/**
 * Markdown Validator
 *
 * Enhanced validation for FHIR markdown content:
 * - CommonMark syntax validation
 * - Dangerous content detection (XSS, scripts)
 * - Link validation (broken links, external URLs)
 * - Image reference validation
 * - Max length enforcement
 * - Heading structure validation
 */
import type { ValidationIssue } from '../types';
export interface MarkdownValidationConfig {
    /** Maximum allowed length */
    maxLength?: number;
    /** Allow external URLs */
    allowExternalUrls?: boolean;
    /** Allow images */
    allowImages?: boolean;
    /** Allow raw HTML */
    allowRawHtml?: boolean;
    /** Check for XSS patterns */
    detectXss?: boolean;
}
export declare class MarkdownValidator {
    private config;
    constructor(config?: MarkdownValidationConfig);
    /**
     * Set validation config
     */
    setConfig(config: Partial<MarkdownValidationConfig>): void;
    /**
     * Validate markdown content
     */
    validate(markdown: string, path: string, resourceType: string): ValidationIssue[];
    /**
     * Detect potential XSS patterns
     */
    private detectXss;
    /**
     * Detect raw HTML in markdown
     */
    private detectRawHtml;
    /**
     * Validate links in markdown
     */
    private validateLinks;
    /**
     * Detect images in markdown
     */
    private detectImages;
    /**
     * Validate markdown structure
     */
    private validateStructure;
}
export declare const markdownValidator: MarkdownValidator;
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