export interface MediaData {
    mediaKey: string;
    directPath: string;
    url: string;
    mimetype: string;
    messageType: string;
    caption?: string;
    fileName?: string;
    fileLength?: string;
    ptt?: boolean;
    seconds?: number;
}
export declare function extractMediaData(payload: any): MediaData;
export declare function hasMedia(payload: any): boolean;
export declare function getMediaType(payload: any): 'image' | 'video' | 'audio' | 'document' | 'sticker' | null;
export declare function extractCaption(payload: any): string | undefined;
export declare function extractFileName(payload: any): string | undefined;