Function getCachedFileContent

src/file-cache.ts:26–65

(filePath: string)

 * @returns File content or null if file doesn't exist
 */
export function getCachedFileContent(filePath: string): string | null {
  try {
    // Normalize the path for cross-platform compatibility
    const normalizedPath = path.resolve(filePath);

    // Check if file exists
    if (!existsSync(normalizedPath)) {
      return null;
    }

    // Check cache first
    const now = Date.now();
    const cached = globalFileCache.get(normalizedPath);

    if (cached) {
      // Check if cache is still valid (TTL and file modification time)
      const stats = statSync(normalizedPath);
      const fileModTime = stats.mtime.getTime();

      if (now - cached.timestamp < CACHE_TTL && cached.mtime === fileModTime) {
        return cached.content;
      }
    }

    // Read file and update cache
    const content = readFileSync(normalizedPath, 'utf-8');
    const stats = statSync(normalizedPath);

    globalFileCache.set(normalizedPath, {
      content,
      mtime: stats.mtime.getTime(),
      timestamp: now
    });

    return content;

  } catch (error) {
    return null;
  }
}

/**
 * Check if a file exists (with caching for stat calls)