/**
 * SQL Escaping Utilities
 *
 * Provides safe SQL escaping functions for LanceDB query construction.
 * These functions help prevent SQL injection attacks by properly escaping
 * special characters in string values used in SQL queries.
 *
 * @module utils/sql
 */
/**
 * Escape a string value for use in SQL queries
 *
 * This function escapes:
 * - Backslashes: \ -> \\
 * - Single quotes: ' -> ''
 * - Null bytes: removed entirely
 * - Control characters (0x00-0x1f): removed entirely
 * - Semicolons: removed (BUG #15 FIX - defense in depth)
 * - SQL comment sequences: removed (BUG #15 FIX - defense in depth)
 *
 * @param value - The string value to escape
 * @returns The escaped string safe for SQL queries
 *
 * @example
 * ```typescript
 * const path = "test' OR '1'='1";
 * const escaped = escapeSqlString(path);
 * // Result: "test'' OR ''1''=''1"
 * const query = `path = '${escaped}'`;
 * ```
 */
export declare function escapeSqlString(value: string): string;
/**
 * Escape a string for use in SQL LIKE patterns
 *
 * This function:
 * 1. First applies all escapeSqlString transformations
 * 2. Then escapes SQL LIKE wildcards:
 *    - % -> \%
 *    - _ -> \_
 *    - [ -> \[ (for bracket expressions in some SQL dialects)
 *
 * @param value - The string value to escape for LIKE patterns
 * @returns The escaped string safe for SQL LIKE patterns
 *
 * @example
 * ```typescript
 * const pattern = "100%_complete.ts";
 * const escaped = escapeLikePattern(pattern);
 * // Result: "100\\%\\_complete.ts"
 * const query = `path LIKE '${escaped}'`;
 * ```
 */
export declare function escapeLikePattern(value: string): string;
/**
 * Convert a glob pattern to a SQL LIKE pattern with proper escaping
 *
 * This function safely converts glob wildcards to SQL LIKE wildcards:
 * - ** -> % (matches any sequence including path separators)
 * - * -> % (matches any sequence)
 * - ? -> _ (matches single character)
 *
 * All other special characters are properly escaped to prevent injection.
 *
 * @param globPattern - The glob pattern to convert
 * @returns A properly escaped SQL LIKE pattern
 *
 * @example
 * ```typescript
 * const pattern = globToSafeLikePattern("src/*.ts");
 * // Result: "src/%.ts"  (* becomes %)
 *
 * const pattern2 = globToSafeLikePattern("test' OR '1'='1");
 * // Result: "test'' OR ''1''=''1" (injection attempt escaped)
 * ```
 */
export declare function globToSafeLikePattern(globPattern: string): string;
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