/**
 * HTML section extractor — converts raw HTML into structured sections
 * for LLM-based block mapping.
 *
 * Instead of sending 50KB of raw HTML to the LLM, this module identifies
 * semantic section boundaries, classifies them by CSS class patterns,
 * extracts structured content, and resolves lazy-loaded images.
 */
import type { ExtractedSection, NavExtraction, PageOutline, LayoutNode, VisualSection, RepeatGroup } from "./types.ts";
/** Classify a section by its CSS classes and content */
export declare function classifySection(openTag: string, innerHTML: string, preExtracted?: {
    headings: Array<{
        level: number;
        text: string;
    }>;
}): {
    classHints: string[];
    suggestedBlockType?: string;
};
/**
 * Extract structured sections from HTML.
 *
 * Identifies section boundaries using semantic tags, Elementor containers,
 * and generic div analysis. Classifies each section by CSS class patterns
 * and content heuristics. Resolves lazy-loaded images.
 */
export declare function extractSections(html: string, baseUrl: string): ExtractedSection[];
/**
 * Segment layout nodes into visual sections by detecting vertical gaps.
 */
export declare function segmentByVisualGaps(nodes: LayoutNode[], viewportWidth?: number): VisualSection[];
/**
 * Detect repeated structural patterns within a set of layout nodes.
 * Groups nodes by structural signature and classifies repeat groups.
 */
export declare function detectRepeatedPatterns(nodes: LayoutNode[]): RepeatGroup[];
/**
 * Extract a compact page outline from HTML.
 *
 * Splits the page at heading boundaries (h1/h2) to produce a section-per-heading
 * representation that captures the FULL page structure in ~2KB regardless of HTML size.
 * This ensures the LLM sees every section even when the raw HTML is truncated.
 */
export declare function extractPageOutline(html: string, baseUrl: string, layoutNodes?: LayoutNode[]): PageOutline;
export declare function extractNavigation(html: string, baseUrl: string): NavExtraction;
/**
 * Resolve lazy-loaded image sources in HTML.
 * Replaces data-src, data-lazy-src, etc. with actual src attributes.
 */
export declare function resolveLazyImages(html: string): string;