/**
 * Regex caching utility for performance optimization.
 * Caches compiled RegExp objects to avoid recompilation on every function call.
 */
/**
 * Gets a cached RegExp or creates and caches a new one.
 * Use this for dynamic patterns that depend on user input (e.g., separators).
 *
 * @param pattern - The regex pattern string
 * @param flags - Optional regex flags (default: 'g')
 * @returns A cached RegExp object
 */
export declare function getCachedRegex(pattern: string, flags?: string): RegExp;