/**
 * Pattern-based query parser
 * @module core/query/parser
 */
import type { ParsedQuery } from './types.js';
/**
 * Parse a query string for advanced syntax patterns
 *
 * Extracts:
 * - Date ranges (1920-1930, 1920s, 19th century, named eras)
 * - Field:value pairs (creator:Lawson, subject:"gold rush")
 * - Quoted phrases ("Melbourne railway")
 * - Exclusions (-advertisement)
 * - Wildcards (colonial*)
 *
 * @param query - The search query string
 * @returns Parsed query with extracted components
 *
 * @example
 * ```typescript
 * const parsed = parseQuery('Melbourne railway 1920-1930 creator:Lawson -advertisement');
 * // {
 * //   original: 'Melbourne railway 1920-1930 creator:Lawson -advertisement',
 * //   cleanedQuery: 'Melbourne railway',
 * //   dateRange: { from: '1920', to: '1930' },
 * //   fields: { creator: 'Lawson' },
 * //   phrases: [],
 * //   exclusions: ['advertisement'],
 * //   hasWildcard: false
 * // }
 * ```
 */
export declare function parseQuery(query: string): ParsedQuery;
/**
 * Check if a query is simple (no advanced syntax)
 *
 * @param query - The search query string
 * @returns true if query has no advanced syntax
 */
export declare function isSimpleQuery(query: string): boolean;
/**
 * Validate field names against known fields
 *
 * @param fields - Parsed field:value pairs
 * @returns Array of unknown field names
 */
export declare function getUnknownFields(fields: Record<string, string>): string[];
/**
 * Format a parsed query for display/debugging
 *
 * @param parsed - Parsed query result
 * @returns Human-readable summary
 */
export declare function formatParsedQuery(parsed: ParsedQuery): string;
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