export interface IMediaItem {
    url: string;
    alt_text?: string;
    twitter_media_id_str?: string;
}
export declare class MediaItem implements IMediaItem {
    constructor(media_item?: IMediaItem);
    url: string;
    alt_text?: string;
    twitter_media_id_str?: string;
}
export declare function MediaItemsFromString(str: string): Array<IMediaItem>;