Function mergeFileStateCaches

src/utils/fileStateCache.ts:140–153

(
  first: FileStateCache,
  second: FileStateCache,
)

// Merge two file state caches, with more recent entries (by timestamp) overriding older ones
export function mergeFileStateCaches(
  first: FileStateCache,
  second: FileStateCache,
): FileStateCache {
  const merged = cloneFileStateCache(first)
  for (const [filePath, fileState] of second.entries()) {
    const existing = merged.get(filePath)
    // Only override if the new entry is more recent
    if (!existing || fileState.timestamp > existing.timestamp) {
      merged.set(filePath, fileState)
    }
  }
  return merged
}