import { PluginWithOptions } from 'markdown-it';
import matter from 'gray-matter';

type GrayMatterOptions = matter.GrayMatterOption<string, GrayMatterOptions>;
/**
 * Options of @mdit-vue/plugin-frontmatter
 */
interface FrontmatterPluginOptions {
    /**
     * Options of gray-matter
     *
     * @see https://github.com/jonschlinkert/gray-matter#options
     */
    grayMatterOptions?: GrayMatterOptions;
    /**
     * Render the excerpt or not
     *
     * @default true
     */
    renderExcerpt?: boolean;
}
declare module '@mdit-vue/types' {
    interface MarkdownItEnv {
        /**
         * The raw Markdown content without frontmatter
         */
        content?: string;
        /**
         * The excerpt that extracted by `@mdit-vue/plugin-frontmatter`
         *
         * - Would be the rendered HTML when `renderExcerpt` is enabled
         * - Would be the raw Markdown when `renderExcerpt` is disabled
         */
        excerpt?: string;
        /**
         * The frontmatter that extracted by `@mdit-vue/plugin-frontmatter`
         */
        frontmatter?: Record<string, unknown>;
    }
}

/**
 * Get markdown frontmatter and excerpt
 *
 * Extract them into env
 */
declare const frontmatterPlugin: PluginWithOptions<FrontmatterPluginOptions>;

export { frontmatterPlugin };
export type { FrontmatterPluginOptions };