import React from 'react';
export declare const isValidRatio: (ratio?: string) => boolean;
export declare const getInfiniteIndex: (index: number, count: number) => number;
export declare const getRatioHolderStyle: (ratio: string) => React.CSSProperties;
type tGetRootStyle = (arg: {
    width: string | number;
    height: string | number;
    ratio: string;
    style?: {};
}) => React.CSSProperties;
export declare const getRootStyle: tGetRootStyle;
type tGetTrackStyle = (arg: {
    index: number;
    childrenCount: number;
    duration: number;
    offset?: number;
}) => React.CSSProperties;
export declare const getTrackStyle: tGetTrackStyle;
export {};
