Function getDirectoryNames

src/hooks/fileSuggestions.ts:393–397

(files: string[])

 * @returns An array of unique directory names with a trailing separator
 */
export function getDirectoryNames(files: string[]): string[] {
  const directoryNames = new Set<string>()
  collectDirectoryNames(files, 0, files.length, directoryNames)
  return [...directoryNames].map(d => d + path.sep)
}

/**
 * Async variant: yields every ~10k files so 270k+ file lists don't block