import React from 'react';
import { ViewStyle, TextStyle } from 'react-native';
export declare type NavBarProp = {
    style?: ViewStyle;
    TextStyle?: TextStyle;
    title?: string;
    onBack?: () => void;
    left?: JSX.Element | null;
    middle?: JSX.Element;
    right?: JSX.Element | null;
    scrollY?: number;
    breakPoint?: number;
    barStyle?: 'dark-content' | 'light-content';
    navigation?: any;
    onBreak?: (isBreak: boolean) => void;
    shadow?: boolean;
    float?: boolean;
};
export declare const NavBarHeight: number;
declare const NavBar: React.FC<NavBarProp>;
export default NavBar;