/**
 * Replace special characters in file paths with Unicode equivalents
 * Results are memoized to reduce overhead
 */
export declare function replaceSpecialChars(str: string): string;
/**
 * Clear the path sanitization cache (primarily for testing)
 */
export declare function clearPathSanitizationCache(): void;
/**
 * Test helper to check if a string is in the cache
 * This is only used in tests to verify cache behavior for coverage
 * @param str The string to check
 * @returns true if the string is cached, false otherwise
 */
export declare function isCached(str: string): boolean;
/**
 * Test helper to get cache size
 * This is only used in tests to verify cache behavior for coverage
 * @returns The number of entries in the cache
 */
export declare function getCacheSize(): number;
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