/**
 * Remark plugin for signature lines
 *
 * Detects long sequences of underscores (10 or more consecutive) and wraps them
 * in HTML spans with a CSS class for styling. This is commonly used in legal
 * documents to indicate signature lines.
 *
 * @example
 * Input:  "Signature: __________________________"
 * Output: "Signature: <span class=\"signature-line\">__________________________</span>"
 *
 * @module plugins/remark/signature-lines
 */
import type { Plugin } from 'unified';
import type { Root } from 'mdast';
/**
 * Options for the signature lines plugin
 */
export interface SignatureLinesOptions {
    /**
     * Minimum number of consecutive underscores to treat as a signature line
     * @default 10
     */
    minUnderscores?: number;
    /**
     * Whether to add CSS class to signature lines
     * @default true
     */
    addCssClass?: boolean;
    /**
     * Custom CSS class name for signature lines
     * @default "signature-line"
     */
    cssClassName?: string;
    /**
     * Whether to enable debug logging
     * @default false
     */
    debug?: boolean;
}
/**
 * Remark plugin that detects and marks signature lines
 *
 * This plugin processes text nodes in the markdown AST and identifies sequences
 * of underscores that are likely signature lines (by default, 10 or more consecutive
 * underscores). When found, it wraps them in HTML span elements with a CSS class
 * for styling.
 *
 * @param options - Configuration options for the plugin
 * @returns A unified transformer function
 *
 * @example
 * ```typescript
 * unified()
 *   .use(remarkParse)
 *   .use(remarkSignatureLines, { minUnderscores: 15 })
 *   .use(remarkStringify)
 * ```
 */
declare const remarkSignatureLines: Plugin<[SignatureLinesOptions?], Root>;
export default remarkSignatureLines;
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