Function fileExists

libCacheSim-node/binding.cc:11–14

Helper function to check if file exists

// Helper function to check if file exists
bool fileExists(const std::string& filename) {
  struct stat buffer;
  return (stat(filename.c_str(), &buffer) == 0);
}

// Helper function to parse cache size string (e.g., "1mb", "1gb", "1024")
uint64_t parseCacheSize(const std::string& sizeStr) {