export default function (): {
    isIOS: boolean;
    isAndroid: boolean;
    isWeex: boolean;
    isTB: boolean;
    isTM: boolean;
    appName: string;
    isIphoneX: boolean;
    statusBarHeight: number;
    navBarHeight: number;
    bottomBarHeight: number;
    isWeb: boolean;
    clientHeight: number;
    clientWidth: number;
    isPreview: boolean;
};