/**
 * @module docs-loader
 *
 * Documentation Loading and Search Utilities
 *
 * This module provides functionality for loading, searching, and retrieving
 * Macroforge documentation sections. Documentation is stored as markdown files
 * with metadata in `docs/sections.json`.
 *
 * Key features:
 * - Eagerly loads documentation sections (metadata and content) from disk at startup
 * - Supports multiple search strategies (exact, partial, fuzzy, category)
 * - Handles chunked documentation for large sections
 * - Provides type-safe interfaces for documentation structure
 *
 * @example
 * ```typescript
 * import { loadSections, getSection, searchSections } from './docs-loader.ts';
 *
 * const sections = loadSections();
 * const debug = getSection(sections, 'debug');
 * const matches = searchSections(sections, 'serialization');
 * ```
 */
/**
 * Represents a documentation section with metadata and optional content.
 *
 * Sections can be standalone or part of a chunked hierarchy for large documents.
 * Chunked sections have a parent entry with `is_chunked: true` and child entries
 * with `parent_id` pointing to the parent.
 *
 * @property id - Unique identifier for the section (e.g., "debug", "serde-validators")
 * @property title - Human-readable title displayed to users
 * @property category - Category slug for grouping (e.g., "macros", "guides")
 * @property category_title - Human-readable category name
 * @property path - Relative path to the markdown content file from docs directory
 * @property use_cases - Comma-separated keywords describing when this doc is useful
 * @property content - The actual markdown content (loaded eagerly by loadSections, undefined for chunked parents)
 * @property is_chunked - True if this section is split into multiple sub-chunks
 * @property parent_id - For sub-chunks, the ID of the parent section
 * @property chunk_ids - For chunked parents, ordered list of child chunk IDs
 */
export interface Section {
    id: string;
    title: string;
    category: string;
    category_title: string;
    path: string;
    use_cases: string;
    content?: string;
    is_chunked?: boolean;
    parent_id?: string;
    chunk_ids?: string[];
}
/**
 * Loads all documentation sections from the docs directory.
 *
 * This function reads `docs/sections.json` for metadata and loads the markdown
 * content for each section from disk. Chunked parent sections do not have their
 * content loaded directly - their content is accessed through child chunks.
 *
 * @returns Array of Section objects with content loaded. Returns empty array if
 *          sections.json is not found (with a warning logged to stderr).
 * @throws When sections.json lists a markdown file that does not exist.
 *
 * @example
 * ```typescript
 * const sections = loadSections();
 * console.log(`Loaded ${sections.length} sections`);
 * ```
 */
export declare function loadSections(): Section[];
/**
 * Finds a section by ID or title using progressive matching strategies.
 *
 * The function attempts to match in the following order (stopping at first match):
 * 1. Exact ID match (case-insensitive)
 * 2. Exact title match (case-insensitive)
 * 3. Partial ID match (query is substring of ID)
 * 4. Partial title match (query is substring of title)
 *
 * @param sections - Array of sections to search through
 * @param query - Search query (ID or title to find)
 * @returns The first matching Section, or undefined if no match found
 *
 * @example
 * ```typescript
 * const debug = getSection(sections, 'debug');        // Exact ID match
 * const serde = getSection(sections, 'Serialize');    // Exact title match
 * const partial = getSection(sections, 'valid');      // Partial match on "validators"
 * ```
 */
export declare function getSection(sections: Section[], query: string): Section | undefined;
/**
 * Retrieves multiple sections by their IDs or titles.
 *
 * Uses {@link getSection} for each query, deduplicating results if the same
 * section matches multiple queries.
 *
 * @param sections - Array of sections to search through
 * @param queries - Array of search queries (IDs or titles)
 * @returns Array of unique matching Sections in the order they were found
 *
 * @example
 * ```typescript
 * const docs = getSections(sections, ['debug', 'serialize', 'clone']);
 * // Returns all three sections if found
 * ```
 */
export declare function getSections(sections: Section[], queries: string[]): Section[];
/**
 * Performs a fuzzy search across sections using a weighted scoring algorithm.
 *
 * The search splits the query into keywords and scores each section based on
 * where matches are found. Results are sorted by relevance score (highest first).
 *
 * ## Scoring Algorithm
 *
 * Each section is scored based on matches in different fields:
 * - **ID match** (+10): Full query found in section ID
 * - **Title match** (+10): Full query found in section title
 * - **Use cases match** (+5 per keyword): Each query keyword found in use_cases
 * - **Content match** (+1 per keyword): Each query keyword found in content
 *
 * The higher weights for ID/title ensure exact matches rank above content matches.
 * Use cases are weighted moderately as they indicate intended use.
 *
 * @param sections - Array of sections to search through
 * @param query - Search query (can contain multiple space-separated keywords)
 * @returns Array of matching Sections sorted by relevance score (highest first)
 *
 * @example
 * ```typescript
 * // Single keyword search
 * const results = searchSections(sections, 'validation');
 *
 * // Multi-keyword search (scores sections matching more keywords higher)
 * const results = searchSections(sections, 'email url length');
 * ```
 */
export declare function searchSections(sections: Section[], query: string): Section[];
/**
 * Filters sections by category slug or category title.
 *
 * Matches against both `category` (slug) and `category_title` (display name)
 * to support flexible lookups.
 *
 * @param sections - Array of sections to filter
 * @param category - Category slug or title to filter by (case-insensitive)
 * @returns Array of Sections belonging to the specified category
 *
 * @example
 * ```typescript
 * // Filter by category slug
 * const macros = getSectionsByCategory(sections, 'macros');
 *
 * // Filter by category title
 * const guides = getSectionsByCategory(sections, 'Getting Started');
 * ```
 */
export declare function getSectionsByCategory(sections: Section[], category: string): Section[];