import { PluginWithOptions } from 'markdown-it';
import { MarkdownItHeader } from '@mdit-vue/types';
export { MarkdownItHeader } from '@mdit-vue/types';

/**
 * Options of @mdit-vue/plugin-headers
 */
interface HeadersPluginOptions {
    /**
     * A custom slugification function
     *
     * Should use the same slugify function with markdown-it-anchor
     * to ensure the link is matched
     */
    slugify?: (str: string) => string;
    /**
     * A function for formatting header title
     */
    format?: (str: string) => string;
    /**
     * Heading level that going to be extracted
     *
     * Should be a subset of markdown-it-anchor's `level` option
     * to ensure the slug is existed
     *
     * @default [2,3]
     */
    level?: number[];
    /**
     * Should allow headers inside nested blocks or not
     *
     * If set to `true`, headers inside blockquote, list, etc. would also be extracted.
     *
     * @default false
     */
    shouldAllowNested?: boolean;
}
declare module '@mdit-vue/types' {
    interface MarkdownItEnv {
        /**
         * The headers that extracted by `@mdit-vue/plugin-headers`
         */
        headers?: MarkdownItHeader[];
    }
}

/**
 * Get markdown headers info
 *
 * Extract them into env
 */
declare const headersPlugin: PluginWithOptions<HeadersPluginOptions>;

export { type HeadersPluginOptions, headersPlugin };