/**
 * Narrative Validator
 *
 * Validates FHIR Narrative (text.div) XHTML content according to FHIR specification.
 *
 * FHIR Narrative Rules:
 * 1. Must be valid XHTML (well-formed XML)
 * 2. Root element must be <div xmlns="http://www.w3.org/1999/xhtml">
 * 3. Only allowed XHTML elements and attributes
 * 4. No scripts, no forms, no external references
 * 5. No <!DOCTYPE> or <!ENTITY> declarations (XXE attack protection)
 */
import type { ValidationIssue } from '../types';
export declare class NarrativeValidator {
    /**
     * Validate narrative content of a resource
     */
    validateNarrative(resource: any, resourceType: string): ValidationIssue[];
    /**
     * Recursively validate Composition.section[].text narratives. Each
     * section may carry its own `text` Narrative, and may contain nested
     * `section` BackboneElements.
     */
    private validateCompositionSectionNarratives;
    /**
     * Validate `Narrative.extension` entries with the HL7-defined
     * `textLink` URL. Each instance must carry sub-extensions `htmlid`
     * (string) and `data` (uri); the htmlid value should appear as an
     * `id="…"` attribute in the rendered xhtml, and the data uri (when it
     * starts with `#`) should resolve to a contained resource id.
     */
    private validateTextLinkExtensions;
}
export declare const narrativeValidator: NarrativeValidator;
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