/**
 * @slot Content to be displayed when the article is expanded.
 */
export declare class BiArticle {
    private el;
    private expandableId;
    /**
     * The header of the article
     */
    header: string;
    /**
     * The subtitle of the article
     */
    subtitle: string;
    /**
     * The URL that the article will navigate to on click, if provided
     */
    url?: string;
    /**
     * The target for the link, defaulting to '_self'
     */
    target?: '_blank' | '_self';
    /**
     * The body of the article
     */
    body: string;
    /**
     * The URL of the image to display
     */
    imageUrl: string;
    /**
     * The alt text for the image
     */
    imageAltText?: string;
    /**
     * Whether the article should be expandable to show the content in the slot.
     * Only has effect when the `bi-article` is in a `bi-article-container` with size='small'.
     */
    expandable: boolean;
    size: HTMLBiArticleContainerElement['size'];
    /** Expand and show the content */
    expanded: boolean;
    componentWillLoad(): void;
    render(): any;
}