/**
 * Core search engine implementation
 */
import type { SearchOptions, SearchResponse } from './types.js';
/**
 * Spec data structure for search
 */
export interface SearchableSpec {
    path: string;
    name: string;
    status: string;
    priority?: string;
    tags?: string[];
    title?: string;
    description?: string;
    content?: string;
    /** Created date (ISO string) */
    created?: string;
    /** Updated date (ISO string) */
    updated?: string;
    /** Assignee */
    assignee?: string;
}
/**
 * Check if spec contains all query terms across any combination of fields
 *
 * This enables cross-field matching: term A can be in title, term B in content
 *
 * @param spec - Spec to check
 * @param queryTerms - Terms that must all be present
 * @returns True if all terms are found somewhere in the spec, false for empty queryTerms
 */
export declare function specContainsAllTerms(spec: SearchableSpec, queryTerms: string[]): boolean;
/**
 * Search specs with intelligent relevance ranking
 *
 * @param query - Search query string
 * @param specs - Specs to search
 * @param options - Search options
 * @returns Search results with relevance scoring
 */
export declare function searchSpecs(query: string, specs: SearchableSpec[], options?: SearchOptions): SearchResponse;
/**
 * Advanced search with query syntax support
 *
 * @param query - Search query string with optional advanced syntax
 * @param specs - Specs to search
 * @param options - Search options
 * @returns Search results with relevance scoring
 */
export declare function advancedSearchSpecs(query: string, specs: SearchableSpec[], options?: SearchOptions): SearchResponse;
/**
 * Search specs with intelligent relevance ranking, with support for advanced query syntax
 *
 * Automatically detects advanced syntax (AND, OR, NOT, field:value, etc.) and uses
 * the appropriate search method.
 *
 * @param query - Search query string (supports advanced syntax)
 * @param specs - Specs to search
 * @param options - Search options
 * @returns Search results with relevance scoring
 */
export declare function searchSpecsAdvanced(query: string, specs: SearchableSpec[], options?: SearchOptions): SearchResponse;
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