export function isVirtualCamera(stream: any): {
    isVirtual: boolean;
    deviceLabel?: undefined;
} | {
    deviceLabel: any;
    isVirtual: any;
};
export function isDesktop(isMobile: any, isIOS: any): boolean;
export function cameraRequestTimes(): {
    updateTime: (newVal: any, key?: string) => void;
    getStart: () => any;
    getEnd: () => any;
};