import { TransformContext, HeadConfig } from 'vitepress';

interface TransformHeadMetaOptions {
    /**
     * Max length of the excerpt in characters for the meta description.
     *
     * @default 200
     */
    length?: number;
    /**
     * CSS selector for the content element.
     *
     * @default '#VPContent div.content main .vp-doc div'
     */
    contentSelector?: string;
    /**
     * CSS selector for the content element to remove.
     *
     * @default ['h1','.nolebase-page-properties-container']
     */
    removeContentSelector?: string[];
    /**
     * Whether to use the tagline from the frontmatter for the home layout.
     */
    useTaglineForHomeLayout?: boolean;
    /**
     * Handle the excerpt before adding it to the head.
     */
    handleExcerpt?: (excerpt: string, context: Readonly<TransformContext>) => Promise<string>;
}
declare function transformHeadMeta(options?: TransformHeadMetaOptions): (head: HeadConfig[], context: Readonly<TransformContext>) => Promise<HeadConfig[] | void>;

export { transformHeadMeta };