/**
 * Pattern type classification for targets and excludes.
 */
export type PatternType = 'literal' | 'glob' | 'regex';
/**
 * Detect the type of a pattern string.
 *
 * Rules:
 * - Regex: Starts and ends with `/`, and the content between doesn't contain unescaped `/`
 *   Example: `/\.conf$/`, `/test/` (simple)
 * - Glob: Contains glob metacharacters: `*`, `?`, `{`
 *   Example: `*.conf`, `~/.config/{a,b}`
 * - Literal: Everything else
 *   Example: `~/.zshrc`, `/usr/local/bin`
 *
 * Special handling for absolute paths vs regex:
 * - `/usr/local/bin` is literal (multiple `/` inside, not at boundaries)
 * - `/test/` is regex (starts and ends with `/`, single segment inside)
 * - `/\.conf$/` is regex (starts and ends with `/`, no unescaped `/` inside)
 */
export declare function detectPatternType(pattern: string): PatternType;
/**
 * Parse a regex pattern string (e.g., `/\.conf$/`) into a RegExp object.
 *
 * @throws {Error} If the pattern is invalid regex syntax
 */
export declare function parseRegexPattern(pattern: string): RegExp;
/**
 * Create an optimized exclude matcher function.
 *
 * This function pre-compiles all patterns for efficient repeated matching.
 * It handles three pattern types: glob, regex, and literal.
 *
 * @param excludePatterns - Array of exclude pattern strings
 * @returns A function that tests if a file path should be excluded
 */
export declare function createExcludeMatcher(excludePatterns: string[]): (filePath: string) => boolean;
/**
 * Validate that a pattern string is well-formed.
 *
 * Used for schema validation at config load time.
 *
 * @param pattern - Pattern string to validate
 * @returns true if valid, false otherwise
 */
export declare function isValidPattern(pattern: string): boolean;