function isEnterSupported(props: any): any;
    export function isEnterSupported(props: any): any;
    export function isLeaveSupported(props: any): any;
    export function isLeaveSupported(props: any): any;
    export function allowAppearCallback(props: any): any;
    export function allowAppearCallback(props: any): any;
    export function allowEnterCallback(props: any): any;
    export function allowEnterCallback(props: any): any;
    export function allowLeaveCallback(props: any): any;
    export function allowLeaveCallback(props: any): any;
}