Function collectDirectoryNames

src/hooks/fileSuggestions.ts:420–440

(
  files: string[],
  start: number,
  end: number,
  out: Set<string>,
)

}

function collectDirectoryNames(
  files: string[],
  start: number,
  end: number,
  out: Set<string>,
): void {
  for (let i = start; i < end; i++) {
    let currentDir = path.dirname(files[i]!)
    // Early exit if we've already processed this directory and all its parents.
    // Root detection: path.dirname returns its input at the root (fixed point),
    // so we stop when dirname stops changing. Checking this before add() keeps
    // the root out of the result set (matching the old path.parse().root guard).
    // This avoids path.parse() which allocates a 5-field object per file.
    while (currentDir !== '.' && !out.has(currentDir)) {
      const parent = path.dirname(currentDir)
      if (parent === currentDir) break
      out.add(currentDir)
      currentDir = parent
    }
  }
}

/**
 * Gets additional files from Claude config directories