export type FileViewerRtfModule = {
    RTFJS?: any;
    default?: any;
};
export type FileViewerRtfLoader = () => Promise<FileViewerRtfModule>;
export declare const registerFileViewerRtfLoader: (loader: FileViewerRtfLoader | null) => void;
export declare const getFileViewerRtfLoader: () => FileViewerRtfLoader | null;