/**
 * Detects the operating system of the user, given a user agent string.
 *
 * @returns The name of the operating system, or "unknown" if it could not be determined.
 */
export declare function detectOperatingSystem(): string;
export declare const androidDisableScrolling: () => void;
export declare const androidEnableScrolling: () => void;
export declare const androidEnableDisableScrolling: (isOpen: boolean) => void;
export declare const iosDisableScrolling: () => void;
export declare const iosEnableScrolling: () => void;
export declare const iosEnableDisableScrolling: (isOpen: boolean) => void;
export declare const preventScroll: (isOpen: boolean) => void;